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

• Main Authors: HAN YONGHU, CHEN YUHANG, ZHANG SHIYONG, SHI YAO, CHEN RUIPING
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

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. 本发明公开了种点火线圈专用环氧树脂灌封胶及其制备方法，该种点火线圈专用环氧树脂灌封胶包括A组分和B组分，A组分和B组分的质量份数比为5:1；A组分包括双酚A型环氧树脂、PEO-PPO-PEO三嵌段共聚物、端羧基液体丁腈橡胶、微硅粉、氢氧化铝和乙二醇缩水甘油醚，其质量比为100:0.1~0