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空心玻璃微珠填充MC尼龙复合材料的研究 总被引:7,自引:0,他引:7
对空心玻璃微珠填充铸型(MC)尼龙进行了系列研究,考察了空心玻璃微珠含量、粒径及表面处理对MC尼龙性能的影响。结果表明,空心玻璃微珠改性MC尼龙复合材料的物理性能和力学性能优良,当加入10%表面处理的空心玻璃微珠时,制品的收缩率下降,热变形温度提高20℃以上,制品具有填料分布均匀、外观光泽优良等优点。与未处理的空心玻璃微珠相比,填充经表面处理空心玻璃微珠的复合材料拉伸强度、弯曲强度、断裂伸长率分别提高了15.7%、12.2%和246%。空心玻璃微珠的粒径愈小,复合材料的力学性能愈好。一定用量的玻璃微珠填充MC尼龙不仅可以使材料保持较好的力学性能和耐热性能,而且能够降低MC尼龙复合材料的成本。 相似文献
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空心玻璃微珠改性环氧树脂印刷电路板基材 总被引:6,自引:0,他引:6
对用于印刷电路板的环氧树脂/空心玻璃微珠复合体系的热性能、力学性能、亚微观形态和吸水性进行了系统的研究。实验表明:用空心玻璃微珠填充环氧树脂可提高后者的热性能和力学性能,尤其加入较小粒径的玻璃微珠,环氧树脂体系的Tg最高可提高5℃;用偶联剂对玻璃微珠表面进行处理,并向体系内加入表面活性剂可获得最佳效果;少量地加入玻璃微珠可降低环氧树脂的吸水性,但随着玻璃微球含量的增大体系的吸水性会随之增加。加入表面活性剂后,体系保持低吸水率。 相似文献
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为制备低密度、高模量的轻量化约束阻尼材料,使用A187对空心玻璃微珠表面进行改性处理,通过扫描电镜观察改性结果。进一步将改性后的空心玻璃微珠加入到约束阻尼涂料中,通过力学性能、极限氧指数、导热系数、复合损耗因子等测试,考察改性后的空心玻璃微珠对约束层各项性能的影响。结果表明:A187可以成功完成表面改性,随着空心玻璃微珠用量的增加,约束层密度降低、模量降低、黏度先降低后升高、氧指数提高、导热系数降低。添加6%改性空心玻璃微珠后,弯曲模量保持率为90.2%,密度降低16.67%,阻尼损耗因子整体温域仅少量降低,降低约束层密度的同时,保证了阻尼材料的降噪特性。 相似文献
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高性能空心玻璃微珠作为一种新型的无机硅酸盐材料。本文对高性能空心玻璃微珠的特性进行了详细介绍,并采用硅烷偶联剂Y-氨丙基三乙氧基硅烷(KH-550)、Y-缩水甘油醚氧丙基三甲氧拭硅烷(KH-560)及Y-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)分别对高性能空心玻璃微珠进行了表面活化处理,考察了微珠表面处理后吸油值的变化,最后通过高倍偏光显微镜、傅里叶红外光谱(FT-IR)对其结构进行了表征,分析了硅烷偶联剂对高性能空心玻璃微珠表面处理的影响因素和活化机理。结果表明:当硅烷偶联剂添力量为0.5-1.0%,处理时间为120min且温度为110℃时,微珠的表面活化处理效果最好。 相似文献
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空心玻璃微珠填充PP复合材料的结构与性能研究 总被引:12,自引:1,他引:12
采用偶联剂KH-550处理空心玻璃微珠,在宽广的用量范围内考察了玻璃微珠含量对PP复合材料拉伸强度、冲击强度、流变性能的影响;研究了复合材料的耐热性能和相态结构,对材料冲击断裂面进行了扫描电镜分析。研究结果表明:与未活化的玻璃微珠相比,填充活化玻璃微珠的复合材料的拉伸强度、冲击强度明显提高;一定用量的玻璃微珠填充PP不仅可以使材料的力学性能和耐热性能保持较好,而且能够降低PP复合材料的成本。 相似文献
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粉煤灰空心玻璃微珠填充高密度聚乙烯的性能 总被引:1,自引:0,他引:1
采用从粉煤灰中提取的空心玻璃微珠,制备不同空心玻璃微珠含量的高密度聚乙烯复合材料,研究空心玻璃微珠对复合材料力学性能和结晶性能的影响.结果表明:随着空心玻璃微珠含量的增加,复合材料的拉伸强度逐步增大,弯曲强度和冲击强度先增大后减小,当空心玻璃微珠质量含量为5%时,弯曲强度和冲击强度达到最大.适量空心玻璃微珠的加入对复合材料的结晶性能有一定程度的改善. 相似文献
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采用压延成张工艺制备碳纤维和玻璃纤维混杂增强非石棉橡胶基密封复合材料(NAFC),以横向抗拉强度作为表征混杂增强橡胶基密封材料中纤维与橡胶界面粘结性能的指标.通过扫描电镜(SEM)对材料横向拉伸试样断口进行形貌分析,及对材料的耐油、耐酸、耐碱性能进行测试,探讨了不同表面处理工艺对纤维与基体界面粘结效果的影响.研究结果表明,对玻璃纤维采用偶联剂KH-550浸渍后涂覆环氧树脂涂层,对碳纤维在空气氧化后涂覆环氧树脂涂层,可有效增强纤维、基体的界面粘结,所制得的混杂纤维增强复合材料具有较好的机械性能和耐介质性能. 相似文献
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《塑料、橡胶和复合材料》2013,42(2):50-58
AbstractHollow carbon black (HCB) is introduced in this work. It has a special hollow structure, high specific surface area, high structure and high electric conductivity. Hollow carbon black is used to fill styrene–butadiene rubber (SBR). The bound rubber test results show that the bound rubber of SBR/HCB can be measured when the HCB content reaches 25 phr because a strong filler network is formed, which indicates good electric conductivity of SBR/HCB. In comparison, the bound rubber of SBR/N330 can not be measured even when the N330 content is 40 phr. The mechanical measurements show that HCB has very good reinforcing effect on SBR especially when the filler content is low. The electric conductivity and thermal conductivity increase with the increase in filler content. At the same filler content, the properties of SBR/HCB nanocomposites are better than those of SBR/N330 nanocomposites, which suggests that HCB has good application potential. 相似文献
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石墨及其表面改性对硅橡胶导热性能的影响 总被引:3,自引:0,他引:3
用双辊混炼机将导热填料分散到聚甲基乙烯基硅氧烷中,再配以增强剂、硫化剂等,经模压硫化制得导热硅橡胶。研究了导热填料种类、石墨的表面改性和用量以及石墨与炭黑的复配对硅橡胶导热性和力学性能的影响。结果表明,在用量相同的情况下,导热填料的导热系数越高,其填充硅橡胶的导热性越好,且硅橡胶的导热系数随导热填料用量的增加而增大。石墨的表面改性改善了石墨与硅橡胶的界面相容性,使硅橡胶的力学性能和导热性都得到提高。不同粒径及颗粒形态的炭黑与石墨复合可改善硅橡胶的导热性和力学性能,导热硅橡胶的拉伸强度和扯断伸长率随复合填料中炭黑用量的增加而提高,当石墨与炭黑质量比为25/5时,硅橡胶的导热系数最高,综合性能较好。 相似文献
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《塑料、橡胶和复合材料》2013,42(7):290-296
AbstractCarbon black (CB) and carbon nanotubes (CNTs) filled natural rubber (NR) composites were prepared. In order to overcome the dispersion of CNTs in rubber matrix, the surface modification of CNTs with bis-(γ-triethoxysilylpropyl)-tetrasulphide (Si-69) was undertaken, and a two-step mixing process, i.e. the use of twin roll mill followed by mixing in a Haake Banbury mixer (TR-THM) was used. The structure and mechanical properties were investigated. The results show that the Si-69 treated CNTs (S-CNTs) were dispersed in the rubber matrix uniformly. Compared with CB/NR composites without CNTs, the S-CNTs/CB/NR composites have better mechanical properties. When the ratio of S-CNTs/CB/NR was 5 : 20 : 100, the tear strength was improved by ~60%, and the mechanical properties reached a maximum. Dynamical mechanical analysis (DMA) reveals that with increasing content of CNT, the elastic modulus of composites at room temperature increases, and the maximum loss tangent and the corresponding glass transition temperature of composites decrease. 相似文献
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Halloysite nanotubes (HNTs) were investigated concerning their suitability for rubber reinforcement. As they have geometrical similarity with carbon nanotubes, they were expected to impart a significant reinforcement effect on the rubber compounds but the dispersion of the nanofillers is difficult. In this work, HNTs were surface‐modified by plasma polymerization to change their surface polarity and chemistry and used in a natural rubber/butadiene rubber blend in the presence of carbon black. The aim of the treatment was to improve the rubber–filler interaction and the dispersion of the fillers. A thiophene modification of HNTs improved stress–strain properties more than a pyrrole treatment. The surface modification resulted in a higher bound rubber content and lower Payne effect indicating better filler–polymer interaction. Scanning electron microscopy measurements showed an increased compatibility of elastomers and fillers. As visualized by transmission electron microscopy, the thiophene‐modified HNTs formed a special type of clusters with carbon black particles, which was ultimately reflected in the final mechanical properties of the nanocomposites. The addition of HNTs increased loss angle. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献
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杨立宝;陆晓中;陆庆章;孙晓民 《中国塑料》2010,24(4):30-33
考察了玻璃微珠/碳黑用量比对三元乙丙橡胶(EPDM)硫化特性的影响。结果表明,玻璃微珠/炭黑用量比增大时,EPDM胶料的焦烧时间略有延长,最小扭矩和最大扭矩均呈逐步减小的趋势。180 ℃时硫化胶的力学性能优于200 ℃时硫化胶。添加玻璃微珠后,胶料在180 ℃下的正硫化时间缩短近2倍,但200℃下的正硫化时间几乎没有受到任何明显的影响。玻璃微珠会明显减小胶料的硫化温度系数,即添加玻璃微珠后硫化温度对EPDM胶料硫化速度的影响程度将有所减小。 相似文献