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天上天

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[求助] 請(qǐng)各蟲友幫忙把下面的中文翻譯成英文（要正規(guī)的翻譯）

本論文首先合成導(dǎo)電率較高的聚苯胺、聚吡咯及酞菁銅，然后在前人對(duì)吸聲材料研究的基礎(chǔ)上，根據(jù)不同的成膜工藝，采用自制的導(dǎo)電聚合物制備了電導(dǎo)率率較高的導(dǎo)電高分子薄膜吸聲材料，同時(shí)研究了對(duì)該吸聲材料的吸聲性能的不同影響因素。
采用懸浮聚合、分散聚合及乳液聚合等方法，根據(jù)導(dǎo)電聚合物分子結(jié)構(gòu)設(shè)計(jì)，以考慮聚合物的電導(dǎo)率及其溶解性為前提，制備了一系列不同結(jié)構(gòu)和粒徑的具有很大共軛性的導(dǎo)電高分子聚合物，如聚苯胺、聚吡咯、羧基銅酞菁等。然后采用環(huán)氧樹脂和聚酰胺樹脂作為吸聲材料的基體約束材料，對(duì)制得的導(dǎo)電高分子微粒進(jìn)行了組裝以及聲學(xué)性能研究。并分析了石墨在聚苯胺中的共混對(duì)吸聲材料的影響，同時(shí)通過(guò)優(yōu)化工藝得到穩(wěn)定的條件，制備出了導(dǎo)電聚合物與石墨的復(fù)合吸聲材料。
本文分析了混合時(shí)間、電導(dǎo)率、表面微觀結(jié)構(gòu)，材料厚度、測(cè)試方法等因素對(duì)吸聲材料吸聲性能的影響。經(jīng)實(shí)驗(yàn)驗(yàn)證，導(dǎo)電高分子聚合物的電導(dǎo)率、材料厚度、材料的結(jié)構(gòu)及性質(zhì)對(duì)材料的吸聲性能會(huì)產(chǎn)生明顯的影響。這說(shuō)明材料的導(dǎo)電性、厚度、微觀結(jié)構(gòu)等因素與材料的聲學(xué)性質(zhì)密切相關(guān)，通過(guò)控制導(dǎo)電高分子顆粒與石墨的量制備導(dǎo)電性能高的薄膜材料來(lái)對(duì)吸聲性能的研究是完全可行。一定條件下，實(shí)現(xiàn)高分子微粒的特性阻抗和空隙中空氣的聲阻抗的匹配可有效的提高材料吸聲性能。
在上述工作的基礎(chǔ)上，結(jié)合石墨制備了導(dǎo)電高分子薄膜吸聲材料，研究結(jié)果表明，具有柔性結(jié)構(gòu)的導(dǎo)電高分子組成的薄膜吸聲材料具有寬吸聲頻帶和強(qiáng)吸聲能力，在聲波125Hz～4000Hz頻率范圍內(nèi)的平均吸聲系數(shù)大于0.5，最大吸聲系數(shù)達(dá)到0.95，尤其是解決了一般吸聲材料低頻段吸聲效果差的缺陷。該薄膜吸聲材料的材質(zhì)輕且薄，厚度只有0.1~0.6毫米、每平方米重量只有200～500 克。

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1樓 2011-05-19 14:55:36

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liqi9673

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【答案】應(yīng)助回帖

天上天(金幣+200, 翻譯EPI+1): 2011-05-19 19:20:19

This paper synthetizes higher conductive rate polyaniline, polypyrrole and PcCu first,then on the basis of the experienced research,according to different film technology,using self-made conductive polymers synthetizes conductive macromolecule sound-absorbing material.Meanwhile different factors of
material was researched.
In suspension polymerization, dispersion polymerization and emulsion polymerization methods,according to the molecular structure design of conductive polymers,the prerequisite is that the solubility and conductivity of polymer,synthetizes conjugate and conductive polymer with a series of different structure and grain size,such as polyaniline, polypyrrole, carboxyl PcCu and so on.Then uses epoxy resin and polyamide resin as the matrix constraint materials of sound-absorbing material .On preparation of conductive polymer particles on the assembling and acoustic properties research.And analyzes the influence of graphite to blend sound-absorbing material in polyaniline.At the same time, through optimizing the process ,under stability conditions,prepares of conductive polymers and graphite composite sound-absorbing material.This paper analyzes the influence of sound-absorbing material and performance through the mixing time, conductivity, surface microstructure, material thickness, test method.Experiments showed that electrical conductivity of conductive polymer , material thickness, material structure and material sound-absorbing properties will produce significant influence.This shows the conductivity, thickness, microcosmic structure are closely related to material factors such as the acoustic properties.Through controlling the number of conductive polymer particles and graphite，it is completely feasible to prepare high electric conductivity film to the study of sound-absorbing properties.Certain conditions, realizing the polymer particles characteristic impedance and gap of air acoustic impedance matching can effectively improve the material sound-absorbing performance.On the basis of the above work, preparated of conductive polymer film sound-absorbing material combining with graphite.The result shows that the conductive polymer with flexible structure is composed of film sound-absorbing material with wide and the strong absorption ability.In 125Hz ~ 4000Hz average absorption coefficient exceeds 0.5, maximum acoustic absorption coefficients reaches 0.95,especially solved defects which sound-absorbing material is poor in low frequency range.This sound-absorbing film quality is light and thin, thickness is only 0.1 ~ 0.6 millimeter, every square metre weighs only 200 ~ 500 grams.

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帶著靈魂漫步

2樓2011-05-19 16:47:21