Rubbers reinforced with silica filler are used in many applications. This study explores the effect of carbohydrate/protein (CP) mixture on the silica-reinforced natural rubber. Silica partially replaced with CP filler increases the curing rate and crosslink density, but also increases the extent of reversion after 100% cure. Compared to the rubber reinforced with silica filler, the rubber with 30% CP and 70% silica has comparable tensile properties. The comparison of storage moduli in the glassy region indicates silica has a greater interaction with rubber than CP particles. In the rubbery region, the CP composites have a greater thermal stability over a wide temperature range than the silica-reinforced rubber. The reinforcement factor indicates that the reinforcement mechanism is different with the inclusion of CP particles in the rubber. The loss tangent measurements indicate the addition of CP particles to silica-reinforced rubber reduces rolling resistance of tires. Stress softening effect shows that the inclusion of CP particles increases storage modulus stability against cyclic dynamic strain when compared to silica-reinforced rubber.

用二氧化硅填料增强的橡胶用于许多应用。本研究探讨了碳水化合物/蛋白质 (CP) 混合物对二氧化硅增强天然橡胶的影响。用 CP 填料部分替代二氧化硅可提高固化速率和交联密度，但也会提高 100% 固化后的返原程度。与用二氧化硅填料增强的橡胶相比，具有 30% CP 和 70% 二氧化硅的橡胶具有相当的拉伸性能。玻璃态区域储能模量的比较表明，与 CP 颗粒相比，二氧化硅与橡胶的相互作用更大。在橡胶区，CP 复合材料在较宽的温度范围内比二氧化硅增强橡胶具有更高的热稳定性。补强系数表明，随着橡胶中CP颗粒的加入，补强机制有所不同。损耗角正切测量表明向二氧化硅增强橡胶中添加 CP 颗粒会降低轮胎的滚动阻力。应力软化效应表明，与二氧化硅增强橡胶相比，包含 CP 颗粒可提高储能模量对循环动态应变的稳定性。