Njirimara anụ ahụ na isi ọrụ nke ihe enyemaka nhazi PVC

Enyemaka nhazi PVC bụ polymer graft nke thermoplastic enwetara site na polymerization nke methyl methacrylate na acrylate site na ude mkpụrụ. A na-ejikarị ya eme ihe maka nhazi na mmepụta nke ihe PVC. Ọ nwere mmetụta dị mma n'ịkwalite mmetụta nkwụsị nke ihe PVC. Ọ nwere ike ịkwadebe usoro polymerization ọtụtụ nzọụkwụ site na iji mkpụrụ osisi polymerization, gụnyere omenala ude mmiri polymerization na isi shei ude polymerization. Ya uru idu ke ikike ịchịkwa mejupụtara, size, shei ọkpụrụkpụ, ruru nke shei ka isi radius, elu ọtọ e ji mara, wdg nke ahụ dị ka dị iche iche mkpa n'oge njikọ mmeghachi omume usoro, na n'ihi urughuru size nkesa bụ dịtụ edo edo. .

Ihe ndị bụ isi maka ihe enyemaka nhazi PVC bụ acrylic esters na methyl methacrylate. Na mmepụta n'ezie, acrylate na-ebu ụzọ mee ka ọ bụrụ monomers ndị ọzọ (dị ka styrene, acrylonitrile, wdg) site na ude mmiri na-emepụta polymer nwere obere iko mgbanwe okpomọkụ, ya bụ, isi nke nwere elastomer Njirimara, na mgbe ahụ graft copolymerized na methyl methacrylate. , styrene, wdg na-etolite a polima nwere isi shei Ọdịdị. Ọdịnaya siri ike nke ude mmiri polymerized a na-abụkarị ihe dịka 45% ± 3%, na ude mmiri na-akpọnwụ ma kpoo ya iji mee ka mmiri dị n'ime ngwaahịa ahụ na-erughị 1% (ọnụọgụ uka) iji nweta ngwaahịa ntụ ntụ ọcha.

Core shei lotion polymerization bụ isi nke teknụzụ mmepụta ACR resin. Enwere ike kewaa ihe owuwu isi nke ACR n'ime ụdị atọ: usoro siri ike dị nro dị nro, usoro shei siri ike dị nro, na nhazi akwa akwa atọ siri ike. Otú ọ dị, ụdị dị iche iche a na-ere ugbu a n'ahịa bụ "ụdị soft core hard shell structure". ACR resins nwere ihe owuwu a nwere arụmọrụ dị mma ma na-ejikarị ya eme ihe. Isi shei ude mmiri polymerization nke "soft core hard shei Ọdịdị" bụ usoro nke a na-anyadokwa monomer siri ike na mkpụrụ nke latex dị nro nke kpụrụ site na nzọụkwụ mbụ nke mmiri polymerization. Ụdị na usoro onunu ogwu nke emulsifiers, isi-shell ratio, shei monomer usoro nri, crosslinking ogo nke mkpụrụ latex particles (rubber core), mkpụrụ urughuru size, na ụdị na usoro onunu ogwu nke crosslinking niile nwere mmetụta dị ịrịba ama na isi-shell Ọdịdị. nke ACR latex particles na ngwaahịa ikpeazụ nke ACR.