Two advanced styrene‐butadiene/polybutadiene rubber blends filled with a silanized silica nanofiller for potential use in passenger car tire tread compound
Two advanced styrene‐butadiene/polybutadiene rubber blends filled with a silanized silica nanofiller for potential use in passenger car tire tread compound
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DOI：
10.1002/app.34221
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发表时间：
2012-02
影响因子：
3
通讯作者：
F. Saeed;A. Ansarifar;R. Ellis;Y. Haile-Meskel;M. Irfan
中科院分区：
文献类型：
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作者：
F. Saeed;A. Ansarifar;R. Ellis;Y. Haile-Meskel;M. Irfan
将苯乙烯-丁二烯橡胶 (SBR) 和聚丁二烯橡胶 (BR) 混合在一起（质量比 75:25），生产两种 SBR/BR 共混物。该共混物用沉淀无定形白色二氧化硅纳米填料增强，其表面用双(3-三乙氧基甲硅烷基丙基)-四硫化物(TESPT)预处理。 TESPT 是一种含硫双官能有机硅烷，可将二氧化硅与橡胶化学键合。橡胶主要通过在 TESPT 中使用硫进行硫化，并通过添加非硫供体和硫供体促进剂以及氧化锌来优化硫化。测量了固化共混物的硬度、杨氏模量、不同应变幅度下的模量、拉伸强度、断裂伸长率、断裂储存能量密度、撕裂强度、循环疲劳寿命、生热性、耐磨性、玻璃化转变温度、结合橡胶和tanδ。用无硫供体促进剂和氧化锌固化的共混物具有优异的拉伸强度、断裂伸长率、断裂储能密度和不同应变幅值下的模量。它还具有较低的生热性、较高的耐磨性和较高的低温 tanδ，以获得高防滑性以及冰和湿抓地力。优化橡胶和填料之间的化学粘合，使乘用车轮胎胎面的化学固化剂用量减少了约 58%（按重量计）。这有助于改善工作中的健康和安全，并减少对环境的破坏。 © 2011 Wiley periodicals, Inc. J Appl Polym Sci，2012
Styrene-butadiene rubber (SBR) and polybutadiene rubber (BR) were mixed together (75:25 by mass) to produce two SBR/BR blends. The blends were reinforced with a precipitated amorphous white silica nanofiller the surfaces of which were pretreated with bis(3-triethoxysilylpropyl)-tetrasulfide (TESPT). TESPT is a sulfur-bearing bifunctional organosilane that chemically bonds silica to rubber. The rubbers were primarily cured by using sulfur in TESPT and the cure was optimized by adding non-sulfur donor and sulfur donor accelerators and zinc oxide. The hardness, Young's modulus, modulus at different strain amplitudes, tensile strength, elongation at break, stored energy density at break, tear strength, cyclic fatigue life, heat build-up, abrasion resistance, glass transition temperature, bound rubber and tan δ of the cured blends were measured. The blend which was cured with the non-sulfur donor accelerator and zinc oxide had superior tensile strength, elongation at break, stored energy density at break and modulus at different strain amplitudes. It also possessed a lower heat build-up, a higher abrasion resistance and a higher tan δ at low temperatures to obtain high-skid resistance and ice and wet-grip. Optimizing the chemical bonding between the rubber and filler reduced the amount of the chemical curatives by approximately 58% by weight for passenger car tire tread. This helped to improve health and safety at work and reduce damage to the environment. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012