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A kind of fireproof blocking material and preparation method thereof

A technology for fire blocking materials and raw materials, applied in the field of fire protection products, can solve the problems of high density of fire blocking materials, loose blocking, easy burning and cracking, etc. Effect

Active Publication Date: 2022-02-11
长沙长缆电工绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fireproof blockages have poor fire resistance and are easy to burn and crack in a fire and cannot effectively prevent the spread of flames and smoke
In addition, during use, the blockage is often cured due to the aging of the binder and the ambient temperature. The volume of the cured blockage shrinks to form a gap, resulting in an imprecise blockage and a potential safety hazard.
The traditional organic fireproof blockage is easy to fall off in a fire, and cannot completely block the fire source and heat. The density of the fireproof blockage is high, and there are many fillers. The organic fireproof blockage is prone to fall off when burning at high temperature.

Method used

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  • A kind of fireproof blocking material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, a kind of fireproof blocking material is prepared, the specific raw materials and process are as follows:

[0038] S1: Mix 6 parts of SEBS (molecular weight: 70,000, brand YH-501) and 3 parts of CR2442 neoprene in an open mill. Among them, when mixing, the mixed rubber of the organic fireproof blockage should be mixed for 15 minutes in an open mill heated to 120°C, and then rolled into sheets;

[0039] S2: Put the mixed rubber in step S1 into a kneader at a temperature of 130° C., add 4 parts of antioxidant 264 and 26 parts of CP52 chlorinated paraffin and knead for 10 minutes;

[0040] S3: Add 36 parts of dolomite powder, 20 parts of silicon micropowder, and 5 parts of precipitated iron oxide red in sequence, and continue kneading for 30 minutes. After mixing, turn over the kneader hopper to discharge, and lower the fireproof plugging material into strips. After 24 hours of storage, samples were prepared for testing.

Embodiment 2

[0042] In this example, a kind of fireproof blocking material is prepared, the specific raw materials and process are as follows:

[0043] S1: Blend 7 parts of SEBS (molecular weight: 100,000, brand YH-502), 1 part of CR2442 neoprene rubber, and 2 parts of CR2441 neoprene rubber in an open mill. Among them, when mixing, the mixed rubber of the organic fireproof blockage should be mixed for 17 minutes in an open mill heated to 125°C, and then rolled into flakes;

[0044] S2: Put the mixed rubber in step S1 into a kneader at a temperature of 125° C., add 4 parts of antioxidant 264 and 24 parts of CP52 chlorinated paraffin and knead for 10 minutes;

[0045] S3: Add 34 parts of dolomite powder, 24 parts of silicon micropowder, and 4 parts of precipitated iron oxide red in sequence, and continue kneading for 30 minutes. After mixing, turn over the hopper of the kneader to discharge, and lower the fireproof plugging material into strips. After 24 hours of storage, samples were prep...

Embodiment 3

[0047] In this example, a kind of fireproof blocking material is prepared, the specific raw materials and process are as follows:

[0048] S1: Blend 6 parts of SEBS (molecular weight: 220,000, brand YH-503) and 4 parts of CR2441 neoprene in an open mill. Among them, when mixing, the mixed rubber of the organic fireproof blockage should be mixed for 20 minutes in an open mill heated to 125°C, and then rolled into flakes;

[0049] S2: Put the mixed rubber in step S1 into a kneader at a temperature of 120° C., add 3 parts of antioxidant 1010, 1 part of tris(nonylphenyl) phosphite (TNP), and 24 parts of CP42 chlorinated paraffin and knead for 10 minutes;

[0050] S3: Add 34 parts of dolomite powder, 24 parts of silicon micropowder, and 4 parts of precipitated iron oxide red in sequence, and continue kneading for 30 minutes. After mixing, turn over the hopper of the kneader to discharge the material, and lower the fireproof sealing material into strips. After 24 hours of storage,...

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Abstract

The invention provides a fireproof blocking material and a preparation method thereof. The raw materials for the preparation of the fireproof blockage include styrene-ethylene-butadiene-styrene block copolymer, chloroprene rubber, chlorinated paraffin, dolomite powder, silicon micropowder, antioxidant and iron oxide red. The fireproof blockage provided by the invention improves the fire resistance of the fireproof blockage and at the same time does not fall off when burning, maintains the durability of fire resistance and reduces the cost of the fireproof blockage. Good moisture and heat resistance, long fire-resistant time. The density is light, the viscosity is better, no heating is needed during use, and it can be directly kneaded for sealing. Meet high fire resistance (≥3.00h). Meet the weather resistance performance, which is embodied in the water resistance (≥3d) and oil resistance (≥3d) of the organic fireproof blockage.

Description

technical field [0001] The invention belongs to the field of fireproof products, and in particular relates to a fireproof blocking material and a preparation method thereof. Background technique [0002] In a building fire, fire and smoke often spread to adjacent houses or other floors through the holes that wires, cables and various pipes pass through, which will expand the fire accident and cause serious consequences. In order to reduce the economic losses caused by wire and cable fires, fireproof sealing materials came into being. Its function is to block the cavities and gaps formed between various pipes, crossing bodies or floors. When a fire occurs, it can effectively prevent the spread of flames and smoke, control the fire within a certain range, and reduce losses. [0003] In the mid-1980s, the fire prevention and sealing industry began with the development of organic and inorganic fire prevention materials, and then developed a series of products such as fire preve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/28
CPCC04B26/26C04B2111/28C04B14/26C04B14/062C04B14/308C04B24/2682C04B24/2688C04B24/02C04B24/003C04B24/045
Inventor 贺志文周易晖曹备
Owner 长沙长缆电工绝缘材料有限公司
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