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Special epoxy resin potting adhesive for ignition coils and preparation method thereof

A technology of epoxy resin and ignition coil, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of high water absorption rate and lower water absorption rate, and achieve excellent heat resistance, excellent electrical performance, and excellent hygroscopic effect

Active Publication Date: 2017-05-10
浙江嘉尔成汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a special epoxy resin potting glue for ignition coils, which solves the problem of excessive water absorption and has the effect of reducing water absorption

Method used

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  • Special epoxy resin potting adhesive for ignition coils and preparation method thereof
  • Special epoxy resin potting adhesive for ignition coils and preparation method thereof
  • Special epoxy resin potting adhesive for ignition coils and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0032] Embodiment 1-4 is a special epoxy resin potting glue for ignition coil, which is prepared by the following method:

[0033] Step 1, preparation of component A:

[0034] Mix the bisphenol A type epoxy resin, carboxyl-terminated liquid nitrile rubber and ethylene glycol glycidyl ether in the formulated amount, heat up to 130°C and dry for 1-1.5 hours, then add the formulated amount of uniformly dispersed aluminum hydroxide, micro The mixture of silicon powder and F127 type PEO-PPO-PEO tri-block copolymer is stirred and dispersed evenly, and then sand-milled and exhausted in turn to obtain it; the particle size of the obtained component A is 50-100 μm;

[0035] Step 2, preparation of component B:

[0036] Mix the liquid methyltetrahydrophthalic acid in the formula quantity and the PEO-PPO-PEO triblock copolymer of the F127 type, stir and disperse evenly, then gradually add the calcium carbonate in the formula quantity, exhaust gas treatment, and obtain; Particle size of ...

Embodiment 5

[0041] Embodiment 5 is an epoxy resin potting compound specially used for ignition coils. The difference from Embodiment 1 is that the PEO-PPO-PEO tri-block copolymer is selected as F68 type.

Embodiment 6

[0042] Embodiment 6 is an epoxy resin encapsulant specially used for ignition coils. The difference from Embodiment 1 is that the PEO-PPO-PEO triblock copolymer is of L64 type.

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Abstract

The invention discloses a special epoxy resin potting adhesive The special epoxy resin potting adhesive for ignition coils comprises a component A and a component B in a mass ratio of 5:1. The component A comprises the following ingredients in parts by mass: 100 parts of bisphenol A epoxy resin, 0.1-0.2 part of PEO-PPO-PEO (polyoxyethylene-polypropylene oxide-polyoxyethylene) triblock copolymer, 20-25 parts of carboxy-terminated liquid nitrile-butadiene rubber, 10-20 parts of micro silicon powder, 5-10 parts of aluminum hydroxide and 5-10 parts of ethylene glycol diglycidyl ether. The component B comprises the following ingredients in parts by mass: 100 parts of liquid methyltetrahydrophthalic acid, 0.5-1 part of PEO-PPO-PEO triblock copolymer and 20-25 parts of calcium carbonate. The special epoxy resin potting adhesive has the effect of lowering water absorptivity.

Description

technical field [0001] The invention relates to the technology of an epoxy resin-based adhesive, in particular to a special epoxy resin potting glue for an ignition coil and a preparation method thereof. Background technique [0002] In the secondary winding of the ignition coil, the enameled wire of 0.03-0.06mm is wound with thousands to more than ten thousand turns, and the voltage generated during operation is as high as tens of kilovolts. There are more than ten slots, and more than ten thousand winding groups are wound in the slots to form more than ten coils. In this way, each group of coils also bears a voltage of several thousand volts. The transition gap between each slot and the inter-turn insulation of the enameled wire in each slot is not enough to rely on the strength provided by the enameled wire insulation layer, and must rely on the strength of the epoxy resin. filling. [0003] The Chinese patent with the publication number CN102417694A and the publication...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/04C09J11/06C09J11/08
CPCC08L2201/08C08L2205/03C09J11/04C09J11/06C09J11/08C09J163/00C08L71/00C08L13/00C08K3/36C08K2003/2227C08K5/1515
Inventor 陈宇航韩勇虎张式勇陈瑞平史垚
Owner 浙江嘉尔成汽车部件有限公司
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