Qhia koj yuav ua li cas xaiv cov neeg sawv cev kho epoxy resin?

Tus neeg sawv cev epoxy curing yog ib yam tshuaj siv los khocov tshuaj epoxylos ntawm kev cuam tshuam tshuaj lom neeg nrog cov pab pawg epoxy hauv cov epoxy resin los tsim cov qauv sib txuas, yog li ua rau cov epoxy resin ua cov khoom siv khov kho, ruaj khov.
Lub luag haujlwm tseem ceeb ntawm cov neeg sawv cev epoxy curing yog los txhim kho qhov tawv, kev tiv taus kev sib txhuam, thiab kev tiv taus tshuaj lom neeg ntawm epoxy resins, ua rau lawv yog cov khoom siv ntev thiab ruaj khov, uas yog ib feem tseem ceeb ntawm epoxy pultruded composites. Tsab xov xwm no qhia txog yuav ua li cas xaiv cov neeg sawv cev epoxy-curing raws li ntau yam sib txawv:
Raws li cov xwm txheej kho
- Kho kom zoo ntawm qhov kub thiab txias hauv chav tsev: Yog tias xav tau kev kho sai ntawm qhov kub thiab txias hauv chav tsev, cov neeg sawv cev kho aliphatic amine xws li ethylenediamine thiab diethylenetriamine tuaj yeem xaiv tau; yog tias qhov ceev kho tsis tas yuav tsum siab, thiab tsom mus rau lub sijhawm ua haujlwm, cov neeg sawv cev kho polyamide tuaj yeem xaiv tau.
- Kev kho cua sov: Rau qhov tiv taus cua sov siab thiab cov khoom siv kho tshuab, cov neeg sawv cev kho amine aromatic, xws li diaminodiphenylsulfone (DDS), thiab lwm yam, tuaj yeem siv tau; rau kev kho sai sai hauv qhov kub qis, cov neeg sawv cev kho amine hloov kho nrog cov khoom ua kom nrawm tuaj yeem xav txog.
- Kev kho kom zoo nyob rau hauv cov xwm txheej tshwj xeeb: rau kev kho kom zoo hauv qhov chaw noo noo, tus neeg sawv cev kho kom zoo uas ntub dej tuaj yeem xaiv tau; rau lub kaw lus kho kom zoo, tus neeg sawv cev kho kom zoo nrog photoinitiator thiab epoxy acrylate tuaj yeem xaiv tau.
Raws li cov kev cai ua tau zoo
- Cov khoom siv kho tshuab: yog tias xav tau qhov nyuaj thiab lub zog siab, cov neeg sawv cev kho anhydride tuaj yeem xaiv tau; yog tias xav tau kev ywj pheej zoo thiab kev cuam tshuam, cov neeg sawv cev kho kom tawv xws li roj hmab polysulfide yog qhov tsim nyog dua.
- Kev tiv thaiv tshuaj lom neeg: cov kev xav tau siab hauv kev tiv thaiv kua qaub, alkali, thiab cov kuab tshuaj,phenolic resintus neeg sawv cev curing lossis qee tus neeg sawv cev curing amine hloov kho yog qhov tsim nyog dua.
- Kev tiv taus cua sov: Rau qhov chaw kub siab, xws li siab dua 200 ℃, tus neeg sawv cev kho silicone lossis tus neeg sawv cev kho nrog cov qauv polyaromatic tuaj yeem xav txog.
Raws li qhov chaw siv
- Ib puag ncig sab hauv tsev: qhov yuav tsum tau muaj kev tiv thaiv ib puag ncig siab, tus neeg sawv cev kho epoxy uas siv dej lossis tus neeg sawv cev kho aliphatic amine uas tsis tshua muaj zog yog qhov tsim nyog dua.
- Ib puag ncig sab nraum zoov: yuav tsum tau tiv taus huab cua zoo, cov neeg sawv cev alicyclic amine uas muaj kev tiv thaiv UV zoo dua.
- Ib puag ncig tshwj xeeb: Hauv cov chaw uas muaj kev xav tau kev tu cev huv siab xws li zaub mov thiab tshuaj, cov neeg sawv cev kho epoxy uas tsis muaj tshuaj lom lossis tsis muaj tshuaj lom xws li cov neeg sawv cev kho polyamide uas tau ntawv pov thawj kev nyab xeeb zaub mov yuav tsum tau xaiv.
Xav txog cov kev cai ntawm cov txheej txheem
- Lub sijhawm ua haujlwm: Yog tias siv sijhawm ntev, xaiv cov tshuaj tua kab mob uas tsis pom tseeb, xws li dicyandiamide, thiab lwm yam. Yog tias siv sijhawm luv luv thiab siv sijhawm kho, xaiv cov tshuaj tua kab mob aliphatic amine uas kho sai.
- Kev Kho Kom Zoo: Yog xav kom cov xim tsis muaj xim thiab pob tshab, xaiv cov tshuaj kho alicyclic amine, thiab lwm yam. Yog xav tau xim tsawg, xaiv cov tshuaj kho amine uas pheej yig dua.
Ua ke nrog tus nqi ntawm tus nqi
- Raws li lub hauv paus ntawm kev ua tau raws li qhov yuav tsum tau ua, piv tus nqi thiab koob tshuaj ntawm cov neeg sawv cev kho sib txawv. Tus nqi ntawm cov neeg sawv cev kho amine feem ntau yog qis dua, thaum qee cov neeg sawv cev kho tshwj xeeb xws li cov neeg sawv cev kho uas muaj fluorine thiab silicone kim dua.