A composite material injection molding process

An injection molding process and composite material technology, applied in the field of composite injection molding process, can solve problems such as product promotion obstacles, and achieve the effects of good mechanical properties, low cost and energy consumption, and high gloss.

Active Publication Date: 2020-12-29
昆山益兴荣电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, with the improvement of people's living standards, the requirements for the surface properties of various parts are getting higher and higher, so the appearance defects of plastic products in the existing injection molding process have become an obstacle to product promotion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A composite material injection molding process, the composite material is formed by mixing matrix resin and metal powder through twin-screw extrusion; the injection molding process includes the following steps: (a), drying the composite material, drying temperature The temperature is 80°C, and the drying time is 2 hours; (b), the dried composite material is sent into the injection molding machine, and heated to a molten state; the plasticizing time is 15s, and the plasticizing temperature is 230°C; (c), the melting The state liquid flow is injected into the mold cavity from multiple nozzles, and the injection is continued every 1 minute after an interval of 1 minute. The injection pressure is 50Pa, the injection temperature is 220°C, and the cooling time is 40s; (d), ejection after injection molding Demoulding, blowing with ion air gun, so as to obtain composite material products. The composite product had a 60° gloss of 82%.

[0027] The added amount of the metal powd...

Embodiment 2

[0029] A composite material injection molding process, the composite material is formed by mixing matrix resin and metal powder through twin-screw extrusion; the injection molding process includes the following steps: (a), drying the composite material, drying temperature The temperature is 85℃, and the drying time is 3h; (b), send the dried composite material into the injection molding machine, and heat it to a molten state; the plasticizing time is 20s, and the plasticizing temperature is 230℃; (c), the molten The state liquid flow is injected into the mold cavity from multiple nozzles, and the injection is continued every 2 minutes after an interval of 2 minutes. The injection pressure is 150Pa, the injection temperature is 180°C, and the cooling time is 50s; (d), ejection after injection Demoulding, blowing with ion air gun, so as to obtain composite material products. The composite product had a 60° gloss of 81%.

[0030] The added amount of the metal powder in parts by ...

Embodiment 3

[0032] A composite material injection molding process, the composite material is formed by mixing matrix resin and metal powder through twin-screw extrusion; the injection molding process includes the following steps: (a), drying the composite material, drying temperature The temperature is 85°C, and the drying time is 2 hours; (b), the dried composite material is sent into the injection molding machine, and heated to a molten state; the plasticizing time is 18s, and the plasticizing temperature is 240°C; (c), the melting The state liquid flow is injected into the mold cavity from multiple nozzles, and the injection is performed every 1 minute with an interval of 1 minute. The injection pressure is 100Pa, the injection temperature is 200°C, and the cooling time is 45s; (d), ejection after injection Demoulding, blowing with ion air gun, so as to obtain composite material products. The composite product had a 60° gloss of 83%.

[0033] The added amount of the metal powder in pa...

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PUM

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Abstract

The invention relates to a composite material injection molding forming technology. An existing injection molding forming technology is optimized and improved, metal powder of Ti, Mg, Al, Ni, Mo and other components and matrix resin are utilized as composite material raw materials, the multi-sprayer intermittent injection molding manner is adopted, under the technology conditions of the injectionmolding pressure, the temperature, the time and the like obtained through repeated tests, finally-obtained plastic products have good mechanical performance, and the technical characteristics that fewsurface defects exist, the glossiness at 60 DEG C is larger than 80%, and cost and energy consumption are low are achieved.

Description

technical field [0001] The invention relates to the field of injection molding technology for plastic products, in particular to a composite material injection molding technology. Background technique [0002] Injection molding by mold is the most widely used plastic product processing method, and the number of injection molded products is close to 1 / 3 of the total plastic products. Injection molding is a main processing method of plastic products. It has the characteristics of high production efficiency, high degree of automation, high processing precision, less waste, and can form products with complex shapes at one time. It is used in automobiles, electrical appliances, communications, medical and health, aerospace , R products and other fields have been widely used. A complete injection molding process includes plasticization, injection, pressure holding, cooling, mold opening, ejection, pick-up, mold closing and other working processes. The specific injection molding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/00B29C45/76B29C45/77B29C45/78
CPCB29C45/0025B29C45/76B29C45/77B29C45/78B29C2045/0096B29C2945/76498B29C2945/76531B29C2945/76561
Inventor 申志强
Owner 昆山益兴荣电子科技有限公司
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