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High temperature-resistant flame-retardant nano silicon rubber and preparation method thereof

A nano-silicone rubber and high-temperature-resistant technology, which is applied in the field of rubber materials, can solve the problems of low heat distortion temperature and low oxygen index, and achieve the effects of good oil resistance, low cost, excellent wear resistance and elasticity

Inactive Publication Date: 2016-11-16
苏州直角新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides a high temperature resistant flame retardant nano-silicone rubber with high heat distortion temperature, high tensile strength, high oxygen index and high elongation and its preparation method, which solves the problems of low heat distortion temperature and low oxygen index of existing rubber materials. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Weigh 100 parts of silicone rubber, 5 parts of nano-aluminum oxide, 0.4 part of methacrylic acid, 0.05 part of azobisisobutyronitrile, 0.2 part of stearic acid, and 0.2 part of stannous octoate according to the ratio of parts by mass. 1.2 parts, 5 parts of antimony trioxide, 10 parts of monofluorotrichloromethane, 0.5 parts of dicumyl peroxide, and 8 parts of triethyltetramine.

[0025] Step 2: Put the silicone rubber into a high-speed mixer, raise the temperature to 115°C, add the remaining raw materials, raise the temperature to 135°C, mix at a speed of 800r / min, and mix for 35min.

[0026] Step 3: Put the mixed raw materials into a twin-screw extruder for melting, plasticizing and granulating, the temperature is 200°C, 210°C, 220°C, 230°C, 220°C, 210°C, and the screw speed is 110r / min.

[0027] Good oil resistance, corrosion resistance, low cost, bending strength 80MPa, oxygen index 35%; tensile strength 120MPa, Vicat softening point 150℃, excellent wear resi...

Embodiment 2

[0029] Step 1: Weigh 100 parts of silicone rubber, 15 parts of nano-aluminum oxide, 0.8 part of methacrylic acid, 0.45 part of azobisisobutyronitrile, 0.6 part of stearic acid, and stannous octoate according to the ratio of parts by mass. 1.8 parts, 25 parts of antimony trioxide, 20 parts of chlorofluoromethane, 2.5 parts of dicumyl peroxide, and 12 parts of triethyltetramine.

[0030] Step 2: Put the silicone rubber into a high-speed mixer, raise the temperature to 125°C, add the remaining raw materials, raise the temperature to 145°C, mix at a speed of 1000r / min, and mix for 45min.

[0031] Step 3: Put the mixed raw materials into a twin-screw extruder for melting, plasticizing and granulating, the temperature is 200°C, 210°C, 220°C, 230°C, 220°C, 210°C, and the screw speed is 120r / min.

[0032] Good oil resistance, corrosion resistance, low cost, bending strength 90MPa, oxygen index 40%; tensile strength 140MPa, Vicat softening point 160℃, excellent wear resistance and elas...

Embodiment 3

[0034]The first step: weigh 100 parts of silicone rubber, 10 parts of nano aluminum oxide, 0.6 parts of methacrylic acid, 0.25 parts of azobisisobutyronitrile, 0.4 parts of stearic acid, and stannous octoate according to the proportion of parts by mass. 1.5 parts, 15 parts of antimony trioxide, 15 parts of monofluorotrichloromethane, 1.5 parts of dicumyl peroxide, and 10 parts of triethyltetramine.

[0035] The second step: put the silicone rubber into the high-speed mixer, heat up to 120 ° C, add the remaining raw materials, heat up to 140 ° C, mix at a speed of 900 r / min, and mix for 40 minutes.

[0036] The third step: the mixed raw materials are added to the twin-screw extruder for melting, plasticizing, and granulation.

[0037] Good oil resistance, corrosion resistance, low cost, bending strength 100MPa, oxygen index 45%; tensile strength 160MPa, Vicat softening point 170℃, excellent wear resistance and elasticity, elastic modulus 16MPa; Shore hardness 115, raw material ...

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Abstract

The invention discloses a high temperature-resistant flame-retardant nano silicon rubber and a preparation method thereof. The high temperature-resistant flame-retardant nano silicon rubber is prepared from the following raw materials of silicon rubber, nano aluminium oxide, methacrylic acid, azodiisobutyronitrile, stearic acid, stannous octoate, antimonous oxide, fluoro trichloromethane, dicumyl peroxide and triethylene tetramine. The high temperature-resistant flame-retardant nano silicon rubber has the advantages that the oil-resistant property is good, the anti-corrosive property is realized, the cost is low, the bending strength is 80-100MPa, and the oxygen index is 35-45%; the tensile strength is 120-160MPa, the vicat softening point is 150-170 DEG C, the anti-abrasive property and elasticity are good, and the elastic modulus is 12-16MPa; the shore hardness is 105-115, resources of the raw materials are rich, and the impact strength is 55-75J / m; the elongation at break is 220-260%, the high temperature-resistant flame-retardant nano silicon rubber can be widely applied under various extreme environments, and the easiness in aging after the rubber works under the high-temperature environment for a long time is avoided.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a high-temperature-resistant flame-retardant nano-silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber is made from latex, and some of the non-rubber components contained in the latex remain in the solid silicone rubber. Generally, silicone rubber contains 92%-95% rubber hydrocarbons, while non-rubber hydrocarbons account for 5%-8%. Due to different production methods, different production areas and even different rubber harvesting seasons, the proportions of these ingredients may vary, but they are basically within the range. [0003] Manufacturers of silicone rubber generally have dozens or even hundreds of varieties and grades, most of which are numbered according to product characteristics and uses, and are also classified according to vulcanization methods and chemical structures. According to the vulcanization temperatur...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/02C08K3/22C08K5/09C08K5/14C08K5/17B29C47/92B29C48/92
CPCC08K13/02B29C48/92B29C2948/9259B29C2948/92704C08K3/22C08K3/2279C08K5/09C08K5/14C08K5/17C08K2003/2227C08K2201/011C08K2201/014C08L2201/02C08L2201/08C08L83/04
Inventor 周静娟
Owner 苏州直角新材料有限公司
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