Gioi Thieu Composite

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GI I THIU

CHUNG

CH NG 1


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1.1. Khi ni m

v Vt liu composite l vt liu t hp (mc v m) cahai hay nhiu vt liu (VL) thnh phn nhm to ra VLmi c tnh cht tri hn tnh cht ca tng VL thnhphn.

T hp cc tnh cht

To tnh cht mi

Si thu tinh + Nha polyeste = GRP*(bn) (khng ho cht) (bn v khng ho cht)

Si thu tinh + Nha polyeste = GRP(gin) (gin) (do dai)

*GRP: Glass Reinforced


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V d

v 1.1. Khi nim

v G (xenlulo/lignin), xng(collagen/protein+mui canxi

pht pho),..

v Vn p, gch n tru hoc si thc vt, btng ct

thp, tng t ct tre, v Composite nha (UPE, epoxy,) v si thu tinh,si

cacbon,

v Hp kimv Hn hp polyme

C phi l vt liu composite?


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1.2. Thnh phn ca VL compositeVt liu nn + Vt liu gia cng

Polyme

Kim loi

Ceramic

Si cacbon

Si thu tinh

Si Aramic (Kevlar)

Si, ht kim loi

VL composite gm mt hay nhiu

pha gin on (VL gia cng)phn b trong pha lin tc (VLnn)


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Vai tr c a cc v t li u

thnh ph n

v 1.2. Thnh phn ca VLC

Vt liu nn Vt liu gia cng

Lin kt VL gia cng ng vai tr l cc im chu ng

sut tp trung

Chuyn ng sut sang ct khi cngoi lc tc dng ln VL.

Thng c tnh cht c l ho caohn VL nn.

Bo v si khi b h hng do tn

cng ca mi trng

Cch in, tng do dai, vv


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1.3. C ch gia c ng c a VLC

v C ch gia cng: di tc dng ca ngoilc, vt liu gia cng (VLGC) s l nhngim chu ng sut tp trung do pha nntruyn sang VLGC dng si truyn ti ng sut tt hn VLGC

dng ht, do ng sut ti mt im bt k trn sic phn b u trn ton b chiu di, do timi im s chu ng sut nh hn nhiu so viVLGC dng ht di tc dng ngoi lc nh nhau

Kh nng truyn ti trng t VL nn sang VL giacng ph thuc: VL nn, VL gia cng, kt dnh tib mt tip xc ca VL nn v VL gia cng


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1.4.1. Phn lo i theo hnh d ng

v t li u gia c ng

v 1.4. Phn loi

v Composite ct si Compozit ct si: l compozit c gia cng bi si, n c

bn ring v modun n hi cao. VD: Compozit si thu

tinh, cacbon, xenlulo

Si lin tc (si di, vi): t l chiu di / ng knh (l/d)

rt cao, d =3-200 m

Si gin on (si ngn, vn): 5 < l/d < 1000, d = 0,02-

100.

Compozit ct ht: l compozit c gia cng bi cc ht vi

cc dng v c kch khc nhau. (B tng, g p, Mt s ct

ht nh: vy mica, ht cao lanh, CaCO3, bt hoc vy st,

ng, nhm., bt g,...)


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1.4.1. Phn lo i theo hnh d ng v t li u gia c ng


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1.4.2. Phn lo i theo b n ch t VL

n n

v 1.4. Phn loi

v Nn hu c (nha) vi VL gia cng dng Si hu c: si polyamit, Kevlar, xenlulo

Si khong: si thu tinh, cacbon, basalt

Si kim loi: si bo, nhm

Kh nng chu nhit n 3000Cv Nn kim loi (hp kim nhm, hp kim titan..) vi VL gia

cng dng: Si kim loi: bo

Si khong: si cacbon

Kh nng chu nhit n 6000C

v Nn gm: vi VL gia cng dng:

Si kim loi: bo,


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1.5. Tnh cht chung ca VLC

v Khi lng ring b do vy tnh nng c l ring cao hnthp v cc VL truyn thng khc (thu tinh, gm s, g, ) rt nhiu

v Chu mi trng, khng ho cht cao, khng tn kmtrong bo qun v chng n mn, khng cn sn boqun nh kim loi, g

v Cch In cch nhit ttv Bn lu (thi gian s dng di hn kim loi, g 2-3 ln)v Gia cng ch to n gin, a dng, d to hnh, thay i

v sa cha; chi ph u t thit b gia cng thp


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1.5. Tnh cht chung ca VLC

v Cc yu t nh hng n tnh nng gia cng Bn cht VL ct Bn cht VL nn bn lin kt b mt tip xc pha T l VL gia cng/VL nn trong composite

Hnh dng, kch thc ca VL gia cng nh hng, s phn b ca VL gia cng

(nu l si)


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Khi lng ring (Density) ca mt vi vt liu

v 1.5. Tnh cht chung ca VLC


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bn ko ring (Specific Tensil Strength)



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M un ko ring (Specific

Tensile Modulus)



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v 1.6. ng dng ca VLC


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Trong hng khng, v tr



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Trong cng ngh xe hi



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Trong cng ngh xe hi



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Trong cng ngh xe hi



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Trong thit bi th thao



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1.6. ng dng ca VLCTrong hng hai

v Luxury yacht : AB 116 - 35.5m

v flybridge super-yacht (composite)

v Tu h tng tn la lp Gepard3.9


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Trong hng hai


http://viennccttauthuy.com.vn
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Trong hng hai


http://viennccttauthuy.com.vn
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Gioi Thieu Composite