PFA, ma ọ bụ Perfluoroalkoxy, bụ ụdị fluoropolymer.O nwere ihe ndị yiri ya dị ka polytetrafluoroethylene (PTFE), nke bụ ụdị polymer a ma ama.PFA tụụrụ ime site na DuPont Co. ma nye aha ika polymer PFA.Ihe dị iche na ya na resins nke PTFE bụ na PFA nwere ike ịgbaze.A na-enweta nke a site n'ịkpụzi ịgba ọgwụ mgbochi ọrịa yana usoro ịhịa aka n'ahụ.
Polytetrafluoroethylene (PTFE), bụkwa fluoropolymer sịntetik nke tetrafluoroethylene.DuPont Co. bụ onye na-emepụta PTFE kacha mara amara, nke, dịka ekwuru na mbụ, bụ ihe ọtụtụ ndị mmadụ maara dị ka polymer.N'ịwulite site na nchọpụta mberede nke Roy Plunkett, PTFE bụ ihe dị elu dị arọ nke nwere carbon na fluorine.N'ezie, ọ bụ fluorocarbon siri ike.Ọ bụ hydrophobic, nke pụtara na mmiri ma ọ bụ ihe nwere mmiri nwere ike ime ya mmiri n'ihi njirimara fluorocarbon nke ibelata ndị agha mgbasa na London.Ya mere, PTFE nwere oke esemokwu dị ala mgbe ọ na-akpakọrịta na ihe siri ike.Nke a bụ n'ihi nnukwu electronegativity nke fluorine.Ndị ọzọ karịa polymer, PTFE na-akpọkarị Fluon na Syncolon.
olytetrafluoroethylene (PTFE) bụ fluoropolymer sịntetik nke tetrafluoroethylene nke nwere ọtụtụ ngwa.
Perfluoroalkoxy alkanes (PFA) bụ copolymer nke hexafluoropropylene na perfluoroethers. Otu ụdị PFA a ma ama bụ polymer PFA.
PFA nwere ihe ndị yiri ya na PTFE, ọ bụ ezie na nnukwu ọdịiche dị n'etiti PTFE na PFA bụ na PFA na-agbaze.A na-enweta nke a site n'ịkpụzi ịgba ọgwụ mgbochi ọrịa yana usoro ịhịa aka n'ahụ.
A na-ejikarị PTFE eme ihe dị ka mkpuchi na-adịghị mma maka pans na ọtụtụ ihe ọgbara ọhụrụ nke cookware.A na-ejikarị PTFE eme ihe na arịa na ọkpọkọ maka ijikwa kemịkalụ na-emeghachi omume na nke na-emebi emebi.Nke a bụ n'ihi na ọ nwere ihe ndị na-adịghị emeghachi omume.Ngwa ọzọ bara uru nke PTFE dị ka mmanu mmanu.Ejiri ya n'ụzọ dị otú a, PTFE na-enyere aka ibelata esemokwu n'ime igwe, belata "eyi na akwa," ma melite oriri ike.
A na-ejikarị PFA eme ihe maka akụrụngwa ụlọ nyocha plastik n'ihi oke nguzogide ya na mwakpo kemịkalụ, nghọta anya na ngbanwe n'ozuzu ya.A na-ejikwa PFA dị ka tubing maka ijikwa usoro dị oke egwu ma ọ bụ nke na-emebi emebi.Ngwa ndị ọzọ maka PFA dị ka mpempe akwụkwọ maka akụrụngwa kemịkal.N'ihi ihe onwunwe ya, ọ nwere ike ime ka ojiji nke carbon steel fibers plastics (FRPs) dị ka ihe na-anọchi anya alloys na ọla dị oke ọnụ.
A na-ekpughekarị ngwaọrụ ndị a na-eji maka nha ọkwa n'ebe ikuku tankị siri ike.Mgbasa ozi ike ike, dị ka acid, nwere ike imebi ihe nyocha na akụkụ na kọntaktị na ngwaahịa ahụ.Viscous na ngwaahịa nnyapade bụ ihe ịma aka nha ọkwa ndị ọzọ.Ndị a nwere ike ime ka mwulite n'akụkụ mmiri mmiri nke mgbasa ozi ma na-abawanye ohere nke imetụta nha.Akụkụ ndị nwere mmiri mmiri kpuchie na ihe PTFE ma ọ bụ PFA na-enye ezigbo nguzogide ngwaahịa ndị na-emebi emebi ma bụrụ ihe ngwọta dị mma maka izere mmetọ sitere na nrụpụta ngwaahịa.
Ngwaahịa sitere na mmiri nwere ike ibute condensation na antenna, nke nwere ike imetụta nha ọkwa.N'ihi akụrụngwa hydrophobic nke PTFE na PFA, nha ahụ agaghị emetụta ya ma ọ bụrụ na ụmụ irighiri mmiri na-abawanye na akụkụ antenna.
PTFE, ịbụ fluorocarbon siri ike, bụ hydrophobic, nke pụtara na ihe ndị nwere mmiri anaghị adị mfe weta ya.Ọzọkwa, PTFE nwere oke esemokwu dị ala mgbe ọ na-akpakọrịta na ihe siri ike.
PFA dị elu karịa PTFE n'ihe gbasara mgbanwe karịsịa ma a bịa n'ihe gbasara ngwa tubing.N'aka nke ọzọ, ndụ mgbanwe PFA (ya bụ, ikike ịtachi obi mpịakọta ugboro ugboro) dị ala karịa PTFE.
PTFE dị ntakịrị na-eguzogide okpomọkụ karịa PFA.PFA na-emetụta karịa site na mmịnye mmiri na ihu igwe mana ọ dị elu karịa PTFE ma a bịa na nguzogide ịgba nnu.
PFA nwere otu dielectric mgbe niile dị ka PTFE nakwa dị ka a yiri nnọọ dissipation ihe;ma PFA nwere ike dielectric ugboro atọ ruo anọ karịa PTFE.
Oge nzipu: Nov-10-2020