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Method for preparing low-temperature cross-linked emulsified SBS pitch modifier

A low-temperature cross-linking and cross-linking agent technology, used in building thermal insulation materials, building components, buildings, etc., can solve the problems of reduced stability of modified asphalt, unrecoverable solvents, environmental pollution, etc., achieving less environmental pollution and improving production. environment, avoid the effect of high energy consumption

Inactive Publication Date: 2014-08-06
安徽路达泰克沥青新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the basically non-crosslinked structure leads to a decrease in the stability of the modified asphalt, and at the same time, a large amount of solvent cannot be recovered, which also leads to serious environmental pollution.

Method used

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  • Method for preparing low-temperature cross-linked emulsified SBS pitch modifier

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of low-temperature crosslinking emulsified SBS asphalt modifier, comprises the following steps:

[0020] 1) Material preparation: by weight, including: 35kg of SBS particles, 0.4kg of crosslinking agent, 0.3kg of stabilizer, 2kg of cationic surfactant, 2kg of nonionic surfactant, 105kg of solvent, and 25kg of water. Among them, the crosslinking agent is dibenzoyl peroxide, the stabilizer is sodium carboxymethyl cellulose, the cationic surfactant is dodecyl dimethyl benzyl ammonium bromide, and the nonionic surfactant is fatty alcohol poly Oxyethylene ether, solvent is ethyl acetate.

[0021] 2) Prepare the sol: add the solvent into the reaction kettle at room temperature, then add the crosslinking agent and SBS particles respectively, stir at room temperature for 1 hour, and then take it out of the pot to make the SBS sol;

[0022] 3) Preparation of soap liquid: After mixing water and stabilizer, add cationic surfactant and nonionic surfactant at...

Embodiment 2

[0030] The preparation method of low-temperature crosslinking emulsified SBS asphalt modifier, comprises the following steps:

[0031] 1) Material preparation: by weight, including: SBS45kg, crosslinking agent 0.6kg, stabilizer 0.6kg, cationic surfactant 3.2kg, nonionic surfactant 2.7kg, solvent 130kg, water 30kg. Among them, the crosslinking agent is tert-butyl hydroperoxide, the stabilizer is sodium carboxymethyl cellulose, the cationic surfactant is tetradecyl dimethyl benzyl ammonium chloride, and the nonionic surfactant is alkylphenol Polyoxyethylene ether and solvent are solvent gasoline.

[0032] 2) Prepare the sol: add the solvent into the reaction kettle at room temperature, then add the cross-linking agent and SBS particles respectively, stir at room temperature for 2 hours, and then take it out of the pot to make the SBS sol;

[0033] 3) Preparation of soap liquid: After mixing water and stabilizer, add cationic surfactant and nonionic surfactant at 70°C and mix, a...

Embodiment 3

[0041] The preparation method of low-temperature crosslinking emulsified SBS asphalt modifier, comprises the following steps:

[0042] 1) Material preparation: by weight, including: SBS 50kg, crosslinking agent 0.8kg, stabilizer 0.9kg, cationic surfactant 4.5kg, nonionic surfactant 3.5kg, solvent 145kg, water 35kg. Wherein, the crosslinking agent is dicumyl peroxide, the stabilizer is sodium carboxymethyl cellulose, the cationic surfactant is cetyl dimethyl benzyl ammonium chloride, and the nonionic surfactant is The ratio is 1:1 mixed fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether, and the solvent is dichloromethane.

[0043]2) Prepare the sol: add the solvent into the reaction kettle at room temperature, then add the crosslinking agent and SBS particles respectively, stir at room temperature for 3 hours, and then take it out of the pot to make the SBS sol;

[0044] 3) Preparation of soap liquid: After mixing water and stabilizer, add cationic surf...

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Abstract

The invention discloses a method for preparing a low-temperature cross-linked emulsified SBS pitch modifier. The method comprises the following steps: material preparation, sol preparation, liquid soap preparation, latex preparation, finished product preparation and the like. The low-temperature cross-linked emulsified SBS pitch modifier obtained according to the method has the advantages that the high-temperature flexibility and low-temperature fragility of pitch can be effectively improved; the softening point and low-temperature ductility of pitch can be improved.

Description

technical field [0001] The invention relates to the technical field of asphalt preparation, in particular to a method for preparing a low-temperature cross-linked emulsified SBS modified asphalt additive. Background technique [0002] Polymer SBS modifier, as one of the important raw materials in the modified asphalt industry, is widely used because its molecular structure has the characteristics of both plastic and rubber. It solves the defects of high temperature stickiness and low temperature brittleness of asphalt. At present, due to the diversity of SBS molecular segment combinations and different molecular weights, there are many types of SBS modified asphalts in the market, with different shapes. Defined by the chain segment structure after SBS polymerization, it can be roughly divided into linear SBS and star SBS. In order to better play the role of SBS modifier in asphalt, domestic research institutions and manufacturers focus on the research of SBS high-temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/03C08L53/02C08K5/14C08L95/00
Inventor 王勇进田海明李争周正发
Owner 安徽路达泰克沥青新材料有限公司
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