Insulation packaging material of high capacity film capacitor

A technology for packaging materials and film capacitors, applied in the field of packaging materials, can solve problems such as high thermal conductivity and low stress, and achieve the effects of improving thermal conductivity, reducing thermal stability, and good thermal shock resistance.

Active Publication Date: 2014-11-05
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 stable electrical insulation performance of the invention can ensure long-term stable operation of large-capacity capacitors; high thermal conductivity and low stress can ensure that large-capacity capacitors can be used in harsh o

Method used

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  • Insulation packaging material of high capacity film capacitor
  • Insulation packaging material of high capacity film capacitor
  • Insulation packaging material of high capacity film capacitor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] (1) First, prepare flexible polyurethane: After removing water from polyethylene glycol 400, add TDI to the reaction kettle, pass nitrogen protection, and react at 60°C for 7 hours until the viscosity no longer increases. Cool down to 30°C and filter out. , To obtain self-made hydroxy-terminated flexible polyurethane;

[0030] (2) Preparation of component A: epoxy resin (bisphenol A epoxy resin E-51 accounts for 75%, alicyclic epoxy resin ERL-4221 accounts for 25%), self-made flexible polyurethane, needle-like silica fume Stone powder and antifoaming agent BYK-A530 are mixed according to mass percentage, added to the reactor, heated to 90°C and stirred for 90 minutes, cooled to 60°C, filtered and discharged to obtain component A;

[0031] (3) Preparation of component B: Methyltetrahydrophthalic anhydride, self-made flexible polyurethane, needle-like wollastonite powder, modified imidazole, BYK-430, 2,6-di-tert-butyl-4-methylphenol according to the quality ...

Example Embodiment

[0033] Example 2

[0034] (1) First, prepare flexible polyurethane: After removing water from polytetrahydrofuran ether glycol 250, add IPDI to the reaction kettle, pass nitrogen protection, and react at 65°C for 6 hours until the viscosity no longer increases. Cool down to 35°C and filter out To obtain self-made hydroxy-terminated flexible polyurethane;

[0035] (2) Preparation of component A: mix bisphenol A epoxy resin E-51, self-made flexible polyurethane, silicon micropowder, and defoamer BYK-A530 according to mass percentages, add them to the reactor, heat up to 90°C and stir for 100 minutes, Cool to 55°C, filter and discharge to obtain component A;

[0036] (3) Preparation of component B: the mixture of methylhexahydrophthalic anhydride and polyazelaic anhydride, self-made flexible polyurethane, silicon powder, DMP-30, BYK-430, tetrakis(4-hydroxy-3,5-tert-butyl (Phenylpropionic acid) pentaerythritol ester is mixed according to the mass percentage, added to the high-speed dis...

Example Embodiment

[0038] Example 3

[0039] (1) First, prepare flexible polyurethane: After removing water from polyethylene glycol 400, add HDI to the reaction kettle, pass nitrogen protection, react at 70°C for 4 hours until the viscosity no longer increases, cool to 40°C, and filter out. , To obtain self-made hydroxy-terminated flexible polyurethane;

[0040] (2) Preparation of component A: mix the alicyclic epoxy resin ERL-4221, self-made flexible polyurethane, alumina, and defoamer BYK-354 according to the mass percentage, add them to the reactor, heat up to 80℃ and stir for 120min, Cool to 50°C, filter and discharge to obtain component A;

[0041] (3) Preparation of component B: mix methyltetrahydrophthalic anhydride, self-made flexible polyurethane, silicon powder, modified imidazole, BYK-W995, and phenothiazine according to the mass percentage, add them to the high-speed dispersing kettle, and heat to 50°C for stirring 110min, filter out the material to obtain component B;

[0042] Mix compon...

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Abstract

An insulation packaging material of a high capacity film capacitor comprises a component A and a component B, wherein raw materials of the component A comprise 20-40wt% of epoxy resin, 50-70wt% of a heat conduction reinforcing filler, 5-10wt% of a self-made compliant polyurethane and 0.5-1.5wt% of an antifoaming agent; and raw materials of the component B comprise 25-35wt% of acid anhydride, 2-5wt% of the self-made compliant polyurethane, 60-70wt% of the heat conduction reinforcing filler, 0.5-1wt% of a curing accelerant, 0.1-0.5wt% of an anti-settling agent and 0.1-1wt% of an antioxidant. The curing packaging material is obtained through the steps of mixing the component A with the component B according to a weight ratio of 100:90-100, uniformly stirring, carrying out vacuum defoaming, filling, curing at 70-80DEG C for 2-3h, and ageing at 100-110DEG C for 6-8h. The packaging material has the advantages of excellent weatherability, hot and cold impact resistance, good bonding force with metals and plastics, and solving of the insulation packaging problem of the high capacity film capacitor.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a method for preparing insulating packaging materials for large-capacity film capacitors. Background technique [0002] All countries in the world are starting to research and develop electric double layer capacitors, that is, super large capacity capacitors. It stores energy by polarizing the electrolyte, and the energy storage process is reversible. Therefore, supercapacitors can be repeatedly charged and discharged hundreds of thousands of times, and are widely used in various fields such as new energy vehicles, power systems and grid transformation, instrumentation, backup power supplies, and high-speed rail. Large-capacity film capacitors are larger than ordinary film capacitors, and multiple capacitors are connected in series or in parallel, with complex distribution and a wide range of applications. Therefore, large-capacity film capacitors need packaging mat...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/08C08K3/36C08K7/10C08K3/22C08G18/48
Inventor 殷争艳张静
Owner 无锡东润电子材料科技有限公司
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