He aha ka mea PVDF?
ʻO ka Polyvinylidene Fluoride (PVDF) kahi mea hana kiʻekiʻe i hoʻohana nui ʻia i nā ʻoihana kemika a me nā ʻoihana hana, a ua makemake ʻia no kona kūpaʻa kemika maikaʻi loa, nā waiwai uila a me ka ikaika mechanical. Ma kēia ʻatikala, e loiloi mākou i nā kikoʻī he aha ka PVDF, kona mau waiwai, nā noi a me nā kaʻina hana e kōkua iā ʻoe e hoʻomaopopo pono i nā pono o kēia mea.
ʻO ka mea mua, nā hiʻohiʻona kumu o PVDF
ʻO ka PVDF he semi-crystalline thermoplastic fluoropolymer, nui ka polymerised mai vinylidene fluoride (VDF) monomer. Ma muli o ke kiʻekiʻe o ka electronegativity o ka fluorine atom a me ka ikaika o ka paʻa CF, hōʻike ʻo PVDF i kēia mau waiwai:

Ke kū'ē kemika: He kū'ē loa ka PVDF i ka hapa nui o nā waikawa, nā alkalis, nā paʻakai a me nā mea hoʻoheheʻe, kahi e paʻa ai a kūpaʻa i ka corrosion i ka ʻoihana kemika i ka manawa.

Ka ikaika o ka mīkini: PVDF ka ikaika tensile maikaʻi loa a me ka hopena o ka hopena, hiki iā ia ke mālama i kona kūpaʻa ʻana i nā wahi paʻakikī.

Nā waiwai uila: Ma muli o kāna mau dielectric haʻahaʻa a me nā waiwai insulating kiʻekiʻe, hoʻohana nui ʻia ʻo PVDF i nā māla uila a me nā uila, ʻoi aku hoʻi ma ke ʻano he mea papa insulating no nā uea a me nā kaula.

ʻO ke kūpaʻa wela: PVDF maikaʻi ke kūpaʻa wela a hiki ke hoʻohana ʻia i kahi ākea o nā mahana, a hiki ke mālama mau i kona mau kino kino i ka pae wela o -40 ° C a 150 ° C.

ʻO ka lua, ke kaʻina hana o PVDF
Loaʻa ka hana ʻana o PVDF ma o ka polymerization radical manuahi, maʻamau e ka polymerization solution a i ʻole polymerization suspension. I ke kaʻina hana polymerization, ua polymerised ʻia nā monomer VDF i ka polymer PVDF ma lalo o nā kūlana hoʻohālikelike. Ma hope iho, ma o ke kaʻina hana ma hope o ka mālama ʻana, me ka hoʻomaʻemaʻe, extrusion a me ka granulation, ka hoʻokumu hope ʻana o nā huahana PVDF me nā waiwai kino kikoʻī.
ʻO ke kolu, nā wahi noi nui o PVDF
Ua hoʻohana nui ʻia ʻo PVDF i nā ʻoihana he nui ma muli o kāna hana maikaʻi loa:

ʻOihana Kemika: Hoʻohana maʻamau ʻia ʻo PVDF i ka hana ʻana i nā ʻano mea like ʻole, nā paipu a me nā valves, ʻoi aku ka nui o ka manawa e pili ana i nā kemika corrosive.

ʻOihana hana: Hoʻohana ʻia ʻo PVDF i ka hana ʻana i nā mea hoʻonaninani kiʻekiʻe, e like me ka fluorocarbon coatings, i hoʻohana ʻia no ka pale ʻana i nā paia o waho o nā hale, a hiki ke mālama i ka nani o nā hale no ka manawa lōʻihi ma muli o kāna mau UV a me ka ʻelemakule.

ʻOihana uila a me ka uila: Hoʻohana nui ʻia ʻo PVDF i ka hana ʻana i nā kaula, nā mea hoʻohui a me nā diaphragms pākaukau lithium ma muli o kona hoʻokaʻawale uila maikaʻi loa a me ke kūpaʻa wela.

ʻOihana mālama wai: Hoʻohana ʻia nā mea membrane PVDF i ke kahua o ka mālama wai, ʻoi aku hoʻi i ka ultrafiltration a me nā membrane nanofiltration, i makemake ʻia no ko lākou kūpaʻa kiʻekiʻe kiʻekiʻe a me ka pololei kānana kiʻekiʻe.

ʻO ka ʻehā, nā manaʻo mākeke a me nā pilikia o PVDF
Me ka wikiwiki o kaʻoihana a me ka piʻiʻana o ka noi no nā mea hana kiʻekiʻe, ke ulu wikiwiki nei ka mākeke PVDF. Ke kū nei ka noi o PVDF i kekahi mau pilikia ma muli o kāna mau pilikia pili i ka fluoride. No laila, ʻo ka hoʻomaikaʻi ʻana i ke kaʻina hana a me ka hōʻemi ʻana i ka hopena o ke kaiapuni o PVDF e lilo i kī i ka hoʻomohala e hiki mai ana.
Hōʻuluʻulu manaʻo
He aha ka mea PVDF? Ma o ka nānā ʻana i luna, hiki iā mākou ke ʻike ʻo PVDF kahi mea fluoropolymer hana kiʻekiʻe me kahi ākea o nā manaʻo noi. ʻO kona kūpaʻa kemika maikaʻi loa, ka ikaika mechanical, nā waiwai uila a me ke kūpaʻa wela e hana nui ia i nā hana he nui. Me ka hoʻomaikaʻi ʻana i nā koi palekana kaiapuni, e kū pū ana ka hana a me ka noi ʻana o PVDF i nā pilikia a me nā manawa hou. ʻO ka hoʻomaopopo a me ka haku ʻana i nā waiwai a me nā noi o PVDF hiki ke hāʻawi i ke kākoʻo koʻikoʻi no ka hana hou a me ka hoʻomohala ʻana i nā ʻoihana pili.