Normal temperature cured flexible epoxy composition for thin layer paving of road and bridge surfaces and preparation method of composition

A room temperature curing, flexible epoxy technology, applied in the field of polymer materials, can solve the problems of inability to meet the requirements of polymer thin layer paving, low mechanical properties, low shrinkage, water resistance, insufficient driving comfort, etc., to achieve excellent wettability and Adhesive properties, improved flexibility and weather resistance, high chemical reactivity effect

Inactive Publication Date: 2015-11-04
WUHAN SHANHU COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin has excellent mechanical properties, extremely low shrinkage and good water resistance, and is widely used in the fields of adhesives, floor coatings and castables. However, ordinary epoxy systems often have excess hardness and insufficient toughness, so they are directly used in The thin pavement structure has poor impact resistance, is prone to brittle cracking, is not resistant to fatigue, and has insufficient driving comfort, which cannot meet the requirements of polymer thin layer pavement

Method used

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  • Normal temperature cured flexible epoxy composition for thin layer paving of road and bridge surfaces and preparation method of composition

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preparation example Construction

[0023] The invention provides a room-temperature-curable flexible epoxy composition for road and bridge deck thin-layer pavement, which is formed by mixing component A and component B according to the mass ratio (1-2): The number of parts includes 10-100 parts of flexible epoxy resin, 0-80 parts of standard epoxy resin, 2-10 parts of diluent and 5-10 parts of a curing accelerator; the B component includes modified 40-100 parts of permanent alicyclic amine curing agent, 10-70 parts of toughening modifier, 1-10 parts of b curing accelerator, 1-3 parts of coupling agent and 0.1-1 part of defoaming agent. The preparation method of the room-temperature-curable flexible epoxy composition for road and bridge deck thin-layer pavement includes the following steps: Step 1: Take 10-100 parts of soft epoxy resin according to the mass parts of corresponding raw materials, standard epoxy resin 0 to 80 parts, 2 to 10 parts of diluent, 5 to 10 parts of a curing accelerator, add to the mixing ...

Embodiment 1

[0034] Embodiment 1, the preparation method of room temperature curing flexible epoxy composition for road and bridge deck thin layer pavement, it comprises the steps:

[0035] 1) Mix 70 parts of flexible epoxy resin, 20 parts of standard epoxy resin, 5 parts of diluent, and 5 parts of a curing accelerator according to the mass ratio, and mix them uniformly at room temperature to obtain component A.

[0036] The flexible epoxy resin is a prepolymer of polyurethane modified epoxy resin UE-121, bisphenol A epoxy resin E-51 and castor oil triglycidyl ether. The preparation method of flexible epoxy resin is as follows: Weigh 60 parts of bisphenol A epoxy resin E-51, 30 parts of polyurethane modified epoxy resin UE-121, and 10 parts of castor oil triglycidyl ether according to the mass parts of the corresponding raw materials. Parts, sequentially added to the mixing tank and heated to 40 ℃ mechanically stirred for 20 to 30 minutes to obtain a flexible epoxy resin. The polyurethane...

Embodiment 2

[0046] Embodiment 2, the preparation method of room temperature curing flexible epoxy composition for road and bridge deck thin layer pavement, it comprises the steps:

[0047] 1) Mix 50 parts of standard epoxy resin, 40 parts of flexible epoxy resin, 5 parts of diluent, and 5 parts of a curing accelerator according to the mass ratio, and mechanically stir and mix at room temperature to obtain component A.

[0048] The standard epoxy resin is CYD-128 bisphenol A epoxy resin, which has low viscosity and high epoxy value, and is suitable for solvent-free coatings, adhesives, floor coatings and other fields.

[0049] The flexible epoxy resin is a prepolymer of polyurethane modified epoxy resin UE-121, bisphenol A epoxy resin CYD-128 and castor oil triglycidyl ether. The preparation method of flexible epoxy resin is as follows: Weigh 35 parts of bisphenol A epoxy resin CYD-128, 50 parts of polyurethane modified epoxy resin UE-121, and 15 parts of castor oil triglycidyl ether accor...

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Abstract

The invention relates to a normal temperature cured flexible epoxy composition for thin layer paving of road and bridge surfaces. The composition is prepared from a component A and a component B in a mass ratio of (1-2): 1. The component A comprises 10-100 parts by mass of flexible epoxy resin, 0-80 parts by mass of standard epoxy resin, 2-10 parts of a diluent and 5-10 parts by mass of a curing accelerant a; the component B comprises 40-100 parts by mass of a modified amine curing agent, 10-70 parts by mass of a toughening modifier, 1-10 parts by mass of a curing accelerant b, 1-3 parts of a coupling agent and 0.1-1 part of a defoamer. The invention further relates to a preparation method for the normal temperature cured flexible epoxy composition for thin layer paving of road and bridge surfaces. The normal temperature cured flexible epoxy composition for thin layer paving of road and bridge surfaces provided by the invention has the benefits of being good in flexibility, high in ductility, curable at normal temperature, convenient to construct, low in cost and the like.

Description

technical field [0001] The invention relates to a room-temperature-curable flexible epoxy composition for road and bridge deck thin-layer pavement and a preparation method thereof, which is suitable for rapid repair of thin-layer pavement of steel bridge decks, concrete bridge decks, expressways and urban roads, and old asphalt pavement , belongs to the technical field of polymer materials. Background technique [0002] With the development of social economy and science and technology, the construction of roads and bridges is in full swing. Today, a criss-crossing road traffic network extending in all directions has been formed. Expressways, long-span bridges, urban viaducts, and high-grade highways can be seen everywhere. Most road pavement and bridge deck structures are generally asphalt pavement and cement concrete pavement: asphalt pavement is a flexible pavement, which has a smooth surface, safe and comfortable driving, no dust, low noise, and good water resistance, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L81/04C08K5/544C08G59/50
Inventor 徐楚沅
Owner WUHAN SHANHU COATINGS CO LTD
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