HIPS (high impact polystyrene) three-layer composite board for inner container of refrigerating device and preparation method thereof

Abstract

The invention discloses an HIPS (high impact polystyrene) three-layer composite board for the inner container of a refrigerating device and a preparation method of the HIPS three-layer composite board. The HIPS three-layer composite board for the inner container of the refrigerating device comprises a surface layer, a base layer and bottom layer, wherein the surface layer is made from the surface layer HIPS, and the surface layer HIPS is selected from at least one or more of natural color HIPS, dyeing HIPS and modified extrusion grade HIPS; the base layer comprises natural color extrusion grade HIPS and feed material; and the bottom layer is made from foaming agent corrosion-resistant HIPS. According to the HIPS three-layer composite board for the inner container of the refrigerating device of the embodiments of the invention, the surface layer, the base layer and the bottom layer are made from the HIPS material, the various screened HIPS materials are good in compatibility, and can be mixed with one another, and the appearance and the machining performance of the board can not be obviously influenced, so that the strength of the board can be improved, and the cracking risk can be reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment manufacturing, more specifically, the invention relates to a HIPS three-layer composite board for the inner tank of a refrigeration equipment and a preparation method thereof. Background technique [0002] The high-gloss HIPS composite panels for refrigerators / freezers in the prior art all adopt a three-layer composite system, and the surface layer is high-gloss HIPS. The bottom layer is HIPS for ordinary extrusion grade refrigerators. This board has the following disadvantages: [0003] 1. The high-gloss surface layer has low strength, brittleness, and no corrosion resistance. The resulting lining, especially the box lining, is easy to crack, and there are quality risks; [0004] 2. In order to reduce the possibility of cracking, the thickness of the surface layer is usually less than 3%, and the mold is also affected. The gloss of the obtained box lining is actually very low, a...

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Problems solved by technology

[0003] 1. The high-gloss surface layer has low strength, brittleness, and no corrosion resistance. The resulting lining, especially the box lining, is easy to crack, and there are quality risks;

[0004] 2. In order to reduce the possibility of cracking, the thickness of the surface layer is usually less than 3%, and the mold is also affected. The gloss of the obtained box lining is actually very low, and even the gloss cannot be seen;

[0005] 3. The thickness of the extruded board surface layer is not easy to control, and the qualified rate of extruded board and blister is low;

[0008] 1. Different grades of ABS special materials provided by different suppliers have differences in color and performance;

[0009] 2. There are compatibility problems between different ABS special materials, and they cannot be mixed, which causes inconvenience to production management;

[0010] 3. At present, only a few companies can produce this kind of ABS special material, all rely on imports, the purchase cycle is long, and the price is high

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