1. Helu viscosity
Hōʻike ka helu viscosity i ka awelika molecular kaumaha o ka resin a ʻo ia ke ʻano nui no ka hoʻoholo ʻana i ke ʻano o ka resin. ʻOkoʻa nā waiwai a me ka hoʻohana ʻana o ka resin ma muli o ka viscosity. Ke piʻi nei ka nui o ka polymerization o ka resin PVC, nā waiwai mechanical e like me ka ikaika tensile, ka ikaika o ka hopena, ka ikaika o ka haʻihaʻi, a me ka elongation i ka hoʻonui ʻana, ʻoiai e emi ana ka ikaika o ka hua. Hōʻike nā hopena noiʻi e like me ka piʻi ʻana o ka polymerization o nā mea kōkua hoʻoili PVC, ʻoi aku ka maikaʻi o nā waiwai kumu o ka resin, aʻo ka hana ʻana o ka hana a me ka hana rheological. Hiki ke ʻike ʻia he pilina pili ka molecular weight distribution o PVC resin me ka hoʻoili plastik a me ka hana huahana.
2. Ka helu ʻeleʻele a me nā kiko melemele
ʻO nā ʻāpana haumia kekahi o nā hōʻailona koʻikoʻi no ka loiloi ʻana i ka resin PVC. ʻO nā kumu nui e pili ana i kēia hōʻailona: ʻo ka mea mua, ʻaʻole holoi pono ʻia ke koena mea ma ka pā uhi o ka ipu polymerization a hoʻohaumia ʻia ka mea maka i nā haumia; ʻO ka lua, ʻo ka lole mechanical i hui pū ʻia me nā haumia a me ka hana kūpono ʻole e lawe mai i nā haumia; I ke kaʻina hana o ka plastic, inā he nui nā ʻāpana haumia, e loaʻa nā hopena ʻino i ka hana a me ka ʻai ʻana i nā huahana PVC i hana ʻia. No ka laʻana, i ka hana ʻana a me ka hana ʻana i nā profiles, nui nā mea haumia a me nā ʻāpana, hiki ke hōʻike ʻia nā kiko ma ka ʻili o ka ʻaoʻao, a laila e hōʻemi i ka hopena o ka huahana. Eia kekahi, ma muli o ka non plasticization o nā ʻāpana haumia a i ʻole ka ikaika haʻahaʻa ʻoiai ka plasticization, ua hoʻemi ʻia nā waiwai mechanical o ka huahana.
3. Nā mea lele (me ka wai)
Hōʻike kēia hōʻailona i ka poho kaumaha o ka resin ma hope o ka hoʻomehana ʻia ʻana i kahi mahana. ʻO ka haʻahaʻa haʻahaʻa o nā mea maʻalahi hiki ke hoʻoulu i ka uila static, ʻaʻole kūpono i nā hana hānai i ka wā o ka hana ʻana a me ka hana ʻana; Inā kiʻekiʻe loa ka ʻikepili volatile, hiki i ka resin ke clumping a me ka maikaʻi ʻole o ka wai, a ua maʻalahi nā ʻōpala i ka wā o ka hana ʻana a me ka hana ʻana, he hopena maikaʻi ʻole ia i ka maikaʻi o ka huahana.
4. ʻIke ʻia ka mānoanoa
ʻO ka mānoanoa ʻike ʻia ke kaumaha o kēlā me kēia ʻāpana o ka pauka resin PVC ʻaʻole i hoʻopili ʻia. Pili ia i ka morphology particle, ka nui o ka nui o ka nui o ka resin. ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa, ka leo nui, ka hoʻopili wikiwiki ʻana o nā plasticizers, a me ka hana maʻalahi. ʻO ka mea ʻē aʻe, ke kiʻekiʻe awelika nui o ka nui o ka nui a me ka liʻiliʻi liʻiliʻi e alakaʻi i ka absorption o nā mea kōkua hana PVC. No ka hana ʻana i nā huahana paʻakikī, ʻaʻole kiʻekiʻe ka koi kaumaha molecular, a ʻaʻole i hoʻohui ʻia nā plasticizers i ka wā o ka hana. No laila, pono e emi ka porosity o nā ʻāpana resin, akā aia kahi koi no ka kahe maloʻo o ka resin, no laila ʻoi aku ka kiʻekiʻe o ka nui o ka resin.
5. Plasticizer absorption o ka resin
ʻO ka nui o ka absorption o nā mea hoʻoponopono PVC e hōʻike ana i ke kiʻekiʻe o nā pores i loko o nā ʻāpana resin, me ka kiʻekiʻe o ka ʻaila absorption rate a me ka porosity nui. Hoʻopili koke ka resin i nā plasticizer a loaʻa ka hana hoʻoponopono maikaʻi. No ka hoʻoheheʻe extrusion (e like me nā profiles), ʻoiai ʻaʻole kiʻekiʻe ka koi no ka resin porosity, ʻo nā pores i loko o nā ʻāpana he hopena adsorption maikaʻi i ka hoʻohui ʻana i nā mea hoʻohui i ka wā o ka hoʻoili ʻana, e hāpai ana i ka pono o nā mea hoʻohui.
6. Keokeo
Hōʻike ka keʻokeʻo i ke ʻano a me ka waihoʻoluʻu o ka resin, a me ka hoʻohaʻahaʻa ʻia e ka paʻa ʻole o ka wela a i ʻole ka lōʻihi o ka mālama ʻana, e hopena i ka emi nui o ka keʻokeʻo. He hopena koʻikoʻi ka pae o ka keʻokeʻo i ka pale ʻana o nā lāʻau a me nā huahana.
7. Ke koena vinyl chloride maʻiʻo
ʻO ke koena VCM e pili ana i ka ʻāpana o ka resin i hoʻopaʻa ʻole ʻia a hoʻoheheʻe ʻia i loko o ka polyethylene monomer, a ʻokoʻa kona hiki ke hoʻopili ʻia ma muli o ke ʻano o ka resin. Ma nā kumu koena VCM maoli, ʻo nā kumu nui he haʻahaʻa haʻahaʻa haʻahaʻa o ka hale kiaʻi wehe ʻia, ka ʻokoʻa o ke kaomi nui i loko o ka hale kiaʻi, a me ka morphology ʻāpana resin maikaʻi ʻole, hiki i kēia mau mea ke hoʻopili i ka desorption koena VCM, he hōʻailona ia no ke ana ʻana i ka pae o ka maʻemaʻe. resins. No nā huahana kūikawā, e like me ka tin foil paʻa paʻa kiʻiʻoniʻoni ʻeke ʻeke no nā lāʻau lapaʻau, ʻaʻole i kūpono ke koena VCM o ka resin i ka maʻamau (emi iho ma mua o 5PPM).
8. Paʻa wela
Inā kiʻekiʻe loa ka nui o ka wai i loko o ka monomer, e hoʻohua mai ia i ka acidity, e hōʻino i nā mea hana, e hana i kahi ʻōnaehana polymerization hao, a hopena i ka paʻa wela o ka huahana. Inā loaʻa ka hydrogen chloride a i ʻole ka chlorine manuahi i loko o ka monomer, e loaʻa nā hopena ʻino i ka hopena polymerization. Hiki i ka hydrogen chloride ke hana i loko o ka wai, e hoʻemi ana i ka waiwai pH o ka ʻōnaehana polymerization a pili i ka paʻa o ka ʻōnaehana polymerization. Eia kekahi, ʻo ka ʻike kiʻekiʻe o ka acetylene i loko o ka monomer o ka huahana e pili ana i ka paʻa wela o PVC ma lalo o ka hopena synergistic o ka acetaldehyde a me ka hao, e pili ana i ka hana hana o ka huahana.
9. kānana koena
Hōʻike ke koena sieve i ke kiʻekiʻe o ka nui o ka nui o ka resin, a ʻo kāna mau mea hoʻoikaika nui ʻo ka nui o ka dispersant i loko o ka polymerization formula a me ka hopena hoʻoulu. Inā ʻeleʻele a maikaʻi paha nā ʻāpana resin, e pili ana ia i ka pae o ka resin a loaʻa kekahi hopena i ka hana ʻana o ka huahana.
10. "Ka Maka I'a"
ʻO ka "maka iʻa", i ʻike ʻia he kiko aniani, e pili ana i nā ʻāpana resin alohilohi ʻaʻole i palaki ʻia ma lalo o nā kūlana hana thermoplastic maʻamau. Ka hopena i ka hana maoli. ʻO ke kumu nui o ka "maka iʻa" ʻo ia ke kiʻekiʻe o ka ʻike o nā mea paila kiʻekiʻe i loko o ka monomer, e hoʻoheheʻe ia i ka polymer i loko o nā ʻāpana i ka wā o ka polymerization kaʻina, e hoʻemi i ka porosity, e paʻakikī i nā ʻāpana, a lilo i "iʻa pōkole. maka" i ka wā o ka hana plasticization. Hoʻokaʻawale ʻole ʻia ka mea hoʻomaka i nā kulu ʻaila monomer. I loko o kahi ʻōnaehana polymerization me ka hoʻoili wela ʻole, ʻo ka hoʻokumu ʻana o ka resin me ka paona molekala ʻole, a i ʻole ka haumia o ka reactor i ka wā e hānai ai, koena resin, a i ʻole ka hoʻopili nui ʻana o ka mea reactor hiki ke kumu i ka "fisheye". ʻO ka hoʻokumu ʻana o nā "maka iʻa" pili pono i ka maikaʻi o nā huahana PVC, a i ka hoʻoili ʻana ma hope, e hoʻopili ia i ka aesthetics o nā huahana. E hōʻemi loa ia i nā waiwai mechanical e like me ka ikaika tensile a me ka elongation o nā huahana, hiki ke maʻalahi i ka perforation o nā kiʻi ʻoniʻoni a i ʻole nā pepa, ʻoi aku ka nui o nā huahana cable, e hoʻopilikia i kā lākou mau waiwai insulation uila. ʻO ia kekahi o nā hōʻailona koʻikoʻi i ka hana resin a me ka hana plasticization.
Ka manawa hoʻouna: Jun-12-2024
