PTFE bụ ihe bara uru nke ukwuu n'ihi na ọ nwere ngwakọta pụrụ iche nke ihe onwunwe.PTFE bụ chemically inert, weatherable, magburu onwe eletriki mkpuchi, elu okpomọkụ na-eguzogide, a ala ọnụọgụ nke esemokwu na-abụghị nrapado Njirimara.A na-ejikwa tubing na-agbaze eme ihe dị ka mkpuchi mpịakọta na iji chebe akụkụ eletriki ma ọ bụ ihe mejupụtara ya.PTFE nwekwara ike skived ma ọ bụ extruded n'ime teepu na fim na ike ga-eji maka akara na gasket ihe.polymer bụ aha ahia ama ama maka polytetrafluoroethylene (PTFE) mere.
Ụdị nke niile akara ule nke Polymer PTFE (polytetrafluoroethylene) ezi powders, ọ nwere ike ịbụ lubricated na extruded site ọkọlọtọ mado extrusion techniques.Compared na ndị ọzọ akara ule nke PTFE ezi ntụ ntụ,polymer PTFE bụ resin nke mụbara gbazee ike na ala shrinkage.Ọ bụ otu n'ime resin kacha agbanwe agbanwe yana dị mfe nhazi.Ọ kachasị mma maka ngwaahịa ndị nwere mgbatị mbelata nke ọkara na elu.
Ngwaahịa edoziziri nke ọma sitere na polymer PTFE dị mma na-enye ihe ndị dị elu nke ụdị resin fluoropolymer: njigide ihe onwunwe mgbe ọrụ na 260 ° C (500 ° F), ihe bara uru na -240 ° C (-400 ° F), kemịkalụ inertness na ihe fọrọ nke nta ka ọ bụrụ kemịkalụ ụlọ ọrụ niile na ihe mgbaze, yana obere esemokwu na ihe mgbochi mgbochi.Ngwongwo dielectric pụtara ìhè ma kwụsie ike na ugboro na okpomọkụ.Ngwaahịa nwere ike na-agafeghị oke na elu kacha elu elongation.N'ọnọdụ ọkụ, ngwaahịa nke polymer PTFE na-eguzogide mgbanye ma ghara n'onwe ha na-akwalite mgbasa ọkụ.Mgbe ọkụ sitere n'ebe ndị ọzọ na-amụnye ya, onyinye ha na-enye okpomọkụ dị ntakịrị ma nwee obere anwụrụ ọkụ.
A na-akwado PTFE polymer maka extrusion site na ịgwakọta ya na enyemaka extrusion mmiri.A na-agbanye ntụ ntụ mmiri ahụ n'ime slug preform cylindrical ma tinye ya na cylinder nke ụdị ebule.N'okpuru nrụgide dị elu, a na-amanye ihe mejupụtara ahụ site na njedebe njedebe iji mepụta beading, tubing, ma ọ bụ mkpuchi.Enwere ike kpuchie ihe ndị yiri ya, dị ka waya igwe ma ọ bụ eriri okpomọkụ dị elu, site n'inye ha nri site na axis nke gbọmgbọm extruder.Mgbe extrusion gasịrị, ngwaahịa ahụ bụ njupụta dị ala, ma na-ejikọta ya, nhazi fibrous.polymer PTFE 640 na-emekarị n'ihu, na okpomọkụ, n'ime a siri ike resin ngwaahịa, dị ka tubing.Heat na-etinyere na abụọ nzọụkwụ, nke nwere ike rụrụ na-line na extrusion ma ọ bụ iche iche.A ga-ebu ụzọ wepụ mmanụ mmanụ ahụ, na-emekarị site na ikpo ọkụ n'ime oke 100-300°C (212-572°F).Nzọụkwụ na-agbaze na-esote ịgbaze resin na-amaghị nwoke n'elu ebe mgbaze kristal nke ihe dịka 342°C (648°F) wee mepụta ngwaahịa na-enweghị isi, enweghị nchekasị, yana ngwaahịa siri ike nke resin PTFE.Mgbe a na-eme na-akara, usoro ikpo ọkụ na-achọpụta ọsọ ọsọ ọsọ ọsọ.ọ bụ ihe extrusion oke na-emetụta nhọrọ nke resin ọkwa.
Oge nzipu: Mee-04-2018