PVC compound ndi chiyani?

Ma PVC compounds amachokera ku kuphatikiza kwa PVC polymer RESIN ndi zowonjezera zomwe zimapangitsa kuti pakhale njira yofunikira yogwiritsira ntchito (Mapaipi kapena Ma Rigid Profiles kapena Ma Flexible Profiles kapena Mapepala). Phalalo limapangidwa mwa kusakaniza pamodzi zosakaniza, zomwe pambuyo pake zimasinthidwa kukhala chinthu "chokhala ndi gel" mothandizidwa ndi kutentha ndi mphamvu yodula. Kutengera mtundu wa PVC ndi zowonjezera, phalalo lisanalowetsedwe likhoza kukhala ufa womasuka (wodziwika kuti wouma) kapena madzi mu mawonekedwe a phala kapena yankho.

Ma PVC akapangidwa, pogwiritsa ntchito mapulasitiki, amakhala zinthu zosinthasintha, zomwe nthawi zambiri zimatchedwa PVC-P.

Ma PVC compounds akapangidwa popanda pulasitiki kuti agwiritsidwe ntchito molimba amatchedwa PVC-U.

Kuyika PVC padenga kungaphatikizidwe motere:

Ufa wolimba wa PVC wouma (wotchedwa Resin), womwe ulinso ndi zinthu zina monga zokhazikika, zowonjezera, zodzaza, zolimbitsa, ndi zoletsa moto, ziyenera kusakanikirana kwambiri mumakina ophatikiza. Kusakaniza kogawa ndi kugawa ndikofunikira kwambiri, ndipo zonsezi zikugwirizana ndi malire a kutentha omwe afotokozedwa bwino.

Malinga ndi kapangidwe kake, utomoni wa PVC, pulasitiki, Filler, stabilizer ndi zina zothandizira zimayikidwa mu chosakaniza chotentha. Pambuyo pa mphindi 6-10, zitulutseni mu chosakaniza chozizira (mphindi 6-10) kuti zisakanikizidwe kale. PVC iyenera kugwiritsa ntchito chosakaniza chozizira kuti zinthu zisamamatire pamodzi pambuyo pa chosakaniza chotentha.

Zinthu zosakaniza zikapangidwa ndi pulasitiki, kusakaniza ndi kufalikira mofanana pa kutentha kwa pafupifupi 155°C-165°C, zimayikidwa mu chisakanizo cha Cold. Kenako PVC yosungunuka imapangidwa ndi pellet. Pambuyo popangidwa ndi pellet, kutentha kwa granules kumatha kuchepetsedwa kufika pa 35°C-40°C. Kenako sefa yogwedezeka yoziziritsidwa ndi mphepo, kutentha kwa tinthu tating'onoting'ono kumatsika pansi pa kutentha kwa chipinda kuti kutumizidwe ku silo yomaliza ya chinthu kuti ikapakidwe.