High strength thermoplastic polyurethane solid-solid phase change energy storage material and preparation method thereof

A phase-change energy storage material, thermoplastic polyurethane technology, applied in the field of thermoplastic polyurethane elastomers, can solve the problems of low elongation at break, poor mechanical properties, and limited applications, and achieve excellent mechanical properties, easy operation, and simple preparation methods Effect

Inactive Publication Date: 2016-11-09
DONGGUAN JIXIN POLYMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase change enthalpy of the polyurethane solid-solid phase change material prepared by the above method is relatively high, close to or greater than 100J/g, and its phase change temperature is 40°C-60°C, but its mechani

Method used

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  • High strength thermoplastic polyurethane solid-solid phase change energy storage material and preparation method thereof

Examples

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Example Embodiment

[0046] Example 1

[0047] A thermoplastic polyurethane solid-solid phase change energy storage material, the thermoplastic polyurethane solid-solid phase change energy storage material is prepared from the following raw materials in parts by weight:

[0048]

[0049] Wherein, the number average molecular weight of the polybutylene succinate diol is 8000-8500, and the number average molecular weight of the polyethylene glycol is 7500-8000.

[0050] The modified nano silica particles are γ-glycidyl ether propyl trimethoxysilane modified silica nanoparticles; the particle diameter of the modified nano silica particles is 15-50 nm.

[0051] The chain extender is ethylene glycol.

[0052] The catalyst is dibutyl tin dilaurate.

[0053] The preparation method of the thermoplastic polyurethane solid-solid phase change energy storage material includes the following steps:

[0054] (1) Dehydrate the formulated amount of polybutylene succinate diol and polyethylene glycol at 120°C under vacuum for ...

Example Embodiment

[0058] Example 2

[0059] A thermoplastic polyurethane solid-solid phase change energy storage material, the thermoplastic polyurethane solid-solid phase change energy storage material is prepared from the following raw materials in parts by weight:

[0060]

[0061] Wherein, the number average molecular weight of the polybutylene succinate diol is 7000-7500, and the number average molecular weight of the polyethylene glycol is 6000-6500.

[0062] The modified nano silica particles are γ-glycidyl ether propyl trimethoxysilane modified silica nanoparticles; the modified nano silica particles have a particle size of 50-150 nm.

[0063] The chain extender is 1,4-butanediol and 1,6-hexanediol.

[0064] The catalyst is stannous octoate.

[0065] The preparation method of the thermoplastic polyurethane solid-solid phase change energy storage material includes the following steps:

[0066] (1) Dehydrate the formulated amount of polybutylene succinate diol and polyethylene glycol at 140°C under v...

Example Embodiment

[0070] Example 3

[0071] A thermoplastic polyurethane solid-solid phase change energy storage material, the thermoplastic polyurethane solid-solid phase change energy storage material is prepared from the following raw materials in parts by weight:

[0072]

[0073] Wherein, the number average molecular weight of the polybutylene succinate diol is 7600-8000; the number average molecular weight of the polyethylene glycol is 6700-7200.

[0074] The modified nano silica particles are γ-glycidyl ether propyl trimethoxysilane modified silica nano particles; the modified nano silica particles have a particle size of 200-300 nm.

[0075] The chain extender is ethylene glycol and 1,4-butanediol with a mass ratio of 1:1.

[0076] The catalyst is stannous octoate and zinc octoate.

[0077] The preparation method of the thermoplastic polyurethane solid-solid phase change energy storage material includes the following steps:

[0078] (1) Dehydrate the formulated amount of polybutylene succinate diol...

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Abstract

The invention provides a high strength thermoplastic polyurethane solid-solid phase change energy storage material and a preparation method thereof. The high strength thermoplastic polyurethane solid-solid phase change energy storage material is prepared from 30-42 parts by weight of polybutylene succinate diol, 43-52 parts by weight of polyethylene glycol, 12-23 parts by weight of isophorone diisocyanate, 5-12 parts by weight of hexamethylene diisocyanate, 3-8 parts by weight of a chain extender, 0.05-0.2 parts by weight of a catalyst and 0.01-0.1 parts by weight of modified nanometer silica particles. The number-average molecular weight of the polybutylene succinate diol is in a range of 7000-8500 and the number-average molecular weight of polyethylene glycol is in a range of 6000-8000. Ingredients of the phase change energy storage material produce synergism so that the phase change energy storage material has good mechanical properties, material tensile strength greater than 36MPa and a fracture percentage elongation greater than 921%. The preparation method has simple processes and a wide application range.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polyurethane elastomers, and relates to a high-strength thermoplastic polyurethane solid-solid phase change energy storage material and a preparation method thereof. Background technique [0002] As the world's energy crisis intensifies, improving energy utilization efficiency and developing renewable energy has become an important issue facing mankind. Energy storage materials are materials that store a certain form of energy under specific conditions, and release and utilize them under specific conditions, so they can achieve the goal of consistency between energy supply and people's needs, and achieve energy saving and consumption reduction. effect. Among them, phase change materials (Phase change materials, referred to as PCM) use the property of absorbing or releasing a large amount of heat when a substance undergoes a phase transition to store or release energy. At the same time, it ...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/73C08G18/66C08G18/48C08G18/42C08G18/32C08G18/12C08K9/06C08K3/36C09K5/02
CPCC08G18/755C08G18/12C08G18/4018C08G18/4238C08G18/4833C08G18/6607C08G18/722C08G18/73C08K3/36C08K9/06C08K2201/003C08K2201/011C09K5/02
Inventor 何建雄王一良
Owner DONGGUAN JIXIN POLYMER SCI & TECH
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