Nkhani

Pepala la PP ndi chinthu chopangidwa ndi theka-crystalline. Ndi lolimba ndipo lili ndi malo osungunuka kwambiri kuposa PE. Chifukwa kutentha kwa homopolymer PP kumakhala kofooka kwambiri kuposa 0C, zinthu zambiri zogulitsa za PP ndi ma copolymers osasinthika okhala ndi 1 mpaka 4% ya ethylene kapena ma copolymers okhala ndi ethylene yambiri.

Pepala loyera la PP lili ndi kachulukidwe kochepa, ndi losavuta kulumikiza ndi kukonza, limalimbana ndi mankhwala kwambiri, limalimbana ndi kutentha komanso limalimbana ndi kugwedezeka, silili ndi poizoni komanso silikoma, ndipo pakadali pano ndi limodzi mwa mapulasitiki abwino kwambiri okonza zinthu zachilengedwe. Mitundu yayikulu ndi yoyera, mtundu wa microcomputer, ndipo mitundu ina imatha kusinthidwa malinga ndi zosowa za makasitomala. Ntchito: zida zotsutsana ndi asidi ndi alkali, opanga mapepala a pp.

Pepala lotulutsidwa ndi polypropylene (PP) ndi pepala la pulasitiki lopangidwa powonjezera zowonjezera zosiyanasiyana ku utomoni wa PP kudzera mu extrusion, calendering, kuziziritsa, kudula ndi njira zina.

Chipepala cha PP cholimbikitsidwa ndi ulusi wagalasi (pepala la FRPP): Pambuyo polimbikitsidwa ndi ulusi wagalasi wa 20%, kuwonjezera pa kusunga magwiridwe antchito abwino kwambiri, mphamvu ndi kulimba zimawirikiza kawiri poyerekeza ndi PP, ndipo chimakhala ndi kukana kutentha bwino komanso kukana kutentha pang'ono, kukana dzimbiri, komanso kuchepa pang'ono. Choyenera kwambiri pa ulusi wa mankhwala, chlor-alkali, mafuta, utoto, mankhwala ophera tizilombo, chakudya, mankhwala, makampani opanga magetsi, zitsulo, mankhwala otayira zinyalala ndi zina.

Mapepala a PPH agwiritsidwa ntchito bwino popanga mapepala, ndipo ukadaulo wapamwamba uli patsogolo ku China. Zinthuzi zitha kugwiritsidwa ntchito ngati mbale zosefera ndi zotengera zozungulira, mapepala opindika apulasitiki olimbikitsidwa ndi ulusi wagalasi, malo osungiramo mafuta, mayendedwe ndi machitidwe oletsa dzimbiri, malo opangira magetsi, malo operekera madzi, makina oyeretsera madzi ndi ngalande zamadzi; ndi malo opangira zitsulo, malo opangira magetsi. Kuchotsa fumbi, makina ochapira ndi opumira mpweya, ndi zina zotero.