nkhani imodzi

Ndi chiyaniUses ndi Katundu waPolystyreneMirror Mapepala

Polystyrene (PS) ndi polima yopangidwa kuchokera ku styrene monomer, yomwe ndi yomveka bwino, ya amorphous, nonpolar commodity thermoplastic yomwe ndi yosavuta kuyikonza ndipo imatha kusinthidwa kukhala zinthu zambiri zomwe zatha ngati thovu, mafilimu, ndi mapepala. .Ndi imodzi mwazinthu zazikulu kwambiri zamapulasitiki, zomwe zimakhala pafupifupi 7 peresenti ya msika wonse wa thermoplastic.

PS ndi insulator yabwino kwambiri yamagetsi, imakhala ndi kuwala kwabwino kwambiri chifukwa cha kusowa kwa crystallinity, ndipo imakhala ndi mphamvu yolimbana ndi ma asidi osungunuka ndi maziko.Komabe, polystyrene ili ndi malire angapo.Imawukiridwa ndi zosungunulira za hydrocarbon, imakhala ndi mpweya wocheperako komanso kukana kwa UV, ndipo imakhala yolimba, mwachitsanzo, imakhala ndi mphamvu zopanda mphamvu chifukwa cha kuuma kwa msana wa polima.Kuphatikiza apo, kutentha kwake kwapamwamba komwe kumagwiritsidwa ntchito mosalekeza kumakhala kotsika chifukwa chosowa crystallinity komanso kutentha kwake kwa galasi lotsika pafupifupi 100 ° C.Pansi pa Tg yake, ili ndi mphamvu yapakatikati mpaka yapamwamba (35 - 55 MPa) koma mphamvu yochepa (15 - 20 J / m).Ngakhale zofooka zonsezi, ma polima a styrene ndi mapulasitiki okongola kwambiri azinthu zazikulu.

Pepala la polystyrene nthawi zambiri limakhala locheperako komanso lolimba kwambiri kuposa pepala la acrylic koma nthawi zambiri limakhala lotsika kwambiri kuposa mapulasitiki ena.Ili ndi kuwonekera kwambiri (wachiwiri kwa ma sheet a acrylic mu transmittance light), kukana kwake, kukana kwanyengo komanso kukana kukalamba ndikoyipa kwambiri kuposa plexiglass, zida zamakina ndi matenthedwe opangira mafuta sizili bwino ngati plexiglass, kuuma kwake kumafanana ndi plexiglass acrylic, madzi. mayamwidwe ndi matenthedwe kukulitsa coefficient ndi zochepa kuposa plexiglass akiliriki, koma mtengo wake ndi wotsika kuposa plexiglass akiliriki.

Polystyrene ndiye chinthu chomwe chingasankhidwe pamapulogalamu ambiri kuphatikiza kuyika chakudya, zinthu zapulasitiki zotayidwa komanso magawo amagetsi, zamagetsi / zamagetsi, ndi zamankhwala.