PP, sidoo kale loo yaqaan polypropylene, waa polymer ka samaysan polypropylene oo lagu daray falcelinta alkene, waa walxo cad oo waxy ah, muuqaal ahaan hufan oo iftiin leh.Qaabka kiimikada waa (C3H6) x, cufnaanta waa 0.89-0.91g/cm3, ololaysa, barta dhalaalka 165 ℃, jilicsan at 155 ℃, isticmaalka kala duwan heerkulka waa -30～140℃.Under 80 ℃ iska caabin karaa daxalka ee acid, alkali, dareeraha milix ah iyo noocyo kala duwan oo dareere organic, waa la dumin karaa hoos saamaynta heerkulka sare iyo oksidation.Barbaradu waxay ka samaysan yihiin polypropylene, taas oo aan dabacsanayn, adkaysi u lahayn oo ka nacayb yar marka loo eego pbt, sidaas darteed waxaa loo isticmaalaa burushyada nadiifinta dhamaadka hoose.

Inkastoo pp bristles ay aad u jaban yihiin, waxaa loo isticmaali karaa in la furo looxyada wareegga, waayo?Sababtoo ah pp laftiisa waxaa lagu dallacay koronto, haddii lagu daro toner tayo sare leh, waxay noqon doontaa gacan wanaagsan oo laga furo hadda.