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Solid-solid phase change composite fiber with skin-core structure and online crosslinking of core layer and preparation method thereof

A skin-core structure, composite fiber technology, applied in fiber processing, fiber chemical characteristics, heat exchange materials, etc., can solve the problems of easy leakage, small phase change enthalpy, difficult processing of solid-solid phase change fibers, etc. The effect of low cost, high crystallization enthalpy, and easy industrial production

Active Publication Date: 2018-02-13
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a solid-solid phase change composite fiber with a skin-core structure and online cross-linking of the core layer and the solid-solid phase change composite fiber to solve the problems in the prior art that the solid-solid phase change fiber is difficult to process, easy to leak, and has a small phase change enthalpy. Preparation method of composite fiber

Method used

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  • Solid-solid phase change composite fiber with skin-core structure and online crosslinking of core layer and preparation method thereof
  • Solid-solid phase change composite fiber with skin-core structure and online crosslinking of core layer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] Preparation of core phase change material: heat allyl polyethylene glycol with a molecular weight of 2400 to 70°C to melt, add equimolar triallyl isocyanurate and ground initiator BPO, BPO accounts for The total mass of the above-mentioned raw materials is 3%, and it is mixed evenly under high-speed stirring.

[0028] Preparation of cortical sodium alginate spinning solution: Take a certain amount of sodium alginate and water to make a 3% solution, and then vacuum defoam for 4 hours.

[0029] Preparation of composite fiber: put the phase change material melt prepared by the above method into the core spinning tank, put the sodium alginate solution into the cortex spinning tank, and put the cortex and core stock solution into the composite spinneret, and spin The board is extruded into a coagulation bath containing 3% calcium chloride, and the fiber is formed under the action of the coagulation bath, and the formed fiber is heat-treated at 120°C for 80s, so that the core...

Embodiment 2

[0032] Preparation of phase change material for the core layer: heat allyl polyethylene glycol with a molecular weight of 2400 to 65°C to melt, add triallyl isocyanurate with a molar ratio of 1:2 and ground mass 4% initiator BPO, mix it evenly under high-speed stirring.

[0033] Preparation of cortex sodium alginate spinning solution: Take a certain amount of sodium alginate and water to make a 4% solution, and then vacuum defoam for 5 hours.

[0034] Preparation of composite fiber: put the phase change material melt prepared by the above method into the core spinning tank, put the sodium alginate solution into the cortex spinning tank, and put the cortex and core stock solution into the composite spinneret, and spin The board is extruded into a coagulation bath containing 5% calcium chloride, and the fiber is formed under the action of the coagulation bath, and the formed fiber is heat-treated at 100°C for 60s, so that the core layer material undergoes a cross-linking reactio...

Embodiment 3

[0036] Preparation of core layer phase change material: heat allyl polyethylene glycol with a molecular weight of 2400 to 80°C to melt, add triallyl isocyanurate with a molar ratio of 1:3 and ground mass 5% initiator BPO, mix it evenly under high-speed stirring.

[0037] Preparation of cortex sodium alginate spinning solution: Take a certain amount of sodium alginate and water to make a 5% solution, and then perform vacuum defoaming for 6 hours.

[0038] Preparation of composite fiber: put the phase change material melt prepared by the above method into the core spinning tank, put the sodium alginate solution into the cortex spinning tank, and put the cortex and core stock solution into the composite spinneret, and spin The board is extruded into a coagulation bath containing 4% calcium chloride, and the fiber is formed under the action of the coagulation bath, and the formed fiber is subjected to 110S heat treatment at 120°C, so that the core layer material undergoes a cross-...

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Abstract

The invention relates to the technical field of phase-change energy storage materials, and in particular relates to a solid-solid phase-change composite fiber with a skin-core structure and an online cross-linked core layer and a preparation method of the solid-solid phase-change composite fiber. With alginate as a skin layer, and allyl polyethylene glycol, triallyl isocyanurate and an initiator as a core layer, the composite fiber with the skin-core structure is obtained by a wet spinning technique, thermal treatment is carried out in the fiber post-processing process, and then the core layer is subjected to cross-linking reaction to obtain the composite fiber with the solid-solid phase-change material of the cross-linked structure as the core layer and the alginate as the skin layer. The fiber is good in stability, high in crystalline enthalpy and simple in preparation method and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of phase-change energy storage materials, in particular to a solid-solid phase-change composite fiber with a skin-core structure and an online crosslinked core layer and a preparation method for the composite fiber. Background technique [0002] Phase change materials (PCMs) refer to functional materials that can store or release thermal energy under the drive of ambient temperature while keeping their own temperature unchanged. In recent years, the application scope of PCMs has been continuously expanding, and has been applied in the fields of solar energy utilization, waste heat recovery, agricultural greenhouses, intelligent air-conditioned buildings, clothing insulation, constant temperature protection of electronic devices, energy storage cookers, and military camouflage. Usually, PCMs are difficult to use directly, and need to be packaged, blended, or modified to meet practical requirements. Common pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01F8/10D01D5/34D01D5/06D01D10/02C09K5/02
CPCC09K5/02D01D5/06D01D5/34D01D10/02D01F8/10D01F8/18
Inventor 郭静巩学勇安庆大管福成李圣林黄学淋王迪
Owner DALIAN POLYTECHNIC UNIVERSITY
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