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Oil-resistant HIPS (high impact polystyrene) refrigerator inner container material and preparation method thereof

A refrigerator liner, oil-resistant technology, applied in the field of oil-resistant HIPS refrigerator liner materials and its preparation, to achieve good stability, enhance toughness, and easy processing

Active Publication Date: 2013-08-28
合肥科拜尔新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the impact of cost pressures in recent years, refrigerator manufacturers have repeatedly reduced the thickness of the plates, resulting in an increase in the "absorption cracking rate" during the adsorption process of the inner lining of the refrigerator, and "bile cracks" in the refrigerators sent to customers. This has become a difficult problem plaguing home appliance groups
The reason is mainly that the HIPS board has poor edible oil resistance and insufficient toughness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An oil-resistant HIPS refrigerator liner material, made of the following raw materials in weight ratio: HIPS 92%, polypropylene grafted maleic anhydride copolymer 1%, polyethylene grafted maleic anhydride copolymer 1%, EPDM Rubber 2%, silicone rubber 1%, ethylene bis-stearamide 1.5%, barium-zinc composite stabilizer 0.5%, antioxidant 1010 1%.

[0022] A preparation method of oil-resistant HIPS refrigerator liner material includes the following steps:

[0023] (1) Heat the HIPS to 55°C, add the barium-zinc composite stabilizer, stir and mix for 8 minutes to obtain mixture A,

[0024] (2) Heat mixture A to 85°C, add polypropylene grafted maleic anhydride copolymer, polyethylene grafted maleic anhydride copolymer, EPDM rubber, silicone rubber, ethylene bisstearamide and antioxidant Agent 1010, stir and mix for 12 minutes to obtain mixture B;

[0025] (3) The mixture B is fed into a twin-screw extruder for melt blending, extrusion, cooling, and granulation. The blending and extrus...

Embodiment 2

[0028] An oil-resistant HIPS refrigerator liner material, made of the following raw materials in weight ratio: HIPS 93%, polypropylene grafted maleic anhydride copolymer 1%, SEBS grafted maleic anhydride copolymer 1%, and ethylene propylene rubber 2% , Silicone rubber 1%, polyethylene wax 0.5%, calcium-zinc composite stabilizer 0.5%, antioxidant 168 1%.

[0029] A preparation method of oil-resistant HIPS refrigerator liner material includes the following steps:

[0030] (1) Heat HIPS to 60°C, add calcium-zinc composite stabilizer, stir and mix for 5 minutes to obtain mixture A,

[0031] (2) Heat the mixture A to 90℃, add polypropylene grafted maleic anhydride copolymer, SEBS grafted maleic anhydride copolymer, ethylene propylene rubber, silicone rubber, polyethylene wax and antioxidant 168, stir and mix for 10 minutes , Get mixture B;

[0032] (3) The mixture B is fed into a twin-screw extruder for melt blending, extrusion, cooling, and granulation. The blending and extrusion tempera...

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Abstract

The invention discloses an oil-resistant HIPS (high impact polystyrene) refrigerator inner container material and a preparation method thereof. The oil-resistant HIPS refrigerator inner container material is prepared from the following raw materials in percentage by weight: 80-95% of HIPS, 2-5% of compatibilizer, 1-5% of oil-resistant elastomer, 0.5-2% of lubricant, 0.5-3% of stabilizer and 0.5-2% of antioxidant. The preparation method comprises the following steps: mixing the HIPS and stabilizer, adding the compatibilizer, oil-resistant elastomer, lubricant and antioxidant, evenly mixing, sending into a double screw extruder together, carrying out melt blending extrusion, cooling and granulating. The HIPS refrigerator inner container material disclosed by the invention has the characteristics of favorable low temperature resistance, favorable aging resistance, favorable edible oil corrosion resistance, high toughness, high strength and the like, and is easy to process; and the preparation method has the characteristics of simple and controllable production procedure and low cost, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to an obtainable oil-resistant HIPS refrigerator liner material and a preparation method thereof. Background technique [0002] With the rapid development of my country's household appliances, refrigerators and freezers, the plastic sheet industry, which is a special liner for refrigerators and matching materials for door linings, has also developed rapidly. High-impact polystyrene (HIPS) is one of the main raw materials for the production of refrigerator liners in my country. It has excellent properties such as flame retardancy, water resistance, and chemical corrosion resistance. Due to the impact of cost pressure in recent years, refrigerator manufacturers have repeatedly reduced the thickness of the board, resulting in an increase in the "absorption cracking rate" during the adsorption process of the refrigerator lining layer, and the refrigerators sent to customers have "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04B29C47/92F25D23/08B29C48/92
CPCB29C48/022B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895F25D23/066
Inventor 王化姜之涛田兴友
Owner 合肥科拜尔新材料股份有限公司
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