Phenolic Resin

Kapa ʻia ʻo Phenolic resinbakelite, i ʻike ʻia ʻo ka pauka bakelite.ʻO ka mea mua he mea ʻike ʻole (keʻokeʻo) a melemele-ʻulaʻula paha, hoʻohui pinepine ka mākeke i nā mea kala e ʻike ʻia ka ʻulaʻula, melemele, ʻeleʻele, ʻōmaʻomaʻo, ʻeleʻele, uliuli a me nā waihoʻoluʻu ʻē aʻe, a he granular a pauka.Kū'ē i ka waika nāwaliwali a me ka alkali palupalu, e decompose i ka hihia o ka waika ikaika a corrode i ka hihia o ka alkali ikaika.Hiki ke hoʻoheheʻe ʻia i ka acetone, ka wai, ka waiʻona a me nā mea hoʻoheheʻe organik ʻē aʻe.Loaʻa iā ia ma ka polycondensation o phenolic aldehyde a i ʻole nā ​​​​mea hoʻohui.ʻO ka resin phenolic paʻa he melemele, māmā, amorphous blocky mea, ʻulaʻula ma muli o ka phenol manuahi, ʻo ka awelika kikoʻī kikoʻī o ka mea ma kahi o 1.7, hiki ke hoʻoheheʻe ʻia i loko o ka waiʻona, hiki ʻole ke hoʻoheheʻe ʻia i ka wai, paʻa i ka wai, nāwaliwali ka wai a me ka hopena alkali nāwaliwali.He resin ia i hana ʻia e ka polycondensation o phenol a me formaldehyde ma lalo o nā kūlana catalyst, neutralization a me ka holoi ʻana me ka wai.Ma muli o ke koho ʻana o ka catalyst, hiki ke hoʻokaʻawale ʻia i ʻelua ʻano: thermosetting a me thermoplastic.ʻO ka resin phenolic maikaʻi ke kūpaʻa waika, nā waiwai mechanical a me ka pale wela, a hoʻohana nui ʻia i ka ʻenekini anti-corrosion, adhesives, flame retardant material, grinding wheel manufacturing a me nā ʻoihana ʻē aʻe.

ʻO ka pauka Phenolic resin kahi ʻano o ka thermoplastic phenolic resin i hoʻokumu ʻia e ka polycondensation o ka phenol a me ka formaldehyde i loko o ke ʻano waikawa.Hiki ke hoʻoheheʻe ʻia i loko o ka ethanol a lilo i thermosetting ma ka hoʻohui ʻana i ka 6-15% urotropine.Hiki ke hoʻoheheʻe ʻia ma 150°C a loaʻa kekahi ikaika mechanical.a me nā waiwai hoʻokaʻawale uila.

ʻO ka hiʻohiʻona nui o ka resin phenolic ka pale wela kiʻekiʻe, a hiki iā ia ke mālama i kona kūpaʻa a me ke kūpaʻa dimensional a hiki i nā wela kiʻekiʻe.No laila, hoʻohana ʻia nā resins phenolic i nā māla wela kiʻekiʻe, e like me nā mea refractory, friction material, adhesives a me nā ʻoihana foundry.

ʻO kahi hoʻohana koʻikoʻi o ka resin phenolic he mea hoʻopaʻa.ʻO nā resins Phenolic he mea maʻalahi a kūpono me nā ʻano mea hoʻopiha organik a me nā mea hoʻopihapiha.ʻO nā resins phenolic i hoʻolālā maikaʻi ʻia e pulu wikiwiki loa.A ma hope o ka hoʻopili ʻana, hiki iā ia ke hāʻawi i ka ikaika mechanical i koi ʻia, ka pale wela a me nā waiwai uila no nā mea hana abrasive, refractory material, friction material a me bakelite.

Hoʻohana ʻia ka wai-soluble phenolic resins a i ʻole ka waiʻona-soluble phenolic resins e hoʻomoe i ka pepa, ka lole pulupulu, ke aniani, ka asbestos a me nā mea like ʻē aʻe e hāʻawi iā lākou i ka ikaika mechanical, nā waiwai uila, a me nā mea ʻē aʻe. nā diski a me ka pepa kānana no nā kānana kaʻa.

Phenolic resin waiwai:

Hana wela kiʻekiʻe: ʻO ka hiʻohiʻona koʻikoʻi o ka resin phenolic ʻo ke kūpaʻa wela kiʻekiʻe, ʻoiai i nā mahana kiʻekiʻe loa, hiki iā ia ke mālama i kona kūpaʻa a me ke kūpaʻa dimensional.

Ka ikaika paʻa: ʻO kahi noi nui o ka resin phenolic he mea hoʻopili.ʻO nā resins Phenolic he mea maʻalahi a kūpono me nā ʻano mea hoʻopiha organik a me nā mea hoʻopihapiha.

ʻO ke koena kalapona kiʻekiʻe: Ma lalo o nā kūlana kinoea inert me kahi mahana ma kahi o 1000°ʻO C, nā phenolic resins e hoʻohua i nā koena kalapona kiʻekiʻe, kahi kūpono i ka mālama ʻana i ka paʻa o nā resins phenolic.

ʻO ka uahi haʻahaʻa a me ka haʻahaʻa haʻahaʻa: Ke hoʻohālikelike ʻia me nā ʻōnaehana resin ʻē aʻe, ʻo ka ʻōnaehana resin phenolic ka maikaʻi o ka uahi haʻahaʻa a me ka haʻahaʻa haʻahaʻa.I ka hihia o ka puhi ʻana, ʻo ka ʻōnaehana resin phenolic i hana ʻia e ka ʻepekema ʻepekema e hoʻoheheʻe lohi e hana i ka hydrogen, hydrocarbons, wai a me nā kalapona ʻokikene.ʻO ka uahi i hana ʻia i ka wā o ka decomposition he liʻiliʻi, a he haʻahaʻa loa ka ʻona.

Ke kū'ē kemika: Hiki i ka resin phenolic pili kea ke pale i ka palaho o kekahi mea kemika.E like me ka ʻaila, ka ʻaila, ka waiʻona, ka glycol, ka momona a me nā hydrocarbons like ʻole.

Hoʻomaʻamaʻa wela: E hoʻonui ka mālama wela i ka mahana hoʻololi aniani o ka resin i hoʻōla ʻia, hiki ke hoʻomaikaʻi hou i nā waiwai o ka resin.

Ka hikiwawe: ʻO ka pahu phenolic kahi ʻano o ka plastic foam i loaʻa mai e ka hū phenolic resin.Ke hoʻohālikelike ʻia me ka polystyrene foam, polyvinyl chloride foam, polyurethane foam a me nā mea ʻē aʻe i hoʻomalu i ka mākeke i ka wā mua, loaʻa iā ia kahi hana maikaʻi loa ma ke ʻano o ka retardancy ahi.