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Flame-retardant wood-plastic phase change composite material

A phase-change composite material and phase-change material technology, which are applied in the field of flame-retardant wood-plastic phase-change energy storage composite materials and their powder, particle and sheet products, and can solve the problems that do not involve flame-retardant properties, limitations, wood-plastic phase change, etc. Problems such as less research on variable composite materials

Inactive Publication Date: 2017-09-05
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with publication number CN104262753A discloses a preparation method of a wood-plastic phase change energy storage material, but the content of the invention does not involve flame retardancy, which will be limited in the process of marketization
[0007] At present, there are few researches on wood-plastic phase change composites.
However, the preparation of wood-plastic phase change composite materials with good formability and excellent flame retardancy has not yet seen such a technology disclosed in the prior art.

Method used

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  • Flame-retardant wood-plastic phase change composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, 3.5kg dry straw debris raw material and 1.2kg melamine-pentaerythritol-ammonium polyphosphate (by mass ratio 1:1.2:1) and 0.05kg nanometer montmorillonite are mixed, then the mixture is mixed with 2kg polyethylene, 0.2kg of maleic anhydride grafted polyethylene, 2.6kg of methyl myristate, 0.1kg of expanded graphite, and 0.35kg of porous silica were mixed in a high-speed mixer to 80°C. After cooling, it is processed and formed at 160°C by using a compression molding process to obtain a flame-retardant wood-plastic phase change composite material. It can pass the national flame retardant standard test (GB / T8626 and GB 8624-2012), the thermal conductivity measured by the laser thermal conductivity meter is 0.35W / mK, the melting point measured by the differential scanning calorimeter is 15.3°C, and the phase change enthalpy is 50.7kJ / kg.

Embodiment 2

[0029] Embodiment 2, after fully mixing the dry 3kg 40-purpose poplar wood raw material and 3kg paraffin, add 0.6kg decabromodiphenyl ether and antimony trioxide mixture, 3kg polyvinyl chloride, 0.1 polypropylene, 0.04kg plasticizer, 0.02kg of heat stabilizer, 0.04kg of anti-impact agent, and 0.2kg of ethylene acrylic acid copolymer were mixed in a high-speed mixer to 60°C. It is molded at 180°C by extrusion molding technology to obtain a flame-retardant wood-plastic phase change composite material, which can pass the national flame-retardant standard test (GB / T8626 and GB 8624-2012), and the thermal conductivity measured by the laser thermal conductivity meter is 0.32 W / mK, the melting point measured by differential scanning calorimeter is 30°C, and the phase change enthalpy is 35.2kJ / kg.

Embodiment 3

[0030] Example 3: After thoroughly mixing 2 kg of dried wood fiber and 2 kg of stearyl alcohol at 80° C., 0.1 kg of silane coupling agent was added to treat the mixture. Then add 1kg expandable graphite, 0.5kg polyphosphate, 4kg polyvinyl chloride, 0.1kg white carbon black, 0.03kg plasticizer, 0.03kg heat stabilizer, 0.04kg antioxidant, 0.2kg acrylate copolymer, mix Even after. Using extrusion molding process and molding at 185°C, the flame-retardant wood-plastic phase change composite material can be obtained, which can pass the national flame-retardant standard test (GB / T8626 and GB8624-2012), and the thermal conductivity measured by the laser thermal conductivity meter is 0.75 W / mK, the melting point measured by differential scanning calorimetry is 55.3°C, and the phase change enthalpy is 32.3kJ / kg.

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Abstract

The invention discloses a flame-retardant wood-plastic phase change composite material. The flame-retardant wood-plastic phase change composite material is prepared from the following components (mass percentage): 20 to 50 of phase change materials, 20 to 50 of supporting materials, 15 to 50 of wood raw materials, 5 to 20 of flame retardant and synergist, 5 to 10 of porous materials, 2 to 5 of compatibilizer, and 1 to 8 of other functional additives. The wood-plastic phase change composite material has both the comfort of a wood floor and the temperature control ability of the phase change materials, and has the advantages of good formability, excellent flame-retardant performance and the like.

Description

technical field [0001] The invention relates to a flame-retardant wood-plastic phase-change energy storage composite material and its powder, granule and plate products, belonging to the field of building materials. [0002] technical background [0003] With the continuous improvement of people's attention to environmental resources, the application of wood-plastic composite materials in the field of construction has attracted the attention of the government and the public. Wood-plastic composite material is a modified thermoplastic material filled and reinforced with wood fiber or plant fiber. It has the properties of wood and plastic. It is formed into profiles, materials or other products by hot pressing, extrusion or injection molding to replace wood and plastic. It has the advantages of strong plasticity, no cracks, waterproof, moisture-proof, anti-corrosion, mildew-proof and good processing performance. The phase change material can store and release a large amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L51/06C08L91/06C08L27/06C08L23/12C08L23/08C08L33/08C08L85/02C08L53/02C08K13/04C08K7/24C08K7/26C08K5/3492C08K5/053C08K3/32C08J9/04C09K5/06
CPCC08L97/02C08J9/04C08J2327/06C08J2497/02C08K2003/026C08K2003/323C08K2201/011C08K2201/014C08L27/06C08L91/06C08L2201/02C08L2203/14C08L2205/03C08L2205/035C08L2205/08C08L2205/16C09K5/063C08L23/06C08L51/06C08K13/04C08K7/24C08K7/26C08K5/34922C08K5/053C08K3/32C08L23/12C08L23/0869C08K13/02C08K5/06C08K3/2279C08L33/08C08L85/02C08K3/36C08L53/025C08K3/02
Inventor 邹如强赵晓娜姚锐敏
Owner PEKING UNIV
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