JP4989298B2 - Vehicle interior fabric and car seat skin material - Google Patents

Description

  The present invention relates to a vehicle interior fabric and a car seat skin material.

Polyester fiber fabric has advantages such as strong strength, excellent dyeability, and easy to handle because it is difficult to wrinkle. Used for various applications including skin materials for clothes and car seats (car seats). Has been.
However, there are drawbacks such as poor anti-static properties, dust easily, clinging, and crackling when clothes are taken off. In particular, when used as a car seat skin material, when a passenger tries to touch a metal part such as a door when getting out of a car, static electricity is released at a time and gives an electric shock to the passenger. There was a thing. Such a phenomenon occurs frequently in winter, which is a low temperature and low humidity environment.
In addition, various types of electronic devices are incorporated in recent automobiles, and reduction of human body voltage is desired from the viewpoint of preventing malfunction.

Conventionally, as a countermeasure against electrostatic charging, polyester-based fibers are easily charged negatively and have the effect of suppressing the generation of static electricity even at relatively low temperatures and low humidity. It is used for fiber fabrics.
Further, there is known a vehicle interior material using a polyester fiber and a conductive fiber in combination using the conductivity of a conductive fiber to which carbon particles or the like are added (Patent Document 1).
Furthermore, as what imparts static elimination properties, a laminate including a conductive packing layer in which carbon fibers are added to a cloth containing conductive fibers is also known (Patent Document 2).
Japanese Patent Laid-Open No. 6-114981 Japanese Utility Model Publication No. 57-129483

Those using a cationic antistatic agent have excellent antistatic properties when measured at a frictional voltage (20 ° C., 40% RH) generally known as a chargeability test method. Yes. However, sufficient antistatic properties could not be exhibited with respect to the human body voltage assuming static electricity while riding in an automobile, in particular, the human body voltage for various fiber materials.
In addition, an antistatic polyester fiber fabric obtained by graft polymerization of a hydrophilic monomer having excellent antistatic properties on the surface of the fiber fabric was also investigated, and the antistatic polyester fiber fabric using the hydrophilic monomer was subjected to cationic treatment. An antistatic agent added was examined. However, excellent antistatic properties could not be exhibited at the same time for all polyester, cotton, and wool fabrics.
In addition, when a material having a backing layer to which conductive fibers or conductive materials are added is used as a car seat skin material, the appearance of blackish dullness deteriorates or the texture hardens, and the feeling of touch and comfort Had the problem of causing a drop in Furthermore, if these are used, the manufacturing cost increases, resulting in economic disadvantages.

  Therefore, the present invention proposes a vehicle interior fabric excellent in antistatic performance and a car seat skin material including the fabric.

The vehicle interior fabric according to the present invention is a polyester fiber fabric obtained by polymerizing a hydrophilic compound on a fiber surface, and an anionic compound is attached to the surface of the fabric. The hydrophilic compound is preferably a compound having a polyoxyalkylene group and having two or more polymerizable double bonds, and the anionic compound is more preferably a phosphate ester compound. The vehicle interior fabric may be a pile fabric.
The skin material for a car seat according to the present invention includes the vehicle interior fabric.

  According to the present invention, the human body voltage for a person wearing polyester, cotton, and wool fiber clothes is suppressed to 3000 V or less, which is a standard for suppressing the occurrence of an electric shock due to static electricity, and is sufficiently antistatic to avoid the electric shock. The vehicle interior fabric that exhibits the above can be provided. In particular, it can be suitably used for vehicle interior fabrics such as car seat skins and car seat covers, and reduction of the influence on various electronic devices mounted on automobiles can also be expected. Furthermore, since there is no need to add conductive fibers or conductive materials, it is possible to achieve excellent appearance quality by suppressing deterioration in quality such as darkening, and at the same time, an economic advantage can be found.

Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments.
The fabric for vehicle interior of the present invention is obtained by polymerizing a hydrophilic compound on the fiber surface of a polyester fiber fabric, and further having an anionic compound adhered to the surface of the fabric.
Here, the polyester fiber fabric of the present invention is produced from a dicarboxylic acid component and a diglycol component, and is a polyester obtained using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the diglycol component. As a polyester fiber, a fiber using alkylene glycol such as trimethylene glycol or tetramethylene glycol can be used as a system fiber (hereinafter referred to as regular PET) or a diglycol component. Moreover, a cationic dyeable polyester fiber that can be dyed with a cationic dye can also be used.

  The hydrophilic compound may be a compound that can be polymerized (including not only polymerization of a single compound but also copolymerization). However, from the viewpoint of texture and antistatic properties, a compound containing a polyoxyalkylene group and having two or more polymerizable double bonds is preferable. More specifically, a bifunctional monomer represented by the following general formula (1) is exemplified.

（但し、式（１）中、Ｒは下記（２）、（３）、（４）、（５）のうちのいずれかを表す。Ｚは水素原子またはメチル基を表す。ａおよびｂはａ＋ｂが０〜５０の範囲にある正の整数を表し、ｘおよびｙはｘ＋ｙが０〜３０の範囲にある０または正の整数を表す。また、ａ＋ｂ＋ｘ＋ｙは８以上である。）

（ここで、ｎは１〜６の整数を示す。）

(In the formula (1), R represents any of the following (2), (3), (4), (5). Z represents a hydrogen atom or a methyl group. A and b represent a + b. Represents a positive integer in the range of 0 to 50, and x and y represent 0 or a positive integer in the range of x + y of 0 to 30. Moreover, a + b + x + y is 8 or more.)

(Here, n represents an integer of 1 to 6.)

  Specific examples of the bifunctional monomer represented by the general formula (1) include compounds represented by the following general formulas (6) to (9).

  Further, in addition to the above hydrophilic compound, polymerization may be carried out including a monomer having at least one group selected from the group consisting of a hydroxyl group, a carboxyl group, an amino group, a sulfone group and a phosphate group. Specific examples thereof include acrylic acid, methacrylic acid, styrene sulfonic acid, maleic acid, itaconic acid, croutonic acid, vinyl sulfonic acid, 2-allyloxy 2-hydroxypropane sulfonic acid, 2-acrylamido 2-methylpropane sulfonic acid, 2 Examples thereof include hydroxyethyl methacrylate, hydroxypropyl methacrylate, and compounds represented by the following general formulas (10) to (12).

（ただし、式（１０）中、ｃおよびｄは、ｃ＋ｄが５以上となる０または正の整数を示す。）

（ただし、式（１１）中、ｅは５以上の整数を示す。）

(In the formula (10), c and d represent 0 or a positive integer in which c + d is 5 or more.)

(However, in formula (11), e represents an integer of 5 or more.)

Moreover, what was polymerized including the compound which has at least 1 aziridine group, a carbodiimide group, and an oxazoline group in addition to said hydrophilic compound is preferable from a durable viewpoint. More preferably, a compound having two or more aziridine groups, carbodiimide groups, and oxazoline groups may be included. Specifically, Nippon Shokubai Co., Ltd. Chemite PZ-33 (three aziridine groups), Nisshinbo Co., Ltd. V-02-L2 (carbodiimide equivalent: 385), Nippon Shokubai Co., Ltd. Epocross WS-500 ( Oxazoline number: 220) and the like.
Adhesion amount of the hydrophilic compound polymerized on the surface of the polyester fiber, exceeds 0.1 g / m ² less than Further 3 g / m ^2, it may not be exhibited in a balanced manner antistatic property to various fiber materials is there. Therefore, 0.1 to 3 g / m ² is preferable. Further, from the viewpoint of antistatic properties for many fiber materials, 0.2 to 0.9 g / m ² is more preferable.
Further, a fluorine-based compound may be used in combination with the above hydrophilic compound, and a fluorine-based compound may be copolymerized to impart water repellency to the polyester fiber fabric.

Examples of the anionic compound to be attached to the vehicle interior fabric of the present invention include sulfonic acid type, sulfuric acid ester type, and phosphoric acid ester type compounds, and phosphoric acid ester type compounds are particularly preferable. As the phosphoric acid ester type compound, those commercially available as phosphoric acid ester type antistatic agents can be preferably used. For example, Elecut N (manufactured by Kitahiro Chemical Co., Ltd.), Sunstat 249 (Sanyo Chemical Industries, Ltd.) And Destat FN-100 (manufactured by Kyoeisha Chemical Co., Ltd.), Permax PM-503 (manufactured by Yoshimura Oil Chemical Co., Ltd.), and the like.
If the adhesion amount of the anionic compound of the present invention is less than 0.05% by mass, sufficient antistatic property may not be exhibited. If the adhesion amount exceeds 1% by mass, the occurrence of tightness and flameproofing may occur. Reduction, slip (a phenomenon in which the yarns of the woven fabric slip and slip), etc. may occur. For this reason, the adhesion amount of the anionic compound is preferably 0.05 to 1% by mass. Furthermore, from the viewpoint of antistatic properties for various fiber materials, 0.1 to 0.5% by mass is more preferable.

The vehicle interior fabric according to the present invention is blended with other fibers such as nylon, polyurethane, acrylic, acetate, rayon, cotton, silk, wool, hemp, etc. in addition to the above-mentioned polyester fiber fabric. It may be knitted.
The form of the vehicle interior fabric of the present invention is not particularly limited, and woven fabrics, knitted fabrics, nonwoven fabrics, and the like can be used, but those that can be used as car skin materials are particularly preferable. Specific examples of the woven fabric include three-layered structures such as plain weave, oblique weaving, and satin weaving, altered structure, altered texture such as altered oblique weaving, vertical double weaving, single double weaving such as weft double weaving, Examples include vertical pile weaves such as fresh velvet, towels and velours, and weave pile weaves such as benjin, weft velvet, velvet and cole.

Specific examples of the knitted fabric may be either warp knitting or weft knitting (round knitting, flat knitting), and the warp knitting includes single denby knitting, single atlas knitting, double cord knitting, tricot knitting, fleece knitting, Jacquard edition can be mentioned. Examples of the weft knitting include flat knitting, rubber knitting, double-sided knitting, pearl knitting, tack knitting, floating knitting, one-side knitting, lace knitting, and splicing knitting. In the present invention, even pile fabrics having piles such as pile weave and pile knitting that are preferably used as interior materials for vehicles can exhibit excellent antistatic properties, and these piles maintain a loop. It may be a cut pile obtained by cutting a loop or a loop.
Further, the polyester fiber fabric may be subjected to weight loss, dyeing, printing, antibacterial, antibacterial, deodorizing, flame retardant, water absorbing processing, antifouling, water repellent processing, raising, and the like.

  The vehicle interior fabric according to the present invention can avoid an electric shock when the user gets off the vehicle by suppressing the human body voltage even for a person wearing any of polyester, cotton, and wool fiber clothes. The specific measurement of the human body voltage is performed according to the following procedure. In an environment of 10 ° C. and 30% RH (relative humidity), a subject wearing a vehicle interior fabric of the present invention on a car seat and wearing a polyester, cotton, or wool fiber garment is Sit on the fabric, move the waist to the left and right, and repeat the friction between the seat and the human body 10 times. The subject stands up after repeating the frictional motion 10 times. When standing up, the result of measurement using a commercially available human body electrometer with respect to the subject is defined as a human body voltage. The test is carried out for each of the above-mentioned three types of fiber garments, and it is preferable that the human body voltage of the subject is 3000 V or less when any of the garments is worn.

  If necessary, the fabric for vehicle interior of the present invention may provide a backing layer to the fabric for vehicle interior of the present invention, and the backing layer may have conductivity. Moreover, it is preferable that the fabric has flame retardancy suitable for its use. A test is performed according to the flame retardancy test FMVSS 302, self-extinguishing property or slow flame retardance (burning rate is 100 mm / min or less). It is preferable that

  As described above, the vehicle interior fabric of the present invention is excellent in antistatic properties, and can be suitably used for a car seat skin material and a car seat cover that are in particular automobile seats.

Next, a method for manufacturing a vehicle interior fabric according to the present invention will be described by way of example.
Production of a vehicle interior fabric is carried out by polymerizing a hydrophilic compound on the surface of a polyester fiber and then attaching an anionic compound to the polyester fiber fabric.

  As a method for polymerizing the hydrophilic compound on the surface of the polyester fiber, dry heat treatment, steam treatment, exhaustion treatment in a bath, cold batch treatment, microwave treatment, ultraviolet ray treatment, electron beam treatment, and steam treatment after dry heat treatment are performed. It is possible to use a processing method combining these or the like. Among these methods, steam treatment is preferably used from the viewpoints of polymerization efficiency and treatment stability. In the steam treatment, a treatment liquid containing a hydrophilic compound is applied to a polyester fiber fabric by a padding method or the like, and then subjected to normal pressure steam, heated steam, and high pressure steam treatment (after performing a dry heat treatment if necessary). Any method may be used for the steam treatment, but normal pressure steam and heated steam are preferable from the viewpoint of cost. The steam treatment temperature is preferably 80 to 180 ° C, more preferably 100 to 150 ° C, and the steam time is preferably about 1 to 120 minutes.

In addition to the hydrophilic compound polymerized on the surface of the polyester fiber, the treatment liquid containing the hydrophilic compound is an inorganic polymerization initiator such as ammonium persulfate, potassium persulfate, hydrogen peroxide, or 2,2′-azobis (2 -Organic polymerization initiators such as -amidinopropane) dihydrochloride, 2,2'-azobis (N, N'-dimethyleneisobutyramidin) dihydrochloride, 2- (carbamoylazo) isobutyronitrile. Can be. Further, as another polymerization initiator, a water-insoluble polymerization initiator such as benzoyl peroxide or azobisisobutylnitrile may be used by emulsifying with an anionic or nonionic surfactant. Furthermore, in order to increase the polymerization efficiency, a so-called redox polymerization initiator using a peroxide as a polymerization initiator and a reducing substance may be used.
Furthermore, a fluorine-based water repellent, penetrant, antibacterial agent, hygroscopic agent, endothermic agent, exothermic agent, deodorant, penetrant and the like can be added to the aqueous solution containing the hydrophilic compound. The solvent is not particularly limited, and water, alcohols, and the like can be used, but it is mainly preferable to use water.

  Before performing the treatment with the treatment liquid, if necessary, scouring / relaxation treatment, weight reduction treatment, dyeing treatment, textile printing treatment, flame retardant treatment, water absorption treatment, antifouling treatment, antibacterial treatment, raising (needle cloth raising, buff, Processing such as shearing) may be performed. After polymerization, soaping such as washing with hot water may be performed as necessary.

Next, the anionic compound is adhered to the surface of the polyester fiber fabric.
Examples of a method for attaching an anionic compound to the surface of a polyester fiber fabric include a padding method, a spray method, a bath exhaustion method, etc., using a treatment liquid containing an anionic compound. From the viewpoint of productivity, the padding method is preferable. After a treatment liquid containing an anionic compound is attached to the surface of the polyester fiber fabric by the padding method, drying is performed at about 80 to 130 ° C. In addition to the anionic compound, a raising agent, a water repellent, a penetrating agent and the like may be added to the treatment liquid containing the anionic compound.
After the treatment with a treatment liquid containing an anionic compound, a finishing set may be performed at a brushed (including fuzz raising, buffing, shearing, etc.) treatment or at about 130 to 200 ° C., if necessary.

  The fabric for vehicle interior of the present invention can exhibit antistatic properties in a well-balanced manner with respect to various fiber materials by polymerizing a hydrophilic compound on the fiber surface and adhering an anionic compound. And the antistatic property which the fabric for vehicle interiors of this invention has can suppress a human body voltage to 3000V or less in friction with the cloth made from polyester, wool, and cotton.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, it is not limited to an Example.
About the physical-property value, it measured with the following method.
(1) Human body voltage: under the environment of 10 ° C, 30% RH (relative humidity), the person wearing the clothes sits on the test cloth placed on the car seat, and then moves the waist from side to side. The human body voltage was measured using a commercially available human body electrometer after the human body's frictional motion was repeated 10 times, and then the human body voltage was raised. Three types of clothing, wool (wool), cotton, and polyester, were prepared and tested.
(2) Flame retardancy test: A test was conducted according to FMVSSS 302.

Example 1
As a polyester fiber fabric, a tricot is knitted using polyester fiber (84 dtex / 72 filament regular polyester), and after scouring, dyeing (disperse dye: Sumikaron Yellow S-ERPD, manufactured by Sumika Chemtex Co., Ltd.) is difficult. A tricot (course 75 / 2.54 cm, wale 74 / 2.54 cm) subjected to flame processing (phosphate ester flame retardant) was used.
Next, the following treatment liquid containing a hydrophilic compound was applied to the tricot by a padding method. The pick-up of the processing liquid with respect to the tricot was 60%.
(Processing liquid)
Hydrophilic compound (compound of general formula (6)) 1.0% by mass
Compound having carbodiimide group (carbodiimide equivalent: 385) 0.1% by mass
Ammonium persulfate 0.1% by mass
98.8% by mass of water
Subsequently, the treatment was carried out for 10 minutes in an atmospheric steamer at 105 ° C., and the hydrophilic compound was polymerized on the surface of the polyester fiber. Next, it was washed with hot water and dried at 120 ° C. The adhesion amount of the hydrophilic compound was 0.6% by mass.

Next, a treatment liquid containing the following anionic compound was applied to the tricot by a padding method (pickup 65%) and dried at 120 ° C. The adhesion amount of the anionic compound was 0.24% by mass. A finishing set was performed at 160 ° C. for 30 seconds to obtain a vehicle interior fabric used as a car seat skin material.
(Processing liquid)
Anionic compound (phosphate ester antistatic agent: solid content 40% by mass) 1.0% by mass
99.0% by mass of water

In order to see the effect of the presence or absence of raising treatment, a treatment solution containing an anionic compound was applied by padding method, dried, and then raised product 1 (loop pile), raised product 2 (cut pile) subjected to raising treatment, Moreover, the raising | fluff product which does not perform a raising process was created, and these human body voltage and flame-retardant performance were described in Table 1.
In addition, about the raising goods 1 and the raising goods 2, the silicone type raising agent was provided before raising process.

(Example 2)
A vehicle interior fabric used for a car seat skin material was obtained in the same manner as in Example 1 except that the amount of the hydrophilic compound in the treatment liquid containing the hydrophilic compound was 1.5% by mass. The human body voltage and flame retardancy are shown in Table 1.

(Example 3)
Instead of the phosphate ester antistatic agent contained in the treatment liquid containing the anionic compound, an anionic compound alkyl sulfonate type antistatic agent: Delion A-016 (active ingredient: 40%, Kitahiro Chemical Co., Ltd.) A vehicle interior fabric used for a car seat skin material was obtained in the same manner as in Example 1 except that it was used. The human body voltage and flame retardancy are shown in Table 1.

Example 4
A warp pile fabric (moquette) was prepared (cut pile) using polyester fiber (regular polyester of 84 dtex / 72 filaments) as the polyester fiber fabric. Thereafter, dyeing (dispersion dye: Sumikaron Yellow S-ERPD, manufactured by Sumika Chemtex Co., Ltd.) was performed simultaneously with flameproofing (phosphate ester flameproofing agent).
Next, the following treatment liquid containing a hydrophilic compound was applied to the warp pile fabric by a padding method. The pick-up of the processing liquid with respect to the moquette was 65%.
(Processing liquid)
Hydrophilic compound (compound of general formula (7)) 1.0% by mass
2-Acrylamide 2-methylpropanesulfonic acid 0.1% by mass
Compound having an aziridine group (three aziridine groups) 0.1% by mass
Ammonium persulfate 0.1% by mass
98.7% by weight of water
Subsequently, the treatment was carried out for 10 minutes in a normal pressure steamer at 105 ° C. to polymerize the hydrophilic compound on the surface of the polyester fiber. Next, it was washed with hot water and dried at 120 ° C. The adhesion amount of the hydrophilic compound was 0.6% by weight.

  Next, a treatment liquid containing the following anionic compound is applied to the warp pile fabric by padding (pickup 65%), dried at 120 ° C., and then finished at 160 ° C. for 30 seconds. A car seat skin material was obtained.

(Processing liquid)
Anionic compound (phosphate ester antistatic agent: solid content 40% by mass) 1.0% by mass
99.0% by mass of water

(Comparative Example 1)
The vehicle interior used in the car seat skin material processed in the same manner as in Example 1 except that the treatment with the treatment liquid containing the hydrophilic compound was not performed and the treatment with the treatment liquid containing the anionic compound was not performed. A fabric was obtained. The human body voltage and flame retardancy are shown in Table 1.

(Comparative Example 2)
Except not having processed with the processing liquid containing an anionic compound, the process similar to Example 1 was performed and the fabric for vehicle interiors used for the skin material for car seats was obtained. The human body voltage and flame retardancy are shown in Table 1.

(Comparative Example 3)
A vehicle interior fabric used for a car seat skin material is treated in the same manner as in Example 1 except that the treatment with the treatment liquid containing the anionic compound is not carried out and the addition amount of the hydrophilic compound is 4 mass%. Got. The human body voltage and flame retardancy are shown in Table 1.

(Comparative Example 4)
A vehicle interior fabric used for a car seat skin material was obtained in the same manner as in Example 1 except that the treatment with the treatment liquid containing the hydrophilic compound was not performed. The human body voltage and flame retardancy are shown in Table 1.

(Comparative Example 5)
Except for using 2 wt% of cationic antistatic agent: TA305 (active ingredient: 21 mass%, manufactured by Kitahiro Chemical Co., Ltd.) instead of the phosphate ester antistatic agent contained in the treatment liquid containing an anionic compound. In the same manner as in Example 1, a vehicle interior fabric used as a car seat skin material was obtained (cut pile). The human body voltage and flame retardancy are shown in Table 1.

(Comparative Example 6)
Instead of the phosphate ester antistatic agent contained in the treatment liquid containing an anionic compound, nonionic antistatic agent: Nispol FE26 (active ingredient: 21% by mass, manufactured by Nikka Chemical Co., Ltd.) 2% by mass is used. A vehicle interior fabric used as a car seat skin material was obtained in the same manner as in Example 1 except that (cut pile). The human body voltage and flame retardancy are shown in Table 1.
(Comparative Example 7)
Except for using the amphoteric antistatic agent: TA300 (active ingredient: 20% by mass, manufactured by Kitahiro Chemical Co., Ltd.) 2% by mass in place of the phosphate ester antistatic agent contained in the treatment liquid containing the anionic compound. In the same manner as in Example 1, a vehicle interior fabric used as a car seat skin material was obtained (cut pile). The human body voltage and flame retardancy are shown in Table 1.

As shown in the results of Table 1, when the functional fiber fabrics of Examples 1 to 4 of the present invention are used as the car seat skin material, the human body band even in friction with any of polyester, wool, and cotton clothes The voltage was 3000 V or less, and it was found that the antistatic property was greatly improved as compared with Comparative Example 1 where no treatment was performed. In addition, it was also found from comparison between Example 1 and Example 3 that the anionic compound to be imparted is a phosphate ester compound, thereby improving the antistatic property.
On the other hand, in Comparative Example 2 in which only the hydrophilic compound was polymerized, a human body voltage exceeding 3000 V was obtained in a friction test with wool and cotton clothes, and it was found that the antistatic property was inferior to that of the Example. Here, when the amount of hydrophilic compound applied is increased, the human body voltage decreases in the friction test with cotton clothes, but the human body voltage increases in the friction test with polyester clothes, It was found that the antistatic property in friction with the polyester clothes was lowered.
Further, as in Comparative Example 3, when only an anionic compound was applied to the polyester fiber fabric, a human body voltage exceeding 3000 V was obtained in a friction test with a woolen garment, and the antistatic property was inferior to that of the Example. I understood that.
Furthermore, in Comparative Examples 4 to 6 in which a cation, nonion, and amphoteric compound were applied to the polyester fiber fabric instead of the anionic compound, the human body voltage exceeded 3000 V in the friction test with any of the three types of clothes, It was found that the antistatic property was inferior to that of the example.
As for the form of the fabric, as in the results of Examples 1 to 4, even if there is no raising, even if the pile is a loop or a cut, the human body voltage is 3000 V or less in the friction test with three kinds of clothes. It was found that the antistatic property was exhibited.

Claims (5)

  A vehicle interior fabric in which a hydrophilic compound is polymerized on a fiber surface, and an anionic compound is adhered to the surface of the fabric.   The fabric for vehicle interior according to claim 1, wherein the hydrophilic compound is a compound having a polyoxyalkylene group and having two or more polymerizable double bonds.   The vehicle interior fabric according to claim 1 or 2, wherein the anionic compound is a phosphate ester compound.   The fabric for vehicle interior according to any one of claims 1 to 3, wherein the form forms a pile fabric.   The skin material for car seats containing the fabric for vehicle interiors as described in any one of Claims 1-4.