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High-performance pnenolic aldehyde amine hardener for epoxy resin and preparation thereof

A technology for phenalkamine curing agent and epoxy resin, which is applied in the field of high-performance phenalkamine curing agent for epoxy resin and its preparation, which can solve the problems of low strength, high brittleness of adhesive, and influence on construction and application, and achieve simple production method , avoid risks, and solve the effect of low intensity in the later stage

Inactive Publication Date: 2009-08-19
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 phenalkamine curing agent is modified according to the general method, the prepared adhesive is brittle and has low strength in the later stage, which affects the construction application in low temperature and humid environment

Method used

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  • High-performance pnenolic aldehyde amine hardener for epoxy resin and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Construction and bridge reinforcement adhesive components (percentage by weight)

[0050] CYD128 (epoxy resin) 100

[0051] EPG660 (reactive diluent) 15

[0052] Fumed silica (thickener) 1~3

[0053] This curing agent 35

[0054] Filler (silica powder, calcium carbonate, etc.) 15~30

[0055] KH-550 (coupling agent) 1

[0056] DMP-30 (accelerator) 0.5~1.5

[0057] Pigment (toner) 0.5~2.0

[0058] (2) Preparation method

[0059] 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

[0061] (1) Sealing adhesive components (percentage by weight)

[0062] CYD128 (epoxy resin) 50

[0063] E-44 (epoxy resin) 50

[0064] EPG660 (reactive diluent) 5

[0065] Fumed silica (thickener) 1~4

[0066] This curing agent 35

[0067] Filler (silica powder, calcium carbonate, etc.) 0~50

[0068] KH-550 (coupling agent) 1

[0069] DMP-30 (accelerator) 0.5~1.5

[0070] Pigment (toner) 0~2

[0071] (2) Preparation method

[0072] 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 .

[0073] 3. Effect verification

[0074] The mechanical property test (shown in table 1) of the construction and bridge reinforcement adhesive prepared according to embodiment 1

[0075] Table 1 The mechanical properties of repair glue prepared with this curing agent

[0076]Take the repair glue in GB50367-2006 Concrete Str...

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Abstract

The invention discloses a high-performance phenol-aldehyde amine curing agent used for epoxy resin and a preparation method thereof and relates to a phenol-aldehyde amine epoxy resin curing agent which is a low-viscosity epoxy resin curing agent applicable to low-temperature damp construction. The curing agent comprises the main components with the weight percentage as follows: 36-45 percent of phenol, 5-8 percent of long-chain phenol, 18-22 percent of formaldehyde solution, 20-25 percent of ethylene polyamine, 3.5-5.5 percent of 4, 4'-diminodiphenyl-methane and 1.5-2.5 percent of polyphenyl polyamine methane. The invention uses a form of normal pressure reaction, thereby avoiding the risk of high temperature and high pressure synthesis; the production method is simple; the curing agent has high activity, low viscosity, good construction and high intensity, so the curing agent can overcome the disadvantages that the epoxy resin is cured slowly under low temperature and has low intensity later. A cured product obtained by curing the epoxy resin with the curing agent overcomes the disadvantage of the brittleness of ordinary phenol-aldehyde amine. The phenol-aldehyde amine epoxy resin curing agent is applicable to the fields of building reinforcing, bridge reinforcing, sealing bonding, water conservancy project, antiseptic paint, etc.

Description

technical field [0001] The invention relates to an epoxy resin curing agent, in particular to a high-performance phenalkamine curing agent for epoxy resin and a preparation method thereof. The product is a low-viscosity epoxy resin curing agent suitable for low-temperature and humid construction. 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 rapidly, and t...

Claims

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Application Information

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IPC IPC(8): C08G59/50
Inventor 胡高平高杰
Owner 湖北湖大资产经营有限公司
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