Kusiyana pakati pa PVC yofewa ndi PVC yolimba

PVC ingagawidwe m'magulu awiri: PVC yolimba ndi PVC yofewa. Dzina la sayansi la PVC ndi polyvinyl chloride, yomwe ndi gawo lalikulu la pulasitiki ndipo imagwiritsidwa ntchito kwambiri popanga zinthu zapulasitiki. Ndi yotsika mtengo komanso imagwiritsidwa ntchito kwambiri. PVC yolimba imayimira pafupifupi magawo awiri mwa atatu a msika, pomwe PVC yofewa imayimira gawo limodzi mwa magawo atatu. Ndiye, kodi kusiyana pakati pa PVC yofewa ndi PVC yolimba ndi kotani?

1. Madigiri osiyanasiyana a kufewa ndi kuuma

Kusiyana kwakukulu kuli mu kuuma kwawo kosiyana. PVC yolimba ilibe zofewetsa, imakhala yosinthasintha bwino, ndi yosavuta kupanga, siimatha kusweka mosavuta, siimayambitsa poizoni komanso kuipitsa, imakhala ndi nthawi yayitali yosungira, ndipo imapanga bwino komanso imagwiritsidwa ntchito bwino. PVC yofewa, kumbali ina, imakhala ndi zofewetsa zomwe zimakhala zofewa bwino, koma zimakhala zosavuta kusweka komanso zimakhala zovuta kusunga, motero kugwiritsa ntchito kwake kumakhala kochepa.

1. Themitundu ya ntchitondi osiyana

Chifukwa cha kusinthasintha kwake bwino, PVC yofewa nthawi zambiri imagwiritsidwa ntchito pamwamba pa nsalu za patebulo, pansi, padenga, ndi pachikopa; Polyvinyl chloride yolimba imagwiritsidwa ntchito kwambiri m'mapaipi olimba a PVC, zolumikizira, ndi ma profiles.

3. Themakhalidwendi osiyana

Malinga ndi mawonekedwe ake, PVC yofewa ili ndi mizere yotambasula bwino, imatha kutambasulidwa, ndipo imatha kupirira kutentha kwambiri komanso kotsika. Chifukwa chake, ingagwiritsidwenso ntchito kupanga nsalu zowonekera bwino patebulo. Kutentha komwe PVC yolimba imagwiritsidwa ntchito nthawi zambiri sikupitirira madigiri 40, ndipo ngati kutentha kuli kokwera kwambiri, zinthu zolimba za PVC zitha kuwonongeka.

4. Thekatundundi osiyana

Kuchuluka kwa PVC yofewa ndi 1.16-1.35g/cm³, Chiŵerengero cha kuyamwa kwa madzi ndi 0.15~0.75%, kutentha kwa kusintha kwa galasi ndi 75~105 ℃, ndipo chiŵerengero cha kuchepa kwa kupanga ndi 10~50 × 10-³cm/cm. PVC yolimba nthawi zambiri imakhala ndi mainchesi a 40-100mm, makoma osalala amkati okhala ndi kukana kochepa, opanda kukula, osawononga, osaipitsa, komanso osawononga dzimbiri. Kutentha kogwiritsidwa ntchito sikoposa madigiri 40, kotero ndi chitoliro cha madzi ozizira. Cholimba bwino pakukalamba komanso choletsa moto.