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Fibers capable of heat storage and temperature adjustment

A technology for heat storage and temperature adjustment and fiber, which is applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc. Low enthalpy and other issues, to achieve good thermal stability, low fiber leakage, and good performance

Inactive Publication Date: 2010-09-29
YINGBAO FIBER TECH RENHUA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new design allows for improved control over how much heat can be stored inside an insulation made up of fibers when they are used at different temperatures. By controlling this amount of heat absorption/release based upon certain factors such as the type of chemicals being added into the fabric itself, the resulting fiber's properties may also vary depending on its use environment. Overall, these improvements make the manufacturing process more efficient while maintaining high quality products.

Problems solved by technology

This technical problem addressed in this patents relates to improving thermal insulators made up of fabrics containing thermoabsorbing/thermal storing fibrils without losing functionality over time caused by leaks between layers. Existing methods involve adding solid particles into the fabric itself, making it hard to clean after usage. There has been developed an innovative way called condensation coatings, where certain substances like paraffins may be added instead of regular alkane hydrocarbons. These new ways allow for better control over how much energy flows inside the fabric while maintaining good moisture management capabilities.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the fiber of the present invention adopts the fusion composite spinning method. This method can well wrap the polymer phase change material as the core or island component inside the fiber, thus effectively preventing the leakage or leakage of the polymer phase change material during use and improving the product quality. Functional stability. Tests show that the weight loss of the fiber is not more than 5% after the fiber of the invention is treated by a Soxhlet extractor with toluene as a solvent for 2 hours, and has good stability of anti-leakage function.

[0018] The preparation method of fiber of the present invention is basically the same as prior art, mainly comprises the following steps:

[0019] (1) Homopolymers or copolymers of the polyalkyl (meth)acrylates or polyitaconic acid mono- and di-alkyl esters synthesized by oneself or bought on the market by common known technology, or with a mass ratio of 20 to 20 The 80:80-20 homopolym...

Embodiment 1

[0030] The random copolymer of myristyl acrylate and hexadecyl acrylate (average degree of polymerization 5) with a molar ratio of 1:4 is used as the core component of the fiber, and polycaprolactam (intrinsic viscosity 0.73) is used as the sheath component of the fiber. After all the components are dried until the moisture content is lower than 100ppm, the weight ratio of the core and the sheath is controlled to be 2:3, melted and composite spun at 250°C to make as-spun yarn, and further processed into elastic yarn; the fineness of the finished fiber is 150dtex / 78f, The tensile breaking strength is 3.1cN / dtex, and the breaking elongation is 42%.

[0031] The fiber has an endothermic temperature of 32°C, an endothermic heat of 55J / g, an exothermic temperature of 23°C, an exothermic heat of 59J / g, and a heat-resistant temperature of 273°C. It is extracted or treated by a Soxhlet extractor using toluene as a solvent. , the fiber weight loss was 4%.

Embodiment 2

[0033] The random copolymer of myristyl acrylate and hexadecyl acrylate with a molar ratio of 4:1 (average degree of polymerization 102) is used as the island component of the fiber, and polypropylene (melt index 28g / 10min) is used as the sea component of the fiber After the two components are dried until the moisture content is lower than 100ppm, the weight ratio of island and sea is controlled to be 2:3, melted and composite spun at 230°C to make as-spun silk, further bundled, drawn, crimped, dried and shaped, and cut. Make short fibers, the fineness of the finished fibers is 2.1dtex, the tensile breaking strength is 3.3cN / dtex, and the elongation at break is 38%.

[0034] The fiber has an endothermic temperature of 26°C, an endothermic heat of 45J / g, an exothermic temperature of 18°C, an exothermic heat of 49J / g, and a heat-resistant temperature of 258°C. The weight loss is 4%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to fibers capable of heat storage and temperature adjustment. The fiber prepared by using the composite melt-spinning method comprises the following components by weight percent: 20% to 60% of polymer-type phase-change materials as a core component or an island component and 80% to 40% of fiber-forming polymers as a skin component or a sea component, wherein the polymer-type phase-change materials comprise the homopolymer or copolymer of alkyl acrylate, alkyl methacrylate and monoalkyl/dualalkyl itaconate or the copolymer of the homopolymer thereof, and is characterized in that the normal alkyl capable of carrying out the solid-liquid and liquid-solid phase transition and further achieving the effect of energy storage is fixed on the main chain of the polymer by the covalent bond; and the fiber-forming polymer comprises at least one selected from polyethylene, polypropylene, polyamide, co-polyamide, co-polyester and co-polyacrylonitrile. The weight loss of the fiber taking methylbenzene as solvent is not higher than 5% after being subjected to the treatment of a Soxhlet extractor for 2 hours.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Owner YINGBAO FIBER TECH RENHUA
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