【摘要】：隨著電子信息產(chǎn)業(yè)的飛速發(fā)展對(duì)設(shè)備集成化、小型化及可攜帶化的要求,這就對(duì)目前的材料行業(yè)提出了新的課題,制備更先進(jìn)的材料來(lái)滿(mǎn)足先進(jìn)設(shè)備制造對(duì)材料的要求。對(duì)于電子產(chǎn)品來(lái)說(shuō)電介質(zhì)材料是直接影響元器件性能的因素。聚芳醚腈是一種具有杰出性能的特種功能材料,能夠應(yīng)用于社會(huì)生活生產(chǎn)的許多方面,高絕緣性、高熱穩(wěn)定性以及優(yōu)異的介電性能使其在電容器及儲(chǔ)能薄膜電容器等電子元器件制造方面有巨大的應(yīng)用潛力。因此為了拓寬聚芳醚腈的應(yīng)用,本文通過(guò)化學(xué)及物理方法對(duì)聚芳醚腈基材料的性能進(jìn)行優(yōu)化以期能實(shí)現(xiàn)在上述方面的實(shí)際應(yīng)用。首先,本文合成了可交聯(lián)型聚芳醚腈。由于鏈端鄰苯二甲腈在加熱或催化條件下會(huì)發(fā)生成環(huán)反應(yīng),因此我們通過(guò)熱交聯(lián)及加入三官能度鄰苯二甲腈作交聯(lián)劑制備了交聯(lián)聚芳醚腈薄膜。并通過(guò)DSC、TGA、DMA及TMA證明了其具有介電性能-頻率、溫度、時(shí)間以及工作循環(huán)穩(wěn)定性,并證明其能夠在寬頻范圍(100 Hz-200kHz)、寬溫度范圍(20-350 oC)以及長(zhǎng)時(shí)間使用并具有優(yōu)異的可靠性。鐵電性測(cè)試證明交聯(lián)聚芳醚腈是典型的線性電介質(zhì)并且在高溫下具有穩(wěn)定的儲(chǔ)能特性。其次,由于聚芳醚腈交聯(lián)條件苛刻限制了其的制備及應(yīng)用,因此通過(guò)水熱法制備了納米氧化鋅晶須(ZnO-nws)并將其作為交聯(lián)催化劑加入到聚芳醚腈基體中,并研究了其對(duì)聚芳醚腈交聯(lián)反應(yīng)的催化劑作用以及對(duì)交聯(lián)聚芳醚腈薄膜的交聯(lián)度、熱穩(wěn)定性、力學(xué)性能、介電性能以及儲(chǔ)能特性等的影響。通過(guò)研究發(fā)現(xiàn)納米氧化鋅晶須對(duì)交聯(lián)反應(yīng)有明顯的催化作用可以有效的優(yōu)化交聯(lián)工藝并且可以在保證介電性能-溫度穩(wěn)定性的前提下提高介電常數(shù),實(shí)現(xiàn)更高的儲(chǔ)能密度。最后,為提高交聯(lián)聚芳醚腈薄膜的介電常數(shù),我們制備了核殼鋯酸鉛包裹鈦酸鋇納米粒子,并作為高介電填料制備了復(fù)合高介電聚芳醚腈薄膜。通過(guò)對(duì)交聯(lián)度、熱穩(wěn)定性、介電性能及儲(chǔ)能特性的研究發(fā)現(xiàn)納米粒子加入不會(huì)破壞薄膜的熱穩(wěn)定及介電性能-溫度穩(wěn)定性,并且在提高介電常數(shù)的同時(shí)保持擊穿強(qiáng)度最終實(shí)現(xiàn)交聯(lián)薄膜儲(chǔ)能密度的提高,使其在優(yōu)化的交聯(lián)工藝條件下得到高介電的交聯(lián)薄膜。通過(guò)本研究表明,交聯(lián)聚芳醚腈具有極其優(yōu)異的綜合性能,特別是介電性能-溫度穩(wěn)定性以及通過(guò)改性使其具有優(yōu)異的加工性及高介電常數(shù)與儲(chǔ)能密度使其在薄膜電容器以及儲(chǔ)能薄膜電容器方面具有巨大的應(yīng)用潛力。
[Abstract]:With the rapid development of electronic and information industry, the requirements of equipment integration, miniaturization and portability have been put forward, which puts forward a new subject for the current material industry, and the preparation of more advanced materials to meet the requirements of advanced equipment manufacturing for materials. For electronic products, dielectric materials are the factors that directly affect the performance of components. Poly (aryl ether nitrile) is a special functional material with outstanding properties, which can be used in many aspects of social life, high insulation, High thermal stability and excellent dielectric properties have great potential applications in the manufacture of electronic components such as capacitors and energy storage thin film capacitors. Therefore, in order to broaden the application of poly (aryl ether nitrile), the properties of poly (aryl ether nitrile) based materials were optimized by chemical and physical methods in order to realize the practical application in the above aspects. Firstly, crosslinked poly (aryl ether nitrile) was synthesized. Because the chain-terminated phthalonitrile can be cyclized under heating or catalytic conditions, the crosslinked poly (aryl ether nitrile) thin films were prepared by thermal crosslinking and adding trifunctional phthalonitrile as cross-linking agent. The dielectric properties-frequency, temperature, time and working cycle stability have been proved by DSC,TGA,DMA and TMA, and it has been proved that it can be used in the wide band range (100 Hz-200kHz). Wide temperature range (20? 350 oC) and long-term use with excellent reliability. Ferroelectricity tests show that crosslinked poly (aryl ether nitrile) is a typical linear dielectrics and has stable energy storage characteristics at high temperatures. Secondly, the preparation and application of poly (aryl ether nitrile) crosslinked were restricted by severe conditions, so nano-zinc oxide whiskers (ZnO-nws) were prepared by hydrothermal method and added into poly (aryl ether nitrile) matrix as cross-linking catalyst. The effect of the catalyst on the crosslinking reaction of poly (aryl ether nitrile) and the cross-linking degree, thermal stability, mechanical properties, dielectric properties and energy storage characteristics of the crosslinked poly (aryl ether nitrile) film were also studied. It is found that the nano-ZnO whisker can effectively optimize the crosslinking process and improve the dielectric constant and achieve a higher energy storage density under the premise of ensuring the dielectric property-temperature stability. Finally, in order to improve the dielectric constant of crosslinked poly (aryl ether nitrile) films, core-shell lead zirconate-coated barium titanate nanoparticles were prepared and composite high dielectric polyether nitrile thin films were prepared as high dielectric fillers. It is found that the addition of nano-particles does not destroy the thermal stability and dielectric properties-temperature stability of the thin films by studying the crosslinking degree, thermal stability, dielectric properties and energy storage properties of the films. At the same time, the dielectric constant is increased while the breakdown strength is maintained. Finally, the energy storage density of the cross-linked film is improved, and the high dielectric cross-linking film is obtained under the optimized crosslinking conditions. The results show that the crosslinked poly (aryl ether nitrile) has excellent comprehensive properties. Especially the dielectric properties-temperature stability and its excellent processability and high dielectric constant and energy storage density make it have great potential applications in thin-film capacitors and energy-storage thin-film capacitors.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TB383.2

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本文編號(hào)：2430784