改性氧化石墨烯硅橡胶的制备及其热性能研究

Preparation and Thermal Properties of Modified Graphene Oxide Silicone Rubbe

通过离子液体对氧化石墨烯进行改性,并进一步研究了改性氧化石墨烯作为硅橡胶填料的增强效果。结果表明,改性氧化石墨烯的加入明显改善了硅橡胶的硫化特性,特别是焦化时间;改性氧化石墨烯填充硅橡胶纳米复合材料的热稳定性较原始硅橡胶有所提高;纳米填料的加入显著提高了复合材料的力学性能,当改性氧化石墨烯的质量分数为2.0%时,复合材料的拉伸应力和弹性模量分别提高了67%和93%。因此,改性氧化石墨烯作为增强填料用于制备具有较高热性能和力学性能的聚合物具有很大的潜力。

GO was modified by ionic liquid,and the enhancement effect of modified GO as silicone rubber filler was further investigated.The results showed that the addition of modified GO significantly improved the vulcanization characteristics of silicone rubber,especially the coking time.The thermal stability of the modified GO filled silicone rubber nanocomposites is better than that of the original silicone rubber.The addition of nano-filler significantly improved the mechanical properties of the composites.When the mass fraction of the modified GO was 2.0%,the tensile stress and Young's modulus of the composites increased by 67%and 93%,respectively.Therefore,the modified GO has great potential to be used as reinforcement filler to prepare polymers with high thermal and mechanical properties.