1. Cov khoom sib txawv
PP hnabyog polypropylene resins.Vim tias homopolymer PP yog nkig heev thaum qhov kub siab tshaj 0C, ntau cov khoom lag luam PP yog random copolymer nrog 1 ~ 4% ethylene ntxiv lossis clamps nrog cov ntsiab lus ethylene siab dua.formula copolymer.
Ib lub PC hauv lub thawv rau PC yog aka "polycarbonate".Polycarbonate yog cov thermoplastic tawv tawv uas tau txais nws lub npe los ntawm CO3 pawg hauv nws.Los ntawm bisphenol A thiab carbon oxychloride synthesis.Txoj kev siv ntau tshaj plaws yog cov yaj transesterification txoj kev (bisphenol A thiab diphenyl carbonate yog synthesized los ntawm transesterification thiab polycondensation).
2. Cov yam ntxwv sib txawv
PP hnab: Cov khoom siv copolymer-hom PP muaj qis thermal distortion kub (100C), tsis tshua muaj pob tshab, tsis tshua muaj gloss, tsis tshua muaj rigidity, tab sis muaj zog cuam tshuam lub zog.Lub zog ntawm PP nce nrog nce cov ntsiab lus ethylene.Vicat softening kub ntawm PP yog 150C.Vim muaj cov qib siab ntawm crystallinity, cov khoom siv no muaj qhov tawv tawv zoo thiab khawb tsis kam.
PC hnab: Nws yog ib qho amorphous thermoplastic resin nrog cov khoom zoo heev, nrog cov hluav taws xob zoo heev, elongation, qhov ruaj khov thiab cov tshuaj tiv thaiv, siab zog, kub tsis kam thiab txias tsis kam;kuj muaj Self-extinguishing, nplaim retardant, non-toxic, colorable, thiab lwm yam.
3. Lub zog sib txawv
PP hnab ev khoom: muaj zog cuam tshuam lub zog.Qhov tawv tawv thiab khawb tsis kam ntawm cov khoom siv no zoo heev.
PC suitcase: Nws lub zog muaj peev xwm ua tau raws li ntau yam kev xav tau los ntawm cov xov tooj ntawm tes mus rau iav mos txwv.Piv nrog rau cov hlau, nws cov hardness yog tsis txaus, uas ua rau nws zoo nkaus li yooj yim mus khawb, tab sis nws lub zog thiab toughness yog zoo heev, txawm tias nws yog hnyav hnyav los yog dav, tsuav yog koj tsis tau sim pob zeb, nws yog ntev txaus.