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A flame-retardant and smoke-suppressing modified emulsified asphalt and its preparation method and application

An emulsified asphalt and smoke-suppressing technology, which is applied in the field of asphalt mixing at room temperature, can solve the problems of poor flame-retardant and smoke-suppressing effects, poor compatibility, and high cost, and achieve unaffected road performance and good compatibility , low-cost effect

Active Publication Date: 2021-05-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on flame retardant and smoke suppression of asphalt pavement in tunnels by adding zinc borate and brominated flame retardants, etc., but it is not environmentally friendly, high cost, poor flame retardant and smoke suppression effect, and poor compatibility

Method used

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  • A flame-retardant and smoke-suppressing modified emulsified asphalt and its preparation method and application
  • A flame-retardant and smoke-suppressing modified emulsified asphalt and its preparation method and application
  • A flame-retardant and smoke-suppressing modified emulsified asphalt and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Aluminum hydroxide used in the embodiment

[0039]

[0040] raw material:

[0041] 100 parts of road grade A matrix asphalt, 10 parts of aluminum hydroxide modified epoxy resin latex, 1 part of SBR modified latex (solid content 40%), 1 part of cationic mid-cracking emulsifier, inorganic aluminum hydroxide special surfactant (Span surfactant) 1 part, water 30 parts; aluminum hydroxide modified epoxy resin latex consists of 100 parts of epichlorohydrin, 100 parts of bisphenol A, and 1 part of aluminum hydroxide.

[0042] Preparation:

[0043] (1) detect aluminum hydroxide particle diameter;

[0044] (2) adopting aluminum hydroxide, epichlorohydrin and bisphenol A to carry out compounding, be mixed with aluminum hydroxide modified epoxy resin latex;

[0045] (3) Heat the base asphalt to 130°C 3 hours in advance;

[0046] (4) Inject the emulsifier into water at 60°C, and form an emulsion after stirring; then inject the aluminum hydroxide modified epoxy resin latex in...

Embodiment 2

[0050] Aluminum hydroxide used in the embodiment

[0051]

[0052] raw material:

[0053] 100 parts of road grade A matrix asphalt, 15 parts of aluminum hydroxide modified epoxy resin latex, 3 parts of SBS modified latex (solid content 40%), 2 parts of cationic mid-cracking emulsifier, special inorganic aluminum hydroxide surfactant (Span surfactant) 2 parts, water 35 parts; Aluminum hydroxide modified epoxy resin latex consists of 100 parts of epichlorohydrin, 100 parts of bisphenol A, and 10 parts of aluminum hydroxide.

[0054] Preparation

[0055] (1) detect aluminum hydroxide particle diameter;

[0056] (2) adopting aluminum hydroxide, epichlorohydrin and bisphenol A to carry out compounding, be mixed with aluminum hydroxide modified epoxy resin latex;

[0057] (3) Heat the base asphalt to 135°C 3 hours in advance;

[0058] (4) Inject the emulsifier into water at 65°C, and form an emulsion after stirring; then inject the aluminum hydroxide modified epoxy resin latex ...

Embodiment 3

[0062] Aluminum hydroxide used in the embodiment

[0063]

[0064] formula:

[0065] 100 parts of road grade A matrix asphalt, 20 parts of aluminum hydroxide modified epoxy resin latex, 4 parts of SBS modified latex (solid content 50%), 3 parts of cationic slow-cracking emulsifier, special inorganic aluminum hydroxide surfactant (Span surfactant) 3 parts, water 40 parts; Aluminum hydroxide modified epoxy resin latex consists of 100 parts of epichlorohydrin, 100 parts of bisphenol A, and 20 parts of aluminum hydroxide.

[0066] Preparation

[0067] (1) detect aluminum hydroxide particle diameter;

[0068] (2) adopting aluminum hydroxide, epichlorohydrin and bisphenol A to carry out compounding, be mixed with aluminum hydroxide modified epoxy resin latex;

[0069] (3) Heat the base asphalt to 140°C;

[0070] (4) Inject the emulsifier into water at 70°C, and form an emulsion after stirring; then inject the aluminum hydroxide modified epoxy resin latex into the stirred emul...

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Abstract

The invention discloses a flame-retardant and smoke-suppressing modified emulsified asphalt and its preparation method and application. The flame-retardant and smoke-suppressing modified emulsified asphalt is mainly made of the following raw materials in parts by weight: 100 parts of base asphalt, hydrogenated 10-20 parts of aluminum-modified epoxy resin latex, 1-4 parts of modified latex, 1-3 parts of emulsifier, 1-3 parts of auxiliary agent, and 30-40 parts of water. The flame-retardant and smoke-suppressing modified emulsified asphalt of the present invention adopts aluminum hydroxide modified epoxy resin latex to comprehensively modify the base asphalt, and has the advantages of environmental protection, low cost, high activity, good compatibility with asphalt, and flame-retardant performance. Excellent, good stability during use, etc., and the preparation method is simple and convenient, the source of raw materials is wide, and it can be produced and applied on a large scale. middle.

Description

technical field [0001] The invention belongs to the technical field of using normal temperature mixed asphalt on the tunnel pavement, specifically relates to the design of the indoor mix ratio of different materials and on-site preparation and production methods, and can be applied to a flame-retardant and smoke-suppressing type improvement in the pavement maintenance of long tunnels. Sexual emulsified asphalt and its preparation method and application. Background technique [0002] With the acceleration of highway construction in our country, there are more and more large-scale tunnel projects. Considering the flammability of asphalt, there are certain fire safety hazards in tunnels, especially in large road tunnels. The temperature after a fire in the tunnel far exceeds the flash point and ignition point of asphalt. Once the asphalt burns, it will not only fuel the fire Development and spread, and will produce a lot of toxic gas and smoke. With the continuous increase in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08L9/06C08K3/22
CPCC08K2003/2227C08L95/00C08L2205/03C08L63/00C08L9/06C08K3/22
Inventor 马涛夏菲陈田刘昕宇付坤张伟光
Owner SOUTHEAST UNIV