膨润土制备分子筛过程中联产白炭黑高效活性白土的工艺研究

提出了以膨润土为基础原料,用低温水热合成技术合成A型分子筛并联产高效活性白土和白炭黑的综合利用方案,避免了合成过程中产生的废酸碱的排放,提高了技术经济上可行性.     

烷基二硫代磷酸锌在丁苯橡胶/白炭黑体系中的应用

研究烷基二硫代磷酸锌TPZ在丁苯橡胶(SBR)/白炭黑体系中的应用.结果 表明:在SBR/白炭黑体系中以TPZ等量替代促进剂DPG,TPZ具有类似促进剂DPG的活化作用,可降低胶料的滚动阻力,且更加环保;少量TPZ作为偶联活化剂用于SBR/白炭黑体系的母炼中,可以减小硅烷偶联剂用量,降低成本,提高填料分散性和偶联效率,...     

白炭黑及其在橡胶工业中的应用研究进展

白炭黑是橡胶工业中的一种重要补强填充剂,具有广阔的应用前景.介绍了白炭黑的制备方法、补强机理以及白炭黑在橡胶领域中的应用研究进展,指出了其今后的发展方向.     

新型活性白炭黑的制备及其在橡胶中的应用

研究了新型活性白炭黑的制备，白炭黑的表面改性机理及在橡胶中的应用，结果表明，新型活性白炭黑是一种很好的橡胶补强剂。     

新型高性能溶聚丁苯橡胶在轮胎胎面胶中的应用

研究白炭黑/炭黑填充的新型高性能溶聚丁苯橡胶（H-SSBR）的各项性能以及填料在硫化胶中的微观分布,并在较佳白炭黑/炭黑并用比下,研究H-SSBR/天然橡胶（NR）并用比对胶料性能的影响。结果表明：随着白炭黑/炭黑并用比的减小,H-SSBR胶料的拉伸强度、拉断伸长率、压缩疲劳温升和耐磨性能提高,抗湿滑性能降低,滚动阻力增大;电镜照片表明,炭黑与白炭黑相互镶嵌分布在H-SSBR橡胶基体中,形成交织的填料网络,可发挥出双相填料的作用。在H-SSBR中并用适量NR,胶料的焦烧时间和正硫化时间缩短,拉断伸长率、撕裂强度和压缩疲劳温升提高,耐磨性能、抗湿滑性能和滚动阻力降低。在H-SSBR中并用适量NR可获得加工和使用性能较佳的绿色轮胎胎面胶。     

丁苯橡胶复合材料应用研究进展

丁苯橡胶无自补强性,制备复合材料是改善其性能的重要途径之一。概述白炭黑、石墨烯、短纤维等与丁苯橡胶制备的复合材料的应用研究进展。建议进一步加强相关理论研究,针对不同应用领域的需求开发多种产品,不断完善优化工艺,进一步拓宽应用领域。     

利用废渣土制备活性白土的研究

本文讨论了由废渣土经湿法活化过程制备脱色用活性白土工艺以及酸浓度、固液比,反应时间,反应温度等对产品性能的影响,得到了脱色率达９８％以上的活性白土产品,探索了工业废综合利用的新途径。     

Morphology and mechanical properties of clay/styrene‐butadiene rubber nanocomposites

Based on the character of a clay that could be separated into many 1‐nm thickness monolayers, clay styrene‐butadiene rubber (SBR) nanocomposites were acquired by mixing the SBR latex with a clay/water dispersion and coagulating the mixture. The structure of the dispersion of clay in the SBR was studied through TEM. The mechanical properties of clay/SBR nanocomposites with different filling amounts of clay were studied. The results showed that the main structure of the dispersion of clay in the SBR was a layer bundle whose thickness was 4–10 nm and its aggregation formed by several or many layer bundles. Compared with the other filler, some mechanical properties of clay/SBR nanocomposites exceeded those of carbon black/SBR composites and they were higher than those of clay/SBR composites produced by directly mixing clay with SBR through regular rubber processing means. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1873–1878, 2000     

冷冻法废轮胎胶粉在丁苯橡胶中的应用研究

研究冷冻法废轮胎胶粉的粒径和用量对丁苯橡胶(SBR)性能的影响。结果表明:随着冷冻法废轮胎胶粉用量的增大,SBR混炼胶的t_(s1)和t_(90)明显缩短,但在胶粉用量达到10份后变化不大,F_L呈增大趋势,F_(max)呈减小趋势,门尼粘度逐渐增大,胶粉粒径对门尼粘度影响不大;SBR硫化胶的100%定伸应力和300%定伸应力逐渐提高,拉伸强度和拉断伸长率逐渐降低,撕裂强度变化不大,阿克隆磨耗量逐渐增大;加入冷冻法废轮胎胶粉后SBR硫化胶的储能模量明显提高,损耗因子增大。     

Understanding the role of ZnO as activator in SBR vulcanizates: Performance evaluation with active,nano, and functionalized ZnO

This study investigates (ZnO)s with different surface features as vulcanization activators in unfilled SBR vulcanizates. ZnO is termed the best activator due to its fast reaction kinetics. A high release of ZnO into the environment harms marine ecosystems, and most ZnO production goes to the rubber sector; therefore, reducing ZnO amount is essential. Active, nano and functionalized ZnO compared to conventional ZnO in SBR matrix; concentration optimized based on curing, mechanical, physical, and dispersion analyses. The Arrhenius equation approximated the cure curve's kinetic constant and activation energy. Crosslink density measured by swelling experiment and solvent freezing point depression. Nano ZnO was used from 0.5 to 2phr, active ZnO from 1 to 4phr, and functionalized ZnO from 1 to 3phr compared to 5phr of conventional ZnO. The tensile strength of N1.5, F1.5, and A2 SBR increased by 5%, 26%, and 18% compared to C5SBR, whose elongation at break improved by 30%, 7%, and 23%. The data were analyzed using tukey HSD post hoc test. Regarding mechanical properties and curing characteristics, 2phr active, functionalized, and 1.5phr nano ZnO is analogous to 5phr conventional ZnO in an unfilled SBR matrix. The quantity of ZnO in rubber vulcanizates decreased successively by 60%, 60%, and 70%.     

改性粘土的偶联效果检测及其作为鞋用混炼胶增强剂的应用

以１％ＷＤ－５０硅烷偶联剂于８０℃处理３０ｍｉｎ的改性粘土为增强剂,用于增强鞋用混炼胶。实验结果表明,其增强效果接近日本产０号沉淀白炭黑的水平。     

高性能橡胶/黏土纳米复合材料的制备与结构

研究了硬脂酸(SA)处理有机黏土(OC)制备橡胶/黏土纳米复合材料的结构与性能,并与未处理的OC制备的纳米复合材料进行了对比。结果表明,SA上的—COOH与OC片层表面的—OH发生了酯化反应,促使SA插层进入OC层间,使层间距扩大。采用SA处理OC制备出分散相态细致均匀、力学性能优异的丁腈橡胶/黏土(NBR/SA-OC)纳米复合材料;当OC与SA的质量比为10∶6时,纳米复合材料的性能最优。用带有极性和反应官能团的橡胶制备橡胶/黏土纳米复合材料,OC的分散性更好,与未处理的OC制备的纳米复合材料相比力学性能更优。     

Improvement of cutting and chipping resistance of carbon black-filled styrene butadiene rubber by addition of nanodispersed clay

A novel, effective approach to improve the cutting and chipping resistance (CCR) of carbon black (CB)-filled styrene butadiene rubber (SBR) composite was reported in this study. CCR of SBR was dramatically improved more than 30% by addition of 4 phr nanodispersed clay (NC), while not decreasing the stress at 100% and the Shore A hardness of the composite. The curing characteristics, loss tangent (tan δ), and the strength of filler network of the composites were further measured by a Disk Oscillating Rheometer and a rubber processing analyzer, respectively. It was found that the addition of NC led to a slightly lower crosslink density, higher tan δ, and stronger filler network, which contributed to the higher CCR. Therefore, the novel layered NC is more efficient in improving CCR when compared with CB. The results are expected to promote the application of NC in rubber industry. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

乳聚丁苯橡胶/白炭黑/偶联剂体系挤出流变特性的研究

本工作研究了白炭黑含量及偶联剂种类对填充丁苯橡胶挤出流变特性的影响,并分析了三种偶联剂的接枝效率。结果表明：在低剪切速率下,白炭黑填充体系的非牛顿指数n与其填充量关系不大;在高剪切速率下,胶料的非牛顿指数随填充量增加而增大。当填充量为40phr时,偶联剂Si747胶料粘度大,Payne效应大,挤出物外观粗糙,有较好的挤出温度稳定性;偶联剂Si69与Si75对白炭黑的改性效果差别不大。     

SBR1502工业试验

在ＳＲＢ１５０２工业试验中，以生产ＳＢＲ１５００的原料为基础，用动物脂肪酸代替合成脂肪酸，同时加入０．６％－１．０％（质量，下同）的防老剂ＳＰ／防老剂ＴＮＰ及０．０６％－０．０７％的硫化促进剂三烷基氯化胺。可获得性能性能达到ＧＢ１２８２４－９１的ＳＢＲ１５０２，该产品分子量及分子量分布与齐鲁ＳＢＲ１５０２产品相当。     

新型防老剂555PD用于丁苯橡胶SBR1500防老化

用热空气老化的方法考察了防老剂555PD不同加入量对丁苯橡胶SBR1500的热空气老化防护性能及物理机械性能的影响。并与防老剂PPDB进行了对比研究。实验结果表明,防老剂555PD热空气防老化性能优于PPDB,对丁苯橡胶物理机械性能没有明显影响,用于丁苯橡胶SBR1500可降低生产成本,具有一定的经济效益。