SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage and preparation process thereof

A heat storage stable, modified asphalt technology, applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of high temperature stability of asphalt pavement, reduced high temperature performance of modified asphalt, can not meet the technical requirements and other problems, to achieve Improve the softening point, reduce the penetration, and reduce the effect of adding SBS

CN102585525AInactive Publication Date: 2012-07-18SHANDONG HERITAGE HIGHWAY MATERIALS TECH

1 Cites 43 Cited by

Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: SHANDONG HERITAGE HIGHWAY MATERIALS TECH
Publication Date: 2012-07-18
Estimated Expiration: Not applicable · inactive patent

Smart Images

Figure 1

Patent Text Reader

Abstract

The invention discloses an SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage, which has significantly improved thermal storage stability and has good high-temperature and low-temperature road performance. The SBS modified asphalt is prepared by the step of adding a styrene-butadiene-styrene block copolymer, a stabilizer, a solubilizer and polyphosphate into base asphalt, wherein the weight of the styrene-butadiene-styrene block copolymer is 2-6% of the weight of the base asphalt, the weight of the stabilizer is 0.1-0.2% of the weight of the base asphalt, the weight of the solubilizer is 1-5% of the weight of the base asphalt, and the weight of polyphosphate is 0.1-1% of the weight of the base asphalt. The preparation process of the SBS modified asphalt comprises the following steps: (1) collecting base asphalt, and heating to 175-185 DEG C; (2) adding aromatic oil, and stirring for 40-80 seconds; (3) adding styrene-butadiene-styrene block copolymer, and shearing for 8-12 minutes; (4) adding sulfur powder, and shearing for 8-12 minutes; and (5) adding polyphosphate, and developing under stirring for 100-140 minutes to obtain the SBS modified asphalt with stable thermal storage.

Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a heat-storage-stable SBS modified asphalt and a preparation process thereof. Background technique

[0002] SBS modified asphalt has become the main variety of modified asphalt in my country because of its good high and low temperature performance, and can improve the anti-aging performance and fatigue resistance of asphalt. However, there are large differences between SBS modifier and asphalt in terms of molecular weight, density and other physical and chemical properties, resulting in poor compatibility between the two. Segregation and stratification often occur during thermal storage of SBS modified asphalt phenomenon, affecting the quality and normal use of modified asphalt.

[0003] The storage stability of SBS modified asphalt can be improved by adding stabilizers, such as sulfur and its compounds, which mainly act as cross-linking agents to make SBS cross-link and form a spatial network structure. However, although the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More