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Degradable phase change composite fiber and preparation method thereof

A composite fiber, phase change technology, applied in the chemical characteristics of fibers, rayon manufacturing, conjugated synthetic polymer rayon, etc., can solve the problem of easy overflow of phase change materials, improve energy storage efficiency, and reduce raw material costs. Effect

Inactive Publication Date: 2016-06-08
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a degradable phase change composite fiber and its preparation method to solve the problem that the phase change material in the phase change composite fiber is easy to overflow

Method used

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  • Degradable phase change composite fiber and preparation method thereof
  • Degradable phase change composite fiber and preparation method thereof
  • Degradable phase change composite fiber and preparation method thereof

Examples

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preparation example Construction

[0032] In the preparation of the degradable phase change composite fiber, the steps include:

[0033] Preparation of phase change material sealing agent;

[0034] Mixing the phase change material blocking agent and polyethylene glycol to prepare a suspension;

[0035] The suspension is sent to the spinneret assembly through the conveying pipeline of melt spinning;

[0036] Spinning-grade polylactic acid is fed into the spinneret assembly by a melt-spun screw extruder;

[0037] spinning.

[0038] Use terephthalic acid and ethylene glycol as sealing agents to form a uniform suspension with phase change materials and spray them out from the spinneret hole. By physical means, the uniformly dispersed sealing agent solidifies and seals the phase change materials uniformly to form along the longitudinal direction of the fiber. Uniformly distributed large capsules of phase change materials solve the problem of closure of phase change materials in phase change composite fibers, and ...

Embodiment 1

[0072] Stir terephthalic acid and ethylene glycol with a molar ratio (the ratio of the amount of substances) of 1:1.10 at room temperature, and continuously add them to the polyethylene terephthalate prepolymer in the molten state. React at 255° C. for 2 hours to obtain a phase change material sealing agent. After the phase change material sealing agent is cooled, it is ball-milled in a ball mill for 60 minutes to obtain a granular sealing agent. Add granular blocking agent and nucleating agent nano-titanium dioxide (0.3% of the total mass of blocking agent and polyethylene glycol) into molten polyethylene glycol, and mix evenly at 90°C to obtain a suspension with a concentration of polyethylene glycol 600 of 80%. liquid. The obtained suspension is added to the phase change material storage tank, transported to the metering pump through the delivery pipeline, and quantitatively transported to the spinneret assembly by the metering pump. Spinning-grade polylactic acid is adde...

Embodiment 2

[0074] Stir terephthalic acid and ethylene glycol with a molar ratio (the ratio of the amount of substances) of 1:1.20 at room temperature, and continuously add them to the molten polyethylene terephthalate prepolymer. React at 255° C. for 2 hours to obtain a phase change material sealing agent. After the phase change material sealing agent is cooled, it is ball-milled in a ball mill for 50 minutes to obtain a granular sealing agent. Add granular blocking agent and nucleating agent nano-titanium dioxide (0.2% of the total mass of blocking agent and polyethylene glycol) into molten polyethylene glycol, and mix uniformly at 90°C to obtain a suspension with a concentration of polyethylene glycol 600 of 80%. liquid. The obtained suspension is added to the phase change material storage tank, transported to the metering pump through the delivery pipeline, and quantitatively transported to the spinneret assembly by the metering pump. The mass composite ratio of the suspension to sp...

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Abstract

The invention relates to a degradable phase-change composite fiber and a preparation method thereof. The degradable phase-change composite fiber adopts polyethylene glycol as a phase change material and uses spinning grade polylactic acid as a sea material; the phase-change material sealing agent adopted by the prepared degradable phase-change composite fiber comprises terephthalic acid and ethylene glycol; the preparation method comprises the steps of preparing the sealing agent, mixing the sealing agent and the polyethylene glycol to obtain suspension liquid, and carrying out fused composite spinning on the suspension liquid and the polylactic acid. Terephthalic acid and ethylene glycol, which are used as the sealing agent, are mixed with the phase change material to form uniform suspension liquid, the suspension liquid is sprayed out through a spinneret orifice, the uniformly-dispersed sealing agent is solidified in a physical manner and uniformly seals the phase change material to form a large capsule of the phase change material uniformly distributed longitudinally along fibers, and therefore, the sealing problem of the phase change material in the phase-change composite fiber is solved, and unsealed phase change material cannot be brought into the using link.

Description

technical field [0001] The field of composite fibers of the present invention, in particular, relates to degradable phase-change composite fibers and a preparation method thereof. Background technique [0002] Composite fiber is a chemical fiber made from two or more fiber-forming polymers, or the same polymer with different properties, through composite spinning. of polymers. Using composite fiber manufacturing technology can obtain modified fibers with the characteristics of two polymers, such as three-point composite fibers with cost-effective and conductive properties, and skin-core antistatic fibers. The side-by-side composite fiber with self-crimping performance is a self-eliminating static pie-shaped composite fiber prepared by using two polymers that generate different charges. [0003] With the acceleration of people's exploration of energy-saving and environmentally friendly green carriers, phase change materials control the temperature of the load-carrying syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F1/10
Inventor 董振峰王锐张秀芹朱志国
Owner BEIJING INST OF CLOTHING TECH
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