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Flexible epoxy adhesive and application

An epoxy adhesive, flexible epoxy technology, applied in the direction of adhesives, epoxy resin glue, adhesive types, etc., can solve the problems of poor low temperature resistance, poor aging resistance, etc., and achieve excellent durability, high road comfort, and good adaptability

Inactive Publication Date: 2013-03-06
湖南固特邦土木技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is more common to use epoxy-terminated polyurethane and amino-terminated polyurethane to modify epoxy resin. These two modification methods make the cured epoxy resin have disadvantages such as poor low temperature resistance and poor aging resistance.

Method used

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  • Flexible epoxy adhesive and application
  • Flexible epoxy adhesive and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of acrylate group-terminated polyurethane: heat up 800g polyethylene glycol (PEG) to 105°C for dehydration for 1 hour, cool to room temperature, add 100g toluene diisocyanate (TDI), 100g hexamethylene diisocyanate (HDI) to heat up React at 85° C. for 2.5 hours, then add 38 grams of hydroxyethyl acrylate (HEA) to continue the reaction, and monitor the reaction by infrared spectroscopy until the reaction is complete, thus obtaining the target product. The product viscosity is 30000mpa.s (25°C) (rotational viscometer test).

[0036] Preparation of modified curing agent: Add 400g of phenol, 500g of nonylphenol, 450g of formaldehyde, 800g of D230, and 800g of D400 into the reaction vessel, raise the temperature to 115°C for 2 hours, and then distill off small molecular substances to obtain the target product.

[0037] Component A is obtained by mixing and stirring the following components in parts by mass: E51100, acrylate group-terminated polyurethane 42, benzyl...

Embodiment 2

[0041] Preparation of acrylate group-terminated polyurethane: 500g polyethylene glycol (PEG) and 500g polypropylene glycol (PPG) were heated to 105°C for dehydration for 1h, cooled to room temperature, 70g toluene diisocyanate (TDI), 90g hexamethylene Base diisocyanate (HDI), 60g isophorone diisocyanate IPDI is warmed up to 85 ℃ and reacts for 2.5 hours, then adds 20 grams of hydroxyethyl acrylate (HEA), 25 grams of hydroxypropyl acrylate (HPA) to continue the reaction, by infrared spectroscopy The reaction is monitored until it is complete and the target product is obtained. The viscosity is 35000mpa.s (25°C) (rotational viscometer test).

[0042] Preparation of modified curing agent: Add 600g of phenol, 300g of nonylphenol, 550g of formaldehyde, 1000g of D230, and 700g of D400 into the reaction vessel, raise the temperature to 115°C for 2 hours, and then distill off small molecular substances to obtain the target product.

[0043] Component A is obtained by mixing and stirr...

Embodiment 3

[0047]Preparation of acrylate group-terminated polyurethane: 300g of polyethylene glycol PEG, 700g of polypropylene glycol PPG, and 200g of polytetrahydrofuran glycol PTMEG were heated to 100°C for dehydration for 1 hour, cooled to room temperature, and 100g of diphenylmethane diisocyanate MDI, 80g xylylene diisocyanate XDI, 50g hexamethylene diisocyanate (HDI) heated to 85 ℃ for 2.5 hours, then added 15g hydroxyethyl acrylate HEA, 20g hydroxypropyl acrylate HPA, 15g hydroxybutyl acrylate HBA The reaction was continued, and the reaction was monitored by infrared spectroscopy until the reaction was complete, so that the target product was obtained. The viscosity is 37000mpa.s (25°C) (rotational viscometer test).

[0048] Preparation of modified curing agent: Add 300g of phenol, 700g of nonylphenol, 450g of formaldehyde, 600g of D230, and 1200g of D400 into the reaction vessel, raise the temperature to 115°C for 2 hours, and then distill off small molecular substances to obtain ...

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Abstract

A flexible epoxy adhesive and application thereof are disclosed, wherein the flexible epoxy adhesive comprises a component A and a component B; the component A is composed of the following components according to part by weight: 100 parts by weight of epoxy resin, 30-50 parts by weight of polyurethane blocked by acrylate groups, 15-20 parts by weight of diluting agent and 1-2 parts of coupling agent; and the component B is composed of the following components according to part by weight: 100 parts by weight of modifying curing agent, 1-2 parts by weight of accelerator and 0.1-0.5 parts by weight of defoamer, and wherein the weight ratio of the component A to the component B is 2: 0.8-1.2. In addition, the invention also relates to the application of the epoxy adhesive as an adhesive for a road surface coating. The flexible epoxy adhesive of the invention not only keeps good mechanical properties of the epoxy resin, but also has excellent properties as quick curability at normal temperature, excellent ageing resistance, low temperature resistance, good flexibility, high elongation at break and the like. Besides, the road surface coating formed from the flexible epoxy adhesive and abrasive aggregates is anti-skid and wearable, high in road surface comfort, excellent in durability, economic and environment-friendly, etc.

Description

technical field [0001] The invention relates to a flexible epoxy adhesive and its application, more specifically, to a flexible epoxy adhesive and its application in pavement coating, and belongs to the technical field of polymer materials. Background technique [0002] With the rapid development of my country's social economy, the construction of roads is also very amazing. Expressways and high-grade highways can be seen everywhere, and a transportation network extending in all directions has been formed. There are two structural forms of high-grade pavement: cement concrete pavement and asphalt pavement. Cement concrete pavement has the advantages of high strength, high rigidity, easy construction, and long service life, but has the disadvantages of rapid attenuation of the anti-skid effect of grooves, poor driving comfort, and high noise. The main advantages of asphalt pavement are comfortable and safe driving, low noise, and no dust. However, asphalt pavement has disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/02C09J175/16C09J11/08
Inventor 彭勃单远铭黄燎田甜
Owner 湖南固特邦土木技术发展有限公司
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