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PBT material with epoxy resin cohesiveness for ignition coil and preparation method of PBT material

An epoxy resin and ignition coil technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of reduced encapsulation efficiency, difficult to control the curing process of epoxy resin viscosity changes, and achieve excellent interface bonding effect.

Inactive Publication Date: 2016-10-12
ANHUI KING AUTO ELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN 104610711 B discloses a PBT material with good epoxy resin adhesion and its preparation method. The invention uses antioxidant 24-44, antioxidant 168, antioxidant 1010 and carbon free scavenger HP136 The compounding, through the synergistic effect of each component, makes the material have excellent anti-aging performance, introduces reactive functional groups that have the ability to react with epoxy resin, and improves the interfacial adhesion with epoxy resin, but when using epoxy resin Rapid viscosity changes make it difficult to control the curing process, and rapid curing results in reduced encapsulation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weighing: 70 kg of PBT, 18 kg of cardanolamine, 18 kg of polyvinyl alcohol microspheres, 6 kg of sodium dodecyl sulfonate, 6 kg of gelatin, 9 kg of carbon nanotubes, 2 kg of zinc stearate, antioxidant Agent 245 2 kg.

[0025] Specific steps are as follows:

[0026] (1), preparation of microcapsule curing agent:

[0027] ①. Under stirring conditions, add 0.5wt% gelatin aqueous solution and 0.5wt% sodium dodecylsulfonate aqueous solution, and disperse for 40 minutes under mechanical stirring at 800 rpm to obtain an aqueous phase;

[0028] 2. In the dichloromethane solvent, add cardanolamine and polyvinyl alcohol microspheres, and disperse evenly in an ultrasonic instrument to obtain an oil phase, and gradually add the water phase prepared in step 1 into the oil phase;

[0029] ③. Stir and emulsify the mixed solution for 60 minutes, raise the reaction temperature to 32°C and stir for 4 hours, then raise the temperature to 43°C and stir for more than 4 hours. After the so...

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Abstract

The invention discloses a PBT material with epoxy resin cohesiveness for an ignition coil. The PBT material is prepared from the following raw materials in parts by weight: 60 to 80 parts of PBT, 15 to 20 parts of cardanol amine, 15 to 20 parts of polyvinyl alcohol microsphere, 5 to 8 parts of sodium dodecyl sulfate, 5 to 10 parts of gelatin, 6 to 12 parts of carbon nanotube, 1 to 3 parts of zinc stearate and 1 to 3 parts of antioxygen 245. According to the PBT material, a coated curing agent is introduced, so that the content of functional groups with reaction capacity with epoxy resin in the material is increased, and additionally, the microcapsule curing agent can break through a microcapsule and can be slowly released under certain conditions so as to complete the curing behavior, so that the purpose of controlling the curing process of the material and an epoxy resin sealant is achieved, and the interface cohesiveness between the material and the epoxy resin is increased.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT material for an ignition coil with epoxy resin adhesion and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white [0003] Color Translucent to opaque, crystalline thermoplastic polyester. It has excellent electrical properties, high heat resistance, toughness, fatigue resistance, self-lubrication, low coefficient of friction, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in a humid environment. Good, so it is widely used as engineering plastics in automobiles, electronic and electrical components. [0004] The engine ignition coil is the main component of the engine ignition system. Its function is to increase the low voltage of the car battery to a high voltage of 20kv to 40kv that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L29/04C08L89/00C08K13/04C08K7/24C08K5/098C08K5/18B01J13/02
CPCB01J13/02C08L67/02C08L2205/03C08L29/04C08L89/00C08K13/04C08K7/24C08K5/098C08K5/18
Inventor 王进
Owner ANHUI KING AUTO ELECTRONICS TECH CO LTD
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