Kev hloov pauv ntawm Polytetrafluoroethylene (PTFE) - los ntawm cov khoom lag luam tshwj xeeb siv rau hauv cov ntawv thov muaj nqis siab mus rau qhov xav tau tseem ceeb tau maj mam heev.
Txawm li cas los xij, dhau ob xyoo caum dhau los no kev siv PTFE zoo li tau hla dhau qhov loj heev, uas ua rau nws muaj peev xwm ua lag luam tau ntau dua 200 yam kev lag luam, kev siv khoom thiab kev kho mob. Thiab thaum cov ntawv, cov pas nrig, cov txheej txheem thiab cov khoom sib xyaw ua ke feem ntau ntawm kev ua lag luam rau cov khoom PTFE, PTFE raj thiab PTFE hose tam sim no tshwm sim ua thaj chaw tseem ceeb.
PTFE raj siv
Kev siv ntawmPTFE rajtau kis mus thoob plaws ntau yam kev siv xws li tsheb, tshuaj lom neeg, hluav taws xob thiab kev kho mob. Rooj 1 qhia txog cov khoom tseem ceeb uas piav qhia txog kev ua tau ntau yam ntawm PTFE raj, thaum daim duab 1 qhia nws siv hauv ntau qhov chaw.
Hauv cov ntawv thov tsheb, lub peev xwm ntawm PTFE los tiv taus qhov kub ntau tshaj 250 ° C ua rau nws yog tus neeg sib tw zoo tshaj plaws rau kev hloov pauv kua dej kub.
Hauv kev siv kho mob,PTFE rajmuaj neeg xav tau ntau vim nws lubricity thiab tshuaj inertness. Cov catheters siv PTFE raj tuaj yeem ntxig rau hauv tib neeg lub cev yam tsis ntshai kev ua xua lossis kev sib txhuam nrog ib qho ntawm lub cev.
Hauv cov ntawv thov tshuaj lom neeg - suav nrog cov chaw kuaj mob - PTFE yog qhov hloov pauv zoo tagnrho rau iav vim nws qhov tsis muaj zog thiab ruaj khov.
Hauv cov ntawv thov hluav taws xob, cov khoom siv dielectric zoo heev ntawm PTFE nkauj xwb ua rau nws zoo rau kev rwb thaiv cov cables hluav taws xob siab.
Hom PTFE raj
Nyob ntawm daim ntawv thov, PTFE raj yog muab faib ua peb pawg dav - txhua tus txhais los ntawm lub raj txoj kab uas hla thiab phab ntsa thickness (saib Rooj 2).
Txawm tias nyob hauv pawg, PTFE raj qiv nws tus kheej rau ntau yam kev hloov pauv, txhua tus tso cai rau daim ntawv thov sib txawv (saib Rooj 3):
PTFE raj hauv kev lag luam khoom siv kho mob
Feem ntau, cov raj spaghetti me me yog siv rau hauv kev siv kho mob. Kev siv PTFE hauv thaj chaw no yog tsom mus rau ob yam khoom tseem ceeb: lubricity thiab biocompatibility. Fluoropolymers qhia tau tias muaj lubricity zoo heev piv rau lwm cov yas. PTFE yog cov polymer uas muaj lubricity tshaj plaws, nrog rau qhov sib txhuam ntawm 0.1, ua raws li fluorinated ethylene propylene (FEP), nrog 0.2. Ob lub polymers no sawv cev rau feem ntau ntawm txhua lub raj fluoropolymer siv rau hauv cov khoom siv kho mob.
Qhov kev sib haum xeeb ntawm cov polymer siv rau hauv cov khoom siv kho mob yog qhov txhawj xeeb pom tseeb. PTFE ua tau zoo hauv thaj chaw no thiab muaj keeb kwm ntev ntawm kev siv hauv vivo. Cov fluoropolymers kho mob yuav tsum ua tau raws li USP Class VI thiab ISO 10993 qhov yuav tsum tau kuaj. Tau kawg, kev ua kom huv si kuj yog ib qho tseem ceeb.
Tau 18 xyoo dhau los, Besteflon pheej tsom mus rau kev tsim cov PTFE Tubes thiab PTFE hose. Ua cov thawj coj hauv thaj chaw ntawm kev tsim cov fluoroplastics, peb nrhiav kev pabcuam zoo tshaj plaws thiab kev pabcuam tom qab muag. Yog tias koj xav pib kho cov PTFE raj rau koj daim ntawv thov tshwj xeeb, thov koj xav tiv tauj peb!
Lub sijhawm tshaj tawm: Lub Rau Hli-12-2023