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A kind of epoxy resin curing agent and preparation method thereof

An epoxy resin curing and solvent technology is applied in the epoxy resin curing agent and its preparation, and the epoxy resin curing agent with toughness and its preparation field can solve the problem of poor weather resistance, moisture absorption and impact resistance. Problems such as poor ability to apply external force, to achieve the effect of good curing performance, simple preparation process, and low product storage requirements

Active Publication Date: 2015-10-28
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its obvious brittleness and poor weather resistance, fatigue resistance, heat resistance, moisture absorption and impact resistance make it less able to withstand external forces under high stress, which is an unavoidable shortcoming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Product example:

[0044] An epoxy resin curing agent is characterized in that: comprising the following raw materials in parts by weight:

[0045] Dimethylaminoethyl methacrylate 30 parts

[0046] Methyl methacrylate 20 parts

[0047] 10 parts of isoamyl methacrylate

[0048] 10 parts of hydroxyethyl methacrylate

[0049] Initiator 0.5 parts

[0050] Solvent 50 parts.

Embodiment 2

[0052] Product example:

[0053] An epoxy resin curing agent is characterized in that: comprising the following raw materials in parts by weight:

[0054]Dimethylaminoethyl methacrylate 60 parts

[0055] 30 parts of methyl methacrylate

[0056] 20 parts of isoamyl methacrylate

[0057] 20 parts of hydroxyethyl methacrylate

[0058] Initiator 0.5-3 parts

[0059] 50-100 parts of solvent.

Embodiment 3

[0061] Product example:

[0062] An epoxy resin curing agent is characterized in that: comprising the following raw materials in parts by weight:

[0063] Dimethylaminoethyl methacrylate 45 parts

[0064] Methyl methacrylate 25 parts

[0065] 15 parts of isoamyl methacrylate

[0066] 15 parts of hydroxyethyl methacrylate

[0067] Initiator 1.75 parts

[0068] 75 parts of solvent.

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Abstract

The invention relates to an epoxy resin curing agent and a preparation method thereof, which comprises the following raw materials in parts by weight: 30-60 parts of dimethylaminoethyl methacrylate, 20-30 parts of methyl methacrylate, methyl methacrylate 10-20 parts of isoamyl acrylate, 10-20 parts of hydroxyethyl methacrylate, 0.5-3 parts of initiator, and 50-100 parts of solvent. The present invention adopts dimethylaminoethyl methacrylate with unsaturated bonds as the main comonomer, and directly inserts the tertiary amino group capable of cross-linking and curing reaction with epoxy resin into the polymer chain segment, so that it can be used in the ring Oxygen resin cures and plays the role of toughening modification at the same time, without adding curing agent and toughening agent at the same time, which saves cost and simplifies the process.

Description

technical field [0001] The invention relates to an epoxy resin curing agent and a preparation method thereof. Specifically, the invention relates to an epoxy resin curing agent with toughening performance and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Epoxy resin is a kind of thermosetting resin, which is widely used in adhesives, high-performance-light-weight fiber-reinforced composite materials, coatings and composite material substrates due to its excellent adhesion, mechanical strength and electrical insulation properties. In addition, epoxy resin adhesives are widely used in structural adhesives due to their good properties. However, its obvious brittleness and poor weather resistance, fatigue resistance, heat resistance, moisture absorption and impact resistance make it less able to withstand external forces under high stress, which is an unavoidable shortcoming. Therefore, it is necessary to toug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/14C08F220/18C08F220/28C08G59/50
Inventor 何琦
Owner CHINA BLUESTAR CHENGRAND CO LTD
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