Kuchokera pamalingaliro amalingaliro:
PC (Polycarbonate): Iyi ndi pulasitiki yopanda utoto, yowonekera bwino komanso yokongola komanso yosalala. Chifukwa cha kapangidwe kake kosakhala ndi poizoni komanso fungo loipa, komanso mphamvu zake zabwino zotchingira UV komanso kusunga chinyezi, PC ili ndi kutentha kwakukulu. Siisweka pa -180°C ndipo ingagwiritsidwe ntchito kwa nthawi yayitali pa 130°C, zomwe zimapangitsa kuti ikhale chinthu chabwino kwambiri chopangira chakudya.
PET (Polyethylene Terephthalate) : Ichi ndi chinthu chooneka ngati galasi, chopanda mtundu, komanso chowonekera bwino chomwe ndi cholimba kwambiri. Chimawoneka ngati galasi, chopanda fungo, chopanda kukoma, komanso chopanda poizoni. Chimayaka moto, chimapanga lawi lachikasu lokhala ndi m'mphepete mwa buluu chikayaka, ndipo chili ndi mphamvu zabwino zotchingira mpweya.
Kuchokera pamalingaliro a makhalidwe ndi ntchito:
PC: Ili ndi mphamvu yabwino kwambiri yolimbana ndi kugwedezeka ndipo ndi yosavuta kuumba, zomwe zimapangitsa kuti ipangidwe m'mabotolo, mitsuko, ndi mitundu yosiyanasiyana ya ziwiya zosungiramo zakumwa monga zakumwa, mowa, ndi mkaka. Vuto lalikulu la PC ndilakuti imatha kusweka chifukwa cha kupsinjika. Pofuna kuchepetsa izi popanga, zinthu zopangira zoyera kwambiri zimasankhidwa, ndipo mikhalidwe yosiyanasiyana yokonza imawongoleredwa mosamala. Kuphatikiza apo, kugwiritsa ntchito ma resin okhala ndi kupsinjika pang'ono kwamkati, monga kuchuluka pang'ono kwa polyolefins, nayiloni, kapena polyester posakaniza kusungunuka, kungathandize kwambiri kukana kusweka chifukwa cha kupsinjika komanso kuyamwa madzi.
PET: Ili ndi coefficient yotsika ya kukula komanso kuchuluka kochepa kwa kuumba kwa 0.2% yokha, komwe ndi gawo limodzi mwa magawo khumi a polyolefins ndipo ndi kotsika kuposa PVC ndi nayiloni, zomwe zimapangitsa kuti zinthuzo zikhale zokhazikika. Mphamvu yake yamakina imaonedwa kuti ndi yabwino kwambiri, yokhala ndi mawonekedwe okulira ofanana ndi aluminiyamu. Mphamvu yokoka ya mafilimu ake ndi yowirikiza kasanu ndi kanayi kuposa polyethylene ndi katatu kuposa polycarbonate ndi nayiloni, pomwe mphamvu yake yokhudza ndi yowirikiza katatu mpaka kasanu kuposa mafilimu wamba. Kuphatikiza apo, mafilimu ake ali ndi zotchinga chinyezi komanso mphamvu zosungira fungo. Komabe, ngakhale zili ndi ubwino uwu, mafilimu a polyester ndi okwera mtengo, ovuta kutenthetsa, ndipo amakonda kugwiritsa ntchito magetsi osasinthasintha, ndichifukwa chake sagwiritsidwa ntchito kawirikawiri okha; nthawi zambiri amaphatikizidwa ndi ma resin omwe ali ndi mphamvu yabwino yotsekera kutentha kuti apange mafilimu ophatikizika.
Chifukwa chake, mabotolo a PET opangidwa pogwiritsa ntchito njira yopangira ma biaxial stretching blow molding amatha kugwiritsa ntchito bwino mawonekedwe a PET, kupereka mawonekedwe owonekera bwino, kuwala kwambiri, komanso mawonekedwe ofanana ndi galasi, zomwe zimapangitsa kuti akhale mabotolo apulasitiki oyenera kwambiri m'malo mwa mabotolo agalasi.
Nthawi yotumizira: Novembala-04-2024