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A kind of epoxy resin composition and its preparation method and application

An epoxy resin, epoxy resin curing technology, applied in the field of resin materials, can solve the problems of long infiltration time, mechanical decline of composite materials, poor infiltration, etc., and achieve the effect of excellent mechanical properties and high mechanical properties

Active Publication Date: 2022-07-29
WELLS ADVANCED MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the viscosity of the epoxy resin composition is relatively high, and the resin with high viscosity has a longer infiltration time, resulting in low efficiency; the probability of poor infiltration is higher, resulting in a decrease in the mechanics of the composite material and an increase in the defective rate.

Method used

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  • A kind of epoxy resin composition and its preparation method and application
  • A kind of epoxy resin composition and its preparation method and application
  • A kind of epoxy resin composition and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This embodiment provides an epoxy resin curing composition, which is formed by mixing an epoxy resin composition with a mass ratio of 100:31 and a curing agent;

[0090] The epoxy resin composition comprises the following components according to parts by weight:

[0091]

[0092] The curing agent comprises the following components according to parts by weight:

[0093] Polyetheramine curing agent (Huntsman-230) 70 parts by weight

[0094] Alicyclic amine curing agent (diaminodicyclohexylmethane) 25 parts by weight

[0095] Tertiary amine accelerator (K54 of Air Chemicals) 5 parts by weight;

[0096]The preparation method of the epoxy resin composition is as follows: adding the formula amount of bisphenol A epoxy resin, bisphenol F epoxy resin, diluent and auxiliary agent to the stirring device, stirring (main stirring 60 r / min, high speed). stirring at 800 r / min), vacuum defoaming, and filtration to obtain the epoxy resin composition.

[0097] The preparation met...

Embodiment 2

[0099] The difference from Example 1 is that the bisphenol A epoxy resin is 60 parts by weight, the bisphenol F epoxy resin is 30 parts by weight, and the ratio of the two is 2:1.

Embodiment 3

[0101] The difference from Example 1 is that the bisphenol A epoxy resin is 60 parts by weight, the bisphenol F epoxy resin is 20 parts by weight, and the ratio of the two is 3:1.

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Abstract

The invention relates to an epoxy resin composition, a preparation method and application thereof. The epoxy resin composition includes bisphenol A epoxy resin and bisphenol F epoxy resin; the preparation method comprises the following steps: A epoxy resin and bisphenol F epoxy resin are added to the stirring device, stirred, vacuum defoamed, and filtered to obtain the epoxy resin composition; the epoxy resin composition is mixed with the curing agent to form epoxy resin curing composition, and used as a material for wind turbine blades. The epoxy resin composition provided by the invention can not only meet the low viscosity required by the preparation process of wind power generation blades with a length of ≥70 m, but also meet the mechanical properties required as a wind power generation blade material.

Description

technical field [0001] The present invention relates to the technical field of resin materials, in particular to an epoxy resin composition and a preparation method and application thereof. Background technique [0002] In the contradiction between balancing energy and the environment, it seems that wind power is the best solution. At present, the wind power industry in the field of new energy is developing rapidly. After 10 years of development, wind power has become a reliable force that provides renewable energy on a large scale. With the gradual saturation of onshore wind farms, offshore wind power generation has received increasing attention. The length of wind turbine blades has also grown from 40 meters (1.5 MW) 10 years ago to 70 to 80 meters (about 5 MW) now. The blade length of offshore wind energy is generally more than 70 meters, and will develop to more than 80 and 90 meters in the future. Because the length of the blade increases and the main manufacturing pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00
CPCC08L63/00C08L2205/025
Inventor 林燕建谭水平
Owner WELLS ADVANCED MATERIALS SHANGHAI