JP2002088653A - Fabric having moisture-absorbing exothermic property/ moisture-releasing cooling property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moisture-absorbing exothermic fabric using polyester fibers. SOLUTION: The fabric containing the polyester fibers processed by polymerizing a hydrophilic compound on the surfaces of the fibers and having the moisture-absorbing exothermic property/the moisture-releasing cooling property, is characterized in that a temperature rise due to the moisture-absorbing heat generation is >=0.5 deg.C and that the temperature drop due to the moisture-releasing cooling is >=0.5 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester fiber cloth excellent in heat absorption / heat release / cooling / cooling. The present invention is particularly suitable for use as a material for clothing that can be used for an inner or lining, or sports clothing, a material for bedding that can be used for a futon side, a material for a tent, and the like. The present invention relates to a polyester fiber cloth having excellent water-cooling properties.

[0002]

2. Description of the Related Art Conventionally, wool-based fabrics have been known as fiber fabrics having a heat-absorbing and heat-generating property. As a moisture-absorbing, moisture-absorbing, heat-generating heat-retaining product, JP
It is disclosed in Japanese Patent Publication No. 294006. In addition, JP
JP-A-00-129574 discloses that a fabric is imparted with moisture-absorbing heat generation property by fixing high-moisture-absorbing / desorbing moisture-absorbing heat-generating fine particles to a nonwoven fabric using an adhesive.

However, since the moisture-absorbing and heat-generating fabric obtained by the above-mentioned method is complicated in handling during production, it is desired to develop a moisture-absorbing and heat-generating fabric made of polyester fiber which is easier to handle and suitable for industrial production. Was rare.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a moisture-absorbing and heat-generating fabric using polyester fibers.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a cloth containing polyester fibers processed by polymerizing a hydrophilic compound on the fiber surface, the cloth containing fibers before processing. In addition, the present invention provides a moisture-absorbing heat-generating / dehumidifying cooling fabric in which the temperature rise due to moisture absorption and heat generation is 0.5 ° C. or more and the temperature drop due to moisture cooling is 0.5 ° C. or more.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The moisture-absorbing heat-generating / releasing-cooling fabric of the present invention has a moisture-absorbing and heat-generating property by blending and blending special moisture-absorbing and heat-generating fibers or by fixing moisture-absorbing and heat-generating fine particles with an adhesive. Instead of using polyester fibers, polyester fibers are used which are made to polymerize a hydrophilic compound on the fiber surface to give heat-absorbing heat.

As the hydrophilic compound useful in the present invention, a hydrophilic compound containing a polyoxyalkylene group and having two or more radically polymerizable double bonds is preferable. For example, the following general formula (1) or (2) ).

[0008]

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[In the above formula, R is

[0010]

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Or -C _n H _2n- (where n represents an integer of 1 to 6); Z represents H or -CH ₃ ;
And b represent 0 or a positive integer such that a + b is 0 to 50, and x and y are 0 or a positive integer such that x + y is 0 to 30. However, a + b + x + y is 1
0 or more]

[0012]

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[In the above formula, c and z represent 0 or a positive integer such as 0 to 50. However, c + z is 2 to 50
In addition, specific examples thereof include the following formulas (3), (4),
The compounds of (5) and (6) can be mentioned.

[0014]

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[0015]

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[0016]

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[0017]

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In the present invention, at the time of polymerization on the fiber surface, a monomer compound copolymerizable with the hydrophilic compound may be used together with the hydrophilic compound. Such copolymerizable monomer compounds include, for example, acrylic acid, methacrylic acid, styrenesulfonic acid, maleic acid, itaconic acid, coutronic acid, vinylsulfonic acid, 2-allyloxy-2-
Hydroxypropanesulfonic acid, tert-butylacrylamidesulfonic acid, 2-acrylamide-2-methylpropanesulfonic acid, 4-vinylpyridine, 2-vinylpyridine, 2-vinyl-6-methylpyridine, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate , 2-methyl-5-vinylpyridine,
2-vinyl-5-ethylpyridine, 4- (4-propenylbutynyl) pyridine, dimethylaminopropyl methacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, N, N-methylenebisacrylamide and the like can be mentioned. .

In addition, in the polymerization of the monomer compound containing the hydrophilic compound, that is, the polymerization of the hydrophilic compound or the hydrophilic compound and the copolymerizable monomer compound, a melamine-based additive is used as an additive for crosslinking. Resins, glyoxal resins, epoxy resins and other reactive resins and imine crosslinking agents may be used in combination, and potassium peroxide, ammonium persulfate, hydrogen peroxide, benzoyl peroxide, azobisisobuty Ronitrile, tertiary butyl peroxide and the like may be used in combination, and a natural polymer such as sericin, fibroin and collagen may be added to the polymerization system.

In the polyester fiber used in the present invention, in which a hydrophilic compound is polymerized on the fiber surface,
When the hydrophilic compound is graft-polymerized to the polyester constituting the polyester fiber, the hydrophilic compound is not directly graft-polymerized to the polyester constituting the polyester fiber, but the hydrophilic compounds on the polyester fiber are Alternatively, it may be considered that this is polymerized with the above-mentioned copolymerizable monomer compound. In the present invention, any of them may be used. If the monomer compound is treated only by known dry heat treatment on the polyester fiber, no polymerization reaction occurs,
It is necessary that the monomer compound has been polymerized by an exhaustion treatment, an electron beam treatment, an ultraviolet treatment, a microwave treatment, or the like. Further, the polymerization reaction of such a monomer compound occurs not only on the fiber surface but also inside the fiber near the surface, and the present invention includes such a case.

The moisture-absorbing heat-generating / wetting-release cooling fabric of the present invention includes a woven fabric, a knitted fabric, and a nonwoven fabric made of a fiber mainly containing a polyester fiber obtained by polymerizing the hydrophilic compound on the fiber surface as described above. As long as the content of the mixture is as low as not to impair the object of the present invention, natural fibers such as cotton and wool, synthetic fibers such as nylon and acrylic, regenerated fibers such as rayon, and semi-synthetic fibers such as acetate are included. May be.

In producing the moisture-absorbing heat-generating / dehumidifying-cooling fabric of the present invention, the amount of the hydrophilic compound and the other compound used in combination with the hydrophilic compound is 0.1 to 20% by weight of the fabric weight. It is preferably from 1 to 15% by weight, particularly preferably from 3 to 10% by weight. If the amount is less than 0.1% by weight, it is difficult to obtain the desired effect.
If the content exceeds 0% by weight, the hand becomes hard and the easy-care property peculiar to the polyester fiber fabric is reduced (the dimensional stability is lost, and wrinkles are easily generated).
There is fear.

The fabric of the present invention has a property of absorbing moisture and generating heat by absorbing moisture. Thus, in the fabric of the present invention, the temperature rise due to the moisture absorption and heat generation is compared with the fabric containing fibers before processing (before processing by polymerization of a hydrophilic compound on the fiber surface (the same applies hereinafter)). 0.5 ° C. or higher. In the above description, the cloth containing the fibers before processing is a cloth having exactly the same configuration as the cloth containing the processed fibers, except that the processing by polymerization of the hydrophilic compound on the fiber surface is not performed. (The same applies hereinafter).

The fabric of the present invention also has a property of releasing absorbed moisture, and has a performance of cooling at the time of releasing moisture. 0.5 ° C. or higher as compared to a fabric containing As described above, the fabric of the present invention has a moisture absorbing and releasing property of absorbing and discharging moisture, and the difference between the moisture absorbing and releasing amounts is 0.5 [(g / g).
g) × 100] or more.

Further, in the fabric of the present invention, it is preferable that the friction voltage is not more than one half of that of the fabric containing the fibers before processing. Further, in the fabric of the present invention, by appropriately selecting a hydrophilic compound to be used and other compounds to be used in combination with the hydrophilic compound, the deodorizing property, the water absorbing property, and the SR property (antifouling property) are selected according to their properties. ) Can also be imparted.

Before or after the hydrophilic compound is bonded to the surface of the polyester fiber by polymerization, a known antibacterial agent, SR agent, flame retardant, antistatic, or the like is applied by a known method. Is also possible. Heat generation by moisture absorption of the present invention /
The moisture release cooling fabric can be manufactured as follows.

For example, the fabric of the present invention contains a polyoxyalkylene group with respect to a fabric mainly containing polyester fibers, which has been subjected to scouring, dyeing and antibacterial processing, SR processing and flameproofing processing as required. It can be obtained by polymerizing a hydrophilic compound having two or more radically polymerizable double bonds or a compound thereof and another combined compound on the surface of a polyester fiber. As a specific method for the polymerization, for example, a liquid jet dyeing machine or the like is used, and in a treatment solution containing the above compound at 100 to 150 ° C. for 5 minutes to 4 minutes.
A dipping treatment method for treating for a time, or a wet treatment for applying the treatment liquid to the fabric, followed by drying at 30 to 180 ° C. if necessary and treating in a 90 to 140 ° C. atmosphere filled with steam for 1 to 60 minutes. A method of irradiating a microwave, an electron beam, an ultraviolet ray, or the like before or after the heat treatment or the treatment liquid is applied to the cloth may be used. In addition, it is preferable to replace the surrounding atmosphere with nitrogen or the like during the polymerization reaction because the generated radicals can be prevented from disappearing and the effective utilization of the compound can be improved.

After binding the polymer of the monomer compound containing a hydrophilic compound to the polyester fiber surface by such a method, it is preferable to perform soaping to remove unreacted compounds adhering to the fabric. Good. Then, if necessary, a known antibacterial agent, SR agent, flame retardant, antistatic agent and the like may be applied by a known method.

[0029]

The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples. Each performance evaluation in the examples was performed by the following method. Temperature rise of moisture absorption and heat generation A bag-shaped evaluation sample is attached to a temperature sensor of a temperature sensor (Model 513E) manufactured by Anritsu Keiki Co., Ltd. In this state, humidity is adjusted in an environment of 20 ° C. and 40% RH. After confirming that the temperature has reached 20 ° C., the temperature sensor to which the sample is attached is carried into an environment of 20 ° C. and 90% RH, and the temperature change is recorded over time. The value of the increase in the temperature of the exothermic heat of moisture absorption is recorded as the difference between the temperature 5 minutes after the sample was brought into an environment of 20 ° C. and 90% RH and 20 ° C.

As in the case of increasing the temperature of the heat generated by the absorption of moisture, the evaluation sample is attached to a temperature sensor, and the humidity is adjusted in an environment of 20 ° C. and 90% RH in that state. After confirming that the temperature has reached 20 ° C, the temperature sensor with the sample
It is transported in an environment of 0 ° C. and 40% RH, and the temperature change is recorded over time. The value of the dehumidifying cooling temperature drop is 20 ° C., 40 ° C.
% After 5 minutes from the time of transportation to the environment of
Record as difference from 0 ° C.

Difference in moisture absorption / desorption Amount of moisture absorption (W ₁ ) in an environment of 20 ° C. and 65% RH and an amount of moisture absorption (W ₂ ) in an environment of 30 ° C. and 90% RH are compared with the evaluation sample. And immediately after being left in an oven at 105 ° C. for 2 hours, the weight (W ₀ ) is measured. From these measured values, the value of the difference in moisture absorption / release is determined by the following equation. The unit is [(g / g) × 100].

Moisture absorption / desorption difference = [(W ₂ −W ₁ ) / W ₀ ] × 100 Friction band voltage Measurement was performed by a friction band voltage measurement method according to JIS L1094 (a method for testing the chargeability of woven and knitted fabrics). Cotton was used as the friction cloth, and the temperature and humidity conditions were 20 ° C. and 40% RH.

Each performance was measured on an initial (before washing) sample of measurement data and on a sample after 20 washings to evaluate washing durability. The washing method was based on JIS L0217 103 method. Example 1 Relaxation scouring of a taffeta fabric using a polyester false twisted yarn having a fabric weight of 100 g / m ² by a conventional method,
Presetting, alkali reduction processing and dyeing are sequentially performed, and then a treatment solution having the following composition is applied by a padding method at a squeezing rate of 60% by weight, and steaming (moisture heat treatment), soaping and finish setting are performed, and moisture absorption and heat generation are performed. / A fabric excellent in moisture release cooling was obtained. The amount of the polymerizable monomer compound attached was 6% of the fabric weight.

The performance evaluation results of the obtained fabric are as shown in Table 1. Composition of polymerization treatment liquid Monomer A: 10% by weight of compound of formula (5) Monomer B: 1% by weight of methacrylic acid Radical polymerization initiator: 1% by weight of ammonium persulfate 88% by weight of water Comparative Example 1 (Example 1) Fabric before processing) The same operation as in Example 1 was repeated to sequentially perform relaxation scouring, presetting, alkali weight reduction processing and dyeing, and then finishing setting was performed.

Table 1 shows the results of the performance evaluation of the obtained dyed and finished fabric.

[0036]

[Table 1]

Example 2 Relaxed scouring, presetting, and dyeing were sequentially performed in a usual manner on an interlock knitted fabric using polyester false twisted yarn having a fabric weight of 200 g / m ² , and then in Example 1, A polymerization treatment liquid having the same composition as that used was applied by a padding method at a squeezing ratio of 80% by weight, and drying, steaming (moisture heat treatment), soaping and finishing setting were performed, and the heat absorption / heat release / cooling properties were excellent. The obtained fabric was obtained. The amount of the polymerizable monomer compound attached was 8% of the fabric weight.

The performance evaluation results of the obtained fabric are as shown in Table 2. Comparative Example 2 (Fabric before processing of Example 2) The same operation as in Example 2 was repeated to perform relaxing scouring, presetting, and dyeing in order, and then finishing was performed. Table 2 shows the performance evaluation results of the obtained dyed and finished fabric.

[0039]

[Table 2]

[0040]

According to the present invention, a polyester fiber cloth can be easily imparted with moisture absorption and heat generation by post-processing, and can also be imparted with moisture absorption and heat generation with washing durability. Since the color change due to color is small, color matching at the time of dyeing is easy. Also, unlike wool and the like, it has easy care properties (dimensional stability by washing) unique to polyester fiber cloth, and is easy to handle. Moreover, since it is a polyester fiber cloth, performance such as bacteriostatic properties can be easily imparted. Further, the fabric of the present invention has not only a heat-absorbing heat-generating property but also a moisture-releasing cooling property.

Therefore, when the fabric of the present invention is used for inner materials, linings, clothes, gloves, shoes, sports clothing, bedding, tents, etc., comfortable products can be obtained.

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[Procedure amendment]

[Submission date] September 13, 2000 (2009.1)
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[Wherein, Z represents H or —CH ₃ ,
c and z represent 0 to 0 to 50 or a positive integer.
However, c + z is assumed to be 2 to 50.] Further, specific examples thereof include the following formulas (3), (4),
The compounds of (5) and (6) can be mentioned.

Claims (4)

[Claims] 1. A fabric containing polyester fibers processed by polymerizing a hydrophilic compound on the fiber surface, wherein the temperature rise due to moisture absorption and heat generation is 0.5 ° C. compared to a fabric containing fibers before processing. The moisture-absorbing heat-generating / dehumidifying-cooling fabric, wherein the temperature drop due to the moisture-cooling is 0.5 ° C or more. 2. The heat-absorbing / heat-absorbing material according to claim 1, wherein the hydrophilic compound contains a polyoxyalkylene group and a hydrophilic compound having two or more radically polymerizable double bonds.
Moisture release cooling fabric. 3. The difference in moisture absorption and desorption is 0.5 [(g / g) × 10.
0] or more, the moisture-absorbing heat-generating / dehumidifying cooling fabric according to claim 1 or 2. 4. The moisture-absorbing heat-generating / dehumidifying-cooling fabric according to claim 1, wherein the frictional voltage is not more than half that of the fabric containing the fibers before processing.