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Epoxy solvent-free impregnating resin with low viscosity and preparation method thereof

An epoxy resin and impregnating resin technology, which is applied in the fields of low-viscosity epoxy solvent-free impregnating resin and its preparation, insulating resin and its preparation, can solve the problems of high viscosity, complicated operation, high energy consumption, etc. The effect of process performance

Inactive Publication Date: 2012-01-04
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of solvent-free insulating impregnation resin has a high viscosity, requires heating when used, complicated operation and high energy consumption.

Method used

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  • Epoxy solvent-free impregnating resin with low viscosity and preparation method thereof
  • Epoxy solvent-free impregnating resin with low viscosity and preparation method thereof
  • Epoxy solvent-free impregnating resin with low viscosity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The formula of low viscosity epoxy solvent-free impregnating resin is shown in Table 2:

[0027] Table 2 Formula one of impregnating resin

[0028]

[0029] The manufacturing process of low-viscosity epoxy solvent-free impregnating resin is as follows:

[0030] 1. Add bisphenol A epoxy resin into the reaction kettle, and heat up to 60°C while stirring at 1500rpm;

[0031] 2. Add 1,4-butanediol diglyceride, stir at 1500rpm for 1h, and cool to room temperature;

[0032] 3. Add hexahydrophthalic anhydride and triethylamine, and stir for 30 minutes;

[0033] 4. Vacuum for 10 minutes, and the vacuum degree should be controlled between -0.06~-0.1MPa;

[0034] 5. Release the vacuum to obtain epoxy solvent-free impregnating resin.

Embodiment 2

[0036] The formula of low viscosity epoxy solvent-free impregnating resin is shown in Table 3:

[0037] Table 3 Formula 2 of impregnating resin

[0038]

[0039] The manufacturing process of low-viscosity epoxy solvent-free impregnating resin is as follows:

[0040] 1. Add bisphenol F epoxy resin into the reaction kettle, and heat up to 70°C while stirring at 2000rpm;

[0041] 2. Add 3-glycidoxypropyl methyl diethoxy silicon, stir at 2000 rpm for 1 hour, and cool to room temperature;

[0042] 3. Add tetrahydrophthalic anhydride and benzyldimethylamine and stir for 40 minutes;

[0043] 4. Evacuate for 40 minutes and control the vacuum degree between -0.06~-0.1MPa;

[0044] 5. Release the vacuum to obtain epoxy solvent-free impregnating resin.

Embodiment 3

[0046] The formula of low viscosity epoxy solvent-free impregnating resin is shown in Table 4:

[0047] Table 4 Formula 3 of impregnating resin

[0048]

[0049] The manufacturing process of low-viscosity epoxy solvent-free impregnating resin is as follows:

[0050] 1. Add bisphenol A epoxy resin and bisphenol F epoxy resin into the reactor, and heat up to 100°C while stirring at 2500 rpm;

[0051] 2. Join C 12 ~C 14 Alkyl glycidyl ether, stirring at 2500rpm for 1h, and cooling to room temperature;

[0052] 3. Add maleic anhydride and triethanolamine and stir for 35 minutes;

[0053] 4. Vacuum for 30 minutes, and the vacuum degree should be controlled between -0.06~-0.1MPa;

[0054] 5. Release the vacuum to obtain epoxy solvent-free impregnating resin.

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Abstract

The invention relates to an epoxy solvent-free impregnating resin with a low viscosity and a preparation method thereof. The epoxy solvent-free impregnating resin comprises the following components in parts by weight: 35-55 parts of epoxy resin, 5-15 parts of active diluent, 0.1-10 parts of accelerator and 30-55 parts of curing agent. The preparation method comprises the following steps of: adding the epoxy resin into a reactor, raising the temperature to 60-100 DEG C while agitating, adding the active diluent, uniformly mixing and agitating, cooling to a room temperature, adding the curing agent and the accelerator, agitating for 30-40 minutes, vacuumizing for 10-40 minutes, controlling the vacuum degree between -0.06MPa and -0.1MPa, and finally obtaining the epoxy solvent-free impregnating resin with a low viscosity. Non-toxic or low-toxic glycidyl ether with mono-functionality or poly-functionality is utilized to reduce the viscosity of the impregnating resin and improve the technical properties of the impregnating resin, and meanwhile, extremely low volatile content meets the requirements of environment friendliness.

Description

Technical field [0001] The invention relates to an insulating resin and a preparation method thereof, in particular to a low-viscosity epoxy solvent-free impregnating resin and a preparation method thereof, and belongs to the technical field of polymer materials. Background technique [0002] With the rapid development of my country's economic and technological level, people have gradually realized that the development of the economy should not be at the expense of the environment. With the increase in environmental protection requirements, the insulating paint is transformed into a less-polluting and non-polluting environmentally friendly paint. Solvent-free impregnating resin has been an important research topic for many insulating materials scientists at present. [0003] Epoxy resin has good comprehensive mechanical properties, high adhesion, low shrinkage, good stability, and excellent electrical insulation properties. It is used as coatings, adhesives, composite resin matrix, ...

Claims

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Application Information

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IPC IPC(8): C08G59/20C08G59/40C08G59/42
Inventor 廖波张步峰李鸿岩田苗
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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