Vacuum infusion epoxy resin system and preparation method and application thereof

An epoxy resin, vacuum infusion technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, wind power generation, etc., can solve the problems of composite material defects, short operation time, fast curing speed of epoxy resin, etc., to achieve low price , to achieve the effect of reuse and reduce the cost of three waste treatment

Active Publication Date: 2022-07-12
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When producing these composite material blades over 30 meters long, the vacuum infusion resin system is required to have the characteristics of medium viscosity, long operating time, and high curing strength. At present, common infusion resin systems on the market often encounter in production. Problems of composite defects caused by fast curing speed and short operation time of epoxy resin

Method used

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  • Vacuum infusion epoxy resin system and preparation method and application thereof
  • Vacuum infusion epoxy resin system and preparation method and application thereof
  • Vacuum infusion epoxy resin system and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A vacuum infusion epoxy resin system for wind power blades, which includes A component and B component, and the A component includes by weight: 70% of bisphenol A epoxy resin; epoxy diluent I (multiple Epoxy tar) 30%, epoxy thinner II 0%,;

[0041] The B component comprises by weight percentage: polyetheramine curing agent 50%, isophorone diamine 50%;

[0042] The A component and the B component are mixed in a ratio of 100:25 by weight.

[0043] Wherein, the preparation method of the system is:

[0044] Step 1, prepare A component:

[0045] Put bisphenol A epoxy resin, epoxy diluent I and epoxy diluent II into the reaction kettle; heat the reaction kettle to 60 ° C and stop after stirring at 100 rpm for 30 minutes; stop heating and cool to normal temperature to obtain the result. said A component;

[0046] Step 2, prepare B component:

[0047] Add polyetheramine curing agent and isophorone diamine in the reaction kettle, and stop after stirring at 100rpm for 30 min...

Embodiment 2～7 and comparative example 1

[0050] The preparation methods of Examples 2 to 7 and Comparative Example 1 are the same as those of Example 1, and will not be repeated here. The difference lies in the proportioning composition. The proportioning composition of the vacuum infusion epoxy resin system of each embodiment is shown in the following table:

[0051]

[0052]

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PUM

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Abstract

The invention provides a vacuum infusion epoxy resin system and a preparation method and application thereof. The vacuum infusion epoxy resin system of the present invention uses epoxy diluent raw materials including polyepoxy tar containing cyclododecane structure, and can obtain A vacuum infusion epoxy resin system with above-moderate initial mix viscosity, low midpoint peak exotherm temperature and long workability time. The present invention provides a vacuum infusion epoxy resin system, the epoxy resin system is prepared by mixing A component and B component, wherein the A component includes bisphenol A epoxy resin and epoxy diluent, The B component includes a polyetheramine curing agent and an alicyclic amine; the epoxy diluent includes a polyepoxy tar containing a cyclododecane structure, and optionally other epoxy diluents.

Description

technical field [0001] The invention relates to a vacuum-infused epoxy resin formulation for wind power blades, and more particularly relates to a vacuum-infused epoxy resin system for wind power blades, which has better infusion, ultra-long operating time, high curing strength and temperature resistance. Background technique [0002] During the industrial production of 1,2-epoxy-5,9-cyclododecadiene (ECDD), the main by-product is the diepoxide ( DECD), triepoxy (DECD) heavy component tar, taking 10,000 tons of ECDD plant as an example, the production of polyepoxy tar waste is ~ 2000t / a (that is, ton / year), and special equipment is required in the normal production process. Incinerator incineration treatment. If the epoxy tar can be effectively used comprehensively, it can not only reduce the production cost of ECDD and the pressure of three-waste treatment, but also develop a new product series by using the special structure of macrocyclic polyepoxy. [0003] After gas ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/02C08G59/50
CPCC08L63/00C08G59/5026C08G59/5013C08L2201/08Y02P70/50
Inventor 付松李俊平孟祥南董洋崔纯燹张晨丛振霞黎源
Owner WANHUA CHEM GRP CO LTD
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