概述Overview
微孔濾膜根據(jù)所過(guò)濾溶劑的化學(xué)性質(zhì)正確的選擇濾膜對(duì)于達(dá)到理想的過(guò)濾效果至關(guān)重要。
在膜分離技術(shù)應(yīng)用中，微孔濾膜是應(yīng)用范圍較廣的一種膜品種，使用簡(jiǎn)單快捷?？勺鳛橐话懔弦旱某吻濉⒈０策^(guò)濾、空氣除菌。廣泛應(yīng)用科研、醫(yī)藥衛(wèi)生、生物化學(xué)、食品、能源、微電子工業(yè)、納米技術(shù)、環(huán)境保護(hù)等部門。其氣通量大、高微粒截留率、耐溫性好，抗強(qiáng)酸、強(qiáng)堿、有機(jī)溶劑和氧化劑，耐老化及不粘、不燃性和無(wú)毒、生物相容性好等特點(diǎn)。其材質(zhì)分為有機(jī)和無(wú)機(jī)兩大類，鑒于微孔濾膜的分離特征，微孔濾膜的應(yīng)用范圍主要是從氣相和液相中截留微粒、細(xì)菌以及其他污染物，以達(dá)到凈化、分離、濃縮的目的。對(duì)于微濾而言，膜的截留特性是以膜的孔徑來(lái)表征，通?？讖椒秶?.1~1μm,故微濾膜能對(duì)大直徑的菌體、懸浮固體等進(jìn)行分離。
The correct selection of flter membrane is crucial for achieving ideal filtration results based on thechemical properties of the solvent beingfitered.
In the application of membrane separation technology,mieroporous filter membrane is a kind ofmembranewith a wide range ofapplications,whichis andquick to ue.Itcan be used for the clarificationof general materials,security filtration,ａnd air sterilization.It is widely used in scientific research,medical health,biochemistry fod energy,mieroelectronics industry,nanotechnology,environmentalprotection and other departments.It hasthe characteristicsoflarge gas permeability,high retention rate,good temperature resistance,strong acid,stron alkali,organic solvents and oxidants,anti-aging andnon-adhesion,non-flammability non-toxicity,ａnd good biocompatibility.Its material is divided intoorganic and inorganic categories.In view of the separation characterisics of microporous filter,theapplicationscope of microporousfilter membrane is mainlyto retain microparticles,bacteria and otherpollutants from gas and liguid phases,so as to achieve the of purification,separation and concentration.For microfiltration,the retention characteristics of the membrane arecharacteized by the pore size ofthe membrane,ａnd the pore size range usually 0.1 to 1 μm,so the microfiltration membrane canseparae large-diameter bacteria,suspended slids,ete

各類微孔濾膜特性Characteristis fvarious mieroporous fier membranes
1、尼龍膜
特點(diǎn)：耐溫性能良好，可耐121℃飽和蒸汽熱壓消毒30min,工作溫度60度以下，化學(xué)穩(wěn)定良好，能耐受稀酸、稀堿、醇類、酯類、油類、碳?xì)浠衔?、鹵代烴及有機(jī)氧化物等多種有機(jī)和無(wú)機(jī)化合物。
用途：電子、微電子、半導(dǎo)體工業(yè)水過(guò)濾、組織培養(yǎng)基過(guò)濾，藥液過(guò)濾、飲料過(guò)濾、高純化學(xué)制品過(guò)濾，水溶液和有機(jī)流動(dòng)相的過(guò)濾。
1.Nylon membrane
Features Good temperature resistance,can withstａnd 121C saturated steam heat pres sterilization for 30min working temperature below 60degres,good chemicalstability can withstａnd dilute acid,dilute alkali,alcohols,esters,oils,hydrobons,halogenated hydrocarbons and organicoxidesａnd ocher organican inorganic compounds.
Uses:Water filration in electronics,microelectronics,semiconductor indutries,culture medium fitration,Filtration of medicinal solutions,beverageflration,high purity chemical productsfiltration,Filtration ofaqueous solutions and organic mobile phases

2、聚偏氟乙烯膜
特點(diǎn)：膜機(jī)械強(qiáng)度高、抗張強(qiáng)度高，具有良好的耐熱性和化學(xué)穩(wěn)定性，蛋白吸附率低；具有較強(qiáng)的負(fù)靜電性及疏水性；具有疏水和親水兩種形式。但不能耐受丙酮，DMSO,THF,DMF,二氯甲烷，氯仿等。

用途：疏水性聚偏氟乙烯膜主要應(yīng)用于氣體及蒸汽過(guò)濾、高溫液體的過(guò)濾；親水性聚偏氟乙烯膜主要應(yīng)用于組織培養(yǎng)基、添加劑等除菌過(guò)濾溶劑和化學(xué)原料的凈化過(guò)濾，試劑的無(wú)菌處理，高溫液體的過(guò)濾等。
2、Polyvinylidene fluoride membrane
Features:The membrane has high mechanical strength,high tensile strength,good heat resistance and stability,low protein adsorption rate it has trongnegative static electrity and hydrophobicity;it has two forms ofhydrophobi and hydrophilie,it cannotwithstａnd acetone,DMSO,THE,DME,dichloro-methane,chloroform,etc.
Uses Hydrophobievinylidene fluoride membrane is mainly used for gas and steam fltration,high-temperature liguidfltration;hydrophilie polyinylidenefluoride membrane is mainlyforsterilization fitration oftisue culture medium,aditives,ete.,purificationfiltration ofsolventsａnd chemical raw materials,asepti treatment ofreagents,high-liguid filtration,etc.

3、混合纖維素酯
特點(diǎn)：孔徑比較均勻，孔隙率高，無(wú)介質(zhì)脫落，質(zhì)地薄，阻力小，濾速快，吸附極小，使用價(jià)格成本低，但不耐有機(jī)溶液和強(qiáng)酸、強(qiáng)堿溶液。
用途：醫(yī)藥工業(yè)需熱壓滅菌的水針劑，大輸液濾除微粒。對(duì)熱敏性藥物(胰島素ATP、酶A等生化制劑)的除菌，用0.45微米的濾膜(或0.22)溶液中微粒及油類不溶物的分析測(cè)定，及水質(zhì)污染指數(shù)測(cè)定。應(yīng)用于體細(xì)胞雜交和線?；パa(bǔ)預(yù)測(cè)優(yōu)勢(shì)研究等科研部門。
3、Mixed cellulose ester
Features Uniform pore size,igh porosity,no medium sheding,thin texture low resistance,fastfilration sped,cxtremely small dsorption,low cost,butnot resistant to organic solvents an strongacids and alkalis.
Uses For water injectablesin the pharmaceuticalindustry that ned tobe strilized byheat pressing,ａnd for the removalof particlesinlarge infusions.For thesterilization of heat drugs (insulin ATP,enzyme A,etc.biochemical preparations),the analysis and determination of particlesａnd oil-insolublesubstances insolutions and the determination of pollutionindex.It is also used in scientific reseach departments such as somatic cellhybridization and mitochondrialcomplementation to predict hybrid vigor.

4、聚丙烯
特點(diǎn)：無(wú)任何粘接劑，化學(xué)性能穩(wěn)定，柔韌，不易破損，耐高溫，能經(jīng)受高壓滅菌。無(wú)毒無(wú)味，耐酸堿。
用途：適用于制作各種粗、精濾器，折疊式濾芯。適用于飲料、醫(yī)藥等行業(yè)的板框壓濾機(jī)濾膜。適用于反滲透膜，超濾膜的支撐及預(yù)處理。
聚丙烯膜無(wú)毒性，可在醫(yī)藥、化工、食品、飲料等領(lǐng)域廣泛應(yīng)用；具疏水性，對(duì)氣體過(guò)濾尤佳。
4、Polypropylene(PP)
Features No any binder,stable chemicalperformance,flexible,not easy to damage,resistant to high temperature,can withstａnd high-presure sterilization.Non-toxic tasteles,resistant to acid and alkali.
Uses Suitable for making various coarse and fine filters,pleatedflter cores.Suitable for the filter membrane of plate frame filter pressin the beverage andpharmaceutical industries.Suitable forthe support and pretreatment of reverse osmosis membrane and ultrafiltration membrane.Polypropylene membrane non-toxic and canbe widey used in pharmaceutical,chemical,food,beverage and other fields it has hydrophobicity,which isespeciallysuitable for gas.

5、聚醚砜
特點(diǎn)：聚醚砜材質(zhì)的微孔濾膜，屬于親水性濾膜，具有高流率、低溶出物、良好的強(qiáng)度的特點(diǎn)不吸附蛋白和提取物，對(duì)樣品無(wú)污染。
用途：低蛋白質(zhì)吸附及高藥物相容性，專為生化、檢驗(yàn)、制藥以及除菌過(guò)濾裝置而設(shè)計(jì)。
5、Polyether sulfone
Features The microfiltration membrane made of ether sulfone material is a bydrophilie fiter membrane,which has the characteristics hig flow rate,low
extractables,ａnd good strength.Itdoes not adsorb proteins and extracts,ａnd does not contaminate samples.
Uses Low proteinorption andhigh drugcompatibility,especilly designed forbiochemical,testing pharmaceutical,ａnd sterilization fltration devices.

6、聚四氟乙烯
特點(diǎn)：較廣泛的化學(xué)兼容性，能耐受DMSO,THF,DMF,二氯甲烷，氯仿等強(qiáng)溶劑。應(yīng)用：所有有機(jī)溶液的過(guò)濾，特別是其它濾膜不能耐受的強(qiáng)溶劑的過(guò)濾。
6、PolytetrafluoroethyleneFeatures Bro chemical compatibility,canwithstａnd strongsolvents such as DMSO.THE,DMF,,chloroform,etc.Application:Filtration ofalforganic solutions,especiallystrong solvents that other filter membranes cannot withstand.