Kev loj hlob zoo ntawm cov cuab yeej kho mob, kev lag luam biomedical thiab kev noj qab haus huv hauv 15 xyoo dhau los tseem tsis tau muaj txiaj ntsig txawm tias cov khoom siv xws li fluoropolymer tau ntsib qhov kev thov nyuaj rau cov khoom tshiab thiab cov txheej txheem.
Feem ntau, fluoropolymer tau hloov pauv lwm cov yas hauv cov ntawv kho mob vim lawv muaj peev xwm ua tau raws li lub cev thiab biocompatibility yuav tsum tau ntawm cov tshuaj tiam tom ntej thiab cov khoom siv.Fluoropolymers ua tau raws li qhov tshwj xeeb ntawm kev ua tau zoo hauv cov ntawv thov no.Cov no muaj xws li biocompatibility, lubricity, sterilization, tshuaj inertness, ib tug dav siv kub ntau yam, uas tsis muaj binding rau txheej txheem cov cuab yeej, high-purity nrog tsawg extractables, dielectric zog, thiab USP Class VI certification.
Cov tsev neeg ntawm cov muaj fluoropolymers uas ua tau raws li cov kev xav tau saum toj no suav nrog qib ntawm PTFE, FEP, PFA thiab PVDF resin los ntawm ntau tus neeg tsim khoom.PTFE (polymer) muaj keeb kwm cog qoob loo zoo ntawm cov ntaub so ntswg hloov vim nws biocompatibility thiab inertness.Resin thiab downstream cov khoom lag luam txuas ntxiv teb rau cov kev xav tau tshiab ua haujlwm los ntawm kev hloov kho kom tsim nyog rau cov khoom siv hluav taws xob thiab kev teeb tsa saum npoo ntawm cov khoom, feem.
Lub biocompatibility ntawm ib qho polymer yog ib qho tseem ceeb ntawm cov khoom siv kho mob xws li catheters, bio-containment hlab ntsha, syringes thiab sutures.PTFE, FEP thiab PVDF yog cov khoom siv biocompatible zoo, thiab lawv lubricity thiab tshuaj tiv thaiv ua rau lawv cov khoom xaiv rau cov khoom xws li multi lumen tubing thiab lwm yam uas yog siv rau hauv cov txheej txheem minimally invasive.Piv txwv li Multi lumen fluoropolymer catheter tubing tso cai rau cov kws kho mob ua ntau yam txheej txheem siv tib lub catheter.
Fluoropolymers, tshwj xeeb tshaj yog PTFE (polymer) thiab PVDF yog dav siv nyob rau hauv microporous daim nyias nyias.Membranes, muaj ntau lab tus pores qhov loj ntawm 0.01 txog 10 microns ua cov lim dej rau cov khoom thiab cov kab mob hauv cov kua dej tseem ceeb.PTFE thiab PVDF yog ob peb cov polymers siv rau lim membranes.Qhov chaw ntawm cov ntaub ntawv polymers tuaj yeem hloov kho kom xa cov khoom pom tshwj xeeb thiab tuaj yeem ua tau hydrophobic (dej repelling) thiab oleophobic (roj, hnyav, tsis tshua muaj siab nro kua repelling).PVDF daim nyias nyias kuj tseem tuaj yeem hloov kho qhov chaw los ua hydrophilic (dej hlub) rau kev tshem tawm cov kab mob hauv kev tsim cov tshuaj tua kab mob thiab cov tshuaj tiv thaiv monoclonal.PVDF blotting membranes yog qhov tshwj xeeb zoo rau kev tiv thaiv keeb kwm yav dhau los qis (sab hnub poob blot tsom), nrog rau kev tsom xam amino acid thiab protein sequencing.
Cov khoom siv, xws li cov twj tso kua mis, tubing, fittings siv nrog rau cov khoom siv kho mob yuav tsum ua kom tau raws li qhov ua tau zoo thiab cov kev qhia tshwj xeeb.Cov khoom siv hauv kev sib cuag ncaj qha nrog cov kua dej yog tsim los ntawm fluoropolymer xws li PTFE thiab PVDF.Piv txwv li, cov twj ntsuas ntsuas xws li cov twj diaphragm yuav tsum tau ua kom raug thiab rov ua dua, qee zaum rau cov kua dej tshuaj lom neeg.Ob leeg PTFE thiab PVDF tubing yog siv rau hauv kev tsim kho ntawm cov twj no vim li no.
PVDF, txawm hais tias muaj kev txwv qis dua li PTFE (polymer), muaj lub zog tensile siab thiab zoo heev permeation tsis kam rau ntau cov kua.Nws muaj qhov ntom ntom (1.78 g / cc) dua li lwm cov fluoropolymer (kwv yees li 2.18 g / cc).Vim tias qhov kub thiab txias qis dua li lwm cov fluoropolymer, nws yooj yim dua ua rau cov khoom xws li cov kav dej, cov raj, txhaj tshuaj molded qhov chaw thiab cov yeeb yaj kiab.Nws muaj qhov zoo ntawm qhov ntev thiab UV ruaj khov thiab yog li nrhiav kev siv tshiab hauv aerospace, sensors, biotechnology thiab robotics kev lag luam.
Post lub sij hawm: Aug-06-2018