含改性水滑石的硅橡胶泡沫的阻燃性,Journal of Applied Polymer Science

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含改性水滑石的硅橡胶泡沫的阻燃性
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-02-18 , DOI: 10.1002/app.52255
Li Ma ₁ , Xixi Liu ₁ , Youjie Sheng ₁ , Ying Guo _{2,

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Affiliation

硅橡胶材料（硅橡胶泡沫[SRF]）复合材料是一种新型的高分子泡沫材料，具有高弹性和耐高温的特点，但这种材料易燃。为了提高SRF复合材料的阻燃性能。共沉淀法用于制备具有不同 Ce/Al 摩尔比的改性水滑石 (LDHs)，用于 SRF 复合材料。X 射线衍射、扫描电子显微镜 (SEM) 和 FT-IR 用于表征具有不同 Ce/Al 摩尔比的改性 LDH。通过极限氧指数（LOI）、垂直燃烧试验、热重分析、锥形量热仪试验、扫描电镜等研究了复合材料的燃烧性能、热分解和力学性能。结果表明，添加3%LDHs、Ce/Al摩尔比为0.3:0.7的SRF复合材料的LOI值为31.2%，SRF复合材料的放热率、发烟率和总发烟量分别为分别减少了 53.64%、34.92% 和 66.19%。此外，改性LDHs的加入提高了SRF复合材料的热稳定性。本研究结果可为环保型SRF的开发提供指导。

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Flame retardancy of silicone rubber foam containing modified hydrotalcite

Silicone rubber material (silicone rubber foam [SRF]) composites is a new type of polymer foam material, which has the characteristics of high elasticity and high-temperature resistance, but this material is flammable. In order to improve the flame retardant properties of SRF composites. The co-precipitation method is used to prepare modified hydrotalcites (LDHs) with different Ce/Al molar ratios for application to SRF composites. X-ray diffraction, scanning electron microscopy (SEM), and FT-IR are used to characterize modified LDHs with different Ce/Al molar ratios. The combustion performance, thermal decomposition, and mechanical properties of composite materials are studied through the limiting oxygen index (LOI), vertical combustion test, thermal gravimetric analysis, cone calorimeter test, and SEM. Results show that the LOI value of SRF composite with addition of 3% LDHs at a Ce/Al molar ratio of 0.3:0.7 is 31.2%, and the heat release rate, the smoke production rate, and total smoke production of the SRF composite are reduced by 53.64%, 34.92%, and 66.19%, respectively. Besides, the addition of modified LDHs leads to increase in the thermal stability of the SRF composite. The results obtained from this study can provide guidance for the development of environmentally friendly SRF.

更新日期：2022-02-18

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