ʻO ka hōʻuluʻulu o ka ʻike noiʻi o nā mea hoʻololi hopena PVC

(1) CPE

ʻO ka polyethylene chlorinated (CPE) he huahana pauka o ka chlorination i hoʻokuʻu ʻia o HDPE i loko o ka pae wai. Me ka piʻi ʻana o ka degere chlorination, lilo ka HDPE crystalline mua i mea amorphous elastomer. ʻO ka CPE i hoʻohana ʻia ma ke ʻano he mea hoʻoikaika paʻakikī maʻamau he 25-45% ka chlorine. Loaʻa i ka CPE kahi ākea o nā kumu a me nā kumukūʻai haʻahaʻa. Ma waho aʻe o kona hopena paʻakikī, loaʻa iā ia ke kūpaʻa anu, ka pale ʻana i ka wā, ke kūpaʻa ahi, a me ke kūpaʻa kemika. I kēia manawa, ʻo CPE ka mea hoʻololi i ka hopena koʻikoʻi ma Kina, ʻoi loa i ka hana ʻana i nā paipu PVC a me nā profiles, a ʻo ka hapa nui o nā hale hana e hoʻohana i ka CPE. ʻO ka nui o ka hoʻohui he 5-15 mau ʻāpana. Hiki ke hoʻohana ʻia ka CPE me nā mea hoʻoikaika paʻakikī ʻē aʻe, e like me ka rubber a me ka EVA, no ka loaʻa ʻana o nā hopena maikaʻi aʻe, akā ʻaʻole kūpaʻa nā mea hoʻohui i ka ʻelemakule.

(2) ACR

He copolymer ka ACR o nā monomers e like me ka methyl methacrylate a me ka ester acrylic. ʻO ia ka mea hoʻololi hopena maikaʻi loa i hoʻomohala ʻia i nā makahiki i hala iho nei a hiki ke hoʻonui i ka ikaika hopena o nā mea i nā manawa he ʻumi. No ka ACR ka mea hoʻololi i ka hopena o ka hoʻolālā kumu-shell, nona ka pūpū i haku ʻia me ka methyl methacrylate ethyl acrylate polymer, a me ka elastomer rubber i hoʻokumu ʻia e ka crosslinking me ka butyl acrylate ma ke ʻano he ʻāpana kaulahao kumu i puʻunaue ʻia i ka papa o loko o nā ʻāpana. He kūpono kūpono no ka hoʻololi ʻana i ka hopena o nā huahana plastik PVC no ka hoʻohana ʻana i waho, me ka hoʻohana ʻana i ka ACR ma ke ʻano he mea hoʻololi hopena i ka puka plastik PVC a me nā kiʻi puka aniani nā hiʻohiʻona o ka hana hoʻoponopono maikaʻi, ka ʻili maʻemaʻe, ke kūpaʻa ʻelemakule maikaʻi, a me ka ikaika o ke kihi welding kiʻekiʻe i hoʻohālikelike ʻia me nā mea hoʻololi ʻē aʻe. , akā ʻo ke kumukūʻai ma kahi o hoʻokahi hapakolu kiʻekiʻe ma mua o CPE.

(3) MBS

ʻO MBS he copolymer o ʻekolu monomers: methyl methacrylate, butadiene, a me styrene. ʻO ka ʻāpana solubility o MBS aia ma waena o 94 a me 9.5, kahi kokoke i ka ʻāpana solubility o PVC. No laila, he kūpono maikaʻi me PVC. ʻO kāna hiʻohiʻona nui loa ma hope o ka hoʻohui ʻana i ka PVC, hiki ke hana ʻia i kahi huahana māmā. ʻO ka maʻamau, hiki i ka hoʻohui ʻana i nā ʻāpana 10-17 i ka PVC hiki ke hoʻonui i kona ikaika hopena e 6-15 mau manawa. Eia nō naʻe, ke ʻoi aku ka nui o ka MBS i hoʻohui ʻia ma mua o 30 mau ʻāpana, emi maoli ka ikaika o ka hopena o PVC. Loaʻa i ka MBS ponoʻī ka hopena maikaʻi o ka hana, ka ʻike maikaʻi, a me ka transmittance o luna o 90%. ʻOiai e hoʻomaikaʻi ana i ka hana hopena, he liʻiliʻi ka hopena i nā waiwai ʻē aʻe o ka resin, e like me ka ikaika tensile a me ka elongation i ka wā haki. He pipiʻi ka MBS a hoʻohana pinepine ʻia me ka hoʻololi ʻana i ka hopena e like me EAV, CPE, SBS, etc. ʻAʻole ia i hoʻohana ma ke ʻano he mea hoʻololi i ka hopena i ka hana ʻana i nā puka aniani a me ka puka aniani.

(4) SBS

ʻO SBS kahi copolymer poloka ternary o styrene, butadiene, a me styrene, i ʻike ʻia hoʻi ʻo thermoplastic styrene butadiene rubber. No nā elastomers thermoplastic a hiki ke hoʻokaʻawale ʻia kona ʻano i ʻelua ʻano: hōkū a me linear. ʻO ka lakio o ka styrene a me ka butadiene ma SBS he 30/70, 40/60, 28/72, a me 48/52. Hoʻohana nui ʻia ma ke ʻano he hoʻololi hopena no HDPE, PP, a me PS, me kahi ʻāpana o 5-15 mau ʻāpana. ʻO ka hana nui o SBS ʻo ia ka hoʻomaikaʻi ʻana i kona pale ʻana i ka hopena haʻahaʻa haʻahaʻa. ʻAʻole kūpono ka SBS no nā huahana hoʻohana i waho no ka wā lōʻihi.

(5) ABS

ʻO ABS kahi copolymer ternary o styrene (40% -50%), butadiene (25% -30%), a me acrylonitrile (25% -30%), hoʻohana nui ʻia e like me nā plastics engineering a hoʻohana ʻia no ka hoʻololi ʻana i ka hopena PVC, me ka haʻahaʻa haʻahaʻa. - nā hopena hoʻololi i ka wela. Ke hiki i ka nui o ka ABS i hoʻohui ʻia i 50 mau ʻāpana, hiki ke like ka ikaika o ka hopena o PVC me ka ABS maʻemaʻe. ʻO ka nui o ka ABS i hoʻohui ʻia he 5-20 mau ʻāpana. ʻAʻole kūpono ka ABS no ka hoʻohana ʻana i waho i nā huahana no ka wā lōʻihi. ʻAʻole ia i hoʻohana ma ke ʻano he mea hoʻololi i ka hopena i ka hana ʻana i nā puka aniani a me ka puka aniani.

(6) EVA

ʻO ka EVA kahi copolymer o ka ethylene a me ka vinyl acetate, a ʻo ka hoʻokomo ʻana o ka vinyl acetate e hoʻololi i ka crystallinity o polyethylene. He ʻokoʻa loa ka ʻike o ka vinyl acetate, a he ʻokoʻa ka refractive index o EVA a me PVC, e paʻakikī ai ka loaʻa ʻana o nā huahana māmā. No laila, hoʻohana pinepine ʻia ʻo EVA me nā resins pale ʻē aʻe. ʻO ka nui o ka EVA i hoʻohui ʻia ma lalo o 10 mau ʻāpana.