Television shell, preparation method thereof and television

A technology for a TV casing and an extruder, applied in the field of TVs and TV casings, can solve the problems of restricting the injection molding of TV casings, inconsistent heat dissipation, warping deformation, etc., so as to solve the problems of poor appearance and warping deformation, and improve the strength and heat resistance, the effect of avoiding adverse effects

Pending Publication Date: 2020-09-25
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of reducing the thickness of the TV shell, the fluidity of plastic materials such as HIPS is a constant value, that is, the flow length ratio (flow length / wall thickness) is a constant value. The flow length will be reduced during the molding process, resulting in incomplete filling of the TV housing mold, which restricts the injection molding of the TV housing
Moreover, since the thickness of each part of the TV casing is different, the thickness of each part of the corresponding mold will be different, then during the injection molding process, the heat dissipation of each part of the mold will be inconsistent, resulting in inconsistent cooling and heat dissipation of each part of the TV casing, and then The temperature difference between the various parts of the TV casing will cause temperature stress, resulting in poor appearance such as hysteresis lines and warping deformation of the injection-molded TV casing.

Method used

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  • Television shell, preparation method thereof and television
  • Television shell, preparation method thereof and television
  • Television shell, preparation method thereof and television

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preparation example Construction

[0034] attached Figure 4 It is a flow chart of a method for preparing a TV casing provided in an embodiment of the present application. as attached Figure 4 As shown, the method for preparing a TV casing provided in the embodiment of the present application includes:

[0035] S101: Take raw materials according to the ratio of raw materials.

[0036] According to the ratio of raw materials in the TV casing provided in the above embodiment, the raw materials are taken and mixed evenly. Optionally, put the HIPS and lubricant into a high-speed mixer, stir evenly, then add flame retardant, antioxidant and metal oxide smoke suppressant in sequence, and stir evenly.

[0037] S102: Add uniformly mixed raw materials into the hopper of the extruder, and melt and granulate the raw materials through the extruder to obtain a HIPS composite material.

[0038] After the raw materials are uniformly mixed, the uniformly mixed raw materials are transferred to the hopper of the extruder, a...

Embodiment 1

[0046] A kind of TV shell, according to HIPS 85 parts, flame retardant 18.5 parts (decabromodiphenylethane 1.5 parts, brominated triazine 17 parts) and antioxidant 1 part (antioxidant 1010) weight ratio gets raw material, Mix well and evenly; put the uniformly mixed raw materials into the hopper of the extruder, melt and granulate the raw materials through the extruder to obtain HIPS composite materials, and control the front, middle, rear and machine parts of the extruder barrel. The head temperatures were 165° C., 185° C., 195° C. and 210° C.; the HIPS composite material was injection molded to prepare a TV casing. The prepared TV casing has no defects such as hysteresis lines, warping and deformation, and produces little smoke during the manufacturing process.

Embodiment 2

[0048] A TV casing, according to 85 parts of HIPS, 19 parts of flame retardant (1.5 parts of decabromodiphenylethane, 15 parts of brominated triazine, 0.8 part of antimony trioxide), 2.5 parts of antioxidant (antioxidant 1010 ) and 1 part weight ratio of lubricant to get the raw materials, fully mixed uniformly; the uniformly mixed raw materials are added to the hopper of the extruder, and the raw materials are melted and granulated by the extruder to obtain the HIPS composite material, and the extruder is controlled The temperatures of the front, middle, rear and head of the barrel are 168°C, 180°C, 195°C and 220°C respectively; the HIPS composite material is injection molded to prepare a TV casing. The prepared TV casing has no defects such as hysteresis lines, warping and deformation, and produces little smoke during the manufacturing process.

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Abstract

The invention provides a television shell, a preparation method thereof and a television. The television shell comprises the following raw materials in parts by weight: 80-95 parts of high impact polystyrene, 10-20 parts of a flame retardant and 1-3 parts of an antioxidant, wherein the flame retardant comprises a main flame retardant and a synergistic flame retardant, the weight ratio of the mainflame retardant to the synergistic flame retardant is 1:(5-10), the main flame retardant comprises decabromodiphenyl ethane, and the synergistic flame retardant comprises bromo-triazine. According tothe television shell, the preparation method thereof and the television, the thickness of the television shell is reduced on the basis that the production process and performance requirements of the television shell are met, and the television shell meets the requirement of television thinning trend development.

Description

technical field [0001] The present application relates to the technical field of television equipment shells, in particular to a television shell, its preparation method and the television. Background technique [0002] At present, flat-panel TVs are more and more favored by consumers due to their thin body, large screen, and high-definition display, and are generally used in family rooms and conference rooms. At the same time, with the development of flat-panel TVs, in order to further promote the development of thinner flat-panel TVs, how to reduce the thickness of flat-panel TV shells while ensuring the use of flat-panel TV shells has attracted more and more attention from those skilled in the art. Reducing the thickness of the flat-panel TV shell can not only meet the development needs of thinner and lighter flat-panel TVs, but also save resources and reduce costs. Existing TV housings mostly use plastics such as high impact polystyrene (HIPS) as raw materials. For exam...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08K5/3492C08K5/03C08K3/22C08K5/523C08L83/04C08L91/06C08L23/06C08K5/098C08K5/134C08K5/526
CPCC08K5/3492C08K5/03C08K3/2279C08K5/523C08L51/04C08K5/1345C08K5/526C08L2201/02C08L83/04C08L91/06C08L23/06C08K5/098
Inventor 孙言丽王世超
Owner HISENSE VISUAL TECH CO LTD
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