累托石/SBR纳米复合材料的结构与性能

采用乳液共混共凝法制备累托石／SBR复合材料，研究累托石纯度对材料物理性能的影响，并与蒙脱石／SBR复合材料进行对比。结果表明，累托石／SBR属于纳米复合材料，分散相的形状系数稍高于蒙脱石体系；高纯度累托石是制备性能优异的累托石／sBR纳米复合材料的关键。两种纳米复合材料均具有良好的气密性，累托石／SBR复合材料分散相形状系数略大，气密性更优。两者均可以作为性价比适中的轮胎气密层或内胎材料。     

丁苯橡胶／蒙脱土纳米复合材料在半钢子午线轮胎胎面胶中的应用

对在中试装置上制备的丁苯橡胶（SBR）／蒙脱土（MMT）纳米复合材料——乳液共沉胶在半钢子午线轮胎胎面胶中的应用进行研究。结果表明,SBR／MMT乳液共沉胶是一种插层型纳米复合材料;与SBR纯胶相比,其拉伸强度、撕裂强度、回弹性等相当,耐磨性能大幅度提高,可以替代SBR及部分炭黑用于半钢子午线轮胎胎面胶中。     

SBR粘土纳米复合材料的气密性

对乳液法制备的SBR粘土纳米复合材料的气密性进行了研究,结果表明：SBR粘土纳米复合材料的气密性优于传统填料填充的硫化胶,且随温度的变化较小;填料的用量、形状以及与橡胶的结合性是影响气密性的主要因素;填充20份粘土的纳米复合材料气密性优于NR／SBR内胎,比IIR内胎差。     

炭黑/蒙脱土/SBR纳米复合材料的性能研究

采用少量（0～5份）蒙脱土（MMT）等量替代炭黑，考察炭黑／MMT／SBR纳米复合材料的硬度、强伸性能、耐磨性能和耐屈挠龟裂性能。结果表明，随着炭黑／MMT并用比的减小，炭黑／MMT／SBR纳米复合材料的拉伸强度、撕裂强度和耐屈挠龟裂性能明显提高，耐磨性能有所下降，但降幅不大。     

乳液插层法制备丁苯橡胶/天然橡胶/蒙脱土纳米复合材料的研究

采用乳液插层法制备了丁苯橡胶/天然橡胶/蒙脱土（SBR/NR/MMT）纳米复合材料。采用透射电子显微镜研究了复合材料的亚微观形态,并对复合材料的性能进行了研究。透射电镜结果显示,制备出了插层型的SBR/NR/MMT复合材料。当蒙脱土含量较低时,SBR/NR/MMT纳米复合材料的力学性能随蒙脱土用量的增加而增大。SBR/NR/MMT复合材料的耐油性能随蒙脱土含量的增加而提高。蒙脱土的加入对纳米复合材料的耐磨性能没有太大影响。     

SBR/有机蒙脱土纳米复合材料的结构与性能研究

通过控制加入芳烃油、相容剂，采用乳液插层法制得了2种不同亚微观结构的SBR／有机蒙脱土（0MMT）纳米复合材料。透射电镜显示制得了插层型和半剥离型纳米复合材料。实验结果表明：炭黑N330的加入，降低了复合材料的延迟硫化现象，改善了复合材料的加工性能；SBR／OMMT／N330纳米复合材料具有优异的力学性能，其耐磨性能下降。     

硅烷偶联剂对蒙脱土/NR纳米复合材料气体阻隔性能的影响

试验研究硅烷偶联剂对蒙脱土（MMT）／NR纳米复合材料性能的影响。结果表明，在MMT／NR复合材料中加入硅烷偶联剂，可提高复合材料的物理性能、耐热空气老化性能、气体阻隔性能和热稳定性。硅烷偶联剂KH-560的改性效果最好，其最佳用量为3份。     

蒙脱土/橡胶纳米复合材料的研究进展

概述了蒙脱土／橡胶纳米复合材料的结构、制备方法及性能，并展望了其应用前景。根据蒙脱土片层的分散情况可将蒙脱土/橡胶纳米复合材料分为普通型、插层型和剥离型；复合材料的制备方法包括单体插层原位聚合法、橡胶溶液插层法、液体橡胶插层法、橡胶乳酸插层法、橡胶熔体插层法及小分子与大分子的结合插层法；复合材料具有良好的加工性能、优异的力学性能及阻隔性能等，广泛用于轮胎内胎、气密层、胶带、胶鞋等制品。     

纳米碳酸钙在NR/SBR内胎中的应用

试验研究以纳米碳酸钙替代活性硅粉在NR／SBR内胎中的应用效果。结果表明,以纳米碳酸钙等量替代活性硅粉,胶料的综合物理性能有所提高;以25份纳米碳酸钙替代20份活性硅粉,可改善胶料的加工性能,提高内胎的拉断伸长率和撕裂强度,降低内胎胶成本,内胎气密性略有提高。     

稀土偶联剂WOT对纳米碳酸钙/SBR复合材料性能的影响

采用稀土偶联剂WOT对纳米碳酸钙进行表面改性,通过机械共混法制备纳米碳酸钙/SBR复合材料,研究其性能,并与硅烷偶联剂KH-560进行对比。结果表明,与硅烷偶联剂KH-560相比,稀土偶联剂WOT改性复合材料的加工性能较优,拉伸强度和拉断伸长率较高,稀土偶联剂WOT的最佳用量为1.6份;两种偶联剂均能改善纳米碳酸钙在SBR胶料中的分散性,提高复合材料的动态力学性能。     

Preparation,structure, and properties of a novel rectorite/styrene–butadiene copolymer nanocomposite

Rectorite/styrene–butadiene copolymer (SBR) nanocomposite was prepared by cocoagulating SBR latex and rectorite/water suspension. Transmission electron microscopy showed that the layers of rectorite were well dispersed in the SBR matrix and the aspect ratio (width/thickness) of it was higher than that of montmorillonite (MMT). X‐ray diffraction indicated that the nanocomposite produced by this method was of neither intercalated type nor exfoliated type. The gas barrier properties and mechanical properties of the novel nanocomposites were excellent. The nanocomposites are expected to be candidates for tire tube or inner materials. Rectorite appears to be a promising filler for the nanocomposite. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 324–328, 2005     

SBR-clay-carbon black hybrid nanocomposites for tire tread application

Styrene butadiene rubber-organoclay nanocomposites were prepared with Cloisite 15A via melt intercalation. X-ray diffraction and transmission electron microscopy indicated that the nanostructures are partially exfoliated and intercalated. The nanocomposites exhibited great improvements in tensile strength and tensile modulus. The incorporation of organoclay gave rise to considerable reduction of tan delta and increase in storage modulus in the rubbery region. It is shown that after 6 phr (parts per hundred rubber) clay loading there is not much increase in the properties. The effect of carbon black (N330) on mechanical properties, dynamic mechanical properties, heat build up, abrasion resistance in the nanocomposites having the optimized clay level (6 phr) was investigated. Optimum results were obtained with the addition of 25 phr carbon black. For comparison with the 6phr nanoclay and 25phr N330 (high abrasion furnace carbon black) filled SBR composites, 40 phr N330 filled SBR composites was used. The 6phr organoclay and 25phr N330 filled SBR nanocomposite showed better properties than 40phr carbon filled SBR compound. These results indicate that 6phr organoclay can be replaced by 15 phr carbon black from the conventional SBR-carbon black based tire tread compounds. The Dynamic mechanical analyzer (DMA) results revealed that the new tire tread compound gives better rolling resistance and comparable wet grip resistance and lower heat build up than that of conventional tread compound.     

莱茵新Rhenosin TT100在轮胎胎面配方中的应用

研究了莱茵新Rhenosin TT100时NR／BR／SBR胎面胶硫化特性、物理机械性能和发黑与其它配合剂在肢料中的分散性以度耐磨性能的影响。结果表明，谈助剂加入NR／BR／SBR配方中可以明显改善炭黑等配合剂在胶料中的分散性，提高挤出胎面肢断面的致密性，提高了撕裂性能、耐磨性。轮胎实际里程试验表明，采用2份Rhenosin TT100的胎冠肢的轮胎耐磨性优异。     

Novel fabrication of disorderly exfoliated sodium montmorillonite in a styrene–butadiene rubber matrix

Using industrial technologies, we prepared a sodium montmorillonite (Na‐MMT) slurry and an irradiated styrene–butadiene rubber (SBR) latex, and then spray dried them to produce a novel, ultrafine fully vulcanized powder SBR (UFPSBR)/Na‐MMT nanocompound powder in which the nanoscale UFPSBR particles and exfoliated Na‐MMT were isolated and stuck together. When the UFPSBR/Na‐MMT nanocompound powder was mixed with crude SBR, the exfoliated Na‐MMT was disorderly dispersed in the SBR matrix because of the carrier nature of the UFPSBR particle, which is compatible with SBR and disperses easily in the SBR matrix, and the SBR/UFPSBR/Na‐MMT ternary nanocomposite was prepared. When compared with SBR/Na‐MMT binary composites, the SBR/UFPSBR/Na‐MMT ternary nanocomposite has a shorter vulcanization time, higher strength, and better flame retardancy because of the good dispersion of exfoliated Na‐MMT in the SBR matrix with a Na‐MMT loading range of 4 phr. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2013     

环保低味精细胎面再生胶在轿车子午线轮胎胎面胶中的应用

试验研究环保低味精细胎面再生胶在轿车子午线轮胎胎面胶中的应用。结果表明,在SBR／BR胎面胶中添加5份环保低味精细胎面再生胶,并适当提高硫化体系用量,胶料物理性能完全满足胎面胶性能要求,成品轮胎高速性能和耐久性能优良,生产成本降低。     

Preparation,characterization, and application of NR/SBR/Organoclay nanocomposites in the tire industry

The natural rubber/styrene butadiene rubber/organoclay (NR/SBR/organoclay) nanocomposites were successfully prepared with different types of organoclay by direct compounding. The optimal type of organoclay was selected by the mechanical properties characterization of the NR/SBR/organoclay composites. The series of NR/SBR/organoclay (the optimal organoclay) nanocomposites were prepared with various organoclay contents loading from 1.0 to 7.0 parts per hundreds of rubber (phr). The nearly completely exfoliated organoclay nanocomposites with uniform dispersion were confirmed by transmission electron microscopy (TEM) and X‐ray diffraction (XRD). The results of mechanical properties measurement showed that the tensile strength, tensile modulus, and tear strength were improved significantly when the organoclay content was less than 5.0 phr. The tensile strength and the tear strength of the nanocomposite with only 3.0 phr organoclay were improved by 92.8% and 63.4%, respectively. It showed organoclay has excellent reinforcement effect with low content. The reduction of the score and cure times of the composites indicated that the organoclay acted as accelerator in the process of vulcanization. The incorporation of a small amount of organoclay greatly improved the swelling behavior and thermal stability, which was attributed to the good barrier properties of the dispersed organoclay layers. The outstanding performance of co‐reinforcement system with organoclay in the tire formulation showed that the organoclay had a good application prospect in the tire industry, especially for the improvement of abrasion resistance and the reduction of production cost. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

Study on flammability of montmorillonite/styrene‐butadiene rubber (SBR) nanocomposites

The flammability of montmorillonite (MMT)/SBR nanocomposites, prepared by the technique of cocoagulating rubber latex and clay aqueous suspension, was investigated. Flammability studies, performed on the cone calorimeter, showed that the maximum heat release rate (HRR) of SBR decreased from 1987 to 1442 kw/m² with the introduction of nanoclay (20 phr). This nanocomposite had the lowest mass loss rate and the largest amount of char upon combustion compared with conventional SBR composites with the same clay loading and pure SBR. The permeability properties of MMT/SBR composites were also measured. It was deduced that the lowered permeability was responsible for the reduced mass loss rate and hence the lower HRR. Unfortunately, the oxygen index (OI) of the nanocomposites was not as high as expected. Combination of Mg(OH)₂ and clay was effective for the improvement of both mechanical properties and OI. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 844–849, 2005     

蒙脱土改性纳米复合乳液的研究进展

纳米技术是一项前沿科学技术,目前,聚合物,蒙脱土纳米复合材料是重要的工程材料之一。由于蒙脱土具有层状硅酸盐的特殊结构,使得聚合物,蒙脱土纳米复合材料的各项性能均得到较大改善。介绍了蒙脱土的特性及其复合材料的结构,详细介绍了近年来国内外学者采用共混法和插层聚合法制备蒙脱土改性纳米复合乳液所做的研究工作。对蒙脱土改性不同乳液的应用研究现状进行了综述。指出了乳液法制备聚合物／蒙脱土纳米复合材料研究中存在的问题和应努力的方向。     

复合氧化锌胶料的性能研究

试验研究复合氧化锌对NR和SBR胶料及斜交轮胎胎侧胶和胎面基部胶性能的影响.结果表明,当氧化锌用量超过2.5份后,采用复合氧化锌的NR或SBR胶料硫化特性、物理性能和耐热老化性能与采用间接法氧化锌的胶料接近;采用复合氧化锌等量替代间接法氧化锌用于斜交轮胎,胎侧胶性能变化不大,胎面基部胶物理性能有所提高,胶料成本降低.     

Styrene butadiene rubber/clay nanocomposites for tire tread application

Homogeneous and stable dispersion of layered silicates in their rubber nanocomposite is a matter of interest as it can significantly affect the material properties. Herein we propose a facile and easily industrialised approach for preparing highly dispersed montmorillonite (MMT)/rubber nanocomposites by the latex compounding method. Furthermore, an efficient way of enhancing the interlayer spaces of organically modified MMT (f-MMT) with alkyl-ammonium chains while mixing the styrene butadiene rubber (SBR) is reported. The f-MMT embedded SBR matrix shows a remarkable improvement of the modulus and tensile strength even in the low loading rate, which is ascribed to the well dispersion of the f-MMT enhancing interfacial interaction with the rubber matrix. Furthermore, we manufactured the practical pneumatic tire using f-MMT/SBR nanocomposite with outstanding wear resistance, grip performance and low-rolling resistance for the green tire application, opening up enormous opportunities to prepare high-performance rubber composites for future engineering applications.