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Environment-friendly flame retardant asphalt and preparation method thereof

An environmentally friendly and asphalt technology, applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of low decomposition temperature, increase working steps, and be unfavorable to construction, reduce the addition amount, improve flame retardant performance, flame retardant and smoke suppression effect

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN200610082139.0 introduces a kind of halogen-free flame retardant asphalt for road use, wherein the flame retardant is melamine pyrophosphate, zinc borate and magnesium hydroxide. Aluminum hydroxide is added to the material, which increases the work steps and is not conducive to the construction
And because the decomposition temperature of aluminum hydroxide is low (140-150 ℃), it also limits its application

Method used

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  • Environment-friendly flame retardant asphalt and preparation method thereof
  • Environment-friendly flame retardant asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Add magnesium aluminum carbonate hydrotalcite (particle size is 20-40nm), appropriate amount of deionized water and titanate coupling agent NDZ-201 accounting for 5% of the hydrotalcite weight into the reactor in sequence, and put it in a constant temperature water bath at 80°C. Continue stirring for 1 h, filter, wash, and dry to obtain surface-modified hydrotalcite.

[0023] Step 2: Add 3 parts of melamine phosphate and 0.6 parts of surface-modified hydrotalcite to 100 parts of 160°C 4% SBS modified asphalt, and stir and mix with ordinary stirring (450rpm / min) for 1 hour to obtain flame-retardant SBS modified asphalt .

Embodiment 2

[0025] The method for preparing the surface-modified hydrotalcite is the same as step 1 in Example 1, the coupling agent is stearic acid, and the dosage is 8% of the weight of the hydrotalcite.

[0026] Add 6 parts of melamine phosphate and 1.2 parts of surface-modified hydrotalcite to 100 parts of SBS modified asphalt at 160°C, and mix with ordinary stirring (450 rpm / min) for 1 hour to obtain flame-retardant SBS modified asphalt.

Embodiment 3

[0028] The method for preparing the surface-modified hydrotalcite is the same as step 1 in Example 1, the coupling agent is a silane coupling agent, and the dosage is 10% of the weight of the hydrotalcite.

[0029] Add 9 parts of melamine phosphate and 1.8 parts of surface-modified hydrotalcite to 100 parts of 160°C SBS modified asphalt, and mix with ordinary stirring (450rpm / min) for 1 hour to obtain flame-retardant SBS modified asphalt.

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Abstract

The invention discloses environment-friendly flame retardant asphalt and a preparation method thereof. The flame retardant asphalt comprises, by mass, 100 parts of base asphalt, 2 to 15 parts of a fire retardant and 0.5 to 5 parts of a surface modified nano-material hydrotalcite. The preparation method comprises the steps of adding the fire retardant and the nano-material hydrotalcite into the base asphalt at a temperature of 120 to 180 DEG C and carrying out stirring for uniform mixing. According to the invention, the composition of asphalt has good flame retardant performance; additives used in the invention are environment-friendly, cost little and have good stability; a preparation process is simple.

Description

technical field [0001] The invention relates to a flame-retardant asphalt composition and a preparation method thereof, in particular to an environment-friendly flame-retardant asphalt composition and a preparation method thereof. Background technique [0002] With the development of highway construction in our country, the number of highway tunnels is also increasing. The rigid cement concrete pavement commonly used in tunnels is gradually replaced by smooth, wear-resistant and low-noise flexible asphalt concrete pavement. During the use of tunnel asphalt pavement, the fire safety of asphalt concrete pavement has attracted more and more attention. Because asphalt is a flammable material, and the ventilation conditions in the tunnel are poor, if a traffic accident causes the asphalt pavement to catch fire, the fire will develop rapidly and the personnel will not be able to evacuate in time, resulting in greater casualties, which will inevitably cause damage to the country a...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K13/06C08K9/04C08K9/06C08K3/26C08K3/38C08K3/22C08K5/3492C08K3/02
Inventor 李明林郭皎河
Owner CHINA PETROLEUM & CHEM CORP
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