Kedu ihe bụ PVC compound?

Ogige PVC dabere na nchikota nke PVC polymer RESIN na ihe mgbakwunye na-enye usoro dị mkpa maka njedebe njedebe (Pipes or Rigid Profiles or Flexible Profiles or Sheets). A na-emepụta ogige ahụ site na ịgwakọta ihe ndị ahụ na-akpachi anya, bụ nke a na-emesị ghọọ ihe "gelled" n'okpuru mmetụta nke okpomọkụ na ike ịkpụ. Dabere n'ụdị PVC na ihe mgbakwunye, ihe dị n'ihu tupu gelation nwere ike ịbụ ntụ ntụ na-enweghị onwe (nke a maara dị ka ngwakọta akọrọ) ma ọ bụ mmiri mmiri n'ụdị nke mado ma ọ bụ ngwọta.

Ogige PVC mgbe emebere ya, na-eji plasticizers, n'ime ihe ndị na-agbanwe agbanwe, nke a na-akpọkarị PVC-P.

Ngwakọta PVC mgbe emebere ya na-enweghị plasticizer maka ngwa siri ike bụ PVC-U.

Enwere ike ichikota ngwakọta PVC dị ka ndị a:

Ngwakọta ngwakọta akọrọ nke PVC siri ike (nke a na-akpọ Resin), nke nwekwara ihe ndị ọzọ dị ka stabilizers, additives, fillers, reinforcements, and fire retardants, ga-agwakọta nke ọma n'ime igwe na-ejikọta ya. Ngwakọta na-ekesa na nkesa dị oke egwu, yana ihe niile na-akwado oke okpomọkụ akọwapụtara nke ọma.

Dị ka usoro ahụ si dị, a na-etinye resin PVC, plasticizer, Filler, stabilizer na ihe enyemaka ndị ọzọ n'ime mixer mixer. Mgbe nkeji 6-10 gachara, tinye n'ime igwekota oyi (6-10mins) maka premixing. Ngwakọta PVC ga-eji igwe igwe oyi mee ka ihe ghara ịrapara ọnụ mgbe igwekota ọkụ gachara.

Ngwakọta ngwakọta mgbe emechara plastik, ịgwakọta na ịgbasa n'otu oge na gburugburu 155 ° C-165 Celsius ka a na-enye nri na ngwakọta oyi. Mgbe ahụ, a na-ewepụ ihe ngwakọta PVC na-agbaze. Mgbe pelleting gasịrị, enwere ike ịdaba okpomọkụ nke granules na 35 ° C-40 Celsius. Mgbe nke ahụ gasịrị, sieve na-ama jijiji nke ikuku jụrụ oyi, okpomọkụ ahụ na-adaba n'okpuru ọnụ ụlọ ka ezipụ ya na silo ngwaahịa ikpeazụ maka nkwakọ ngwaahịa.