Grouting type polymer binder crack repairing adhesive

A polymer adhesive and crack repair technology, applied in the direction of non-polymer adhesive additives, adhesives, carboxyl rubber adhesives, etc. Poor impact toughness, etc.

Active Publication Date: 2021-10-01
可慧(河南)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three repair methods can be used alone or at the same time. There are currently many product reports as crack repair materials, mainly focusing on the four resin systems of formazan material, acrylic material, epoxy resin, and polyurethane. Among them, epoxy Resin has good mechanical properties and bonding properties, but it is also found to be brittle, heat resistance, fatigue resistance and impact toughness are relatively poor during use, making it unfavorable for the repair of concrete cracks. Therefore, to provide a Grouting type polymer adhesive crack repair glue with good adhesion and strong mechanical properties is a technical problem that needs to be solved at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A grouting type polymer adhesive crack repair adhesive, comprising the following raw materials in parts by weight: 200 parts of epoxy resin, 100 parts of modified polyurethane, 10 parts of white carbon black, 30 parts of calcium sulfate whiskers, carboxyl-terminated liquid D 10 parts of nitrile rubber, 10 parts of modified bentonite, 2 parts of coupling agent, 1 part of defoamer, 5 parts of curing agent and 3 parts of curing accelerator;

[0029] The grouting type polymer adhesive crack repair glue is made by the following steps:

[0030]The first step is to add epoxy resin and modified polyurethane into the reaction kettle, control the reaction temperature at 100°C, and the rotation speed of 200r / min. After stirring for 30 minutes, add carboxyl-terminated liquid nitrile rubber and coupling agent into the reaction kettle. Keeping the temperature and rotation speed constant, react for 20 minutes to obtain the first mixture;

[0031] The second step, add white carbon bla...

Embodiment 2

[0041] A grouting type polymer adhesive crack repair glue, comprising the following raw materials in parts by weight: 250 parts of epoxy resin, 120 parts of modified polyurethane, 15 parts of white carbon black, 40 parts of calcium sulfate whiskers, carboxyl-terminated liquid D 15 parts of nitrile rubber, 12 parts of modified bentonite, 4 parts of coupling agent, 2 parts of defoamer, 6 parts of curing agent and 4 parts of curing accelerator;

[0042] The grouting type polymer adhesive crack repair glue is made by the following steps:

[0043] The first step is to add epoxy resin and modified polyurethane into the reaction kettle, control the reaction temperature at 110°C, and the rotation speed at 250r / min. After stirring for 30 minutes, add carboxyl-terminated liquid nitrile rubber and coupling agent into the reaction kettle. Keeping the temperature and rotation speed constant, react for 20 minutes to obtain the first mixture;

[0044] The second step, add white carbon black...

Embodiment 3

[0054] A grouting type polymer adhesive crack repair adhesive, comprising the following raw materials in parts by weight: 300 parts of epoxy resin, 150 parts of modified polyurethane, 20 parts of white carbon black, 50 parts of calcium sulfate whiskers, and carboxyl-terminated liquid D 20 parts of nitrile rubber, 15 parts of modified bentonite, 5 parts of coupling agent, 3 parts of defoamer, 10 parts of curing agent and 5 parts of curing accelerator;

[0055] The grouting type polymer adhesive crack repair glue is made by the following steps:

[0056] The first step is to add epoxy resin and modified polyurethane to the reaction kettle, control the reaction temperature at 120°C, and the rotation speed is 300r / min. After stirring for 30 minutes, add carboxyl-terminated liquid nitrile rubber and coupling agent to the reaction kettle. Keeping the temperature and rotation speed constant, react for 20 minutes to obtain the first mixture;

[0057] The second step, add white carbon ...

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PUM

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Abstract

The invention discloses a grouting type polymer binder crack repairing adhesive. The adhesive comprises the following raw materials in parts by weight: 200-300 parts of epoxy resin, 100-150 parts of modified polyurethane, 10-20 parts of white carbon black, 30-50 parts of calcium sulfate whiskers, 10-20 parts of carboxyl-terminated liquid nitrile rubber, 10-15 parts of modified bentonite, 2-5 parts of a coupling agent, 1-3 parts of a defoaming agent, 5-10 parts of a curing agent and 3-5 parts of a curing accelerator. The adhesive is prepared by taking epoxy resin as a main material and adding modified polyurethane, white carbon black, calcium sulfate whiskers, carboxyl-terminated liquid nitrile rubber, modified bentonite and other auxiliaries; the modified polyurethane, the white carbon black, the calcium sulfate whisker, the carboxyl-terminated liquid nitrile rubber and the modified bentonite are added, so that the problems of brittleness, easiness in cracking and poor toughness of the epoxy resin are solved, and the antibacterial property, the fatigue resistance and the aging resistance of the epoxy resin are also improved.

Description

technical field [0001] The invention belongs to the technical field of crack repair glue preparation, and in particular relates to a grouting type polymer adhesive crack repair glue. Background technique [0002] Due to the influence of the environmental conditions of the building or improper design, construction quality and other reasons, cracks in concrete are relatively common. Solving the problem of cracks is the key to determine whether the concrete structure can meet the needs of use and durability. Concrete cracks are the most common engineering disease, but most of the disease cracks can be repaired to restore the original function of the concrete structure. Cracks are a common phenomenon in concrete structures. The appearance of cracks will not only reduce the impermeability of buildings and affect the use of buildings, but also cause corrosion of steel bars and carbonization of concrete, reducing the durability of materials and affecting The bearing capacity of t...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09J163/00C09J175/08C09J113/00C09J11/04C08G18/10C08G18/48C08G18/64
CPCC09J163/00C09J11/04C08G18/10C08G18/4833C08G18/4081C08L2201/08C08G2170/00C08L75/08C08L13/00C08K7/26C08K7/08C08K9/04C08K3/346C08G18/6484Y02W30/91
Inventor吴苏州陈俊孚李晓云陈明惠
Owner可慧(河南)新材料科技有限公司