He aha ka ʻokoʻa ma waena o nā ʻeke meaʻai a me nā ʻeke plastik maʻamau?

1. Polyethylene: ʻO ka mea nui he polyethylene resin, a ua hoʻohui ʻia kahi liʻiliʻi o ka lubricant, ka mea kahiko a me nā mea hoʻohui ʻē aʻe.ʻO ka polyethylene he mea ʻala ʻole, ʻaʻohe mea ʻawaʻawa, waiu keʻokeʻo paʻa waxy.Hoʻokaʻawale ʻia ʻo HDPE i ka polyethylene kiʻekiʻe, polyethylene haʻahaʻa haʻahaʻa a me ka polyethylene haʻahaʻa haʻahaʻa linear e like me ka morphology, ʻike a me ke kaulahao o ka polymer.
ʻO ka polyethylene plastic ka mea maʻamau i kapa ʻia ʻo HDPE kaomi lalo.Hoʻohālikelike ʻia me ka polyethylene haʻahaʻa haʻahaʻa a me LLDPE, ʻoi aku ka kiʻekiʻe o ka pale ʻana o ka wela, ka pale ʻana i ka abrasion, ka hydrophilicity wai a me ke kūʻē ʻana o ka māwae koʻikoʻi i nā kaiapuni kūlohelohe.Eia kekahi, he ikaika dielectric maikaʻi loa ka polyethylene plastic, ka hopena a me ke kū anuanu.He kūpono ia no nā huahana hollow (e like me nā ʻōmole aniani, nā ʻōmole detergent), ka hoʻoheheʻe ʻana, ka hoʻoheheʻe ʻana a me nā ʻoihana ʻē aʻe.
Linear low-density polyethylene (LINEARLOWDENSYPOYETHYLENE, LLDPE) he polymer i hana ʻia e ka polymerization o ka ethylene a me kahi mea liʻiliʻi o nā olefins kiʻekiʻe i mua o kahi catalyst.Ua like kona helehelena me ka polyethylene haʻahaʻa haʻahaʻa, akā maikaʻi kona ʻili o ka ʻili, me ka elongation haʻahaʻa haʻahaʻa a me ka Modulus kiʻekiʻe, ke kūlou ʻana i ke kūpaʻa, ke kūʻē ʻana i ke koʻikoʻi o ka honua, ka haʻahaʻa haʻahaʻa hopena i ka ikaika compressive a me nā pono ʻē aʻe.
Hoʻohana nui ʻia no ka hoʻoheheʻe ʻana, extrusion, blow molding a me nā ʻano hana ʻē aʻe e hana ai i nā kiʻiʻoniʻoni, nā mea e pono ai i kēlā me kēia lā, nā paipu, nā uea a me nā kaula.
2. Polypropylene: ʻO ka mea nui he polypropylene resin, he kiʻekiʻe ka nani a me ka transmittance māmā.ʻOi aku ka maikaʻi o ka hana hoʻopaʻa wela ma mua o ka PE, akā ʻoi aku ka maikaʻi ma mua o nā mea plastic ʻē aʻe.
1. ʻOi aku ka maikaʻi o ka hana pale ma mua o PE, ʻoi aku ka ikaika, ka paʻakikī a me ka rigidity ma mua o PE;
2. ʻOi aku ke olakino a me ka palekana ma mua o nā haʻuki
3. Loaʻa iā ia ke kūpaʻa wela maikaʻi loa a hiki ke hoʻohana ʻia no ka manawa lōʻihi ma kahi mahana o 100 degere Celsius, akā ʻo kona kūpaʻa anu e hoʻomaikaʻi i ka hana o HDPE a lilo i brittle ma -17 degere Celsius.
ʻOi aku ka maikaʻi o ka ʻeke ʻeke pepa i hana ʻia me ka kiʻiʻoniʻoni plastik ma mua o ka platinum, nā mea maka a me nā mea waimaka e pili ana i ke kūpaʻa a me ka pale ʻana i ka wai, akā maikaʻi ʻole ka hopena paʻi paʻi a haʻahaʻa ke kumukūʻai.Hiki ke hoʻohana ʻia no ka hoʻihoʻi ʻana i nā lollipops a me nā mea ʻai.Hiki ke hana ʻia i ʻeke ʻeke kiʻiʻoniʻoni hiki ke hoʻemi ʻia i ka meaʻai, e like me ka meaʻai a me ka meaʻai ʻeke ʻeke pepa a me nā ʻeke ʻeke hoʻohuihui ʻē aʻe.
3. Polystyrene: He polymer me styrene monomer e like me ka mea nui.Alohilohi a ʻālohilohi kēia mea.
1. ʻOi aku ka maikaʻi o ka pale ʻana i ka wai ma mua o ka PE, ʻoi aku ka laulā o ka paʻa kemika, kiʻekiʻe ka paʻakikī, akā nui ka brittleness.
2. ʻO ke kūpaʻa haʻahaʻa haʻahaʻa maikaʻi, akā maikaʻi ʻole ke kūpaʻa wela kiʻekiʻe, ʻaʻole hiki ke ʻoi aku ma mua o 60≤80 ℃.
3. Ke kumu palekana maikaʻi.