JP2013049941A - Polyamide fiber fabric with durable antistatic-property and water repellency, and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polyamide fiber fabric that has both of antistatic properties having washing durability and water repellency and is safe for living organisms and an environment, and to provide a method for producing the same.SOLUTION: The polyamide fiber fabric with durable antistatic-properties and water repellency has a water repellency of the third grade or more after 30 times repeated washings prescribed in the JIS L-1092 method and a friction-charged electrostatic potential prescribed in the JIS L-1094 method of 2,500 V or less, and is treated with a fluorine-based water repellent agent of which the content of perfluorooctanoic acid (PFOA) measured by time-of-flight secondary ion mass spectrometry (TOF-SIMS) is less than a detection limit.

Description

  The present invention relates to a fabric. More specifically, the present invention relates to a polyamide fiber fabric having an antistatic property and water repellency that are extremely excellent in durability, and safe for living organisms and the environment, and a method for producing the same.

  Synthetic fiber fabrics tend to accumulate static electricity, and this tendency is particularly noticeable with polyamide fiber fabrics. For this reason, there is a problem of giving unpleasant feeling such as clinging to the body when wearing clothes or causing a discharge phenomenon called bee when attaching or detaching. In addition, these fabrics are often used for outer garments, but there is also a problem that clothes get wet due to rain, snow, or the like.

  As antistatic processing to suppress static electricity, a method of forming a complex on the fiber surface by treating with an ionic polymer activator, or a mixture of hydrophilic polymer substance and acidic, basic and amide type low molecular weight substance is given to the fiber Later, a method of grafting these onto the fiber surface by dry heat, wet heat, radiation, microwave, ultraviolet rays, or the like has been proposed.

  On the other hand, as water-repellent processing, the fabric is impregnated with a water-repellent agent such as a fluorine-based water repellent agent or a silicone-based water repellent agent in the final finishing step, followed by a drying heat treatment, and particularly excellent in washing durability. Water repellent processing using a fluorine-based water repellent is widely performed.

However, when water-repellent processing and anti-static processing are used in combination, it is very difficult to simultaneously impart anti-static properties with washing durability in addition to water repellency due to the properties of both treatment agents. Therefore, in order to impart antistatic properties, a method of treating a polymer electrolyte such as a cationic surfactant or a polycation derivative that does not significantly reduce water repellency in combination with a fluorine resin has been performed. However, this method has a drawback of poor washing durability.
For example, in the following Patent Documents 1 and 2, the fiber is treated with a hydrophilic compound, followed by a low-temperature plasma treatment, and then the fiber is subjected to water or water / oil repellent treatment. Has been proposed. In Patent Document 3 below, a nylon fiber is reacted with an antistatic resin compound having at least two functional groups capable of reacting with an amino terminus contained in the nylon fiber in the molecule. Subsequently, a method has been proposed in which low-temperature plasma treatment is performed and a water-repellent resin layer is formed thereon. However, in these cases, since the water-repellent treatment applied later is superior, there is a problem that the antistatic property is insufficient and the washing durability is also poor.

Further, in water repellent processing, a perfluorooctanoic acid (hereinafter also referred to as “C8”) water repellent using C8 telomer (C ₈ F ₁₇ −) as a raw material is often used at a high concentration. That is a problem. When manufacturing water and oil repellents using C8 telomer as a raw material, a small amount of PFOA (perfluorooctanoic acid: C ₇ F ₁₅ COOH) is produced as a by-product, and since this PFOA has environmental persistence and human accumulation, As a global movement, regulations are being promoted in the direction of preventing diffusion as a preventive measure. As an alternative, there is a movement to use a perfluorohexanoic acid (hereinafter also referred to as “C6”) water repellent (see Patent Documents 4 to 6 below), but a C6 water repellent is a C8 water repellent. There is a drawback that the water repellency is greatly inferior to a liquid agent.

  Thus, there is still a polyamide fiber fabric that has both antistatic properties and water repellency with satisfactory washing durability (hereinafter also referred to as “durable antistatic water repellency”) and can satisfy environmental regulations, and a method for producing the same. Not provided.

JP-A-61-97478 Japanese Patent Laid-Open No. 10-325078 Japanese Patent Laid-Open No. 11-36176 JP 2006-219586 A International Publication WO2009 / 041650 Pamphlet JP 2010-229593 A

  The problem to be solved by the present invention is to provide a polyamide fiber fabric that has both antistatic and water repellency with washing durability and can meet environmental regulations, and a method for producing the same, in view of the background of the prior art. is there.

As a result of intensive studies and repeated experiments, the present inventor first treated the fabric with low-temperature plasma, and then applied the antistatic agent and the specific water repellent at the same time. Both the agent and the water repellent were firmly fixed to the fabric, and it was found that the above-mentioned problems were achieved, and the present invention was completed.
That is, the present invention is as follows.

(1) The water repellency after 30 repeated washings specified in the JIS L-1092 method is 3 or more, the frictional voltage specified in the JIS L-1094 method is 2500 V or less, and the flight time is 2 A durable antistatic water-repellent polyamide fiber fabric, which is treated with a fluorine-based water repellent whose perfluorooctanoic acid (PFOA) content in a secondary ion mass spectrometry (TOF-SIMS) measurement is less than a detection limit.

(2) The durable water-repellent water-repellent polyamide fiber cloth according to (1), wherein the fluorine-based water repellent is a perfluorohexanoic acid (C6) -based water repellent.

(3) The following steps:
Treating polyamide fiber fabric with low temperature plasma;
The treated fabric is treated with a mixture of a fluorine-based water repellent and an antistatic agent whose perfluorooctanoic acid (PFOA) content in the time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurement is less than the detection limit. And drying the resulting fabric
The manufacturing method of the durable antistatic water-repellent polyamide fiber fabric as described in said (1) or (2) containing.

  ADVANTAGE OF THE INVENTION According to this invention, the polyamide fiber fabric which has the antistatic property and water repellency which were very excellent in washing | cleaning durability simultaneously, and can clear environmental regulation can be provided.

Hereinafter, the present invention will be described in detail.
The fabric of the present invention is characterized in that, in the water repellency (degree) evaluation method stipulated in the JIS L-1092 method, the water repellency after repeated washing 30 times is grade 3 or higher. The water repellency is preferably quaternary or higher.

  Further, the fabric of the present invention is characterized in that the frictional voltage after repeated washing 30 times is 2500 V or less in the chargeability test method defined in JIS L-1094. The frictional voltage is preferably 2000 V or less, more preferably 1500 V or less.

  Furthermore, the fabric of the present invention has a fluorine-based water repellent attached thereto, and the content of perfluorooctanoic acid (PFOA) in the fluorine-based water repellent in the time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurement is detected. It is characterized by being less than the limit. For example, the PFOA detection limit in the measurement by high performance liquid chromatography / mass spectrometry (LC-MS) is about 2 to 5 ppb, but in this measurement, analysis with higher sensitivity is possible, and PFOA in TOF-SIMS measurement is possible. Is less than the detection limit, that is, if no fragment ion corresponding to PFOA is detected in the measurement, this is an indicator that substantially no PFOA is contained. Conventionally, as a main component of a fluorine-based water repellent, a C8 organic fluorine compound (C8) in which a fluorine atom and eight carbon atoms are combined has been widely used. It is known that it accumulates in the body and is considered to have a safety problem. Each manufacturer is expected to discontinue the production of C8 one after another, and various alternative PFOA-free fluorine-based water repellents have been developed. In the present invention, these fluorine-based water repellents that do not substantially contain PFOA may be used. As such water repellents, Asahi Guard E Series (Asahi Glass Co., Ltd.), NK Guard S Series (Nikka Chemical Co., Ltd.), Unidyne Multi Series (Daikin Industries Co., Ltd.) Etc. Examples of such water repellents include water repellents composed mainly of C4-6 organic fluorine compounds (C4 to C6) in which fluorine atoms and 4 to 6 carbon atoms are combined. Perfluorohexanoic acid (C6) water repellent is preferred. These water repellents preferably have a PFOA content less than the detection limit in their own time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurement.

The polyamide fiber fabric referred to in the present invention is characterized in that the constituent yarn material is mainly polyamide fiber filament yarn.
As long as the fabric of the present invention is obtained as a fabric such as a woven fabric or a knitted fabric, the use of yarn, density, structure and the like are not particularly limited. The fabric of the present invention can be, for example, a single woven fabric, a double woven fabric, a horizontal double woven fabric, a vertical double woven fabric, a vertical / horizontal double woven fabric, or the like as a woven fabric. , Double jersey, single tricot, double tricot, single raschel, double raschel, etc. The fabric of the present invention is preferably a single woven fabric suitable for outdoor use.

In the present invention, the polyamide fiber fabric is subjected to low temperature plasma treatment. Low-temperature plasma is plasma obtained at a low pressure. The electron temperature is high, but the gas temperature is low as a whole, and surface treatment is performed in order to promote the chemical reaction of individual excited neutral particles, ions, and electrons. It is widely used industrially as the center. The generation of the low temperature plasma is performed by depressurizing a sealed container containing the fiber fabric with a vacuum pump and introducing a gas for processing into the container. The introduced gas may be any non-polymerizable gas that does not cause plasma polymerization, such as inert gas, oxygen, nitrogen, air, etc., but in particular, the antistatic agent due to the edging effect, the viewpoint of the sticking property of the water repellent agent Therefore, nitrogen gas is preferable. Further, the pressure of the gas to be introduced needs to be adjusted in the range of 26 to 260 Pa, and if it deviates from the range, generation of low temperature plasma does not occur, and the characteristics of the fabric of the present invention cannot be obtained. The generation of plasma used in the present invention can be obtained by causing glow discharge by applying electric energy in the above atmosphere. As an electrical energy source at this time, a high frequency power supply of 13.56 MHz is generally used. Desired performance can be obtained with an output of 1 to 10 kW / cm ² , a distance of 1 to 10 cm between the irradiated surface and the fabric, and a treatment time of 1 to 20 seconds.

  In the present invention, some chemical processing (hereinafter, also referred to as “pretreatment”, see Table 1 below) may be performed before performing the low temperature plasma treatment. In particular, in order to achieve both antistatic properties and water repellency, It is preferable to perform treatment with an antistatic agent in advance.

  In the present invention, following the low-temperature plasma treatment, a mixed solution of an antistatic agent and a water repellent is applied to the obtained fabric (hereinafter also referred to as “post-treatment”). The antistatic agent used in the present invention refers to an organic compound that can exhibit antistatic performance due to its own hydrophilicity when applied on the fiber surface. Specifically, for example, polyethylene oxide, polyoxy Examples include ethylene nonylphenol ether, polyoxyethylene alkyl ether, methacrylic acid polyethylene glycol ester, acrylic acid polyethylene glycol ester, and polyvinylpyrrolidone. In the present invention, the synthetic fiber fabric is preferably treated with an aqueous solution of the above-described resin compound having antistatic properties, and the antistatic agent is preferably attached in an amount of 0.1 to 5% by weight based on the fiber weight. Here, if the adhesion amount of the antistatic agent is less than 0.1% by weight, sufficient antistatic performance cannot be obtained, and if it exceeds 5% by weight, the texture is markedly cured.

On the other hand, as the water repellent, as described above, from a safety point of view to biological and environmental, PFOA substantially no by-product C6 telomer _- a C6-based water repellent as a raw material of (C 6 _{F 13)} It is preferable to use it. The adhesion amount of the water repellent is preferably about 0.1 to 5% by weight in terms of solid content with respect to the fiber weight. If the amount of water repellent attached is less than 0.1% by weight, sufficient water repellency cannot be obtained, and if it exceeds 5% by weight, the texture is markedly cured. From the viewpoint of washing durability, the water repellent is preferably used in combination with a blocked isocyanate crosslinking agent.

  The water repellent adhesion amount can be determined from the solid content concentration of the water repellent and the pickup rate, but may be determined by the fluorescent X-ray method. The structure of the water repellent can be confirmed from fragment ions detected by TOF-SIMS measurement.

The antistatic agent and the water repellent are applied to the polyamide fiber fabric in the form of an aqueous emulsion. As a method for applying this aqueous solution to a synthetic fiber fabric, a normal pad-dry method can be used in which the fiber fabric is immersed in a treatment bath and then uniformly dried with a mangle and dried and heat-treated. Not limited.
By applying an antistatic agent and a water repellent to the polyamide fiber fabric in the form of an aqueous emulsion after such low-temperature plasma treatment, both the antistatic agent and the water repellent are firmly bonded to the fabric. The antistatic property and water repellency excellent in durability can be imparted to the synthetic fiber fabric.

  Subsequently, the treated fabric is dried. Such drying can be a heat treatment, and the heat treatment time is preferably about 150 to 190 ° C. for about 1 to 2 minutes. By such a heat treatment, durability of antistatic property and water repellency is greatly improved.

  As the single yarn fineness of the polyamide fiber material constituting the fabric of the present invention, those generally used in clothing and the like can be used. Among them, the single yarn fineness is 0.1 to 6.0 dtex. Are preferred. In the present specification, the single yarn fineness is calculated by the total fineness / number of single yarns.

  As the total fineness of the polyamide fiber material constituting the fabric of the present invention, those in a range generally used in clothing and the like can be used, and among them, those having a total fineness of 10 to 200 dtex are preferable.

Although the fabric weight of the fabric of this invention is not specifically limited, 10-200 g / m < ² > is preferable, More preferably, it is 30-150 g / m < ² >.

  The thickness of the fabric of the present invention is not particularly limited, but is preferably 0.01 to 1.2 mm, more preferably 0.05 to 0.8 mm. In this specification, the thickness of the fabric is a value obtained by using a thickness measuring device manufactured by Peacock and contacting a measurement portion of φ3.0 cm with a load of 5 g, measuring the three locations, and averaging.

Hereinafter, the present invention will be described specifically by way of examples. The present invention is not limited to this.
In the following examples and comparative examples, the following measurement methods were used for evaluation.

(1) Water repellency Based on the JIS L-1092 spray method, the following criteria evaluated.
5th grade: No wetness or water droplets on the surface 4th grade: No wetness on the surface but showing small waterdrops 3rd grade: A surface showing small individual wetness on the surface 2nd grade: Half of the surface What shows wetness in the area. First grade: What shows wetness on the entire surface. For the fabrics obtained in each Example and Comparative Example, a sample without washing treatment (before washing treatment) and after 30 repeated washings by the C method was used. Each was measured.
In Table 1 below, water repellency “4-5” refers to the state between grades 4 and 5, “3-4” refers to the state between grades 3 and 4, and “ “2-3” refers to a state between the second grade and the third grade.

(2) Antistatic property Based on JIS L-1094, the frictional voltage was measured on the conditions of temperature 20 degreeC and humidity 40% RH. Samples without washing treatment and after 30 washing cycles under the same conditions as in (1) above were measured.

(3) Time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurement Time-of-flight secondary ion mass spectrometer: TRIFT III type (manufactured by Physical Electric Co., Ltd.) ) Was used to perform qualitative analysis of PFOA-derived fragment ions and perfluorohexanoic acid-derived fragment ions on the sample surface.

[Example 1]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. This fabric was immersed in “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25 wt%): 3 wt% aqueous dispersion, and the excess liquid was removed with a squeezing machine at 100 ° C. for 2 minutes. Drying was performed, and curing at 170 ° C. for 90 seconds was performed. Thereafter, low-temperature plasma treatment was performed under the following conditions, and the obtained fabric was “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and the fluororesin “Asahi Guard” AG-E082 "(manufactured by Asahi Glass Co., Ltd., solid content 20% by weight, PFOA-derived fragment ions were not detected in TOF-SIMS measurement, and fragment ions based on perfluorohexanoic acid (C6) were detected. 4% by weight and isocyanate cross-linking agent “Maikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersion in 0.4% by weight aqueous dispersion and removing excess liquid with a press And drying at 100 ° C. for 2 minutes, and final setting at 170 ° C. for 90 seconds. The fabric was evaluated for antistatic properties and water repellency after initial (no washing treatment (front)) and after 30 repeated washings. The results of each test are shown in Table 1 below. In TOF-SIMS measurement of this fabric, PFOA-derived fragment ions were not detected, but perfluorohexanoic acid fragment ions were detected.
(Plasma treatment conditions)
Gas and pressure: nitrogen 53-67Pa
Applied voltage: 5-6kV
Distance between irradiated surface and fabric: 5cm
Processing speed: 20m / min Number of electrodes: 4

[Example 2]
A ripstop fabric using polyamide processed yarn 22 dtex / 24 filament as warp and polyamide processed yarn 33 dtex / 26 filament as weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. 3% by weight of this fabric “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight) and fluororesin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20) % By weight): 4% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersed in a 0.4% by weight aqueous dispersion, excess liquid is removed with a press, 100 ° C. × 2 minutes The product was dried and cured at 170 ° C. for 90 seconds. Thereafter, low-temperature plasma treatment was performed under the same conditions as in Example 1, and the resulting fabric was “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluorine. -Based resin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight): 8% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): 0.8% by weight water It was immersed in the dispersion, the excess liquid was removed with a squeezer, dried at 100 ° C. for 2 minutes, and final set at 170 ° C. for 90 seconds was performed. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Example 3]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. This fabric was subjected to low-temperature plasma treatment under the same conditions as in Example 1, and the resulting fabric was “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 6% by weight. And fluororesin “Asahi Guard AG-E082” (Asahi Glass Co., Ltd., solid content 20% by weight): 4% by weight and isocyanate cross-linking agent “Meikanate ST” (Asahi Glass Co., Ltd.): 0.4 wt. It was immersed in a% aqueous dispersion, the excess liquid was removed with a press machine, dried at 100 ° C. for 2 minutes, and final set at 170 ° C. for 90 seconds. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Example 4]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. "TS-897" (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluororesin "Asahi Guard AG-E082" (manufactured by Asahi Glass Co., Ltd., solid content 20) % By weight): 4% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersed in a 0.4% by weight aqueous dispersion, excess liquid is removed with a press, 100 ° C. × 2 minutes The product was dried and cured at 170 ° C. for 90 seconds. Thereafter, low-temperature plasma treatment was performed under the same conditions as in Example 1, and the resulting fabric was “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluorine. -Based resin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight): 8% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): 0.8% by weight water It was immersed in the dispersion, the excess liquid was removed with a squeezer, dried at 100 ° C. for 2 minutes, and final set at 170 ° C. for 90 seconds was performed. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Example 5]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. This fabric was immersed in “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25 wt%): 3 wt% aqueous dispersion, and the excess liquid was removed with a squeezing machine at 100 ° C. for 2 minutes. Drying was performed, and curing at 170 ° C. for 90 seconds was performed. Thereafter, low-temperature plasma treatment was performed under the same conditions as in Example 1, and the resulting fabric was “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluorine. Resin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20 wt%): 10 wt% and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): 1 wt% aqueous dispersion Then, the excess liquid was removed with a press, dried at 100 ° C. for 2 minutes, and final set at 170 ° C. for 90 seconds was performed. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Comparative Example 1]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. This fabric was immersed in “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25 wt%): 3 wt% aqueous dispersion, and the excess liquid was removed with a squeezing machine at 100 ° C. for 2 minutes. Drying was performed, and curing at 170 ° C. for 90 seconds was performed. Thereafter, low-temperature plasma treatment was carried out under the same conditions as in Example 1, and the resulting fabric was obtained from a fluororesin “Asahi Guard AG-E082” (Asahi Glass Co., Ltd., solid content 20 wt%): 4 wt. % And isocyanate cross-linking agent “Maikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersed in a 0.4 wt% aqueous dispersion, the excess liquid was removed with a press machine, dried at 100 ° C. for 2 minutes, 170 A final set of 90 ° C. × 90 seconds was performed. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Comparative Example 2]
A woven fabric woven using polyamide processed yarn 15 dtex / 12 filament as warp and weft was scoured and dyed by a conventional method to obtain a light blue dyed fabric. Fluorine resin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight): 8% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): 0 It was immersed in a 0.8 wt% aqueous dispersion, the excess liquid was removed with a press machine, dried at 100 ° C. for 2 minutes, and cured at 170 ° C. for 90 seconds. Thereafter, low-temperature plasma treatment was performed under the same conditions as in Example 1, and the obtained fabric was designated as “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25 wt%): 3 wt% aqueous dispersion. Then, the excess liquid was removed with a press, dried at 100 ° C. for 2 minutes, and final set at 170 ° C. for 90 seconds was performed. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Comparative Example 3]
A woven fabric woven using polyamide processed yarn 15 dtex / 12 filament as warp and weft was scoured and dyed by a conventional method to obtain a light blue dyed fabric. "TS-897" (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluororesin "Asahi Guard AG-E082" (manufactured by Asahi Glass Co., Ltd., solid content 20) (Wt%): 8 wt% and isocyanate cross-linking agent “Maikanate ST” (manufactured by Asahi Glass Co., Ltd.): dipped in 0.8 wt% aqueous dispersion, removed excess liquid with a press, 100 ° C. × 2 minutes The product was dried and cured at 170 ° C. for 90 seconds. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Comparative Example 4]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. This fabric was immersed in “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25 wt%): 3 wt% aqueous dispersion, and the excess liquid was removed with a squeezing machine at 100 ° C. for 2 minutes. Drying was performed, and curing at 170 ° C. for 90 seconds was performed. Thereafter, “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluororesin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight) ): 4% by weight and isocyanate cross-linking agent “Maikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersed in a 0.4% by weight aqueous dispersion, excess liquid was removed with a press, and dried at 100 ° C. for 2 minutes. And final setting was performed at 170 ° C. for 90 seconds. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

[Comparative Example 5]
A taffeta-woven fabric using polyamide processed yarn 15 dtex / 12 filament for warp and weft was woven using a water jet loom. The obtained woven fabric was scoured and dyed by a conventional method to obtain a dark blue dyed fabric. Fluorine resin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight): 4% by weight and isocyanate cross-linking agent “Meikanate ST” (manufactured by Asahi Glass Co., Ltd.): 0 It was immersed in a 4 wt% aqueous dispersion, the excess liquid was removed with a press machine, dried at 100 ° C for 2 minutes, and cured at 170 ° C for 90 seconds. Thereafter, “TS-897” (manufactured by Takamatsu Yushi Co., Ltd., solid content 25% by weight): 3% by weight and fluororesin “Asahi Guard AG-E082” (manufactured by Asahi Glass Co., Ltd., solid content 20% by weight) ): 4% by weight and isocyanate cross-linking agent “Maikanate ST” (manufactured by Asahi Glass Co., Ltd.): immersed in a 0.4% by weight aqueous dispersion, excess liquid was removed with a press, and dried at 100 ° C. for 2 minutes. And final setting was performed at 170 ° C. for 90 seconds. The fabric was evaluated for antistatic properties and water repellency at the initial stage and after 30 repeated washings. The results of each test are shown in Table 1 below. The TOF-SIMS measurement result of the fabric was the same as in Example 1.

  According to the present invention, since the antistatic property and water repellency excellent in washing durability can be simultaneously imparted to the polyamide fiber fabric, the present invention has both antistatic property and water repellency having washing durability and a living body. -It can be suitably used for the production of clothes such as sportswear and outerwear that are environmentally safe.

Claims (3)

  The water repellency after 30 repetitive washings specified in JIS L-1092 is 3 or more, the frictional voltage specified in JIS L-1094 is 2500 V or less, and the time of flight secondary ion mass A durable antistatic water-repellent polyamide fiber fabric which is treated with a fluorine-based water repellent whose perfluorooctanoic acid (PFOA) content in analysis (TOF-SIMS) measurement is less than the detection limit.   The durable antistatic water-repellent polyamide fiber fabric according to claim 1, wherein the fluorine-based water repellent is a perfluorohexanoic acid (C6) -based water repellent. The following steps:
Treating polyamide fiber fabric with low temperature plasma;
The treated fabric is treated with a mixture of a fluorine-based water repellent and an antistatic agent whose perfluorooctanoic acid (PFOA) content in the time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurement is less than the detection limit. And drying the resulting fabric
The manufacturing method of the durable antistatic water-repellent polyamide fiber fabric of Claim 1 or 2 containing these.