锡偶联S-SBR/BR并用胶性能的研究

研究了国产锡偶联Ｓ－ＳＢＲ／ＢＲ并用胶料的加工性能、物理性能及动态生热特性。研究结果表明,锡偶联Ｓ－ＳＢＲ加入适量均匀剂后门尼粘度可与ＢＲ相近;随ＢＲ并用量的增大,共混胶料的耐屈挠以及耐磨性能都有所提高,生热略有降低,强力性能下降;锡偶联Ｓ－ＳＢＲ／ＢＲ并用比为６０／４０,填充体系选用炭黑Ｎ２３４时,硫化胶综合性能达到最佳。     

丁腈橡胶－40／三元共聚型氯醚橡胶并用的研究

对丁腈橡胶－４０（ＮＢＲ－４０）与三元共聚型氯醚橡胶（ＣＨＣ）进行了并用研究．发现二者之间的相容性良好。ＮＢＲ－４０／ＣＨＣ并用比为８０／２０时，胶料的综合物理性能较好；为７０／３０时．胶料耐４０＃机油的性能最好；耐四氯化碳溶剂的性能随并用比的减小（ＣＨＣ用量增加）而提高。胶料硫化体系以过氧化物硫化体系［过氧化二异丙苯（ＤＣＰ）／硫黄／四氧化三铅／促进剂ＮＡ－２２］最佳，补强剂选用中超耐磨炭黑。     

炭黑,白炭黑,特殊填充剂与胶种相配合以冬用防滑胎面胶上的应用

以提高轮胎在冰雪路面上的抗滑性为主要研究方向，着眼提高防滑性能，就炭黑与白炭黑对胎面胶防滑性能的影响做了深入的探讨与研究，得出胶料的最佳配比为ＮＲ／ＳＢＲ１５００／ＢＲ＝６０／２０／２０；炭黑的最佳配比为ＨＡＦ－ＬＳ／ＩＳＡＦ－ＨＳ＝１：２；白炭黑的最佳用量为１２份，配方中适量加入Ａｌ２Ｏ３有利于提高胎面胶的抗湿滑性和抗冰滑性的结论。并对中心复合旋转设计法在橡胶配方最优设计中的应用情况作了介绍。     

使用沉淀白炭黑提高BIIR气密层的性能第2部分：氧化镁和偶联剂的影响

前文证明一种新的高分散性、低比表面积沉淀白炭黑（ＳＢＥＴ＝７４ｍ２·ｇ－１）是有吸引力的气密层胶料填充剂。调整配方后，这种白炭黑解决了气密层炭黑胶料疲劳问题并改善了大多数性能。研究了不同的偶联剂。全填充白炭黑的ＢＩＩＲ胶料的主要老化机理与炭黑胶料明显不同。恰当调整氧化镁含量，可改善白色胶料的耐老化性能。我们证实了填充白炭黑的胶料老化前３００％定伸应力越高（偶联），耐疲劳性能越好，填充炭黑的胶料则相反。     

改善以炭黑/白炭黑双相填料为基础的绿色轮胎胎面胶加工和物理性能的加工助剂

目前生产的大多数绿色轮胎使用的胎面胶均以在Ｓ ＳＢＲ/ＢＲ中添加硅烷偶联的高分散白炭黑为基础。这些胶料有其自身带来的问题 ,轮胎业有可能采用以炭黑为基础的胶料获得绿色轮胎的性能。已发表的若干文献指出 ,使用新开发炭黑制备的胶料 ,可以达到目前绿色轮胎中所用胶料的性能。虽然这些炭黑胶料的性能接近绿色轮胎胶料 ,但它们在混炼等加工性能方面却存在问题。在绿色轮胎胎面胶填料领域最有意义的研究成果之一是炭黑 /白炭黑双相填料。示出的数据证实 ,使用这种双相填料可以获得与白炭黑胶料相同的性能。在母炼胶混炼过程中添加加工助…     

锡偶联型SSBR的动态行为

研究了锡产型ＳＳＢＲ混炼胶及其硫化胶的动态力学性能,并与ＥＳＢＲ做了对比。结果表明,锡偶联型ＳＳＢＲ混炼胶比ＥＳＢＲ,的弛豫速度快,挤出胀在效应小,塑／弹比随频率减小的幅度大;锡偶联型ＳＳＢＲ硫化胶的ｔａｎδ比ＥＳＢＲ的小,生热低;日本产牌号为ＳＬ５５２胶料的ｔａｎδ随形变而增值幅度小的现象的体现了锡偶联结构有助于炭黑的高度分散及提高大分子与炭黑间结合强度。     

白炭黑特性对橡胶和轮胎胶料性能的影响

研究了通过对沉淀法白炭黑物性的测试来预测胶料性能的效果。所采用的两种配方是：用于模压鞋底的白炭黑填充ＮＲ／ＳＢＲ并用混炼胶和用于越野轮胎胎侧的白炭黑一炭黑填充ＮＲ胶料。     

拖拉机轮胎全SR胎面的研制

研究了用全ＳＲ制做７．５０－１６（人）拖拉机轮胎胎面。结果表明，胎面胶胶料生胶采用ＳＢＲ１５００／ＳＢＲ１７１２（６０／４０）或ＳＢＲ１５００／ＢＲ／ＳＢＲ１７１２（５０／３０／２０）并用体系均可；炭黑选用炭黑Ｎ３３９最好；软化剂选用芳烃油，用量宜较高；增粘剂选用ＲＸ－８０树脂。全ＳＲ胎面硫化胶的强撕性能、耐磨性能较好，成品轮胎性能符合国家标准，实际里程试验的花纹磨耗量低于现在生产轮胎。     

吉尔130汽车发动机供油系统O形密封圈的研制

含有活性添加剂的Ｍ－８＿Ｂ１和Ｍ－８＿Ｔ２Ｋ的两种油品对ＮＢＲ－１８Ｏ形密封圈有一定的副作用，通过调整ＮＢＲ胶料硫化体系（硫黄０．３；促进剂ＣＺ１．５；促进剂Ｍ０．５；硫化剂ＤＣＰ２．０）和补强剂炭黑的用量（高耐磨炭黑５５；喷雾炭黑４０）．可以使其满足抗两种油品侵蚀的性能要求。另外，在ＮＢＲ胶料中添加２５份耐寒增塑剂（邻苯二甲酸二丁酯１０；癸二酸二辛酯１５）．可提高胶料的耐低温性能，并使脆性温度降至－６５℃以下。     

白炭黑/偶联剂补强橡胶的性能研究

研究炭黑N330／白炭黑并用比和偶联荆品种及用量对NR胶料性能的影响。结果表明，硅烷偶联剂Si69对白炭黑的改性效果优于钛酸酯偶联剂；硅烷偶联剂Si69在NR胶料中的最佳用量以补强剂用量的5％～10％为宜；建立的数学模型能较好地拟合炭黑N330／白炭黑并用比和硅烷偶联剂Si69用量与NR胶料各项性能之间的关系。     

均匀设计方法在S-SBR/NR/BR三元共混胎面胶配方设计中的应用

采用均匀设计方法对溶聚丁苯橡胶 (S SBR) /NR/BR三元共混胎面胶配方进行了预测和优选 ,并用三角坐标图表征了生胶并用比与硫化胶物理性能 ,尤其是生热性能的关系。研究结果表明 ,当S SBR/NR/BR并用比为 60 /10 /30或 60 /2 0 /2 0时 ,胎面胶的物理性能较好     

动态硫化SBR/PP共混物力学性能的研究

研究了不同共混比,不同类型SBR及不同硫化体系对动态硫化SBR／PP共混物力学性能的影响,试验结果表明,SBR／PP共混物的最佳共混比为60／40,E－SBR／PP共混物的力学性能稍好于S－SBR／PP共混物;采用硫黄硫化体系的共混物的力学性能优于采用过氧化物和酚醛树脂硫化体系的共混物;动态硫化SBR／PP共混物的交联密度低于静态硫化SBR母炼胶的交联密度。     

碱法制备蔗渣纳米纤维素/丁苯橡胶复合材料性能

针对目前硫酸法制备纳米纤维素高污染、高危险、高处理成本的缺点,采用环境友好、低能耗、低成本的碱法从蔗渣中制备纳米纤维素（2-BNC）,补强丁苯橡胶（SBR）,并与硫酸法制备的纳米纤维素（S-BNC）以及白炭黑（silica）补强SBR的性能进行对比,探究2-BNC的加入对复合材料性能的影响。结果表明,2-BNC在基体中的分散性优于silica,与SBR基体有良好的界面结合,在同等填料份数下,SBR/2-BNC硫化胶的储能模量高于SBR/silica硫化胶,损耗因子下降,耐磨耗性能更加突出,且力学性能更佳;2-BNC和S-BNC对SBR的整体补强效果相当。     

Preparation and properties of octadecylamine modified graphene oxide/styrene‐butadiene rubber composites through an improved melt compounding method

Octadecylamine modified graphene oxide/styrene‐butadiene rubber (GO‐ODA/SBR) composites are prepared by a novel and environmental‐friendly method called “Improved melt compounding”. A GO‐ODA/ethanol paste mixture is prepared firstly, and then blended with SBR by melt compounding. GO‐ODA sheets are uniformly dispersed in SBR as confirmed by scanning electron microscope, transmission electron microscopy, and X‐ray diffraction. The interfacial interaction between GO‐ODA and SBR is weaker than that between GO and SBR, which is proved by equilibrium swelling test and dynamic mechanical analysis. GO‐ODA/SBR show more pronounced “Payne effect” than GO/SBR composites, indicating enhanced filler networks resulted from the modification of GO with ODA. GO‐ODA/SBR composite has higher tensile strength and elongation at break than SBR and GO/SBR composite. The tensile strength and elongation at break for the composite with 5 parts GO‐ODA per hundred parts of rubber increase by 208% and 172% versus neat SBR, respectively. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 42907.     

Curing Characteristics and Mechanical and Morphological Properties of Styrene Butadiene Rubber/Virgin Acrylonitrile-Butadiene Rubber (SBR/vNBR) and Styrene Butadiene Rubber/Recycled Acrylonitrile-Butadiene Rubber (SBR/rNBR) Blends

Curing characteristics and mechanical and morphological properties of styrene butadiene rubber/virgin acrylonitrile-butadiene rubber (SBR/vNBR) and styrene butadiene rubber/recycled acrylonitrile-butadiene rubber (SBR/rNBR) were investigated. Results indicated that the curing characteristics, such as scorch time, t₂, and cure time, t₉₀, of SBR/vNBR and SBR/rNBR blends decreased with increasing vNBR and rNBR content. At similar blend ratios, particularly up to 15 phr, SBR/rNBR blends exhibited higher t₂ and t₉₀ compared with SBR/vNBR blends. Minimum torque (ML) and maximum torque (MH) of SBR/vNBR blends significantly increased with increasing vNBR content. For SBR/rNBR blends, ML increased with increasing rNBR content, but MH exhibited the opposite trend. Tensile strength, elongation at break (E_b), resilience, and fatigue decreased with increasing virgin and recycled NBR content in both blends. Up to 15 phr, the tensile strength, E_b and fatigue life (Kc) of SBR/rNBR blends were higher than in SBR/vNBR blends. The M100 (stress at 100% elongation), hardness, and cross-linking density of both blends also showed an increasing trend with increasing vNBR and rNBR content. The scanning electron microscopy study indicates that rNBR exhibited a weak rNBR-SBR matrix interaction particularly when more than 15 phr of rNBR was used, thus decreasing the mechanical properties of SBR/rNBR blends.     

Particle size distribution,mixing behavior,and mechanical properties of carbon black (high‐abrasion furnace)–filled powdered styrene butadiene rubber

High‐abrasion furnace black (HAF, grade N330)–filled powdered styrene butadiene rubber [P(SBR/HAF)] was prepared and the particle size distribution, mixing behavior in a laboratory mixer, and mechanical properties of P(SBR/HAF) were studied. A carbon black–rubber latex coagulation method was developed for preparing carbon black–filled free‐flowing, noncontact staining SBR powders, with particle diameter less than 0.9 mm, under the following conditions: carbon black content > 40 phr, emulsifier/carbon black ratio > 0.02, and coating resin content > 2.5 phr. Over the experimental range, the mixing torque τ_α of P(SBR/HAF) was not as sensitive to carbon black content and mixing temperature as that of HAF‐filled bale SBR (SBR/HAF), whereas the temperature build‐up ΔT showed little dependency on carbon black content. Compared with SBR/HAF, P(SBR/HAF) showed a 20–30% mixing energy reduction with high carbon black content (>30 phr), which confers to powdered SBR good prospects for internal mixing. Carbon black and the rubber matrix formed a macroscopic homogenization in P(SBR/HAF), and the incorporation step is not obvious in the internal mixing processing results in these special mixing behaviors of P(SBR/HAF). A novel mixing model of carbon black–filled powdered rubber, during the mixing process in an internal mixer, was proposed based on the special mixing behaviors. P(SBR/HAF) vulcanizate showed better mechanical properties than those of SBR/HAF, dependent primarily on the absence of free carbon black and a fine dispersion of filler on the rubber matrix attributed to the proper preparation conditions of noncontact staining carbon black–filled powdered SBR. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 2494–2508, 2004     

A Study of FTIR,Thermal Properties and Natural Weathering Test on NBRVirgin/Recycled with SBR Blends

The effects of styrene butadiene rubber/virgin acrylonitrile butadiene rubber (SBR/NBRv) blends and styrene butadiene rubber/recycled acrylonitrile butadiene rubber (SBR/NBRr) blends on properties such Fourier transform infrared (FTIR), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) were carried out. Results indicated that, based on intensity of amine peak from FTIR at 85/15 blend ratio (R15) revealed optimum formation of crosslink between SBR and NBR either using virgin or NBRr. TG thermograms of SBR/NBRv blends of all ratios showed better onset thermal stability than SBR/NBRr blends. The change in the horizontal baseline from high to low energy level occurred in virgin NBR blends because the amount of reactive sites available in virgin NBR is higher compared to NBRr. Meanwhile NBRr blends showed T_c because the amount of crosslink occurred in these blends were slightly lower than NBRv blends. Up to 25 phr of NBRr, the tensile strength and elongation at break (E_b) retention of SBR/NBRv blends was better than SBR/NBRr blends after 6 months' weathering test except for M100. The scanning electron microscopy on the surface of both blends after 6 months exposure indicated that the severity of the crack was minimal for SBR/NBRr blends compared to SBR/NBRv particularly at 50/50 blend ratio designated the SBR/NBRr blends that contained more NBRr particles could reduce the degradation towards natural weathering.     

纳米碳酸钙对溶聚丁苯橡胶胶料的补强作用

探讨了纳米碳酸钙中白燕华ＣＣ对溶聚丁苯橡胶（ＳＳＢＲ）胶料的补强作用。结果表明,白燕华ＣＣ与ＳＳＢＲ的混炼加工工艺完全可行;单用白燕华ＣＣ作补强填料时,随着其用量的增大,ＳＳＢＲ胶料的硫化速度加快,强力性能显著提高,硬度变化不大;白燕华ＣＣ与ＨＡＦ并用具有协同作用,可使ＳＳＢＲ胶料的物理性能满足实际使用要求;白燕华ＣＣ／ＨＡＦ并用的ＳＳＢＲ／ＮＲ和ＳＳＢＲ／ＢＲ并用胶硫化速度较快,加工性能和物理性能较好     

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。     

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