嵌段聚合物增韌環(huán)氧樹脂復合材料制備及性能研究
發(fā)布時間：2018-07-26 18:39
【摘要】：在現(xiàn)代化的生產和生活中,先進的機械和儀器的使用已經遍布周邊,這些高科技的運用使得我們的社會有了長足的進步,但是隨之而來產生的噪音污染以及機械儀器振動所產生的安全隱患成為一大難題。在科研人員的研究下發(fā)現(xiàn),阻尼材料的使用可以很好的解決這個問題。阻尼材料是一種可以將機械振動能轉換為熱能的功能材料,目前已經廣泛應用于包括交通工具、產業(yè)機械、建筑土木、家用電器、精密儀器和軍事裝備等領域的減震降噪。而高分子阻尼材料以其阻尼性能好、比重輕、強度高、韌性好、易加工成型和成本低等優(yōu)點成為阻尼材料研究的熱點�；ゴ┚酆衔锞W絡(IPNs)是由2種或2種以上的聚合物網絡相互穿透或纏結所構成的一類化學共混網絡合1金體1系,是1一1種新型聚合物共混改性技術,以其獨特的化學共混方法和強迫互容、界面互穿、協(xié)同作用、加工和功能復合等特點,備受人們的關注。2 0世紀6 0年代,Millar J R首先制備出了互穿網絡結構的材料,并通過控制不同組分的比例良好地改善了材料的力學和物理性能。本文針對一般高分子阻尼材料中力學性能低和阻尼溫域窄等不足,采用ATRP技術合成了五嵌段共聚物PS-PGMA-PDMS-PGMA-PS,并對它的性能分別進行了研究。然后用合成樹脂與環(huán)氧樹脂在固化劑間苯二胺的作用下,固化形成大分子聚合物;并與碳纖維粉填料溶液共混后成型,最終得到高模量阻尼復合材料。我們對復合材料的形貌、阻尼性能、力學性能及熱學性能進行了詳細的研究。通過原子轉移自由基聚合,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);在微觀相上形.成微相分離的納.米結構,粒徑.大小200 nm左右,在宏.觀上呈.橡塑形態(tài);具有良好的熱.穩(wěn)定性,低分解.溫度達270℃,高分解.溫度達440℃。由于引入了.反應性.的基.團親環(huán).氧基,使其.可以參.與環(huán)氧樹.脂的固.化反應,大大增.加了其設.計性及使用性。合成樹脂、.環(huán)氧樹脂與.碳纖維補.強劑之間的.宏觀相容.性較好,尤其是.加入碳纖維粉后,體系中三.種組分協(xié).同作用,材料表現(xiàn)良好.的阻尼.性能,tanδ0.3的溫域.約為50℃(70℃-120℃),且最大.值達到1.2。而且,我們發(fā).現(xiàn)可以通過加.入不同的補.強劑及其用.量來控制阻尼.峰的峰位和.峰值,獲得在不同溫.域下具有一.定的阻尼性.能的材料。復合材料加.入合成.樹脂則降.低了體系.的交.聯(lián).密度,本身強.度又不是.很高,從而導致.體系的壓.縮模.量降.低。加入高.強度的.碳纖維.粉后,壓縮模量.加大提高,當含量.為20%時,壓縮模量.達到最大。復合材料的拉伸強度基本均大于我們所合成的多嵌段共聚物(拉伸強度MAX=24MPa)。環(huán)氧樹脂/碳纖維復合材料拉伸強度隨著碳纖維含量的增加,拉伸強度逐漸升高,當填料含量達到20%時,拉伸強度達到最大。制備的阻尼材料具有良好的的熱學性能,分解溫度達到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.
【學位授予單位】：西南科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ323.5;TB332
本文編號：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.
【學位授予單位】：西南科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ323.5;TB332
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