Ponena za mawaya otsika mphamvu ndi zingwe, amagawidwa makamaka m'magulu awiri malinga ndi cholinga chawo: mawaya omanga ndi zida zamagetsi. Muwaya womanga, munali waya wachilengedwe wopangidwa ndi mphira wotchingidwa ndi phula kuyambira m'ma 1960. Kuyambira m'ma 1970, idasinthidwa ndi mawaya apulasitiki a PVC. Mkhalidwe wa mizere ya zida zamagetsi ndi wofanana ndi momwe mizere yomanga, yomwe poyamba inkayendetsedwa ndi mphira wachilengedwe, koma idasinthidwa ndi zingwe za PVC mu 1970s. Izi ndizosagwirizana ndi sayansi komanso zosagwirizana ndi makampani opanga chingwe komanso zosankha za ogwiritsa ntchito. Masiku ano, zingwe zamagetsi osiyanasiyana, makamaka zingwe zolumikizira zomwe zimafunikira kuti zida zapakhomo zomwe zikuchulukirachulukira, zisinthe momwe zinthu zilili poyang'aniridwa ndi pulasitiki ya PVC ndikuyika zingwe za rabara. Chifukwa zingwe za mphira zimakhala ndi ubwino wapadera monga kufewa, kumva bwino kwa manja, kusaopa kutentha, komanso kusungunuka, sizingafanane ndi zingwe zapulasitiki. Chifukwa cha zabwino zambiri zomwe mphira wopangira alibe, CPE imatha kugwiritsidwa ntchito kwambiri popanga zingwe zamagetsi zapakhomo ndi zingwe zina zosinthika za zida zamagetsi. CPE ili ndi zida zambiri zaukadaulo, monga kutsika kwamoto komanso kukana kwamafuta ambiri, mawonekedwe akuthupi ndi makina (mwachitsanzo, makina amakina), kukana kukalamba kwabwino, kukana kwa ozoni, kukana kwanyengo, mphamvu zamagetsi zamagetsi, komanso kukonza bwino. Itha kugwiritsidwa ntchito pazida zonse zopangira mphira, ndipo zida za mphira sizimakonda kupsa. Zipangizo za CPE sizidzawonongeka pakatha zaka zingapo zosungirako, Zida za Rubber zokhala ndi ma vulcanizing agents zitha kusungidwa kwa zaka 1-2 popanda kuwonongeka posungirako bwino.
Mwachidule, kugwiritsa ntchito CPE pamakampani opanga zingwe zapaintaneti, ndiye kuti, m'malo mwa CR ndi CPE, ndizochitika pamakampani opanga zingwe pa intaneti. Izi sizimangochepetsa kusagwirizana kwa CR, kumachepetsa kwambiri mtengo wazinthu zamagetsi, kumapangitsanso phindu lazachuma pamakampani opanga zingwe, komanso kuli ndi tanthauzo lalikulu pakuwongolera kuchuluka kwazinthu zamagetsi ndikukwaniritsa kusiyanasiyana kwamitundu yama chingwe.
Nthawi yotumiza: Nov-06-2023