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Asphalt-based crack pouring adhesive and preparation method thereof

A joint-filling glue and asphalt-based technology, which is applied in the field of joint-filling glue, can solve the problems of poor low-temperature performance of asphalt joint-filling glue, and achieve the effects of reducing flow performance, improving low-temperature resistance, and not easy to absorb water.

Active Publication Date: 2021-03-26
BENGBU SIFANG ASPHALT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an asphalt-based joint-filling adhesive and its preparation method, which overcomes the problem of poor low-temperature performance of the asphalt-based joint-filling adhesive in the prior art

Method used

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  • Asphalt-based crack pouring adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 20kg of gelatin in 30kg of an aqueous solution containing 30wt% propylene glycol, then add 6kg of alkyd resin and heat to 85°C, then add 0.7kg of catalyst dibutyltin dilaurate, react for 3 hours, filter, and dry to obtain modified gelatin.

[0019] Then, heat 80kg of No. 70 petroleum asphalt to 180°C in a high-speed shearing machine, then add 4kg of modified gelatin and 8kg of rubber powder and cut for 35min, then add 1kg of 1,2,3,4-butanetetraol and 2kg of terephthalate Continue to shear the mixture of bishydroxyethyl formate for 10 minutes, cool down to room temperature, and keep it sealed to obtain asphalt-based joint glue.

Embodiment 2

[0021] Dissolve 24kg of gelatin in 30kg of an aqueous solution containing 32wt% propylene glycol, then add 5kg of alkyd resin and heat to 90°C, then add 0.5kg of catalyst dibutyltin dilaurate, react for 2.5 hours, filter, and dry to obtain modified gelatin.

[0022] Then, heat 100kg of No. 90 petroleum asphalt to 190°C in a high-speed shearing machine, then add 5kg of modified gelatin and 10kg of rubber powder and cut for 30min, then add 1kg of 1,2,3,4-butanetrol and 1.8kg of para The mixture of bishydroxyethyl phthalate continued to be sheared for 10 minutes, cooled down to room temperature, sealed and stored to obtain asphalt-based joint glue.

Embodiment 3

[0024] Dissolve 26kg of gelatin in 30kg of an aqueous solution containing 35wt% propylene glycol, then add 5kg of alkyd resin and heat to 80°C, then add 0.6kg of catalyst dibutyltin dilaurate, react for 3 hours, filter, and dry to obtain modified gelatin.

[0025] Then, heat 90kg of No. 80 petroleum asphalt to 190°C in a high-speed shearing machine, then add 3kg of modified gelatin and 10kg of rubber powder and cut for 30min, then add 1kg of 1,2,3,4-butanetetraol and 2kg of terephthalate Continue to shear the mixture of bishydroxyethyl formate for 10 minutes, cool down to room temperature, and keep it sealed to obtain asphalt-based joint glue.

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Abstract

The invention discloses an asphalt-based crack pouring adhesive and a preparation method thereof. The preparation method comprises the following steps: heating petroleum asphalt to 170-190 DEG C in ahigh-speed shearing machine, adding modified gelatin and rubber powder, shearing for 30-35 minutes, adding a stabilizer, continuously shearing for 5-10 minutes, cooling, cooling to room temperature, and hermetically storing to obtain the asphalt-based crack pouring adhesive. According to the invention, the disadvantages in the prior art are overcome; and the asphalt-based crack pouring adhesive isgood in low-temperature resistance, high in elasticity, not prone to breakage and good in durability.

Description

technical field [0001] The invention relates to the technical field of joint-filling glue, in particular to an asphalt-based joint-filling glue and a preparation method thereof. Background technique [0002] Traditional road joint filling asphalt materials are mostly based on base asphalt, and later gradually evolved into emulsified asphalt. Although emulsified asphalt is better than ordinary asphalt in filling joints, both ordinary asphalt and emulsified asphalt can only achieve a certain filling effect in a short period of time. This is because ordinary asphalt is hard and brittle in winter. The ductility is poor. If ordinary asphalt is used to repair road cracks in summer, when the width of the crack increases in winter, the deformation of ordinary asphalt is very small, so that it is separated from one side of the crack or brittlely cracked directly from the middle of the material, and the sealing and waterproofing cannot be achieved. Purpose. Therefore, it is necessar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J11/08C09J11/06
CPCC09J195/00C09J11/08C09J11/06C08L2205/035C08L89/00C08L67/08C08L21/00C08K5/053C08K5/12Y02A30/30
Inventor 张金保
Owner BENGBU SIFANG ASPHALT
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