Yiziphi izici zePolyvinyl Chloride (PVC)?

Ezinye zezinto ezibaluleke kakhulu zePolyvinyl Chloride (PVC) yilezi:

1. Ukuminyana:I-PVC iminyene kakhulu uma iqhathaniswa namapulasitiki amaningi (amandla adonsela phansi athize azungeze i-1.4)
2. Ezomnotho:I-PVC itholakala kalula futhi ishibhile.
3. Ukuqina:I-PVC eqinile ilinganisa kahle ngobulukhuni nokuqina.
4. Amandla:I-PVC eqinile inamandla amakhulu okuqina.

I-Polyvinyl Chloride iyimpahla ye-"thermoplastic" (ngokungafani ne-"thermoset"), ehlobene nendlela ipulasitiki esabela ngayo ekushiseni. Izinto ze-Thermoplastic ziba uketshezi lapho zincibilika (ibanga le-PVC eliphakathi kwezinga eliphansi kakhulu lika-100 degrees Celsius namanani aphezulu afana no-260 degrees Celsius kuye ngezithasiselo). Isibaluli esibalulekile esiwusizo mayelana ne-thermoplastics ukuthi ingashiswa ifike lapho incibilika khona, apholiswe, futhi ifudumale kabusha ngaphandle kokuwohloka okukhulu. Esikhundleni sokushiswa, i-thermoplastics efana ne-polypropylene liquefy ivumela ukuthi ibunjwe kalula umjovo bese igaywa kabusha. Ngokuphambene, amapulasitiki e-thermoset angashiswa kanye kuphela (imvamisa phakathi nenqubo yokubumba umjovo). Ukushisa kokuqala kubangela ukuthi izinto ezisetshenziswayo ze-thermoset zisethwe (ezifana ne-epoxy ezingxenye ezimbili), okuholela ekushintsheni kwamakhemikhali okungenakuhlehliswa. Uma uzama ukushisisa ipulasitiki ye-thermoset ezingeni lokushisa eliphezulu okwesibili, ingasha kuphela. Lesi sici senza okokusebenza kwe-thermoset kube amakhandidethi ampofu wokugaywa kabusha.

I-PVC inikezela ngezinhlelo zokusebenza eziningi ezahlukahlukene kanye nezinzuzo kuzo zonke izimboni eziningi kuzo zombili izinhlobo zayo eziqinile nezivumelana nezimo. Ikakhulukazi, i-Rigid PVC inokuminyana okuphezulu kwepulasitiki, iyenza ibe lukhuni ngokwedlulele futhi iqine ngendlela emangalisayo. Futhi itholakala kalula futhi iyonga, okuthi, kuhlanganiswe nezici eziningi zepulasitiki ezihlala isikhathi eside, ikwenza kube ukukhetha okulula ezinhlelweni eziningi zezimboni ezifana nokwakha.

I-PVC inemvelo ehlala isikhathi eside futhi engasindi, iyenza ibe yinto ekhangayo yokwakha, amapayipi, nezinye izinhlelo zokusebenza zezimboni. Ukwengeza, okuqukethwe kwayo kwe-chlorine ephezulu kwenza okokusebenza kukwazi ukumelana nomlilo, esinye isizathu esenza ukuba kudume kangaka kuzo zonke izimboni.