Study on the Flame Retardancy and Thermal Decomposition Properties of RTV-2 Silicone Rubber Foam Containing Inorganic Flame Retardant

被引：0

作者：

Ma L. ^{[1
,2
]}

Liu Z. ^{[1
,2
]}

Xiao Y. ^{[1
,2
]}

Kang F. ^{[1
,2
]}

Yang K. ^{[1
,2
]}

Deng J. ^{[1
,2
]}

机构：

[1] College of Safety and Engineer, Xi'an University of Science and Technology, Xi'an

[2] Key Lab of Coal Fire Disaster Prevention in Shanxi Province, Xi'an

来源：

Cailiao Daobao/Materials Reports | 2019年 / 33卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Flame retardancy; Inorganic flame retardants; Silicone rubber foam; Thermal decomposition performance;

D O I：

10.11896/cldb.18060017

中图分类号：

学科分类号：

摘要：

For the sake of preparing room temperature vulcanized silicone foam (SRF) with excellent flame retardancy, the flame retardant effects of inorganic flame retardants on SRF was studied. First, the SRF with maximum limit oxygen index(LOI) was selected by orthogonal experiment L9(34), and then the SRF composites were prepared by adding magnesium hydroxide (MH), calcium carbonate (CC), and aluminum hydroxide (ATH), respectively. Then, the limit oxygen index instrument, smoke density tester and synchronous thermal analyzer were employed to test and analyze, and the apparent activation energy was calculated by the Coats-Redfern and Achar methods. The results revealed that the LOI of the SRF was 29.5%, the oxygen index increased after adding the inorganic flame retardant. Among them, the SRF composites with 30wt% ATH showed highest LOI of 34.9%. The smoke density decreased after adding the inorganic flame retardants, the smoke density decreased, and ATH exhibited best smoke inhibition. Both MH and ATH could contributed to enhance the thermal stability of SRF. When the addition amount of MH and ATH addition were both 20wt%, the mass residual rate was increased by 16.5% and 15.2%, respectively. Whereas, after adding 30wt% CC, the mass residual rate decreased by 4.7%, accompanied by decrease of the thermal stability. The greater the activation energy brought bout stronger flame retardancy. MH and ATH presented obvious flame retardancy at both the low temperature stage and the high temperature stage, while CC worked more effectively at the high temperature stage. The results indicated that ATH was the best flame retardant for SRF. © 2019, Materials Review Magazine. All right reserved.

引用

页码：1836 / 1841

页数：5

共 14 条

[1]

Chen D.Z., Liu Y., Huang C., Polymer Degradation and Stability, 97, 3, (2012)

[2]

Labouriau A., Cox J.D., Schoonover J.R., Et al., Polymer Degradation & Stability, 92, 3, (2007)

[3]

Tan S., Research on preparrtion and properties of low density and flame retardant silicone rubber foam, (2011)

[4]

Huang S., Preparation of environment-friendly flame retardant silicone rubber sponge material, (2003)

[5]

Nicholson W.R., Rapson L.J., Shephard K.L., (2000)

[6]

Wu Y., Zhu Q., Wang X.H., Et al., Polymer Materials Science & Engineering, 32, 3, (2016)

[7]

Pan D.H., Liu M., Silicone Material, 32, 3, (2004)

[8]

Zhu C., Deng C., Cao J.Y., Et al., Polymer Degradation & Stability, 32, 121, (2015)

[9]

Wang G.C., Lu Z.Y., Hu X.P., Et al., Materials Review, 21, 2, (2007)

[10]

Chen X., Li M., Zhuo J., Et al., Journal of Thermal Analysis & Calorimetry, 123, 1, (2016)

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