pvdf 中文意思是什麼

First, rubber sponge balls are mainly synthesized with silicone rubber. in addition, tubular membrane is dominatingly made of polyvinylidene fluoride ( pvdf ) with the integrated production technology and the membrane is tested with self - made leak hunting device

首先，以硅橡膠為主要原料合成生產了海綿橡膠球；另外，以聚偏氟乙烯（ pvdf ）為主要原料用管式膜一體化技術生產了管式膜，並通過自行設計的檢漏裝置對管式膜進行檢測。

The maximum of the piezoelectric constant d33 is 68pc / n when the volume fraction of pzt, pvdf, pan is 0. 55, 0. 45, and 0. 05 respectively. finally, when the n, a, p are 6, 0. 6, 0. 3 respectively, the calculation value can agree well with the experimental data

而且經過理論計算與比較，當以下三個參量取下列值時，即陶瓷顆粒形狀因子n = 5 、極化率= 0 . 6 、結構因子q = 0 . 3時，實驗數據與理論計算吻合較好。

But there is a main question that pvdf does not be in p phase with higher piezoelectric property, but be in other phases with lower or without piezoelectric property, thus, which can not improve distinctly piezoelectric constant d33, reduce notably dielectric spoilage ( tg5 ) and raise remarkably mechanical coupling factor ( kp ) of 0 - 3 pzt / pvdf piezoelectric composite, so these will restrict its development and application. in this paper, 0 - 3 pzt / pvdf piezoelectric composite will be prepared by room pressing - solidity, high - temperature - pressing and room - pressing techniques respectively

由於這個壓電復合材料體系存在一個主要問題? pvdf在0 ? 3型pzt / pvdf壓電復合材料中通常不是以具有較強壓電性的相晶態形式呈現，多是以其它的相態存在，不能有效地提高0 ? 3型pzt / pvdf壓電復合材料的壓電常數d _ （ 33 ） 、降低介電損耗tg和增大機電耦合系數kp等壓電和介電性能，從而嚴重地制約它的發展和應用。

Though costly, polyvinylidene fluoride ( pvdf ) has excellent thermal and chemical stability

聚偏氟乙烯（ pvdf ）雖然價格昂貴，但熱穩定性和化學穩定性很好。

A lot of experiments have been done in the process of exploiture soft packaging li - ion battery about how to choice the rational arts and crafts. the content include : how to deal with the collector, add how much pvdf in the material, how long the material need to stirring and the right viscidity, how much condubtivity agent the electrode need, what theckness is best, choice different collectors, the degree of dryness of the electrode, theckness of pressed model, how much electrolyte will be added, placement how long after added the electrolyte, system of formation how to influnce the battery, in formation the battery need or not need preesure from outside, how to vacuumize and the optimize matching positive pole and negative pole. with these practice make sure the parameter of the positive pole should less than 90 m ; according to different vacuumize order the conduc - tivity agent in anode will be 5mass % and 9mass %, respectively, and in cathode the data is 2mass % ; every 100mah added to 0. 4 ml electrolyte ; before formation the battery should be placement 8 hours and the system of formation must be less than 0. 01c before the voltage reach to 3. 0v ; should press in outside when battery in formation ; to these batteries which capacity more than 350mah the vacuum time not excess 15s ; the optimize matching positive pole and negative pole between 2. 10 : 1 and 2. 15 : 1. finally make out the battery which cycling performance and security are all very well

液態軟包裝鋰離子電池的研究主要是對關鍵工藝進行了優化設計，具體包括:集流體的處理、 pvdf的加入量、漿料攪拌時間和粘度、導電劑的加入量、電極膜的厚度、不同集流體的選擇、電極膜的乾燥程度、壓型的厚度、電解液的加入量、注入電解液后靜置時間的長短、化成制度的影響、化成時電池所具有的壓力影響、抽真空的處理、正負極活性物質的匹配。最後確定出液態軟包裝鋰離子電池最佳工藝參數:正極膜的厚度小於90 m ;根據化成時不同抽真空順序，確定正極膜中的導電劑的加入量分別為5mass %和9mass % ;負極膜中導電劑的加入量為2mass % ;電解液的加入量為每100mah添加0 . 4ml ;化成前電池的靜置時間應當大於8h ;電池在3 . 0v之前採用小於0 . 01c的化成制度;在化成過程中應當施加一定的外部壓力;對於350mah的電池抽真空的延時不應大於15s ;而正負極活性物質的質量比應當在2 . 1 : 1 2 . 15 : 1之間。

Generally, fluorine - carbon resin ( pvdf ) coating is spray - painted on the surface of fluorine - carbon aluminum single sheet, featuring extremely good antiweathering, anti - corrosiveness and anti - pulverization properties

氟碳鋁單板的表面一般噴塗氟碳樹脂（ pvdf ）塗層，具有極其優良的耐侯性、耐腐蝕性和抗粉化性。

The disperse degree of the ceramic can greatly affect uniformity of the composite, which limit the poling voltage and affect the piezoelectricity. in this paper, the relationships among constitutes, microstructures, dielectric and piezoelectric properties were calculated by employing the banno unit cell mode ; pzt ceramic were synthesized by the hydrothermal method and the appropriate solution was selected according the adsorption of pvdf on the ceramic particle surface ; then, relationships between the disperse degree and the fabrication process were studied. base on these, the pzt / pvdf composites intermingled some pan were prepared and the microstructures were investigated

論文首先利用bannounitcell模型，計算了pzt pvdf壓電復合材料的組成、結構、與其壓電和介電等性能之間的關系；針對壓電復合材料存在的均勻分散性差的缺點，選用水熱法制備的粒度均勻的pzt陶瓷粉末，並採用溶液混和法與聚合物pvdf進行分散復合，重點研究了不同工藝條件下陶瓷的均勻分散性及其與材料微觀結構之間的關系。

2801 and lbg was used as polymer matrix because of their different hfp ratio, dbp was used as plasticizer. the films were made by bellcore method. structure, crystallinity, liquid uptake and conductivity of the films with different ratio of pvdf dbp sio2 was determined

本文用hfp含量不同的2801和lbg為基體， dbp為增塑劑，採用bellcore方法制膜，得到了聚合物電解質的結構、結晶度、吸液量和電導率隨sio _ 2 、增塑劑含量、聚合物結晶度的變化規律，並對納米無機粒子改性聚合物電解質的機理進行了一些探討。

In this article, the bellcore method was used to prepare polymer electrolyte membrane based on pvdf - hfp, and polymer electrolyte membranes under different conditions were prepared by changing sorts of solvents 、 ratio of dbp and solvent. effects of ratio of plasticizer and solvent on the liquid uptake 、 sem 、 mechanism capability 、 ionic conductivity 、 electrochemical stability window of polymer electrolyte membrane were also studied. through optimizing the preparation technics, the integrated effects of additives such as pc 、 ec 、 dbp and nanophase al2o3 on the ionic conductivity 、 liquid uptake were studied

本文以聚偏氟乙烯-六氟丙烯共聚物pvdf - hfp為基質，採用bellcore制膜法制備了pvdf - hfp聚合物電解質膜，通過改變增塑劑dbp的含量、溶劑的種類及溶劑的含量制備了不同條件下的聚合物電解質膜，分別研究了增塑劑含量、溶劑含量等對聚合物電解質膜的吸液率、表面形貌、機械性能、離子電導率、電化學穩定窗口等的影響;對制備工藝進行了優化，研究了各種添加劑如pc 、 ec 、 dbp及納米al2o3對聚合物電解質膜的離子電導率、吸液率等性能的綜合影響。

Pamps / pvdf hollow - fiber gel composite membrane also has environment responsibilities

Pamps pvdf中空纖維凝膠復合膜同樣具有環境響應的智能性。

Pamps / pvdf hollow - fiber gel composite membrane was prepared through interfacial polymerization

採用界面聚合法制備pamps pvdf中空纖維凝膠復合膜。

First, the treatment with strong alkali to pvdf hollow - fiber membrane was carried out to create c = c bonds on the membrane surface

先對pvdf中空纖維膜進行堿處理，使基膜表面生成碳碳雙鍵。

First, the treatment with strong alkali and strong oxidant to pvdf hollow - fiber membrane was carried out to activate the surface

首先對pvdf中空纖維膜進行強堿及強氧化劑處理，使基膜表面活化。

The bsa rejection increases as / decreases. the hydrophilicity of the surface of pvdf hollow - fiber membranes has been greatly improved and the antifouling ability increased obviously

Pvdf基膜表面引入pamps長鏈分子或者pamps凝膠層，親水性大為改善，抗污染能力明顯提高。

The preparation of composite membranes in this dissertation can optimize the separation function and improve the antifouling ability of the membranes while not change the properties of the pvdf radicle membranes. the pvdf - g - pamps hollow - fiber grafted composite membrane was prepared through surface chemical grafting

本文採用制備中空纖維復合膜的方法，在不改變pvdf基膜材料本體性能的基礎上，發揮基膜材料和分離功能層膜材料的優點，得到高分離功能、高透過通量的智能復合膜。

Poly ( vinylidene fluoride ) ( pvdf ) hollow - fiber porous membranes have excellent performances. but adsorption fouling will still be created on the hydrophobic surface when the membranes are used in aqueous solution separation systems. this can cause the decrease of the permeate flux and separation efficiency, thus the applications of the membranes are limited

聚偏氟乙烯（ pvdf ）中空纖維多孔膜具有優良的性能，然而由於其表面的疏水性，在用於水相體系分離時，仍會產生吸附污染，導致膜通量和分離效率下降，應用范圍受到限制。

Its production of anti - corrosive pumps ? particularly membrane pneumatic pumps for chemical products ( made with various materials : pp, pvdf, ectfe, stainless steel and aluminium ) is increasingly appreciated in the largest sectors of the italian and foreign industry : chemicals, textiles, foods, ceramic and electronics

其產品為防腐蝕泵? ?特別為義大利和國外工業日益增長的最大部分（或者市場份額） ：化工、紡織、食品、化工、陶瓷和電力產品提供薄膜氣動泵（材質為pp ， pvdf ， ectfe ，不銹鋼和鋁） 。

Fourth, the advanced surface analysis technique - x ray photoelectron spectrum is employed to study the adsorption of soluble - starch on the pvdf membrane. then we test by using xps combined with sem the original sample, the fouled sample and the washed sample with rubber sponge balls

第四，採用x射線光電子能譜（ xps ）技術分析了可溶性澱粉在聚偏氟乙烯膜表面的吸附，並將xps技術與電子顯微鏡技術相結合，對原始樣品、污染樣品和海綿橡膠球清洗樣品進行了測試和分析。

Study on the piezoelectric properties of pzt pvdf piezoelectric composite

壓電復合材料壓電性能研究

The addition of pmma will reduce the crystallinity of blends and improve of the uptake of liquid electrolyte ( 260 % ) and the ion conductivity ( ims / cm ). at the same time the pvdf - hfp maintains the mechanical strength of blends film acting as polymer framework

Pmma的加入可以降低共混體系的結晶度，提高共混物的電解液吸收能力（ 260 ）和離子電導率（ 1ms / cm ） ；同時pvdf - hfp起到骨架作用，使共混物膜具有足夠的機械強度。