Core-shell particle modified PBT (polybutylene terephthalate) material with epoxy resin adhesion and preparation method thereof
A technology of epoxy resin and adhesion, which is applied in the field of core-shell particle modified 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., to achieve improved adhesion, Good synergistic toughening effect
Inactive Publication Date: 2016-10-26
BENGBU ZHENGYUAN ELECTRONICS TECH
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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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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, 10 kg of mica powder, 8 kg of nitrile rubber, 2 kg of maleic anhydride kg, 2 kg of azobisisobutyronitrile, and 2 kg of polysiloxane.
[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 core-shell particle modified PBT (polybutylene terephthalate) material with epoxy resin adhesion, made from the following materials according to parts 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, 8-12 parts of mica powder, 5-10 parts of nitrile rubber, 1-2 parts of maleic anhydride, 1-2 parts of azodiisobutyronitrile and 1-3 parts of polysiloxane. By introducing a coated curing agent, functional group content of the material which can react with epoxy resin is increased, and the microcapsule curing agent can break off microcapsules for slow release under certain conditions, so that the pouring sealant curing process of the material and the epoxy resin is controlled and interfacial adhesion 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 core-shell particle-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 to 4...
Claims
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IPC IPC(8): C08L67/02C08L29/04C08L89/00C08L9/02C08L83/04C08K9/10C08K9/04C08K3/34C08G59/62
CPCC08G59/62C08L67/02C08L2205/035C08L29/04C08L89/00C08L9/02C08L83/04C08K9/10C08K9/04C08K3/34
Inventor 夏云夏建生
Owner BENGBU ZHENGYUAN ELECTRONICS TECH