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Carbon nano tube reinforcing epoxy structural adhesive and method for preparing same

A technology of epoxy structural adhesive and carbon nanotubes, applied in the direction of epoxy resin adhesive, adhesive, adhesive type, etc. The effect of improving performance, improving mechanical properties and high impact toughness

Inactive Publication Date: 2011-10-12
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Epoxy resin (EP) has been used abroad since the 1930s. It contains a variety of polar groups and highly active epoxy groups. It has excellent bonding strength and dielectric properties to the surface of metal and non-metal materials. Good, low set shrinkage, high hardness, etc., but its toughness is poor, the cured product is brittle, and its resistance to peeling, cracking, impact, and tensile properties is poor, which is greatly limited in expanding its application field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Accurately weigh the following raw materials, bisphenol A epoxy resin 50g, bisphenol F epoxy resin 10g, carbon nanotube reinforced epoxy resin 10g, fumed silicon 18g, triphenylphosphine oxide 2g, 1,4- Butanediol diglycidyl ether 10g, the above-mentioned components are added in the double planetary power mixer in turn, vacuumed to -0.1MPa, under the condition that the rotation speed is 1000 rpm and the revolution speed is 8 rpm, Stir mechanically for 2 hours to obtain component A, mix evenly to obtain component A of the epoxy resin adhesive, pack and place it for use; mix curing agents such as N-aminoethylpiperazine 3g, isophoronediamine 39g, polyether Mix 37g of amine, 13g of bis(4-amino-3-methylcyclohexyl)methane, and 8g of thixotropic agent such as fumed silicon to obtain component B of the epoxy resin adhesive, which is packaged and placed for use.

[0028] When in use, mix the prepared component A and component B uniformly at a weight ratio of 100:45, cure at 60°C f...

Embodiment 2

[0030] Accurately weigh the following raw materials, bisphenol A epoxy resin 50g, bisphenol F epoxy resin 10g, carbon nanotube reinforced epoxy resin 2g, fumed silicon 23g, resorcinol 10.5g, 1,6- Add 9.5g of hexanediol diglycidyl ether, add the above-mentioned components into the double planetary power mixing mixer in turn, vacuumize to -0.1MPa, under the conditions of rotation speed of 1000 rpm and revolution speed of 10 rpm , mechanically stirred for 2 hours to obtain component A, mixed evenly to obtain component A of the epoxy resin adhesive, packaged and placed for use; curing agents such as isophorone diamine 42g, polyetheramine 32g, bis(4-amino Mix 7g of cyclohexyl)methane, 9g of diaminodiphenylmethane, and thixotropic agent such as fumed silicon 10g to obtain component B of the epoxy resin adhesive, which is packaged and placed for use.

[0031] When in use, mix the prepared component A and component B uniformly at a weight ratio of 100:49.5, cure at 68°C for 6 hours, a...

Embodiment 3

[0033]Accurately weigh the following raw materials: 60g of bisphenol A epoxy resin, 5g of bisphenol F epoxy resin, 6g of carbon nanotube reinforced epoxy resin, 19g of fumed silicon, 1g of polyacrylamide, butyl glycidyl ether ( BGE) 9g, add the above components into the double planetary power mixing mixer in turn, vacuumize to -0.09MPa, and mechanically stir for 2 hours under the conditions of rotation speed of 800 rpm and revolution speed of 15 rpm to obtain Component A, mixed evenly to obtain component A of the epoxy resin adhesive, packed and placed for use; curing agents such as triethylenetetramine 3g, isophoronediamine 37g, polyetheramine 37g, m-xylylenediamine 3g, 10g of bis(4-amino-3-methylcyclohexyl)methane, and 10g of a thixotropic agent such as fumed silicon are mixed evenly to obtain component B of the epoxy resin adhesive, which is packaged and placed for use.

[0034] When in use, mix the prepared component A and component B uniformly at a weight ratio of 100:40....

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Abstract

The invention discloses carbon nano tube reinforcing epoxy structural adhesive and a method for preparing the same. The structural adhesive comprises a component A and a component B, and the weight ratio of the component A to the component B is 100:40.5-100:49.5, wherein the component A comprises the following raw materials in percentage by weight: 50 to 68 percent of epoxy resin, 1 to 10 percent of carbon nano tube epoxy resin reinforcing solution, 10 to 25 percent of thixotropic agent, 0.5 to 12.5 percent of additive and 2 to 10 percent of reaction thinner; and the component B comprises the following raw materials in percentage by weight: 90 to 95 percent of curing agent and 5 to 10 percent of thixotropic agent. The preparation method comprises the following steps of: mixing the component A and the component B, wherein the weight ratio of the component A to the component B ranges from 100:40.5 to 100:49.5; curing the mixture at the temperature of between 60 and 70 DEG C for 5 to 7 hours; and performing polyreaction to obtain the finished product.

Description

technical field [0001] The invention relates to a carbon nanotube reinforced epoxy structural adhesive and a preparation method thereof, belonging to the field of epoxy resin adhesives. Background technique [0002] MW-level wind turbine blades and units operate around the clock under very harsh weather conditions and alternating load conditions, and with the increasing size and power of wind power blades, the resistance to epoxy resin The performance requirements are higher, including high strength, high toughness, fatigue resistance and other properties, and the matrix epoxy resin must be modified. The role of the epoxy structural adhesive is to bond the upper and lower half-skin shells of the wind rotor blades to each other to form a solid whole. Each wind rotor blade requires approximately 300-400 kg of epoxy resin adhesive. Epoxy structural adhesives for wind turbine blades require high mechanical strength, strong impact resistance, and excellent fatigue resistance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C09J11/04C09C1/44C09C3/08
Inventor 许愿王建斌解海华
Owner YANTAI DARBOND TECH
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