Zeziphi iimpawu zePolyvinyl Chloride (PVC)?

Ezinye zezona mpawu zibalulekileyo zePolyvinyl Chloride (PVC) zezi:

1. Ubuninzi:I-PVC ixinene kakhulu xa kuthelekiswa neeplastiki ezininzi (umxhuzulane okhethekileyo malunga ne-1.4)
2. Ezoqoqosho:IPVC ifumaneka lula kwaye itshiphu.
3. Ukuqina:I-PVC eqinile ibeka kakuhle ukuqina kunye nokuqina.
4. Amandla:I-PVC eqinile inamandla abalaseleyo okuqina.

I-Polyvinyl Chloride yinto "ye-thermoplastic" (ngokuchasene ne "thermoset"), ehambelana nendlela iplastiki iphendula ngayo ukushisa. Iimathiriyeli ze-Thermoplastic ziba lulwelo kwindawo yazo yokunyibilika (uluhlu lwePVC phakathi komgangatho ophantsi kakhulu we-100 degrees celcius kunye namaxabiso aphezulu afana nama-260 degrees celsius ngokuxhomekeke kwizongezo). Uphawu olusisiseko oluluncedo malunga ne-thermoplastics kukuba banokufudunyezwa kwindawo yabo yokunyibilika, apholiswe, kwaye baphinde bafudunyezwe ngaphandle kokuthotywa okubalulekileyo. Endaweni yokutshisa, i-thermoplastics efana ne-polypropylene liquefy ivumela ukuba ifakwe inaliti ngokulula kwaye iphinde isetyenziswe kwakhona. Ngokwahlukileyo, iiplastiki ze-thermoset zinokufudunyezwa kube kanye kuphela (ngokuqhelekileyo ngexesha lenkqubo yokubumba inaliti). Ukufudumeza kokuqala kubangela ukuba izinto ze-thermoset zibekwe (ezifana ne-2-part epoxy), okubangelwa utshintsho lweekhemikhali olungenakuguqulwa. Ukuba uzama ukufudumeza iplastiki ye-thermoset kwiqondo lobushushu eliphezulu okwesibini, iya kutshisa kuphela. Olu phawu lwenza imathiriyeli ye-thermoset ibe ngabaviwa abahluphekayo bokuphinda isetyenziswe.

I-PVC ibonelela ngeentlobo ngeentlobo zezicelo kunye neenzuzo kuwo wonke amashishini amaninzi kuzo zombini iifom zayo eziqinileyo neziguquguqukayo. Ngokukodwa, i-Rigid PVC inoxinaniso oluphezulu lweplastiki, iyenza ibe nzima kakhulu kwaye yomelele ngokumangalisayo ngokubanzi. Ikwafumaneka ngokulula kwaye inoqoqosho, ethi, idityaniswe neempawu ezininzi zeplastiki ezihlala ixesha elide, ikwenza kube lula ukukhetha kwizicelo ezininzi zemizi-mveliso ezifana nokwakha.

I-PVC inendalo eyomelele kakhulu kwaye ikhaphukhaphu, iyenza ibe yimathiriyeli enomtsalane kulwakhiwo, imibhobho yamanzi, kunye nezinye izicelo zoshishino. Ukongeza, umxholo wayo ophezulu weklorini wenza ukuba izinto zikwazi ukumelana nomlilo, esinye isizathu sokuba izuze udumo olunje kumashishini ahlukeneyo.