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Flame-retardant PVC (polyvinyl chloride) composite material for refrigerator back plate and preparation method of flame-retardant PVC composite material

A composite material and flame retardant technology, which is applied in the field of flame retardant PVC composite materials for refrigerator backplanes and their preparation, can solve the problem that the flame retardant effect can only reach UL94-V1 level, and can solve the problem that the strength is greatly reduced, Good resistance to deformation and the effect of preventing the spread of fire

Active Publication Date: 2022-08-05
汪旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the refrigerator backboard made of PVC composite material in this field can basically meet the application requirements of the refrigerator backboard in terms of mechanical strength, but the flame retardant effect can only reach UL94-V1 level.

Method used

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  • Flame-retardant PVC (polyvinyl chloride) composite material for refrigerator back plate and preparation method of flame-retardant PVC composite material
  • Flame-retardant PVC (polyvinyl chloride) composite material for refrigerator back plate and preparation method of flame-retardant PVC composite material
  • Flame-retardant PVC (polyvinyl chloride) composite material for refrigerator back plate and preparation method of flame-retardant PVC composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]

[0050]

[0051] Among them, the acrylate copolymer is copolymerized by methyl methacrylate and vinyl acetate with a weight ratio of 60:40, and the number average molecular weight is 2.6×10 4 .

[0052] The above-mentioned raw materials are added to the high-speed mixer according to the ratio, and the temperature is raised to 110 ° C and mixed for 10 minutes at a rotating speed of 500 r / min. Then, the extruder is used for extrusion molding. 175°C, 170°C in the metering section, and 170°C in the machine head to obtain a PVC composite material.

Embodiment 2

[0054]

[0055] Among them, the acrylate copolymer is copolymerized by methyl methacrylate and vinyl acetate with a weight ratio of 50:50, and the number average molecular weight is 3.0×10 4 .

[0056] The above-mentioned raw materials are added to the high-speed mixer according to the ratio, and the temperature is raised to 100 ° C and mixed for 10 minutes at a rotating speed of 500 r / min. Then, the extruder is used for extrusion molding. 175°C, 170°C in the metering section, and 170°C in the machine head to obtain a PVC composite material.

Embodiment 3

[0058]

[0059]

[0060] Among them, the acrylate copolymer is copolymerized by methyl methacrylate and vinyl acetate with a weight ratio of 70:30, and the number average molecular weight is 2.8×10 4 .

[0061] The above-mentioned raw materials are added to the high-speed mixer according to the ratio, and the temperature is raised to 100 ° C and mixed for 10 minutes at a rotating speed of 500 r / min. Then, the extruder is used for extrusion molding. 175°C, 170°C in the metering section, and 170°C in the machine head to obtain a PVC composite material.

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Abstract

The invention discloses a flame-retardant PVC composite material for a refrigerator back plate and a preparation method thereof, and relates to the technical field of composite materials, the prepared PVC composite material is high in plasticity, can be used for processing refrigerator back plates of different sizes and shapes, and is good in barrier property and insulating property, and the refrigerator back plate processed by the PVC composite material is high in strength and good in flame retardance. The anti-deformation capability is good when external force is borne; meanwhile, the material has the advantage of high flame retardance, can reach the V-0 level of the UL94 standard, can prevent fire from spreading after a fire disaster occurs, and plays a role in protecting electronic components in the refrigerator; and the consumption of the flame retardant is low, so that the problem that the strength of the refrigerator back plate is greatly reduced due to excessive addition of the flame retardant is solved.

Description

Technical field: [0001] The invention relates to the technical field of composite materials, in particular to a flame-retardant PVC composite material for a refrigerator back panel and a preparation method thereof. Background technique: [0002] When the refrigerator is working normally, the heat in the refrigerator absorbed by the evaporator and the heat generated when the compressor works are dissipated by the condenser located outside the refrigerator. At present, the radiators of refrigerators are designed to be installed on both sides of the refrigerator. When the compressor is working, heat is dissipated through the shells on both sides of the refrigerator. The material of the refrigerator back plate has basically nothing to do with the refrigeration function of the refrigerator, and it will not cause temperature due to heat dissipation failures. rise, causing a spontaneous fire. [0003] In the event of a fire, however, the polyurethane used to insulate most refriger...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/04C08L33/12C08K3/34C08K3/26C08K3/22C08K3/30C08K5/12
CPCC08L27/06C08K2003/265C08K2003/2241C08K2003/3045C08L2205/025C08L2201/02C08L51/04C08L33/12C08K3/34C08K3/26C08K3/22C08K3/2279C08K3/30C08K5/12Y02P20/10
Inventor 汪旭
Owner 汪旭
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