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Flame retardant and smoke suppression type modified emulsified asphalt and preparation method and application thereof

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 effect, poor compatibility, and high cost, and achieve accelerated promotion and application, good compatibility, and low cost. cheap effect

Active Publication Date: 2019-08-16
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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  • Flame retardant and smoke suppression type modified emulsified asphalt and preparation method and application thereof
  • Flame retardant and smoke suppression type modified emulsified asphalt and preparation method and application thereof
  • Flame retardant and smoke suppression type modified emulsified asphalt and preparation method and application thereof

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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 flame retardant and smoke suppression type modified emulsified asphalt and a preparation method and application thereof. The flame retardant and smoke suppression type modifiedemulsified asphalt is mainly prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 10-20 parts of aluminum hydroxide modified epoxy resin latex, 1-4 parts of modified latex, 1-3 parts of an emulsifier, 1-3 parts of an auxiliary agent and 30-40 parts of water. The flame retardant and smoke suppression type modified emulsified asphalt adoptsthe aluminum hydroxide modified epoxy resin latex to comprehensively modify the matrix asphalt, and has the advantages of environmental protection, low cost, high activity, good compatibility with asphalt, excellent flame retardant performance, good stability in the use process and the like; meanwhile, the preparation method is simple and convenient, the raw material source is wide, and the asphalt can be used for large-scale production and application; and the asphalt can be applied to the maintenance of pavements, road surfaces, bridge deck pavements and long tunnel pavements.

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 Applications(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
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