Capacitor coating with deep drawing resistant performance and high temperature yellowing resistance and preparation thereof

A deep-drawing performance, capacitor technology, applied in polyester coatings, coatings, etc., can solve problems such as insufficient comprehensive performance balance

Active Publication Date: 2009-07-15
清远慧谷新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of current capacitor coatings that are not sufficiently balanced in temperature resistance, deep drawing resistance, and pressure resistance,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] Recipe (1)

[0043] Bisphenolic acid 11.2g

[0044] Acetic anhydride 25ml

[0045] Pyridine 0.12ml

[0046] Recipe (2)

[0047] Bisphenolic acid acetate A 21.7g

[0048] Bisphenolic acid 3.5g

[0049] Formula (3)

[0050]Hyperbranched polyester resin B 25.7

[0051] SK chemicals ES-710 10.5g

[0052] BayerDesmodur BL3475SN 5.2g

[0053] king industry K-FLEX A307 3.7g

[0054] PE slip wax 0.1g

[0055] Epoxy phosphate Lubrizol 2061 0.4g

[0056] Dibutyltin dilaurate 0.2g

[0057] Defoamer BYK354 0.1g

[0058] Leveling agent EFKA-3777 0.2g

[0059] Propylene glycol methyl ether acetate 20g

[0060] Solvesso 100 solvent 32.9g

[0061] The preparation steps of hyperbranched polyester resin are as follows:

[0062] 1. Under the condition of nitrogen protection, in a reaction flask equipped with electromagnetic stirring, thermometer and condenser, add each substance in formula (1) in sequence, stir and mix evenly. After the bisphenolic acid is completely disso...

Example Embodiment

[0067] Example 2

[0068] Recipe (1)

[0069] Bisphenolic acid 15.2g

[0070] Acetic anhydride 20ml

[0071] Pyridine 0.12ml

[0072] Recipe (2)

[0073] Bisphenolic acid acetate A 33.6g

[0074] Bisphenolic acid 4.0g

[0075] Recipe (3)

[0076] Hyperbranched polyester resin B 32.0g

[0077] Italkid 300 7.5g

[0078] BayerDesmodur BL3475SN 4.2g

[0079] king industry K-FLEX A307 4.2g

[0080] MF-5 PTFE slip wax 0.1g

[0081] Epoxy phosphate Lubrizol 2061 0.3g

[0082] Dibutyl tin diacetate 0.2g

[0083] Defoamer BYK088 0.1g

[0084] Leveling agent EFKA-3777 0.2g

[0085] Propylene glycol methyl ether acetate 25g

[0086] Solvesso 100 solvent 26.2g

[0087] The preparation steps of hyperbranched polyester resin are as follows:

[0088] 1. Under the condition of nitrogen protection, in a reaction flask equipped with electromagnetic stirring, thermometer and condenser, add each substance in formula (1) in sequence, stir and mix evenly. After the bisphenolic acid is completely disso...

Example Embodiment

[0093] Example 3

[0094] Recipe (1)

[0095] Bisphenolic acid 20.7g

[0096] Acetic anhydride 40ml

[0097] Pyridine 0.27ml

[0098] Recipe (2)

[0099] Bisphenolic acid acetate A 38.6g

[0100] Bisphenolic acid 8.5g

[0101] Recipe (3)

[0102] Hyperbranched polyester resin B 36.4g

[0103] Dynapol L-912 8.0g

[0104] BayerDesmodur BL3175SN 5.8g

[0105] king industry K-FLEX A307 4.2g

[0106] LP1040F PE slip wax 0.1g

[0107] Epoxy phosphate HA2802 0.3g

[0108] Dibutyltin oxide 0.2g

[0109] Defoamer BYK354 0.1g

[0110] Leveling agent Naybo 62 0.2g

[0111] Propylene glycol methyl ether acetate 20.0g

[0112] Solvesso 100 solvent 24.7g

[0113] The preparation steps of the capacitor coating with deep drawing performance and high temperature non-yellowing are the same as in Example 2.

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Abstract

The invention discloses a non-yellowing capacitor coating at a high temperature having deep drawing resistance performance and a preparation method thereof. The capacitor coating in the invention is prepared from the materials according to the following parts by weight: 20 to 50 parts of hyperbranched polyester resin, 1 to 7 parts of saturated polyester resin, 3 to 12 parts of isocyanate, 0 to 0.5 parts of adhesion promoter, 0 to 0.15 parts of slipping wax, 0 to 0.3 parts of organic tin catalyst, 2.0 to 6.0 parts of resin modifier, 0.07 to 1.0 parts of defoamer, 0.15 to 0.20 parts of flatting agent, and 30 to 62 parts of solvents. The hyperbranched polyester resin, saturated polyester resin and isocyanate are put into a container so as to prepare a mixture after high-speed dispersing; the rest of the materials are then put into the mixture so as to mix homogeneously by medium-speed dispersing, thereby obtaining the non-yellowing capacitor coating at a high temperature having deep drawing resistance performance. The capacitor in the invention has the characteristics of deep drawing resistance, good percentage elongation of coating film and no yellowing at a high temperature.

Description

technical field [0001] The invention belongs to the technical field of capacitor coatings, and in particular relates to a capacitor coating with deep drawing resistance and high temperature non-yellowing and a preparation method thereof. Background technique [0002] Electronic components are used in different environments, so they have sufficient resistance to humidity, heat, mildew, salt spray, etc. Moisture has a particularly pronounced effect on components. Therefore, most electronic components require coating encapsulation. This is a protective measure for insulation and moisture resistance, and it can also prevent mechanical abrasion and beautify the appearance. The requirements for coating materials mainly have advantages in terms of dielectric properties, temperature resistance, mechanical strength, anti-aging, and moisture resistance. [0003] The production of electronic capacitors generally adopts the vacuum impregnation process to coat the coating after the al...

Claims

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Application Information

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IPC IPC(8): C09D167/00
Inventor 冯志德唐靖熊华山兰家勇
Owner 清远慧谷新材料技术有限公司
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