本文選題：PSA短纖維 + 漿粕��； 參考：《華東理工大學(xué)》2015年碩士論文

【摘要】：短纖維在輪胎中的應(yīng)用頗具潛力,是輪胎高性能化發(fā)展的重要技術(shù)路線之一。而PSA短纖維以其高模量、高強(qiáng)度、低密度的特點(diǎn),引起國內(nèi)外的廣泛關(guān)注。開展PSA短纖維、漿粕增強(qiáng)輪胎用丁腈橡膠復(fù)合材料的研究工作,對于提高我國輪胎工業(yè)的整體水平具有重要意義。本文以PSA短纖維、漿粕增強(qiáng)輪胎用丁腈橡膠復(fù)合材料為研究對象,選用兩種預(yù)分散PSA短纖維的預(yù)聚體：PSA膠乳預(yù)聚體和PSA/PP預(yù)聚體。在重點(diǎn)考察兩者增強(qiáng)作用的同時,針對短纖維增強(qiáng)橡膠應(yīng)用中需要十分注意的分散、粘合等幾個問題進(jìn)行了研究。結(jié)果表明：(1)兩種短纖維在橡膠基體中都得到了很好地分散,也都對復(fù)合材料有著明顯的增強(qiáng)作用。(2)兩種短纖維添加份數(shù)對復(fù)合材料的拉伸強(qiáng)度、撕裂強(qiáng)度等基本力學(xué)性能的影響存在差異。(3)力爭克服芳砜綸短纖維漿粕在天然橡膠中的分散性較差這一技術(shù)難點(diǎn),通過合理的工藝調(diào)整使得芳砜綸短纖維、漿粕在天然橡膠中的獲得最佳的分散及母膠流變特性。(4)PSA漿粕表面的超細(xì)纖維能夠與橡膠基體之間形成較強(qiáng)的界面作用,但也妨礙了漿粕的分散,這是造成兩種短纖維增強(qiáng)復(fù)合材料基本力學(xué)性能差異的主要原因。(5)從基本力學(xué)性能分析來看,兩種短纖維由于界面粘合或分散性上的不足,未能充分發(fā)揮其增強(qiáng)作用,應(yīng)用中如能采用合適的預(yù)處理方法,有望進(jìn)一步提高性能�？偟恼f來,對兩種PSA短纖維預(yù)聚體產(chǎn)品的預(yù)分散處理大大提高了其在橡膠中的分散性,而基于PSA纖維高強(qiáng)度、高模量的特點(diǎn),兩者對橡膠復(fù)合材料都有著明顯的增強(qiáng)作用。在拉伸強(qiáng)度、撕裂強(qiáng)度等基本力學(xué)性能方面,兩者各有各的優(yōu)勢,對輪胎使用性能的影響也是提高了部分性能的同時降低了其它部分性能。因此,在輪胎用橡膠復(fù)合材料配方設(shè)計中,應(yīng)根據(jù)輪胎的實(shí)際需要選用合適的短纖維產(chǎn)品。
[Abstract]:The application of short fiber in tire has great potential and is one of the important technical routes for the development of high performance tire. PSA short fiber has attracted wide attention at home and abroad because of its high modulus, high strength and low density. The research of PSA short fiber and pulp reinforced nitrile rubber composites for tire is of great significance to improve the overall level of tire industry in China. In this paper, PSA short fiber and pulp reinforced nitrile rubber (NBR) composite for tire were studied. Two kinds of prepolymer of predispersed PSA short fiber, prepolymer: PSA / PSA latex prepolymer and PSA / PP prepolymer were selected. At the same time, the dispersion and adhesion of short fiber reinforced rubber were studied. The results showed that: (1) the two short fibers were dispersed well in rubber matrix, and both of them had obvious reinforcing effect on the composites. (2) the tensile strength of the composites was influenced by the addition number of the two kinds of short fibers. The effects of tear strength and other basic mechanical properties are different. (3) to overcome the technical difficulty of the poor dispersion of PSA staple pulp in natural rubber, the PSA staple fiber can be made by reasonable process adjustment. The optimum dispersion of pulp in natural rubber and rheological properties of mother gum were obtained. (4) the superfine fiber on PSA pulp could form a strong interface with rubber matrix, but it also hindered the dispersion of pulp. This is the main reason for the difference in the basic mechanical properties of the two kinds of short fiber reinforced composites. (5) from the analysis of the basic mechanical properties, the two kinds of short fibers can not give full play to their reinforcing function because of the lack of interfacial adhesion or dispersion. If suitable pretreatment method can be used in the application, the performance will be further improved. In general, the predispersion of two kinds of PSA short fiber prepolymer products greatly improved their dispersity in rubber, but based on the characteristics of high strength and high modulus of PSA fiber, both of them have obvious reinforcing effect on rubber composites. In terms of tensile strength tear strength and other basic mechanical properties the two have their own advantages. The effect on the performance of tire is also to improve some properties and reduce the performance of other parts. Therefore, in the formulation design of rubber composites for tire, suitable short fiber products should be selected according to the actual needs of tire.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB332

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