Site n'echiche nke atọ ihe na-ekpebi Njirimara nke PTFE ngwaahịa - molekụla arọ, crystallinity na voidage, na voidage bụ tumadi emetụta preforming mgbali, na molekụla arọ na crystallinity niile na-agbanwe na dị iche iche sintering ọnọdụ.Ya mere,usoro ịgbakọọnọdụ na-arụ ọrụ dị mkpa na njirimara ikpeazụ nke ngwaahịa dị ka njupụta, ike ike, permeability na n'ibu Njirimara.
Site n'echiche nke atọ ihe na-ekpebi Njirimara nke PTFE ngwaahịa - molekụla arọ, crystallinity na voidage, na voidage bụ tumadi emetụta preforming mgbali, na molekụla arọ na crystallinity niile na-agbanwe na dị iche iche sintering ọnọdụ.Ya mere, ọnọdụ usoro sintering na-arụ ọrụ dị mkpa na njirimara ikpeazụ nke ngwaahịa dị ka njupụta, ike ike, permeability na n'ibu.
Wang ping chọpụtara nausoro nke PTFEemetụtara ọsọ na-arị elu na ọdịda, okpomọkụ na-ekpo ọkụ na oge nkwụsịtụ.Ka ngwaahịa ahụ buru ibu, ka ọ na-agba ọsọ nke ịrị elu na nke dị jụụ, na-adị ogologo oge na-eme ihe.Ọnọdụ okpomọkụ nke resin nkwusioru dị elu karịa nke resin mgbasa ozi.Igwe ọkụ na-ekpo ọkụ nke ngwaahịa ihe dị ọcha dị elu karịa nke ngwaahịa jupụtara.N'ozuzu, ọnụ ọgụgụ nke ikpo ọkụ na-adị ngwa ngwa karịa ọnụego nke jụrụ oyi.N'otu ọkụ ahụ na-ekpo ọkụ, ihe dị ọcha na ngwaahịa na-ejuputa enweghị ike ịgwakọta;Enweghị ike ịgwakọta ngwaahịa ndị nwere ọnọdụ nbibi dị iche iche.Ngwaahịa nke akụrụngwa dị iche iche enweghị ike ịgwakọta.Na-ewere mmepụta nke 3-layer kpụrụ okirikiri efere na dayameta nke 1 m, ọkpụrụkpụ nke 20 mm, okpukpu abụọ oyi akwa dị ka ptfe dị ọcha na etiti oyi akwa dị ka jupụtara ptfe dị ka ihe atụ, na mkpakọ ike, ekwe ike, isi ike na ndị ọzọ n'ibu Njirimara nke Ekwalitela efere dị okirikiri nke teknụzụ a rụpụtara nke ukwuu.
Liu xianlan mụrụ akpụ usoro e ji mara, akpụ usoro na ebu imewe e ji mara PTFE, nyochaa ntụpọ na akpata PTFE ngwaahịa na-emepụta site oyi ịpị na sintering, na-etinye n'ihu ọgwụgwọ ụzọ.PTFE nwere ike na-akpụzi site a dịgasị iche iche nke preforming Filiks, dị ka ịkpụzi, extrusion, hydraulic ịkpụzi, push ịkpụzi na nke abụọ nhazi, na mgbe sintered na ikpeazụ product.PTFE ịkpụzi na-akasị mere nke kwụsịtụrụ resin.Mgbe ọkpụrụkpụ nke mpempe akwụkwọ na-erughị 1.5mm, a na-eji resin gbasaa.Usoro nkà na ụzụ ya: resin - sieve (resin nkwusioru mgbe ị na-agbanye, rụrụ arụ, na 20 mesh mesh sieve) - pịa (PTFE ntụ ntụ na-ebufe ebu n'okpuru nrụgide site na 20 ruo 35 MPa, mgbe ịpịrị compaction akpụ) - sintering (na 370 ~ 380). "C okpomọkụ sintering na sintering ọkụ) - kpụrụ ngwaahịa (n'okpuru free ala n'ime ebu ma ọ bụ mgbe jụrụ imecha imewe dị ka chọrọ site osisi, mkpara, tubes, gaskets na mbukota ngwaahịa, wdg) .. Hydraulic usoro a na-akpọkwa. usoro nha nha ma ọ bụ ịkpụzi rọba na usoro ọrụ ya bụ: tinye akpa rọba n'ime anwụ - jikọọ na mgbapụta mmiri, na-ejuputa mmiri zaa akpa rọba n'ime cylindrical - resin evenly sonyere n'etiti akpa na mpụta ebu na-emechi - na-aga n'ihu na-eji nwayọọ nwayọọ na-abawanye. nrụgide mmiri, mmiri na-ejuputa ruo 12 ~ 13 mpa nrụgide na-ejigide 30 min: mgbe mmiri gasịrị - nkwụsịtụ, nkwụsịtụ, sintering, jụrụ oyi bụ iji ọdịdị na-egbuke egbuke ma dị ọcha.A na-akpọkwa Push tapawa extrusion ịkpụzi, 20 ~ 30 mesh sieve dispersion resin na organic mmiri mmiri (dị ka toluene, mmanụ ala ether, ihe mgbaze mmanụ) ngwakọta 1: 5 mado ngwakọta, preloading n'ime nnukwu mgbidi cylinder billet, banye n'ime compressor cylinder. , kpo oku, na a plunger push ịkpụzi, mgbe ihicha na 360 ~ 380 Celsius C okpomọkụ sintering, mgbe obi jụrụ ngwaahịa nwere ike push tube, mkpanaka, etc.Extrusion ịkpụzi nwere ike kewara abụọ ụdị: ịghasa extrusion na plunger extrusion.A na-agbakwunye resin nke a na-emebu mgbe a gwepịara ya na sifted na cylinder ihe.Site na ntụgharị ntụgharị ma ọ bụ ntụgharị ntụgharị nke plunger, a na-ebuga akụrụngwa ahụ na extruder n'otu oge nchikota.
Wang ping mụrụ usoro nhazi nke ihe ụfụfụ PTFE.A na-eji polytetrafluoroethylene kwụsịtụrụ dị ka akụrụngwa, na ahọpụtara hydrocarbons cyclic aromatic condensed dị ka ihe na-emepụta pore.Mgbe agwakọtachara, a na-emepụta ngwaahịa ndị na-emepụta ihe na sintered.N'oge mmalite nke sintering, a na-anabata usoro ihicha iji mee ka onye na-emepụta ihe na-emepụta pore gbapụ, wee banye na resintering.Enwere ike ịkwadebe ihe ụfụfụ nke nwere dielectric dị iche iche n'ụdị dị iche iche iji mezuo ihe dị iche iche a chọrọ.
Chen xu et al.E mere ule mkpakọ na ule sintering na PTFE, tụlere mmekọrịta dị n'etiti njupụta, ike mkpakọ na modul mkpakọ, wee nyochaa ike mkpakọ nke ụdị n'okpuru usoro sintering dị iche iche, wee nweta nrụgide ịkpụzi kwesịrị ekwesị na usoro ịgbanye.Nsonaazụ gosiri na ike mkpakọ nke PTFE belatara site na mmụba nke nrụgide, na modul mkpakọ na-abawanye site na mmụba nke nrụgide.Nrụgide ịkpụzi bụ 27.5mpa, okpomọkụ na-ekpo ọkụ bụ 380 C, na oge mkpuchi bụ 4h.
Iji merie ọghọm dị na ptfe dị ọcha, dị ka nguzogide abrasion na-adịghị mma na oke mgbasawanye ọkụ ọkụ, Raytheon mụrụ ihe mejupụtara ọla kọpa na ptfe, wee gbasaa ngwa ngwa nke ptfe.The ot-ekpo ọkụ ịpị ịkpụzi nke ptfe e ji ogologo okirikiri, ogbenye arụmọrụ, ala akụkụ ziri ezi na ire ụtọ, mgbe ọkụ ịpị ịkpụzi na ọmụmụ a nwere ole na ole na-arụ ọrụ usoro, obere okirikiri na budata mma n'ibu Njirimara.
Oge nzipu: Mar-14-2017