SanHe Great Wall Import And Export Trade Co, Ltd.

Phihlelo ea Lilemo tse 8 tsa Tlhahiso

Polyvinyl Chloride (PVC) ke eng, hona e sebelisetsoa eng?

Polyvinyl Chloride (PVC) ke e 'ngoe ea li-polymer tse sebelisoang haholo lefatšeng (haufi le li-plastiki tse' maloa tse sebelisoang haholo joaloka PET le PP). Ke polasetiki ea tlhaho e tšoeu ebile e brittle haholo (pele ho litlatsetso tsa li-plasticizers) polasetiki. PVC e bile teng nako e telele ho feta li-plastiki tse ngata tse qalileng ho etsoa ka 1872 le ho hlahisoa khoebong ke BF Goodrich Company lilemong tsa bo-1920. Ha ho bapisoa, li-plastiki tse ling tse ngata tse tloaelehileng li ile tsa qalelisoa 'me tsa qala ho rekisoa feela lilemong tsa bo-1940 le bo-1950. E sebelisoa hangata indastering ea kaho empa e boetse e sebelisetsoa matšoao, lits'ebetso tsa tlhokomelo ea bophelo bo botle hape e le faeba ea liaparo.

PVC e hlahisoa ka mefuta e 'meli e akaretsang, ea pele e le polima e thata kapa e sa ralikang (RPVC kapa uPVC),' me ea bobeli e le polasetiki e tenyetsehang. PVC e tenyetsehang, e entsoe ka polasetiki kapa e tloaelehileng e bonolo ebile e khona ho khumama ho feta uPVC ka lebaka la ho eketsoa ha li-plasticizers tse kang phthalates (mohlala, diisononyl phthalate kapa DINP). Flexible PVC e sebelisoa khafetsa moahong e le ho koala likhoele tsa motlakase kapa ho beha matlo malapeng, lipetlele, likolo le libakeng tse ling moo tikoloho e nyopa e leng ntho ea mantlha, 'me maemong a mang e le sebaka sa rabara.

PVC e thata e boetse e sebelisoa mohahong e le phala bakeng sa lipeipi tsa metsi le bakeng sa ho siding eo hangata e bitsoang "vinyl" United States. Pipe ea PVC hangata e bitsoa "kemiso" ea eona (mohlala, Lenaneo la 40 kapa Shejulu 80). Liphapang tse kholo lipakeng tsa linako li kenyelletsa lintho tse kang botenya ba lebota, khatello ea khatello le 'mala.
Tse ling tsa litšobotsi tsa bohlokoahali tsa polasetiki tsa PVC li kenyelletsa theko ea eona e batlang e le tlase, ho hanela tšenyo ea tikoloho (hammoho le lik'hemik'hale le alkalies), thatafalo e phahameng, le matla a ikhethang a tensile bakeng sa polasetiki tabeng ea PVC e thata. E a fumaneha hohle, e sebelisoa hangata ebile e ka sebelisoa bocha habonolo (e arotsoe ka khoutu ea boits'oaro ea resin "3").


Nako ea poso: Feb-02-2021