Daim ntawv PP yog cov khoom siv semi-crystalline. Nws nyuaj dua thiab muaj qhov kub siab dua li PE. Vim tias qhov kub ntawm homopolymer PP yog qhov tawg heev saum 0C, ntau cov khoom lag luam PP yog cov copolymers random nrog 1 txog 4% ethylene lossis clamp copolymers nrog cov ntsiab lus ethylene ntau dua.
Daim ntawv PP ntshiab muaj qhov ceev tsawg, yooj yim rau vuam thiab ua, muaj kev tiv thaiv tshuaj lom neeg zoo, tiv thaiv kub thiab tiv thaiv kev cuam tshuam, tsis muaj tshuaj lom thiab tsis muaj saj, thiab tam sim no yog ib qho ntawm cov yas engineering uas zoo rau ib puag ncig. Cov xim tseem ceeb yog dawb, xim microcomputer, thiab lwm yam xim kuj tuaj yeem hloov kho raws li cov neeg siv khoom xav tau. Daim ntawv thov: cov khoom siv tiv thaiv acid thiab alkali, cov chaw tsim khoom ntawv pp.
Polypropylene (PP) extruded daim ntawv yog ib daim ntawv yas ua los ntawm kev ntxiv ntau yam khoom siv rau PP resin los ntawm extrusion, calendering, txias, txiav thiab lwm yam txheej txheem.
Cov ntawv PP uas muaj iav fiber ntau ntxiv (FRPP): Tom qab muaj 20% iav fiber ntxiv rau, nws tseem ua tau zoo heev, thiab nws lub zog thiab kev nruj yog ob npaug piv rau PP, thiab nws tiv taus cua sov zoo thiab tiv taus qhov kub tsawg, tiv taus corrosion arc, thiab shrinkage tsawg. Tshwj xeeb tshaj yog rau cov tshuaj fiber, chlor-alkali, roj av, dyestuff, tshuaj tua kab, khoom noj, tshuaj, kev lag luam teeb pom kev zoo, metallurgy, dej phwj thiab lwm yam teb.
Daim ntawv PPH tau siv zoo hauv kev tsim cov ntawv, thiab cov thev naus laus zis siab heev yog nyob rau hauv txoj haujlwm ua thawj coj hauv Suav teb. Cov khoom no tuaj yeem siv rau cov phaj lim thiab cov thawv kauv, rau cov ntawv yas fiber ntau ntxiv, kev lag luam petrochemical cia, kev thauj mus los thiab tiv thaiv xeb, cov chaw tsim hluav taws xob, kev muab dej, kev kho dej thiab cov dej ntws rau cov chaw tsim dej; thiab cov chaw tsim hlau, cov chaw tsim hluav taws xob tshem tawm plua plav, ntxuav thiab cua tshuab, thiab lwm yam.
Lub sijhawm tshaj tawm: Lub Ob Hlis-20-2023
