Anti-static down and duvets

Abstract

The present invention provides an antistatic down and a duvet. The antistatic down is prepared by mixing down with conductively modified cotton fibers at a mass ratio of 1:(0.1-0.5). The antistatic down obtained by the present invention can be used in duvets. The antistatic down has good antistatic properties and can be washed multiple times with water or detergent, with the antistatic effect remaining well after washing. Furthermore, the antistatic effect of the present invention does not affect the appearance of the down.

Description

Technical Field

[0001] The present invention relates to the technical field of down processing, in particular to an anti-static down and a down quilt. Background Art

[0002] Down quilts are widely used in various thermal insulation products. Due to the lightness, fluffiness and excellent thermal insulation properties of down, they are widely praised by users. Like other fibers, down will also have the problem of static electricity accumulation during use. Therefore, improving the anti-static performance of down products is a recognized urgent need.

[0003] The technical solution for anti-static fabric thermal insulation products is relatively simple. The corresponding anti-static requirements can be met by attaching antistatic agents on the surface of the fabric. However, down products are relatively special. Their thermal insulation performance relies on their unique fluffy structure. Although antistatic agents can be attached to their surface, the addition of antistatic agents will significantly reduce the fluffy performance of the down, thereby reducing its thermal insulation performance. The attachment of antistatic agents will significantly increase their unit volume weight. At the same time, the attachment of antistatic agents will fall off during washing, thereby losing the antistatic effect.

[0004] In view of this, how to improve the anti-static performance of down without affecting its fluffy and warm properties has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] In view of this, the present invention proposes a down with antistatic properties and a down quilt having the down, aiming to improve the antistatic properties of the down while not affecting the fluffiness and warmth retention of the down.

[0006] The technical solution of the present invention is achieved as follows: the present invention provides an anti-static down, which includes down and cotton fiber with a conductive surface modification, and the down and the cotton fiber with a conductive surface modification are mixed in a mass ratio of 1: (0.1-0.5).

[0007] By adding conductive modified cotton fibers, down with poorer conductivity can be connected, thereby improving the conductivity between down. The entire down can be connected through the conductive modified cotton fibers to achieve static discharge. At the same time, the down has not been processed, retaining its good appearance and thermal insulation properties.

[0008] In some embodiments, the method for preparing cotton fibers with conductive surface modification includes:

[0009] Soak the cotton fiber in an oxidant solution for activation treatment for 10-30 minutes;

[0010] The activated cotton fibers are immersed in a pyrrole monomer solution for 1-3 hours, and then dried to obtain the cotton fibers with conductive surface modification.

[0011] First, the cotton fiber surface is activated by an oxidant solution. At the same time, the attached oxidant solution acts as a reactive component to provide reaction conditions for the polymerization of pyrrole monomers. After polymerization, the pyrrole monomers react in situ on the cotton fiber surface to form a polypyrrole layer with a certain conductivity. The polypyrrole partially or completely covers the cotton fiber to achieve the modification purpose.

[0012] In some embodiments, the oxidant solution is an aqueous solution of at least one of persulfate, ferric chloride, ferric nitrate, ferric sulfate, and hydrogen peroxide.

[0013] In some embodiments, the pyrrole monomer solution is an aqueous solution of pyrrole.

[0014] In some embodiments, the surface-conductively modified cotton fiber is subjected to heat treatment, and the heat treatment method comprises heating the surface-conductively modified cotton fiber under hot air at 230-260° C. for 1-3 seconds.

[0015] Since down is relatively fluffy and smooth, and the surface structure of cotton fibers is relatively smooth, the hanging performance of cotton fibers and down is poor, which also leads to the fact that the static electricity accumulated on the surface of the down may not be well transferred to the surface of the cotton fibers. In order to overcome this problem, the cotton fibers with polypyrrole attached to the surface are heat-treated. Due to the polypyrrole attached to the surface, the stress on the inner and outer surfaces of the cotton fibers is different when heated, and curling is very likely to occur. There are many hook-like structures on the surface of down. Therefore, the hook-like structure is combined with the curling to improve the hanging performance of the cotton fibers and down after heat treatment, thereby further improving the bonding stability and conductivity between the two.

[0016] In some embodiments, before the cotton fibers with conductive surface modification are subjected to heat treatment, the cotton fibers are combed to obtain a plurality of cotton fibers arranged in parallel or nearly parallel order. During the heat treatment, the middle and both ends of the combed cotton fibers are heated.

[0017] Through the combing process, the heating position of the cotton fiber can be adjusted. The directionally controlled shape of the cotton fiber is conducive to maintaining the fluffiness of the down and the hanging performance between the down and the cotton fiber, as well as the stability of the hanging structure after washing and rubbing.

[0018] On the other hand, the present invention further provides a down quilt, the inner side of which is wrapped with the above-mentioned antistatic down.

[0019] In some embodiments, the surface of the duvet cover is coated with an antistatic agent or is treated with an antistatic agent.

[0020] The antistatic down and down quilt of the present invention have the following beneficial effects compared with the prior art:

[0021] The antistatic down provided by the present invention adopts the method of blending conductive fibers, which improves the antistatic performance of the down and greatly enhances its antistatic effect. The obtained down has good washing resistance and can avoid the problem of poor washing resistance caused by conventional surface-coated down. At the same time, the down obtained by the present invention can retain good appearance performance. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Unless otherwise defined, all technical terms and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. If definitions set forth in this section are contrary to or otherwise inconsistent with definitions set forth in the patents, patent applications, published patent applications, and other publications incorporated herein by reference, the definitions listed in this section take precedence over the definitions incorporated herein by reference.

[0024] Example 1

[0025] Preparation of conductive modified cotton fiber:

[0026] Prepare 5L of 10% sodium persulfate aqueous solution, take 100g of cotton fiber and soak it in the sodium persulfate aqueous solution for 10 minutes to obtain activated cotton fiber;

[0027] A pyrrole aqueous solution with a mass concentration of 5% is prepared, and the activated cotton fiber is not dried. The activated cotton fiber with the sodium persulfate aqueous solution is kept immersed in the pyrrole aqueous solution, and the soaking reaction is carried out for 1 hour. After being fished out, the cotton fiber is dried at 30-40° C. to obtain a cotton fiber with a conductive surface modification.

[0028] Preparation of anti-static down:

[0029] 100g of down that has been washed and dried is mixed with 10g of cotton fiber whose surface has been conductively modified, and the mixture is added into an opener for uniform mixing to obtain antistatic down.

[0030] Example 2

[0031] Preparation of conductive modified cotton fiber:

[0032] Prepare 5L of 10% ferric chloride aqueous solution, soak 100g of cotton fiber in the ferric chloride aqueous solution for 20 minutes to obtain activated cotton fiber;

[0033] A pyrrole aqueous solution with a mass concentration of 5% is prepared, and the activated cotton fiber is not dried. The activated cotton fiber with the ferric chloride aqueous solution is kept immersed in the pyrrole aqueous solution for 2 hours. After being taken out, it is dried at 30-40° C. to obtain cotton fiber with conductive surface modification.

[0034] Preparation of anti-static down:

[0035] 100g of down that has been washed and dried is mixed with 30g of cotton fiber whose surface has been conductively modified, and the mixture is added into an opener for uniform mixing to obtain antistatic down.

[0036] Example 3

[0037] Preparation of conductive modified cotton fiber:

[0038] Prepare 5 L of 10% hydrogen peroxide aqueous solution, take 100 g of cotton fiber and soak it in the hydrogen peroxide aqueous solution for 20 minutes to obtain activated cotton fiber;

[0039] A pyrrole aqueous solution with a mass concentration of 5% is prepared, and the activated cotton fiber is not dried. The activated cotton fiber with the hydrogen peroxide aqueous solution is kept immersed in the pyrrole aqueous solution for 2 hours. After being taken out, it is dried at 30-40° C. to obtain a cotton fiber with a conductive surface modification.

[0040] Preparation of anti-static down:

[0041] 100g of down that has been washed and dried is mixed with 50g of cotton fiber whose surface has been conductively modified, and the mixture is added into an opener for uniform mixing to obtain antistatic down.

[0042] Example 4

[0043] Preparation of conductive modified cotton fiber:

[0044] Prepare 5L of 10% ferric chloride aqueous solution, soak 100g of cotton fiber in the ferric chloride aqueous solution for 20 minutes to obtain activated cotton fiber;

[0045] A pyrrole aqueous solution with a mass concentration of 5% is prepared, and the activated cotton fiber is not dried. The activated cotton fiber with the ferric chloride aqueous solution is kept immersed in the pyrrole aqueous solution, and the soaking reaction is carried out for 2 hours. After being fished out, the cotton fiber is dried at 30-40°C, and the dried cotton fiber is combed with a cotton carding machine. Then, the two ends and the middle of the cotton fiber are heated with hot air with a hot air gun. The hot air temperature is 230°C, and the hot air heating time is 1 second. After heating, cotton fibers with conductive surface modification are obtained.

[0046] Preparation of anti-static down:

[0047] 100g of down that has been washed and dried is mixed with 30g of cotton fiber whose surface has been conductively modified, and the mixture is added into an opener for uniform mixing to obtain antistatic down.

[0048] Example 5

[0049] Preparation of conductive modified cotton fiber:

[0050] Prepare 5L of 10% ferric chloride aqueous solution, soak 100g of cotton fiber in the ferric chloride aqueous solution for 20 minutes to obtain activated cotton fiber;

[0051] A pyrrole aqueous solution with a mass concentration of 5% is prepared, and the activated cotton fibers are not dried. The activated cotton fibers with the ferric chloride aqueous solution are kept immersed in the pyrrole aqueous solution for 2 hours of soaking reaction. After being fished out, the fibers are dried at 30-40°C, and the dried cotton fibers are combed with a carding machine. Then, the two ends and the middle of the cotton fibers are heated with a hot air gun. The hot air temperature is 260°C, and the hot air heating time is 3 seconds. After heating, cotton fibers with conductive surface modification are obtained.

[0052] Preparation of anti-static down:

[0053] 100g of down that has been washed and dried is mixed with 30g of cotton fiber whose surface has been conductively modified, and the mixture is added into an opener for uniform mixing to obtain antistatic down.

[0054] Comparative Example 1

[0055] Preparation of anti-static down:

[0056] 100 g of down that has been washed and dried is mixed with 30 g of cotton fiber that has been combed by a carding machine, and the mixture is added into an opener for uniform mixing to obtain down.

[0057] Comparative Example 2

[0058] Made with 130g of washed and dried down.

[0059] The antistatic performance of the down prepared in the above examples and comparative examples was compared by measuring their volume resistivity under different air humidity conditions. The specific test data are shown in the following table:

[0060]

[0061] It can be seen from the above data that the antistatic down prepared by the present invention has lower resistance than conventional down and down and cotton fiber blends, which means it has better antistatic ability.

[0062] At the same time, the down of the above embodiment and the comparative example was washed with soapy water. During the washing process, the down was wrapped in a permeable cloth bag to prevent the down from being lost. The soapy water washing was performed 10 times. After washing, it was dried and the volume resistivity test was performed again. The results are shown in the following table:

[0063]

[0064]

[0065] The down obtained by mixing cotton fibers that have been heated by hot air has better washing resistance than that obtained by mixing cotton fibers that have not been heated by hot air. The difference in volume resistivity before and after washing is not much.

[0066] At the same time, the appearance of the down obtained in Examples 1-5 is not much different from that of the down in the comparative example, and the surface is smooth, soft and fluffy.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An antistatic down, characterized in that: include: Down and surface-conductively modified cotton fibers are mixed at a mass ratio of 1:(0.1-0.5) to obtain the down. The preparation method of the surface-conductively modified cotton fibers comprises: immersing the cotton fibers in an oxidant solution for activation treatment for 10-30 minutes, wherein the oxidant solution is an aqueous solution of at least one of persulfate, ferric chloride, ferric nitrate, ferric sulfate and hydrogen peroxide; immersing the activated cotton fibers in a pyrrole monomer solution for 1-3 hours, wherein the pyrrole monomer solution is an aqueous solution of pyrrole, and drying to obtain the surface-conductively modified cotton fibers; the surface-conductively modified cotton fibers are subjected to a heat treatment, wherein the heat treatment method comprises heating the surface-conductively modified cotton fibers in hot air at 230-260° C. for 1-3 seconds; and before the surface-conductively modified cotton fibers are subjected to a heat treatment, the cotton fibers are combed to obtain a plurality of parallel or nearly parallel cotton fibers, and during the heat treatment, the middle and both ends of the combed cotton fibers are heated.

2. A duvet, characterized in that: The inner side of the duvet is wrapped with the antistatic down according to claim 1.

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