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A water-repellent and warm-keeping floc and its preparation method

A flake and water-repellent finishing technology, applied in rayon manufacturing, hollow filament manufacturing, and liquid repellent fibers, etc., can solve the problems of difficult processing, serious static problems, limited water-repellent effect, etc. The effect of good water resistance and high warmth retention

Active Publication Date: 2021-11-02
THE QUARTERMASTER RES INST OF THE GENERAL LOGISTICS DEPT OF THE CPLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two methods of preparing water-repellent wadding. The first type is to carry out water-repellent finishing on the raw material fiber, and process the water-repellent fiber into wadding. However, due to the water-repellent fiber, the static electricity problem is serious, and the processing is difficult; the second is The category is to post-finish the flakes as a whole, but the water-repellent effect obtained by the water-repellent post-finish is limited, and the complete water-repellent effect cannot be achieved

Method used

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  • A water-repellent and warm-keeping floc and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] 1. Preparation of fiber nano water-repellent finishing agent: add 1% of KH-570 silane coupling agent (relative to the mass percentage of silicon dioxide) in the ethanol solution to treat nano-zinc dioxide (particle diameter 200nm) and nano-titanium dioxide (particle size) respectively. diameter of 200nm) for surface water-repellent modification, drying and grinding. Add 1% of nano-zinc dioxide and 1% of nano-titanium dioxide (particle size 200nm) modified by surface water repellency into 40% of propyltrimethoxysilane, mix well, and then add D40 solvent to make up the balance.

[0075] 2. Water-repellent finishing of thick-diameter fibers: Soak elastic fibers, hollow polyester fibers (3.33dtex), hollow polyester fibers (6.64dtex), and low-melting-point bonding fibers in fiber nano-water-repellent finishing agents for 20 minutes, then dry A water-repellent thick-diameter fiber was obtained.

[0076] 3. Preparation of thermal wadding: the fiber content and mass percentage...

Embodiment 2

[0080] 1. Preparation of fiber nano water-repellent finishing agent: add 1% of KH-570 silane coupling agent to the ethanol solution to modify the surface of nano-zinc dioxide (particle size 150nm) and nano-titanium dioxide (particle size 150nm), respectively, Dried and ground. Add 1% of nano-zinc dioxide and 2% of nano-titanium dioxide modified by surface water repellency to 45% of octyltrimethoxysilane, mix well, and then add D60 to supplement the balance.

[0081] 2. Water-repellent finishing of large-diameter fibers: soak elastic fibers, hollow polyester fibers, and low-melting-point bonding fibers in fiber nano-water-repellent finishing agents for 20 minutes, and dry to obtain water-repellent large-diameter fibers.

[0082] 3. Preparation of thermal wadding: the fiber content and mass percentage of thermal wadding are composed of: 20% water-repellent elastic fiber, 12.5% ​​water-repellent hollow polyester fiber (3.33dtex), 12.5% ​​water-repellent hollow polyester fiber (6....

Embodiment 3

[0086] 1. Preparation of fiber nano water-repellent finishing agent: Add 1% of KH-570 silane coupling agent to the ethanol solution to modify the surface of nano-zinc dioxide (particle size 50nm) and nano-titanium dioxide (particle size 50nm), respectively, Dried and ground. Add 2% of nano-zinc dioxide and 1% of nano-titanium dioxide modified by surface water repellency to 50% of octyltriethoxysilane, mix well, and then add D70 to supplement the balance.

[0087] 2. Water-repellent finishing of thick-diameter fibers: Soak elastic fibers, hollow polyester fibers, and low-melting-point bonding fibers in fiber nano-water-repellent finishing agents for 20 minutes, and dry them for later use.

[0088] 3. Preparation of thermal wadding: the fiber content and mass percentage of thermal wadding are composed of: 30% water-repellent elastic fiber, 7.5% water-repellent hollow polyester fiber (3.33dtex), 7.5% water-repellent hollow polyester fiber (6.64dtex) , water-repellent low-melting...

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Abstract

The invention discloses a water-repellent and warm-keeping floc and a preparation method thereof. In the present invention, nanometer water-repellent finishing is carried out on thick-diameter fibers, while fine-diameter fibers are not subjected to water-repellent finishing, because fine fibers are difficult to comb after water-repellent finishing, causing carding difficulties; then the thick-diameter fibers and thin-diameter fibers after water-repellent finishing Comb into flakes according to a certain ratio, and then perform nano water-repellent finishing. The invention adopts the method of water-repellent finishing of fiber and water-repellent finishing of wadding, and the prepared wadding can achieve better water-repelling effect, and at the same time, can improve the heat-retaining effect of the wadding.

Description

technical field [0001] The invention relates to a thermal insulation wadding and a preparation method thereof, in particular to a water-repellent thermal insulation wadding and a preparation method thereof. Background technique [0002] Flakes have the advantages of light weight and strong warmth retention, and are commonly used as thermal insulation filling materials in cold environments. However, some operators in outdoor places, such as underwater workers, military personnel on duty, traffic police, engineering repair personnel, sanitation workers, outdoor telemotion enthusiasts, etc., will face the test of extreme weather such as cold and wet operations or sudden rain and snow. . Once the flakes enter the water, on the one hand, the flakes will become heavier due to a large amount of water absorption, which will affect the work of the workers; on the other hand, because the thermal conductivity of water is more than 10 times that of polymer materials, it will cause a ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/541D04H1/542D04H1/435D04H3/011D04H3/153D04H5/06D01D5/24D01D5/253D06M13/513D06M11/79D06M11/46D06M11/44D06M101/32
CPCD01D5/24D01D5/253D04H1/435D04H1/541D04H1/542D04H3/011D04H3/153D04H5/06D06M11/44D06M11/46D06M11/79D06M13/513D06M2101/32D06M2200/12D10B2401/021D10B2401/16
Inventor 张华冯新星李茂辉
Owner THE QUARTERMASTER RES INST OF THE GENERAL LOGISTICS DEPT OF THE CPLA
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