Fire-retardant modified asphalt material and preparing method

A technology of modified asphalt and flame retardant modifier, which is applied in the direction of building insulation materials, building components, buildings, etc. It can solve the problems of lower flame retardancy of linoleum, affect the quality of asphalt, lose flame retardant effect, etc., and achieve flame retardancy Good, low cost, and the effect of improving safety performance

Inactive Publication Date: 2007-08-29
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Invention patent 95117026.0 once disclosed a kind of asphalt linoleum used for roof waterproofing. It is made by adding flame retardants such as ammonium phosphate and magnesium hydroxide to the asphalt. It has never been used in roads.
[0005] Invention patent 92105725.3 has also disclosed a kind of non-combustible asphalt and linoleum, which is to add chemical products such as sodium bicarbonate to the asphalt to improve its flame retardancy, but because sodium bicarbonate is easily decomposed at high temperature and loses the flame-retardant effect. The flame retardancy of this linoleum is greatly reduced
Because brominated flame retardants are highly toxic substances, they have been clearly banned or restricted in many fields in the world; however, the compatibility of metal oxides with asphalt is poor, and they are easy to segregate, which affects the quality of asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] (1) Weigh raw materials according to the following ratio

[0033] Flame-retardant modified asphalt: base asphalt 100 parts

[0034] Rubber modifier 5 parts

[0035] Flame retardant modifier 6 parts

[0036] Flame retardant modifier: inorganic aluminum-based flame retardant aluminum hydroxide powder 100 parts

[0037] Silicone flame retardant SFR-100 12 parts

[0038] Coupling agent silane KH-550 5 parts

[0039] Light stabilizer phenyl salicylate 6 parts

[0040] (2) Preparation process

[0041] Step 1: Put the inorganic aluminum-based flame retardant aluminum hydroxide powder in the reaction kettle, heat and keep the temperature to 30°C, start stirring, then add the organic silicon-based flame retardant silicone resin SFR-100, and close the lid. Stir at a constant speed for 15 minutes;

[0042] Step 2: Open the reaction kettle, then add coupling agent silane KH-550 and light stabilizer phenyl salicy...

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PUM

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Abstract

The invention relates to a inflaming retarding modification pitch material that includes ground substance pitch, rubber modification agent and inflaming retarding modification agent. It adopts high speed shear mixing emulsion machine to make inflaming retarding modification pitch material that includes the following steps: dehydrating for 30min at 110 degree centigrade, heating to 175 degree centigrade, adding SBS, cutting for 10min, and adding inflaming modification agent and cutting for 5min. The invention has the advantages of high temperature stability, low temperature crack resistance, good covering ability to stone, and good anti-aging and excellent inflaming retarding ability.

Description

1. Technical field [0001] The invention relates to a flame-retardant modified asphalt material, and in particular provides a flame-retardant modified asphalt material for high-grade road tunnels and a preparation method. 2. Background technology [0002] With the development of expressways in our country, the number of highway tunnels is also increasing, but the road pavement in tunnels is still mainly limited to cement concrete. Many studies at home and abroad have shown that cement concrete is difficult to meet the requirements of modern tunnel pavement, and asphalt concrete will gradually become the mainstream of tunnel pavement development. According to the conditions of use in the tunnel, how to improve the flame retardancy of asphalt and the water stability of its mixture has become the key technology of this research. However, there is no relevant literature report at home and abroad. The composition of asphalt is extremely complex. It is generally believed that asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/54C08L53/00C08K3/22C08K5/10
Inventor 陈仕周陈辉强
Owner 重庆市智翔铺道技术工程有限公司
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