有機(jī)長(zhǎng)鏈離子修飾無(wú)機(jī)納米粒子及填充復(fù)合材料的結(jié)構(gòu)與性能研究
發(fā)布時(shí)間：2018-09-07 14:44
【摘要】：本文以零維、一維、零維/二維雜化粒子為研究對(duì)象,通過(guò)其表面長(zhǎng)鏈離子化修飾,制備出流變行為和結(jié)構(gòu)可單一調(diào)控的單分散核殼類流體。考察具有不同接枝狀態(tài)的納米類流體的形態(tài)結(jié)構(gòu)與流變行為,研究粒子表面長(zhǎng)鏈有機(jī)物種類、分子量等因素對(duì)類流體流變行為和對(duì)聚合物基體的性能影響。采用離子交換法成功制備埃洛石類流體和氫氧化鎂類流體,對(duì)其進(jìn)行結(jié)構(gòu)表征,測(cè)試結(jié)果表明離子交換法能成功制備流變行為可控的類流體。而且所需反應(yīng)條件溫和,合成過(guò)程綠色環(huán)保,但是反應(yīng)耗時(shí)長(zhǎng),產(chǎn)率不高。另外通過(guò)粒子表面的羥基與兩端帶有羥基的嵌段共聚物進(jìn)行氫鍵相互作用的方法成功制備了炭黑類流體和graphene@SiO_2雜化類流體,測(cè)試結(jié)果表明通過(guò)該方法能成功制備具有類液行為的零維類流體和雜化類流體體系。氫鍵自組裝法處理過(guò)程簡(jiǎn)單,耗時(shí)短,反應(yīng)條件溫和,有助于大規(guī)模生產(chǎn)。對(duì)比兩種不同方法制備的類流體的流變行為,發(fā)現(xiàn)改變核的種類并不影響類流體體系的流變行為,說(shuō)明類流體的流動(dòng)主要是表面有機(jī)長(zhǎng)鏈的影響,而表面有機(jī)長(zhǎng)鏈的不同對(duì)類流體的流動(dòng)性能有一定影響。通過(guò)對(duì)炭黑類流體和氧化石墨烯類流體的流變行為進(jìn)行分析可知,通過(guò)控制表面三嵌段共聚物的含量能有效地調(diào)控類流體的流變行為。最后,采用共混法制備了埃洛石類流體/聚苯乙烯復(fù)合材料、將氫氧化鎂類流體/三羥甲基丙烷三丙烯酸酯復(fù)合材料和炭黑類流體/聚乙烯醇復(fù)合材料,研究發(fā)現(xiàn)類流體填充聚合物能提高復(fù)合材料的機(jī)械性能和熱穩(wěn)定性,這是由于類流體不僅能提高填料與聚合物之間的界面相容性,均勻分散再聚合物中,并能保持類流體體系中粒子的固有特性,使得復(fù)合材料的性能得到較大改善。
[Abstract]:In this paper, zero dimensional, one dimensional, zero dimensional / two dimensional hybrid particles are studied. Mono-dispersed core-shell fluids with single rheological behavior and structure can be prepared by long chain ionization modification on their surface. The morphology and rheological behavior of nano-fluids with different grafted states were investigated. The effects of the types of long-chain organic compounds on the surface of particles and molecular weight on the rheological behavior and properties of polymer matrix were studied. Ellostone and magnesium hydroxide fluids were successfully prepared by ion exchange method, and their structures were characterized. The results showed that ion-exchange method could successfully prepare rheological fluid-like fluids with controllable rheological behavior. The reaction conditions are mild and the synthesis process is green and environmentally friendly, but the reaction time is long and the yield is not high. In addition, carbon black and graphene@SiO_2 hybrid fluids were successfully prepared by hydrogen bond interaction between hydroxyl groups on the surface of particles and block copolymers with hydroxyl groups at both ends. The results show that the zero-dimensional fluid and hybrid fluid-like system with liquid-like behavior can be successfully prepared by this method. The hydrogen bond self-assembly process is simple, short time consuming and mild reaction conditions, which is helpful for mass production. By comparing the rheological behavior of fluid-like fluid prepared by two different methods, it is found that the rheological behavior of fluid-like system is not affected by changing the type of nucleus, which indicates that the flow of fluid-like fluid is mainly affected by the long chain of surface organic. However, the fluidity of fluid-like fluid is influenced by the difference of organic long chain on the surface. By analyzing the rheological behavior of carbon black and graphene oxide fluids, the rheological behavior of fluid-like fluids can be effectively controlled by controlling the content of surface triblock copolymers. In the end, the aloxite / polystyrene composites were prepared by blending method. Magnesium hydroxide fluids / trimethylolpropane triacrylate composites and carbon black fluids / polyvinyl alcohol composites were prepared. It is found that fluid-like polymer filling can improve the mechanical properties and thermal stability of composites, which is due to the fact that fluid-like fluids can not only improve the interfacial compatibility between fillers and polymers, but also disperse uniformly in the polymer. The properties of the composites can be improved greatly by keeping the inherent properties of the particles in the fluid-like system.
【學(xué)位授予單位】：武漢紡織大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB383.1;TB33
本文編號(hào)：2228563
[Abstract]:In this paper, zero dimensional, one dimensional, zero dimensional / two dimensional hybrid particles are studied. Mono-dispersed core-shell fluids with single rheological behavior and structure can be prepared by long chain ionization modification on their surface. The morphology and rheological behavior of nano-fluids with different grafted states were investigated. The effects of the types of long-chain organic compounds on the surface of particles and molecular weight on the rheological behavior and properties of polymer matrix were studied. Ellostone and magnesium hydroxide fluids were successfully prepared by ion exchange method, and their structures were characterized. The results showed that ion-exchange method could successfully prepare rheological fluid-like fluids with controllable rheological behavior. The reaction conditions are mild and the synthesis process is green and environmentally friendly, but the reaction time is long and the yield is not high. In addition, carbon black and graphene@SiO_2 hybrid fluids were successfully prepared by hydrogen bond interaction between hydroxyl groups on the surface of particles and block copolymers with hydroxyl groups at both ends. The results show that the zero-dimensional fluid and hybrid fluid-like system with liquid-like behavior can be successfully prepared by this method. The hydrogen bond self-assembly process is simple, short time consuming and mild reaction conditions, which is helpful for mass production. By comparing the rheological behavior of fluid-like fluid prepared by two different methods, it is found that the rheological behavior of fluid-like system is not affected by changing the type of nucleus, which indicates that the flow of fluid-like fluid is mainly affected by the long chain of surface organic. However, the fluidity of fluid-like fluid is influenced by the difference of organic long chain on the surface. By analyzing the rheological behavior of carbon black and graphene oxide fluids, the rheological behavior of fluid-like fluids can be effectively controlled by controlling the content of surface triblock copolymers. In the end, the aloxite / polystyrene composites were prepared by blending method. Magnesium hydroxide fluids / trimethylolpropane triacrylate composites and carbon black fluids / polyvinyl alcohol composites were prepared. It is found that fluid-like polymer filling can improve the mechanical properties and thermal stability of composites, which is due to the fact that fluid-like fluids can not only improve the interfacial compatibility between fillers and polymers, but also disperse uniformly in the polymer. The properties of the composites can be improved greatly by keeping the inherent properties of the particles in the fluid-like system.
【學(xué)位授予單位】：武漢紡織大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB383.1;TB33
【參考文獻(xiàn)】
相關(guān)期刊論文 前2條
1 張曦;鄭亞萍;蘭嵐;李化毅;楊海成;;碳納米管/三嵌段聚合物(PPP)無(wú)溶劑流體的制備及對(duì)聚丙烯性能的影響[J];高分子材料科學(xué)與工程;2013年04期
2 李琦;吳曉彥;董麗杰;黃靜;尚雪梅;謝海安;熊傳溪;;SiO_2納米類流體及其復(fù)合材料的電性能研究[J];武漢理工大學(xué)學(xué)報(bào);2011年01期
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