Kodi ndi zinthu ziti zomwe zimatayika chifukwa cha CPE yotsika mtengo ya chlorine polyethylene pokonza PVC?

Chlorinated polyethylene (CPE) ndi chinthu chosinthidwa cha chlorinated polyethylene yapamwamba kwambiri (HDPE). Monga chosinthira cha PVC, kuchuluka kwa chlorine mu CPE kuyenera kukhala pakati pa 35-38%. Chifukwa cha kukana kwake nyengo, kukana kuzizira, kukana malawi, kukana mafuta, kukana kugwedezeka (CPE ndi elastomer), komanso kukhazikika kwa mankhwala.

Chlorinated polyethylene (CPE) ndi chinthu chosinthidwa cha chlorinated polyethylene yapamwamba kwambiri (HDPE). Monga chosinthira cha PVC, kuchuluka kwa chlorine mu CPE kuyenera kukhala pakati pa 35-38%. Chifukwa cha kukana kwake nyengo, kukana kuzizira, kukana malawi, kukana mafuta, kukana kukhudzidwa (CPE ndi elastomer), komanso kukhazikika kwa mankhwala, komanso kugwirizana kwake bwino ndi PVC, CPE yakhala chosinthira cha impact toughening chomwe chimagwiritsidwa ntchito kwambiri pokonza PVC.

1. Kapangidwe ka Molekyulu ya HDPE
Chifukwa cha kusiyana kwa njira zomwe zimachitika panthawi ya polymerization reaction ya PE, pali kusiyana kwina pa kapangidwe ka mamolekyulu ndi mawonekedwe a polymer HDPE yake. Makhalidwe a CPE pambuyo pa chlorination ya HDPE yokhala ndi mawonekedwe osiyanasiyana amasiyananso. Opanga CPE ayenera kusankha ma resin apadera a ufa a HDPE oyenera kuti apange ma resin oyenerera a CPE.

2. Mikhalidwe ya chlorination, mwachitsanzo njira ya chlorination
CPE, monga chosinthira cha PVC processing, nthawi zambiri imapangidwa ndi chlorination reaction pogwiritsa ntchito njira yamadzi yoyimitsira chlorination. Zinthu zofunika kwambiri pa njira iyi ya chlorination ndi mphamvu yowala, mlingo woyambitsa, kuthamanga kwa reaction, kutentha kwa reaction, nthawi yochitira reaction, ndi momwe zinthu zimachitikira. Mfundo ya PE chlorination ndi yosavuta, koma njira ya chlorination ndi yovuta kwambiri.

Chifukwa cha ndalama zochepa zomwe zimagwiritsidwa ntchito popanga zipangizo zopangira CPE, mafakitale ambiri ang'onoang'ono opanga CPE afalikira kale ku China konse. Izi sizimangoyambitsa kuipitsidwa kwa chilengedwe, komanso ndi chimodzi mwa zifukwa zofunika kwambiri zomwe zimapangitsa kuti khalidwe la CPE lisakhazikike.

Pakadali pano, pali mitundu yambiri ya CPE yotsika mtengo pamsika. Kawirikawiri, pali mitundu iwiri ya CPE yotsika mtengo. Choyamba chimachitika chifukwa chakuti mafakitale ena opanga alibe mikhalidwe yaukadaulo komanso njira zakale zochotsera chlorine. Njira ina ndikusakaniza kuchuluka kwa calcium carbonate kapena ufa wa talc mu CPE kuti achite mpikisano wosalungama.