Phase change energy storage thermoplastic composite material and preparation method thereof

A composite material and phase change energy storage technology, which is applied in the field of thermoplastic elastomers, can solve the problems of whether the capsule can remain intact without further research, cannot flow, waste water resources, etc., and achieve good shape retention and elongation at break High, leakage rate reduction effect

Active Publication Date: 2012-09-19
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned methods for preparing microcapsule phase-change materials are all carried out by chemical synthesis, and the obtained product must be filtered, washed, and dried to complete, and the reaction time needs to be 1 to 5 hours. Environmental pollution and other issues
In addition, there is no further research on whether the microcapsules can be kept intact during the subsequent processing of the microcapsules for the preparation of building materials or other decorative materials
[0007] In Chinese patent 02133748.9, Yu Qiang of Yunnan Weihao Company used crystalline polyolefin as the matrix, pre-grafted vinyl silane onto the polyolefin matrix, and then dissolved the graft in paraffin-based phase change materials to form There are dispersions, and then cross-linked in hot water. The phase change material prepared by this method is a thermosetting material, which cannot flow, and does not have the characteristics of thermoplastic materials that can be processed repeatedly.
[0008] To sum up, the existing phase-change energy storage thermoplastic composites have various deficiencies and fail to meet the needs of production and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mix polypropylene 25%, EPDM rubber 43%, SP2045 crosslinking agent 5%, 58# paraffin 25%, antioxidant (1010) 0.2%, zinc oxide 1.3%, stearic acid 0.5% by weight Uniform, one-step dynamic vulcanization in twin-screw extrusion to prepare phase-change energy-storage thermoplastic composites. The temperature setting of the heating zone of the twin-screw extruder is: 160°C, 170°C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C (the order is from the feed port to the machine head) , speed 500rpm.

Embodiment 2

[0048] Propylene 18%, EPDM rubber 25%, 58# paraffin 50%, 1790 antioxidant 0.1%, 168 antioxidant 0.1%, zinc oxide 1.3%, stearic acid 0.5%, cross-linking assistant agent (SnCl 2 ) 2% were mixed evenly, and the premix A was prepared by melting and kneading with an internal mixer at a temperature of 180-200° C. and a rotation speed of 30 rpm.

[0049] Mix the above premix A with 3% phenolic resin SP1045 evenly, and use twin-screw extrusion for dynamic vulcanization to prepare phase-change energy storage thermoplastic composite materials. The temperature in the heating zone of the twin-screw extruder is set at: 160°C, °C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C (the order is from the feeding port to the machine head), the speed is 500rpm.

Embodiment 3

[0051] According to the weight, mix 5 kg of polypropylene, 13.8 kg of EPDM rubber, 70 kg of 58# paraffin, 0.2 kg of antioxidant (1790), 0.8 kg of zinc oxide, and 0.2 kg of stearic acid. Melt kneading at 200°C to prepare reaction one-step material B1.

[0052] Mix 2 kg of EPDM rubber with cross-linking aid (SnCl 2 ) 2 kg was mixed evenly, and the accelerator masterbatch B2 was prepared by melting and mixing equipment.

[0053] Mix 3 kg of EPDM rubber and 3 kg of SP1045 cross-linking agent evenly, and prepare cross-linking agent masterbatch B3 by using melt mixing equipment.

[0054] Mix 90% of the reaction one-step material B1, 4% of the accelerator masterbatch B2 and 6% of the crosslinker masterbatch B3 in a weight ratio, and use twin-screw extrusion for dynamic vulcanization to prepare a phase-change energy storage thermoplastic composite material, The temperature setting of the heating zone of the twin-screw extruder is: 160°C, 170°C, 180°C, 180°C, 180°C, 180°C, 180°C,...

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Abstract

The invention discloses a phase change energy storage thermoplastic composite material, which comprises the following components in percentage by weight: 5 to 30 percent of polypropylene, 10 to 40 percent of ethylene-propylene-diene monomer (EPDM), 20 to 75 percent of paraffin, 0.5 to 10 percent of cross-linking agent, 0.01 to 2 percent of antioxidant, 0.01 to 10 percent of processing aid and 0 to 10 percent of crosslinking aid. The components are subjected to dynamic vulcanization in one step in melting mixing equipment to obtain the phase change energy storage thermoplastic composite material. The phase change energy storage thermoplastic composite material has the processing characteristics of thermoplastic plastics, and has high breaking elongation, moderate hardness and flexibility; and the paraffin is coated in the crosslinked EPDM to form microcapsules, and the phase change energy storage thermoplastic composite material is excellent in shape retaining performance and low in percolation ratio and has the better application prospects in fields of construction, chemical engineering, energy and the like.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic elastomers, and in particular relates to a phase-change energy storage thermoplastic composite material and a preparation method thereof. Background technique [0002] Phase Change Materials (PCMs for short) are materials that use the endothermic and exothermic effects of substances during the phase change process to store thermal energy and control temperature. Advantages, it has begun to be applied in industries such as aviation, electronics, clothing and construction, and is of great significance for alleviating the energy crisis and improving energy utilization efficiency. [0003] According to the chemical composition of the material, PCMs can be divided into inorganic phase change materials, organic phase change materials, polymers and their composite phase change materials. Inorganic phase change materials mainly include crystalline hydrated salts, molten salts, and metal alloys; org...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/12C08J3/24C09K5/06
Inventor 阳范文肖鹏叶南飚陶四平何浏炜杨志骅
Owner KINGFA SCI & TECH CO LTD
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