Ziziphi iilahleko eziya kubangelwa yi-CPE ye-polyethylene ecocekileyo ekumgangatho ophantsi kwi-PVC processing?

I-Chlorinated polyethylene (CPE) yimveliso yokuguqulwa kweklorini ye-polyethylene ephezulu (i-HDPE), esetyenziswe njenge-process modifier ye-PVC, Umxholo we-chlorine we-CPE kufuneka ube phakathi kwe-35-38%. Ngenxa yokumelana nemozulu encomekayo, ukumelana nokubanda, ukumelana nedangatye, ukuxhathisa kweoyile, ukunganyangeki kwempembelelo (CPE yi-elastomer), kunye nokuzinza kweekhemikhali.
I-Chlorinated polyethylene (CPE) yimveliso yokuguqulwa kweklorini ye-polyethylene ephezulu (i-HDPE), esetyenziswe njenge-process modifier ye-PVC, Umxholo we-chlorine we-CPE kufuneka ube phakathi kwe-35-38%. Ngenxa yokumelana nemozulu ebalaseleyo, ukumelana nokubanda, ukumelana nedangatye, ukuxhathisa kweoyile, ukunganyangeki kwefuthe (CPE yi-elastomer), kunye nokuzinza kweekhemikhali, kunye nokuhambelana kwayo okuhle nePVC, iCPE iye yaba yeyona nto isetyenziswa kakhulu kwimpembelelo ye-toughening modifier kwiPVC. ukuqhubekeka.
1 Uqwalaselo lweMolekyuli yeHDPE
Ngenxa yeemeko ezahlukeneyo zenkqubo ngexesha lokuphendula kwe-polymerization ye-PE, kukho ukungafani okuthile kwi-molecular configuration kunye neempawu zepolymer HDPE yayo. Iimpawu ze-CPE emva kwe-chlorination ye-HDPE eneempawu ezahlukeneyo nazo ziyahluka. Abavelisi be-CPE kufuneka bakhethe ii-resin ze-HDPE ezikhethekileyo zomgubo ukwenzela ukuvelisa ii-resin ze-CPE ezifanelekileyo.
2. Iimeko ze-chlorine, okt inkqubo ye-chlorination
I-CPE, njenge-PVC processing modifier, idla ngokusekwa yi-chlorination reaction isebenzisa indlela yokumiswa kwekhlorination enamanzi. Iimeko eziphambili zale nkqubo ye-chlorination ngamandla okukhanya, i-initiator dosage, uxinzelelo lokuphendula, ubushushu bokuphendula, ixesha lokuphendula, kunye neemeko zokuphendula ngokungathathi hlangothi. Umgaqo we-PE chlorination ulula, kodwa indlela ye-chlorination inzima kakhulu.
Ngenxa yotyalo-mali oluncinane ngokwentelekiso kwizixhobo zokuvelisa i-CPE, izityalo ezininzi ze-CPE ezincinci zemveliso sele zithe saa kulo lonke elase-China. Oku akubanga nje ukungcoliseka kwendalo, kodwa sesinye sezizathu ezibalulekileyo zokungazinzi komgangatho weCPE.
Okwangoku, kukho inani elikhulu le-CPE ekumgangatho ophantsi kwimarike. Ngokubanzi, kukho iindidi ezimbini zeCPE ekumgangatho ophantsi. Enye ingenxa yezinye izityalo zemveliso ezingenazo iimeko zobugcisa kunye neenkqubo zeklorini eziphelelwe lixesha. Enye indlela kukuxuba inani elithile le-calcium carbonate okanye i-talc powder kwi-CPE ukubandakanya ukhuphiswano olungalunganga.