文章摘要
Effect of Metal Hydroxides on Ceramic Properties of RTV Silicone Rubber
Received:July 07, 2020  Revised:July 07, 2020
DOI：10.12136/j.issn.1000-890X.2021.02.0098
Key Words: silicone rubber；room temperature vulcanization；metal hydroxide；aluminum hydroxide；magnesium hydroxide；ceramization；three-point flexural strength
Author NameAffiliationE-mail
GOU Zhi* South China University of Technology MRGZHI@qq.com 
GUO Jianhua South China University of Technology  
HU Xinsong Guangzhou Glorystar Chemicals Co. ，Ltd  
DENG Lihua Guangzhou Glorystar Chemicals Co.，Ltd  
CHENG Xiaolian Guangzhou Glorystar Chemicals Co.，Ltd  
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Abstract:
      Ceramizable room-temperature-vulcanized（RTV） silicone rubber were prepared with α，ω-dihydroxyl polydimethylsiloxane（107 silicone rubber） as the matrix and metal hydroxides（aluminum hydroxide and magnesium hydroxide） as the ceramic additives.The effects of metal hydroxides on the properties of the silicone rubber were investigated.The results showed that the mechanical properties of the silicone rubber with magnesium hydroxide decreased significantly，while the mechanical properties of the silicone rubber with aluminum hydroxide did not change significantly.The ceramic residue derived from the silicone rubber with aluminum hydroxide sintered at 1 000 ℃ showed more stable appearance and size，better shape retention and more compact ceramic residue section than those with magnesium hydroxide.The increment of the three-point flexural strength of the ceramic residue derived from the silicone rubber with aluminum hydroxide increased significantly compared with silicone rubber without metal hydroxide.
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