Composite material used for casing of audio and video equipment as well as preparation method, and audio and video equipment

A composite material, audio and video technology, applied in the field of polymer materials, can solve the problems of harmful operators' health, the shell cannot be assembled with the whole machine, endangering the production environment, etc., and achieves excellent appearance, improved heat resistance, and reduced linear expansion coefficient. Effect

Active Publication Date: 2016-08-03
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shrunken shell cannot be assembled into the whole machine. If it is assembled by force, there will be quality defects such as flash seams that reduce the quality of the equipment, resulting in a huge waste of cost.
In addition, when the shell of audio and video equipment is injection molded, due to shutdown or abnormal problems, the plastic particles will stagnate in the screw for too long, and pyrolysis will occur, releasing a large amount of smoke, which will endanger the production environment and the health of operators.

Method used

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  • Composite material used for casing of audio and video equipment as well as preparation method, and audio and video equipment
  • Composite material used for casing of audio and video equipment as well as preparation method, and audio and video equipment
  • Composite material used for casing of audio and video equipment as well as preparation method, and audio and video equipment

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the audio-video equipment casing material of the present embodiment, the steps are:

[0025] 1) Put the ultra-fine talc powder and metal oxide into the high-speed mixer according to the ratio, stir evenly, then add it into HIPS, and then add flame retardant, antioxidant and lubricant in turn, and stir evenly;

[0026] 2) Transfer the uniformly mixed materials above to the hopper of the twin-screw extruder, turn on the twin-screw extruder, and control the temperatures of the front, middle, rear and head of the barrel to 165-170°C, 180-190°C, 195-205°C, 210-230°C, in which the head screw speed is controlled at 200-230rpm / min;

[0027] 3) The molten material extruded by the twin-screw extruder is water-cooled, pelletized, sieved, and dried to obtain a HIPS composite material, which is the audio-video equipment casing material of the present invention.

[0028] This embodiment also provides an audio-video device, including a casing, the casing is in...

Embodiment 1-3

[0030] The HIPS composites were prepared according to the formula shown in Table 1.

Embodiment 1

[0031] In Example 1, the particle size of ultrafine talcum powder is 6 μm, the lubricant is a mixture of calcium stearate and silicone, and the smoke suppressant is Fe 2 o 3 with MoO 3 mixture.

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Abstract

The invention discloses a composite material used for a casing of audio and video equipment as well as a preparation method, and audio and video equipment. The composite material comprises components in parts by weight as follows: 80-95 parts of high impact polystyrene HIPS, 2-10 parts of talc powder, 10-20 parts of fire retardant, 1-2 parts of metallic oxide smoke suppressor, 3-5 parts of antioxidant, and 1-3 parts of lubricant. The preparation method is as follows: the talc powder, the HIPS and the lubricant are sequentially added into a high-speed mixer and stirred evenly, and the fire retardant, the antioxidant and the metallic oxide smoke suppressor are then sequentially added and stirred evenly; extrusion is performed by a double-screw extruder, and the material used for the casing of the audio and video equipment is obtained after steps including water-cooling, grain-sized dicing, sieving and drying. Through the combination of the superfine talc powder and a polystyrene molecular chain, the after-shrinkage of the plastic casing is effectively suppressed, and performance of the plastic casing is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a composite material suitable for audio and video equipment shells and a preparation method thereof, and audio and video equipment using the composite material as the shell material. Background technique [0002] Audio and video equipment, including audio and video recording, playback and processing equipment in various carrier forms, such as TV, computer, stereo, etc. Most of the shells of audio and video equipment use polymer composite materials, such as PC (polycarbonate), ABS (acrylic acid), etc. Nitrile-butadiene-styrene), HIPS (polystyrene), etc., require the shell material to have certain strength, flame retardancy, weather resistance and aesthetics. [0003] With the international business expansion of the home appliance industry, China's audio and video equipment is exported to most markets in the world, such as Europe and the United States. Some ho...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L51/04C08K13/02C08K3/34C08K5/523C08K3/22C08K5/3492C08K5/03B29C47/92B29C48/92
CPCB29C2948/92704C08K3/2279C08K5/03C08K5/1345C08K5/523C08K5/526C08K13/02C08K2201/003C08K2201/014C08L51/04C08L2201/02C08L2201/08C08L2201/22C08L83/04C08K3/34C08K5/098C08K5/3492C08L91/06
Inventor孙言丽
OwnerHISENSE VISUAL TECH CO LTD