Zifukwa zotani zosinthira mtundu wa PVC thovu owongolera

Zopangira thovu za PVC zimakhala zoyera, koma nthawi zina zimasanduka zachikasu zikasungidwa kwa nthawi yayitali. Chifukwa chiyani? Choyamba, muyenera kudziwa ngati pali vuto ndi wosankhidwa thovu wosankhidwa. PVC foaming regulator amagwiritsa ntchito thovu kuti awole ndikutulutsa mpweya womwe umayambitsa pores. Pamene kutentha kwa processing kungafikire kutentha kwa mpweya wotulutsa thovu, mwachibadwa sichidzatulutsa thovu. Mitundu yosiyanasiyana ya opangira thovu imakhala ndi kutentha kosiyanasiyana, ngakhale mtundu womwewo wa wotulutsa thovu umapangidwa ndi opanga osiyanasiyana, kutentha kwanyengo sikungakhale kofanana ndendende. Sankhani PVC foaming regulator yomwe ili yoyenera kwa inu. Sikuti PVC onse ndi oyenera thovu, choncho m'pofunika kusankha zipangizo ndi otsika polymerization digiri processing.

Zopangira thovu za PVC zimakhala zoyera, koma nthawi zina zimasanduka zachikasu zikasungidwa kwa nthawi yayitali. Chifukwa chiyani?

Choyamba, muyenera kudziwa ngati pali vuto ndi wosankhidwa thovu wosankhidwa. PVC foaming regulator amagwiritsa ntchito thovu kuti awole ndikutulutsa mpweya womwe umayambitsa pores. Pamene kutentha kwa processing kungafikire kutentha kwa mpweya wotulutsa thovu, mwachibadwa sichidzatulutsa thovu. Mitundu yosiyanasiyana ya opangira thovu imakhala ndi kutentha kosiyanasiyana, ngakhale mtundu womwewo wa wotulutsa thovu umapangidwa ndi opanga osiyanasiyana, kutentha kwanyengo sikungakhale kofanana ndendende. Sankhani PVC foaming regulator yomwe ili yoyenera kwa inu. Sikuti PVC onse ndi oyenera thovu, choncho m'pofunika kusankha zipangizo ndi digiri otsika polymerization. Zinthu zotere zimakhala ndi kutentha kocheperako, monga S700. Ngati mukufuna kugwiritsa ntchito 1000 ndi 700, zitha kukhala zosiyana. Chotulutsa thovu chikhoza kuwola kale ndipo PVC sinasungunuke.

Komanso, pali zina zowonjezera. Kutentha kwapang'onopang'ono kwa chinthu chotulutsa thovu ndipamwamba kuposa kutentha kwa PVC. Ngati zoonjezera zoyenera sizikuwonjezedwa, zotsatira zake ndikuti PVC imawola (imasanduka yachikasu kapena yakuda) ndipo ACR sinavundebe (thovu). Choncho, m'pofunika kuwonjezera zolimbitsa thupi kuti PVC ikhale yokhazikika (sikuwola pa kutentha kwa AC). Kumbali inayi, zowonjezera zomwe zimalimbikitsa kuchita thovu la AC zimawonjezeredwa kuti muchepetse kutentha kwa AC ndikufananiza. Palinso zowonjezera kuti thovu pores ang'onoang'ono ndi wandiweyani, amene ndi kupewa mosalekeza lalikulu thovu pores ndi kuchepetsa mphamvu ya mankhwala. Popeza kutentha kumakhala kotsika ndipo sikumasinthanso chikasu, ndikhoza kutsimikizira kuti kutentha kwanu kwaposachedwa kunachititsa kuti PVC iwonongeke ndikusanduka chikasu. Kuwola kwa PVC ndi njira yodzilimbikitsa yokha, kutanthauza kuti zinthu zowolazo zimalimbikitsa kuwonongeka kwina. Choncho, nthawi zambiri zimawoneka kuti zili bwino ngati kutentha sikuli kokwera, koma ngati kutentha kuli kochepa pang'ono, kumawola mochuluka.