Cov khoom siv yas yog cov khoom los yog elastomeric nyob rau hauv chav tsev kub, thiab cov ntaub ntawv raw yog rhuab thaum lub sij hawm ua kom lawv hloov mus rau hauv cov kua, molten kua.Cov yas tuaj yeem muab faib ua "thermoplastics" thiab "thermosets" raws li lawv cov yam ntxwv ua.
"Thermoplastics" tuaj yeem ua kom sov thiab zoo li ntau zaus thiab tuaj yeem rov ua dua.Lawv yog cov kua dej zoo li slime thiab muaj lub xeev qeeb melting.Feem ntau siv cov thermoplastics yog PE, PP, PVC, ABS, thiab lwm yam. Thermosets solidify mus tas li thaum rhuab thiab txias.Cov saw hlau molecular tsim cov tshuaj sib txuas thiab dhau los ua cov qauv ruaj khov, yog li txawm tias nws rov ua kom sov dua, nws tsis tuaj yeem ncav cuag lub xeev ua kua.Epoxies thiab roj hmab yog cov piv txwv ntawm cov thermoset yas.
Cov hauv qab no yog qee hom thiab cov ntsiab lus ntawm cov txheej txheem yas: yas casting (poob molding, coagulation molding, rotational molding), tshuab molding, yas extrusion, yas thermoforming (compression molding, nqus tsev), yas txhaj molding, yas Vuam (kev sib txhuam welding, laser vuam), yas foaming
Post lub sij hawm: May-25-2022