1, Kev siv cov thermoplastic hauv kev txhaj tshuaj molding
Thermoplastic yog hom yas feem ntau siv hauv kev txhaj tshuaj molding, uas muaj cov yam ntxwv ntawm kev hloov kho tom qab cua sov. Hom yas no yog melted los ntawm cua sov thaum lub sij hawm txhaj tshuaj molding txheej txheem, thiab ces txias thiab solidified nyob rau hauv pwm los tsim cov khoom yas zaum kawg.
Polypropylene (PP)
Polypropylene yog tus nqi qis, ua haujlwm siab thermoplastic nrog kev ua haujlwm kub zoo thiab tshuaj lom neeg ruaj khov. Nws yog dav siv hauv kev tsim cov thawv ntim khoom, cov khoom siv kho mob, cov khoom siv tsheb, thiab rooj tog zaum. Hauv kev txhaj tshuaj molding, polypropylene tau dhau los ua cov khoom siv rau ntau yam tshuaj molded khoom vim nws cov dej ntws zoo, yooj yim ntawm kev ua thiab molding.
Polyethylene (PE)
Polyethylene yog lwm hom thermoplastic nrog cov yam ntxwv ntawm softness, yooj, thiab tshuaj tsis kam. Nws yog feem ntau siv rau hauv kev tsim cov yeeb yaj kiab, lub hnab, cov kav dej, thiab cov xov hlau thiab cables. Hauv kev txhaj tshuaj molding, polyethylene tau dhau los ua qhov kev xaiv zoo tshaj plaws rau kev tsim cov khoom siv niaj hnub thiab ntim khoom vim nws yooj yim ntawm kev ua, tus nqi qis, thiab kub tsis kam.
Polyvinyl chloride (PVC)
Polyvinyl chloride yog ib qho nyuaj thiab ruaj khov thermoplastic nrog hluav taws kub thiab tshuaj lom neeg. Nws yog dav siv hauv kev tsim cov kav dej, qhov rais, cov plag tsev, thiab cov txheej txheem rwb thaiv tsev rau cov xov hluav taws xob. Hauv kev txhaj tshuaj molding, polyvinyl chloride tau dhau los ua cov khoom tseem ceeb rau kev tsim khoom thiab cov khoom siv hluav taws xob vim nws qhov zoo hardness thiab corrosion kuj.
Polystyrene (PS)
Polystyrene yog pob tshab thiab ua tau yooj yim thermoplastic nrog zoo pob tshab thiab glossiness. Nws yog feem ntau siv hauv kev tsim cov khoom siv hluav taws xob, cov khoom ua si, thiab cov khoom ntim khoom. Hauv kev txhaj tshuaj molding, polystyrene tau dhau los ua cov khoom siv rau kev tsim cov khoom yas pob tshab vim nws yooj yim molding, tsis tshua muaj nqi, thiab zoo pob tshab.
Acrylonitrile butadiene styrene copolymer (ABS)
ABS yog ib qho tawv thiab cuam tshuam resistant thermoplastic nrog tshuaj lom neeg zoo thiab qis qis qis. Nws yog dav siv hauv kev tsim cov casings rau tsheb, khoom siv hauv tsev, thiab cov khoom siv hluav taws xob. Hauv kev txhaj tshuaj molding, ABS tau dhau los ua cov khoom siv zoo tshaj plaws rau kev tsim cov khoom lag luam siab thiab cov khoom siv vim nws qhov kev cuam tshuam zoo heev thiab cov tshuaj tiv thaiv.
Polycarbonate (PC)
Polycarbonate yog ib qho thermoplastic uas muaj kev cuam tshuam zoo, pob tshab, thiab qhov zoo ntawm qhov ntev. Nws yog feem ntau siv rau hauv kev tsim cov lo ntsiab muag, xov tooj, thiab cov khoom siv hluav taws xob. Hauv kev txhaj tshuaj molding, polycarbonate tau dhau los ua cov khoom siv rau kev tsim kho qhov muag thiab cov khoom siv hluav taws xob vim nws cov pob tshab siab thiab cov khoom siv zoo.
2, Daim Ntawv Thov Tshwj Xeeb ntawm Thermosetting Plastics hauv Txhaj Molding
Ntxiv nrog rau cov yas thermoplastic, cov thermosetting yas kuj tseem siv rau kev txhaj tshuaj molding hauv qee cov ntawv tshwj xeeb. Thermosetting plastics harden tom qab cua sov thiab tsis tuaj yeem yaj dua, yog li lawv cov txheej txheem txhaj tshuaj molding txawv ntawm cov thermoplastic plastics.
phenolic cob
Phenolic resin yog ib qho nyuaj thiab ruaj khov thermosetting yas nrog zoo kub tsis kam thiab hluav taws xob rwb thaiv tsev. Nws yog feem ntau siv rau hauv kev tsim cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob. Txawm hais tias phenolic resin tsis yog siv dav hauv kev txhaj tshuaj molding li thermoplastic, nws tseem yog ib qho kev xaiv tseem ceeb hauv cov ntawv thov uas xav tau lub zog siab thiab kub ua haujlwm.
epoxy cob
Epoxy resin yog ib qho nyuaj thiab ruaj khov thermosetting yas uas muaj tshuaj lom neeg thiab adhesion zoo. Nws yog feem ntau siv rau hauv kev tsim cov nplaum, coatings, thiab cov ntaub ntawv sib xyaw. Hauv kev txhaj tshuaj molding, epoxy resin tuaj yeem siv los tsim cov khoom lag luam uas xav tau tshwj xeeb adhesion thiab tshuaj tiv thaiv vim nws qhov zoo adhesion thiab corrosion kuj.
3, Cov ntsiab cai ntawm kev xaiv cov yas yas hauv kev txhaj tshuaj molding
Thaum xaiv hom yas siv hauv kev txhaj tshuaj molding, ntau yam yuav tsum tau txiav txim siab, suav nrog kev ua haujlwm ntawm cov khoom, cov nqi ua haujlwm, thiab muaj.
Cov khoom xav tau kev ua haujlwm
Cov kev ua tau zoo ntawm cov khoom yog qhov tseem ceeb tshaj plaws kev txiav txim siab thaum xaiv hom yas. Piv txwv li, cov khoom uas xav tau lub zog siab thiab hnav tsis kam tuaj yeem xaiv polyamide (PA) lossis polyoxymethylene (POM); Cov khoom lag luam uas xav tau kom pom tseeb thiab cuam tshuam tsis zoo tuaj yeem xaiv polycarbonate (PC) thiab lwm yam ntaub ntawv.
Tus nqi ua haujlwm
Tus nqi ua haujlwm kuj yog ib qho tseem ceeb rau kev txiav txim siab thaum xaiv hom yas. Tus nqi raw khoom, kev ua haujlwm nyuaj, thiab cov nqi pwm ntawm cov yas sib txawv tuaj yeem cuam tshuam tus nqi ntawm cov khoom kawg. Yog li ntawd, thaum xaiv hom yas, nws yog ib qho tsim nyog yuav tsum xav txog ob qho tib si ua cov nqi thiab kev tsim khoom kom tiav.
kev siv tau
Qhov muaj ntawm hom yas kuj yog ib qho tseem ceeb rau kev txiav txim siab thaum xaiv. Qee cov yas yuav nyuaj rau tau txais hauv qee thaj tsam lossis kev lag luam vim muaj teeb meem ntawm cov saw hlau lossis kev txwv ib puag ncig. Yog li ntawd, thaum xaiv hom yas, nws yog ib qho tsim nyog los xyuas kom meej tias cov khoom xaiv tau muaj txaus nyob rau hauv cheeb tsam xav tau thiab kev lag luam.
