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Road crack-filling adhesive suitable for wet-surface crack and preparation method thereof

A technology for seam filling and road, applied in the direction of adhesive, adhesive type, polyurea/polyurethane adhesive, etc., can solve the problems of damaged roadbed, poor bonding effect on wet surface, complicated process, etc., and achieve good tearing and tensile strength, increased adhesion, and strong hydrophobicity

Active Publication Date: 2015-12-23
南京威邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of asphalt and modified asphalt crack repair materials is complicated, requires slotting, and requires the crack surface to be dry, so only the upper part of the crack can be repaired, resulting in incomplete crack repair, and the crack may continue to develop and damage the roadbed
At the same time, this kind of joint filling material has low elongation, and it is easy to crack again under the action of thermal expansion and contraction
Traditional polyurethane joint potting adhesives are easy to foam when exposed to water, and the bonding effect on wet surfaces is poor
Epoxy resin caulking adhesive has good bonding performance, moderate viscosity, but low elongation, suitable for micro-crack treatment on concrete surface
To sum up, the current road joint glue only solves part of the problem of crack repair, and cannot meet the requirements of high bond strength and elongation for road wet surface cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of road grouting glue suitable for wet surface cracks is as follows:

[0037] Preparation of component A: Weigh 10 parts of amino-terminated polyoxypropylene ether, 20 parts of hydroxyl-terminated liquid polybutadiene rubber, and 59 parts of polyether polyol. Stir and vacuum dehydrate in the temperature range of 90℃~110℃ for 2~4h, then Add 3 parts of polyvinyl butyral, 2.5 parts of tetraethoxysilane, 1.5 parts of ethoxy-modified trisiloxane, 3,3'-dichloro-4,4'-diaminodiphenylmethane 1 Parts, 1 part of N,N-dihydroxy(diisopropyl)aniline, 1 part of pentamethyldiethylenetriamine, 1 part of dibutyltin dilaurate, stirring and vacuum dehydration for 1~2h, packaging for later use;

[0038] Preparation of component B: First, stir the polytetrahydrofuran ether glycol and polyethylene glycol at a temperature range of 90℃~110℃ for vacuum dehydration for 2~4h, then add polymethylene polyphenyl polyisocyanate, Isophorone diisocyanate is reacted at about 85°C to prepa...

Embodiment 2

[0042] A preparation method of road grouting glue suitable for wet surface cracks is as follows:

[0043] Preparation of component A: Weigh 13 parts of amino-terminated polyoxyethylene ether, 14 parts of hydroxyl-terminated liquid polybutadiene rubber, and 68 parts of polyether polyol. Stir and vacuum dehydrate in the temperature range of 90℃~110℃ for 2~4h, then Add 5 parts of polyvinyl butyral, 3 parts of tetraethoxysilane, 2 parts of ethoxy-modified trisiloxane, 3,3'-dichloro-4,4'-diaminodiphenylmethane 2 Parts, 1 part of 2-methylpentanediamine, 1 part of pentamethyldiethylenetriamine, 1 part of triethylenediamine, stirring and vacuum dehydration for 1~2h, packaging for later use;

[0044] Preparation of component B: First, stir the polytetrahydrofuran ether glycol and polyethylene glycol at a temperature range of 90℃~110℃ for vacuum dehydration for 2~4h, then cool to 50℃~60℃ and add diphenylmethane diisocyanate and isophor. The ketone diisocyanate is reacted at about 85°C to pr...

Embodiment 3

[0048] A preparation method of road grouting glue suitable for wet surface cracks is as follows:

[0049] Preparation of component A: weigh 15 parts of amino-terminated polyoxyethylene ether, 17 parts of hydroxyl-terminated liquid polybutadiene rubber, and 61 parts of polyether polyol. Stir and vacuum dehydrate in the temperature range of 90℃~110℃ for 2~4h, then Add 2 parts of polyvinyl butyral, 1 part of tetraethoxysilane, 1 part of ethoxy-modified trisiloxane, 1 part of 2-methylpentanediamine, N,N-dihydroxy (diisopropyl) Base) 1 part of aniline, 1 part of triethylenediamine, stirred and vacuum dehydrated for 1~2h, packaged for later use;

[0050] Preparation of component B: First, stir the polytetrahydrofuran ether glycol and polyethylene glycol at a temperature range of 90℃~110℃ for vacuum dehydration for 2~4h, then add polymethylene polyphenyl polyisocyanate, Diphenylmethane diisocyanate is reacted at about 85°C to prepare polyurethane prepolymer, and the NCO content is contro...

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Abstract

The invention discloses a road crack-filling adhesive suitable for a wet-surface crack and a preparation method thereof. The road crack-filling adhesive employs a double-composition crack-filling adhesive material, concretely, a composition A is formed by employing amino-terminated polyether, hydroxyl-terminated liquid polybutadiene rubber, polyvinyl butyral, polyether polyol, an interface processing agent, a chain extender and a catalyst; a composition B is a perpolymer prepared by reacting isocyanate with polytetramethylene ether glycol and polyethylene glycol, and the composition A and the composition B are mixed according to the mass ratio of 0.6-1:1 so as to use the crack-filling adhesive. The preparation method is simple. The disclosed road crack-filling adhesive overcomes the disadvantage that a conventional road crack-filling adhesive difficultly bonding wet surfaces. The disclosed road crack-filling adhesive is low in viscosity, can be injected to the crack bottom, is high in bonding strength, high in elongation percentage, simple in construction technology, and suitable for repairing various road cracks.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, in particular to a road joint glue suitable for wet surface cracks and a preparation method thereof. Background technique [0002] The pavement cracks of any road will be accompanied by the whole use period of the road, and directly affect the service life of the road and driving safety. If the pavement cracks are not treated in time, it is easy to cause structural damage to the pavement. At present, the commonly used crack repair materials mainly include asphalt, modified asphalt, polyurethane and epoxy resin. The use of asphalt and modified asphalt crack repair materials is complicated, requires grooves, and requires the crack surface to be dry, so only the upper part of the crack can be repaired, resulting in incomplete crack repair, and the crack may continue to develop and damage the subgrade. At the same time, this type of joint filling material has low elongation, and ...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J175/12C09J175/14C09J11/06C08G18/69C08G18/66C08G18/50C08G18/48C08G18/62C08G18/12
Inventor 杨政鹏张春静刘玄陈小砖管学茂
Owner 南京威邦新材料有限公司
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