Mapangidwe a PVC amachokera ku kuphatikiza kwa PVC polima RESIN ndi zowonjezera zomwe zimapereka mawonekedwe ofunikira kuti agwiritse ntchito kumapeto (Mapaipi kapena Ma Profiles Olimba kapena Flexible Profiles kapena Sheets). Chigawocho chimapangidwa mwa kusakaniza mozama zosakaniza, zomwe pambuyo pake zimasinthidwa kukhala nkhani ya "gelled" mothandizidwa ndi kutentha ndi kukameta ubweya. Malingana ndi mtundu wa PVC ndi zowonjezera, pawiri isanafike gelation ikhoza kukhala ufa wopanda pake (wotchedwa kusakaniza kouma) kapena madzi mu mawonekedwe a phala kapena yankho.
Mankhwala a PVC akapangidwa, pogwiritsa ntchito mapulasitiki, kukhala zinthu zosinthika, zomwe nthawi zambiri zimatchedwa PVC-P.
Ma PVC Compounds akapangidwa popanda plasticizer kuti agwiritse ntchito mokhazikika amasankhidwa PVC-U.
Kuphatikizika kwa PVC kumatha kufotokozedwa mwachidule motere:
Ufa wosasunthika wa PVC wowuma (wotchedwa Resin), womwe ulinso ndi zinthu zina monga zokhazikika, zowonjezera, zodzaza, zolimbitsa thupi, ndi zoletsa moto, ziyenera kusakanizidwa mwamphamvu pamakina ophatikiza. Kusakaniza kwa dispersive ndi kugawa ndikofunikira, ndipo zonse zikugwirizana ndi malire omveka bwino a kutentha.
Malinga ndi kapangidwe kake, utomoni wa PVC, plasticizer, Filler, stabilizer ndi zina zothandizira zimayikidwa mukusakaniza kosakaniza kotentha. Pambuyo pa mphindi 6-10, tsitsani mu chosakaniza chozizira (6-10 min) kuti muyambe kusakaniza. PVC pawiri ayenera kugwiritsa ntchito chosakanizira ozizira kuteteza zinthu kumamatirana pambuyo chosakaniza otentha.
Zinthu zosakaniza pambuyo popanga pulasitiki, kusakaniza ndi kumwazikana mofanana pafupi ndi 155 ° C-165 ° C ndiye amadyetsedwa ku Cold osakaniza. Kusakaniza kwa PVC kosungunuka kumapangidwanso. Pambuyo pa pelletizing, kutentha kwa granules kumatha kutsika mpaka 35 ° C-40 ° C. Kenako sieve yogwedezeka yoziziritsidwa ndi mphepo, kutentha kwa tinthu ting'onoting'ono kumatsika pansi pa kutentha kwa chipinda kuti kutumizidwe ku silo yomaliza yopangira ma CD.
Nthawi yotumiza: Nov-11-2022