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Halogen-free flame retardant PBT material with epoxy-resin cohesive performance and preparing method thereof

A technology of epoxy resin and adhesion, which is applied in the field of halogen-free flame-retardant PBT materials and its preparation, can solve the problems of reduced packaging efficiency, difficulty in controlling the curing process of epoxy resin viscosity changes, etc., and achieve excellent interface bonding effect

Inactive Publication Date: 2016-11-16
BENGBU ZHENGYUAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, 16 kg of polyvinyl alcohol microspheres, 6 kg of sodium dodecyl sulfonate, 6 kg of gelatin, 4 kg of GWIT flame retardant, 2 kg of silica clay, carbon nano Tube 8 kg, zinc stearate 2 kg.

[0027] Specific steps are as follows:

[0028] (1) Preparation of microcapsule fat curing agent:

[0029] ①. Under stirring conditions, add 0.5wt% gelatin aqueous solution and 0.5wt% sodium dodecylsulfonate aqueous solution, and disperse under mechanical stirring at 800 rpm for 50 minutes 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 35°C and stir for 4 hours, then raise the temperature to 40°C and stir for more than 4 ...

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Abstract

The invention discloses a halogen-free flame retardant PBT material with the epoxy-resin cohesive performance. The halogen-free flame retardant PBT material is prepared from, by weight, 60-80 parts of PBT, 15-20 parts of cardanol amine, 15-20 parts of polyvinyl alcohol microspheres, 5-8 parts of sodium dodecyl sulfate, 5-10 parts of gelatin, 3-6 parts of GWIT fire retardant, 1-3 parts of kaolin, 6-12 parts of carbon nanometer tubes and 1-3 parts of zinc stearate. According to the halogen-free flame retardant PBT material, the contents of functional groups with the reaction capacity in a coated curing-agent improving material and epoxy resin is led; meanwhile, microcapsules can be opened through a microcapsule curing agent under the certain condition, the microcapsule curing agent is slowly released, the curing behavior is completed, the aim of controlling the curing process of the material and an epoxy resin potting adhesive is achieved accordingly, and the interfacial adhesion performance between the material and the epoxy resin is improved; in addition, as the GWIT fire retardant with the high carbon forming effect is added, and treatment is carried out through a compatilizer, the glass-fiber reinforcing material has the GWIT with the value of 750 DEG C or above while the conventional flame retardant performance is met.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a halogen-free flame-retardant 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 to 4...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L29/04C08L89/00C08K13/06C08K9/10C08K7/24C08K5/098C08K3/34C08K5/42
CPCC08L67/02C08L2201/02C08L2201/22C08L2205/03C08L29/04C08L89/00C08K13/06C08K9/10C08K7/24C08K5/098C08K3/34C08K5/42
Inventor 夏云夏建生
Owner BENGBU ZHENGYUAN ELECTRONICS TECH
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