Kusiyana pakati pa PVC yofewa ndi PVC yolimba

PVC ikhoza kugawidwa m'magulu awiri: PVC yolimba ndi PVC yofewa.Dzina la sayansi la PVC ndi polyvinyl chloride, yomwe ndi gawo lalikulu la pulasitiki ndipo amagwiritsidwa ntchito popanga zinthu zapulasitiki.Ndizotsika mtengo komanso zimagwiritsidwa ntchito kwambiri.PVC yolimba imakhala pafupifupi magawo awiri pa atatu a msika, pomwe PVC yofewa imakhala gawo limodzi mwa magawo atatu.Kotero, pali kusiyana kotani pakati pa PVC yofewa ndi PVC yolimba?

1. Madigiri osiyana a kufewa ndi kuuma

Kusiyana kwakukulu kuli mu kuuma kwawo kosiyana. PVC yolimba ilibe zofewa, imasinthasintha bwino, ndi yosavuta kupanga, ndipo sichitha kuphulika, yopanda poizoni komanso yopanda kuipitsa, imakhala ndi nthawi yayitali yosungira, ndipo imakhala ndi chitukuko chachikulu ndi ntchito.PVC yofewa, kumbali ina, imakhala ndi zofewa zofewa zabwino, koma zimakhala zosavuta komanso zovuta kuzisunga, motero kugwiritsa ntchito kwake kumakhala kochepa.

1. Theosiyanasiyana ntchitondi zosiyana

Chifukwa cha kusinthasintha kwake, PVC yofewa nthawi zambiri imagwiritsidwa ntchito pamwamba pa nsalu za tebulo, pansi, kudenga, ndi zikopa;Hard polyvinyl chloride imagwiritsidwa ntchito makamaka pamapaipi olimba a PVC, zopangira, ndi mbiri.

3. Themakhalidwendi zosiyana

Malinga ndi mawonekedwe, PVC yofewa imakhala ndi mizere yabwino yotambasula, imatha kukulitsidwa, ndipo imakhala ndi kukana kwabwino kwa kutentha kwambiri komanso kutsika.Chifukwa chake, itha kugwiritsidwanso ntchito kupanga nsalu zapatebulo zowonekera.Kutentha kwa ntchito ya PVC yolimba nthawi zambiri sikudutsa madigiri 40, ndipo ngati kutentha kuli kokwera kwambiri, zinthu zolimba za PVC zitha kuwonongeka.

4. Thekatundundi zosiyana

Kuchulukana kwa PVC yofewa ndi 1.16-1.35g/cm ³, Kuchuluka kwa madzi mayamwidwe ndi 0.15 ~ 0.75%, galasi kusintha kutentha ndi 75 ~ 105 ℃, ndi akamaumba shrinkage mlingo ndi 10 ~ 50 × 10- ³cm/cm.PVC yolimba nthawi zambiri imakhala ndi mainchesi 40-100mm, makoma osalala amkati osakanizidwa pang'ono, opanda makulitsidwe, opanda poizoni, opanda kuipitsidwa, komanso osachita dzimbiri.Kutentha kogwiritsidwa ntchito sikuposa madigiri 40, choncho ndi chitoliro chamadzi ozizira.Kukana kwabwino kwa ukalamba komanso kuletsa moto.