Influence of inorganic flame retardants on properties of monocomponent RTV silicone rubber |
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DOI: |
Key Words: inorganic flame retardant;monocomponent RTV silicone rubber;oxygen index |
Author Name | Affiliation | AI Guo-jin | South China University of Technology | MA Wen-shi | South China University of Technology | WANG Hui-zu | Shunde Giraffe Fine Chemical Co.,Ltd |
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Abstract: |
The influence of magnesium hydroxide[Mg(OH)2],aluminium hydroxide[Al(OH)3] and their blend on physical properties and flame retardance of monocomponent RTV silicone rubber(RTV-1) was experimentally investigated.The results showed that the hardness,tensile strength and oxygen index(OI) of RTV-1 increased as the addition level of Mg(OH)2 increased,but the elongation at break decreased,and RTV-1 became flame-retarded when 50 phr Mg(OH)2 was used;the hardness,tensile strength and OI of RTV-1 filled by Al(OH)3 were higher than those filled by Mg(OH)2 in the same content,respectively,and RTV-1 was flame-retarded when 40 phr Al(OH)3 was added;when the addition level of Mg(OH)2/Al(OH)3 was 30 phr,RTV-1 became flame-retarded,and the optimum mass ratio of Mg(OH)2/Al(OH)3 was 1∶4. |
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