Cov khoom siv ntawm cov khoom yas yog dab tsi?

Cov khoom siv ntawm cov khoom yas yog dab tsi?

Cov khoom yas feem ntau muab faib ua ob hom thermoplastic thiab thermosetting, hauv qab no yog cov lus qhia ntxaws ntxaws, Kuv vam tias yuav pab tau.

1. Thermoplastic

Thermoplastics, tseem hu ua thermoplastic resins, yog cov khoom tseem ceeb ntawm cov yas.Lawv yog tsim los ntawm cov khoom siv hluavtaws polymer uas tuaj yeem ntws mus rau ib leeg los ntawm kev yaj nrog cua sov thiab tuaj yeem kho dua.Cov ntaub ntawv no feem ntau muaj qhov hnyav molecular thiab muaj cov qauv rov ua dua molecular saw.Thermoplastics tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding, extrusion, tshuab moulding, calendering thiab lwm yam txheej txheem los ua cov khoom thiab cov khoom ntawm ntau yam duab thiab ntau thiab tsawg.

(1) Polyethylene (PE): PE yog ib qho ntawm cov yas uas siv ntau tshaj plaws hauv kev ntim khoom, cov kav dej, cov xaim hluav taws xob thiab lwm yam.Raws li nws cov qauv molecular thiab ntom, PE tuaj yeem muab faib ua high density polyethylene (HDPE), low density polyethylene (LDPE) thiab linear low density polyethylene (LLDPE).

Polypropylene (PP): PP kuj yog ib hom yas, feem ntau siv hauv ntim, fwj, thiab khoom siv kho mob.PP yog cov yas semi-crystalline, yog li nws yog tawv thiab pob tshab dua PE.

(3) Polyvinyl chloride (PVC): PVC yog ib lub ntiaj teb cov khoom siv ntau tshaj plaws ntawm cov yas, dav siv hauv cov ntaub ntawv siv, hlau insulators, ntim khoom thiab cov khoom siv kho mob thiab lwm yam.PVC tuaj yeem ua xim thiab tiv taus ntau yam tshuaj.

(4) Polystyrene (PS) : PS feem ntau yog siv los ua cov khoom ntim hnyav, pob tshab, xws li cov thawv ntim khoom noj thiab cov thawv ntim khoom.PS kuj tau siv dav los ua npuas dej, xws li EPS ua npuas ncauj.

Acrylonitrile-butadiene-styrene copolymer (ABS): ABS yog cov yas tawv tawv, feem ntau siv los ua cov cuab yeej, cov khoom siv hluav taws xob, thiab cov khoom pib.

(6) Lwm tus: Tsis tas li ntawd, muaj ntau hom thermoplastics, xws li polyamide (PA), polycarbonate (PC), polyformaldehyde (POM), polytetrafluoroethylene (PTFE) thiab lwm yam.

2, thermosetting yas

Thermosetting plastics yog ib chav tshwj xeeb ntawm cov yas, txawv ntawm cov thermoplastics.Cov ntaub ntawv no tsis soften thiab ntws thaum rhuab, tab sis yog kho los ntawm tshav kub.Thermosetting plastics feem ntau muaj zog dua thiab hardness thiab haum rau cov ntawv thov uas yuav tsum tau muaj zog dua thiab muaj zog.

Epoxy resin (EP): Epoxy resin yog ib qho tawv thermosetting yas siv dav hauv kev tsim kho, hluav taws xob thiab kev lag luam tsheb.Epoxy resins tuaj yeem hnov ​​​​mob nrog rau lwm cov ntaub ntawv los tsim cov nplaum nplaum thiab cov coatings.

(2) Polyimide (PI) : Polyimide yog cov yas tiv taus cua sov uas tuaj yeem tswj nws cov khoom ntawm qhov kub thiab txias.Nws yog dav siv nyob rau hauv aerospace, electronics thiab automotive industries los tsim high-temperature resistant Cheebtsam thiab coatings.

(3) Lwm tus: Tsis tas li ntawd, muaj ntau lwm yam thermosetting plastics, xws li phenolic resin, furan resin, unsaturated polyester thiab lwm yam.