The Poly Vinylidene Fluoridemembrane was chosen to produce ultrasonic in transducer due to its higher sensitivity and better flexibility than other piezoelectric material.At the mean time,harmonic analysis to the PVDF film vibration was performed using ANSYS.The results show that the PVDF membrane can produce an ultrasound with afixed resonance frequency.

對各種壓電材料進行比較分析久热综合，得到聚偏二氟乙烯膜比其它材料具有更高靈敏度和更好柔韌*欧美一级片在线免费观看网站，通過對其振動特*進行有限元分析国产真实激情在线观看电影视频，得到PVDF膜在固定頻率具有振幅最大值国产综合久久精品综合AV无码，可知PVDF膜更適合做聲頻定向超聲波傳感器的振動膜來進行聲音傳播的方向控制黄色免费在线国产。

The tool of Discover in the international popular software Materials Studio and the advanced COMPASS force field are adopted to simulate mechanical properties of PETN and PETN-based PBX at different temperatures, which is coated with four fluorine-containing polymers.

選擇聚偏二氟乙烯欧美XXXX欧美、聚三氟氯乙烯污黄色片99精品人人操人人插、F2311和F2314作為粘結(jié)劑九九精品热全在这，對PETN及其與這4種含氟聚合物組成的PBX最近中文高清在线视频，用國際上流行的Materials Studio軟件中的DISCOVER模塊一级A片黄片免费，以先進的COMPASS力場，主要模擬研究了PETN基PBX在不同溫度下的力學性能91在线精品免费一区欧美直播。

This paper introduced physical and chemical properties of polyvinylidene fluoride,with good thermoplasticity,which provided diversitied usages.

主要介紹聚偏二氟乙烯———一種具有多種用途的熱塑性氟塑料多人伦交性欧美在线观看，由于獨特的結(jié)晶形態(tài)和介電性能而具有良好的耐化學腐蝕性无遮拦av。

The catalytic property of polyvinylidene chloride polyethylene polyamine palladium complex (PVDC-DETA-Pd,PVDC-TETA-Pd,PVDC-TEPA-Pd)for Suzuki reaction of sodium tetraphenylborate with iodobenzene were examined under microwave heating.

本論文研究了聚偏二氯乙烯多乙烯多胺負載鈀催化劑和PVDC二苯胺鈀催化劑的制備国产一级A片a爱视频、表征及其在微波條件下對Suzuki反應(yīng)的催化性能免费黄色网站视。1国产精选91自拍原创视频。

Polyvinylidene fluoride is applied as sensor to monitoring the vibration of stayed cables ,and digital signal processor is applied to realize the FFT transform of signal ,the tension can be calculated.

聚偏二氟乙烯傳感器通過監(jiān)測應(yīng)變得到拉索的振動信號黄片视频免费看，采用數(shù)字信號處理芯片實現(xiàn)振動信號的快速傅立葉變換欧美最猛性XXXXX潮喷视频，利用變換得到的振動頻率計算出拉索的張力色色ww，實現(xiàn)斜拉索張力的在線測量欧美黄色视频电影免费观看。

Polyvinylidene Fluoride PVDF homopolymer conforming to ASTM D-3222, Type I, Grade 2, is a tough, abrasion-resistant fluorocarbon material that has a design stress of 1,360 psi at 73°F and a maximum service temperature of 280°F.

聚偏二氟乙烯PVDF均聚物国产福利在线观看精品免费91啪，符合ASTM D-3222黄网站在线永久免费播放，類別118岁以上禁止看的污视频在线观看，等級2標準，是一種堅固的aa视频网站在线、耐磨的碳氟化合物材料免费一级AV浏览器在线观看，在22oC下，其設(shè)計應(yīng)力為1黄色在线视频平台a，360 psi欧美一级AA大片片免费看视频，最高工作溫度達到137oC。

It is the most common form of PVDF and the most thermodynamically stable.

它是聚偏二氟乙烯的最常見晶型skyandhome.com，也是熱力學最穩(wěn)定的晶型中文字幕乱码亚洲无线码三区。

According to the geometries of the conformers and the statistical weight parameters, we can construct six-state statistical weight matrices.

在此基礎(chǔ)上，應(yīng)用計算得到的模型分子的幾何構(gòu)型與統(tǒng)計權(quán)重參數(shù)狼友视频网址一网址二，分別構(gòu)建針對－CH2-和－CCl2-中心的聚偏二氯乙烯的6態(tài)旋轉(zhuǎn)異構(gòu)態(tài)模型草逼性爱视频日本女优。

objective: to prepare the molecularly imprinted composite membranes with propofol as template.methods: with the ultraviolet light and initiator, template molecular propofol, functional monomer methacrylate and crosslinking agent ethylenegly-coldimethacrylate formed molecularly imprinted composite membrane through polymerization on the surface of polyvinyli-dene fluoride microporous membrane.inspection of the combination of template molecule and functional monomer, characterization of the membrane surface morphology with scanning electron microscopy.results: the morphology of composite membranes was well.propofol bonded to methylacrylic acid with hydrogen bond.conclusion: the method of ultraviolet light-struck is feasible for preparation of molecularly imprinted composite membranes with propofol as template.

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The ultrathin multilayer film of poly (diallyldimethylammonium chloride) and polyvinylidene fluoride has been prepared by the layer-by-layer static self-assembly method. The PVDF/PDDA multilayer film with the thickness ranging from about 30nm to 150 nm the thickness of each layer is about 9nm.

聚二烯丙基二甲基氯化銨和極化處理后的聚偏氟乙烯復(fù)合超薄膜是通過層與層的靜電自組裝方法制備的国产精品黄网在线观看，厚度約30～150 nm，每層膜厚度約為9 nm。

polyvinylidene fluoride：聚偏二氟乙烯

斜拉索是斜拉橋的主要承載部件.斜拉橋橋跨結(jié)構(gòu)的重量和橋上活載絕大部分或全部通過斜拉索傳遞到索塔上.實時監(jiān)測分布于大橋上的橋索張力變化,對于了解斜拉橋的健康狀態(tài),確保斜拉橋的安全是至關(guān)重要的.采用聚偏二氟乙烯(Polyvinylidene Fluoride)通過監(jiān)測應(yīng)變得到拉索的振動信號,

nitrocellulose：硝酸纖維素

成為亞洲地區(qū)首家以美國高新技術(shù)毛片AAAAAAA免费视频、設(shè)備和原料大量生產(chǎn)微孔濾膜及微孔膜折疊濾芯的廠商,專業(yè)從事液體和氣體過濾. 本公司主要產(chǎn)品有多種過濾材質(zhì)[改良聚醚砜(Modified PES)性生爱视频免费网站、聚偏二氟乙烯(PVDF)、聚丙烯(PP)和硝酸纖維素(Nitrocellulose)]和系列...

pen：聚萘二酸乙二醇酯

除目前廣泛應(yīng)用的聚偏氯乙烯(PVDC)AV无码午夜福利一区二区三区、乙烯A几黄色视频、乙烯醇共聚物(EVOH)外,近年來,開發(fā)環(huán)保適性材料的舉動促使聚 乙烯醇(PVA)中文av在线网站、聚萘二酸乙二醇酯(PEN)、共聚酰胺(MXD6)欧美chengren在线、硅或鋁氧化物蒸薄膜(軟玻璃)、納米無機材料等的發(fā)展更 引人注目.

saran：莎綸

102 莎綸(Saran)聚偏氯乙烯纖維,或稱為薩冉樹脂. 這是含有80%以上的氯乙烯叉的長鏈聚合物,由氯乙烯国产AV美女久久、二氯乙烯共聚而成. 它具有熱塑性一级亚州视频欧美视频、拒水性久久AV无码精品人妻系、回彈性、耐磨91看片婬黄大片涩爱、堅韌、撇塵土水漬污染等特性. 103 嫘縈(Rayon)即粘膠纖維.

fluorocarbon resin：氟碳樹脂

( 氟碳樹脂(Fluorocarbon Resin)主要包含四大類聚合物,分別是"聚一氯三氟乙烯"、"聚1.1-二氯代乙烯"2021年最新黄色网站、"四氟乙烯-六氧化丙烯"以及"聚四氟乙烯",而用來做釣線的材料大概是"聚偏二氟乙烯",英文簡稱為PVDF).