Preparation and properties of ceramizable fireproof silicon rubber composites based on boron-modified MQ silicone resin

IF 1.4 4区化学 Q4 POLYMER SCIENCE

Journal of Rubber Research Pub Date : 2026-04-27 DOI:10.1007/s42464-026-00362-5

Xiao Lu, Yongqing Zhao, Wenjie Ye, Mengyang Sun, Ruiqi Sha, Yaoxin Shao, Wenge Zheng, Linqiong Xu

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引用次数: 0

Abstract

Boron-modified MQ silicone resin (B-MQ) was successfully prepared as a new flux using boric acid (BA) modified vinyl MQ silicone resin. The B-MQ was mixed with silicone rubber (VMQ, vinyl methyl silicone rubber) and other fillers to prepare ceramicised silicone rubber composites with different ratios of B-MQ and VMQ. The experimental results show that the initial decomposition temperature of MQ silicone resin is 203 ℃, and the decomposition temperature of modified B-MQ silicone resin is increased to 255 ℃. The addition of B-MQ can effectively improve the thermal stability, tensile strength, hardness, the flame-retardant level (e.g., composites with 6 and 9 phr B-MQ: V-0) and the LOI of the composites. After calcination, the ceramic residue with 6 phr B-MQ displays a dense structure and high ceramic strength (e.g., calcinated at 1000 °C: 21.5 MPa). The caramelisation mechanism for fire-resistant silicone rubber was revealed. The SiO₂ generated by the decomposition of silicone rubber undergoes complex eutectic reactions through the liquid phase formed by B-MQ melting and the porcelain filler, leading to a greater degree of improvement in the mechanical strength of the ceramic residue. This work provides a new idea for preparing silicone composites with high fire resistance and ceramic strength.

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硼改性MQ硅树脂陶瓷防火硅橡胶复合材料的制备及性能研究

以硼酸（BA）改性乙烯基MQ有机硅树脂为熔剂，成功制备了硼改性MQ有机硅树脂（B-MQ）。将B-MQ与硅橡胶（VMQ，乙烯基甲基硅橡胶）和其他填料混合，制备出不同比例的B-MQ和VMQ的陶化硅橡胶复合材料。实验结果表明，MQ有机硅树脂的初始分解温度为203℃，改性后的B-MQ有机硅树脂的分解温度提高到255℃。B-MQ的加入能有效提高复合材料的热稳定性、抗拉强度、硬度、阻燃等级（如6和9 phr B-MQ: V-0的复合材料）和LOI。焙烧后，含有6 phr B-MQ的陶瓷渣具有致密的结构和较高的陶瓷强度（如在1000℃：21.5 MPa下煅烧）。揭示了耐火硅橡胶的焦糖化机理。硅橡胶分解生成的SiO2通过B-MQ熔融形成的液相与瓷填料发生复杂的共晶反应，使得陶瓷渣的机械强度有较大程度的提高。本研究为制备高耐火、高陶瓷强度的有机硅复合材料提供了新的思路。

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来源期刊

Journal of Rubber Research 化学-高分子科学

自引率

15.40%

发文量

审稿时长

3 months

期刊介绍： The Journal of Rubber Research is devoted to both natural and synthetic rubbers, as well as to related disciplines. The scope of the journal encompasses all aspects of rubber from the core disciplines of biology, physics and chemistry, as well as economics. As a specialised field, rubber science includes within its niche a vast potential of innovative and value-added research areas yet to be explored. This peer reviewed publication focuses on the results of active experimental research and authoritative reviews on all aspects of rubber science. The Journal of Rubber Research welcomes research on: the upstream, including crop management, crop improvement and protection, and biotechnology; the midstream, including processing and effluent management; the downstream, including rubber engineering and product design, advanced rubber technology, latex science and technology, and chemistry and materials exploratory; economics, including the economics of rubber production, consumption, and market analysis. The Journal of Rubber Research serves to build a collective knowledge base while communicating information and validating the quality of research within the discipline, and bringing together work from experts in rubber science and related disciplines. Scientists in both academia and industry involved in researching and working with all aspects of rubber will find this journal to be both source of information and a gateway for their own publications.