Cov roj epoxy

1,Kev Taw Qhia

Feem ntau cov epoxy resin siv ua ke nrog cov khoom ntxiv. Cov khoom ntxiv tuaj yeem xaiv tau raws li kev siv sib txawv. Cov khoom ntxiv feem ntau suav nrog Curing Agent, Modifier, Filler, Diluent, thiab lwm yam.

Tus neeg sawv cev curing yog ib qho khoom siv ntxiv uas tsis tuaj yeem tsis quav ntsej. Txawm hais tias epoxy resin siv los ua cov nplaum, txheej, castable, tus neeg sawv cev curing yuav tsum tau ntxiv, txwv tsis pub nws tsis tuaj yeem kho tau. Vim muaj ntau yam kev xav tau ntawm kev siv thiab kev ua tau zoo, muaj ntau yam kev xav tau rau epoxy resin, tus neeg sawv cev curing, modifier, filler, diluent thiab lwm yam khoom ntxiv.

2,Kev Xaiv Cov Epoxy Resin

(1) Xaiv raws li Daim Ntawv Thov

① Thaum siv ua cov nplaum, nws yog qhov zoo dua los xaiv cov resin nrog cov nqi epoxy nruab nrab (0.25-0.45);

② Thaum siv ua castable, nws yog qhov zoo dua los xaiv cov resin nrog cov nqi epoxy siab (0.40);

③ Thaum siv ua txheej, cov resin nrog epoxy nqi qis (< 0.25) feem ntau yog xaiv.

(2) Xaiv raws li Mechanical Strength

Lub zog muaj feem cuam tshuam nrog qib ntawm kev sib txuas. Tus nqi epoxy siab, thiab qib kev sib txuas kuj siab tom qab kho. Tus nqi epoxy qis thiab qib kev sib txuas qis tom qab kho. Tus nqi epoxy sib txawv kuj yuav ua rau muaj zog sib txawv.

① Cov resin nrog epoxy nqi siab muaj zog dua tab sis nws yog brittle;

② Cov resin nrog nruab nrab epoxy nqi muaj zog zoo ntawm qhov kub siab thiab qis;

③ Cov resin uas muaj tus nqi epoxy qis muaj lub zog tsis zoo thaum kub siab.

(3) Xaiv raws li Kev Xav Tau Ua Haujlwm

① Rau cov neeg uas tsis xav tau kev kub thiab lub zog siab, lawv tuaj yeem xaiv cov resin nrog cov nqi epoxy qis dua uas tuaj yeem qhuav sai thiab tsis yooj yim ploj.

② Rau cov neeg uas xav tau kev nkag tau zoo thiab lub zog, lawv tuaj yeem xaiv cov resin nrog tus nqi epoxy siab dua.

3,Kev Xaiv Tus Neeg Sawv Cev Kho

(1) Hom Tshuaj Kho:

Cov tshuaj tua kab mob rau epoxy resin feem ntau suav nrog aliphatic amine, alicyclic amine, aromatic amine, polyamide, anhydride, resin thiab tertiary amine. Tsis tas li ntawd, nyob rau hauv qhov cuam tshuam ntawm photoinitiator, UV lossis lub teeb kuj tuaj yeem ua rau epoxy resin tua kab mob. Amine curing agent feem ntau yog siv rau qhov kub thiab txias hauv chav tsev lossis qhov kub qis, thaum anhydride thiab aromatic curing agent feem ntau yog siv rau cua sov curing.

(2) Kev Siv Tshuaj Kho Mob

① Thaum amine siv los ua tus neeg sawv cev crosslinking, nws yog xam raws li nram no:

Amine dosage = MG / HN

M = qhov hnyav molecular ntawm amine;

HN = tus naj npawb ntawm cov hydrogen uas nquag ua haujlwm;

G = tus nqi epoxy (epoxy sib npaug rau 100 g ntawm epoxy resin)

Qhov kev hloov pauv tsis pub ntau tshaj 10-20%. Yog tias kho nrog amine ntau dhau, cov resin yuav tawg yooj yim. Yog tias cov tshuaj tsawg dhau, qhov kev kho tsis zoo tag nrho.

② Thaum anhydride siv los ua tus neeg sawv cev crosslinking, nws yog xam raws li nram no:

Cov tshuaj Anhydride = MG (0.6 ~ 1) / 100

M = qhov hnyav molecular ntawm anhydride;

G = tus nqi epoxy (0.6 ~ 1) yog tus coefficient ntawm kev sim.

(3) Lub Ntsiab Cai ntawm Kev Xaiv Tus Neeg Sawv Cev Kho

① Cov Kev Cai Ua Tau Zoo.

Qee qhov yuav tsum tau ua kom kub thiab txias, qee qhov yuav tsum tau yoog tau, thiab lwm qhov yuav tsum tau ua kom tsis txhob xeb. Cov tshuaj kho kom zoo raug xaiv raws li qhov xav tau sib txawv.

② Txoj Kev Kho.

Qee cov khoom tsis tuaj yeem ua kom sov, ces tus neeg sawv cev kho kom sov tsis tuaj yeem xaiv tau.

③ Lub Sijhawm Thov.

Lub sijhawm thov yog lub sijhawm txij li lub sijhawm uas cov epoxy resin raug ntxiv nrog cov tshuaj kho kom txog rau lub sijhawm uas nws siv tsis tau. Yog tias siv ntev, feem ntau siv cov anhydrides lossis cov tshuaj kho kom tsis txhob lo.

④ Kev Nyab Xeeb.

Feem ntau, tus neeg sawv cev kho uas muaj tshuaj lom tsawg dua zoo dua thiab muaj kev nyab xeeb rau kev tsim khoom.

⑤ Tus nqi.

4,Kev Xaiv Tus Hloov Kho

Cov nyhuv ntawm modifier yog los txhim kho tanning, shearing tsis kam, bending tsis kam, cuam tshuam tsis kam thiab rwb thaiv tsev kev ua tau zoo ntawm epoxy resin.

(1) Cov Kev Hloov Kho thiab Cov Yam Ntxwv Feem Ntau

① Polysulfide roj hmab: txhim kho lub zog cuam tshuam thiab kev tiv thaiv tev tawm;

② Polyamide resin: txhim kho brittleness thiab adhesion;

③ Polyvinyl cawv TERT butyraldehyde: txhim kho qhov cuam tshuam tanning tsis kam;

④ NBR: txhim kho kev cuam tshuam tanning tsis kam;

⑤ Phenolic resin: txhim kho qhov kub thiab txias tsis kam thiab corrosion tsis kam;

⑥ Polyester resin: txhim kho qhov cuam tshuam tanning tsis kam;

⑦ Urea formaldehyde melamine resin: ua rau cov tshuaj tiv thaiv thiab lub zog ntxiv;

⑧ Furfural resin: txhim kho qhov kev ua tau zoo ntawm kev khoov zoo li qub, txhim kho kev tiv thaiv kua qaub;

⑨ Vinyl resin: txhim kho kev tiv thaiv tev tawm thiab lub zog cuam tshuam;

⑩ Isocyanate: txo cov dej noo permeability thiab ua kom dej tsis kam;

11 Silicone: txhim kho kev tiv thaiv cua sov.

(2) Kev Noj Tshuaj

① Polysulfide roj hmab: 50-300% (nrog tus neeg sawv cev kho);

② Polyamide resin thiab phenolic resin: 50-100%;

③ Polyester resin: 20-30% (tsis muaj tus neeg sawv cev kho, lossis me ntsis ntawm tus neeg sawv cev kho kom nrawm dua.

Feem ntau hais lus, qhov ntau dua modifier siv, qhov ntau dua qhov yooj ywm yog, tab sis qhov kub thermal deformation ntawm cov khoom resin txo qis raws li. Txhawm rau txhim kho qhov yooj ywm ntawm cov resin, cov neeg sawv cev toughening xws li dibutyl phthalate lossis dioctyl phthalate feem ntau siv.

5,Kev Xaiv Cov Khoom Siv Sau

Lub luag haujlwm ntawm cov khoom sau yog los txhim kho qee yam khoom ntawm cov khoom thiab cov cua sov dissipation mob ntawm resin kho. Nws kuj tseem tuaj yeem txo qhov ntau ntawm epoxy resin thiab txo tus nqi. Cov khoom sau sib txawv tuaj yeem siv rau ntau lub hom phiaj. Nws yuav tsum tsawg dua 100 mesh, thiab qhov ntau npaum li cas nyob ntawm nws daim ntawv thov. Cov khoom sau feem ntau yog raws li nram no:

(1) Asbestos fiber thiab iav fiber: ua kom muaj zog thiab tiv taus kev cuam tshuam;

(2) Hmoov Quartz, hmoov porcelain, hmoov hlau, cement, emery: ua kom tawv dua;

(3) Alumina thiab porcelain hmoov: ua kom cov nplaum muaj zog thiab lub zog kho tshuab nce ntxiv;

(4) Hmoov Asbestos, hmoov silica gel thiab cov cement kub siab: txhim kho kev tiv taus cua sov;

(5) Hmoov Asbestos, hmoov quartz thiab hmoov pob zeb: txo qhov nrawm ntawm kev ntswj;

(6) Hmoov txhuas, hmoov tooj liab, hmoov hlau thiab lwm yam hmoov hlau: ua kom muaj kev thermal conductivity thiab conductivity ntau ntxiv;

(7) Hmoov graphite, hmoov talc thiab hmoov quartz: txhim kho kev ua haujlwm tiv thaiv kev hnav thiab kev ua haujlwm lubrication;

(8) Emery thiab lwm yam abrasives: txhim kho kev ua haujlwm tiv thaiv kev hnav;

(9) Hmoov mica, hmoov porcelain thiab hmoov quartz: ua kom muaj kev rwb thaiv tsev zoo dua;

(10) Txhua yam xim thiab graphite: nrog xim;

Ntxiv rau, raws li cov ntaub ntawv, qhov ntau ntxiv (27-35%) ntawm P, As, Sb, Bi, Ge, Sn thiab Pb oxides ntxiv rau hauv cov resin tuaj yeem tswj tau qhov lo rau hauv qab kub thiab siab.

6,Kev Xaiv Cov Tshuaj Diluent

Lub luag haujlwm ntawm diluent yog txo qhov viscosity thiab txhim kho qhov permeability ntawm cov resin. Nws tuaj yeem muab faib ua ob pawg inert thiab active, thiab qhov ntau feem ntau tsis pub ntau tshaj 30%. Cov diluents feem ntau suav nrog diglycidyl ether, polyglycidyl ether, propylene oxide butyl ether, propylene oxide phenyl ether, dicyclopropane ethyl ether, triethoxypropane propyl ether, inert diluent, xylene, toluene, acetone, thiab lwm yam.

7,Cov Khoom Siv Yuav Tsum Tau Ua

Ua ntej ntxiv cov tshuaj kho, txhua yam khoom siv, xws li cov resin, cov tshuaj kho, cov khoom sau, cov khoom hloov kho, cov tshuaj diluent, thiab lwm yam, yuav tsum tau kuaj xyuas, uas yuav tsum ua tau raws li cov hauv qab no:

(1) Tsis muaj dej: cov ntaub ntawv uas muaj dej yuav tsum tau qhuav ua ntej, thiab cov kuab tshuaj uas muaj dej me me yuav tsum tau siv tsawg li tsawg tau.

(2) Kev Huv Si: cov ntsiab lus ntawm cov khoom tsis huv uas tsis yog dej yuav tsum tsawg dua 1%. Txawm hais tias nws kuj siv tau nrog 5% -25% cov khoom tsis huv, lwm cov ntaub ntawv 'feem pua ​​​​​​hauv cov mis yuav tsum tau nce. Nws yog qhov zoo dua los siv qib reagent hauv qhov ntau me me.

(3) Lub Sijhawm Siv Tau: Yuav tsum paub seb cov ntaub ntawv puas siv tsis tau.