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Polyurethane raw material composite for repairing expressway and using method thereof

A raw material composition, a technology for expressways, applied in the field of polyurethane raw material composition for expressway repair, can solve the problems of high viscosity, high toxicity, incompetent mechanical strength, etc. production effect

Active Publication Date: 2017-05-31
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problems in the prior art that the viscosity of polyurethane grouting materials is too high, the toxicity is high, and the mechanical strength cannot meet the strength requirements for highways, and a polyurethane raw material composition for highway repair and its use method are provided

Method used

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  • Polyurethane raw material composite for repairing expressway and using method thereof
  • Polyurethane raw material composite for repairing expressway and using method thereof
  • Polyurethane raw material composite for repairing expressway and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Table 1 A component raw material composition table in Example 1

[0030]

[0031] Pour the raw materials of component A into the container according to the ratio specified in Table 1, and use an electric mixer to mix evenly to obtain component A; use PM200 for component B; then mix component A and component B according to the weight ratio of 1:1.2 Pour the ratio into a container, then stir with an electric mixer for 8 seconds, pour the evenly mixed liquid into an open container at room temperature, and place it for 24 hours before performing a performance test to obtain a polyurethane material for highway repair.

Embodiment 2

[0033]Table 2 A component raw material composition table in Example 2

[0034]

[0035] Pour the raw materials of component A into the container according to the ratio specified in Table 2, and use an electric mixer to mix evenly to obtain component A; use PM400 for component B; then mix component A and component B according to the weight ratio of 1:1.15 Pour the ratio into a container, then stir with an electric mixer for 8 seconds, pour the evenly mixed liquid into an open container at room temperature, and place it for 24 hours before performing a performance test to obtain a polyurethane material for highway repair.

Embodiment 3

[0037] Table 3 A component raw material composition table in embodiment 3

[0038]

[0039] Pour the raw materials of component A into the container according to the ratio specified in Table 3, and use an electric mixer to mix evenly to obtain component A; use M20S for component B; then mix components A and B according to the weight ratio of 1:1.13 Pour the ratio into a container, then stir with an electric mixer for 8 seconds, pour the evenly mixed liquid into an open container at room temperature, and place it for 24 hours before performing a performance test to obtain a polyurethane material for highway repair.

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Abstract

The invention discloses a polyurethane raw material composite for repairing an expressway and a using method thereof. The polyurethane raw material composite comprises a component A and a component B; the component A comprises polyether polyol, a cross-linking agent, a surfactant, a catalyst and a liquid flame retardant; the component B is polymethylene polyphenyl isocyanate. The polyurethane composite for repairing the expressway disclosed by the invention is low in component viscosity and easy to operate and construct, does not contain an organic volatile solvent and other volatile harmful substances, and does not have toxicity or harm to a human body; the performance of a polyurethane material product for repairing the expressway is higher than that of the existing concrete; the bending resistance and the impact resistance are higher; in addition, the raw materials of the polyurethane raw material composite are all commercially available products, are wide in sources and simple in using method, and facilitate large-scale production.

Description

technical field [0001] The invention relates to a polyurethane raw material composition for expressway restoration and a use method thereof. Background technique [0002] my country's expressways started in the late 1980s and experienced rapid development around 2000. By the end of 2013, the total mileage of my country's expressways had exceeded 100,000 kilometers. Due to reasons such as long service life, long-term heavy bearing capacity, inadequate maintenance, and natural disasters, some roads will have problems such as cracking, faults, falling off, and settlement on the road surface, and they need to be repaired in time before they can be used normally. [0003] When maintaining expressways, original materials such as asphalt and cement concrete can be used for repair, and polymer materials such as epoxy resin and polyurethane can also be used for reinforcement. Asphalt, cement concrete and other materials have high viscosity due to their own characteristics, and canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/22C08G18/20C08G18/18C08K5/521
CPCC08G18/163C08G18/18C08G18/2018C08G18/227C08G18/3206C08G18/4816C08G18/4825C08G18/4829C08G18/6677C08G18/7664C08K5/521
Inventor 于楠王青林李攀王伟
Owner SHANGHAI DONGDA POLYURETHANE
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