氯丁橡胶对炭黑/白炭黑填充溶聚丁苯橡胶性能的影响

研究了氯丁橡胶（CR）对白炭黑/炭黑并用填充溶聚丁苯橡胶（SSBR）的性能和填料分散的影响。结果表明,加入CR可提高炭黑/白炭黑填充SSBR的性能,当CR用量为4份时,硫化胶综合力学性能最佳;TEM观察表明,填料与SSBR基体界面模糊,填料分散较均匀,填料网络化程度降低。     

白炭黑和白炭黑/炭黑并用补强末端基改性溶聚丁苯橡胶/顺丁橡胶并用胶的性能研究

研究白炭黑和白炭黑/炭黑并用补强单、双末端基改性溶聚丁苯橡胶(SSBR)/顺丁橡胶(BR)并用胶的性能。结果表明:SSBR末端基改性,尤其是双末端基改性,能够显著提高SSBR与白炭黑的相容性,从而提高SSBR/BR并用胶的综合物理性能和动态力学性能;SSBR的末端基改性效果在白炭黑/炭黑并用时不能有效发挥,白炭黑/炭黑并用补强末端基改性SSBR/BR并用胶的综合物理性能和动态力学性能均逊于白炭黑补强末端基改性SSBR/BR并用胶。     

炭黑/白炭黑双相填料的配比对溶聚丁苯橡胶性能的影响

考察了用白炭黑取代部分炭黑作为填充剂对溶聚丁苯橡胶(SSBR)硫化胶物理机械性能和动态力学性能的影响。结果表明,采用炭黑/白炭黑双相填料可以提高SSBR硫化胶的物理机械性能和动态力学性能,原因在于双相填料增强了填料与橡胶大分子之间的相互作用,提高了填料在橡胶基质中的分散性。当用20份白炭黑与30份炭黑组成双相填料时,SSBR硫化胶的各项性能达到最佳。     

白炭黑/炭黑共混比对溶聚丁苯橡胶性能的影响

研究了白炭黑/炭黑共混比对部分端基硅偶联和非偶联环保型SSBR的物理机械性能和动态力学性能的影响。结果表明,填料总量不变时,随着白炭黑用量的增加,橡胶与填料间的相互作用增强,部分端基硅偶联橡胶与填料的相互作用更强;体系中白炭黑含量增加,硫化胶的抗湿滑性、耐磨性提高,滚动阻力下降;可根据实际使用要求选择合适的白炭黑/炭黑并用比。     

炭黑、白炭黑加入顺序对NR/SSBR胶料性能的影响

通过改变炭黑、白炭黑的加料顺序,探讨了炭黑/白炭黑在不同并用比下（75/25,50/50）在天然橡胶（NR）与溶聚丁苯橡胶（SSBR）共混体系中的最佳加入顺序。结果表明,炭黑、白炭黑的加入顺序并不是绝对的,炭黑/白炭黑并用比为75/25时（填料总量为45份）,先加白炭黑有利于白炭黑的分散,硫化胶物理机械性能较好,压缩生热较低,动态力学性能较好;当炭黑/白炭黑并用比为50/50时,炭黑/白炭黑一起加入得到的硫化橡胶性能较好。     

白炭黑/炭黑并用对溶聚丁苯橡胶/顺丁橡胶复合材料性能的影响

研究了白炭黑分别与3种不同牌号的炭黑并用对溶聚丁苯橡胶/顺丁橡胶(SSBR/BR)复合材料硫化特性、力学性能、压缩生热、耐切割性能、耐磨性能、抗湿滑性能以及动态力学性能等的影响。结果表明,白炭黑与炭黑并用后,胶料的焦烧时间缩短,填料网络结构增强,生热和滚动阻力升高,力学性能提高,玻璃化转变温度降低,耐切割性能和抗湿滑性能下降;随着并用炭黑粒径的增大,胶料的焦烧时间缩短,生热和滚动阻力降低,耐磨性能和抗湿滑性能下降。     

白炭黑/炭黑/SBR复合材料的结构和抗静电性研究

采用高温共混技术制备白炭黑/炭黑/溶聚丁苯橡胶(SSBR)和白炭黑/炭黑/乳聚丁苯橡胶(ESBR)复合材料,并分别对其结构和性能进行研究.结果表明,在填充剂总量不变的前提下,随着白炭黑用量的增大,白炭黑/炭黑/SSBR和白炭黑/炭黑/ESBR复合材料物理性能呈现加和效应的特点,动态性能提高,表面电阻和体积电阻率增大;白炭黑/炭黑/SSBR复合材料物理性能与白炭黑/炭黑/ESBR复合材料差别较小,但前者动态性能较好;添加导电炭黑使复合材料抗静电性提高、物理性能下降;当白炭黑/炭黑并用比为35/35、导电炭黑用量不大于5份时,白炭黑/炭黑/SSBR复合材料的综合性能较好.     

双相填料中白炭黑种类对溶聚丁苯橡胶/顺丁橡胶共混胶磨耗性能的影响

采用不同种类白炭黑与同种炭黑作为双相填料填充溶聚丁苯橡胶(SSBR)与顺丁橡胶(BR)共混胶,研究了不同白炭黑与SSBR/BR共混胶间相互作用对其磨耗性能的影响规律。结果表明,在Akron磨耗测试条件下,炭黑/白炭黑双相填料填充的SSBR/BR共混胶主要经受磨粒磨耗和卷曲磨耗的耦合作用。当白炭黑平均粒径增大且粒径分布不均匀时,白炭黑与橡胶基质间的相互作用较弱,硫化胶硬度和磨耗性能下降,在磨耗耦合作用机理中卷曲磨耗所起的作用越来越大。     

充环烷油溶聚丁苯橡胶的实用配合研究

研究补强体系、生胶并用和硫化体系对充环烷油的溶聚丁苯橡胶(SSBR)胶料性能的影响。结果表明:对纯炭黑补强体系,炭黑用量为75份的胶料的综合性能较好,两种炭黑并用体系的胶料的综合性能提高,但耐磨性能稍差,对炭黑/白炭黑并用补强体系,白炭黑用量为20份的胶料的综合性能优异,继续增大白炭黑用量,填料分散性和胶料性能下降;SSBR并用20份顺丁橡胶,胶料的压缩生热和滚动阻力降低,耐磨性能提高,耐老化性能优异,其他性能满足使用要求;在硫化体系中硫黄用量对SSBR胶料性能的影响最大,硫黄的适宜用量为1.4～1.6份。     

微晶纤维素在溶聚丁苯橡胶/顺丁橡胶并用胶中的应用

研究微晶纤维素部分替代白炭黑对溶聚丁苯橡胶(SSBR)/顺丁橡胶(BR)并用胶性能的影响。结果表明:在白炭黑或白炭黑/炭黑填充SSBR/BR并用胶中,当微晶纤维素用量不超过9份时,硫化胶的物理性能变化不大;当微晶纤维素用量超过9份时,硫化胶的物理性能下降;随着微晶纤维素用量的增大,胶料的门尼粘度总体减小,填料的网络化程度降低,Payne效应减弱,损耗因子减小。     

Application of rice husk ash as fillers in the natural rubber industry

Rice husk ash (RHA) obtained from agricultural waste, by using rice husk as a power source, is mainly composed of silica and carbon black. A two‐stage conventional mixing procedure was used to incorporate rice husk ash into natural rubber. For comparison purposes, two commercial reinforcing fillers, silica and carbon black, were also used. The effect of these fillers on cure characteristics and mechanical properties of natural rubber materials at various loadings, ranging from 0 to 40 phr, was investigated. The results indicated that RHA filler resulted in lower Mooney viscosity and shorter cure time of the natural rubber materials. The incorporation of RHA into natural rubber improved hardness but decreased tensile strength and tear strength. Other properties, such as Young's modulus and abrasion loss, show no significant change. However, RHA is characterized by a better resilience property than that of silica and carbon black. Scanning electron micrographs revealed that the dispersion of RHA filler in the rubber matrix is discontinuous, which in turn generates a weak structure compared with that of carbon black and silica. Overall results indicate that RHA can be used as a cheaper filler for natural rubber materials where improved mechanical properties are not critical. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 34–41, 2005     

原位聚合ZDMA与炭黑并用补强POE的研究

研究了原位聚合甲基丙烯酸锌(ZDMA)与炭黑并用以及体系的填充量、ZDMA理论生成量、ZnO/MMA摩尔比对聚烯烃弹性体(POE)硫化胶性能的影响.结果表明,加入炭黑改善了胶料的拉伸永久变形,当ZDMA与炭黑的用量为50～60份时,填料分散好,对胶料的补强效果显著.ZDMA理论用量为30～40份、ZnO/MMA摩尔比为0.75左右时,胶料的综合力学性能最好.     

炭黑/白炭黑共混比对BR/SBR性能的影响

研究了炭黑N234/白炭黑175Gr共混比对BR/SBR共混胶加工性能、物理机械性能和动态物理机械性能的影响。研究表明,当填料总用量不变时,炭黑/白炭黑共混能有效减弱填料网络的形成。当质量比为40/40时,共混胶佩恩效应最低,门尼粘度最小,物理机械性能最好;加入硅烷偶联剂可使白炭黑与橡胶产生化学结合,提高了化学交联密度,使硫化胶回弹性提高,动态损耗因子降低,有利于降低轮胎滚动阻力。     

Effect of filler dispersion on the electrical conductivity and mechanical properties of carbon/polypropylene composites

Conducting carbon/polypropylene composites containing a mixed filler of crystalline natural graphite powder, carbon black, and multiwalled carbon nanotubes have been prepared. The effect of the filler dispersion on the electrical conductivity and mechanical properties has been studied. Keeping the graphite content constant and increasing the ratio of carbon black to nanotubes, the conductivity and the flexural modulus increased linearly at different graphite contents. Graphite aggregates on the cross sections were analyzed by optical microscopy to characterize the dispersion of graphite. The results of the optical microscopy studies showed that the dispersion of graphite is affected by the composition and amount of the nanofiller system. Based on the observations simplified morphological models were set up, that allowed to explain the change in the electrical and mechanical properties of the composites of different compositions. POLYM. COMPOS., 34:1195–1203, 2013. © 2013 Society of Plastics Engineers     

纳米白炭黑/炭黑并用对SBR硫化胶性能的影响

研究了纳米白炭黑／炭黑并用体系对ＳＢＲ硫化胶物理性能及磨耗形态的影响,并提出了补强模型。结果表明,纳米白炭黑／炭黑并用体系可提高补强效果,当其并用比为６／２４时,硫化胶的拉伸强度和撕裂强度最大,耐磨性最佳。硫化胶补强性能的提高,一方面需要粒子与大分子之间有较强的结合力,另一方面还需要粒子表面上的产生滑移。     

石墨及其表面改性对硅橡胶导热性能的影响

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。     

Properties of natural rubber composites reinforced with silica or carbon black: influence of cure accelerator content and filler dispersion

Filler dispersion is a critical factor in determining the properties of filled rubber composites. Silica has a high density of silanol groups on the surface, which lead to strong filler–filler interactions and a poor filler dispersions. A cure accelerator, N‐tert‐butyl‐2‐benzothiazole sulfenamide (TBBS), was found to improve filler dispersion in silica‐filled natural rubber (NR) compounds. For the silica‐filled NR compounds without the silane coupling agent, the reversion ratio generally increased with increase in TBBS content, whereas those of the silica‐filled NR compounds containing the silane coupling agent and carbon black‐filled NR compounds decreased linearly. The tensile strength of the silica‐filled NR vulcanizate without the silane coupling agent increased as the TBBS content increased, whereas carbon black‐filled samples did not show a specific trend. The experimental results were explained by TBBS adsorption on the silica surface and the improvement of silica dispersion with the aid of TBBS. Copyright © 2003 Society of Chemical Industry     

Synthesis and characterization of maleated glycidyl 3‐pentadecenyl phenyl ether as a functionalized plasticizer for styrene–butadiene rubber/carbon black/silica composites

Maleated glycidyl 3‐pentadecenyl phenyl ether (M‐GPPE) was synthesized from glycidyl 3‐pentadecenyl phenyl ether (GPPE), a renewable derivative from cardanol, with maleic anhydride (MAH) by grafting copolymerization. The resulting M‐GPPE was used as a functionalized plasticizer for a styrene–butadiene rubber (SBR)/carbon black (CB)/silica composite. The effects of M‐GPPE on the development of the filler network, the extent of silica dispersion, the curing characteristics, and the mechanical performance of the composites were studied. Meanwhile, a comparative study was performed between M‐GPPE and aromatic oil, a traditional plasticizer used in SBR filler formulations. Gel permeation chromatography and IR and ¹H‐NMR analysis results confirmed the occurrence of the grafting reaction between GPPE and MAH and the potential structure of M‐GPPE. The thermostability of GPPE was improved by grafting copolymerization with MAH, as shown by thermogravimetric analysis results. The presence of M‐GPPE resulted in a shorter curing time and better aging properties in the SBR composite compared with GPPE. The mechanical properties, dynamic mechanical analysis, and transmission electron microscopy analysis showed that the maleate of GPPE could enhance the compatibility between SBR and silica, improve the dispersion of silica in SBR, and partially replace the aromatic oil in the SBR/CB/silica composite formulation. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40462.     

加料顺序对炭黑/NR相互作用及性能的影响

研究了加料顺序对炭黑/NR间相互作用及胶料性能的影响。结果表明,配方相同时,采用先加小料后加炭黑的加料顺序可使混炼过程能耗最低,混炼胶加工性能较好,综合物理机械性能较好;加料顺序对交联密度基本没有影响;在混炼过程中,加入小料会迅速降低胶料扭矩值,起到增塑作用,有利于分散;提前加入炭黑会增强炭黑/NR间相互作用,生成较多结合橡胶。