1. Awọn ohun elo ọtọtọ
PP awọn apotijẹ awọn resini polypropylene.Nitori pe homopolymer PP jẹ brittle pupọ nigbati iwọn otutu ba ga ju 0C, ọpọlọpọ awọn ohun elo PP ti iṣowo jẹ awọn copolymers laileto pẹlu 1 ~ 4% ethylene ti a fi kun tabi clamps pẹlu akoonu ethylene ti o ga julọ.agbekalẹ copolymer.
PC kan ninu apo apamọ PC jẹ aka "polycarbonate".Polycarbonate jẹ resini thermoplastic lile ti o gba orukọ rẹ lati awọn ẹgbẹ CO3 inu rẹ.Nipa bisphenol A ati erogba oxychloride kolaginni.Ọna ti o wọpọ julọ ni ọna transesterification yo (bisphenol A ati diphenyl carbonate ti wa ni iṣelọpọ nipasẹ transesterification ati polycondensation).
2. Awọn abuda oriṣiriṣi
Apoti PP: Ohun elo copolymer-type PP ni iwọn otutu ipalọlọ kekere (100C), akoyawo kekere, didan kekere, rigidity kekere, ṣugbọn o ni agbara ipa ti o lagbara.Agbara PP pọ si pẹlu akoonu ethylene ti o pọ si.Iwọn otutu rirọ Vicat ti PP jẹ 150C.Nitori iwọn giga ti crystallinity, ohun elo yii ni lile dada ti o dara ati awọn ohun-ini resistance ibere.
PC apoti: O jẹ resini thermoplastic amorphous pẹlu awọn ohun-ini okeerẹ ti o dara julọ, pẹlu idabobo itanna ti o dara julọ, elongation, iduroṣinṣin iwọn ati resistance kemikali, agbara giga, resistance ooru ati resistance otutu;tun ni pipa-ara-ẹni, idaduro ina, ti kii ṣe majele, awọ, ati bẹbẹ lọ.
3. Agbara ti o yatọ
PP suitcase: ni okun ikolu agbara.Lile dada ati awọn ohun-ini resistance ibere ti ohun elo yii dara julọ.
Apoti PC: Agbara rẹ le pade ọpọlọpọ awọn iwulo lati awọn foonu alagbeka si gilasi bulletproof.Ti a ṣe afiwe pẹlu irin, lile rẹ ko to, eyiti o jẹ ki irisi rẹ rọrun lati gbin, ṣugbọn agbara ati lile rẹ dara pupọ, boya o jẹ titẹ eru tabi gbogbogbo, niwọn igba ti o ko ba gbiyanju lati rọọkì rẹ, o gun to.