PTFE na PFA Butterfly Valve Ihe Ọdịiche

(Nkọwa nkọwa) PTFE EPDM urukurubụba oche valve

Teflon PTFE na-mara dị ka polytetrafluoroethylene.Teflon PFA a na-mara dị ka soluble polytetrafluoroethylene.Ọtụtụ valvụ ịzụrụ bụ nnọọ doro anya nke ka mma corrosion iguzogide nru ububa valves iji PTFE na PFA? Kedu uru na ọghọm dị na nke ọ bụla? Ọdịiche dị na nguzogide okpomọkụ, nke dị ọnụ ala?
Dị iche na ọdịdị
1.PFA: copolymer nke obere perfluoropropyl perfluorovinyl ether na polytetrafluoroethylene.2.PTFE: ngwakọta polymer mepụtara site na polymerization nke tetrafluoroethylene.
Njirimara dị iche iche
Njirimara PFA
(1) kristal ihe onwunwe, obere mmiri absorption.Ọ nwere ike hazie n'ime ngwaahịa site thermoplastic nhazi ụzọ.
([2) pịrị pofility, dị mfe ịkpụ na corrosive gas na-emepụta n'oge obibi. Ibepu okpomoku adighi agabiga 45 Celsius C, ebu a na-ewe iwe na 150 - 200 Celsius C, na ngbasa usoro enweghi ike iguzogide ihe a na-eme.
(3 trasucent pelles, ijection molding and extrusion molding.Molding temperature is 350-400C, 475 ℃ na n'elu dị mfe na-akpataiscoloration ma ọ bụ blistering. Lezienụ anya na ike nke demolding.

(4) N'ihi corrosion mmetụta nke gbazere ihe na metal, ogologo oge mmepụta chọrọ chrome plating na ebu.PTFE e ji mara.

Njirimara PTFE

(1) High okpomọkụ na-eguzogide: ogologo - ojiji okpomọkụ 200 ~ 260 ℃;

(2) Obere okpomọkụ na-eguzogide: dị nro na - 100 ℃;

(3) Nguzogide corrosion: na-eguzogide aqua regia na ihe mgbaze organic niile;

(4) Nguzogide ihu igwe: ndụ ịka nká kacha mma nke plastik;
(5) mmanu mmanu: na obere ọnụọgụ nke esemokwu (0.04) n'etiti plastik;
(6) Ndị na-adịghị - nnyapade: Ọ nwere esemokwu elu kacha nta n'etiti ihe siri ike na-akwadoghị ihe ọ bụla.
Nnukwu ihe dị iche bụ na PFA dị mfe ịhazi ma dị oke ọnụ karịa PTFE, mana na omume PTFE nwere ihe mgbochi corrosion ka mma na-eguzogidekwa okpomọkụ dị elu.
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