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Insulating encapsulation material used for photoelectric transformer

A technology for optoelectronic transformers and packaging materials, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as small curing shrinkage stress, achieve excellent insulation performance, and ensure reliability.

Active Publication Date: 2012-07-11
无锡东润电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is not sensitive to moisture during the packaging process, has small curing shrinkage stress, excellent electrical insulation performance after curing, and is resistant to cold and heat shocks. It is suitable for the packaging requirements of large-scale devices such as photoelectric transformers, and can solve the problem of high-voltage insulation of photoelectric transformers. question

Method used

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  • Insulating encapsulation material used for photoelectric transformer
  • Insulating encapsulation material used for photoelectric transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) First prepare self-made polyols: add castor oil, hydrogenated bisphenol A, vegetable oil, C3~C6 dihydric alcohols, and catalyst solid CaO into the reactor, protect it with nitrogen, and keep the temperature at 200°C in the reactor after heating up Reflux until there is no reflux, lower the temperature to 40°C, and discharge to obtain self-made polyol;

[0020] (2) Preparation of component A: self-made polyol, accelerator dibutyltin dilaurate, defoamer BYK070, antioxidant tetrakis(4-hydroxy-3,5-tert-butylphenylpropionic acid) pentaerythritol ester ( 1010) Mix according to the mass percentage, add to the mixing kettle, heat up and stir to 110°C, evacuate to below -0.1Mpa, dehydrate for 15min, then cool to room temperature, filter and discharge to obtain A component;

[0021] (3) Preparation of component B: Inhale isophorone diisocyanate into the reaction kettle, fill with dry nitrogen, raise the temperature to 60°C, stir, add the accelerator dibutyltin dilaurate and s...

Embodiment 2

[0024] (1) First prepare self-made polyols: add castor oil, hydrogenated bisphenol A, vegetable oil, C3~C6 dihydric alcohols, and catalyst solid CaO into the reactor, protect it with nitrogen, and keep the temperature in the reactor at 180°C after heating up Reflux until there is no reflux, lower the temperature to 40°C, and discharge to obtain self-made polyol;

[0025] (2) Preparation of component A: Mix self-made polyol, accelerator dibutyltin dilaurate, defoamer BYK070, antioxidant 2,6-di-tert-butyl-4-methylphenol according to mass percentage, add and mix In the kettle, heat up and stir to 110°C, evacuate to below -0.1Mpa, dehydrate for 20min, then cool to room temperature, filter and discharge to obtain component A;

[0026] (3) Preparation of component B: Inhale isophorone diisocyanate into the reaction kettle, fill with dry nitrogen, raise the temperature to 65°C, stir, add the accelerator dibutyltin dilaurate and self-made polyol dropwise within 2 hours, Insulated for...

Embodiment 3

[0029] (1) First prepare self-made polyols: castor oil, hydrogenated bisphenol A, vegetable oil, C3~C6 glycol, catalyst solid Li(OH) 2 Put it into the reaction kettle, protect it with nitrogen, keep the temperature of 240°C in the reaction kettle to reflux after heating up, until there is no reflux, cool down to 50°C, and discharge to obtain self-made polyol;

[0030] (2) Preparation of component A: self-made polyol, accelerator stannous octoate, defoamer BYK070, antioxidant tetrakis (4-hydroxy-3,5-tert-butylphenylpropionic acid) pentaerythritol ester (1010) Mix according to the mass percentage, add to the mixing kettle, raise the temperature and stir to 100°C, evacuate to below -0.1Mpa, dehydrate for 30min, then cool to room temperature, filter and discharge to obtain component A;

[0031] (3) Preparation of component B: Inhale isophorone diisocyanate into the reaction kettle, fill with dry nitrogen, raise the temperature to 50°C, stir, add the accelerator stannous octoate an...

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Abstract

The present invention relates to an insulating encapsulation material used for a photoelectric transformer, which is composed by mixing a component A and a component B, the preparation method comprises the following steps: (1) preparing self-made polyol: putting castor oil, hydrogenated bisphenol A, plant oil, C3-C6 dihydric alcohol and a catalyst into a reactor, introducing nitrogen and heating for reflux, cooling and discharging when no reflux is generated; (2) preparing the component A: putting the self-made polyol, an accelerator, an antifoaming agent and an antioxidant in a hybrid reactor, heating and stirring, vacuum dehydrating, cooling to the room temperature and then filtering; (3) preparing the component B: absorbing isophorone diisocyanate into the reactor, introducing nitrogen, heating and stirring, slowly adding the accelerator and the self-made polyol, insulating and then discharging; (4) mixing the component A and the component B and then uniformly stirring, curing at room temperature after vacuum deaeration is carried out. The insulating encapsulation material used for the photoelectric transformer has the advantages of no sensitivity to moisture during the packaging process, low curing shrinking stress, perfect electrical insulation performance after curing, and good cold and heat shock resistance.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a packaging material for photoelectric transformers. Background technique [0002] At present, with the upgrading of the power system, the digital substation system with the digital photoelectric current and voltage transformer as the core has been generally recognized by the power system. It plays a vital role. Especially when the transformer works in an outdoor high-humidity environment, once the insulating, moisture-proof, and shock-resistant packaging material cracks, the entry of moisture will cause the transformer to explode and cause immeasurable losses. The successful development of packaging materials for photoelectric transformers ensures the accuracy and reliability of photoelectric current and voltage transformers. [0003] The original air insulation, grease insulation, gas insulation, etc. can no longer meet the insulation requirements of ultra-high vo...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/67C08G18/32C09K3/10
Inventor 张静殷争艳
Owner 无锡东润电子材料科技有限公司
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