Halogen-free flame-retardant silicone rubber wire and cable material and preparation method thereof

A wire and cable and silicone rubber technology, which is applied in the field of halogen-free flame retardant silicone rubber wire and cable materials and its preparation, can solve the problem of poor compatibility between aluminum hydroxide and silicone rubber, unsatisfactory effect of silicone rubber wrapping, and flame retardant. Unsatisfactory effect and other problems, to achieve the effect of outstanding anti-aging performance, soft structure and low cost

Inactive Publication Date: 2014-03-26
东莞新东方科技有限公司
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Problems solved by technology

However, due to the poor compatibility between aluminum hydroxide and silicone rubber, the use of aluminum hydroxide to modify the flame retardancy of silicone rubber leads to its mechanical deterioration, and the roll wrapping effect of silicone rubber is not ideal, and the flame retardancy effect is not good; In addition, when only aluminum hydroxide is used as a single halogen-free flame retardant, the flame retardant effect will be unsatisfactory

Method used

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  • Halogen-free flame-retardant silicone rubber wire and cable material and preparation method thereof

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[0030] The preparation method of the halogen-free flame-retardant silicone rubber wire and cable material of the present invention comprises the following steps:

[0031] Step 1, providing 30-40 parts by weight of aluminum hydroxide and 5-8 parts by weight of aluminum hydroxide surface modifier;

[0032] Step 2, uniformly mixing the above-mentioned aluminum hydroxide surface modifier with aluminum hydroxide, and reacting at 120-150°C for 40-60 minutes to obtain surface-modified aluminum hydroxide;

[0033] The aluminum hydroxide surface modifying agent is hexamethyldisilazane, and the aluminum hydroxide is modified through the surface treatment of hexamethyldisilazane to reduce its surface energy, thereby reducing the polarity of aluminum hydroxide, making It has better compatibility with high temperature resistant silicone rubber compound;

[0034] Step 3, providing 90-120 parts by weight of high temperature resistant silicone rubber compound;

[0035] The high-temperature-...

Embodiment 1

[0043] Provide 35 parts by weight of aluminum hydroxide and 6 parts by weight of hexamethyldisilazane, mix them uniformly, and react at 120-150°C for 40-60 minutes to obtain surface-modified aluminum hydroxide; Put 100 parts by weight of high-temperature-resistant silicone rubber compound on the kneader and knead for a period of time, then add surface-modified aluminum hydroxide evenly and dispersedly, and knead for 0-60 minutes at 2-3 MPa; A variety of mixed halogen-free flame retardants in parts by weight are uniformly and dispersedly added to the high-temperature-resistant silicone rubber compound on the kneader, and kneaded for 40 to 60 minutes to obtain a halogen-free flame-retardant silicone rubber wire and cable material.

[0044] In summary, the halogen-free flame-retardant silicone rubber wire and cable material of the present invention can achieve excellent flame-retardant effect, and has excellent insulation, mechanical properties, aging resistance and environmental ...

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Abstract

The invention provides a halogen-free flame-retardant silicone rubber wire and cable material and a preparation method thereof. The halogen-free flame-retardant silicone rubber wire and cable material comprises the following components in parts by weight: 30-40 parts of aluminum hydroxide, 5-8 parts of aluminum hydroxide surface modifier, 4-6 parts of a mixture of multiple halogen-free flame retardants and 90-120 parts of high-temperature-resistant silicone rubber compound, wherein the mixture of multiple halogen-free flame retardants contains no aluminum hydroxide. The halogen-free flame-retardant silicone rubber wire and cable material has excellent flame retardance and excellent insulativity, mechanical property, aging resistance and environmental protection property; and the preparation method of the halogen-free flame-retardant silicone rubber wire and cable material is simple in process, easy to operate, high in production efficiency and low in cost.

Description

technical field [0001] The invention relates to the field of flame-retardant modification of silicone rubber, in particular to a halogen-free flame-retardant silicone rubber wire and cable material and a preparation method thereof. Background technique [0002] Silicone rubber has excellent comprehensive properties, such as good electrical insulation, oxygen resistance and aging resistance, light resistance and aging resistance, mildew resistance, chemical stability, etc. Wire and cable products made of silicone rubber have the characteristics of heat radiation resistance, cold resistance, acid and alkali resistance, corrosive gas, and waterproof. It has a long service life and is widely used in metallurgy, electric power, petrochemical, electronics, automobile manufacturing and other industries. However, with the rapid development of industrial production and the continuous improvement of the level of industrialization, people have higher and higher requirements for silicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K11/00C08K9/06C08K3/22H01B3/28
Inventor 田玉文范强
Owner 东莞新东方科技有限公司
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