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Reinforcing filler capable of improving mechanical properties of silicon rubber

A technology of reinforcing filler and silicone rubber, which is applied in the field of new functional materials, can solve problems such as incompetence and shortage of mechanical properties, and achieve the effects of reducing usage, improving physical and mechanical properties, and improving mechanical strength

Inactive Publication Date: 2018-12-11
合肥卓汇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the development of social economy, higher requirements are put forward for the performance of silicone rubber. In many occasions, the existing silicone rubber is incompetent due to the shortage of mechanical properties.

Method used

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  • Reinforcing filler capable of improving mechanical properties of silicon rubber

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] A reinforcing filler for improving the mechanical properties of silicone rubber, made of the following components in parts by weight: 5.5 parts of white carbon black, 3.8 parts of ferrous chloride tetrahydrate, 1.5 parts of hexamethyldisilazane, dimethyl 1.0 parts of formamide, 2.0 parts of borax-sodium carbonate buffer solution, 16 parts of ethanol, 2.4 parts of oleic acid, 12 parts of sodium hydroxide solution, and its preparation method comprises the following steps:

[0019] (1) Add white carbon black to a four-necked flask, add ethanol solvent, stir and mix evenly, heat up to 45°C, drop oleic acid at a rate of 35 drops / min, continue heating to 75°C after the dropwise addition, and reflux React for 2.0 hours. After the reaction is over, filter the obtained reactant with suction, and then place the product in an oven at 80°C to dry for 5 hours. The dry powder obtained is added to a porcelain boat, placed in a tube furnace, and nitrogen gas is introduced to the The ni...

Embodiment 2

[0028] A reinforcing filler for improving the mechanical properties of silicone rubber, made of the following components in parts by weight: 5.8 parts of white carbon black, 3.9 parts of ferrous chloride tetrahydrate, 1.6 parts of hexamethyldisilazane, dimethyl 1.1 parts of formamide, 2.2 parts of borax-sodium carbonate buffer solution, 17 parts of ethanol, 2.45 parts of oleic acid, 13 parts of sodium hydroxide solution, and its preparation method comprises the following steps:

[0029] (1) Add white carbon black to a four-necked flask, add ethanol solvent, stir and mix evenly, heat up to 48°C, drop oleic acid at a rate of 38 drops / min, continue heating to 76°C after dropping, and reflux Reacted for 2.2 hours. After the reaction was completed, the obtained reactant was suction filtered, and then the product was dried in an oven at 85°C for 5.5 hours to obtain a dry powder that was added to a porcelain boat, placed in a tube furnace, and nitrogen gas was introduced to the The n...

Embodiment 3

[0038] A reinforcing filler for improving the mechanical properties of silicone rubber, made of the following components in parts by weight: 6.0 parts of white carbon black, 4.0 parts of ferrous chloride tetrahydrate, 1.7 parts of hexamethyldisilazane, dimethyl 1.2 parts of formamide, 2.5 parts of borax-sodium carbonate buffer solution, 18 parts of ethanol, 2.5 parts of oleic acid, 14 parts of sodium hydroxide solution, and its preparation method comprises the following steps:

[0039] (1) Add white carbon black to a four-necked flask, add ethanol solvent, stir and mix evenly, heat up to 50°C, drop oleic acid at a rate of 40 drops / min, continue heating to 78°C after dropping, and reflux React for 2.5 hours. After the reaction is over, filter the obtained reactant with suction, then place the product in a 90°C oven and dry it for 6 hours to obtain a dry powder that is added to a porcelain boat, placed in a tube furnace, and nitrogen gas is introduced to the The nitrogen gas int...

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Abstract

The invention relates to the technical field of novel functional materials and discloses reinforcing filler capable of improving mechanical properties of silicon rubber. White carbon black is subjected to structure improvement, and nano silicon dioxide cladded magnetic material is further prepared through a hydration reaction method and is used as the reinforcing filler; the reinforcing filler hasan extremely strong magnetic adsorption effect and participates in free radical polymerization reaction of base rubber in a synthesis process of the silicon rubber; the dosage of a crosslinking agentis reduced and a supporting framework of organic silica gel is formed, so that the mechanical strength is greatly improved and complementation and optimization of performance of organic-inorganic materials are realized and furthermore, an organic high polymer and an inorganic material are perfectly compounded. By adopting the reinforcing filler prepared by the invention, the problem of shortage of the mechanical properties of existing silicon rubber is solved; the mechanical properties and anti-ageing performance are considered and the development and utilization of the silicon rubber are improved; the reinforcing filler can realize practical significance of improving the physical mechanical properties of the silicon rubber and expanding an applicable field of the silicon rubber, and is atechnical scheme which is extremely worthy of being popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to a reinforcing filler for improving the mechanical properties of silicone rubber. Background technique [0002] Silicone rubber refers to the rubber whose main chain is composed of silicon and oxygen atoms alternately, and there are usually two organic groups attached to the silicon atoms. Ordinary silicone rubber is mainly composed of silicone chains containing methyl groups and a small amount of vinyl groups. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the temperature and oil resistance of silicone rubber. Silicone rubber has good low temperature resistance, and generally can still work at -55°C. After introducing phenyl, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K9/00C08K9/02C08K3/36C08K3/013
CPCC08K3/36C08K9/00C08K9/02C08K2201/01C08K2201/011C08K3/013C08L83/04
Inventor 郭平
Owner 合肥卓汇新材料科技有限公司
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