Novel high-performance cooperative system flame retarding asphalt

A high-performance, modified asphalt technology, applied in the field of flame retardant materials, can solve the problem of limited application, and achieve the effects of reducing production costs, reducing flammability, and reducing emissions

Active Publication Date: 2013-02-27
CHINA ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone flame retardant is a new generation of non-halogen carbon-forming flame retardant with high efficiency, eco-friendly, anti-melt drop and smoke suppression. It can not only improve the processing performance, mechanical performance and heat resistance of the substrate, but also be flame retardant The recycling effect of materials is also very good, but a single silicone flame retardant is only effective for some high polymers, and its application is not wide

Method used

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  • Novel high-performance cooperative system flame retarding asphalt

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: 100 kg of coal tar pitch, 4 kg of powdered styrene-butadiene rubber, 24 kg of organosilicon flame retardant, 16 kg of stearate and potassium silicate, 12 kg of catalytic cracking oil slurry and heavy deasphalted oil, and 4 kg of zinc borate. Add coal tar pitch, powdered styrene-butadiene rubber, catalytic cracking oil slurry and heavy deasphalted oil into a high-speed shearer and stir for 14 hours at a temperature of 165 ° C, with a rotation speed of 4000 rpm; then, under the same temperature and stirring conditions, the Silicone flame retardant, stearate, potassium silicate and zinc borate were added to the high-speed shearer at a constant speed within 5 minutes and continued to stir for 5 hours. After cooling at room temperature, a synergistic flame-retardant asphalt was obtained.

Embodiment 2

[0036] Example 2: Shale asphalt 100kg, powdered styrene-butadiene rubber 3kg, organosilicon flame retardant 18kg, dibasic lead phosphite and tribasic lead sulfate 11kg, solvent refined extraction oil and naphthenic oil 9kg, zinc borate 3kg. Add modified shale asphalt, powdered styrene-butadiene rubber, solvent-refined oil and naphthenic oil into a high-speed shearer and stir for 10 hours at a temperature of 150°C at a speed of 3500rpm; then under the same temperature and stirring conditions, The organic silicon flame retardant, dibasic lead phosphite, tribasic lead sulfate and zinc borate were added to the high-speed shearer at a constant speed within 5 minutes and continued to stir for 4 hours. After cooling at room temperature, the synergistic system flame-retardant asphalt was obtained.

Embodiment 3

[0037] Example 3: 100 kg of coal tar pitch and petroleum pitch, 2 kg of powdered styrene-butadiene rubber, 10 kg of organic silicon flame retardant, 7 kg of calcium carbonate, 5 kg of white oil and coal tar fraction, and 2 kg of zinc borate. Add coal tar pitch, petroleum pitch, powdered styrene-butadiene rubber, white oil and coal tar fractions into a high-speed shearer and stir for 6 hours at a temperature of 140 ° C, with a rotation speed of 2500 rpm; then, under the same temperature and stirring conditions, the The silicone flame retardant, calcium carbonate and zinc borate were added to the high-speed shearer at a constant speed within 5 minutes and continued to stir for 3 hours. After cooling at room temperature, the synergistic system flame-retardant asphalt was obtained.

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Abstract

The invention discloses novel high-performance cooperative system flame retarding asphalt which is characterized by comprising the following components in parts by weight: 100 parts of asphalt, 1-30 parts of flame retardant, 1-20 parts of synergist, 2-15 parts of compatilizer and 2-4 parts of modifier, wherein the asphalt is one or more of coal tar asphalt, shale asphalt and petroleum asphalt; the flame retardant is an organic silicon flame retardant; the organic silicon flame retardant is reacted with a small amount of zinc borate at a temperature of 90 DEG C for 1.5 hours to obtain a smoke suppression organic silicon flame retardant; the synergist is one or more of stearate, potassium silicate, dibasic lead phosphate, tribasic lead sulfate and calcium carbonate; the compatilizer is one or more of catalytic cracking slurry, de-asphalted oil, solvent refining extract oil, naphthenic oil, white oil and coal tar fraction; and the modifier is powdered butadiene styrene rubber added with anti-aging agent and parting agent. According to the method, the flame retarding effect of the organic silicon flame retardant is improved and the applicability of the organic silicon flame retardant is improved.

Description

technical field [0001] The invention relates to the technical field of flame-retardant materials, in particular to a novel high-performance synergistic system flame-retardant asphalt. Background technique [0002] Asphalt concrete pavement has the advantages of comfortable driving, low noise, good anti-skid performance, high traffic safety, and easy maintenance. It is gradually favored by designers and builders in highway construction. However, due to the flammability of asphalt, when a fire occurs in a tunnel, especially after a fire occurs in an oil-immersed state, asphalt burning will produce a large amount of toxic smoke, which will easily cause heavy losses to personnel and property. Therefore, improving the flame retardant performance of asphalt has very important practical significance for improving the traffic safety performance in tunnels and eliminating hidden dangers of traffic accidents. [0003] Commonly used flame retardants have good flame retardant effects, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L9/06C08L83/04C08L83/08C08K13/02C08K3/38C08K5/098C08K3/34C08K3/32C08K3/30C08K3/26
Inventor 田斌汪淼沈兆普陈刚
Owner CHINA ROAD & BRIDGE
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