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Refrigerator inner container, refrigerator inner container material and preparation method of refrigerator inner container material

A technology for a refrigerator liner and a toughening agent is applied in the refrigerator liner material and its preparation, and in the field of refrigerator liner, and can solve the problems of application limitation, inability to have ultra-low temperature, high toughness and grease resistance at the same time, and reducing the low temperature performance of materials.

Inactive Publication Date: 2020-10-27
HISENSE RONSHEN GUANGDONG REFRIGERATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the liner of the refrigerator is usually made of high-impact polystyrene (HIPS), but HIPS will become brittle at around -30°C
And the refrigerator liner will inevitably come into contact with cooking oil, and cooking oil will make HIPS more prone to cracking at low temperatures
Therefore, the inner liner material of the refrigerator freezer needs to meet a certain oil resistance. In order to improve the oil resistance of the material, the usual method is to increase the polarity of the material, increase the interaction force between molecular chains, etc., but the above methods often reduce the oil resistance. The low-temperature performance of the material, therefore, cannot have ultra-low temperature high toughness and grease resistance at the same time, which greatly limits the application of HIPS in the home appliance industry

Method used

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  • Refrigerator inner container, refrigerator inner container material and preparation method of refrigerator inner container material
  • Refrigerator inner container, refrigerator inner container material and preparation method of refrigerator inner container material
  • Refrigerator inner container, refrigerator inner container material and preparation method of refrigerator inner container material

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preparation example Construction

[0042] refer to figure 1 , figure 1 Shown is a flow chart of the preparation method of the inner liner material of the refrigerator of the present invention, the preparation method of the refrigerator liner material is as follows, comprising the following steps:

[0043] S1. In terms of mass percentage, weigh 65-85 parts of high-impact polystyrene, 10-25 parts of toughening agent, 1-10 parts of compatibilizer, and 0.5-5 parts of oil-resistant modifier , 0.5 to 1 part of lubricant, 0.1 to 1 part of antioxidant.

[0044] S2. Put the high-impact polystyrene, toughening agent, compatibilizer and oil-resistant modifier into a high-speed mixer, stir and mix for 5-15 minutes, and obtain mixture A.

[0045] S3. Heat mixture A to 80-90° C., then add lubricant and antioxidant, and continue stirring and mixing for 10-25 minutes to obtain mixture B.

[0046] S4. Add mixture B to a twin-screw extruder for melt blending, extrusion, cooling, and granulation. The blending extrusion tempera...

Embodiment 1

[0049] In terms of mass content, the refrigerator liner materials include:

[0050]

[0051] The preparation method of the refrigerator liner material comprises the following steps:

[0052] S11. According to the above ratio, weigh each component of the refrigerator liner material.

[0053] S12. Put high-impact polystyrene, high-cis-1,4-polybutadiene rubber, styrene-butadiene-styrene block copolymer and polyisobutylene into a high-speed mixer, and stir and mix for 15 minutes , to obtain mixture A.

[0054] S13. Heat mixture A to 80° C., then add solid paraffin and antioxidant 1076, and continue stirring and mixing for 10 minutes to obtain mixture B.

[0055] S14. Add the mixture B to the twin-screw extruder, and carry out melt blending, extrusion, cooling, and granulation at a blending extrusion temperature of 180-230°C and a screw speed of 180r / min to obtain the refrigerator. gall material.

Embodiment 2

[0057] In terms of mass content, the refrigerator liner materials include:

[0058]

[0059] The preparation method of the refrigerator liner material comprises the following steps:

[0060] S21. According to the above ratio, weigh each component of the refrigerator liner material.

[0061] S22. Combine high-impact polystyrene, high-cis-1,4-polybutadiene rubber, styrene-butadiene rubber (SBR) with core-shell structure, block copolymer of styrene-butadiene-styrene and poly The isobutene was put into a high-speed mixer, stirred and mixed for 5 minutes, and a mixture A was obtained.

[0062] S23. Heat mixture A to 90° C., then add ethylene bis stearic acid amide and antioxidant 1076, and continue stirring and mixing for 20 minutes to obtain mixture B.

[0063] S24. Add the mixture B to a twin-screw extruder, and carry out melt blending, extrusion, cooling, and granulation at a blending extrusion temperature of 180-230°C and a screw speed of 200r / min to obtain a refrigerator....

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Abstract

The invention provides a refrigerator inner container, a refrigerator inner container material and a preparation method of the refrigerator inner container material. The refrigerator inner container material comprises the following components in parts by mass: 65-85 parts of high impact polystyrene, 10-25 parts of a toughening agent, 1-10 parts of a compatilizer, 0.5-5 parts of an oil-resistant modifier, 0.5-1 part of a lubricant and 0.1-1 part of an antioxidant, wherein the toughening agent is prepared from high cis-1, 4-polybutadiene rubber, and the oil-resistant modifier is polyisobutene with the molecular weight of 800-8000. According to the refrigerator inner container material, the components are matched for use, so that the refrigerator inner container material has low temperature resistance (resistant to -60 DEG C) and grease resistance, and has very high practical value.

Description

technical field [0001] The invention relates to the technical field of refrigerator liners, in particular to a refrigerator liner, a material for the refrigerator liner and a preparation method thereof. Background technique [0002] With the continuous improvement of the quality of life, people have stricter dietary requirements. For example, they hope that the ingredients are as fresh as possible without loss of nutrition. Low temperature is the most direct and convenient way to lock in the umami and nutrition of ingredients. Seafood is the most sensitive to umami. In order to lock in the umami of seafood for a long time, it needs sufficient low temperature. For example, the freshness indicators of seafood products such as salmon and abalone in the low temperature environment of -60°C are significantly better than those of -18°C, even better than -18°C. The freshness index of tuna is more stringent. In the seafood cold storage project, the storage temperature usually need...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08L9/00C08L53/02C08L9/06C08L23/20C08L91/06C08L23/16C08K5/134C08K5/20C08K5/526
CPCC08L51/04C08L2205/08C08L2205/035C08L2205/025
Inventor 谷洋常雪松
Owner HISENSE RONSHEN GUANGDONG REFRIGERATOR
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