本文選題：質(zhì)子交換膜 + 磺化聚芳醚酮　； 參考：《吉林大學(xué)》2014年博士論文

【摘要】：質(zhì)子交換膜是燃料電池的最核心部件，在燃料電池的工過(guò)程中起著傳導(dǎo)質(zhì)子，阻絕燃料的作用。針對(duì)目前質(zhì)子膜材料存在高磺化度下膜尺寸穩(wěn)定性差與化學(xué)穩(wěn)定性低等問(wèn)題，本論文以合成制備高綜合性能的質(zhì)子交換膜為目的，采用多種方法提高膜的綜合性能，并對(duì)膜的其他性能進(jìn)行了測(cè)試，努力突破膜穩(wěn)定性差等技術(shù)障礙，為實(shí)現(xiàn)工業(yè)化應(yīng)用提供實(shí)驗(yàn)基礎(chǔ)。 成功制備了一種新型含有三甲氧基的聚芳醚酮，利用三溴化硼作為去甲氧基試劑，成功的制備了每個(gè)結(jié)構(gòu)單元中含有三個(gè)羥基的新型的聚芳醚酮。首先，成功的制備了一系列磺化度可控的側(cè)鏈型磺化聚芳醚酮SQNPAEK-x。對(duì)該系列膜進(jìn)行性能測(cè)試，低磺化度下的磺化聚芳醚酮具有良好的綜合性能，但是在高磺化下，其高的吸水率以及較差的阻醇性能限制了其在燃料電池領(lǐng)域的應(yīng)用。為了降低膜的吸水率，，提高膜的阻醇性能，同時(shí)保持質(zhì)子傳導(dǎo)率處于較高水平，我們通過(guò)采用交聯(lián)的方法：（1）首先，成功合成了四甲基聯(lián)苯二酚型環(huán)氧樹(shù)脂TMBP小分子交聯(lián)劑，利用磺化聚芳醚酮上剩余的羥基與環(huán)氧基團(tuán)的反應(yīng)，成功的制備了一系列交聯(lián)膜SQNPAEK/TMBP-xx。該系列的交聯(lián)膜表現(xiàn)出了良好的阻醇性能，較高的尺寸穩(wěn)定性與適宜的質(zhì)子傳導(dǎo)率。（2）然后，成功合成制備了含烯丙基的新型可自交聯(lián)的磺化聚芳醚酮SQNPAEK-AC-x，制備了一系列自交聯(lián)的磺化聚醚醚酮SC-SQNPAEK-x。該方法不需要引入交聯(lián)劑與催化劑，工藝簡(jiǎn)單方便。（3）最后，成功合成制備了含有羧基的磺化聚芳醚酮SPAEK-COOH-x作為大分子交聯(lián)劑，制備了一系列的交聯(lián)膜SQNPAEK/COOH-x，利用交聯(lián)劑上的磺酸基團(tuán)作為催化劑，使得羧基與苯環(huán)發(fā)生交聯(lián)反應(yīng)。此法得到的交聯(lián)膜，交聯(lián)程度大，質(zhì)子傳導(dǎo)率高。該方法適用于多類聚合物膜的改性。
[Abstract]:Proton exchange membrane (PEM) is the most important component of fuel cell. In view of the problems of poor dimensional stability and low chemical stability of proton membrane materials with high sulfonation degree, this paper aims at synthesizing proton exchange membranes with high comprehensive properties and using various methods to improve the comprehensive properties of the membranes. The other properties of the membrane were tested to break through the technical obstacles such as poor stability of the membrane and to provide the experimental basis for the realization of industrial application. A novel poly (aryl ether ketone) containing trimethoxy was successfully prepared. A novel polyaryl ether ketone containing three hydroxyl groups was successfully prepared by using boron tribromoxide as a demethoxyl reagent. Firstly, a series of side chain sulfonated poly (aryl ether ketones) SQNPAEK-xwere successfully prepared. It was found that the sulfonated poly (aryl ether ketone) with low sulfonation degree had good comprehensive performance, but its high water absorption and poor alcohol resistance limited its application in fuel cell field. In order to reduce the water absorption of the membrane, improve the alcohol resistance of the membrane and keep the proton conductivity at a high level, we successfully synthesized a small molecular crosslinking agent of tetramethyl dihydroxybenzene epoxy resin (TMBP) by using crosslinking method: 1). A series of cross-linking membranes SQNPAEK / TMBP-xx were successfully prepared by the reaction of the remaining hydroxyl groups on sulfonated poly (aryl ether ketones) with epoxy groups. This series of cross-linking membranes exhibit good alcohol resistance, high dimensional stability and appropriate proton conductivity. A novel sulfonated poly (aryl ether ketone) SQNPAEK-AC-x containing allyl group was successfully synthesized and a series of self-crosslinked sulfonated polyether ketones SC-SQNPAEK-xwere prepared. This method does not need to introduce crosslinking agent and catalyst, and the process is simple and convenient. Finally, sulfonated poly (aryl ether ketone) SPAEK-COOH-x containing carboxyl group was successfully synthesized as macromolecular crosslinking agent. A series of cross-linking membranes SQNPAEK / COOH-x were prepared. The sulfonic group on the crosslinking agent was used as catalyst to make the carboxyl group cross-link with benzene ring. The crosslinking membrane obtained by this method has high crosslinking degree and high proton conductivity. This method is suitable for the modification of multi-class polymer membranes.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：O631;TM911.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

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2 韓飛,劉長(zhǎng)鵬,邢巍,陸天虹;直接甲醇燃料電池的研究進(jìn)展[J];應(yīng)用化學(xué);2004年09期

本文編號(hào)：1788501