Loaʻa i nā molekole polypropylene nā hui methyl, hiki ke hoʻokaʻawale ʻia i ka polypropylene isotactic, polypropylene atactic a me ka polypropylene syndiotactic e like me ka hoʻonohonoho ʻana o nā hui methyl. Ke hoʻonohonoho ʻia nā hui methyl ma ka ʻaoʻao like o ke kaulahao nui, ua kapa ʻia ʻo ia he polypropylene isotactic; inā hoʻolaha ʻia nā hui methyl ma nā ʻaoʻao ʻelua o ke kaulahao nui, ua kapa ʻia ʻo ia he polypropylene atactic; ke hoʻonohonoho ʻia nā hui methyl ma nā ʻaoʻao ʻelua o ke kaulahao nui, ua kapa ʻia ʻo ia he syndiotactic. polypropylene. I ka hana maʻamau o ka resin polypropylene, ʻo ka nui o ke ʻano isotactic (i kapa ʻia ʻo isotacticity) ma kahi o 95%, a ʻo ke koena he polypropylene atactic a syndiotactic paha. Ua hoʻokaʻawale ʻia ka resin polypropylene i hana ʻia i Kina i kēia manawa e like me ka helu hoʻoheheʻe a me nā mea hoʻohui i hoʻohui ʻia.
ʻO ka polypropylene atactic kahi huahana ʻaoʻao o ka hana ʻana o ka polypropylene isotactic. Hana ʻia ka polypropylene atactic i ka hana ʻana o ka polypropylene isotactic, a hoʻokaʻawale ʻia ka polypropylene isotactic mai ka polypropylene atactic e kahi ʻano hoʻokaʻawale.
He mea thermoplastic elastic loa ka polypropylene atactic me ka ikaika tensile maikaʻi. Hiki ke hoʻoluʻu ʻia e like me ka ethylene-propylene rubber.
Ka manawa hoʻouna: Pepeluali-28-2023