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Micrometer calcium carbonate modified PBT (polybutylene terephthalate) material with epoxy resin bonding performance and preparation method for glass bead modified PBT material

A technology of micron calcium carbonate and epoxy resin, which is applied in the field of polymer materials, can solve the problems that the viscosity change of epoxy resin is difficult to control the curing process and the packaging efficiency is reduced, and achieve good mechanical strength, improved adhesion, and low cost. Effect

Inactive Publication Date: 2016-08-24
BENGBU ZHENGYUAN ELECTRONICS TECH
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  • Abstract
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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

[0026] 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, 8 kg of alkali-free short glass fiber, 4 kg of micron calcium carbonate, hard 2 kg of sodium fatty acid, 2 kg of antioxidant JC-242.

[0027] Specific steps are as follows:

[0028] (1), preparation of microcapsule curing agent:

[0029] 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;

[0030] 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;

[0031] 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 temperat...

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Abstract

The invention discloses a micrometer calcium carbonate modified PBT (polybutylene terephthalate) material with epoxy resin bonding performance. The micrometer calcium carbonate modified PBT material consists of 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 microspheres, 5 to 8 parts of sodium dodecyl sulfate, 5 to 10 parts of gelatin, 6 to 10 parts of alkali-free short fiberglass, 2 to 4 parts of micrometer calcium carbonate, 1 to 3 parts of sodium stearate and 1 to 3 parts of an antioxidant 242. According to the micrometer calcium carbonate modified PBT material, a coated curing agent is introduced to increase the content of functional groups capable of being reacted with epoxy resin in the material, and meanwhile, a microcapsule of the microcapsule curing agent can be broken to be slowly released under a certain condition to implement curing, so that the aim of controlling a material and epoxy resin pouring sealant curing process is fulfilled, and the interface bonding performance between the material and the epoxy resin is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a micron calcium carbonate modified PBT material 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L29/04C08L89/00C08K13/06C08K9/04C08K3/26C08K7/14C08K5/42C08G59/62
CPCC08G59/62C08G59/623C08L67/02C08L2201/08C08L2205/03C08L29/04C08L89/00C08K13/06C08K9/04C08K2003/265C08K7/14C08K5/42
Inventor 夏云夏建生
Owner BENGBU ZHENGYUAN ELECTRONICS TECH
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