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Efficient composite emulsion modifier

A technology of composite emulsion and modifier, applied in building components, building insulation materials, buildings, etc., can solve the problems of network structure damage, easy to boil, poor storage stability, etc., to promote compatibility, reduce Gibbs free energy effect

Active Publication Date: 2015-05-13
南通福伦利新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The emulsification of modified asphalt has the following technical problems: when modifying asphalt, it is necessary to use equipment with strong shear force, but when the shear force is too strong, the shear effect will destroy the formed network structure, The modification effect is reduced; modified asphalt is extremely difficult to emulsify, and an emulsifier with excellent performance is required to emulsify: the temperature difference between modified asphalt and soap liquid is large during emulsification, and boiling is prone to occur, making emulsification difficult; the finished product after emulsification has a higher temperature , it is easy to cause the newly produced emulsion to break; the density of the modified asphalt is high, the particle size of the emulsified asphalt is large, and the storage stability is poor

Method used

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Effect test

Embodiment 1

[0032] A preparation method of high-efficiency composite emulsion modifier, comprising as follows:

[0033] (1) Preparation of styrene-butadiene-styrene thermoplastic elastomer aqueous latex;

[0034] (2) Add ethylene-vinyl acetate aqueous emulsion (FG-CP606W) / cationic anti-strong acid self-crosslinking modified acrylate emulsion (FG-H1811) to styrene-butadiene-styrene thermoplastic elastomer aqueous latex The blended emulsion is optimized and compounded; when the blending ratio of FG-CP606W / FG-H1811 is 80 / 20, the emulsion has the best performance; among them, styrene-butadiene-styrene thermoplastic elastomer water latex: Blended emulsion weight ratio = 1:3;

[0035] (3) In the room temperature asphalt composite emulsion, the weight percentage of styrene-butadiene-styrene thermoplastic elastomer water latex is 5%, the FG-CP606W / FG-H1811 blend emulsion (80 / 20) is 15%, and the asphalt 55% for water, 45% for water;

[0036] (4) Compound styrene-butadiene-styrene thermoplas...

Embodiment 2

[0040] A preparation method of high-efficiency composite emulsion modifier, comprising as follows:

[0041] (1) Preparation of styrene-butadiene-styrene thermoplastic elastomer aqueous latex;

[0042] (2) Add ethylene-vinyl acetate aqueous emulsion (FG-CP606W) / cationic anti-strong acid self-crosslinking modified acrylate emulsion (FG-H1811) to styrene-butadiene-styrene thermoplastic elastomer aqueous latex The blended emulsion is optimized and compounded; when the blending ratio of FG-CP606W / FG-H1811 is 80 / 20, the emulsion has the best performance; among them, styrene-butadiene-styrene thermoplastic elastomer water latex: Blended emulsion weight ratio=2:3

[0043] (3) In the room temperature asphalt composite emulsion, the weight percentage of styrene-butadiene-styrene thermoplastic elastomer water latex is 10%, the FG-CP606W / FG-H1811 blend emulsion (80 / 20) is 15%, and the asphalt 65% for water, 35% for water;

[0044] (4) Compound styrene-butadiene-styrene thermoplasti...

Embodiment 3

[0049] A preparation method of high-efficiency composite emulsion modifier, comprising as follows:

[0050] (1) Preparation of styrene-butadiene-styrene thermoplastic elastomer aqueous latex;

[0051] (2) Add ethylene-vinyl acetate aqueous emulsion (FG-CP606W) / cationic anti-strong acid self-crosslinking modified acrylate emulsion (FG-H1811) to styrene-butadiene-styrene thermoplastic elastomer aqueous latex The blended emulsion is optimized and compounded; when the blending ratio of FG-CP606W / FG-H1811 is 80 / 20, the emulsion has the best performance;

[0052] (3) In the room temperature asphalt composite emulsion, the weight percentage of styrene-butadiene-styrene thermoplastic elastomer water latex is 7%, the FG-CP606W / FG-H1811 blend emulsion (80 / 20) is 14%, the asphalt 58% for water, 29% for water;

[0053] (4) Compound styrene-butadiene-styrene thermoplastic elastomer water latex and optimized CP606W / H1811 according to the above mass ratio, and add lignoamine cationic a...

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Abstract

The invention discloses a preparation method of an efficient composite emulsion modifier. Under the action of a preferred tasteless sulfur-contained cross-linking agent, a double bond of a polybutadiene segment of a composite polymer or methylene adjacent to the double bond is very active, can react with heteroatoms and active groups in asphalt so as to graft the asphalt onto the composite polymer to generate a polymer-asphalt graft. The graft acts as a surfactant between a polymer phase and an asphalt phase, so that surface tensions between the polymer and the asphalt as well as Gibbs free energy of a system are reduced, and better compatibility of the polymer and the asphalt is promoted. Therefore, a polymer-modified asphalt emulsion is promoted to form a more stable system.

Description

technical field [0001] The invention specifically relates to a high-efficiency composite emulsion modifier. Background technique [0002] The emulsification process of modified emulsified asphalt is complicated. The complex polymer and asphalt in the "seed soap" usually form an emulsion with a short stable period by physical adsorption. Differences, easy to produce physical delamination, resulting in "inhomogeneity" of composite polymer modified asphalt. In polymer-modified bitumen, crosslinking agents are usually added to solve this problem. However, in emulsified asphalt, this research has not been reported. [0003] The preparation of modified emulsified asphalt is mainly to modify and emulsify asphalt. According to the sequence of modification and emulsification, it can be divided into emulsification of modified asphalt, primary mixing modification of emulsifying modifier and asphalt emulsification, and secondary thermal mixing. Three methods of modifying emulsified a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/08C08L33/04C08J3/03C08J3/24
Inventor 蔡海军
Owner 南通福伦利新材料有限公司
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