Ke hoʻohālikelike ʻia me nā mea aniani a me nā mea metala, ʻo nā hiʻohiʻona nui o nā plastics:
1, he haʻahaʻa ke kumu kūʻai, hiki ke hoʻohana hou ʻia me ka ʻole o ka disinfection, kūpono no ka hoʻohana ʻana ma ke ʻano he kumu waiwai no ka hana ʻana i nā lāʻau lapaʻau hoʻopau;
2, maʻalahi ka hana ʻana, hiki ke hoʻohana ʻia ka hoʻohana ʻana i kāna plasticity i nā ʻano hana pono like ʻole, a paʻakikī ke hana ʻana i ka metala a me ke aniani i loko o ke ʻano paʻakikī o nā huahana;
3, ʻoʻoleʻa, elastic, ʻaʻole maʻalahi e haki e like me ke aniani;
4, me ka inertness kemika maikaʻi a me ka palekana olaola.
ʻO kēia mau mea maikaʻi e hana i nā plastics i hoʻohana nui ʻia i nā lāʻau lapaʻau, ka mea nui me ka polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), polycarbonate (PC), ABS, polyurethane, polyamide, thermoplastic elastomers, polysulfone a me polyether ether ketone.Hiki i ka hui ʻana ke hoʻomaikaʻi i ka hana o nā plastics, i ʻike ʻia ka hana maikaʻi loa o nā resins like ʻole, e like me ka polycarbonate / ABS, polypropylene/elastomer blending modification.
Ma muli o ka hoʻopili ʻana me ka lāʻau lapaʻau wai a i ʻole ka hoʻopili ʻana me ke kino o ke kanaka, ʻo nā koi kumu o nā plastic plastics he paʻa kemika a me ka biosafety.I ka pōkole, ʻaʻole hiki ke hoʻoheheʻe ʻia nā ʻāpana o nā mea plastik i loko o ka lāʻau lapaʻau wai a i ʻole ke kino o ke kanaka, ʻaʻole ia e hōʻeha i ka ʻona a me ka pōʻino i nā ʻiʻo a me nā kino, a ʻaʻohe mea ʻawaʻawa a maikaʻi ʻole i ke kino kanaka.I mea e hōʻoia ai i ka biosafety o nā plastic plastic, nā lāʻau lapaʻau maʻamau i kūʻai ʻia ma ka mākeke e hōʻoia ʻia a hoʻāʻo ʻia e nā luna lapaʻau, a ʻike maopopo ʻia nā mea hoʻohana i nā māka he lāʻau lapaʻau.
ʻO nā lāʻau lapaʻau lapaʻau ma ʻAmelika Hui Pū ʻIa maʻamau i ka palapala FDA a me ka USPVI biological detection, a me nā plastic grade medical ma Kina e hoʻāʻo pinepine ʻia e Shandong Medical Device Testing Center.I kēia manawa, aia nō ka nui o nā lāʻau lapaʻau lapaʻau ma ka ʻāina me ka ʻole o ka manaʻo paʻa o ka biosafety hōʻoia, akā me ka hoʻomaikaʻi lohi ʻana o nā lula, e hoʻomaikaʻi hou ʻia kēia mau kūlana.
E like me ka hoʻolālā a me nā koi ikaika o ka huahana mea hana, koho mākou i ke ʻano kūpono o ka plastic a me ka papa kūpono, a hoʻoholo i ka ʻenehana hana o ka mea.Loaʻa kēia mau waiwai i ka hana hana, ka ikaika mechanical, ke kumukūʻai o ka hoʻohana ʻana, ke ʻano hui, sterilization, etc.
ʻEhiku mau lāʻau lapaʻau i hoʻohana mau ʻia
1. Polyvinyl chloride (PVC)
ʻO PVC kekahi o nā ʻano ʻano palaki nui loa i ka honua.ʻO ka resin PVC keʻokeʻo a i ʻole ka pauka melemele māmā, ʻo ka PVC maʻemaʻe he atactic, paʻakikī a palupalu, ʻaʻole hoʻohana ʻia.E like me nā hoʻohana like ʻole, hiki ke hoʻohui ʻia nā mea hoʻohui like ʻole e hana i nā ʻāpana plastik PVC e hōʻike i nā ʻano kino a me nā ʻano mechanical.ʻO ka hoʻohui ʻana i ka nui o ka plasticizer i ka resin PVC hiki ke hana i nā ʻano huahana paʻakikī, palupalu a ʻike.
ʻAʻole i loaʻa a i ʻole i loko o ka PVC paʻa kahi liʻiliʻi o ka plasticizer, he tensile maikaʻi, kulou, compressive a me ka hopena hopena, hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻolālā wale nō.ʻOi aku ka PVC palupalu i nā plasticizers, a ua hoʻonui ʻia kona palupalu, elongation i ka haki a me ke kūpaʻa anu, akā ua hoʻemi ʻia ka brittleness, paʻakikī a me ka ikaika tensile.ʻO ka nui o ka PVC maʻemaʻe he 1.4g / cm3, a ʻo ka nui o nā ʻāpana plastik PVC me nā plasticizers a me nā mea hoʻopihapiha maʻamau i ka laulā o 1.15 ~ 2.00g / cm3.
Wahi a nā manaʻo o ka mākeke, ma kahi o 25% o nā huahana plastik olakino he PVC.ʻO kēia ma muli o ke kumukūʻai haʻahaʻa o ka resin, ka laulā o nā noi, a me kāna hana maʻalahi.ʻO nā huahana PVC no nā noi olakino: nā paipu hemodialysis, nā masks hanu, nā paipu oxygen a pēlā aku.
2. Polyethylene (PE, Polyethylene)
ʻO ka polyethylene plastic ka ʻano nui loa o ka ʻoihana plastik, ka waiu, ka ʻono ʻole, ka ʻala a me ka ʻawaʻawa.Hōʻike ʻia ia e ke kumukūʻai haʻahaʻa, hana maikaʻi, hiki ke hoʻohana nui ʻia i ka ʻoihana, ka mahiʻai, ka ʻeke a me ka ʻoihana i kēlā me kēia lā, a noho i kahi kūlana pivotal i ka ʻoihana plastik.
Loaʻa ka PE i ka polyethylene haʻahaʻa haʻahaʻa (LDPE), polyethylene kiʻekiʻe (HDPE) a me ka polyethylene kaumaha ultra-high molecular weight (UHDPE) a me nā ʻano ʻano ʻē aʻe.He liʻiliʻi nā kaulahao lālā o ka HDPE ma ke kaulahao polymer, ʻoi aku ka nui o ke kaumaha molecular pili, crystallinity a me ka paʻa, ʻoi aku ka paʻakikī a me ka ikaika, ka opacity maikaʻi ʻole, ka helu heheʻe kiʻekiʻe, a hoʻohana pinepine ʻia i nā ʻāpana injection.He nui nā kaulahao lālā o ka LDPE, no laila he liʻiliʻi ke kaumaha molekala pili, he haʻahaʻa ka crystallinity a me ka density, me ka palupalu maikaʻi, ka hopena o ka hopena a me ka transparency, hoʻohana pinepine ʻia no ka puhi ʻana i ke kiʻiʻoniʻoni, ua hoʻohana nui ʻia i kēia manawa PVC koho.Hiki ke hui pū ʻia nā mea HDPE a me LDPE e like me nā koi hana.Loaʻa i ka UHDPE ka ikaika hopena kiʻekiʻe, ka haʻahaʻa haʻahaʻa, ke kūʻē ʻana i ke koʻikoʻi a me nā hiʻohiʻona hoʻoheheʻe ʻana i ka ikehu maikaʻi, e lilo ia i mea kūpono no nā mea hoʻohui hip, kuli a me nā poʻohiwi.
3. polypropylene (PP, polypropylene)
ʻO ka polypropylene ka waihoʻoluʻu ʻole, ʻaʻala a ʻaʻohe mea ʻawaʻawa.Ua like ia me ka polyethylene, akā ʻoi aku ka māmā a ʻoi aku ka māmā ma mua o ka polyethylene.ʻO ka PP he thermoplastic me nā waiwai maikaʻi loa, me ka gravity kikoʻī liʻiliʻi (0.9g / cm3), ʻaʻohe mea ʻawaʻawa, maʻalahi i ka hana ʻana, ka hopena hopena, anti-deflection a me nā pono ʻē aʻe.Loaʻa iā ia ka nui o nā noi i ke ola o kēlā me kēia lā, me nā ʻeke i ulana ʻia, nā kiʻiʻoniʻoni, nā pahu huli, nā mea pale uea, nā mea pāʻani, nā bumper kaʻa, nā fibers, nā mīkini holoi a pēlā aku.
ʻO ka lāʻau PP he kiʻekiʻe kiʻekiʻe, pale maikaʻi a me ka pale ʻana i ka radiation, i loaʻa i kahi ākea o nā noi i ka lāʻau lapaʻau a me ka ʻoihana hoʻopili.ʻO nā mea hana ʻole PVC me PP ma ke ʻano he kino nui i kēia manawa i hoʻohana nui ʻia e like me nā mea ʻokoʻa i nā mea PVC.
4. Polystyrene (PS) a me K resin
ʻO PS ke kolu o nā ʻano plastik nui loa ma hope o ka polyvinyl chloride a me ka polyethylene, i hoʻohana pinepine ʻia e like me ka hoʻoili ʻana a me ka hoʻohana ʻana i nā mea hoʻokahi, ʻo nā hiʻohiʻona nui he māmā ke kaumaha, māmā, maʻalahi ke kala, maikaʻi ka hana hoʻoheheʻe ʻana, no laila hoʻohana nui ʻia i nā plastics i kēlā me kēia lā. , nā ʻāpana uila, nā mea ʻike maka a me nā lako moʻomeheu a hoʻonaʻauao.He paʻakikī a he palupalu kona ʻano, a he kiʻekiʻe ka nui o ka hoʻonui ʻana i ka wela, e kaupalena ana i kāna noi ʻana i ka ʻenekinia.I nā makahiki i hala iho nei, ua hoʻomohala ʻia nā polystyrene a me nā copolymers i hoʻololi ʻia e lanakila ai i nā hemahema o ka polystyrene i kekahi ʻano.K resin kekahi o ia mau mea.
Hana ʻia ka resin K me ka styrene a me ka copolymerization butadiene, he polymer amorphous, maopopo, ʻono ʻole, non-toxic, density o 1.01g/cm3 (haʻahaʻa ma mua o PS, AS), ʻoi aku ka nui o ke kūʻē ʻana ma mua o PS, ʻike (80 ~ 90%). ) maikaʻi, thermal deformation wela o 77 ℃, ʻO ka nui o ka butadiene i loko o ka mea K, he ʻokoʻa nō hoʻi kona paʻakikī, ma muli o ka maikaʻi o ka wai o ka mea K, ākea ka laulā wela, no laila ua maikaʻi kāna hana hana.
ʻO nā mea hoʻohana nui i ke ola o kēlā me kēia lā, ʻo ia nā kīʻaha, LIDS, nā ʻōmole, nā mea hoʻonaninani, nā hangers, nā mea pāʻani, nā huahana pani PVC, nā meaʻai meaʻai a me nā lako lāʻau lapaʻau.
5. ABS, Acrylonitrile Butadiene Styrene copolymers
Loaʻa i ka ABS kekahi rigidity, paʻakikī, kū'ē i ka hopena a me ke kū'ē kemika, ka pale radiation a me ka ethylene oxide disinfection resistance.
Hoʻohana nui ʻia ʻo ABS i ka lāʻau lapaʻau e like me nā mea hana ʻokiʻoki, nā pahu pahu, nā nila palaka, nā pahu mea hana, nā mea diagnostic a me nā hale kōkua hoʻolohe, ʻoi aku ka nui o nā hale lāʻau lapaʻau nui.
6. Polycarbonate (PC, Polycarbonate)
ʻO nā hiʻohiʻona maʻamau o ka PCS ʻo ka paʻakikī, ka ikaika, ka ʻoʻoleʻa, a me ka hoʻomaʻamaʻa ʻana i ka mahu me ka wela, kahi i makemake ʻia ai ka PCS ma ke ʻano he kānana hemodialysis, nā lima mea hana oki, a me nā pahu oxygen (ke hoʻohana ʻia i ka ʻoki ʻana i ka naʻau, hiki i kēia mea hana ke wehe i ke kalapona mai ka koko a hoʻonui i ka oxygen);
ʻO nā mea hoʻohana ʻē aʻe o ka PC i ka lāʻau lapaʻau e pili ana i nā ʻōnaehana injection ʻole o ka nila, nā mea hana perfusion, nā kīʻaha koko centrifuge, a me nā pistons.I ka hoʻohana ʻana i kāna ʻike kiʻekiʻe, hana ʻia nā aniani myopia maʻamau i PC.
7. PTFE (Polytetrafluoro ethylene)
ʻO ka polytetrafluoroethylene resin he pauka keʻokeʻo, hiʻohiʻona waxy, ʻoluʻolu a paʻa ʻole, ʻo ia ka plastik nui loa.He mau waiwai maikaʻi loa ka PTFE i like ʻole me nā thermoplastics maʻamau, no laila ua kapa ʻia ʻo ia ʻo "plastic king".ʻO kona friction coefficient ka mea haʻahaʻa loa ma waena o nā plastics, he biocompatibility maikaʻi, a hiki ke hana ʻia i nā kīʻaha koko artificial a me nā mea i hoʻokomo pono ʻia.
Ka manawa hoʻouna: Oct-25-2023