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Preparing method of efficient radiating cooling fiber

A fiber and high-efficiency technology, which is applied in the field of preparation of high-efficiency radiation cooling fibers, can solve the problems of performance degradation, fabric air permeability decrease, cooling function impact, etc., and achieve good radiation cooling performance, avoid large drops, and good reflectivity.

Active Publication Date: 2020-08-25
杭州逸暻化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this multi-layer coating structure can reflect sunlight and heat, the coating also prevents the passage of infrared radiation from the human body, and a certain layer Damage to the coating often leads to a sharp decline in performance, which has a certain impact on the cooling function; at the same time, the use of fabric coating method will make the monofilaments in each bundle of fibers bond to each other, resulting in a decrease in fabric air permeability, resulting in stuffy sense, affecting the wearing comfort of the fabric

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for high-efficiency radiation cooling fibers, comprising the steps of:

[0034] (1) Polyethylene terephthalate slices are melted through a screw extruder to obtain a polyester melt, and the polyester melt is sent into the spinneret by a metering pump with a pump supply rate of 30g / min for extrusion molding Post-blowing and cooling to obtain nascent fibers;

[0035] (2) As-spun fibers are provided with a cylindrical spraying device with a nozzle on the top and a suction hole connected to an external negative pressure device at the bottom, and carry out continuous spraying modification with modified slurry in a mist-like manner, and the spraying amount is 2g / min; In terms of mass fraction, the modified slurry includes 70% polyacrylate emulsion and 30% core-shell structure radiation cooling particles. The core of the core-shell structure radiation cooling particles is nano-silver and the shell is BaSnO 3 ;

[0036] The preparation method of the core...

Embodiment 2

[0043] A preparation method for high-efficiency radiation cooling fibers, comprising the steps of:

[0044] (1) Polyethylene terephthalate slices are melted through a screw extruder to obtain a polyester melt, and the polyester melt is sent into the spinneret by a metering pump with a pump supply rate of 30g / min for extrusion molding Post-blowing and cooling to obtain nascent fibers;

[0045] (2) As-spun fiber passes through a cylindrical spraying device with a nozzle on the top and a suction hole connected to an external negative pressure device at the bottom, and continuously sprays and modifies with modified slurry in a mist-like manner, and the spraying amount is 0.3g / min; In terms of mass fraction, the modified slurry includes 50% polyacrylate emulsion and 50% core-shell structure radiation cooling particles, the core of the core-shell structure radiation cooling particles is nano-silver, and the shell is BaSnO 3 ;

[0046] The preparation method of the core-shell stru...

Embodiment 3

[0053] A preparation method for high-efficiency radiation cooling fibers, comprising the steps of:

[0054] (1) Polyethylene terephthalate slices are melted through a screw extruder to obtain a polyester melt, and the polyester melt is sent into the spinneret by a metering pump with a pump supply rate of 30g / min for extrusion molding Post-blowing and cooling to obtain nascent fibers;

[0055] (2) As-spun fibers are provided with a cylindrical spraying device with a nozzle on the top and a suction hole connected to an external negative pressure device at the bottom, and carry out continuous spraying modification with modified slurry in a mist mode, and the spraying amount is 3g / min; in terms of mass fraction, the modified slurry includes 90% polyacrylate emulsion and 10% core-shell structure radiation cooling particles, the core of the core-shell structure radiation cooling particles is nano-copper, and the shell is BaSnO 3 ;

[0056] The preparation method of the core-shell...

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Abstract

The invention relates to the technical field of functional fiber machining, and discloses a preparing method of efficient radiating cooling fiber. The method comprises the steps that firstly, polymermelt is extruded and formed and then cooled to obtain nascent fiber; secondly, the nascent fiber is subjected to spraying modification through modifying pulp, the modifying pump comprises, by mass percent, 50 to 90% of polyacrylate emulsion and 10 to 50% of core-shell structure radiation cooling particles, inner cores of the core-shell structure radiation cooling particles are heat reflection particles, and shell layers are transmitting radiation layers; thirdly, the nascent fiber obtained after spraying modifying is oiled and then enters a hot air spinning shaft to be subjected to spinning; and fifthly, after spinning, through stretching and winding, the efficient radiating cooling fiber is obtained. Human body radiation far infrared outward radiation by the shell layers of the core-shellstructure radiation cooling particles and exterior visible and near-infrared light reflection by the inner cores are combined, and fabric formed through fiber spinning can achieve the efficient radiation cooling effect.

Description

technical field [0001] The invention relates to the technical field of functional fiber processing, in particular to a preparation method of high-efficiency radiation cooling fiber. Background technique [0002] Radiation cooling is a physical mechanism for ground objects to transfer heat to outer space through infrared atmospheric windows, thereby reducing their own temperature. Radiation cooling can achieve the purpose of cooling without consuming other energy sources, which can effectively reduce the use of air conditioners and power consumption, and help reduce the emission of polluting gases. At present, radiation cooling has been gradually tried to be applied in the field of textiles, so that textiles can play an efficient radiation self-cooling function under sunlight, thereby reducing the surface temperature of the human body. Textiles with radiation cooling function need to have the following characteristics: first, the absorption of sunlight energy is small, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M11/83D06M11/46D01F11/08D01F6/62D01D10/02D01D5/12D06M101/32
CPCD06M15/263D06M11/83D06M11/46D01F11/08D01F6/62D01D10/02D01D5/12D06M2101/32
Inventor 黄家鹏汤廉何宁艳徐锦龙
Owner 杭州逸暻化纤有限公司