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Multifunctional phase change composite material and preparation method thereof

A phase change composite material and a multi-functional technology, applied in the field of multi-functional phase change composite materials and their preparation, can solve the problems such as the inability to meet market application requirements, achieve good shaping and anti-leakage effects, simple production process, elasticity and The effect of moderate toughness

Active Publication Date: 2019-03-19
深圳航美新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the existing phase change energy storage materials have many deficiencies in thermal design and thermal management applications, and cannot meet market application requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Accurately weigh 52# refined paraffin wax and expanded graphite with an average particle size of 75 μm according to the mass ratio of 5:2, and the total mass of the two is 1 kg. Put the paraffin into the internal mixer, heat at 70°C, and start stirring at 20r / min to speed up the melting of the paraffin. After the paraffin wax is completely melted, add expanded graphite slowly in 3 times, increase the stirring speed to 40r / min, and stir for 4 minutes until the paraffin wax is completely absorbed by the expanded graphite, and then discharge to obtain graphite phase change powder.

[0054] Add 21.1% of EPDM (ethylene propylene diene monomer), 2.4% of zinc oxide and 0.2% of stearic acid into the internal mixer according to the mass ratio for mixing. The temperature is 70°C, the speed is 30r / min, and the mixing time is 2min. Then add 70% of the above-mentioned graphite phase change powder, and add in 3 times until the graphite is completely eaten, and the mixing time is 3 m...

Embodiment 2

[0061] According to the mass ratio of 6:1, 58# refined paraffin was accurately weighed and mixed with high-expansion graphite with an average particle size of 45 μm to obtain graphite phase change powder. Melting temperature is 75 DEG C, and other processing parameters and operation flow are the same as embodiment 1.

[0062] According to the mass ratio, 21.2% of EPDM, 70% of graphite phase change powder, 1.4% of 1,3-bis(tert-butylperoxyisopropyl)benzene (BIPB), 1.4% of TAIC and 0.5% of HVA- 2 and 7.7% of microcapsule-coated red phosphorus were mixed in turn to prepare the compound compound. The banburying temperature is 75°C, and the starting temperature is 65°C, and other process parameters and operating procedures are the same as in Example 1.

[0063] The hot press vulcanization condition is 170℃*10min, the pressure is 12MPa, and the thickness of the tablet is 0.3~3.0mm. It should be pointed out that other phase-change structural parts with special structures can also be...

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PUM

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Abstract

The invention discloses a multifunctional phase change composite material and a preparation method thereof. The multifunctional phase change composite material contains the following components by mass percentage: 15-35% of EPDM, 40-75% of paraffin, 5-25% of expanded graphite, 5-25% of fire retardant, 0.5-5% of cross-linking agent, 0.01-5% of cross-linking aid, and 0-10% of processing aid; the mass percentage sum of the components is 100%. The phase change energy storage composite material disclosed by the invention has partial features of thermal vulcanized rubber, is moderate in elasticity and toughness, and good in sizing and antiseep effect, and meanwhile has the advantages of high latent heat of phase change, high conductivity coefficient, flame resistance and insulation, is simple inproduction process, and has good application prospect in multiple thermal design and heat management fields including new-energy vehicles, rail traffics, communication base stations, laser equipment,unmanned aerial vehicles and intelligent terminal equipment.

Description

technical field [0001] The invention relates to the field of thermal management materials, in particular to a multifunctional phase-change composite material and a preparation method thereof. Background technique [0002] Phase change material, also known as latent heat storage material, is a functional material that uses the phase change of the material itself to passively absorb or release a large amount of heat from the surrounding environment, thereby achieving the purpose of storing heat and improving energy utilization. Phase change materials are widely used in industries such as aviation, electronics, communications, clothing, construction and lithium batteries. [0003] According to different chemical compositions, phase change materials can be divided into inorganic phase change materials and organic phase change materials. In the low-temperature field below 100 °C, the phase change materials with suitable phase transition points are mostly organic phase change mat...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 黄宏波路华李鹏张洪涛
Owner 深圳航美新材料科技有限公司
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