M'miyoyo yathu, CPE ndi PVC zimagwiritsidwa ntchito kwambiri. Chlorinated polyethylene ndi polymer yodzaza ndi mawonekedwe oyera a ufa, yopanda poizoni komanso yosakoma, ndipo imakhala ndi kukana bwino nyengo, kukana ozone, kukana mankhwala komanso kukana ukalamba. Imagwirira ntchito bwino, imakhala ndi kukana mafuta, kukana malawi komanso mawonekedwe a utoto. Imalimba bwino (yosinthasinthabe pa -30°C), imagwirizana bwino ndi zinthu zina za polymer, komanso kutentha kwambiri. Chlorinated polyethylene ndi polymer yopangidwa kuchokera ku high-density polyethylene (HDPE) kudzera mu chlorination substitution reaction. Malinga ndi kapangidwe ndi ntchito zosiyanasiyana, chlorinated polyethylene ikhoza kugawidwa m'magulu awiri: resin-type chlorinated polyethylene (CPE) ndi elastomer-type chlorinated polyethylene (CM). Kuwonjezera pa kugwiritsidwa ntchito kokha, thermoplastic resins imathanso kusakanikirana ndi polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS komanso polyurethane (PU). Mu makampani opanga rabala, CPE ingagwiritsidwe ntchito ngati rabala yapadera yapamwamba komanso yapamwamba kwambiri, ndipo ingagwiritsidwenso ntchito ndi rabala ya ethylene-propylene (EPR), rabala ya butyl (IIR), rabala ya nitrile (NBR), polyethylene ya chlorosulfonated (CSM), ndi zina zotero. Mitundu ina ya rabala imagwiritsidwa ntchito.
M'zaka za m'ma 1960, kampani ya ku Germany ya Hoechst inayamba kupanga bwino ndikupanga mafakitale. Dziko langa linayamba kupanga polyethylene yopangidwa ndi chlorine kumapeto kwa zaka za m'ma 1970. "Aqueous Phase Suspension Synthesis of CPE Technology" idapangidwa koyamba bwino ndi Anhui Chemical Industry Research Institute, ndipo zipangizo zopangira 500-1000t/a zokhala ndi masikelo osiyanasiyana zamangidwa ku Wuhu, Anhui, Taicang, Jiangsu, ndi Weifang, Shandong.
Kukana kwa mafuta kwa CPE ndi kwapakati, komwe kukana kwa mafuta a ASTM No. 1 ndi mafuta a ASTM No. 2 ndi kwabwino kwambiri, komwe kuli kofanana ndi NBR; kukana kwa mafuta a ASTM No. 3 ndi kwabwino kwambiri, kuposa CR, komwe kuli kofanana ndi CSM.
CPE ili ndi chlorine, yomwe ili ndi mphamvu zabwino kwambiri zoletsa moto ndipo ili ndi mawonekedwe oyaka komanso oletsa kudontha. Itha kusakanikirana ndi antimony-based flame retardant, chlorinated paraffin, ndi Al(OH)3 mu chiŵerengero choyenera kuti ipeze chinthu choletsa moto chomwe chili ndi mphamvu zabwino kwambiri zoletsa moto komanso mtengo wotsika.
CPE si poizoni, ilibe zitsulo zolemera ndi PAHS, ndipo imakwaniritsa zofunikira zonse zoteteza chilengedwe.
CPE imakhala ndi mphamvu zambiri zodzaza ndipo imatha kupangidwa kukhala zinthu zomwe zimakwaniritsa zofunikira zosiyanasiyana. CPE imatha kukonzedwa bwino, kukhuthala kwa Mooney (ML121 1+4) kuli pakati pa 50-100, ndipo pali mitundu yambiri yosankha.
Nthawi yotumizira: Juni-13-2023
