Modified asphalt adhesive and preparation method thereof

Abstract

The invention discloses a modified asphalt adhesive and a preparation method thereof. The preparation method comprises the following steps: pumping fused asphalt in a stirring kettle; starting a stirring paddle, wherein, the stirring speed is 60-200 revolutions / min, and the material temperature is 120-150 DEG C; stirring for 10-30min; adding styrene-butadiene block copolymer (SBS) and styrene butadiene rubber (SBR) and continuously stirring; heating to 160-180 DEG C; stirring for 1-2h; keeping the stirring temperature and the stirring speed; adding tackifier; continuously stirring for 30-60min; adding rubber powder and filler in sequence; continuously stirring for 30-60min; and grinding by a colloid mill to obtain the modified asphalt adhesive with good performance.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a modified asphalt adhesive with good adhesive performance, excellent high-temperature resistance and low-temperature resistance. Background technique [0002] With the vigorous development of national large-scale infrastructure construction and municipal engineering, waterproof engineering has become the top priority of these projects, and waterproof issues have attracted much attention. A variety of new waterproof materials emerge in endlessly. The performance of waterproof materials directly affects the success or failure of waterproof projects, and then affects the quality of use of the entire project. Therefore, users are very cautious in choosing waterproof materials during waterproof construction. With the higher and higher requirements for the quality of waterproofing projects, at the same time, the development potential of the field of waterproofing materials has also...

AI Technical Summary

Problems solved by technology

With the higher and higher requirements for the quality of waterproofing projects, at the same time, the development potential of the field of waterproofing materials has also been stimulated. The development of waterproofing materials has entered a vigorous and rapid development period. At present, the main waterproofing membranes on the market are divided into asphalt membranes. Classes, polymer modified asphalt-based waterproofing membranes and polymer waterproofing membranes, asphalt waterproofing membranes have gradually withdrawn from the market due to environmental protection issues; polymer modified asphalt waterproofing membranes are low cost, excellent It has become the mainstream of the market due to its excellent performance; the mechanical properties of polymer waterproof membrane are very good, but the cost is high, and it is difficult to popularize in the civilian market.

At present, all the bare board waterproof membranes are "raincoat-style" waterproof in waterproofing projects. The fatal shortcoming of this waterproof membrane is the problem of "water stringing", and the loopholes are not easy to find and repair; "Waterproof, the waterproof membrane and the base material are well bonded, and the problem of "water stringing" is completely solved. The surface of this waterproof membrane needs to be compounded with a layer of adhesive to achieve a comprehensive and good adhesion between the waterproof membrane and the base material and become the "skin" of the base material to achieve "skin-style" waterproof

At present, some adhesives have disadvantages such as high cost, poor adhesive performance, easy to "flow" at high temperature, and "brittle cracking" at low temperature, etc.

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