ʻO ka ʻokoʻa ma waena o PP a me PVC ʻaʻohe mea mai ka helehelena a i ʻole ka manaʻo hiki ke ʻokoʻa loa; He paʻakikī ka manaʻo o PP a he palupalu ka PVC.
ʻO PP kahi resin thermoplastic i hoʻomākaukau ʻia e ka polymerization o propylene. ʻEkolu hoʻonohonoho o nā huahana isochronous, unregulated a interchronous, a ʻo nā huahana isochronous nā mea nui o nā huahana ʻoihana. Hoʻokomo pū ka Polypropylene i nā copolymers o propylene a me kahi liʻiliʻi o ka ethylene. ʻO ka maʻamau translucent kala ʻole paʻa, ʻaʻala ʻole ʻona ʻole.
Nā hiʻohiʻona: ʻoi aku ka maikaʻi o nā mea ʻawaʻawa, ʻono ʻole, haʻahaʻa haʻahaʻa, ikaika, ʻoʻoleʻa, paʻakikī a me ka pale wela ma mua o ka polyethylene haʻahaʻa haʻahaʻa, hiki ke hoʻohana ʻia ma 100 degere a pēlā paha. ʻAʻole pili ʻia nā waiwai uila maikaʻi a me ka insulation kiʻekiʻe e ka haʻahaʻa, akā e lilo i brittle i ka haʻahaʻa haʻahaʻa, ʻaʻole paʻa, maʻalahi i ka makahiki. He kūpono no ka hana ʻana i nā ʻāpana mechanical maʻamau, nā ʻāpana kū i ka corrosion a me nā ʻāpana insulation.
ʻO PVC kekahi o ka hana nui loa o ka honua i nā huahana plastik, maʻalahi, hoʻohana nui ʻia, polyvinyl chloride resin he keʻokeʻo a i ʻole ka pauka melemele māmā. Hiki ke hoʻohui ʻia nā mea hoʻohui like ʻole e like me nā USES ʻokoʻa, a ʻo nā plastic polyvinyl chloride i loaʻa nā ʻano kino a me nā ʻano mechanical. ʻO ka hoʻohui ʻana i ka plasticizer kūpono i loko o ka polychloroethylene resin hiki ke hana ʻia i nā ʻano huahana paʻakikī, palupalu a maopopo. ʻO ka nui o ka PCC maʻemaʻe he 1.4g / cm3, a ʻo ka nui o nā plasticizer PCC a me nā mea hoʻopihapiha maʻamau he 1.15-2.00g / cm3. ʻO ka POLYchlorethylene paʻakikī he tensile maikaʻi, flexural, compressive a me ka hopena hopena a hiki ke hoʻohana ʻia ma ke ʻano he mea hana wale nō.
Ka manawa kau: Nov-03-2020