Zogulitsa za PVC zimagwiritsidwa ntchito kwambiri pamoyo watsiku ndi tsiku, koma zimatha kukhala ndi zovuta pakagwiritsidwe ntchito.Masiku ano, wopangaSainuo phula la polyethylenezidzakutengerani kuti muphunzire za vuto loyera la zinthu za PVC.

Zinthu za PVC zikakumana ndi kutentha panja, chifukwa cha chinyezi, mpweya woipa, sulfure dioxide, ndi kuwala kwa mlengalenga, zimawonetsa kuyera, makamaka chifukwa cha zifukwa zitatu izi:
1. Kuyera pambuyo pa kumizidwa m'madzi
Mitundu yambiri yazinthu zowonekera za PVC zimawonetsa mawonekedwe oyera akamakumana ndi madzi kapena nthunzi kwa nthawi yayitali.Zofewa zimakhala zamphamvu kuposa zolimba.Chifukwa cha kumizidwa kwa madzi, plasticizers, stabilizers, etc. precipitate kuchokera PVC ndi kukumana hydration, kupanga hydrated precipitates padziko (zokhudza transparency).Ngakhale madzi oviikidwa atapita, mapulasitiki ndi okhazikika sangathe kubwezeretsedwa ku chikhalidwe chawo choyambirira.Pokhapokha pakuwonjezera kutentha komwe kumagwirizana pakati pa plasticizers ndi stabilizers kungabwezeretsedwe zisanawonekere.
2. Kuyera pambuyo padzuwa
Zogulitsa za PVC zomwe zimayang'aniridwa ndi dzuwa panja zimathanso kuwonetsa kuyera chifukwa cha chinyezi, mpweya woipa, sulfure dioxide, ndi kuwala mumlengalenga.Izi zikugwirizana ndi kugwirizanitsa kwa stabilizers.Mu sopo zachitsulo, ma benzoates ogwirizana bwino ndi PVC amawonetsa kuyera pang'ono kuposa stearates.Tini wachilengedwe siwophweka kuyera, ndipo sulfure yokhala ndi organic malata ndiyo yabwino kwambiri, yotsatiridwa ndi mchere wa lauric acid ndi mchere wa maleate.Kuonjezera zotsitsimutsa kuwala, phosphite esters, madzi gulu stabilizers, etc. kungathe kuletsa kapena kuchepetsa whitening chodabwitsa cha PVC chifukwa cha kukhudzana ndi kuwala kwa dzuwa.

Zopangira zolimba za PVC zimasanduka zoyera pambuyo powonekera ku Florida kapena malo ena achinyezi, koma sizikhala zoyera zikawululidwa ku Arizona.Chifukwa chake, chinyezi ndi chikhalidwe chomwe chimalimbikitsa kuyera kwa PVC poyang'aniridwa ndi dzuwa.
3. Kupsinjika maganizo kuyera
Kuyera kupsinjika kumatanthawuza zochitika za kuyera m'madera akumidzi a zinthu za PVC, monga kupindika, ma creases, ndi malo otambasula, mothandizidwa ndi mphamvu zakunja zamakina.
Izi zitha kukhala chifukwa cha kusintha kwa mamolekyu omwe amachititsidwa ndi mphamvu yakunja, kutengera kwa polymer molecular chain, kusintha kwa kachulukidwe ka PVC, komanso mawonekedwe a voids pakati pa mamolekyu ena kuti apange kubalalika kowala, zomwe zimapangitsa kuti zinthu za PVC ziziwoneka zoyera.

4. Kuyera kwina
Pakukonza zinthu zowonekera za PVC, ngati mafuta ochulukirapo agwiritsidwa ntchito, mafuta ochulukirapo amathanso kupangitsa kuti zinthu zowonekera zitulutse turbidity yoyera, yomwe nthawi zina imatchedwa kuyera.
Kuyera kumeneku nthawi zambiri kumabweretsa phula lodziwikiratu ngati zinthu zomwe zili pamwamba pa chinthucho.Njira yothetsera vutoli ndikuchepetsa kuchuluka kwa mafuta omwe amagwiritsidwa ntchito kapena kusinthana ndi mafuta ogwirizana bwino, kuti mukwaniritse bwino pakati pamafuta amkati ndi akunja a chilinganizo.
Kuti mudziwe zambiri, chonde tiuzeni!
Qingdao Sainuo Gulu.Ndife opanga sera PE, PP sera, OPE sera, Eva sera, PEMA, EBS, Zinc / Calcium Stearate….Zogulitsa zathu zadutsa REACH, ROHS, PAHS, FDA kuyesa.
Sainuo khalani otsimikiza sera, landirani kufunsa kwanu!
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