嵌段聚合物增韧环氧树脂复合材料制备及性能研究
发布时间：2018-07-26 18:39
【摘要】：在现代化的生产和生活中,先进的机械和仪器的使用已经遍布周边,这些高科技的运用使得我们的社会有了长足的进步,但是随之而来产生的噪音污染以及机械仪器振动所产生的安全隐患成为一大难题。在科研人员的研究下发现,阻尼材料的使用可以很好的解决这个问题。阻尼材料是一种可以将机械振动能转换为热能的功能材料,目前已经广泛应用于包括交通工具、产业机械、建筑土木、家用电器、精密仪器和军事装备等领域的减震降噪。而高分子阻尼材料以其阻尼性能好、比重轻、强度高、韧性好、易加工成型和成本低等优点成为阻尼材料研究的热点。互穿聚合物网络(IPNs)是由2种或2种以上的聚合物网络相互穿透或缠结所构成的一类化学共混网络合1金体1系,是1一1种新型聚合物共混改性技术,以其独特的化学共混方法和强迫互容、界面互穿、协同作用、加工和功能复合等特点,备受人们的关注。2 0世纪6 0年代,Millar J R首先制备出了互穿网络结构的材料,并通过控制不同组分的比例良好地改善了材料的力学和物理性能。本文针对一般高分子阻尼材料中力学性能低和阻尼温域窄等不足,采用ATRP技术合成了五嵌段共聚物PS-PGMA-PDMS-PGMA-PS,并对它的性能分别进行了研究。然后用合成树脂与环氧树脂在固化剂间苯二胺的作用下,固化形成大分子聚合物;并与碳纤维粉填料溶液共混后成型,最终得到高模量阻尼复合材料。我们对复合材料的形貌、阻尼性能、力学性能及热学性能进行了详细的研究。通过原子转移自由基聚合,合成的多嵌段共聚物PS-PGMA-PDMS-PGMA-PS。其分子量可控,且聚合物的多分散性低(PDI=1.19~1.40);在微观相上形.成微相分离的纳.米结构,粒径.大小200 nm左右,在宏.观上呈.橡塑形态;具有良好的热.稳定性,低分解.温度达270℃,高分解.温度达440℃。由于引入了.反应性.的基.团亲环.氧基,使其.可以参.与环氧树.脂的固.化反应,大大增.加了其设.计性及使用性。合成树脂、.环氧树脂与.碳纤维补.强剂之间的.宏观相容.性较好,尤其是.加入碳纤维粉后,体系中三.种组分协.同作用,材料表现良好.的阻尼.性能,tanδ0.3的温域.约为50℃(70℃-120℃),且最大.值达到1.2。而且,我们发.现可以通过加.入不同的补.强剂及其用.量来控制阻尼.峰的峰位和.峰值,获得在不同温.域下具有一.定的阻尼性.能的材料。复合材料加.入合成.树脂则降.低了体系.的交.联.密度,本身强.度又不是.很高,从而导致.体系的压.缩模.量降.低。加入高.强度的.碳纤维.粉后,压缩模量.加大提高,当含量.为20%时,压缩模量.达到最大。复合材料的拉伸强度基本均大于我们所合成的多嵌段共聚物(拉伸强度MAX=24MPa)。环氧树脂/碳纤维复合材料拉伸强度随着碳纤维含量的增加,拉伸强度逐渐升高,当填料含量达到20%时,拉伸强度达到最大。制备的阻尼材料具有良好的的热学性能,分解温度达到260℃-280℃。
[Abstract]:In the modern production and life, the use of advanced machinery and instruments has spread all over the surrounding area. These high-tech applications have made great progress in our society. But the noise pollution and the safety hidden danger produced by the vibration of mechanical instruments have become a big problem. The use of materials can be a good solution to this problem. Damping material is a functional material that can convert mechanical vibration into thermal energy. It is now widely used in damping and noise reduction including transportation, industrial machinery, building civil, household appliances, precision instruments and military equipment. And polymer damping material is damped with its damping. Good properties, light weight, high strength, good toughness, easy processing and low cost have become a hot spot in the research of damping materials. The interpenetrating polymer network (IPNs) is a kind of chemical blend network 1 gold body 1 system composed of 2 or more than 2 kinds of polymer networks. It is a new kind of new blend modification technology of 1 and 1 kinds of polymers. Its unique chemical blending method and the characteristics of forced interpenetration, interpenetrating interface, synergism, processing and functional recombination have attracted much attention in.2 60s zeroth Century. Millar J R first prepared the material for interpenetrating network structure, and improved the mechanical and physical properties of the material by controlling the proportion of different components. The five block copolymer PS-PGMA-PDMS-PGMA-PS was synthesized by ATRP technology, and the properties of the polymer damping material were low and the damping temperature field was narrow. And the properties of the copolymer were studied. Then the polymer was solidified with the epoxy resin and epoxy resin in the curing agent, and the polymer was formed with the carbon fiber powder. The morphology, damping, mechanical properties and thermal properties of the composites were studied in detail. The molecular weight of the synthesized multiblock copolymer PS-PGMA-PDMS-PGMA-PS. was controlled by atom transfer radical polymerization, and the polydispersity of the polymer was low (PDI =1.19~1.40); in the micro phase. The nan-phase structure, the particle size, the size of 200 nm, the macro. On the macro. The rubber plastic form; the good heat, stability, low decomposition. The temperature reaches 270 degrees C, the high decomposition. The temperature is 440 C. The reactivity. Reactivity. Group ring. Oxygen group. It can be used as a solid reaction with the epoxy tree. Increase greatly. Add its layout and use. Synthetic resin, epoxy resin and carbon fiber complement, strong agent. Good macro compatibility. Especially. After adding carbon fiber powder, the system is three. The same effect, material performance, damping. Properties, tan delta 0.3 temperature range. About 50 C (70 -120 C), and maximum. The value is 1.2., And we send it. We can now add different supplements, strong agents and their use. Control dampening of the peak and the peak. The damping of the peak and the peak are obtained at different temperatures. The material. The composite added. The composite. The resin is reduced. The system. The density, its strength, and not. High, so that the pressure of the system. Compression modulus. Compression modulus. When the content is 20%, the compression modulus is maximum. The tensile strength of the composite is greater than that of the multiblock copolymer (tensile strength MAX=24MPa). The tensile strength of epoxy resin / carbon fiber composites with carbon fiber content. The tensile strength increased gradually. When the filler content reached 20%, the tensile strength reached the maximum. The prepared damping material had good thermal properties and the decomposition temperature reached 260 -280 C.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ323.5;TB332
本文编号：2146940
[Abstract]:In the modern production and life, the use of advanced machinery and instruments has spread all over the surrounding area. These high-tech applications have made great progress in our society. But the noise pollution and the safety hidden danger produced by the vibration of mechanical instruments have become a big problem. The use of materials can be a good solution to this problem. Damping material is a functional material that can convert mechanical vibration into thermal energy. It is now widely used in damping and noise reduction including transportation, industrial machinery, building civil, household appliances, precision instruments and military equipment. And polymer damping material is damped with its damping. Good properties, light weight, high strength, good toughness, easy processing and low cost have become a hot spot in the research of damping materials. The interpenetrating polymer network (IPNs) is a kind of chemical blend network 1 gold body 1 system composed of 2 or more than 2 kinds of polymer networks. It is a new kind of new blend modification technology of 1 and 1 kinds of polymers. Its unique chemical blending method and the characteristics of forced interpenetration, interpenetrating interface, synergism, processing and functional recombination have attracted much attention in.2 60s zeroth Century. Millar J R first prepared the material for interpenetrating network structure, and improved the mechanical and physical properties of the material by controlling the proportion of different components. The five block copolymer PS-PGMA-PDMS-PGMA-PS was synthesized by ATRP technology, and the properties of the polymer damping material were low and the damping temperature field was narrow. And the properties of the copolymer were studied. Then the polymer was solidified with the epoxy resin and epoxy resin in the curing agent, and the polymer was formed with the carbon fiber powder. The morphology, damping, mechanical properties and thermal properties of the composites were studied in detail. The molecular weight of the synthesized multiblock copolymer PS-PGMA-PDMS-PGMA-PS. was controlled by atom transfer radical polymerization, and the polydispersity of the polymer was low (PDI =1.19~1.40); in the micro phase. The nan-phase structure, the particle size, the size of 200 nm, the macro. On the macro. The rubber plastic form; the good heat, stability, low decomposition. The temperature reaches 270 degrees C, the high decomposition. The temperature is 440 C. The reactivity. Reactivity. Group ring. Oxygen group. It can be used as a solid reaction with the epoxy tree. Increase greatly. Add its layout and use. Synthetic resin, epoxy resin and carbon fiber complement, strong agent. Good macro compatibility. Especially. After adding carbon fiber powder, the system is three. The same effect, material performance, damping. Properties, tan delta 0.3 temperature range. About 50 C (70 -120 C), and maximum. The value is 1.2., And we send it. We can now add different supplements, strong agents and their use. Control dampening of the peak and the peak. The damping of the peak and the peak are obtained at different temperatures. The material. The composite added. The composite. The resin is reduced. The system. The density, its strength, and not. High, so that the pressure of the system. Compression modulus. Compression modulus. When the content is 20%, the compression modulus is maximum. The tensile strength of the composite is greater than that of the multiblock copolymer (tensile strength MAX=24MPa). The tensile strength of epoxy resin / carbon fiber composites with carbon fiber content. The tensile strength increased gradually. When the filler content reached 20%, the tensile strength reached the maximum. The prepared damping material had good thermal properties and the decomposition temperature reached 260 -280 C.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ323.5;TB332
【参考文献】
相关期刊论文 前6条
1 苗传威,夏宇正,石淑先,焦书科;乳液共混法制备丙烯酸酯系阻尼材料[J];北京化工大学学报(自然科学版);2002年05期
2 何慧敏;王雁冰;沈强;黄志雄;张联盟;;压电陶瓷/聚合物基新型阻尼复合材料的研究进展[J];材料导报;2008年01期
3 李亦东，于翘;阻尼结构与高聚物阻尼材料[J];材料科学与工程;1995年02期
4 李永清;朱锡;石勇;晏欣;;聚硅氧烷嵌段聚氨酯/环氧树脂IPN的动态力学性能与形态结构[J];高分子材料科学与工程;2008年11期
5 王进;张晓君;丁智平;杨军;;高分子阻尼涂料的研究进展[J];高分子通报;2008年06期
6 沙磊;;有机硅、云母改性丙烯酸酯互穿网络阻尼材料的制备及性能研究[J];中国涂料;2008年08期
，本文编号：2146940
本文链接：https://www.wllwen.com/kejilunwen/cailiaohuaxuelunwen/2146940.html
