概述Overview
微孔濾膜根據(jù)所過濾溶劑的化學性質(zhì)正確的選擇濾膜對于達到理想的過濾效果至關(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，使用簡單快捷?？勺鳛橐话懔弦旱某吻濉⒈０策^濾、空氣除菌。廣泛應(yīng)用科研、醫(yī)藥衛(wèi)生、生物化學、食品、能源、微電子工業(yè)、納米技術(shù)、環(huán)境保護等部門。其氣通量大、高微粒截留率、耐溫性好，抗強酸、強堿、有機溶劑和氧化劑，耐老化及不粘、不燃性和無毒、生物相容性好等特點。其材質(zhì)分為有機和無機兩大類，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、細菌以及其他污染物，以達到凈化、分離、濃縮的目的。對于微濾而言，膜的截留特性是以膜的孔徑來表征，通?？讖椒秶?.1~1μm,故微濾膜能對大直徑的菌體、懸浮固體等進行分離。
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：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，化學穩(wěn)定良好，能耐受稀酸、稀堿、醇類、酯類、油類、碳氫化合物、鹵代烴及有機氧化物等多種有機和無機化合物。
用途：電子、微電子、半導體工業(yè)水過濾、組織培養(yǎng)基過濾，藥液過濾、飲料過濾、高純化學制品過濾，水溶液和有機流動相的過濾。
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：膜機械強度高、抗張強度高，具有良好的耐熱性和化學穩(wěn)定性，蛋白吸附率低；具有較強的負靜電性及疏水性；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)用于氣體及蒸汽過濾、高溫液體的過濾；親水性聚偏氟乙烯膜主要應(yīng)用于組織培養(yǎng)基、添加劑等除菌過濾溶劑和化學原料的凈化過濾，試劑的無菌處理，高溫液體的過濾等。
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：孔徑比較均勻，孔隙率高，無介質(zhì)脫落，質(zhì)地薄，阻力小，濾速快，吸附極小，使用價格成本低，但不耐有機溶液和強酸、強堿溶液。
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定，及水質(zhì)污染指數(shù)測定。應(yīng)用于體細胞雜交和線粒互補預測優(yōu)勢研究等科研部門。
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：無任何粘接劑，化學性能穩(wěn)定，柔韌，不易破損，耐高溫，能經(jīng)受高壓滅菌。無毒無味，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)的板框壓濾機濾膜。適用于反滲透膜，超濾膜的支撐及預處理。
聚丙烯膜無毒性，可在醫(yī)藥、化工、食品、飲料等領(lǐng)域廣泛應(yīng)用；具疏水性，對氣體過濾尤佳。
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：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、良好的強度的特點不吸附蛋白和提取物，對樣品無污染。
用途：低蛋白質(zhì)吸附及高藥物相容性，專為生化、檢驗、制藥以及除菌過濾裝置而設(shè)計。
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：較廣泛的化學兼容性，能耐受DMSO,THF,DMF,二氯甲烷，氯仿等強溶劑。應(yīng)用：所有有機溶液的過濾，特別是其它濾膜不能耐受的強溶劑的過濾。
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.