PP, yomwe imadziwikanso kuti polypropylene, ndi polima yopangidwa ndi polypropylene kuphatikiza alkene reaction, ndi zinthu zoyera za waxy, zowonekera komanso zopepuka.The mankhwala chilinganizo ndi (C3H6) x, kachulukidwe ndi 0.89-0.91g/cm3, kuyaka, malo osungunuka 165 ℃, kufewetsa pa 155 ℃, ntchito osiyanasiyana kutentha ndi -30～140℃.Pansi pa 80 ℃ akhoza kukana dzimbiri asidi, zamchere, madzi amchere ndi zosiyanasiyana zosungunulira organic, akhoza decomposed ndi kutentha ndi makutidwe ndi okosijeni.Ma pp bristles amapangidwa ndi polypropylene, yomwe imakhala yosasinthika, yosavala komanso yonyansa kuposa pbt, motero imagwiritsidwa ntchito m'maburashi ambiri otsuka otsika.

Ngakhale ma pp bristles ndi otsika mtengo kwambiri, amatha kugwiritsidwa ntchito kumasula matabwa ozungulira, chifukwa chiyani?Chifukwa pp palokha ndi yamagetsi, ngati ikuphatikizidwa ndi toner yapamwamba kwambiri, idzakhala dzanja labwino kumasula magetsi.