Usoro nke ime ihe nke PVC lubricants na PVC ọkpọkọ

N'oge nhazi nke PVC-U, akụkụ ya ga-enwe mgbanwe dị mkpa.N'ebe okpomọkụ nhazi dị ala, granules na-agbasa n'ime ihe ndị bụ isi n'ihi okpomọkụ na ike ịkwa akwa, nke na-akụda akụkụ dị ka okpomọkụ na-abawanye.Mgbe okpomọkụ nhazi dị elu, enwere ike ịkụpịa ihe ndị bụ isi, kristal na-agbaze, ókè na-apụ n'anya, a na-emepụta netwọk akụkụ abụọ.A na-akpọ usoro a agbaze ma ọ bụ gelation, nke a na-akpọkarị plasticization [1].N'adịghị ka rọba, usoro ihe omimi nke PVC na-anọgide na-agbanweghị agbanwe mgbe emechara plastik, ma ọ bụ na-emepụta usoro njikọ cross, ma a na-emepụta netwọk crystalline na ngwaahịa ahụ dum.N'ime ụlọ okpomọkụ, ihe mgbaze enweghị ike ịbanye n'etiti akụkụ molekụla nke netwọk kristal, na netwọk kristal na-ejikọta akụkụ nke na-abụghị kristal, na-eme ka ngwaahịa ahụ sie ike ịza, na-egosi na ọ dị ntakịrị akụkụ nke nwere ike ịgbaze mgbe etinyere ya na acetone. ma ọ bụ dichloroethane.Ogo nke plasticization bụ ngosipụta nke ogo kristal nke ngwaahịa na ogo nke agbaze nke ihe ndị bụ isi PVC.Mgbe PVC plasticization, mgbanwe nke crystallinity bụ n'ozuzu ọ bụghị ihe karịrị 10%, ma networked crystallization nwere ike budata mma n'ibu Njirimara nke ngwaahịa.Ogo nke plasticization nwere njikọ chiri anya na ịdị arọ molekụla nke resin na mmetụta ịkpacha ajị n'oge nhazi, ya bụ, metụtara nhazi nke akụrụngwa, nhazi okpomọkụ, ịgba ọsọ ọsọ, na nguzogide anwụ [2].
Mgbe agbaze mmanụ dị n'ime, ọ nwere ike ịbanye n'etiti ụdọ molekụla na elu nke ihe ndị dị na PVC, na-ebelata ike mmekọrịta n'etiti ihe ndị bụ isi, ụmụ irighiri ihe na akụkụ intramolecular nke resin PVC, na ịkwalite plasticization nke resin PVC. , nke na-ebelata viscosity na-agbaze ma na-abawanye ụbara mmiri..Usoro ọrụ ya bụ n'ihi na usoro kemịkalụ nke ime mmanu ime nwere otu polar na ndị na-abụghị polar nke otu alkyl ogologo ogologo.Tupu PVC plasticization, polar otu nke esịtidem mmanu nwere ụfọdụ njikọ na polar ọnụ nke PVC resin, na-eme a mgbagwoju na ike njikọ ike, si otú na-ebelata ma ọ bụ na-ewepụ mmasị n'etiti ahụ n'etiti akụkụ nke ọ bụla oyi akwa nke PVC.Akụkụ agbụ nke na-eme ka PVC jikọtara ọnụ dị mfe ịgbasa, ókèala dị n'etiti ìgwè molekụla dị mfe na-apụ n'anya, a na-akwalite plasticization nke resin PVC.Mgbe PVC plasticization gasịrị, otu pola nke mmanụ mmanu na-ebelata mmasị dị n'etiti ụmụ irighiri ihe na agbaze na akụkụ dị na molekul, na-eme ka resin PVC dị mfe na-asọba, na-ebelata viscosity gbazee, wee si otú a na-arụ ọrụ mmanye n'ime.Ke adianade do, ogologo yinye (ihe karịrị 12 carbon atom) alkyl akụkụ nke esịtidem mmanu nwere nnukwu ihe dị iche na ndakọrịta na PVC resin, na ibe ya bụ obere, na PVC ụmụ irighiri ihe na ụmụ irighiri ihe na-ekewa n'etiti ibe. ụzọ "ọta".Mee ka ọ dị mfe mmịfe, wee rụọ ọrụ anụ ahụ naanị dị ka mmanu mmanu.Otú ọ dị, mgbe ngafe mmanu na-emebi polima, molekul
Ọ dị mfe ịfefe na ịtụgharị n'etiti agbụ, mee ka esemokwu dị n'ime ya ghara ịdị, na-egbu oge ịkụpịa na ịgbaze plasticization nke ihe ndị dị na PVC.
N'ihi ndakọrịta na-adịghị mma na PVC, a na-ekesa mmanụ na-esi na mpụga naanị n'etiti ihe ndị dị na PVC macroscopic na n'etiti PVC gbazere na mgbidi ígwè nke ngwá ọrụ nhazi mgbe agbazechara.Ọnụ ọgụgụ esemokwu dị n'etiti agbaze na nkedo na-ebelata, na agbaze enweghị ike zuru ezu.Igwe ọkụ na-ekpo ọkụ nke ihe anaghị adị mfe ịmegharị, nke na-ekere òkè na-egbu oge nke plasticization nke PVC resin.Mmetụta lubricating nke mmanụ mmanu dị n'èzí adịghị iche na nke mmanụ mmanụ n'ozuzu, ọ na-adaberekwa na mmetụta anụ ahụ.Tupu PVC plasticization, a na-ekpuchi ya nke ọma n'elu ihe ndị dị na PVC, na-eme ka ihe ndị ahụ na-ejikọta ibe ha, na-egbochi mgbasa ozi na adhesion nke akụkụ ahụ, na-ebelata njedebe nke njirimara urughuru na igbu oge plasticization.Mgbe PVC plasticization, ọ na-repelled n'elu nke PVC gbazee na-etolite a mmiri mmiri lubricating film, nke na-ebelata adhesion na esemokwu n'etiti PVC gbazee na metal elu nke nhazi akụrụngwa, si otú mbenata obodo overheating na melite thermal kwụsie ike nke. PVC.


Oge nzipu: Eprel-22-2022