Composite plastic for power supply bracket and preparation method of composite plastic

A technology of composite plastics and power supply brackets, applied in the field of power supply brackets, can solve the problems of damage to internal components of storage, affecting product quality, and unstable power supply, and achieves inhibition of thermal decomposition, excellent mechanical properties, and improvement of processing fluidity and thermal stability. sexual effect

Pending Publication Date: 2020-12-22
安徽越洋达新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current power supply bracket has technical problems of poor toughness and poor thermal stability during use, which can easily break the bracket and cause the power supply to be not fixed firmly, causing damage to internal components of the storage, affecting product quality, increasing costs, and causing unnecessary waste

Method used

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  • Composite plastic for power supply bracket and preparation method of composite plastic
  • Composite plastic for power supply bracket and preparation method of composite plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a composite plastic for a power supply bracket, comprising the steps of:

[0026] S1. Mix 20kg of expanded graphite and 140kg of 30% ethanol aqueous solution by mass fraction, ultrasonically disperse for 30min, and the ultrasonic power is 35kHz, then stir for 1h under reflux at 90°C, the stirring speed is 500r / min, drop to 40°C, and adjust with ammonia water The pH value of the system is 7.4-8 to obtain pretreated expanded graphite;

[0027] S2. Stir 150kg of pretreated expanded graphite, slowly add 5kg of tetraethyl orthosilicate dropwise under the stirring state, the stirring speed is 1500r / min, continue to stir for 2h after the addition is complete, drop to room temperature, wash with ethanol aqueous solution after suction filtration until neutral, dispersed in 50% ethanol aqueous solution, and spray-dried to obtain a silica-expanded graphite composite;

[0028] S3, 100kg α-crystalline polypropylene, 15kg styrene-based thermoplastic elastomer,...

Embodiment 2

[0030] A method for preparing a composite plastic for a power supply bracket, comprising the steps of:

[0031] S1. Mix 25kg of expanded graphite and 100kg of 40% ethanol aqueous solution by mass fraction, ultrasonically disperse for 20min, the ultrasonic power is 45kHz, then stir for 2h under reflux at 80°C, the stirring speed is 400r / min, drop to 50°C, adjust with ammonia water The pH value of the system is 7.4-8 to obtain pretreated expanded graphite;

[0032] S2. Stir 120kg of pretreated expanded graphite, slowly add 8kg of tetraethyl orthosilicate dropwise under the stirring state, the stirring speed is 1200r / min, continue to stir for 4h after the addition is complete, drop to room temperature, wash with ethanol aqueous solution after suction filtration Until it is neutral, it is dispersed in a 40% ethanol aqueous solution by mass fraction, and spray-dried to obtain a silica-expanded graphite composite;

[0033] S3, 100kg α-crystalline polypropylene, 25kg styrene-based t...

Embodiment 3

[0035] A method for preparing a composite plastic for a power supply bracket, comprising the steps of:

[0036] S1. Mix 22kg of expanded graphite and 130kg of 33% ethanol aqueous solution by mass fraction, ultrasonically disperse for 28min, and the ultrasonic power is 38kHz, then stir for 1.3h under reflux at 87°C, the stirring speed is 480r / min, drop to 43°C, and use ammonia water The pH value of the adjustment system is 7.4-8 to obtain pretreated expanded graphite;

[0037] S2. Stir 140kg of pretreated expanded graphite, slowly add 6kg of tetraethyl orthosilicate dropwise under the stirring state, the stirring speed is 1400r / min, continue to stir for 2.5h after the addition is complete, drop to room temperature, and use ethanol aqueous solution after suction filtration Wash until neutral, disperse in 47% ethanol aqueous solution, spray dry to obtain silica-expanded graphite composite;

[0038]S3, 100kg of α-crystalline polypropylene, 18kg of styrene-based thermoplastic elas...

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Abstract

The invention discloses a preparation method of composite plastic for a power supply bracket, which comprises the following steps: mixing expanded graphite and an ethanol water solution, carrying out35-45kHz ultrasonic dispersion for 20-30 minutes, conducting stirring at 80-90 DEG C under a reflux state for 1-2 hours, and conducting cooling to 40-50 DEG C to obtain pretreated expanded graphite; stirring the pretreated expanded graphite, slowly dropwise adding tetraethoxysilane in a stirring state, continuously conducting stirring after the tetraethoxysilane is completely dropwise added, conducting cooling to room temperature, performing suction filtration, conducting washing to be neutral, conducting dispersing in an ethanol aqueous solution, and performing spray drying to obtain a silicon dioxide-expanded graphite compound; and uniformly mixing polypropylene, a styrene thermoplastic elastomer, the silicon dioxide-expanded graphite compound, fumed silica, wollastonite powder, ceramicfibers, talcum powder, maleic anhydride grafted polypropylene, far infrared ceramic powder, lignocellulose, a coupling agent, a flexibilizer, a lubricant and an antioxidant, carrying out melt extrusion, cooling, and granulating with a granulator, and conducting drying to obtain the composite plastic for the power supply bracket.

Description

technical field [0001] The invention relates to the technical field of power supply brackets, in particular to a composite plastic used for power supply brackets and a preparation method thereof. Background technique [0002] A power supply is a device that provides power to electronic equipment, also known as a power supply, which provides the electrical energy required by all components in electrical equipment. Whether the current and voltage are stable, as well as the power of the power supply will directly affect the working performance and service life of electrical equipment. Power supply products are widely used in industrial automation control, military equipment, scientific research equipment, industrial control equipment, computers and computers, communication equipment, electrical equipment, instrumentation, medical equipment, semiconductor refrigeration and heating and other fields. [0003] In order to achieve firmness and avoid falling off of the power supply ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/02C08L51/06C08L97/02C08K13/06C08K9/02C08K7/24C08K3/36C08K7/26C08K3/34C08K7/04C08K3/00
CPCC08L23/12C08L2201/08C08L2205/035C08K2201/014C08L2205/24C08L53/02C08L51/06C08L97/02C08K13/06C08K9/02C08K7/24C08K3/36C08K7/26C08K3/34C08K7/04C08K3/00
Inventor 刘朋飞
Owner 安徽越洋达新能源科技有限公司
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