ʻO nā waiwai kino a me nā hana nui o nā mea kōkua hana PVC

ʻO ke kōkua kaʻina hana PVC he thermoplastic graft polymer i loaʻa mai ka polymerization o ka methyl methacrylate a me ka acrylate ma o ka lotion hua. Hoʻohana nui ia no ka hana ʻana a me ka hana ʻana o nā mea PVC. He hopena maikaʻi ia i ka hoʻomaikaʻi ʻana i ka hopena o nā mea PVC. Hiki iā ia ke hoʻomākaukau i ke ʻano polymerization multi-step me ka hoʻohana ʻana i ka polymerization lotion seed, me ka polymerization lotion kuʻuna a me ka polymerization lotion shell core. Aia kona pōmaikaʻi i ka hiki ke hoʻomalu i ka haku mele, ka nui, ka mānoanoa o ka pūpū, ka ratio o ka pūpū i ka radius core, nā hiʻohiʻona hana o ka ʻili, a me nā mea ʻē aʻe o nā ʻāpana e like me nā pono like ʻole i ka wā o ke kaʻina hana synthesis, a ʻo ka hoʻoili ʻana o ka nui o ka nui o nā mea like ʻole. .

ʻO nā mea waiwai nui no nā mea kōkua hana PVC he esters acrylic a me ka methyl methacrylate. Ma ka hana maoli, hoʻohui mua ʻia ka acrylate me nā monomers ʻē aʻe (e like me ka styrene, acrylonitrile, etc.) ma o ka lotion e hana i ka polymer me ka haʻahaʻa aniani hoʻololi wela, ʻo ia hoʻi, kahi kumu me nā waiwai elastomer, a laila kāpili copolymerized me methyl methacrylate. , styrene, a pela aku no ka hana ana i polymer me ke kino o ka pūpū. ʻO ka maʻiʻo paʻa o kēia lotion polymerized lotion ma kahi o 45% ± 3%, a maloʻo a maloʻo ka wai i mea e emi ai ka wai o ka huahana ma mua o 1% (mass fraction) e loaʻa ai nā huahana pauka keʻokeʻo.

ʻO ka polymerization lotion shell ka mea nui o ka ʻenehana hana resin ACR. Hiki ke hoʻokaʻawale ʻia ke ʻano o ka pūpū kumu o ACR i ʻekolu ʻano: ʻo ka paʻa paʻakikī paʻakikī paʻakikī paʻakikī, paʻakikī paʻa paʻa paʻa paʻa, a me ka paʻakikī paʻakikī paʻakikī ʻekolu-papa. Eia nō naʻe, ʻo ke ʻano nui i kūʻai ʻia ma ka mākeke ʻo "soft core hard shell structure". ʻO nā resins ACR me kēia hoʻolālā he hana maikaʻi a hoʻohana nui ʻia. ʻO ka polymerization lotion shell core o ka "soft core hard shell structure" kahi hana e hoʻopili ʻia ai ka monomer paʻakikī i ka hua o nā ʻāpana latex palupalu i hana ʻia e ka hana mua o ka polymerization lotion. ʻO ke ʻano a me ke ʻano o nā emulsifiers, ratio core-shell, shell monomer feeding method, crosslinking degree of seed latex particles (rubber core), seed particle size, a me ke ʻano a me ke ʻano o ka crosslinking agent, he hopena koʻikoʻi ko lākou a pau i ka hoʻolālā core-shell. o ACR latex particles a me ka hana hope loa o ACR.