High-toughness hand lay-up epoxy resin composition for wind turbine blades and preparation method thereof

A technology of epoxy resin and hand lay-up molding, which is applied in the field of epoxy resin for hand lay-up molding and its preparation. It can solve the problems of unfavorable human health and non-environmental raw materials, and achieve stable quality, high heat resistance and high compatibility. Effect

Active Publication Date: 2017-03-15
NEW UNITED GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some patented composition components also add raw materials that are not conducive to human health and are not environmentally friendly.

Method used

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  • High-toughness hand lay-up epoxy resin composition for wind turbine blades and preparation method thereof
  • High-toughness hand lay-up epoxy resin composition for wind turbine blades and preparation method thereof
  • High-toughness hand lay-up epoxy resin composition for wind turbine blades and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a high-toughness hand lay-up epoxy resin composition for wind power blades, comprising the following steps:

[0039] (1) Preparation of component A

[0040] Put 80 parts by weight of bisphenol A epoxy resin and 20 parts by weight of epoxy-terminated polyether (epoxy value 0.15) into the reaction kettle, heat to 60°C, stir for 2 hours at a stirring speed of 80r / min, and pump After vacuuming for 50 minutes, stop stirring, continue vacuuming for 5 minutes, cool down, and put the resin into packaging barrel 1;

[0041] (2) Preparation of component B

[0042] Put 30 parts by weight of m-xylylenediamine and 10 parts by weight of isophoronediamine into the reaction kettle, heat up to 100°C, add 30 parts by weight of phenolic resin in 4 batches, and stir for 7 hours at a stirring speed of 80r / min. After the phenolic resin is completely dissolved, cool down to below 50°C, add 13.9 parts by weight of m-xylylenediamine, 16 parts by weight of benzyl alcohol...

Embodiment 2

[0045] A method for preparing a high-toughness hand lay-up epoxy resin composition for wind power blades, comprising the following steps:

[0046] (1) Preparation of component A

[0047] Put 80 parts by weight of bisphenol A epoxy resin and 20 parts by weight of epoxy-terminated polyether (epoxy value 0.1) into the reactor, heat to 50°C, and stir for 1.5 hours at a stirring speed of 100r / min. Stop stirring after evacuating for 60 minutes, continue to evacuate for 30 minutes, cool down, and put the resin into packaging barrel 1;

[0048] (2) Preparation of component B

[0049] Put 20 parts by weight of m-phenylenediamine and 24 parts by weight of isophorone diamine into the reaction kettle, heat up to 110°C, add 26 parts by weight of phenolic resin in two batches, and stir for 3 hours at a stirring speed of 100r / min. After the phenolic resin is completely dissolved, cool down to below 50°C, add 10 parts by weight of m-xylylenediamine, 20 parts by weight of benzyl alcohol and ...

Embodiment 3

[0052] A method for preparing a high-toughness hand lay-up epoxy resin composition for wind power blades, comprising the following steps:

[0053] (1) Preparation of component A

[0054] Put 90 parts by weight of bisphenol A epoxy resin and 10 parts by weight of epoxy-terminated polyether (epoxy value 0.125) into the reaction kettle, heat to 80°C, and stir at a stirring speed of 50r / min for 1.8h. Stop stirring after evacuating for 30 minutes, continue to evacuate for 25 minutes, cool down, and put the resin into packaging barrel 1;

[0055] (2) Preparation of component B

[0056] Put 10 parts by weight of isophoronediamine and 28 parts by weight of m-xylylenediamine into the reactor, heat to 105°C, add 30 parts by weight of phenolic resin in 3 batches, and stir for 6 hours at a stirring speed of 50r / min. After the phenolic resin is completely dissolved, cool down to below 50°C, add 19 parts by weight of m-xylylenediamine, 12 parts by weight of benzyl alcohol and 1 part by we...

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Abstract

The invention relates to a high-toughness hand lay-up epoxy resin composition for wind turbine blades and a preparation method thereof. The resin is prepared from component A and component B, wherein the component A is prepared from bisphenol A epoxy resin and epoxy terminated polyether elastomer; the component B is prepared from alicyclic amine, aromatic amine, benzyl alcohol, phenolic resin and an amino silane coupling agent; traditional diluent is replaced by the epoxy terminated polyether elastomer in the component A; the alicyclic amine, the aromatic amine and the high-softening-point phenolic resin in the component B can produce condensation reaction to jointly toughen epoxy resin with epoxy terminated polyether; the hand lay-up epoxy resin cure product with higher impact toughness and elongation at break is prepared. The cure product prepared through the method has appropriate operable time, gelation time and curing time, also can be cured in the temperature of 25 + / - 3 DEG C, can meet the manufacture and reinforcement requirements of varieties of large components in different environments, can be widely applied to the field of manufacturing and reinforcing the large compound material components, sports equipment, varieties of moulds and adhesives.

Description

technical field [0001] The invention relates to an epoxy resin for hand lay-up and a preparation method thereof, in particular to an epoxy resin composition for hand lay-up of wind power blades and a preparation method thereof. Background technique [0002] At present, the domestically produced epoxy resin composition has short operating time, low mechanical properties, especially low impact toughness and elongation at break, which cannot meet the requirements of manufacturing and reinforcing large wind turbine blades, so researchers have passed Modification of epoxy resins in order to obtain products with better performance. [0003] Chinese patent CN101186744A discloses a kind of epoxy resin system that is made up of epoxy resin, reactive diluent and hardener (amine and imidazole compound), and its resin / hardener needs gel time longer (> 200min), does not need Suitable for hand lay-up. [0004] Chinese patent 201310483288.8 application discloses a preparation method o...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L71/00C08K5/544C08G59/62C08G59/56
CPCC08G59/56C08G59/62C08L63/00C08L2205/025C08L71/00C08K5/544
Inventor 金诚徐建东张玉黄锦锦戚红宇
Owner NEW UNITED GROUP
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