ʻO ka monomer o PTFE he tetrafluoroethylene (TFE), a ʻo kona helu hoʻolapalapa he -76.3 degere Celsius.He pahū loa ia i mua o ka oxygen a hiki ke hoʻohālikelike ʻia me ka pauda.No laila, ʻo kāna hana, mālama ʻana a me ka hoʻohana ʻana i ka ʻoihana e koi i ka pale koʻikoʻi, pono e hoʻomalu ʻia ka huahana, ʻo ia kekahi o nā kumu nui o ke kumukūʻai PTFE.Hoʻohana maʻamau ʻo TFE i ka polymerization hoʻokuʻu radical manuahi i ka ʻoihana, me ka hoʻohana ʻana i ka persulfate ma ke ʻano he mea hoʻomaka, hiki i ka mahana hopena ma waena o 10-110 degere Celsius, hiki i kēia ʻano ke kiʻi i ke kaumaha molecular kiʻekiʻe loa o ka PTFE (ʻoi aku ma mua o 10 miliona), ʻaʻohe kaulahao ʻike. hiki ke hoʻololi.
No ka mea he kiʻekiʻe loa ka helu heheʻe o ka PTFE, kahi kokoke i ka mahana decomposition, a ʻaʻole liʻiliʻi kona molecular mass, aneane hiki ʻole ke hoʻokō i ka kahe kahe o ka hoʻoheheʻe maikaʻi ma ka hilinaʻi wale ʻana i ka hoʻomehana e like me nā polymers thermoplastic maʻamau.Pehea i hana ʻia ai ka lipine Teflon a i ʻole ka paipu Teflon?I ka hihia o ka hoʻoheheʻe ʻana, ninini ʻia ka pauka PTFE i loko o ka ʻōpala, a laila hoʻomehana ʻia a kaomi ʻia e sinter i ka pauka.Inā makemake ʻia ka extrusion, pono e hoʻohui ʻia nā pūhui hydrocarbon i ka PTFE e kōkua i ka hoʻoulu ʻana a me ka kahe.Pono e hoʻomalu ʻia ka nui o kēia mau pūhui hydrocarbon i loko o kekahi ʻano, inā ʻaʻole maʻalahi ke kumu o ke kaomi extrusion nui a i ʻole nā hemahema huahana.Ma hope o ke ʻano i makemake ʻia, hoʻoneʻe ʻia nā pūhui hydrocarbon e ka hoʻomehana lohi, a laila wela a hoʻopaʻa ʻia e hana i ka huahana hope.
Nā hoʻohana o PTFE
ʻO kekahi o nā hoʻohana nui o ka PTFE ma ke ʻano he uhi.Mai ka pā liʻiliʻi ʻole ma ka home a i ka paia o waho o ka pahu wai, hiki iā ʻoe ke manaʻo i ka hopena kupanaha o kēia uhi.ʻO nā mea hoʻohana ʻē aʻe he sealing tape, wire outer protection, barrel i loko papa, mīkini ʻāpana, labware, a me nā mea ʻē aʻe.
Ka manawa hoʻouna: ʻAukake-29-2022