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Asphalt flame-retardant modifier, and flame-retardant modified asphalt and preparation thereof

A technology of flame retardant modifier and modified asphalt, applied in building components, building insulation materials, buildings, etc., can solve the problems of reduced structural bearing capacity, increased fire risk, damaged asphalt performance, etc., and achieves good flame retardant performance. , the effect of excellent economic and environmental protection indicators

Inactive Publication Date: 2011-05-04
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, asphalt materials are flammable in the air, and the risk of fire caused by them is gradually increasing, especially as pavement materials in long-distance tunnels, due to the limited space in the tunnels
Once a fire breaks out, the temperature rises suddenly in a short period of time, which can not only ignite the ordinary asphalt pavement and wall decoration inside the tunnel, generate a large amount of toxic smoke, reduce the visibility of the tunnel, but also damage the waterproof system of the tunnel, causing water seepage and leakage to varying degrees in the tunnel. Completely cause huge damage to the lining, resulting in the reduction or complete loss of the bearing capacity of the structure, making it difficult for victims to escape and rescue work, resulting in large-scale casualties and property losses
In addition, people are currently pursuing high flame retardant properties, but this pursuit is exactly in contradiction with the current limited asphalt flame retardant technology, and only a large amount of flame retardants can be used to achieve the goal.
This not only increases the cost of the asphalt pavement, but more seriously, the flame retardant destroys the performance of the asphalt and reduces the road performance of the asphalt pavement

Method used

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  • Asphalt flame-retardant modifier, and flame-retardant modified asphalt and preparation thereof
  • Asphalt flame-retardant modifier, and flame-retardant modified asphalt and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Take by weight 94 parts of 70# matrix asphalt, 6 parts of asphalt flame retardant modifier, 2 parts of blending agent, 1 part of stabilizer;

[0037] The ingredients of the asphalt flame retardant modifier are (parts by weight): decabromodiphenyl ether, 4 parts; antimony white equivalent flame retardant, 2 parts; hydrated magnesium silicate, 5 parts; smoke suppression flame retardant additive, 10 parts .

[0038] The above-mentioned smoke-suppressing and flame-retardant auxiliary agent is one of silicon dioxide, iron oxide, calcium oxide, aluminum hydroxide, magnesium hydroxide or a combination thereof.

[0039] Melting 70# base asphalt: heat the above-mentioned 70# base asphalt to 110°C to reach a molten state, stir for 20 minutes to dehydrate it, then heat it and keep it at 155°C;

[0040] Add other components: Add the asphalt flame retardant modifier to the 90# base asphalt treated by the above steps, and stir while adding. The order of addition is decabromobiphenyl...

Embodiment 2

[0042] Take by weight 94 parts of 90# matrix asphalt, 6 parts of asphalt flame retardant modifier, 2 parts of blending agent, and 1 part of stabilizer;

[0043] The ingredients of the asphalt flame retardant modifier are (parts by weight): decabromodiphenyl ether, 4 parts; antimony white equivalent flame retardant, 2 parts; hydrated magnesium silicate, 5 parts; smoke suppression flame retardant additive, 10 parts .

[0044] The above-mentioned smoke-suppressing and flame-retardant auxiliary agent is one of silicon dioxide, iron oxide, calcium oxide, aluminum hydroxide, magnesium hydroxide or a combination thereof.

[0045] Melting 90# base asphalt: heat the above-mentioned 70# base asphalt to 110°C to reach a molten state, stir for 20 minutes to dehydrate it, then heat it and keep it at 155°C;

[0046] Add other components: Add the asphalt flame retardant modifier to the 90# base asphalt treated by the above steps, and stir while adding. The order of addition is decabromobiph...

Embodiment 3

[0048] Take by weight 94 parts of SBS (I-D) polymer modified asphalt, 6 parts of asphalt flame retardant modifier, 2 parts of blending agent, 1 part of stabilizer;

[0049] The ingredients of the asphalt flame retardant modifier are (parts by weight): decabromodiphenyl ether, 4 parts; antimony white equivalent flame retardant, 2 parts; hydrated magnesium silicate, 5 parts; smoke suppression flame retardant additive, 10 parts .

[0050] The above-mentioned smoke-suppressing and flame-retardant auxiliary agent is one of silicon dioxide, iron oxide, calcium oxide, aluminum hydroxide, magnesium hydroxide or a combination thereof.

[0051] Melt polymer modified asphalt SBS (I-D): heat the above polymer modified asphalt SBS (I-D) to 120°C to reach a molten state, stir for 20 minutes to dehydrate it, then heat it and keep it at 160°C ;

[0052]Add other components: Add the asphalt flame retardant modifier to the polymer modified asphalt SBS (I-D) treated by the above steps, stir wh...

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Abstract

The present invention discloses an asphalt flame-retardant modifier comprising following components: decabromodiphenyl ether, antimony white and other flame retardants, hydrated magnesium silicate and smoke-suppressant. The invention further discloses a flame-retardant modified asphalt prepared with the asphalt flame-retardant modifier and the preparation method thereof, wherein the flame-retardant modified asphalt comprises following components: asphalt, asphalt flame-retardant modifier, blender and stabilizing agent; and the preparation method of the flame-retardant modified asphalt comprises following steps of: heating and melting asphalt, stirring and dehydrating, then successively adding the asphalt flame-retardant modifier, blender and stabilizing agent to obtain the flame-retardant modified asphalt. The flame-retardant modified asphalt disclosed in the present invention has excellent anti-flaming and smoke-suppressing effect and good road performances, and has bright application prospect in the field of road materials.

Description

【Technical field】 [0001] The invention relates to a flame retardant modifier for road asphalt. [0002] The invention also relates to flame-retardant modified asphalt prepared by using the flame retardant and a preparation method thereof. 【Background technique】 [0003] With the development of my country's economy in recent years and the improvement of my country's large-scale road construction technology, it is difficult for cement concrete to meet the requirements of modern tunnel pavement. It is widely used and is currently the main engineering material used in road construction. [0004] "National Expressway Planning Network (7918 Network)" plans that the mileage of expressways to be built in my country will be 85,000 kilometers by 2020, of which asphalt pavement accounts for 93%. However, asphalt materials are flammable in the air, and the risk of fires caused by them is gradually increasing, especially as a pavement material for long-distance tunnels, because the spac...

Claims

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Application Information

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IPC IPC(8): C08K13/02C08K5/06C08K3/22C08K3/34C08K3/36C08L95/00C08L53/02C08L9/06
Inventor 慕为民何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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