The Experts below are selected from a list of 32343 Experts worldwide ranked by ideXlab platform
Guogang Wang - One of the best experts on this subject based on the ideXlab platform.
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Surface Wettability of the Contaminative Silicone Rubber
Applied Mechanics and Materials, 2014Co-Authors: Guogang WangAbstract:The unique surface wettability of the Silicone Rubber can reduce substantially the flashover accidents caused by the dust pollution on the insulator. This paper describes the effects of non-soluble dust, salts component, and natural environment on the surface wettability of the Silicone Rubber. The structure and composition of the contamination on the Silicone Rubber surfaces were analyzed. The results indicate that the greater amount of non-soluble dust and salt-like component, the more difficult to restore the hydrophobic property of the sample surface, and even lost hydrophobicity; the natural environment had a more complex influence on Silicone hydrophobic property. In short, the property of hydrophobicity and the migration of hydrophobicity of Silicone Rubber, especially the latter, are important reasons for inhibition of flashover on polluted insulator. However, this special behavior of surface wettability of Silicone Rubber is affected by many environmental factors.
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flame retardant room temperature vulcanized Silicone Rubber composition
2010Co-Authors: Linyu Chai, Jiangchao Chen, Yinglei Yue, Wenhua Miao, Guogang Wang, Donghai Zhang, Xiangyang Li, Yunfa Chen, Chong Zhang, Hui ZhangAbstract:The invention relates to a flame-retardant room temperature vulcanized Silicone Rubber composition. The formula of the flame-retardant room temperature vulcanized Silicone Rubber composition comprises the following components in portion by weight: 30 to 70 portions of polysiloxane; 5 to 20 portions of reinforcing filler; 10 to 60 portions of flame-retardant filler; 3 to 15 portions of auxiliary agent; and 10 to 50 portions of diluent. The high-efficient flame-retardant room temperature vulcanized Silicone Rubber composition of the invention has higher tensile strength, elongation at break and tearing strength and excellent substrate adhesion. The vertical combustion test shows that the flame retardant property of the flame-retardant room temperature vulcanized Silicone Rubber composition can reach above FV1 level. And the flame-retardant room temperature vulcanized Silicone Rubber composition also has excellent smoke inhibition performance.
Wei Gang - One of the best experts on this subject based on the ideXlab platform.
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Study on Mechanical Property of Silicone Rubber Sponge by Extruding
2010Co-Authors: Wei GangAbstract:The experiments on Silicone Rubber sponge made by extruding and chemical blowing were performed in order to improve the efficiency of Silicone Rubber sponge.The cell size and mechanical properties of the different parts of Silicone Rubber sponges were compared.The result showed that the Silicone Rubber sponge pieces showed good consistency in density,hardness,tensile strength,elongation at break,compress relaxation and the stress-strain curve.The Silicone Rubber sponge with higher carbon black and foaming agent,and lower curing agent,had higher hardness,tensile strength and compression stress relaxation,but lower elongation at break lower.Both had excellent compression set properties,and showed good consistency.
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Domestic research progress in Silicone Rubber foam
China Elastomerics, 2009Co-Authors: Wei GangAbstract:The progress in recent years of research in Silicone Rubber foam material was reviewed in this paper.It introduced the specificity of the Silicone Rubber foam material from the two areas of the reinforcing filler system of the Silicone Rubber and the vulcanization and the foam system of the Silicone Rubber foam material.And it pointed out that high-temperature vulcanized Silicone Rubber foam of the study will become one of the direction of development of Silicone Rubber foam material in the future.
Hui Zhang - One of the best experts on this subject based on the ideXlab platform.
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flame retardant room temperature vulcanized Silicone Rubber composition
2010Co-Authors: Linyu Chai, Jiangchao Chen, Yinglei Yue, Wenhua Miao, Guogang Wang, Donghai Zhang, Xiangyang Li, Yunfa Chen, Chong Zhang, Hui ZhangAbstract:The invention relates to a flame-retardant room temperature vulcanized Silicone Rubber composition. The formula of the flame-retardant room temperature vulcanized Silicone Rubber composition comprises the following components in portion by weight: 30 to 70 portions of polysiloxane; 5 to 20 portions of reinforcing filler; 10 to 60 portions of flame-retardant filler; 3 to 15 portions of auxiliary agent; and 10 to 50 portions of diluent. The high-efficient flame-retardant room temperature vulcanized Silicone Rubber composition of the invention has higher tensile strength, elongation at break and tearing strength and excellent substrate adhesion. The vertical combustion test shows that the flame retardant property of the flame-retardant room temperature vulcanized Silicone Rubber composition can reach above FV1 level. And the flame-retardant room temperature vulcanized Silicone Rubber composition also has excellent smoke inhibition performance.
Wang Jing-he - One of the best experts on this subject based on the ideXlab platform.
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Application of TMPTMA in Silicone Rubber
2011Co-Authors: Wang Jing-heAbstract:The assistant crosslinking additive TMPTMA on the performance,mechanical properties,low temperature performance and adhesive properties of Silicone Rubber were studied.Results showed that a small amount of TMPTMA could improve the vulcanization characteristics and processing properties of the Silicone Rubber,enhance the hardness of the vulcanized Rubber,reduce the crystallization temperature of the Silicone Rubber,and effectively improve the bonding strength of the Silicone Rubber with metal.When TMPTMA exceeded a certain content,partially polymerization happened between active groups,which formed network structure in Silicone Rubber,resulting in weak bonding between two phase interface therefore impaired Rubber intensity.When the content of TMPTMA was 1 phr,the Silicone Rubber exhibited the best comprehensive performance.
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Effect of Phenyl on Combustion Behavior of Silicone Rubber
2011Co-Authors: Wang Jing-heAbstract:The effects of phenyl on combustion behavior of Silicone Rubber were investigated by analysis of oxygen index,DSC-TGA and EDS.It was found that with increasing content of phenyl,the oxygen index(OI) and decomposition temperature of Silicone Rubber were improved.The OI of 110-2VT was 23.9%,and the OI of 120-2 was 27.9%.The initial decomposition temperature T0.05 and the maximum decomposition temperature Tmax of 120-2 was about 30 ℃ and 40 ℃ higher than 110-2VT.The existence of phenyl in Silicone Rubber was in favor of forming char in combustion,which would improve the flame-resistance of Silicone Rubber.
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Effect of Aluminosilicate Fibre on Fire-resistance of Silicone Rubber
2009Co-Authors: Wang Jing-heAbstract:In order to improve the fire resistance of Silicone Rubber,aluminosilicate fibre(AF) was added.The effects of AF on mechanical properties and fire resistance of Silicone Rubber were investigated.It was found that with increasing content of AF,the mechanical properties of Silicone Rubber were decreased while flame retardant property improved.The tensile strength,elongation at break,oxygen index of Silicone Rubber with 40 parts by weight AF were 6.4 MPa,220%,33.1%,respectively.At the same time,the fire resistant performance of Silicone was enhanced evidently.A 6 mm thick sheet sample could block 1100 ℃ fire flame for 15 min without burn through.The evenly distributed AF could hold the burning char of Silicone Rubber together to form a tough char layer,which worked as a fire resistant shield for the underlying Silicone Rubber.
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Advances in Thermallly Conductive Silicone Rubber
2008Co-Authors: Wang Jing-heAbstract:The thermal conductivity mechanism and theoretical models of thermally conductive Silicone Rubber were introduced.The research and exploitation of thermally conductive Silicone Rubber were also summarized.Three approaches on improving thermal-conductivity of Silicone Rubber were discussed.The future development and application of thermally conductive Silicone Rubber were discussed at the end of paper。
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Properties of Silicone Rubber at High or Low Temperature
Journal of Aeronautical Materials, 2006Co-Authors: Wang Jing-heAbstract:The article mainly shows the properties of Silicone Rubber at high or low temperature.The effects of metal oxides Fe_2O_3,Fe_2O_3/SnO_2,SnO_2,CeO_2 on the thermal stability of methyl-vinyl Silicone Rubber(VMQ),methyl-phenyl-vinyl Silicone Rubber(PVMQ),and trifluoropropyl contained Silicone Rubber(FVMQ) were studied by heat aging test.Through coefficient of cold-resistance under compression and DMTA,the characters in low temperature of VMQ,PVMQ and FVMQ were also studied.Result shows that metal oxides such as Fe_2O_3,Fe_2O_3/SnO_2,SnO_2 and CeO_2 can greatly improve the thermal stability of silicon Rubber.The analysis of x-ray photoelectron spectroscopy(XPS) showed that Sn+4 were reduced to Sn0 in Silicone Rubber during thermal air aging.The thermal stability of Silicone Rubber could be improved by some metal oxide.The results of DMTA showed that the Rubber based on PVMQ,SKTFT-50,SKTFT-25 and the copolymer have excellent cold resistance.
Fu Guo - One of the best experts on this subject based on the ideXlab platform.
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Study on reliability of room temperature vulcanization Silicone Rubber and conductive composite Silicone Rubber reinforced by silica
2011 International Symposium on Advanced Packaging Materials (APM), 2011Co-Authors: Mengke Zhao, Zhidong Xia, Yongxin Zhu, Xiaohei Liu, Fu GuoAbstract:Electromagnetic interference (EMI) is considered as a crucial environmental and reliability issue in electronic information industries, especially with the rapid development of information technology. Since electromagnetic signals are prone to be interfered by external electromagnetic radiation, it is urgent to take effective measures to reduce, or ultimately eliminate the electromagnetic interference. Electromagnetic shielding conductive Silicone Rubber hence attracts great attention based on such demands. In this paper, we report our fundamental studies on conductive polymer composite materials, i.e., adding different conductive filler into polymer to achieve required conductivity. Conductive polymer composite materials have been widely used in many different areas owing to its low cost and uncomplicated processing techniques. In order to achieve better performance, the two main components, Silicone Rubber and conductive filler, should both exhibit good performance and compatibility. This paper is focused on the room temperature vulcanized (RTV) Silicone Rubber. The attempt to improve the performance of Silicone Rubber was based on the experimental efforts on formula design as well as processing improvement. The formula and processing of RTV Silicone Rubber with required performances was investigated from a series of comparative experiments. 85°C-85% RH aging, 100°C aging, and salt spray testing (SST) were different ways we employed to investigate the reliability of RTV Silicone Rubber and conductive Silicone Rubber. Several aspects of service performance were tested and characterized.