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Thermal deformation resisting assistant for injection molding processing of laptop computer case

A notebook computer, injection molding technology, applied in the field of injection molding, can solve the problems of limited thermal deformation performance, that is, low thermal deformation temperature, difficult to achieve ultra-thin design, etc., to achieve the effect of improving powderability

Inactive Publication Date: 2017-12-15
ANHUI SHENGLI PRECISION MFG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of notebook computers, the overall performance of PC / ABS alloys is not ideal due to factors such as protecting fragile electronic components and strengthening the strength of the overall structure. Thin design
[0004] Heat deformation resistance is one of the important indicators for evaluating the performance of notebook computer casings. At present, the heat deformation resistance of injection molded parts of notebook computer casings mainly depends on PC and ABS, and there is no special heat deformation resistance additive for injection molding of notebook computer casings. , so its heat deformation resistance is limited, that is, the heat deformation temperature is low, and it is difficult to meet the performance requirements of the current high-end notebook computer casing

Method used

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  • Thermal deformation resisting assistant for injection molding processing of laptop computer case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Heat 100g of absolute ethanol to reflux and keep stirring, then add 10g triallyl cyanurate and 10g zinc dimethacrylate, continue to reflux and keep stirring for 3h, then add 25g fine silica aerogel , Reflux and keep stirring again for 2 hours, the resulting mixture is sent to a spray dryer after being concentrated under reduced pressure, and the dried particles are made into fine powder by a pulverizer to obtain a modified silica aerogel;

[0026] (2) Heat 10g ultrafine magnesium oxide, 3g molecular sieve micropowder and 2g asbestos wool to 115-125℃, keep and mix for 10min, then add 3g diphenylmethane bismaleimide and 0.5g titanate coupling agent, continue Incubate and mix at 115-125°C for 30 minutes, and cool to room temperature under grinding to obtain additives;

[0027] (3) Fully mix the modified silica aerogel and additives, and send the resulting mixture into a mixer, and mix at 130-140°C for 10 minutes, cool to room temperature naturally after discharge, and final...

Embodiment 2

[0030] (1) Heat 100g of absolute ethanol to reflux and keep stirring, then add 10g triallyl cyanurate and 10g zinc dimethacrylate, continue to reflux and keep stirring for 3h, then add 25g fine silica aerogel , Reflux and keep stirring again for 2 hours, the resulting mixture is sent to a spray dryer after being concentrated under reduced pressure, and the dried particles are made into fine powder by a pulverizer to obtain a modified silica aerogel;

[0031] (2) Heat 10g ultrafine magnesium oxide, 3g molecular sieve micropowder and 2g asbestos wool to 115-125℃, keep and mix for 10min, then add 3g diphenylmethane bismaleimide and 0.5g titanate coupling agent, continue Incubate and mix at 115-125°C for 30 minutes, and cool to room temperature under grinding to obtain additives;

[0032] (3) Fully mix the modified silica aerogel and additives, and send the resulting mixture into a mixer, and mix at 130-140°C for 10 minutes, cool to room temperature naturally after discharge, and final...

Embodiment 3

[0036] (1) Heat 80g of absolute ethanol to reflux and keep stirring, then add 5g triallyl cyanurate and 5g zinc dimethacrylate, continue to reflux and keep stirring for 2h, then add 20g fine silica aerogel , Reflux and keep stirring again for 2 hours, the resulting mixture is sent to a spray dryer after being concentrated under reduced pressure, and the dried particles are made into fine powder by a pulverizer to obtain a modified silica aerogel;

[0037] (2) Heat 5g ultrafine magnesia, 5g molecular sieve micropowder and 1g asbestos wool to 115-125°C and keep mixing for 10min, then add 2g diphenylmethane bismaleimide and 0.5g titanate coupling agent, continue Incubate and mix at 115-125°C for 15 minutes, and cool to room temperature under grinding to obtain additives;

[0038] (3) Fully mix the modified silica aerogel and the additives, and send the resulting mixture into a mixer, and mix at 130-140°C for 10 minutes, and cool to room temperature naturally after discharge, and final...

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Abstract

The invention discloses a thermal deformation resisting assistant for injection molding processing of a laptop computer case, and relates to the technical field of injection molding processing. The thermal deformation resisting assistant is prepared from the following raw materials in parts by weight: 15 to 25 parts of superfine silica aerogel, 5 to 10 parts of triallyl cyanurate, 5 to 10 parts of zinc dimethacrylate, 5 to 10 parts of superfine magnesium oxide, 1 to 5 parts of molecular sieve micro powder, 1 to 5 parts of diphenylmethane bismaleimide, 0.5 to 3 parts of asbestos wool, 0.5 to 3 parts of a titanate coupling agent and 50 to 100 parts of absolute ethanol. The thermal deformation resisting assistant disclosed by the invention is suitable for the injection molding processing of the laptop computer case, the thermal deformation performance of the laptop computer case can be remarkably enhanced when the mass adding amount of the thermal deformation resisting assistant is up to 3 percent, and thermal deformation temperature under 2MPa is increased to be 120 DEG C or more.

Description

Technical field: [0001] The invention relates to the technical field of injection molding, in particular to a heat-resistant deformation aid for injection molding of a notebook computer casing. Background technique: [0002] The shell of a notebook computer is not only the most direct way to protect the body, but also an important factor that affects its heat dissipation, weight, and aesthetics. Because notebook computers have the characteristics of compact structure, strong mobility, and changeable use environment, the casing material is required to have high mechanical strength, scratch resistance, excellent high and low temperature impact resistance, good heat resistance, burn resistance, and light weight. Moreover, it has excellent forming processability, electroplating and low cost. [0003] At present, most of the plastic shell laptops on the market use PC / ABS engineering plastic alloy as raw materials. This material not only has the excellent heat and weather resistance, di...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K9/04C08K7/26C08K3/22C08K7/12C08K9/00C08L69/00C08L55/02
CPCC08K13/06C08K3/22C08K7/12C08K7/26C08K9/00C08K9/04C08K9/08C08K2003/222C08K2201/014C08L69/00C08L2201/08C08L2205/035C08L55/02
Inventor 刘晓春乔印松黄现东全梦平钟远来
Owner ANHUI SHENGLI PRECISION MFG TECH CO LTD
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