Kedu ihe bụ PFA?
The English aha nkePFAbụ: Polyfluoroalkoxy, aha Chinese bụ: tetrafluoroethylene - perfluorinated alkoxy vinyl ether copolymer (nke a makwaara dị ka: perfluorinated alkylates, soluble polytetrafluoroethylene)PFAresin bụ ihe ọhụrụ gbazee-processable fluoroplastics, PFA, FEP, PTFE chemical Njirimara yiri, ma FEP nwere ike na-eji n'okpuru 200 degrees, PTFE enweghị ike ịgbanye.
1, Specific ike ndọda: 2.13-2.167g / cm3
2, Ịkpụzi shrinkage: 3.1-7.7%
3, ịkpụzi okpomọkụ: 350-400 ℃
4, The agbaze ebe PFA bụ banyere 580F na njupụta bụ 2.13- 2.16g / cc (g / cm3).
Njirimara na isi ojiji nke PFA
A na-akpọkarị PFA dị ka fusible PTFE, yana ihe dị iche iche ya bụ n'elu fluoroplastics, na ojiji ya yiri FEP.A na-ejikarị ya na ụlọ ọrụ semiconductor, yana ọgwụ, kemịkalụ na mgbochi corrosion, ụgbọala na mpaghara ndị ọzọ.
PFA dị n'ụdị pellet maka ịkpụzi na extrusion, ụdị ntụ ntụ maka ịkpụzi na mkpuchi, yana na ngwaahịa emechachara dị ka ihe nkiri, mpempe akwụkwọ, mkpanaka na tubing.Resin PFA ekesara n'ahịa US bụ akara Teflon sitere na DUPOut, akara Neollon sitere na Daikin, akara Hthen sitere na Ansimont, na akara Hostafl sitere na HOechst Celanese.
1, The isi ojiji nkePFA.
①Kwesịrị ekwesị maka mmepụta nke akụkụ ndị na-eguzogide corrosion, akụkụ ndị na-eguzogide ọgwụ, akàrà, akụkụ mkpuchi na akụkụ akụrụngwa ọgwụ.
②Igwe ọkụ dị elu na mkpuchi eriri, akụrụngwa mgbochi corrosion, ihe mkpuchi, mgbapụta mgbapụta na valvụ, na akpa kemịkalụ.
2, akpụ arụmọrụ
①Ihe kristal, obere mmịpụta mmiri.Enwere ike ịhazi ya ka ọ bụrụ ngwaahịa site na usoro nhazi thermoplastic a na-emekarị.
②Ntugharị na-adịghị mma, dị nnọọ mfe ire ere, ire ere na-emepụta gas na-emebi emebi.Okpomọkụ ịkpụzi ekwesịghị ịfe ogo 475, a ga-ekpo ọkụ na-ekpo ọkụ na 150-200 degrees, na usoro ịwụsa ahụ kwesịrị inwe obere nguzogide ihe onwunwe.
③.translucent granules, injection na extrusion ịkpụzi.Ịkpụzi okpomọkụ 350-400 degrees, n'elu 475 degrees dị mfe ime ka discoloration ma ọ bụ afụ.Ma mara na ọ ga-esi ike karị ịkwatu.
④N'ihi na ihe a wụrụ awụ nwere mmetụta na-emebi emebi na metal, mmepụta ogologo oge, ihe ebu ahụ chọrọ ọgwụgwọ chromium plating.
Ịrụ ọrụ ihe
1. PFA bụ a copolymer nke a obere ego nke perfluoropropyl perfluorovinyl ether na polytetrafluoroethylene.A na-eme ka njikọ nke mgbaze dịkwuo mma, viscosity nke ngwọta na-ebelata, ebe arụmọrụ adịghị agbanwe agbanwe ma e jiri ya tụnyere PTFE.Enwere ike ịhazi resin a ozugbo ka ọ bụrụ ngwaahịa site na usoro ịkpụzi thermoplastic nkịtị.
2, ogologo oge ojiji okpomọkụ - 80 - 260 degrees, nwere magburu onwe kemịkalụ na-eguzogide, corrosion iguzogide niile kemịkalụ, kasị ala ọnụ ọgụgụ nke esemokwu na plastic, e nwere ezigbo eletriki Njirimara, ya eletriki mkpuchi adịghị emetụta okpomọkụ, "eze plastik" a na-akpọ.
3, nguzogide kemịkalụ ya na PTFE yiri ya, ka mma karịa vinylidene fluoride.
4, ya na-akpụ akpụ nguzogide na mkpakọ ike dị mma karịa PTFE, elu tensile ike, elongation ruo 100-300%.Ezi dielectric Njirimara, magburu onwe radieshon iguzogide.
5, Non-egbu egbu: physiologically inert, nwere ike ịkụnye n'ime ahụ mmadụ.
Oge nzipu: Nov-18-2022