SBS (styrene butadiene styrene) asphalt modifier

A technology of asphalt modifier and parts by weight, applied in the field of SBS asphalt modifier, can solve the problems of poor flexibility and low heat resistance of SBS modified asphalt, and achieve improved performance, high compressive strength and bending strength. high effect

Inactive Publication Date: 2017-03-15
SUZHOU YUXI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the technical problems of poor flexibility and low heat resistance of the existing SBS modified asphalt, and provides a SBS asphalt modifier

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of SBS asphalt modifier, weighed according to the proportion of parts by weight: 100 parts of SBS; 25 parts of chloroprene rubber; 4 parts of polyvinyl alcohol; 10 parts of stearic acid; 0.3 parts of sodium hydroxide; dibutyl phthalate 1 part of ester; 0.2 part of sodium chloride; 10 parts of zinc oxide; 0.1 part of tetramethylthiuram disulfide; 4 parts of light magnesium oxide; 1 part of dioctyl phthalate; 5 parts of waste cooking oil . Put the above raw materials into a grinder, raise the temperature to 180°C, shear and grind to mix evenly, extrude and granulate through a twin-screw extruder, and cut into granules through a pelletizer to obtain an asphalt modifier.

[0019] The asphalt modifier prepared above is used as a raw material, and in parts by weight, 100 parts of base asphalt and 30 parts of asphalt modifier are used to obtain modified asphalt.

[0020] The prepared modified asphalt products The prepared modified asphalt has good flexibility, no crack...

Embodiment 2

[0022] A kind of SBS asphalt modifier, weighed according to the weight ratio: 100 parts of SBS; 45 parts of chloroprene rubber; 8 parts of polyvinyl alcohol; 30 parts of stearic acid; 0.7 parts of sodium hydroxide; dibutyl phthalate 5 parts of ester; 0.8 parts of sodium chloride; 20 parts of zinc oxide; 0.5 parts of tetramethylthiuram disulfide; 8 parts of light magnesium oxide; 5 parts of dioctyl phthalate.

[0023] Put the above raw materials into a grinder, raise the temperature to 180°C, shear and grind to mix evenly, extrude and granulate through a twin-screw extruder, and cut into granules through a pelletizer to obtain an asphalt modifier.

[0024] The asphalt modifier prepared above is used as a raw material, and in parts by weight, 100 parts of base asphalt and 30 parts of asphalt modifier are used to obtain modified asphalt.

[0025] The prepared modified asphalt products have good flexibility, no cracks and breaks, and cohesiveness of 0.7MPa; high temperature resist...

Embodiment 3

[0027] A kind of SBS asphalt modifier, weighed according to the weight ratio: 100 parts of SBS; 30 parts of chloroprene rubber; 5 parts of polyvinyl alcohol; 15 parts of stearic acid; 0.4 parts of sodium hydroxide; dibutyl phthalate 2 parts of ester; 0.4 parts of sodium chloride; 15 parts of zinc oxide; 0.2 parts of tetramethylthiuram disulfide; 5 parts of light magnesium oxide; 2 parts of dioctyl phthalate.

[0028] Put the above raw materials into a grinder, raise the temperature to 180°C, shear and grind to mix evenly, extrude and granulate through a twin-screw extruder, and cut into granules through a pelletizer to obtain an asphalt modifier.

[0029] The asphalt modifier prepared above is used as a raw material, and in parts by weight, 100 parts of base asphalt and 30 parts of asphalt modifier are used to obtain modified asphalt.

[0030] The prepared modified asphalt product has good flexibility, no cracks and breaks, and cohesiveness of 0.8MPa; high temperature resistan...

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PUM

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Abstract

The invention belongs to the field of asphalt materials, and particularly relates to a SBS (styrene butadiene styrene) asphalt modifier which comprises, by weight, 100 parts of SBS, 25-45 parts of chloroprene rubber, 4-8 parts of polyvinyl alcohol, 10-30 parts of stearic acid, 0.3-0.7 part of sodium hydroxide, 1-5 parts of dibutyl phthalate, 0.2-0.8 parts of sodium chloride, 10-20 parts of zinc oxide, 0.1-0.5 part of tetramethyl thiuram disulfide, 4-8 parts of light magnesium oxide, 1-5 parts of dioctyl phthalate and 5-10 parts of waste cooking oil. By the aid of the SBS asphalt modifier, base asphalt is good in toughness free from crack and breakage, caking property is 0.6-1MPa, the base asphalt endures high temperature ranging from 90 DEG C to 100 DEG C, flowing, foaming and sliding are omitted when the base asphalt is at the temperature of 100 DEG C for 5 h, impermeability is 0.1-0.2MPa, the base asphalt cannot be permeable for 30-60min, solid content is 52-58%, asphalt products are high in bending strength and compressive strength, and cobwebbing, cracking and tearing are omitted when the asphalt products are at the temperature of -10 DEG C.

Description

technical field [0001] The invention belongs to the field of asphalt materials, in particular to an SBS asphalt modifier. Background technique [0002] Asphalt modifier is a natural or synthetic organic or inorganic material added to asphalt or asphalt mixture, which can be melted or dispersed in asphalt to improve or enhance the road performance of asphalt. For example, in order to improve the mechanical properties (strength and toughness, etc.) of asphalt, materials such as polymers, resins, plastics, carbon black, and inorganic salts are added to increase strength and toughness. [0003] Commonly used asphalt modifiers include SBS, EVA, PE, etc. However, these modifiers are usually not supplied solely for asphalt pavement projects, but are prefabricated by modified asphalt manufacturers as the application channel. SBS modified asphalt is based on base asphalt, and a certain proportion of SBS modifier is added to make SBS evenly dispersed in the asphalt by shearing, stir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L11/00C08L29/04C08K13/02C08K5/09C08K5/12C08K3/22
CPCC08L53/02C08K2201/014C08L95/00C08L2205/035C08L11/00C08L29/04C08K13/02C08K5/09C08K5/12C08K2003/2296C08K2003/222
Inventor 杨阳
Owner SUZHOU YUXI NEW MATERIAL TECH
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