Universal refrigerant resistant solvent-free impregnating resin for high and low voltage motor and preparation method thereof

An impregnating resin, high and low voltage technology, which is applied in the field of general solvent-free impregnating resin for high and low voltage motors and its preparation, can solve the problems of non-environmental protection, large volatilization, inconvenient use, etc., and achieve the effect of low VOC content

Active Publication Date: 2012-07-25
SUZHOU JUFENG ELECTRICAL INSULATION SYST
View PDF5 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Among the existing refrigerant-resistant insulating varnishes (resins) at home and abroad, the typical example is the CC-1105 insulating varnish of the American DOLPHON company, which has a viscosity greater than 100s (4# viscometer, 25°C). It is used in the insulation treatment of high-voltage motors and requires heating and impregnation. , inconvenient to use, expensive
Domestic Sichuan Dongcai Technology Group Co., Ltd.’s DY001 insulating varnish is used in the insulation treatment of low-voltage motors. The solvent content is greater than 40%, which is highly volatile, pollutes the environment, is not environmentally friendly, and is not suitable for high-voltage motors.
There is no environmentally friendly refrigerant-resistant insulating impregnation resin that can take into account both high and low voltage motors in the market, so it is necessary to develop a new environmentally friendly high and low voltage motor that is free of volatile substances such as styrene and has excellent refrigerant resistance. General Refrigerant Resistant Impregnated Resin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Universal refrigerant resistant solvent-free impregnating resin for high and low voltage motor and preparation method thereof
  • Universal refrigerant resistant solvent-free impregnating resin for high and low voltage motor and preparation method thereof
  • Universal refrigerant resistant solvent-free impregnating resin for high and low voltage motor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the formula of the solvent-free impregnation resin of the present embodiment is as follows:

[0034] 6kg of unsaturated polyesterimide resin solution with a solid content of 70%;

[0035] Solid content is 1.8kg of the polyoxazolidone resin solution of 80%;

[0036] Cross-linking monomer (vinyltoluene) 1.5kg;

[0037] Curing agent (chromium acetylacetonate) 0.35kg;

[0038] Initiator (dicumyl peroxide) 0.175kg;

[0039] Inhibitor (hydroquinone) 2.4g.

[0040] The preparation of described solvent-free impregnation resin comprises the steps:

[0041] (1), preparation solid content is the unsaturated polyesterimide resin solution of 70%: in a standard there-necked flask, add 252g neopentyl glycol, 116g isophthalic acid, 128g maleic anhydride, 53.4g pyrene Triformic anhydride (phenyl) imidic acid and 0.5g p-toluenesulfonic acid, heated up to 200°C under the protection of nitrogen, reacted for 5~6h, when the acid value dropped below 20mgKOH / g, cooled to 100°C,...

Embodiment 2

[0045] According to the formula of the solvent-free impregnation resin of the present embodiment is as follows:

[0046] 4.5kg of unsaturated polyesterimide resin solution with a solid content of 70%;

[0047] Solid content is 3.2kg of the polyoxazolidinone resin solution of 80%;

[0048] Cross-linking monomer (vinyltoluene) 2kg;

[0049] Curing agent (zirconium acetylacetonate) 0.5kg;

[0050] Initiator: 200g dicumyl peroxide + 40g tert-butyl peroxybenzoate;

[0051] Inhibitor (p-benzoquinone) 4.5g.

[0052] The preparation of described solvent-free impregnation resin comprises the steps:

[0053] (1), preparation solid content is the unsaturated polyesterimide resin solution of 70%: in a standard there-necked flask, add 238g neopentyl glycol, 26.1g Saike, 116g isophthalic acid, 14.6g adipic acid, 128g of maleic anhydride, 19.5g of tetrahydrophthalic anhydride iminoethyl alcohol and 0.45g of p-toluenesulfonic acid were heated to 200°C for 5-6 hours under the protection o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a universal refrigerant resistant solvent-free impregnating resin for a high and low voltage motor and a preparation method thereof. The impregnating resin is composed of 45-65 parts of unsaturated polyesterimide resin solution with 65-75% of solid content, 15-35 parts of oxazolidone resin solution with 75-85% of solid content, 10-25 parts of environment-friendly dilutingagent, 3-8 parts of curing agent, 1-3 parts of initiating agent and 0.01-0.06 part of polymerization inhibitor; the raw material formula of an unsaturated polyesterimide resin comprises a first monomer, a second monomer and a third monomer, wherein the first monomer is selected from one or multiple of neopentyl glycol, propoxylation bisphenol A and trihydroxyethyl isocyanurate; the second monomeris selected from one or multiple of isophthalic acid, hexanedioic acid, trimellitie anhydride and maleic anhydride; and the third monomer is a compound containing imide groups. The resin provided by the invention has low content of VOC (Volatile Organic Compounds), resists novel refrigerating fluids such as R134a and is universal for the high and low voltage motor.

Description

technical field [0001] The invention belongs to the technical field of insulating impregnating resin (vacuum pressure impregnating), and in particular relates to a refrigerant-resistant general-purpose solvent-free impregnating resin for high and low voltage motors and a preparation method thereof. Background technique [0002] Motor electrical windings such as motors and transformers can operate safely and reliably only after being insulated and dipped in varnish. After the winding coil is treated with VPI varnish, it is baked and solidified into a whole, which improves the insulation performance and mechanical strength, avoids partial discharge in the internal air gap, improves the ability of moisture resistance and salt spray resistance, enhances the reliability of operation, and prolongs the service life. It is one of the most important links in the motor manufacturing process. Refrigerant-cooled motors, the windings are exposed to refrigerant for a long time. The commo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L75/00C08K5/07C08K5/098C08K5/14C08J3/24
Inventor 徐伟红袁世臻何少波夏宇宁方为安小珍
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap