Preparation method for ceramic plastic composite structure part and shell of electronic equipment

A composite structure, ceramic plastic technology, applied in the field of electronic equipment shell, ceramic plastic composite structural parts preparation, can solve the problems of high injection pressure, ceramic layer burst, etc., to improve bonding strength, improve bonding strength, excellent comprehensive mechanical properties Effect

Inactive Publication Date: 2018-08-17
南通通州湾新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method adopts the normal pressure casting process, which solves the problem of the ceramic layer bursting when the injection pressure is too high during the in-mold injection molding process

Method used

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  • Preparation method for ceramic plastic composite structure part and shell of electronic equipment
  • Preparation method for ceramic plastic composite structure part and shell of electronic equipment
  • Preparation method for ceramic plastic composite structure part and shell of electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation process of drop-resistant ceramic plastic mobile phone shell

[0035]Add 5kg of alumina ceramic powder with a D50 of 0.7um, 25g of water-based polybutylacrylate and 12.5kg of deionized water into a stirring mill and stir thoroughly for 2 hours, then spray dry at 260°C to obtain granulated powder, and add the granulated powder to the dry pressing mold According to 1200kg.f / cm 2 The pressure is pressed to obtain the blank of the ceramic part, and the cold isostatic pressing is shaped, and then stacked. The temperature is raised to 600°C at 1°C / min and kept for 2 hours. .

[0036] Soak the ceramic structure blank in a 0.3mol / L hydrofluoric acid solution at a temperature of 95°C for 30 minutes, take it out, rinse it, and then perform CNC machining to remove the surface machining allowance and flexibly polish the outer surface to obtain a ceramic structure. The surface is coated with a layer of 50um polyisocyanate glue for later use.

[0037] Weigh 200g of cap...

Embodiment 2

[0040] Preparation process of drop-resistant ceramic plastic watch case

[0041] Weigh 10g of stearic acid, 2kg of zirconia ceramic powder with a D50 of 0.5um, and 80g of No. 58 paraffin wax, add the weighed raw materials to a 3L internal mixer, and banbury at 150°C for 1h to obtain the feed, and add the feed to the injection molding In the machine, the back cover of the watch is obtained by injection molding at 150MPa, stacked and placed in a degreasing furnace, and the temperature is slowly raised to 170°C at a rate of 0.2°C / min. Press 1°C / min, raise the temperature to 450°C for two hours, then raise the temperature to 650°C at 1°C / min, then raise the temperature to 1500°C at a rate of 5°C / min and keep it for 2 hours, then cool down to 950°C at 5°C / min. Cool to obtain a watch blank.

[0042] Soak the blank in a 3mol / L hydrofluoric acid solution at a temperature of 60°C for 10 minutes, take it out and rinse it off, then go through CNC machining to remove the surface machinin...

Embodiment 3

[0046] Preparation process of drop-resistant ceramic plastic car key press keyboard

[0047] Weigh 9g of stearic acid, 2kg of silicon oxide powder with a D50 of 1um, and 80g of No. 58 paraffin wax, add the weighed raw materials to a 3L internal mixer, and banbury at 150°C for 1h to obtain the feed, and put the feed into the injection molding machine Injection molding at 150MPa to get the car key keypad green body, put it into the degreasing furnace and slowly raise the temperature to 170°C at a rate of 0.2°C / min, keep it warm for 20 hours and then cool it with the furnace, then stack the green body into the sintering Press 1°C / min in the furnace, heat up to 450°C for two hours, then heat up to 650°C at 1°C / min, then raise the temperature to 1250°C at a rate of 5°C / min and hold for 2 hours, then cool down with the furnace to obtain the car key keypad ceramic blank .

[0048] Soak the blank in a 1.5mol / L hydrofluoric acid solution at a temperature of 70°C for 20 minutes, take i...

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Abstract

The invention provides a preparation method for a ceramic plastic composite structure part and a shell of electronic equipment. The preparation method for the ceramic plastic composite structure partcomprises the steps that a ceramic exterior part is first prepared, and then the ceramic plastic composite structure part is obtained by casting nylon monomer in the ceramic exterior part after heating and heat preservation and curing. The preparation method uses the nylon monomer normal pressure casting process, the problem of ceramic crack due to over-high injection pressure in the in-mold injection molding process is solved, the bonding strength of nylon and ceramics is high, and due to long time of heat preservation and curing, the polymerized nylon molecular weight is large and the mechanical comprehensive performance is good. In order to improve the bonding strength of the ceramics and cast nylon, a nanometer roughened surface is obtained by using acid liquid to corrode the ceramic surface before casting, and then a layer of polyisocyanate glue layer is spin-coated on the roughened surface as the transition layer to improve the bonding strength of the ceramics and the cast nylon.Shells of ceramic plastic composite electronic equipment such as mobile telephone shells, watch back covers, car key shells can be prepared by the preparation method for the ceramic plastic compositestructure part.

Description

technical field [0001] The invention relates to the technical field of preparation of structural parts, in particular to the technical field of preparation of composite structural parts, in particular to a preparation method of a ceramic-plastic composite structural part and an electronic device casing. Background technique [0002] With the rapid development of mobile phones, wristbands (watches) and other consumer electronics and automotive communications, consumer electronics shells and other appearance structural parts have made great progress, but also encountered new problems. In particular, 5G communication and automotive high-frequency communication demand for materials and the improvement of consumers' aesthetic ability. The traditional single metal casing and plastic casing are difficult to satisfy consumers. Ceramics are more and more favored by consumers and design manufacturers because of their warmth and moistness like jade. However, ceramics have poor toughnes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/10
CPCB29C39/10
Inventor 周涛
Owner 南通通州湾新材料科技有限公司
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