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Flame-retardant fire-resistant rubber composition and preparation method thereof, and flame-retardant fire-resistant rubber wrapping tape

A rubber composition, flame-retardant and fire-resistant technology, applied in the field of flame-retardant fire-resistant rubber composition, fire-resistant flame-retardant rubber tape, can solve the problems of powdering and falling off of combustion products, low fire resistance level, short storage period, etc., and achieve good performance Elasticity and softness, excellent flame retardant performance, easy and safe to use

Inactive Publication Date: 2014-05-28
秦荣勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mica tape insulated fire-resistant cable has the following defects: 1. The combustion products of the mica tape will pulverize and fall off in the event of a fire, and it is difficult to withstand the harsh fire site environment such as vibration and spraying, so its fire resistance level is not high; Short, it will absorb moisture in the air, reduce its electrical properties, and even cause delamination to affect its normal use
Magnesium oxide mineral insulated cables have excellent fire resistance, but their processing costs are high, requiring special complete sets of equipment, and there are special requirements for their installation and laying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The present invention also provides a kind of preparation method of above-mentioned flame-retardant refractory rubber composition, it comprises the following steps:

[0034] Mix the organic polymer, reinforcing filler, non-reinforcing filler, flame retardant, coupling agent, and liquid operating oil in the above flame-retardant and refractory rubber composition in a rubber mixer at a temperature not higher than 180°C. knead evenly to obtain a dough composition, and place the dough composition for cooling for at least 2 hours;

[0035] The cooled lump mixture is kneaded on an open mill, and then the kneaded mixture is cut into strips;

[0036] The above-mentioned strip mixture is filtered on a gel filter;

[0037] An appropriate amount of curing agent is selected according to the difference of the organic polymer, and the curing agent is added to the filtered mixture through an open mill for kneading to obtain the flame-retardant and refractory rubber composition.

[0...

Embodiment 1

[0050] Take 100 parts of natural rubber, 50 parts of carbon black with a particle size of less than 40 nanometers, 1 part of vinyltriethoxysilane, 60 parts of silicate glass powder, 70 parts of aluminum hydroxide, 5 parts of methyl silicone oil and 8 parts of The sulfur compound is prepared according to the preparation method of the above-mentioned flame-retardant and refractory rubber composition.

[0051] After testing, the material properties of the flame-retardant refractory rubber composition are as follows:

[0052] Tensile strength: 15MPa;

[0053] Elongation at break: 450%;

[0054] Breakdown strength: 14.5KV / mm;

[0055] Volume resistivity: 1.2E+15;

[0056] Oxygen index: 29.

Embodiment 2

[0058] Take 100 parts of methyl vinyl silicone rubber, 50 parts of fumed silica, 5 parts of hydroxyl silicone oil, 1 part of vinyltrimethoxysilane, 20 parts of borate glass powder, 90 parts of aluminum hydroxide and 3 parts of 2, 4-dichlorobenzoyl peroxide (two two, four), obtain according to the preparation method of above-mentioned fire-retardant fire-resistant rubber composition.

[0059] After testing, the material properties of the flame-retardant refractory rubber composition are as follows:

[0060] Tensile strength: 6.4MPa;

[0061] Elongation at break: 185%;

[0062] Breakdown strength: 20KV / mm;

[0063] Volume resistivity: 5.12E+14;

[0064] Oxygen index: 35.

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Abstract

The invention provides a flame-retardant fire-resistant rubber composition and a preparation method thereof, and a flame-retardant fire-resistant rubber wrapping tape. The flame-retardant fire-resistant rubber composition is prepared from the following components in parts by mass: 50-120 parts of an organic polymer, 10-100 parts of a reinforcing filler, 20-80 parts of a non-reinforcing filler, 5-120 parts of a flame-retardant agent, 0.1-5 parts of a coupling agent, 1-30 parts of a liquid operation oil, and 1-10 parts of a curing agent. The flame-retardant fire-resistant rubber composition and the preparation method thereof and the flame-retardant fire-resistant rubber wrapping tape have the advantages of excellent flame-retardant fire-resistant performance, good elasticity, good flexibility, simple and safe use and lower cost.

Description

technical field [0001] The invention relates to the technical field of flame-retardant and refractory materials, in particular to a flame-retardant and refractory rubber composition, a preparation method and a fire-resistant and flame-resistant rubber wrapping tape. Background technique [0002] The flame retardancy of building materials and maintaining power supply and communication in the event of a fire are important for the safety of residents and effective firefighting. Therefore, many countries have formulated safety standards for building materials under fire conditions. For fire-resistant cables, there are BS6387CWZ, DIN4102, UL2196, EN50200, IEC60331-11, NFC32070CR1, GB12666.6 and other standards. [0003] At present, flame-retardant and fire-resistant cables mainly use mica tape and magnesium oxide mineral insulation to achieve flame-retardant and fire-resistant functions. Mica tape insulated fire-resistant cables have the following defects: 1. The mica tape will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/02C08K3/04C08K5/5425C08K3/40C08K3/22C08L83/07C08K3/36C08L23/08C08L23/16C08K13/06C08K9/00C08L83/04C08K3/38C08L9/00B32B25/10H01B7/02H01B7/295
Inventor 秦荣勤
Owner 秦荣勤
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