{"id":14540,"date":"2015-04-06T09:49:31","date_gmt":"2015-04-06T02:49:31","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14540"},"modified":"2015-04-02T09:56:01","modified_gmt":"2015-04-02T02:56:01","slug":"bao-cao-ket-qua-de-tai-nghien-cuu-mot-so-yeu-to-cong-nghe-de-san-xuat-san-pham-mat-ghe-cong-hai-chieu-tu-cot-dan-va-van-boc-go-tram-hong-bang-phuong-phap-ep-dinh-hinh-gia-nhiet-dien-cao-tan","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-de-tai-nghien-cuu-mot-so-yeu-to-cong-nghe-de-san-xuat-san-pham-mat-ghe-cong-hai-chieu-tu-cot-dan-va-van-boc-go-tram-hong-bang-phuong-phap-ep-dinh-hinh-gia-nhiet-dien-cao-tan\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f4ng ngh\u1ec7 \u0111\u1ec3 s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c g\u1ed7 tr\u00e1m h\u1ed3ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u00e9p \u0111inh h\u00ecnh gia nhi\u1ec7t \u0111i\u1ec7n cao t\u1ea7n"},"content":{"rendered":"
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Nguy\u1ec5n Th\u1ecb Ph\u00fac<\/em><\/p>\n

T\u00d3M T\u1eaeT<\/b><\/p>\n

C\u00f9ng v\u1edbi th\u1eddi gian, s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a x\u00e3 h\u1ed9i c\u0169ng nh\u01b0 vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng, b\u1ea3o v\u1ec7 r\u1eebng t\u1ef1 nhi\u00ean \u0111ang ng\u00e0y c\u00e0ng c\u1ea1n ki\u1ec7t, hi\u1ec7n nay ng\u00e0nh ch\u1ebf bi\u1ebfn g\u1ed7 \u0111\u00e3 c\u00f3 nh\u1eefng b\u01b0\u1edbc thay \u0111\u1ed5i l\u1edbn v\u1ec1 nguy\u00ean li\u1ec7u. \u0110\u00f3 l\u00e0 s\u1ef1 c\u00f3 m\u1eb7t ph\u1ed5 bi\u1ebfn c\u1ee7a c\u00e1c lo\u1ea1i v\u00e1n nh\u00e2n t\u1ea1o (v\u00e1n d\u00e1n, v\u00e1n d\u0103m, v\u00e1n MDF, v\u00e1n verneer, v\u00e1n LVL\u2026.). Do nguy\u00ean li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00f4ng gi\u1ed1ng nhau, k\u1ebft c\u1ea5u s\u1ea3n ph\u1ea9m c\u0169ng theo \u0111\u00f3 m\u00e0 bi\u1ebfn \u0111\u1ed5i. M\u1ee9c \u0111\u1ed9 c\u01a1 gi\u1edbi h\u00f3a v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a l\u00e0 c\u01a1 s\u1edf c\u1ee7a s\u1ef1 h\u00ecnh th\u00e0nh c\u00e1c lo\u1ea1i s\u1ea3n ph\u1ea9m m\u1edbi, \u0111\u1ed3ng th\u1eddi c\u00e1c lo\u1ea1i s\u1ea3n ph\u1ea9m m\u1edbi n\u00e0y c\u0169ng nh\u1eb1m \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a x\u00e3 h\u1ed9i trong vi\u1ec7c ph\u00e1t huy t\u1ed1i \u0111a c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 \u0111\u1ed9 ch\u00ednh x\u00e1c, hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t cao, t\u1eadn d\u1ee5ng t\u1ed1i \u0111a v\u1ec1 nguy\u00ean li\u1ec7u, c\u1ea3i ti\u1ebfn v\u00e0 \u0111a d\u1ea1ng h\u00f3a m\u1eabu m\u00e3 s\u1ea3n ph\u1ea9m\u2026.. C\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u nh\u1eb1m g\u00f3p ph\u1ea7n \u0111a d\u1ea1ng h\u00f3a s\u1ea3n ph\u1ea9m m\u1ed9c v\u00e0 s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 g\u1ed7 r\u1eebng tr\u1ed3ng v\u00e0 l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7.<\/p>\n

\u0110\u1eb6T V\u1ea4N \u0110\u1ec0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, ng\u00e0nh ch\u1ebf bi\u1ebfn g\u1ed7 c\u1ee7a Vi\u1ec7t Nam kh\u00f4ng ng\u1eebng ph\u00e1t tri\u1ec3n c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng, ch\u1ea5t l\u01b0\u1ee3ng, \u0111a d\u1ea1ng h\u00f3a m\u1eabu m\u00e3 s\u1ea3n ph\u1ea9m. Xu\u1ea5t kh\u1ea9u \u0111\u1ed3 m\u1ed9c \u0111ang l\u00e0 m\u1ee5c ti\u00eau chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a ng\u00e0nh v\u00e0 c\u1ee7a nh\u00e0 n\u01b0\u1edbc ta, m\u1ed7i n\u0103m\u00a0 t\u0103ng tr\u01b0\u1edfng g\u1ea7n 30%: N\u0103m 2005 \u0111\u00e3 \u0111\u1ea1t kho\u1ea3ng 1,5 t\u1ef7 USD, \u0111\u00f3 l\u00e0 m\u1ed9t con s\u1ed1 \u0111\u00e1ng k\u1ec3 \u0111\u00f3ng g\u00f3p cho t\u0103ng tr\u01b0\u1edfng kinh t\u1ebf c\u1ee7a \u0111\u1ea5t n\u01b0\u1edbc. D\u1ef1 ki\u1ebfn t\u1edbi n\u0103m 2020, ch\u1ec9 ti\u00eau xu\u1ea5t kh\u1ea9u \u0111\u1ed3 m\u1ed9c c\u1ee7a Vi\u1ec7t Nam l\u00e0 8 t\u1ef7 USD. Tuy nhi\u00ean, nguy\u00ean li\u1ec7u cho s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c xu\u1ea5t kh\u1ea9u l\u00e0 g\u1ed7 tr\u00f2n v\u00e0 v\u00e1n nh\u00e2n t\u1ea1o \u0111ang ph\u1ea3i nh\u1eadp t\u1eeb n\u01b0\u1edbc ngo\u00e0i, chi\u1ebfm kho\u1ea3ng 80%. \u0110\u1ebfn nay, g\u1ed7 r\u1eebng tr\u1ed3ng \u0111\u1ebfn tu\u1ed5i khai th\u00e1c \u0111\u00e3 t\u0103ng \u0111\u00e1ng k\u1ec3, song v\u00ec g\u1ed7 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf n\u00ean ch\u01b0a \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u cho s\u1ea3n xu\u1ea5t b\u00e0n gh\u1ebf ngo\u00e0i tr\u1eddi, v\u00e0 c\u00e1c lo\u1ea1i \u0111\u1ed3 m\u1ed9c xu\u1ea5t kh\u1ea9u kh\u00e1c. Cho n\u00ean t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 ngu\u1ed3n nguy\u00ean li\u1ec7u trong n\u01b0\u1edbc ph\u1ee5c v\u1ee5 xu\u1ea5t kh\u1ea9u l\u00e0 th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft. C\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi \u0111ang c\u00f3 xu th\u1ebf s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn lo\u1ea1i b\u00e0n gh\u1ebf v\u0103n ph\u00f2ng, ph\u00f2ng h\u1ecdp, h\u1ed9i tr\u01b0\u1eddng b\u1eb1ng g\u1ed7 thay cho \u0111\u1ed3 nh\u1ef1a, kim lo\u1ea1i c\u1ee7a nh\u1eefng th\u1eadp ni\u00ean tr\u01b0\u1edbc. Nh\u01b0 v\u1eady nhu c\u1ea7u th\u1ecb tr\u01b0\u1eddng cho c\u00e1c lo\u1ea1i s\u1ea3n ph\u1ea9m\u00a0 b\u00e0n gh\u1ebf c\u00f3 chi ti\u1ebft cong (m\u1eb7t ng\u1ed3i, m\u1eb7t t\u1ef1a, tay v\u1ecbn,\u2026) l\u00e0 r\u1ea5t l\u1edbn. C\u00e1c lo\u1ea1i chi ti\u1ebft n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra ch\u1ee7 y\u1ebfu t\u1eeb c\u00f4ng ngh\u1ec7 u\u1ed1n- \u00e9p \u0111\u1ecbnh h\u00ecnh v\u00e1n b\u00f3c\/l\u1ea1ng, m\u1ed9t \u00edt t\u1eeb g\u1ed7 nguy\u00ean. V\u00ec v\u1eady, \u0111\u1ec1 t\u00e0i “Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f4ng ngh\u1ec7 \u0111\u1ec3 s\u1ea3n xu\u1ea5t m\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m t\u1eeb tre n\u1ee9a \u0111an v\u00e0 v\u00e1n b\u00f3c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u00e9p \u0111\u1ecbnh h\u00ecnh gia nhi\u1ec7t \u0111i\u1ec7n cao t\u1ea7n “<\/b> \u0111\u01b0\u1ee3c <\/b>\u00a0nghi\u00ean c\u1ee9u nh\u1eb1m \u1ee9ng d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p c\u00f4ng ngh\u1ec7 gia nhi\u1ec7t b\u1eb1ng d\u00f2ng \u0111i\u1ec7n cao t\u1ea7n v\u00e0o c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn g\u1ed7, g\u00f3p ph\u1ea7n t\u1ea1o ra s\u1ea3n ph\u1ea9m m\u1edbi t\u1eeb nguy\u00ean li\u1ec7u g\u1ed7 r\u1eebng tr\u1ed3ng v\u00e0 tre n\u1ee9a \u1edf Vi\u1ec7t Nam.<\/p>\n

V\u1eacT LI\u1ec6U – N\u1ed8I DUNG V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/b><\/p>\n

V\u1eadt li\u1ec7u:<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00f3t \u0111an k\u00edch th\u01b0\u1edbc: 0,8 x 600 x 1050 mm<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 V\u00e1n b\u00f3c g\u1ed7 tr\u00e1m h\u1ed3ng k\u00edch th\u01b0\u1edbc: 1,5 x 600 x 1050 mm<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Keo d\u00e1n: S\u1eed d\u1ee5ng keo U-F chuy\u00ean d\u00f9ng \u0111\u1ed1i v\u1edbi g\u1ed7 tr\u00ean m\u00e1y cao t\u1ea7n (d\u1ea1ng b\u00ean ngo\u00e0i: Tr\u1eafng ng\u00e0, c\u00f3 m\u00f9i \u0111\u1eb7c tr\u01b0ng; \u0111\u1ed9 nh\u1edbt \u1edf 30o<\/sup>C: 110 \u2013 150 cps; h\u00e0m l\u01b0\u1ee3ng r\u1eafn: 53- 55%; pH: 7,5-8,5; t\u1ef7 tr\u1ecdng \u1edf 30 o<\/sup>C: 1,18 \u2013 1,2<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Thi\u1ebft b\u1ecb:S\u1eed d\u1ee5ng m\u00e1y u\u1ed1n \u00e9p g\u1ed7 KUOMING 47471 c\u1ee7a \u0110\u00e0i Loan, t\u1ea7n s\u1ed1 2450 MHz<\/b><\/p>\n

N\u1ed9i dung: <\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 ch\u1ee7 y\u1ebfu \u0111\u1ec3 s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c: \u00c1p su\u1ea5t \u00e9p (MPa); C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n (A); Th\u1eddi gian \u00e9p (s)<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m: \u0111\u1ed9 \u1ea9m (%); Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch (g\/cm3<\/sup>); \u0110\u1ed9 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y (%); \u0110\u1ed9 h\u00fat n\u01b0\u1edbc (%); \u0110\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh (MPa); \u0110\u1ed9 b\u1ec1n k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo (MPa)<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u:<\/b><\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd s\u1ed1 li\u1ec7u: S\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m Microsft Excel 97 \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c s\u1ed1 li\u1ec7u thu \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m. S\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd lo\u1ea1i b\u1ecf sai s\u1ed1 th\u00f4 theo ti\u00eau chu\u1ea9n Studen<\/p>\n

Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng: L\u00e0 h\u1ec7 th\u1ed1ng TCVN:<\/i> TCVN 7756- 4: 2007; TCVN 7756- 3: 2007; <\/i><\/b>TCVN 7756- 4: 2007; TCVN 7756- 4: 2007; TCVN 7756- 9: 2007;<\/i><\/b> TCVN 7756- 6: 2007<\/b><\/p>\n

\u00a0<\/b><\/p>\n

K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U <\/b><\/p>\n

* Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a s\u1ea3n ph\u1ea9m<\/b><\/p>\n

– M\u1eb7t gh\u1ebf cong hai chi\u1ec1u c\u00f3 d\u1ea1ng \u0111\u1ecbnh h\u00ecnh theo khu\u00f4n c\u00f3 \u0111\u1ed9 cong Rmax= 80mm<\/p>\n

– Chi\u1ec1u d\u00e0y s\u1ea3n ph\u1ea9m: 10 mm<\/p>\n

* Kho\u1ea3ng bi\u1ebfn thi\u00ean c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 \u00e9p s\u1ea3n ph\u1ea9m<\/p>\n

B\u1ea3ng 1: Kho\u1ea3ng bi\u1ebfn thi\u00ean c\u1ee7a c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn<\/p>\n\n\n\n\n\n\n
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T\u00ean th\u00f4ng s\u1ed1<\/b><\/p>\n<\/td>\n

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C\u00f3t \u0111an<\/h3>\n<\/td>\n

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V\u00e1n b\u00f3c<\/h3>\n<\/td>\n<\/tr>\n

\u00c1p l\u1ef1c \u00e9p P (MPa)<\/td>\n\n

1,6\/1,8\/2,0<\/p>\n<\/td>\n

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1,6\/1,8\/2,0<\/p>\n<\/td>\n<\/tr>\n

C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n I (A)<\/td>\n\n

1\/1,5\/2,0<\/p>\n<\/td>\n

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1\/1,5\/2,0<\/p>\n<\/td>\n<\/tr>\n

Th\u1eddi gian \u00e9p t (gi\u00e2y)<\/td>\n\n

300\/360\/420<\/p>\n<\/td>\n

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300\/360\/420<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n<\/div>\n

 <\/p>\n

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B\u1ea3ng 2: K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 \u00e9p m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb c\u00f3t \u0111an<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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TT<\/b><\/p>\n<\/td>\n

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Ch\u1ec9 ti\u00eau th\u1eed<\/b><\/p>\n<\/td>\n

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Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/b><\/p>\n<\/td>\n

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\u00c1p l\u1ef1c \u00e9p<\/b><\/p>\n<\/td>\n

\n

K\u1ebft qu\u1ea3<\/b><\/p>\n<\/td>\n<\/tr>\n

I=1 t=300<\/td>\nI=1 t=360<\/td>\nI=1 t=420<\/td>\nI=1,5 t=300<\/td>\nI=1,5t=360<\/td>\nI=1,5 t=420<\/td>\nI=2t=300<\/td>\nI=2t=360<\/td>\nI=2t=420<\/td>\n<\/tr>\n
\n

1<\/p>\n<\/td>\n

\u0110\u1ed9 \u1ea9m, (%)<\/td>\n\n

TCVN 7756 – 3 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

13,31<\/p>\n<\/td>\n

\n

12,02<\/p>\n<\/td>\n

\n

14,01<\/p>\n<\/td>\n

\n

17,81<\/p>\n<\/td>\n

\n

18,05<\/p>\n<\/td>\n

\n

17,34<\/p>\n<\/td>\n

\n

16,22<\/p>\n<\/td>\n

\n

16,11<\/p>\n<\/td>\n

\n

15,73<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

11,97<\/p>\n<\/td>\n

\n

12,42<\/p>\n<\/td>\n

\n

13,01<\/p>\n<\/td>\n

\n

18,39<\/p>\n<\/td>\n

\n

17,88<\/p>\n<\/td>\n

\n

18,71<\/p>\n<\/td>\n

\n

16,63<\/p>\n<\/td>\n

\n

16,08<\/p>\n<\/td>\n

\n

15,46<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

11,60<\/p>\n<\/td>\n

\n

12,71<\/p>\n<\/td>\n

\n

12,83<\/p>\n<\/td>\n

\n

17,64<\/p>\n<\/td>\n

\n

18,06<\/p>\n<\/td>\n

\n

18,11<\/p>\n<\/td>\n

\n

14,65<\/p>\n<\/td>\n

\n

16,07<\/p>\n<\/td>\n

\n

15,03<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch, (g\/cm3<\/sup>). <\/td>\n\n

TCVN 7756 – 4 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,82<\/p>\n<\/td>\n

\n

0,82<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,82<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,80<\/p>\n<\/td>\n

\n

0,81<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\u0110\u1ed9 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y sau khi ng\u00e2m trong n\u01b0\u1edbc, (%)<\/td>\n\n

TCVN 7756 – 5 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

17,34<\/p>\n<\/td>\n

\n

17,26<\/p>\n<\/td>\n

\n

16,98<\/p>\n<\/td>\n

\n

16,90<\/p>\n<\/td>\n

\n

16,74<\/p>\n<\/td>\n

\n

16,44<\/p>\n<\/td>\n

\n

17,02<\/p>\n<\/td>\n

\n

16,88<\/p>\n<\/td>\n

\n

16,66<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

17,23<\/p>\n<\/td>\n

\n

16,92<\/p>\n<\/td>\n

\n

16,12<\/p>\n<\/td>\n

\n

15,88<\/p>\n<\/td>\n

\n

14,87<\/p>\n<\/td>\n

\n

14,04<\/p>\n<\/td>\n

\n

16,55<\/p>\n<\/td>\n

\n

16,00<\/p>\n<\/td>\n

\n

14,16<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

17,00<\/p>\n<\/td>\n

\n

16,64<\/p>\n<\/td>\n

\n

16,05<\/p>\n<\/td>\n

\n

15,79<\/p>\n<\/td>\n

\n

14,95<\/p>\n<\/td>\n

\n

14,00<\/p>\n<\/td>\n

\n

16,15<\/p>\n<\/td>\n

\n

15,98<\/p>\n<\/td>\n

\n

14,34<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\u0110\u1ed9 h\u00fat n\u01b0\u1edbc, (%) <\/td>\n\n

TCVN 7756 – 5 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

50,84<\/p>\n<\/td>\n

\n

50,04<\/p>\n<\/td>\n

\n

49,20<\/p>\n<\/td>\n

\n

46,04<\/p>\n<\/td>\n

\n

46,00<\/p>\n<\/td>\n

\n

45,75<\/p>\n<\/td>\n

\n

48,23<\/p>\n<\/td>\n

\n

47,86<\/p>\n<\/td>\n

\n

47,16<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

49,63<\/p>\n<\/td>\n

\n

47,90<\/p>\n<\/td>\n

\n

47,00<\/p>\n<\/td>\n

\n

46,17<\/p>\n<\/td>\n

\n

45,30<\/p>\n<\/td>\n

\n

44,74<\/p>\n<\/td>\n

\n

48,51<\/p>\n<\/td>\n

\n

47,35<\/p>\n<\/td>\n

\n

46,41<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

49,10<\/p>\n<\/td>\n

\n

48,04<\/p>\n<\/td>\n

\n

47,75<\/p>\n<\/td>\n

\n

47,07<\/p>\n<\/td>\n

\n

46,32<\/p>\n<\/td>\n

\n

45,97<\/p>\n<\/td>\n

\n

48,00<\/p>\n<\/td>\n

\n

46,97<\/p>\n<\/td>\n

\n

46.68<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\u0110\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh, (MPa). <\/td>\n\n

TCVN 7756 – 6 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

37,63<\/p>\n<\/td>\n

\n

39,82<\/p>\n<\/td>\n

\n

39,66<\/p>\n<\/td>\n

\n

45,85<\/p>\n<\/td>\n

\n

47,29<\/p>\n<\/td>\n

\n

50,10<\/p>\n<\/td>\n

\n

39,02<\/p>\n<\/td>\n

\n

41,98<\/p>\n<\/td>\n

\n

47,95<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

39,83<\/p>\n<\/td>\n

\n

40,01<\/p>\n<\/td>\n

\n

41,69<\/p>\n<\/td>\n

\n

46,67<\/p>\n<\/td>\n

\n

53,82<\/p>\n<\/td>\n

\n

58,45<\/p>\n<\/td>\n

\n

45,10<\/p>\n<\/td>\n

\n

46,32<\/p>\n<\/td>\n

\n

48,16<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

39,20<\/p>\n<\/td>\n

\n

41,25<\/p>\n<\/td>\n

\n

42,25<\/p>\n<\/td>\n

\n

46,24<\/p>\n<\/td>\n

\n

53,32<\/p>\n<\/td>\n

\n

58,57<\/p>\n<\/td>\n

\n

45,27<\/p>\n<\/td>\n

\n

47,42<\/p>\n<\/td>\n

\n

47,79<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

Ch\u1ea5t l\u01b0\u1ee3ng d\u00e1n d\u00ednh (\u0110\u1ed9 b\u1ec1n k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo),<\/i> (MPa)<\/td>\n\n

TCVN 7756 – 9 : 2007<\/p>\n<\/td>\n

P=1,6<\/td>\n\n

1,24<\/p>\n<\/td>\n

\n

1,28<\/p>\n<\/td>\n

\n

1,42<\/p>\n<\/td>\n

\n

2,05<\/p>\n<\/td>\n

\n

2,29<\/p>\n<\/td>\n

\n

2,38<\/p>\n<\/td>\n

\n

1,50<\/p>\n<\/td>\n

\n

1,71<\/p>\n<\/td>\n

\n

1,83<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

1,44<\/p>\n<\/td>\n

\n

1,69<\/p>\n<\/td>\n

\n

1,81<\/p>\n<\/td>\n

\n

2,27<\/p>\n<\/td>\n

\n

2,49<\/p>\n<\/td>\n

\n

2,66<\/p>\n<\/td>\n

\n

1,75<\/p>\n<\/td>\n

\n

2,18<\/p>\n<\/td>\n

\n

2,32<\/p>\n<\/td>\n<\/tr>\n

P=2,0<\/td>\n\n

1,50<\/p>\n<\/td>\n

\n

1,68<\/p>\n<\/td>\n

\n

1,86<\/p>\n<\/td>\n

\n

2,28<\/p>\n<\/td>\n

\n

2,35<\/p>\n<\/td>\n

\n

2,67<\/p>\n<\/td>\n

\n

1,80<\/p>\n<\/td>\n

\n

2,20<\/p>\n<\/td>\n

\n

2,43<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

\u00a0<\/b><\/p>\n

\u00a0<\/b><\/p>\n

\u00a0<\/b><\/p>\n

B\u1ea3ng 3: K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 \u00e9p m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb v\u00e1n b\u00f3c<\/p>\n

\u00a0<\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

TT<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau th\u1eed<\/b><\/p>\n<\/td>\n

\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/b><\/p>\n<\/td>\n

\n

\u00c1p l\u1ef1c \u00e9p<\/b><\/p>\n<\/td>\n

\n

K\u1ebft qu\u1ea3<\/b><\/p>\n<\/td>\n<\/tr>\n

I=1 t=300<\/td>\nI=1 t=360<\/td>\nI=1 t=420<\/td>\nI=1,5 t=300<\/td>\nI=1,5t=360<\/td>\nI=1,5 t=420<\/td>\nI=2t=300<\/td>\nI=2t=360<\/td>\nI=2t=420<\/td>\n<\/tr>\n
\n

1<\/p>\n<\/td>\n

\u0110\u1ed9 \u1ea9m, (%)<\/td>\n\n

TCVN 7756 – 3 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

12,82<\/p>\n<\/td>\n

\n

12,04<\/p>\n<\/td>\n

\n

12,30<\/p>\n<\/td>\n

\n

17,04<\/p>\n<\/td>\n

\n

17,19<\/p>\n<\/td>\n

\n

17,78<\/p>\n<\/td>\n

\n

14,92<\/p>\n<\/td>\n

\n

12,03<\/p>\n<\/td>\n

\n

11,79<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

12,15<\/p>\n<\/td>\n

\n

12,20<\/p>\n<\/td>\n

\n

11,85<\/p>\n<\/td>\n

\n

16,08<\/p>\n<\/td>\n

\n

17,00<\/p>\n<\/td>\n

\n

17,50<\/p>\n<\/td>\n

\n

15,12<\/p>\n<\/td>\n

\n

12,32<\/p>\n<\/td>\n

\n

14,19<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

11,72<\/p>\n<\/td>\n

\n

12,23<\/p>\n<\/td>\n

\n

12,39<\/p>\n<\/td>\n

\n

17,09<\/p>\n<\/td>\n

\n

17,63<\/p>\n<\/td>\n

\n

17,29<\/p>\n<\/td>\n

\n

15,08<\/p>\n<\/td>\n

\n

13,12<\/p>\n<\/td>\n

\n

14,30<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch, (g\/cm3<\/sup>). <\/td>\n\n

TCVN 7756 – 4 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

0,60<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,61<\/p>\n<\/td>\n

\n

0,61<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,61<\/p>\n<\/td>\n

\n

0,60<\/p>\n<\/td>\n

\n

0,61<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

0,61<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,63<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,64<\/p>\n<\/td>\n

\n

0,63<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n

\n

0,62<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

0,63<\/p>\n<\/td>\n

\n

0,63<\/p>\n<\/td>\n

\n

0,63<\/p>\n<\/td>\n

\n

0,65<\/p>\n<\/td>\n

\n

0,65<\/p>\n<\/td>\n

\n

0,64<\/p>\n<\/td>\n

\n

0,63<\/p>\n<\/td>\n

\n

0,64<\/p>\n<\/td>\n

\n

0,64<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\u0110\u1ed9 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y sau khi ng\u00e2m trong n\u01b0\u1edbc, (%)<\/td>\n\n

TCVN 7756 – 5 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

11,94<\/p>\n<\/td>\n

\n

10,50<\/p>\n<\/td>\n

\n

9,43<\/p>\n<\/td>\n

\n

8,79<\/p>\n<\/td>\n

\n

7,97<\/p>\n<\/td>\n

\n

7,70<\/p>\n<\/td>\n

\n

11,11<\/p>\n<\/td>\n

\n

8,75<\/p>\n<\/td>\n

\n

7,99<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

9.06<\/p>\n<\/td>\n

\n

8.26<\/p>\n<\/td>\n

\n

7,27<\/p>\n<\/td>\n

\n

8,28<\/p>\n<\/td>\n

\n

7,68<\/p>\n<\/td>\n

\n

6,67<\/p>\n<\/td>\n

\n

8,74<\/p>\n<\/td>\n

\n

7,86<\/p>\n<\/td>\n

\n

6,97<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

9,54<\/p>\n<\/td>\n

\n

8,64<\/p>\n<\/td>\n

\n

7,16<\/p>\n<\/td>\n

\n

8,08<\/p>\n<\/td>\n

\n

7,77<\/p>\n<\/td>\n

\n

6,54<\/p>\n<\/td>\n

\n

9,00<\/p>\n<\/td>\n

\n

7,98<\/p>\n<\/td>\n

\n

6,80<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\u0110\u1ed9 h\u00fat n\u01b0\u1edbc, (%) <\/td>\n\n

TCVN 7756 – 5 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

46,89<\/p>\n<\/td>\n

\n

44,23<\/p>\n<\/td>\n

\n

42,12<\/p>\n<\/td>\n

\n

39,11<\/p>\n<\/td>\n

\n

38,43<\/p>\n<\/td>\n

\n

37,21<\/p>\n<\/td>\n

\n

40,82<\/p>\n<\/td>\n

\n

39,48<\/p>\n<\/td>\n

\n

38,05<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

39,07<\/p>\n<\/td>\n

\n

38,26<\/p>\n<\/td>\n

\n

37,22<\/p>\n<\/td>\n

\n

37,56<\/p>\n<\/td>\n

\n

37,31<\/p>\n<\/td>\n

\n

35,48<\/p>\n<\/td>\n

\n

38,28<\/p>\n<\/td>\n

\n

37,37<\/p>\n<\/td>\n

\n

36,60<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

40.96<\/p>\n<\/td>\n

\n

39.74<\/p>\n<\/td>\n

\n

37,64<\/p>\n<\/td>\n

\n

38,21<\/p>\n<\/td>\n

\n

37,03<\/p>\n<\/td>\n

\n

36,12<\/p>\n<\/td>\n

\n

39,95<\/p>\n<\/td>\n

\n

38,08<\/p>\n<\/td>\n

\n

37,01<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\u0110\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh, (MPa). <\/td>\n\n

TCVN 7756 – 6 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

48,02<\/p>\n<\/td>\n

\n

50,49<\/p>\n<\/td>\n

\n

53,61<\/p>\n<\/td>\n

\n

50,96<\/p>\n<\/td>\n

\n

52,49<\/p>\n<\/td>\n

\n

55,36<\/p>\n<\/td>\n

\n

50,58<\/p>\n<\/td>\n

\n

51,42<\/p>\n<\/td>\n

\n

55,00<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

59,31<\/p>\n<\/td>\n

\n

61,16<\/p>\n<\/td>\n

\n

64,18<\/p>\n<\/td>\n

\n

68,07<\/p>\n<\/td>\n

\n

70,08<\/p>\n<\/td>\n

\n

75,65<\/p>\n<\/td>\n

\n

61,26<\/p>\n<\/td>\n

\n

63,11<\/p>\n<\/td>\n

\n

66,08<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

61,92<\/p>\n<\/td>\n

\n

63,64<\/p>\n<\/td>\n

\n

66,31<\/p>\n<\/td>\n

\n

65,15<\/p>\n<\/td>\n

\n

70,26<\/p>\n<\/td>\n

\n

77,14<\/p>\n<\/td>\n

\n

64,52<\/p>\n<\/td>\n

\n

66,26<\/p>\n<\/td>\n

\n

69,22<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

Ch\u1ea5t l\u01b0\u1ee3ng d\u00e1n d\u00ednh (\u0110\u1ed9 b\u1ec1n k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo),<\/i> (MPa)<\/td>\n\n

TCVN 7756 – 9 : 2007<\/p>\n<\/td>\n

P=1,4<\/td>\n\n

3,21<\/p>\n<\/td>\n

\n

3,43<\/p>\n<\/td>\n

\n

3,53<\/p>\n<\/td>\n

\n

3,40<\/p>\n<\/td>\n

\n

3,60<\/p>\n<\/td>\n

\n

3,90<\/p>\n<\/td>\n

\n

3,28<\/p>\n<\/td>\n

\n

3,54<\/p>\n<\/td>\n

\n

3,82<\/p>\n<\/td>\n<\/tr>\n

P=1,6<\/td>\n\n

3,14<\/p>\n<\/td>\n

\n

3,49<\/p>\n<\/td>\n

\n

3.65<\/p>\n<\/td>\n

\n

3,61<\/p>\n<\/td>\n

\n

3,72<\/p>\n<\/td>\n

\n

4,42<\/p>\n<\/td>\n

\n

3,37<\/p>\n<\/td>\n

\n

3,63<\/p>\n<\/td>\n

\n

3,91<\/p>\n<\/td>\n<\/tr>\n

P=1,8<\/td>\n\n

4,63<\/p>\n<\/td>\n

\n

4,82<\/p>\n<\/td>\n

\n

4,88<\/p>\n<\/td>\n

\n

4,80<\/p>\n<\/td>\n

\n

5,00<\/p>\n<\/td>\n

\n

5,10<\/p>\n<\/td>\n

\n

4,75<\/p>\n<\/td>\n

\n

4,90<\/p>\n<\/td>\n

\n

4,98<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Ghi ch\u00fa:<\/b> P-\u00c1p su\u1ea5t \u00e9p (MPa), I- C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n (A), t- Th\u1eddi gian \u00e9p (gi\u00e2y)<\/p>\n

Nh\u1eadn x\u00e9t:<\/p>\n<\/div>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Khi thay \u0111\u1ed5i \u00e1p l\u1ef1c \u00e9p t\u1eeb 1,4 \u2013 1,8 MPa ho\u1eb7c t\u1eeb 1,6 \u2013 2,0 MPa th\u00ec kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch c\u1ee7a s\u1ea3n ph\u1ea9m thay \u0111\u1ed5i, c\u00e1c t\u00ednh ch\u1ea5t v\u1ec1 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y v\u00e0 kh\u1ea3 n\u0103ng th\u1ea5m n\u01b0\u1edbc c\u0169ng gi\u1ea3m d\u1ea7n khi t\u0103ng \u00e1p l\u1ef1c \u00e9p.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Khi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n t\u0103ng, th\u1eddi gian \u00e9p gi\u1ea3m, tuy nhi\u00ean, \u1edf ch\u1ec9 s\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 cao h\u01a1n 1,5 A th\u00ec ch\u1ea5t l\u01b0\u1ee3ng v\u00e1n gi\u1ea3m xu\u1ed1ng.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 L\u01b0\u1ee3ng keo tr\u00e1ng s\u1eed d\u1ee5ng cho c\u00f3t \u00e9p v\u00e0 v\u00e1n b\u00f3c l\u00e0 kh\u00e1c nhau r\u00f5 r\u1ec7t. \u0110\u1ed1i v\u1edbi c\u00f3t \u00e9p, l\u01b0\u1ee3ng keo tr\u00e1ng cao h\u01a1n 25%, song ch\u1ea5t l\u01b0\u1ee3ng d\u00e1n d\u00ednh cao h\u01a1n nhi\u1ec1u so v\u1edbi s\u1ea3n ph\u1ea9m \u00e9p t\u1eeb v\u00e1n b\u00f3c.<\/p>\n

Tr\u00ean c\u01a1 s\u1edf k\u1ebft qu\u1ea3 x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u00f4ng ngh\u1ec7 c\u1ee7a s\u1ea3n ph\u1ea9m m\u1eb7t gh\u1ebf cong hai chi\u1ec1u b\u1eb1ng c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c v\u1edbi c\u00e1c tr\u1ecb s\u1ed1 c\u00f4ng ngh\u1ec7, \u0111\u1ed1i chi\u1ebfu v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n, c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn nh\u01b0 sau:<\/p>\n\n\n\n\n\n\n\n\n
\n

S\u1ea3n ph\u1ea9m c\u00f3t \u0111an<\/b><\/p>\n<\/td>\n

\n

S\u1ea3n ph\u1ea9m v\u00e1n b\u00f3c<\/b><\/p>\n<\/td>\n<\/tr>\n

\u00c1p su\u1ea5t \u00e9p: P=\u00a0 2,0 MPa<\/td>\n\u00c1p su\u1ea5t \u00e9p: P=\u00a0 1,8 MPa<\/td>\n<\/tr>\n
C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n:\u00a0 I = 1,5 (A)<\/td>\nC\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n:\u00a0 I = 1,5 (A)<\/td>\n<\/tr>\n
Th\u1eddi gian gia nhi\u1ec7t cao t\u1ea7n:\u00a0 t = 240 (gi\u00e2y)<\/td>\nTh\u1eddi gian gia nhi\u1ec7t cao t\u1ea7n:\u00a0 t = 240 (gi\u00e2y)<\/td>\n<\/tr>\n
L\u01b0\u1ee3ng keo tr\u00e1ng: 250 (g\/cm2<\/sup>)<\/td>\nL\u01b0\u1ee3ng keo tr\u00e1ng: 200 (g\/cm2<\/sup>)<\/td>\n<\/tr>\n
\u0110\u1ed9 \u1ea9m v\u00e1n: 20 (%)<\/td>\n\u0110\u1ed9 \u1ea9m v\u00e1n: 20 (%)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"15-04-06<\/a><\/p>\n

K\u1ebeT LU\u1eacN<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 ch\u1ee7 y\u1ebfu \u0111\u1ec3 s\u1ea3n xu\u1ea5t m\u1eb7t gh\u1ebf cong hai chi\u1ec1u t\u1eeb c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u1edbi c\u00e1c tr\u1ecb s\u1ed1: \u00c1p su\u1ea5t \u00e9p: P=\u00a0 1,8 – 2,0 MPa; C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng cao t\u1ea7n:<\/p>\n

I = 1,5 (A); Th\u1eddi gian gia nhi\u1ec7t cao t\u1ea7n:\u00a0 t = 240 (gi\u00e2y).<\/p>\n

S\u1ea3n ph\u1ea9m m\u1eb7t gh\u1ebf cong hai chi\u1ec1u b\u1eb1ng c\u00f3t \u0111an v\u00e0 v\u00e1n b\u00f3c c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 v\u1eadt l\u00fd \u0111\u1ea3m b\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a v\u00e1n l\u00e0m \u0111\u1ed3 m\u1ed9c, c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh h\u00e0ng h\u00f3a l\u00e0m n\u1ed9i th\u1ea5t gia d\u1ee5ng v\u00e0 n\u1ed9i th\u1ea5t v\u0103n ph\u00f2ng ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u hi\u1ec7n nay c\u1ee7a th\u1ecb tr\u01b0\u1eddng, c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p.<\/p>\n

T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/b><\/p>\n

1. <\/i>Tr\u1ea7n Tu\u1ea5n Ngh\u0129a\u00a0 <\/i>(1999), \u201cC\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t c\u00f3t \u00e9p v\u00e0 t\u1ea5m l\u1ee3p l\u01b0\u1ee3n s\u00f3ng\u201d<\/i>, B\u00e1o c\u00e1o khoa h\u1ecdc, D\u1ef1 \u00e1n h\u1ee3p t\u00e1c qu\u1ed1c t\u1ebf Vi\u1ec7n KHLNVN – T\u1ed5 ch\u1ee9c M\u00e2y tre th\u1ebf gi\u1edbi (INBAR).<\/p>\n

2. <\/i>Tr\u1ea7n Tu\u1ea5n Ngh\u0129a (2007), <\/i>S\u01a1 b\u1ed9 th\u1ef1c tr\u1ea1ng ch\u1ebf bi\u1ebfn v\u00e0 xu\u1ea5t kh\u1ea9u c\u00e1c s\u1ea3n ph\u1ea9m th\u1ee7 c\u00f4ng m\u1ef9 ngh\u1ec7 t\u1eeb tre n\u1ee9a, song m\u00e2y c\u1ee7a vi\u1ec7t Nam<\/i>, T\u00e0i li\u1ec7u l\u00e0m vi\u1ec7c, 2007<\/p>\n

3. V\u0169 Huy \u0110\u1ea1i & Nguy\u1ec5n Minh H\u00f9ng, (2004), Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a qu\u00e1 tr\u00ecnh x\u1eed l\u00fd vi s\u00f3ng \u0111\u1ebfn t\u00ednh \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a g\u1ed7 Tr\u00e1m tr\u1eafng<\/i>, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, Xu\u00e2n Mai, H\u00e0 n\u1ed9i<\/p>\n

4. Nguy\u1ec5n Th\u1ecb Thanh Hi\u1ec1n, (2007), Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a t\u1ef7 l\u1ec7 k\u1ebft c\u1ea5u \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng v\u00e1n \u00e9p l\u1edbp tre – g\u1ed7<\/i>, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, H\u00e0 T\u00e2y<\/p>\n

5. Joseph J. Carr, (1997), Microwave & wrireless Communications Technology,USA<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

Nguy\u1ec5n Th\u1ecb Ph\u00fac T\u00d3M T\u1eaeT C\u00f9ng v\u1edbi th\u1eddi gian, s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a x\u00e3 h\u1ed9i c\u0169ng nh\u01b0 vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng, b\u1ea3o v\u1ec7 r\u1eebng t\u1ef1 nhi\u00ean \u0111ang ng\u00e0y c\u00e0ng c\u1ea1n ki\u1ec7t, hi\u1ec7n nay ng\u00e0nh ch\u1ebf bi\u1ebfn g\u1ed7 \u0111\u00e3 c\u00f3 nh\u1eefng b\u01b0\u1edbc thay \u0111\u1ed5i l\u1edbn v\u1ec1 nguy\u00ean li\u1ec7u. \u0110\u00f3 l\u00e0 s\u1ef1 c\u00f3 m\u1eb7t […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14540"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=14540"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14540\/revisions"}],"predecessor-version":[{"id":14546,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14540\/revisions\/14546"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}