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Solidifying agent of epoxy resin for reinforcing and sealing, and method of preparing the same

A technology for epoxy resin curing and sealing, applied in the field of epoxy resin curing agent, can solve problems such as poor activity, affect construction, affect construction period, etc., and achieve the effect of avoiding the risk of high temperature and high pressure synthesis, simple production method and good construction.

Active Publication Date: 2009-02-18
湖北湖大资产经营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the epoxy resin curing agent in the room temperature curing system is modified according to the general method, the prepared adhesive is highly active above 30 °C, and it is easy to produce "sudden polymerization" phenomenon during the construction process, resulting in waste of the adhesive and directly affecting the construction; or The activity is very poor, it is not easy to cure in 24 hours, which affects the construction period

Method used

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  • Solidifying agent of epoxy resin for reinforcing and sealing, and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Building and bridge reinforcement adhesive ratio (weight ratio)

[0054] CYD128 (epoxy resin) 100

[0055] EPG660 (reactive diluent) 15

[0056] Fumed silica (thickener) 1~3

[0057] This curing agent 45

[0058] Filler (silica powder, calcium carbonate, etc.) 15~30

[0059] KH-550 (coupling agent) 1

[0060] DMP-30 (accelerator) 0.5~1.5

[0061] Pigment (toner) 0.5~2.0

[0062] (2) Preparation method

[0063] Weigh CYD128, EPG660 and fumed silica according to the formula, stir well, then add filler, KH-550, stir well, finally add this curing agent, DMP-30 and pigment, stir well and proceed to construction.

Embodiment 2

[0065] (1) Proportion of sealing adhesive (weight ratio)

[0066] CYD128 (epoxy resin) 50

[0067] E-44 (epoxy resin) 50

[0068] EPG660 (reactive diluent) 5

[0069] Fumed silica (thickener) 1~4

[0070] This curing agent 50

[0071] Filler (silica powder, calcium carbonate, etc.) 0~50

[0072] KH-550 (coupling agent) 1

[0073] DMP-30 (accelerator) 0.5~1.5

[0074] Pigment (toner) 0~2

[0075] (2) Preparation method

[0076] Weigh CYD128, E-44, EPG660, fumed silica according to the proportion, stir evenly, then add filler, KH-550, stir evenly, finally add this curing agent, DMP-30 and pigment, stir well and carry out sealing and bonding .

[0077] 3. Effect verification

[0078] According to the mechanical performance test (shown in the table below) of the building and bridge reinforcement adhesive prepared according to embodiment 1

[0079] Table Mechanical properties of construction and bridge reinforcement adhesives prepared with this curing agent

[0080]

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Abstract

The invention discloses an epoxy resin curing agent for reinforcing and sealing, and a preparation method thereof, relating to an epoxy resin curing agent. The product is an environment friendly epoxy resin curing agent which is suitable for high temperature construction environment. The curing agent consists ofcomprises the main ingredients with the following weight percent: 70 to 76 percent of 4, 4'-diaminodiphenyl methane and 24 to 30 percent of polyphenyl polyamino methane, and the accessory ingredients with the following weight percent: 45 to 55 percent of thinner, 1 to 10 percent of catalyst and 5 to 40 percent of diepoxide. The invention uses the normal-pressure reaction method carries outfor synthesis through using normal-pressure reaction method, which avoids dangers of high-temperature and high-pressure synthesis. The product is free of 'three wastes'. The synthesis rate is 100 percent. The product has no obvious irritating odor and belongs to environment friendly products. The curing agent can solve the working life of the high-temperature construction in reinforcing and sealing fields in time because the curing agent has the advantages of is characterized in mild curing, good construction and high strength. The curing agent widens the application range of building reinforcement, bridge reinforcement and sealing fields.

Description

technical field [0001] The invention relates to an epoxy resin curing agent, in particular to an epoxy resin curing agent for reinforcement and sealing and a preparation method thereof. The product is an environment-friendly epoxy resin curing agent suitable for high-temperature construction environments. Background technique [0002] The invention of epoxy resin has gone through a long historical period. In 1947, the Devoe-Raynolds Company of the United States produced epoxy resin with industrial production value for the first time. Soon the Swiss Ciba company, the American Shell company and the De Chemical company all started the industrial production and application development of epoxy resin. The development of epoxy resin in my country began in 1956, and it was first successful in Shenyang and Shanghai. Industrial production began in Shanghai in 1958. After more than 40 years of struggle, the production and application of epoxy resin in my country has developed rapid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/50
Inventor 胡高平
Owner 湖北湖大资产经营有限公司
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