Nthawi zambiri,polystyrenendi polima wonunkhira wopangidwa kuchokera ku monomer styrene, wopangidwa kuchokera ku benzene ndi ethylene, zonse zopangidwa ndi petroleum.Polystyrene ikhoza kukhala yolimba kapena thovu.Polystyrenendi thermoplastic yopanda mtundu, yowonekera, yomwe nthawi zambiri imagwiritsidwa ntchito popanga thovu kapena kutchinjiriza pamikanda ndi mtundu wa zotchingira zotayirira zomwe zimakhala ndi timikanda tating'ono ta polystyrene.Polystyrene thovumpweya ndi 95-98%.Ma polystyrene thovu ndi oteteza bwino matenthedwe ndipo amagwiritsidwa ntchito nthawi zambiri ngati zotchingira zomangira, monga zotchingira konkriti ndi makina omangira omangira.Zowonjezera (EPS)ndipolystyrene extruded (XPS)onse amapangidwa kuchokera ku polystyrene, koma EPS imapangidwa ndi timikanda tapulasitiki tating'ono tomwe timaphatikizana ndipo XPS imayamba ngati chinthu chosungunuka chomwe chimakanikizidwa kuchokera mumpangidwe kukhala mapepala.XPS imagwiritsidwa ntchito kwambiri ngati kutchinjiriza foam board.
Polystyrene yowonjezera (EPS)ndi cholimba komanso cholimba, thovu lotsekeka.Ntchito zomanga ndi zomangamanga zimakhala pafupifupi magawo awiri pa atatu a kufunikira kwa polystyrene yokulitsidwa.Amagwiritsidwa ntchito potsekera (mphako) makoma, madenga ndi pansi konkire.Chifukwa cha luso lake monga kulemera kochepa, kukhazikika, ndi mawonekedwe,polystyrene yowonjezeraangagwiritsidwe ntchito zosiyanasiyana ntchito, mwachitsanzo trays, mbale ndi mabokosi nsomba.
Ngakhale kuti polystyrene yotambasulidwa komanso yotulutsa ili ndi mawonekedwe otsekeka, amatha kutha ndi mamolekyu amadzi ndipo sangaganizidwe ngati chotchinga cha nthunzi.Mu polystyrene yowonjezera pali mipata pakati pa mapepala otsekedwa otsekedwa omwe amapanga maukonde otseguka apakati pa mapepala omangika.Madzi akaundana kukhala ayezi, amachulukira ndipo amatha kupangitsa kuti ma polystyrene atuluke mu thovulo.
Nthawi yotumiza: Aug-17-2022