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耐磨、柔软SBS鞋用弹性体材料的制备与性能

Preparation and Properties of Wear-resisting, Flexible SBS Elastomer Materials for Shoes

【作者】 何志才

【导师】 魏刚;

【作者基本信息】 西华大学 , 材料加工工程, 2007, 硕士

【摘要】 苯乙烯-丁二烯-苯乙烯三嵌段共聚物(SBS)是一种重要的热塑性弹性体,广泛用作皮鞋、运动鞋和旅游鞋的鞋底材料。它具有重量轻、穿着舒服、抗湿滑、没有橡胶特有的臭味以及边角废料可回收利用等优点,已成为鞋底材料最主要的原材料之一。单纯采用充油SBS制作鞋底材料,存在耐磨性较差等缺点。SBS作为鞋底材料,其柔软性和耐磨性是其中的两项重要指标,一味提高柔软性将会造成耐磨性能不达标。因此,在保持充油SBS柔软性能不降低或少许降低的前提下,如何提高其耐磨性能,即如何制备得到兼具有柔软性和耐磨性的SBS鞋底材料成为一个重要的研究课题。本论文在充油SBS的基础上,选用不同种类和特性的高分子改性剂及其与无机粒子并用对SBS进行改性,考察材料的力学性能、柔软性(硬度)及耐磨性能的变化规律,揭示改性体系宏观性能与微观结构之间的相应关系。主要研究内容及结果如下:1.考察PS及其与无机粒子(CaCO3、nano-CaCO3、SiO2、nano-SiO2)并用,以及母料法对SBS的拉伸强度、扯断伸长率、定伸强度、扯断永久变形、柔软性(硬度)和耐磨性能的影响。结果表明:当加入15份PS时,SBS/PS共混物的拉伸性能最优,耐磨性提高,柔软性降低幅度不大。普通无机粒子(CaCO3、SiO2)的加入,降低了SBS/PS共混物的拉伸性能及柔软性。而加入1份纳米无机粒子(nano-CaCO3、nano-SiO2)时,可提高SBS/PS共混物的拉伸性能和耐磨性。采用母料法可进一步提高SBS/PS/nano-CaCO3三元复合弹性体材料的性能。2.考察EVA及其与纳米无机粒子(nano-CaCO3、nano-SiO2)并用,以及母料法对SBS力学性能的影响。结果表明:当加入15份EVA时,SBS/EVA共混物的拉伸强度及柔软性增加,但耐磨性下降。加入1份纳米无机粒子(nano-CaCO3、nano-SiO2)可提高SBS/EVA共混物的拉伸强度和耐磨性。相比之下,SBS/EVA/nano-CaCO3体系的性能较好。采用母料法可进一步改善SBS/EVA/nano-CaCO3三元复合弹性体材料的性能。3.在1和2基础上,进一步考察了BR、P83及其与nano-CaCO3并用对SBS力学性能的影响。采用SEM观察了纳米无机粒子的分散对弹性体材料性能的影响,以及各种改性剂对弹性体材料耐磨性的影响。结果发现:当SBS/BR配比为90/10时,材料的综合性能较好,其柔软性及耐磨性进一步提高。当加入10份P83时,SBS/P83共混物的耐磨性和柔软性得到提高。两种改性材料都兼具有较好的柔软性和耐磨性能。

【Abstract】 SBS is one kind of important thermoplastic elastomer(TPE), It is widely used as sole materials of leather shoes, gym shoes and travel shoes. SBS has become one of main raw materials of sole materials for lots of merits such as: low weight density, being comfortable, anti-wetslides, and no rubber’s unique odor, and waste materials may be recycled, and so on. Oiled SBS has worse wear-resisting performance used as shoe soles. The flexibility and wear-resisting performance are two important targets when regarding SBS as the shoe sole material. If we consider only enhancing the flexibility, the wear-resisting performance of oiled SBS will be reduced. Therefore, it has become an important research topic to prepare SBS shoe sole materials with flexibility and wear-resisting performance together.This paper selects the different polymer modifier and filler to modify SBS on the base of oiling SBS. The tensile properties, flexibility (degree of hardness) and wear-resisting performance were researched. The relations between the modified system’s mechanical properties and micro-structure were also exposed. Main research contents and results as follows:1. The mechanical properties of the blends, such as tensile strength at break, elongation at break, tensile strength, permanent tensile deformation, flexibility and wear-resisting performance are studied. The relations between mechanical properties and PS, filler(CaCO3、nano-CaCO3、SiO2、nano-SiO2) contents as well as master batch blending are obtained. By analyzing theoretical and experimental data, we discovered that the mechanical properties is superior when PS content was up to 15wt% in SBS/PS binary blends, it can increase the tensile and wear-resisting properties, decrease slightly flexibility. The ordinary filler(CaCO3、SiO2) decrease tensile property and flexibility of SBS/PS binary blends. The mechanical properties is superior when nano-filler(nano-CaCO3、nano-SiO2)content was 1wt% in SBS/PS binary blends, it can increase the tensile and wear-resisting properties. The master batch blending can further improve mechanical properties of SBS/PS/nano-CaCO3 ternary blends.2. The mechanical properties of the blends are studied. The relations between mechanical properties and EVA, nano-filler(nano-CaCO3、nano-SiO2) contents as well as master batch blending are obtained. By analyzing theoretical and experimental data, we discovered that the mechanical properties is superior when EVA content was up to 15wt% in SBS/EVA binary blends, it can increase the tensile property and flexibility, decrease wear-resisting performance. The mechanical properties are superior when nano-filler content was 1wt% in SBS/EVA binary blends, it can increase the tensile and wear-resisting properties. In comparison, the mechanical properties are better of SBS/EVA/nano-CaCO3 ternary blends. The master batch blending can further improve mechanical properties of SBS/EVA/nano-CaCO3 ternary blends.3. The mechanical properties of the blends are studied on the base of 1 and 2. The relations between mechanical properties and BR, P83 as well as nano-CaCO3 contents are obtained. It is also studied the effect of each kind modifier contents on the mechanical properties used the abrasion and nano-filler disperser SEM microphotographs. By analyzing theoretical and experimental data, we discovered that the mechanical properties is superior when the SBS/BR proportion is 90/10 in SBS/PS/BR/nano-CaCO3 quarternary blends, it can further increase the wear-resisting performance and flexibility. The mechanical properties are superior when P83 content was 10wt% in SBS/P83 binary blends, it can increase flexibility and wear-resisting performance. Both of two modified materials have better flexibility and wear-resisting performance.

【关键词】 SBS共混纳米复合柔软性耐磨性
【Key words】 SBSblendingnano-compositesflexibilitywear-resisting performance
  • 【网络出版投稿人】 西华大学
  • 【网络出版年期】2007年 03期
  • 【分类号】TQ340.6
  • 【被引频次】1
  • 【下载频次】516
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