ʻElua ʻano nui o ka polypropylene i loaʻa: nā homopolymers a me nā copolymers. Ua māhele hou ʻia nā copolymers i nā copolymers poloka a me nā copolymers random.
ʻOi aku ka maikaʻi o kēlā me kēia māhele i kekahi mau noi ma mua o nā mea ʻē aʻe. Ua kapa pinepine ʻia ʻo Polypropylene ʻo ke "kila" o ka ʻoihana plastik ma muli o nā ʻano like ʻole e hiki ai ke hoʻololi a hoʻopilikino ʻia e lawelawe pono i kahi kumu kikoʻī.
Hoʻokō pinepine ʻia kēia ma ka hoʻokomo ʻana i nā mea hoʻohui kūikawā iā ia a i ʻole ma ka hana ʻana iā ia ma ke ʻano kūikawā. He waiwai koʻikoʻi kēia hiki ke hoʻololi.
Homopolymer polypropylenehe papa hana maʻamau. Hiki iā ʻoe ke noʻonoʻo i kēia e like me ke kūlana paʻamau o ka mea polypropylene.Copolymer polokaLoaʻa i ka polypropylene nā ʻāpana co-monomer i hoʻonohonoho ʻia i loko o nā poloka (ʻo ia hoʻi, ma ke ʻano maʻamau) a loaʻa ma waena o 5% a 15% ethylene.
Hoʻomaikaʻi ʻo Ethylene i kekahi mau waiwai, e like me ke kūpaʻa i ka hopena ʻoiai ʻo nā mea hoʻohui ʻē aʻe e hoʻonui i nā waiwai ʻē aʻe.
Copolymer kauleleʻO ka polypropylene - i kū'ē i ka polypropylene block copolymer - loaʻa nā ʻāpana co-monomer i hoʻonohonoho ʻia ma nā ʻano maʻamau ʻole a kaulele paha ma ka mole polypropylene.
Hoʻohui pinepine ʻia lākou me nā wahi āpau ma waena o 1% a 7% ethylene a ua koho ʻia no nā noi kahi e makemake ʻia ai kahi huahana ʻoi aku ka maʻalahi a me ka maopopo.
Ka manawa hoʻouna: Dec-05-2022