Incorporating silicate-based inorganic lightweight fillers into the rubber sole formulation design,we examined their effectiveness in achieving lightweight soles.Simultaneously,we conducted a systematic investigation of the key factors influencing the preparation of lightweight soles,specifically vulcanization temperature and time.The results revealed that,within the lightweight sole preparation process,a vulcanization temperature of 165℃and a vulcanization time of 225 to 240 seconds yielded well-formed and dimensionally stable lightweight rubber soles.The inclusion of silicate-based inorganic lightweight fillers effectively reduced sole density,enabling the production of lightweight soles with densities ranging from 0.94 to 1.16 g/cm3.Furthermore,the introduction of reinforcing agents facilitated a balance between density reduction and the maintenance of physical performance.
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