Ua kapa ʻia ʻo PTFE "ke aliʻi o nā plastics".Ua hoʻomaka ʻo Roy Planck, ka makuakāne o fluororesin, e aʻo i nā mea pani a Freon ma DuPont i ʻAmelika Hui Pū ʻIa i ka makahiki 1936. Ua hōʻiliʻili lākou i kahi hapa o ka tetrafluoroethylene a mālama i loko o nā hue kila, e hoʻomākaukau ana no ka hoʻokolohua aʻe i ka lā aʻe, akā i ka wā e hoʻemi ai ke kaomi. ua wehe ʻia ka cylinder i ka lā aʻe, ʻaʻohe kahe o ke kinoea.Ua manaʻo lākou ua kahe, akā i ke kaupaona ʻana i ka pahu, ʻike lākou ʻaʻole i emi ke kaumaha o ka puʻu.Wehe ae la lakou i ka omole kila a loaa ka nui o ka pauda keokeo, he polytetrafluoroethylene (teflon).
Ua kapa ʻia ʻo PTFE "ke aliʻi o nā plastics".Ua hoʻomaka ʻo Roy Planck, ka makuakāne o fluororesin, e aʻo i nā mea pani a Freon ma DuPont i ʻAmelika Hui Pū ʻIa i ka makahiki 1936. Ua hōʻiliʻili lākou i kahi hapa o ka tetrafluoroethylene a mālama i loko o nā hue kila, e hoʻomākaukau ana no ka hoʻokolohua aʻe i ka lā aʻe, akā i ka wā e hoʻemi ai ke kaomi. ua wehe ʻia ka cylinder i ka lā aʻe, ʻaʻohe kahe o ke kinoea.Ua manaʻo lākou ua kahe, akā i ke kaupaona ʻana i ka pahu, ʻike lākou ʻaʻole i emi ke kaumaha o ka puʻu.Wehe ae la lakou i ka omole kila a loaa ka nui o ka pauda keokeo, he polytetrafluoroethylene (teflon).
Nā ʻano a me nā waiwai:
He palupalu nā mea mechanical o PTFE.Loaʻa i ka PTFE nā ʻano hana maikaʻi loa:
- Kūleʻa wela kiʻekiʻe:ka mahana hoʻohana lōʻihi o 200 ~ 260 degere;
- Palena wela haʻahaʻa:palupalu ma ka -100 degere;
- ʻO ke kūpaʻa ʻino:kū'ē i ka aqua regia a me nā mea hoʻoheheʻe organik a pau;
- Kū'ē i ka lewa:ke ola ʻelemakule maikaʻi loa i loko o ka plastic;
- Lubrication kiʻekiʻe:ka liʻiliʻi liʻiliʻi o ka friction (0.04) i loko o nā plastics;
- ʻAʻole ʻeleʻele:ka haʻahaʻa haʻahaʻa o ka ʻili i nā mea paʻa me ka hoʻopili ʻole ʻana i kekahi mea;
- ʻAʻohe mea ʻawaʻawa:me ka inertia physiological a me nā waiwai uila maikaʻi loa, he mea hoʻokaʻawale C-Class maikaʻi loa, hiki i ka papa mānoanoa nūpepa ke pale i ka volta kiʻekiʻe o 1500V.Ua ʻoi aku ka pahee ma mua o ka hau.
He liʻiliʻi loa ka ʻāpana friction o PTFE, ʻo 1/5 wale nō o ka polyethylene, kahi hiʻohiʻona nui o ka ili perfluorocarbon.A no ka haʻahaʻa loa o ka ikaika inter molecular o ke kaulahao fluorine-carbon, ʻaʻole viscous ka PTFE.Mālama ʻo PTFE i nā waiwai mechanical maikaʻi loa ma kahi ākea ākea o -196 a 260 ° C. ʻO kekahi o nā hiʻohiʻona perfluorocarbon polymers ʻaʻole lākou brittle i nā haʻahaʻa haʻahaʻa.He kiʻekiʻe kiʻekiʻe ka PTFE o 2.14-2.20g / cm3, me ka aneane 'ole wai absorption, a me ka equilibrium wai absorption rate emi iho ma mua o 0.01%.ʻO ka PTFE kahi polymer palupalu a nāwaliwali.He li'ili'i ka ikaika umekaumaha ma waena o nā macromolecules, a he li'ili'i ka 'o'ole'a, 'o'ole'a, a me ka ikaika.E deform ma lalo o ke kaumaha lōʻihi.
ʻIke ʻenehana
Hoʻokuʻu polymerization:i loko o ka polymerization kettle, ka wai i hoʻohana ʻia ma ke ʻano he medium, ammonium persulfate i hoʻohana ʻia ma ke ʻano he mea hoʻomaka, a dilute hydrochloric acid i hoʻohana ʻia ma ke ʻano he activator, polymerized ka tetrafluoroethylene ma ke kaomi o 0.5-2 MPa a me 40-45 ℃ e loaʻa ai nā ʻāpana keʻokeʻo. e kiʻi i ka pauka polytetrafluoroethylene me nā ʻāpana ʻokoʻa ma hope o ka mashing, wili, a me ka maloʻo.
Hoʻopuehu polymerization:Hoʻohui ʻia kahi mea liʻiliʻi o ka dispersant (ammonium perfluorooctanoate) a me ka stabilizer (fluorocarbon compound) e hoʻomaka i ka polymerization me kahi catalyst redox.Hoʻokaʻawale ʻia ka polymerization i ke kaomi kiʻekiʻe a me ke kaomi haʻahaʻa.ʻO ke kaomi kiʻekiʻe he 2 MPa a me 25 ℃, a ʻo ka haʻahaʻa haʻahaʻa he 0.6-0.7 MPa a me 0-38 ℃.Hoʻokumuʻia ka polytetrafluoroethylene polymerization solution e ka dispersion polymerization, a loaʻa ka resin dispersion e ka coagulation, maloʻo, a me ka screening.Hoʻoheheʻe ʻia ka emulsion a hoʻopaʻa ʻia ma o ka ipu hao e hana ai i kahi wai i hoʻopaʻa ʻia, ʻo ia hoʻi, kahi emulsion i hoʻopuehu ʻia.
ʻOi aku ka maikaʻi o ka hana ʻana o ka dispersion resin a me ka hana huahana.ʻO ka Polytetrafluoroethylene he mea pale a maikaʻi ʻole ka wai.He hopena koʻikoʻi kona nui o kona ʻāpana a me kona ʻano ʻāpana i ka hoʻoheheʻe ʻana o ka wai, kona ʻano hana a me nā waiwai huahana.ʻO ka ʻokoʻa o ka maikaʻi o nā resins i hoʻokuʻu ʻia a me nā resins i hoʻopuehu ʻia ma muli o ko lākou nui ʻāpana, ka hāʻawi ʻana i ka nui o ka ʻāpana, a me ka morphology particle.ʻO ka mea mua he millimeter ka nui, aʻo ka mea hope he submicron nui (250-350nm). Hiki ke hoʻoheheʻeʻia a hanaʻia nā resins i hoʻokuʻuʻia, akā,ʻaʻole hiki ke hoʻokuʻuʻia i loko o keʻano paʻi,ʻoiai hiki ke hoʻohanaʻia nā dispersed resins no ka hoʻopiliʻana i ka extrusion.ʻOi aku ka kiʻekiʻe o ke kaumaha o ka molecular a me ka crystallinity o PTFE dispersing resins ma mua o nā resins i hoʻokuʻu ʻia, me ka crystallinity a hiki i 96-98%, a ʻo ke ola luhi ʻana he 2300 mau manawa ʻoi aku ka lōʻihi o nā resins i hoʻokuʻu ʻia.
ʻO ka nui o ka nui o ka resin dispersed i hana ʻia e ka emulsion polymerization he liʻiliʻi, kūpono ka hāʻawi ʻana i ka nui o ka nui, a hiki ke hoʻomalu ʻia ka morphology particle, no laila me ka hana hana maikaʻi a me ka hana huahana.
I kēia manawa, ma kahi o ʻelua hapakolu o nā resins PTFE e hana ʻia e ke ʻano hoʻokuʻu a me ka hapakolu ma ke ʻano dispersion.
I ka makahiki 2019, aia he 12 mau hui hana PTFE kūloko me ka nui o ka nui o 140,000 tons / makahiki, ʻoi aku ma mua o 40% o ka mana hana honua.Eia nō naʻe, pono e hoʻomaopopo ʻia ʻo ka mana hana PTFE o Kina ka nui o ka injection molding grade middle and low-end products.
ʻO ka mana hana PTFE o Kina he mea koʻikoʻi.ʻO nā ʻoihana ʻeono kiʻekiʻe o ka ʻoihana e pili ana i ka 83% o ka nui o ka mana hana.ʻO ka alakaʻi o ka ʻoihana, ʻo Dongyue Group, e noho ana ma kahi o ka hapakolu o ka māhele mākeke.
I ka makahiki 2019, ua manaʻo ʻia ʻo ka huahana PTFE kūloko ma kahi o 90,000 tons, ʻo ka hapa nui o ka hoʻoheheʻe ʻana i ka papa waena a me nā huahana haʻahaʻa, a he haʻahaʻa loa ka nui o ka PTFE resin localization kiʻekiʻe, e hilinaʻi nui ana i nā imports. he mea hoʻopuka pūnaewele o PTFE.I ka makahiki 2004, ua ʻoi aku ka nui o ka nui o ka PTFE o Kina i ka nui o ka lawe ʻana mai, a ua hoʻonui nui ʻia kona hiki mai 2010 a i 2012, a ua hoʻonui ʻia ka nui o ka lawe ʻana i kēlā me kēia makahiki.I ka makahiki 2010, ua ʻoi aku ka nui o ka nui o ka PTFE o Kina i ka 20,000 tons no ka manawa mua a noho ma kahi o 20,000 tons / makahiki a hiki i kēia manawa. -hana hoʻololi i nā huahana e hoʻokō i nā pono o nā ʻoihana o lalo no nā huahana PTFE kiʻekiʻe.I kēia manawa, hoʻolako nui ʻia ka PTFE kiʻekiʻe o Kina e nā hui ʻē aʻe e like meʻo Daikinma Iapana,DuPontma ʻAmelika Hui Pū ʻIa.
Nā noi nui o 5G
Me ka hoʻomau mau ʻana o ka ʻenehana kamaʻilio 5G, ke piʻi nei ka noi no ke alapine kiʻekiʻe a me nā mea dielectric haʻahaʻa.Loaʻa i nā Fluoropolymers nā waiwai dielectric haʻahaʻa haʻahaʻa a me nā kumu poho haʻahaʻa ma lalo o nā kūlana kiʻekiʻe.Hiki iā lākou ke hāʻawi i nā alapine ultra-kiʻekiʻe a me ka wikiwiki kiʻekiʻe no nā kikowaena data, nā hale kiaʻi hoʻouna hōʻailona, a me nā lako uila pilikino.No laila, me ka wikiwiki o 5G, ke hoʻonui nei ka noi o ka mākeke no nā fluoropolymers kiʻekiʻe.
ʻO nā noi nui ʻo 5G mau kelepona wikiwiki wikiwiki, semiconductor, PCB a me nā ʻāpana antenna.
ʻO ke kelepona kiʻekiʻe a me ka wikiwiki wikiwiki
Hoʻomaikaʻi ʻo Teflon resin i ka hana uila o nā ʻāpana insulation cable a me nā ʻaʻahu a hāʻawi iā lākou i ka palekana ahi like ʻole.He mea koʻikoʻi kēia mau hiʻohiʻona no nā ʻōnaehana uwila (e like me ka High-speed cable) no nā pūnaewele ʻāpana kūloko (LAN), nā kikowaena data, a me nā noi kelepona hana kiʻekiʻe.No laila, e hoʻohana ʻia nā fluoropolymers ma nā laina hoʻouna kiʻekiʻe me nā hana he nui, ka nui o ka lawe ʻana i ka ʻikepili, a me ka wehewehe kiʻekiʻe.
Hana semiconductor
Hoʻopili ʻo 5G i ka hoʻomohala ʻana i ka ʻoihana semiconductor a hoʻololi i nā pono o ka ʻoihana.He kuleana koʻikoʻi ka PTFE polymers i nā kaʻina hana semiconductor.
ʻO ka PCB a me nā ʻāpana antenna
I ka wā 5G, e hilinaʻi nui ʻia nā papa kaapuni paʻi (PCB) i nā mea fluoropolymer hana kiʻekiʻe, hiki ke hoʻomaikaʻi i ka maikaʻi o ka hoʻouna ʻana 5G.Hoʻohana ʻia ka PTFE no nā ʻāpana prepreg i nā PCB a me nā ʻōnaehana antenna e hoʻokō i nā pilina kiʻekiʻe.
Ka manawa hoʻouna: Feb-26-2019