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Novel cable coating composite material, and preparation method thereof

A composite material and cable technology, which is applied in the field of new cable coating composite materials and its preparation, can solve the problems of fire spread and high hazards, and achieve the goals of improving mechanical properties and heat resistance, improving flame retardancy, and reducing costs Effect

Inactive Publication Date: 2018-04-20
河南大松仪器设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surface of many silicone rubber compositions currently used for cable coatings crumbles when burned, exposing unburned polymer and matrix, allowing fire to spread and, therefore, being very hazardous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] A preparation method of a novel cable coating composite material includes the following steps:

[0021] (1) Surface modification of anhydrous calcium sulfate: dissolve the coupling agent vinyl triethoxy silane in 250-290ml absolute ethanol, stir at 33-42°C for 3-5 hours, and filter for 6-7 with suction Then add the coupling agent vinyl triethoxy silane and calcium sulfate to absolute ethanol, and stir for 36-45 minutes, ultrasonic for 9-11 minutes, and then stir for 10-15 minutes; Water ethanol is suction filtered, washed 2-3 times, and then dried in a vacuum box at 45-55°C for 23-25 ​​hours to obtain dry modified anhydrous calcium sulfate;

[0022] (2) Add polydimethylsiloxane and modified anhydrous calcium sulfate treated in step (1) into a high-speed mixer, stir at 30-35°C for 25-35min to obtain polydimethylsiloxane Mixture with modified anhydrous calcium sulfate;

[0023] (3) The mixture obtained in step (2) is solidified at a temperature of 100-170° C. for 40-60 min, an...

Embodiment 1

[0029] The weight ratio of raw materials in this embodiment: 65 parts of polydimethylsiloxane, 15 parts of calcium sulfate, and 35 parts of coupling agent vinyltriethoxysilane.

[0030] Preparation:

[0031] (1) Surface modification of anhydrous calcium sulfate: dissolve the coupling agent vinyl triethoxy silane in 250 ml of absolute ethanol, stir at 33°C for 3 hours, and filter 6 times with suction until the impurities are removed; The linking agent vinyl triethoxy silane and calcium sulfate are added to absolute ethanol and stirred for 40 minutes, ultrasonicated for 10 minutes, and then stirred for 15 minutes; then filtered with absolute ethanol, cleaned 3 times, and then placed in a vacuum box Dry at 50°C for 25 hours to obtain dry modified anhydrous calcium sulfate;

[0032] (2) Add polydimethylsiloxane and modified anhydrous calcium sulfate treated in step (1) into a high-speed mixer, stir at 33°C for 35min, to obtain polydimethylsiloxane and modified calcium sulfate A mixture...

Embodiment 2

[0036] The weight ratio of the raw materials in this embodiment: 55 parts of polydimethylsiloxane, 28 parts of calcium sulfate, and 45 parts of coupling agent vinyltriethoxysilane.

[0037] Preparation:

[0038] (1) Surface modification of anhydrous calcium sulfate: dissolve the coupling agent vinyl triethoxy silane in 250 ml of absolute ethanol, stir at 33°C for 3 hours, and filter 6 times with suction until the impurities are removed; The linking agent vinyl triethoxy silane and calcium sulfate are added to absolute ethanol and stirred for 40 minutes, ultrasonicated for 10 minutes, and then stirred for 15 minutes; then filtered with absolute ethanol, cleaned 3 times, and then placed in a vacuum box Dry at 50°C for 25 hours to obtain dry modified anhydrous calcium sulfate;

[0039] (2) Add polydimethylsiloxane and modified anhydrous calcium sulfate treated in step (1) into a high-speed mixer, stir at 33°C for 35min, to obtain polydimethylsiloxane and modified calcium sulfate A mix...

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PUM

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Abstract

The invention discloses a novel cable coating composite material and a preparation method thereof. The composite material is made of the following raw materials in parts by weight: 55-65 parts of polydimethylsiloxane, 15-28 parts of calcium sulfate, even Joint agent vinyltriethoxysilane 35-45 parts. Its preparation method is to dissolve the coupling agent vinyltriethoxysilane in 250-290ml of absolute ethanol, stir at 33-42°C for 3-5 hours, and suction filter 6-7 times; then the coupling agent Add vinyltriethoxysilane and calcium sulfate to absolute ethanol and stir for 36-45 minutes, ultrasonic for 9-11 minutes, and then stir for 10-15 minutes; filter with absolute ethanol, wash 2-3 times, Then dry in a vacuum box at 45-55°C for 23-25 ​​hours to obtain modified anhydrous calcium sulfate; add polydimethylsiloxane and modified anhydrous calcium sulfate to a high-speed stirrer, Stir for 25-35 minutes to obtain a mixture of polydimethylsiloxane and modified anhydrous calcium sulfate; solidify the obtained mixture at a temperature of 100-170°C for 40-60 minutes, and then cool it with normal temperature water to obtain the product.

Description

Technical field [0001] The invention relates to a cable coating composite material and a preparation method thereof, in particular to a novel cable coating composite material and a preparation method thereof. Background technique [0002] At present, the surface of many silicone rubber compositions used for cable coatings is broken during combustion, exposing unburned polymers and substrates, allowing the fire to spread, and therefore, it is very harmful. Summary of the invention [0003] The purpose of the present invention is to provide a modified cable coating composite material with high strength and good flame retardancy and a preparation method thereof. [0004] The technical scheme adopted by the present invention is as follows: [0005] A new type of cable coating composite material, which is characterized in that it is made of the following parts by weight of raw materials: 55-65 parts of polydimethylsiloxane, 15-28 parts of calcium sulfate, coupling agent vinyl triethoxy 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K9/06C08K3/30
CPCC08K9/06C08K3/30C08K2003/3045C08L83/04
Inventor 刘真
Owner 河南大松仪器设备有限公司
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