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

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.