文章信息/Info

Title:

Effect of Flame-Retardant Fillers on Properties of Ceramicized Refractory Silicone Rubber

文章編號:

1674-3962(2022)10-0864-05

作者:

普慶

（河南省產品質量監督檢驗院，河南 鄭州 450004）

Author(s):

Pu Qing

(Henan Institute of Product Quality Supervision and Inspection, Zhengzhou 450004, China)

關鍵詞:

陶瓷化; 硅橡膠; 阻燃填料; 機械性能; 耐火性能; 電氣絕緣性能

Keywords:

ceramic;  silicon rubber;  flame-retardant fillers;  mechanical properties;  fire resistantance;  electrical insulation performance

分類號:

TM215.1

DOI:

10.7502/j.issn.1674-3962.202101006

文獻標志碼:

A

摘要:

為探究阻燃填料對陶瓷化耐火硅橡膠性能的影響，以硅橡膠為基材，硼酸鋅和玻璃粉為成瓷填料，不同比例的氫氧化鋁和氫氧化鎂為阻燃填料，制備了陶瓷化耐火硅橡膠。并對陶瓷化硅橡膠的硬度、拉伸性能、撕破性能、電氣絕緣性能及耐火性能進行了測試分析，結果表明：相較于普通硅橡膠，陶瓷化硅橡膠的邵氏硬度提高了26.3%；拉伸性能有不同程度的降低，但仍可以滿足電線電纜產品標準中的拉伸性能要求；撕破性能最大增幅為74%；電氣絕緣性能有一定程度的降低；陶瓷化硅橡膠具有良好的耐火性能，且在阻燃填料相同質量份數下，氫氧化鎂比氫氧化鋁更有利于陶瓷化硅橡膠的阻燃性能的提高，其極限氧指數相較于普通硅橡膠提高了41.1%。

Abstract:

In order to investigate the effect of flame-retardant fillers on the properties of ceramicized refractory silicone rubber, ceramicized refractory silicone rubber was prepared with silicon rubber as the base material, zinc borate and glass powder as the ceramic filler, and different proportions of magnesium hydroxide and aluminum hydroxide as the flame retardant fillers. The hardness, tensile property, tear property, electrical insulation property and fire resistance of ceramicized silicone rubber were tested and analyzed. The results showed that the Shore hardness of ceramicized silicone rubber was increased by 26.3% compared with that of conventional silicone rubber. The tensile properties reduced by different degrees, but the tensile properties could still meet the requirements of wire and cable product standards. The maximum increase of tearing property was 74%. Electrical insulation performance had a certain degree decrease. Ceramic silicone rubber had good fire resistance, with the same mass fraction of flame retardant, magnesium hydroxide was more beneficial to the improvement of flame retardant resistance for ceramic silicone rubber than aluminum hydroxide, its limiting oxygen index was 41.1% higher than that of conventional silicone rubber.