{"id":20345,"date":"2020-06-18T15:35:19","date_gmt":"2020-06-18T08:35:19","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=20345"},"modified":"2020-07-10T22:08:14","modified_gmt":"2020-07-10T15:08:14","slug":"thong-tin-luan-an-tien-si-cua-nghien-cuu-sinh-vu-dinh-thinh","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/thong-tin-luan-an-tien-si-cua-nghien-cuu-sinh-vu-dinh-thinh\/","title":{"rendered":"Th\u00f4ng tin Lu\u1eadn \u00e1n Ti\u1ebfn s\u0129 c\u1ee7a Nghi\u00ean c\u1ee9u sinh V\u0169 \u0110\u00ecnh Th\u1ecbnh"},"content":{"rendered":"

T\u00ean \u0111\u1ec1 t\u00e0i lu\u1eadn \u00e1n:<\/strong> \u201c<\/strong>Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f4ng ngh\u1ec7 t\u1ea1o v\u00e1n composite v\u1ecf c\u00e2y Keo tai t\u01b0\u1ee3ng (Acacia mangium<\/em> Wild)\u201d<\/p>\n

Chuy\u00ean ng\u00e0nh<\/strong>: K\u1ef9 thu\u1eadt Ch\u1ebf bi\u1ebfn l\u00e2m s\u1ea3n\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0M\u00e3 s\u1ed1: <\/strong>9549001<\/p>\n

H\u1ecd v\u00e0 t\u00ean nghi\u00ean c\u1ee9u sinh:<\/strong> V\u0169 \u0110\u00ecnh Th\u1ecbnh<\/p>\n

H\u1ecd v\u00e0 t\u00ean c\u00e1n b\u1ed9 h\u01b0\u1edbng d\u1eabn: <\/strong>PGS. TS. V\u0169 Huy \u0110\u1ea1i; PGS. TS. Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc<\/p>\n

T\u00ean c\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o:<\/strong> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

T\u00d3M T\u1eaeT NH\u1eeeNG K\u1ebeT LU\u1eacN M\u1edaI C\u1ee6A LU\u1eacN \u00c1N:<\/strong><\/p>\n

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  1. X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u t\u1ea1o hi\u1ec3n vi, si\u00eau hi\u1ec3n vi, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a v\u1ecf c\u00e2y g\u1ed7 Keo tai t\u01b0\u1ee3ng l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng t\u1ea1o v\u00e1n composite v\u1ecf c\u00e2y: Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch kh\u00f4 ki\u1ec7t c\u1ee7a v\u1ecf c\u00e2y \u0111\u1ea1t 0,722g\/cm3<\/sup>; Chi\u1ec1u d\u00e0i s\u1ee3i v\u1ecf c\u00e2y \u0111\u1ea1t t\u1eeb 690,31-1634,73 mm, chi\u1ec1u r\u1ed9ng s\u1ee3i t\u1eeb 13,32-35,91 mm; H\u00e0m l\u01b0\u1ee3ng xenlulo 26,95%, lignin 24,07%, \u0111\u1ed9 pH 7,5.<\/li>\n
  2. X\u00e1c l\u1eadp \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 lu\u1eadn c\u1ee9 khoa h\u1ecdc v\u1ec1 t\u1ea1o v\u00e1n composite v\u1ecf c\u00e2y Keo tai t\u01b0\u1ee3ng trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 v\u00e0 kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh: V\u00e1n composite d\u0103m v\u1ecf c\u00e2y kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh \u1edf ch\u1ebf \u0111\u1ed9 \u00e9p: th\u1eddi gian \u00e9p 18 ph\u00fat, nhi\u1ec7t \u0111\u1ed9 \u00e9p 1800<\/sup>C, \u00e1p l\u1ef1c \u00e9p 1,6 MPa \u0111\u1ea1t IB l\u00e0 (0,25 MPa) v\u00e0 MOR l\u00e0 (11,64) \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a v\u00e1n d\u0103m th\u00f4ng d\u1ee5ng s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u00f4; V\u00e1n composite d\u0103m v\u1ecf c\u00e2y – d\u0103m g\u1ed7 v\u1edbi t\u1ef7 l\u1ec7 k\u1ebft c\u1ea5u 1\/3\/1 t\u01b0\u01a1ng \u1ee9ng v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u: d\u0103m g\u1ed7\/d\u0103m v\u1ecf c\u00e2y\/d\u0103m g\u1ed7 = 20\/60\/20 (%) c\u00f3 s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh keo (UF 10%) \u1edf ch\u1ebf \u0111\u1ed9 \u00e9p: th\u1eddi gian \u00e9p 18 ph\u00fat, nhi\u1ec7t \u0111\u1ed9 \u00e9p 1800<\/sup>C, \u00e1p l\u1ef1c \u00e9p 1,6 Mpa \u0111\u1ea1t \u0111\u1ed9 b\u1ec1n k\u00e9o vu\u00f4ng g\u00f3c b\u1ec1 m\u1eb7t v\u00e1n v\u00e0 \u0111\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh cho gi\u00e1 tr\u1ecb cao nh\u1ea5t, IB l\u00e0 (0,44 MPa), MOR l\u00e0 (23,28 MPa) \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a v\u00e1n d\u0103m th\u00f4ng d\u1ee5ng s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng kh\u00f4.<\/li>\n
  3. X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed1i quan h\u1ec7 th\u1ec3 hi\u1ec7n b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh h\u1ed3i quy gi\u1eefa c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 ch\u1ebf \u0111\u1ed9 \u00e9p (nhi\u1ec7t \u0111\u1ed9 \u00e9p, th\u1eddi gian \u00e9p, \u00e1p su\u1ea5t \u00e9p v\u00e0 bi\u1ec3u \u0111\u1ed3 \u00e9p), t\u1ef7 l\u1ec7 k\u1ebft c\u1ea5u gi\u1eefa d\u0103m v\u1ecf c\u00e2y v\u00e0 d\u0103m g\u1ed7 Keo tai t\u01b0\u1ee3ng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng v\u00e1n composite.<\/li>\n
  4. \u0110\u1ed9 h\u00fat n\u01b0\u1edbc, \u0111\u1ed9 tr\u01b0\u01a1ng n\u1edf chi\u1ec1u d\u00e0y c\u1ee7a v\u00e1n composite v\u1ecf c\u00e2y kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh v\u1eabn c\u00f2n cao, do v\u1eady n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i v\u00e1n n\u00e0y trong m\u00f4i tr\u01b0\u1eddng kh\u00f4 l\u00e0m v\u1eadt li\u1ec7u c\u00e1ch \u00e2m, c\u00e1ch nhi\u1ec7t.<\/li>\n
  5. C\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 ch\u00ednh t\u1ea1o v\u00e1n composite v\u1ecf c\u00e2y Keo tai t\u01b0\u1ee3ng trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u00f3 v\u00e0 kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 d\u0103m v\u1ecf c\u00e2y k\u1ebft h\u1ee3p v\u1edbi d\u0103m g\u1ed7: Th\u1eddi gian \u00e9p (\u03c4): 18 ph\u00fat; Nhi\u1ec7t \u0111\u1ed9 \u00e9p (T): 180 o<\/sup>C; \u00c1p l\u1ef1c \u00e9p (P): 1,6 Mpa.<\/li>\n
  6. H\u1ec7 s\u1ed1 ti\u00eau \u00e2m c\u1ee7a v\u00e1n composite d\u0103m v\u1ecf c\u00e2y kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh c\u00f3 h\u1ec7 s\u1ed1 ti\u00eau \u00e2m cao nh\u1ea5t \u0111\u1ea1t 0,263. H\u1ec7 s\u1ed1 ti\u00eau \u00e2m gi\u1ea3m d\u1ea7n \u1edf v\u00e1n composite d\u0103m g\u1ed7 ph\u1ed1i h\u1ee3p v\u1edbi d\u0103m v\u1ecf c\u00e2y v\u00e0 th\u1ea5p nh\u1ea5t v\u1edbi v\u00e1n d\u0103m g\u1ed7 \u0111\u1ea1t 0,078.<\/li>\n
  7. Kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t c\u1ee7a v\u00e1n composite v\u1ecf c\u00e2y kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft d\u00ednh v\u1edbi h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t \u0111\u1ea1t 0,236 W\/mK t\u1ed1t h\u01a1n v\u00e1n composite ho\u00e0n to\u00e0n t\u1eeb d\u0103m g\u1ed7 v\u1edbi h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t \u0111\u1ea1t 0,427 W\/mK. T\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c lo\u1ea1i v\u00e1n composite ph\u1ed1i h\u1ee3p gi\u1eefa d\u0103m g\u1ed7 v\u00e0 d\u0103m v\u1ecf c\u00e2y th\u00ec kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t gi\u1ea3m khi t\u1ef7 l\u1ec7 d\u0103m g\u1ed7 t\u0103ng.<\/li>\n<\/ol>\n

    Th\u00f4ng tin lu\u1eadn\u00a0\u00e1n v\u00e0 to\u00e0n v\u0103n lu\u1eadn\u00a0\u00e1n\u00a0\u0111\u00e3\u00a0\u0111\u01b0\u1ee3c\u00a0\u0111\u0103ng t\u1ea3i c\u00f4ng khai tr\u00ean trang th\u00f4ng tin c\u1ee7a B\u1ed9 Gi\u00e1o d\u1ee5c v\u00e0\u00a0\u0110\u00e0o t\u1ea1o t\u1ea1i\u00a0\u0111\u01b0\u1eddng link:\u00a0http:\/\/luanvan.moet.edu.vn\/?page=1.32&view=35388<\/a><\/em><\/p>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    T\u00ean \u0111\u1ec1 t\u00e0i lu\u1eadn \u00e1n: \u201cNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u00f4ng ngh\u1ec7 t\u1ea1o v\u00e1n composite v\u1ecf c\u00e2y Keo tai t\u01b0\u1ee3ng (Acacia mangium Wild)\u201d Chuy\u00ean ng\u00e0nh: K\u1ef9 thu\u1eadt Ch\u1ebf bi\u1ebfn l\u00e2m s\u1ea3n\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0M\u00e3 s\u1ed1: 9549001 H\u1ecd v\u00e0 t\u00ean nghi\u00ean c\u1ee9u sinh: V\u0169 \u0110\u00ecnh Th\u1ecbnh H\u1ecd v\u00e0 t\u00ean c\u00e1n b\u1ed9 h\u01b0\u1edbng d\u1eabn: PGS. TS. V\u0169 Huy […]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42,66,35],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/20345"}],"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\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=20345"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/20345\/revisions"}],"predecessor-version":[{"id":20347,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/20345\/revisions\/20347"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=20345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=20345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=20345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}