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Elastic epoxy resin and application thereof

An epoxy resin and elastic technology, applied in the field of elastic epoxy resin and its preparation, can solve the problems of unusable, high viscosity of paint liquid, difficult to use large electrical parts, etc., and achieve good wear resistance effect

Active Publication Date: 2021-07-27
株洲市九华新材料涂装实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity of the paint liquid, conventional construction methods such as air spraying cannot be used, and it is difficult to use it on large electrical parts.

Method used

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  • Elastic epoxy resin and application thereof
  • Elastic epoxy resin and application thereof
  • Elastic epoxy resin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Preparation of Elastic Epoxy Emulsions

[0062] The formula is as shown in Table 1:

[0063] Table 1 Flame Retardant Elastic Epoxy Emulsion Raw Materials

[0064]

[0065]

[0066] The preparation process is:

[0067] Put adipic acid, hexachloromethylene phthalic anhydride, and propylene glycol into the reactor according to the formula, start stirring, raise the temperature to 190-220°C, react for 3h-4h until the acid value is ≤100mgKOH / g, and cool down to 140- Add dibromoneopentyl glycol at 160°C, raise the temperature to 190-220°C, and react for 4h-6h until the acid value is ≤20mgKOH / g. Turn on the vacuum pump, evacuate to -0.8MPa, and keep the pressure for 0.5h-1h. Stop the vacuum pump. Cool rapidly to below 140°C and discharge. A flame-retardant elastic polyester prepolymer is obtained.

[0068] Put CYD-011 epoxy resin and flame-retardant elastic polyester prepolymer into the reaction kettle according to the formula, raise the temperature to 100-120°C an...

Embodiment 2

[0075] A water-based flame-retardant surface insulating paint, which is made by mixing components A and B; component A is the self-made water-based flame-retardant elastic epoxy emulsion of formula 1, Lanxess 4110 iron oxide red, Kaibai ZPA zinc phosphate, Nano aluminum hydroxide, self-made silicon carbide dispersion, Gree GA-5 mica powder, antimony trioxide, Tego-755W dispersant, Hemings 105A thickening rheological agent, methyl isothiazolinone antifungal agent and A mixture of deionized water, the weight ratio of each substance is 40%, 8%, 8%, 4%, 15%, 8%, 10%, 0.9%, 0.6%, 0.8% and 12%; B component is Han A mixture of Sen EPIKURE6870-W-53 modified alicyclic amine, Heros X-150 anti-flash rust agent, ethylene glycol monobutyl ether, dipropylene glycol methyl ether, the weight ratio of each substance is 80%, 2%, and 10% respectively and 5%. The weight ratio of the two components is 80%, 20%.

[0076] The preparation method of the self-made silicon carbide dispersion is as fol...

Embodiment 3

[0086] 1. Preparation of water-based flame-retardant elastic epoxy emulsion: same as Example 1.

[0087] 2. A water-based flame-retardant surface insulating paint, which is formed by mixing components A and B, wherein the weight ratio of components A and B is 50:50; component A is the self-made water-based flame-retardant elastic paint of formula 2 Epoxy emulsion, DuPont R706 rutile titanium dioxide, Orion U carbon black, Kaibai ZPO zinc phosphate, nano aluminum hydroxide, silicon carbide dispersion, Gree GA-5 mica powder, antimony trioxide, allnex 6208 dispersant , Hemings 105A thickening rheology agent, methylisothiazolinone antifungal agent and a mixture of deionized water, the weight ratio of each substance is 35%, 14.26%, 0.04%, 5%, 10%, 8% respectively , 10%, 10%, 1.2%, 0.5%, 10%; B component is a mixture of Dutch QR chemical QR-RIT1071 modified fatty amine, FA179 anti-flash rust agent, diethylene glycol butyl ether, dipropylene glycol butyl ether , The weight ratio of ...

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Abstract

A preparation method of disclosed elastic epoxy resin comprises the following steps: mixing adipic acid, hexachlorobridge methylene phthalic anhydride, propylene glycol and dibromo neopentyl glycol for reaction to obtain a hydroxyl-terminated flame-retardant elastic polyester prepolymer; and reacting the hydroxyl-terminated flame-retardant elastic polyester prepolymer with bisphenol A epoxy resin under the action of a catalyst to obtain the elastic epoxy resin. The resin provided by the invention has many active groups, so that the adhesive force of the prepared coating film on amorphous alloy, silicon steel and mould pressing composite materials (slot wedges) can reach more than 10 MPa, and the adhesive force on the surface of a fluorosilicone pouring sealant can also reach 5 MPa. The water-based flame-retardant surface insulating paint provided by the invention has an oxygen index greater than or equal to 40, and has good wear resistance.

Description

technical field [0001] The invention relates to an elastic epoxy resin and a preparation method thereof, and also relates to a water-based insulating varnish prepared from the elastic epoxy resin. Background technique [0002] The iron core is the core equipment in electrical components such as motors, transformers, pumps, and air-conditioning compressors. Its operating status and service life are directly related to the status and life of electrical components. Most of the iron core materials are silicon steel or iron-based amorphous alloys, and the surface properties of the materials are relatively active. When used in harsh environments, the surface is prone to rust and other defects. Affect the iron loss, magnetic permeability, coercive force and other indicators of the iron core as a whole, and reduce the working efficiency of electrical parts. In severe cases, electrical components will fail. The temperature of the iron core is high during operation, and after the in...

Claims

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Application Information

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IPC IPC(8): C08G81/00C09D187/00C09D5/25C09D5/18C09D7/62
CPCC08G81/00C09D187/005C09D5/00C09D5/18C09D7/62C08K2003/2227C08L2201/02C08K3/34C08K9/02C08K3/36C08K3/22C08K3/2279C08K13/06
Inventor 邓强孙贤国龚文晶
Owner 株洲市九华新材料涂装实业有限公司
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