JP2001288679A - Minus ion-generating member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a minus ion-generating member which exhibits excellent functions such as a heat-insulating property and a deodorizing property due to the generation of minus ions and the effect of far IR light. SOLUTION: This minus ion-generating member characterized by generating minus ions in an amount of >=500 ions/cc under an environment having a >2 mm amplitude frequency of >=10 Hz or under an environment having a repeated pressure of >=500 Pa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a negative ion generating member that generates negative ions only in a special environment. A strong negative ion can be generated at all times, and it is suitably used for seat covers of car interior parts.

[0002]

2. Description of the Related Art In recent years, environmental problems such as global warming and acid rain have been widely taken up. In particular, it is said that, in daily life in urban areas, positive ions in the air due to exhaust gas and the like increase and negative ions decrease, which has an adverse effect on our bodies and the environment. It is said that when positive ions increase compared to negative ions, oxidative decay, abnormalities in the body, and aging progress, and our bodies, environment, plants, and water are now weakly acidic. Therefore, the negative ion effect is to create the negative ions that are missing and reduce them to neutrality. Negative ions occur abundantly in forests, waterholes, shorelines, etc., which are naturally rich in water,
It has a healing effect that calms the hearts of people.

[0003] Tourmaline ores have been found to emit such negative ions. This tourmaline, also called tourmaline, is a substance that has a permanent spontaneous electric polarization, but generates negative ions due to external stress. For example, Japanese Patent Publication No. 6-104926 proposes an electret fiber in which finely divided tourmaline is fixed or contained in an organic fiber.

[0004] However, originally, the negative ions generated by tourmaline itself were weak, and there was no material for constantly generating a strong negative ion.

[0005]

SUMMARY OF THE INVENTION In view of the background of the prior art, an object of the present invention is to provide a negative ion generating member which always generates a strong negative ion under specific conditions.

[0006]

The present invention has the following arrangement to solve the above-mentioned problems.

That is, in the present invention, in an environment having an amplitude of 2 mm or more and a frequency of 10 Hz or more, or an environment of a repetitive pressure of 500 Pa or more, the negative ion
The present invention relates to a negative ion generating member that generates at least 00 / cc.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A negative ion generator according to the present invention provides a member containing a negative ion generating material with an amplitude of 2 mm.
In an environment where the above frequency is 10 Hz or more, or in an environment where the repetitive pressure is 500 Pa or more, negative ions are generated by externally applying stress. Due to external stress, a member containing a negative ion generating material such as an inorganic porous material is distorted, and polarization occurs in the crystal structure to generate negative ions.

In the present invention, as a member containing a negative ion generating substance, a fibrous structure has tourmaline ore or pores having an average pore radius of 20 nm or more and a specific surface area of 20 m ² / g or more. A member having a certain inorganic porous material and a binder is preferably used.

[0010] When the external stress is vibration, it is preferable to fix the negative ion generating member to a portion that constantly vibrates, because generation of negative ions can be promoted. Specific examples include interiors of automobiles and the like, train seat covers, and electric massage machine covers.

When the external vibration is caused by a sound wave, it is preferable to use the negative ion generating member at a position where the sound wave is always applied. In this case, a large amount of negative ions can be expected by covering the entire speaker with a fiber structure containing a substance that generates negative ions.

When the external stress is pressure, it is preferable to use the negative ion generating member at a position where pressure is repeatedly applied. Specifically, the negative ion generating member is used for applications such as chair covers, sheets, beds, and pillow covers. It is preferably used.

[0013] Further, since there is no problem such as a feeling in a part where the person does not directly touch, a large amount of negative ion generating material is added to a plate-shaped, massive, rod-shaped plastic, metal, wood, etc. other than the fiber structure. By attaching or impregnating it to a part that receives vibration or pressure, a strong negative ion can always be generated.

In the present invention, as tourmaline ore, ore called so-called tourmaline is preferably used. In addition, the fine particles having a form of fine particles having a particle size of 0.1 μm to 50 μm, and further having a particle size of 0.1 μm to 1.0 μm, when processed, generally have a liquid state in which the fine particles are mainly composed of a binder. In the case of taking, it is preferable in terms of dispersibility. In addition, although it is composed of a very large number of elements as its constituent components, Mg, Fe, Li, Al, Na, B, Si, K,
Desirably, Ca, Mn, O, and H are contained.

In the present invention, the average pore radius is 20 nm.
An inorganic porous material having the above pores and a specific surface area of 20 m ² / g or more can be preferably used. As the pore radius increases, the voids increase and the specific surface area generally increases. A large pore radius and a large specific surface area mean that the activity increases by increasing the contact area with gas (air) or liquid (water). In the present invention, in this sense, those having pores with an average pore radius of 20 nm or more and a specific surface area of 20 m ² / g or more are preferably used. The average pore radius is used to smoothly pass gases such as air and liquids such as water in inorganic substances, and to enhance activities such as generation of negative ions, emission of far-infrared rays, and adsorption of odorous components. Is preferably 20 nm or more, more preferably 30 nm or more, from the viewpoint that larger is better. The specific surface area is made that there is a gap larger, from the viewpoint of contact with the same gaseous or liquid and pore radius is increased, 20 m ² /
g or more, and preferably 30 m ² / g or more. Here, the average pore radius is measured according to a mercury intrusion method pore distribution measurement (PD) method using a Carlo Elva 2200 type apparatus. The specific surface area is QUANTA CHROME
It is measured according to a specific surface area measuring method using an apparatus of QUANTA SORB OS-8 manufactured by KK.

The material of the inorganic porous material may be any inorganic material, such as porous mud, clay, diatomaceous earth, bamboo charcoal, charcoal, coconut shell activated carbon, coal-based activated carbon, zeolite, and pearlite. Above all, natural inorganic porous mud is preferably used, and various nekton (shells, fish), plankton (microorganisms), and algae in the sea and lakes were buried and deposited mainly due to crustal deformation several thousand years ago. Presumed mud distributed in a specific area is preferably used. For example, it is included in the fault in the mountains of Tanagura-cho, Higashishirakawa-gun, Fukushima Prefecture and Shigaraki-cho, Koka-gun, Shiga Prefecture. These mud often contain silicon dioxide and aluminum oxide. In particular, when silicon dioxide contains at least 40% by weight and aluminum oxide at least 7% by weight, it tends to have a porous structure as a natural product. This is particularly preferred. Natural porous mud is preferable because it emits far-infrared rays at 35 ° C.

The form of the inorganic porous material is not particularly limited. However, the inorganic porous material may be in the form of particles because of its texture as a fibrous structure, application through a binder, and excellent dispersibility. Is preferably used. Further, in terms of dispersibility in water and the like, the average particle size is 0.0
1 to 5 μm, preferably 0.01 to 1 μm
m is good. It is preferable to use an inorganic dispersant or an organic dispersant as a dispersion stabilizer in a ratio of 0.05 to 10% by weight based on the porous material. In addition, a dry pulverizer, a wet pulverizer, or the like can be used to make the porous material finer.

In the present invention, the binder is a resin that serves to attach tourmaline ore or an inorganic porous material to a fibrous structure or the like.
Acrylic, polyurethane, silicone, fluorine, melamine, glyoxal resins and the like may be used from the viewpoint of washing durability.

In the present invention, those obtained by firing the porous material are also preferably used. A method of kneading a glass powder and a clay powder into a porous material at the time of firing and then sintering the mixture into a predetermined shape is preferable for ceramicization. The firing temperature at this time is preferably from 1000 to 1500 ° C., which tends to be microporous. The fired ceramic may be dispersed in water and finely divided by the above method.

In the present invention, in order to adhere the tourmaline ore or the inorganic porous material on the fiber surface, an aqueous dispersion of the tourmaline ore or the inorganic porous material and an aqueous binder solution are mixed to form a processing solution. After impregnating the fiber cloth with this processing liquid, it is squeezed to a certain amount with a mangle roll or the like, and then goes through a dry curing process, or the processing liquid is adjusted to an appropriate viscosity, and is then coated with a knife coater, gravure roll coater, printing, or the like. After application, it is fixed at a temperature of 200 ° C. or less.

The amount of the tourmaline ore and the inorganic porous material adhered to the fiber structure having a negative ion generating material is preferably 0.03 to 0.03 in view of the effect and the texture of the fiber structure.
It is preferably 15% by weight, more preferably 0.1 to 10% by weight.

The negative ion generating member of the present invention has a healing effect due to the generation of negative ions by tourmaline ore or an inorganic porous material. When worn as an undergarment, the porous material emits far-infrared rays at the temperature according to the body temperature to increase the skin surface temperature, thereby obtaining a heat retaining effect. Also, because the porous material is microporous, ammonia,
Adsorbs odorous components such as acetic acid and mercaptan to exhibit deodorant properties.

[0023]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples. The percentages and parts in the examples are on a weight basis unless otherwise specified. The quality evaluation in the examples was performed according to the following method. <Measurement of average pore radius> Mercury intrusion method pore distribution measurement (PD) device: Carlo Elva Model 2200 Enlarged photograph taken by SEM <Specific surface area measurement> Device: QUANTA manufactured by QUANTA CHROME
SORB OS-8 measurement conditions: DET-1 point method, flow method, TDC detection Pretreatment: 250 ° C. for 15 minutes under N ₂ <Measurement of negative ions> Equipment: AIR ION COUNTER (USA) Measurement conditions: room temperature 20 ± 1 ° C. Humidity 50 ± 3%. Indoor size 3 × 5 × 5m.

Measurement time 5 minutes. Suction volume 60 L / min.

Sample oscillation period: The unit is Hz, see the table (amplitude is 5 mm).

Sample repetition pressure: Unit: Pa, see table.

Sample size 20 × 20 cm Evaluation: Average amount of negative ions generated during 5 minutes measurement time:
Unit: pcs / CC <Measurement of far infrared rays> Apparatus: Fourier transform infrared spectrophotometer (FTIR)
Model JIR-E500 Measurement conditions: Resolution 1 / 16cm. Number of integration 200 times.
Detector MCT.

Measurement temperature: 35 ° C. Evaluation: Average emissivity to black body (%) <Measurement of skin surface temperature> Apparatus: Thermography AV10 TV-200 “Sensitivity: 0.01 ° C. Range: -20 to 200 ° C.” Sample: Underwear is manufactured using the processed cloth of the present invention and the unprocessed cloth.

Measurement room conditions: room temperature 21.5 ± 0.5
° C, humidity 65 ± 1%.

Measurement method: The subject is allowed to acclimate to the indoor environment by sitting on a chair for one hour in the measurement room without upper body. Thereafter, the subject was allowed to wear underwear on his / her upper body, and sat down for 30 minutes to maintain a resting state, and after 30 minutes passed, the underwear was removed, and the subject was put in the same resting state. Immediately before wearing underwear and 10 minutes after putting on and taking off the underwear, thermography 5
The skin temperature at the site was measured. The subject at this time was 5
People. Evaluation: Calculate the average temperature at each of the five measurement points,
The temperature difference before and after wearing on the raw cloth was obtained. The temperature difference was a work cloth-unprocessed cloth of five subjects. <Evaluation of deodorization rate using detector tube> A 500 cm polyethylene container was filled with a work cloth of 10 cm × 10 cm, and ammonia gas was sealed so that the initial concentration became 200 ppm. The ammonia gas concentration was measured. The deodorization rate was calculated by the following equation. Deodorization rate (%) = ([initial density]-[residual density after 30 minutes]) / [initial density] × 100 Example 1 65% by weight of polyester having an average fineness of 3.3 dtex and 35% by weight of cotton % Spun yarn with a basis weight of 200%
The g / m ² fabric was scoured, dried, intermediate set and dyed.

Further, as a tourmaline ore, the average particle size is 5 μm, and (Na, Ca) (Li, Al, Mg, F
e, Mn) ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ . The ore was atomized and dispersed in a wet disperser using sodium hexametaphosphate as a dispersant. The average particle size of this dispersion is 0.5 μm (Shimadzu Laser Diffraction Viscometer SALD-2)
000 J) and the pH was 8.1. The addition amount of sodium hexametaphosphate (dispersant) in this dispersion was 5
By weight, the amount of tourmaline ore added was 20% by weight. This processing agent was referred to as processing liquid A.

Next, after immersion in a treatment solution having the following composition, squeezing with a mangle (80% squeezing rate), drying at 130 ° C. for 2 minutes, and performing dry heat treatment with a pin tenter at 180 ° C. for 30 seconds, the functionalized cloth A was obtained. At this time, the amount of the attached inorganic substance was 0.8% by weight and the amount of the acrylic resin was 0.5% by weight based on the fiber cloth.

Formulation of treatment liquid (aqueous dispersion) Processing liquid A (concentration 20%) 50 g / l Acrylic binder (concentration 45%) 15 g / l Using functionalized processing cloth A and unprocessed cloth for comparison, minus Deodorization rate of ammonia gas by ion and detector tube,
Table 1 shows the measurement results of the skin surface temperature. Example 2 The dyed fabric used in Example 1 was used as a base fabric.

Further, as the inorganic porous material, an ancient marine humic mud contained in a fault in the mountains of Tanagura-machi, Fukushima Prefecture was used. The average pore radius of this mud is 45 nm and the specific surface area is 4
1.0 m ² / g. As a result of analysis of the composition, the main components were 56.2% of silicon dioxide, 12.5% of aluminum oxide, 4.3% of iron oxide, and 3% of calcium oxide.
The content was 5%, magnesium oxide 1.6%, sulfur 1.0%, and moisture 8.0%. As a result of measuring the far infrared ray, the emissivity was 88%.

The mud was atomized and dispersed in a wet disperser using sodium hexametaphosphate as a dispersant. The average particle diameter of this dispersion was 0.47 μm (measured by a laser diffraction type viscosity distribution meter SALD-2000J manufactured by Shimadzu Corporation), and the pH was 8.3. The addition amount of sodium hexametaphosphate (dispersant) in this dispersion was 5%, and the addition amount of mud was 20%. This processing agent was used as processing liquid B. Next, after being immersed in a treatment solution having the following composition, it is squeezed with a mangle (squeezing ratio 8
0%), dried at 130 ° C. × 2 minutes, and then
A dry heat treatment was performed at 0 ° C. for 30 seconds to obtain a functionalized cloth B. At this time, the amount of the attached inorganic substance was 0.8 to the fiber cloth.
% And acrylic resin were 0.5%.

Mixing of treatment liquid (aqueous dispersion) Processing liquid B (concentration 20%) 50 g / l Acrylic binder (concentration 45%) 15 g / l Using functionalized treated cloth B and untreated cloth for comparison, minus Deodorization rate of ammonia gas by ion and detector tube,
Table 1 shows the measurement results of the skin surface temperature. Example 3 Processing was performed in the same manner as in Example 1 except that the blended amount of the dyed cloth used in Example 1 and the processing liquid A used in Example 1 was changed to 25 g / l to obtain a processed cloth C.

Mixing of treatment liquid (water dispersion) Processing liquid A (concentration 20%) 25 g / l Acrylic binder (concentration 45%) 15 g / l Deodorization rate of ammonia gas by ion and detector tube,
Table 1 shows the measurement results of the skin surface temperature. Example 4 Processing was performed in the same manner as in Example 2 except that the blending amount of the dyed cloth used in Example 1 and the processing liquid B used in Example 2 was changed to 25 g / l, and a processed cloth D was obtained.

Mixing of treatment liquid (aqueous dispersion) Processing liquid B (concentration 20%) 25 g / l Acrylic binder (concentration 45%) 15 g / l Using functionalized work cloth D and unprocessed cloth for comparison, minus Deodorization rate of ammonia gas by ion and detector tube,
Table 1 shows the measurement results of the skin surface temperature. Example 5 The ancient marine humic mud used in Example 2 was made into a 200-mesh powder, and 85% of this powder was mixed with 15% of a 200-mesh powder composed of soda glass powder and clay, and kneaded to form granules. Next, it was deaerated and fired in an electric furnace at 1050 ° C. for 20 hours to produce a porous ceramic. The same sodium hexametaphosphate as in Example 1 was used as a dispersant, and the mixture was atomized and dispersed by a wet disperser. The average particle size of this dispersion was 0.55 μm (measured with a laser diffraction type viscosity distribution meter SALD-2000J manufactured by Shimadzu Corporation). The addition amount of sodium hexametaphosphate (dispersant) in this dispersion was 5 times utilization, and the addition amount of porous ceramics was 20% by weight. This dispersion was used as working liquid C. The same processing as in Example 2 was performed to obtain a work cloth E.

Mixing of treatment liquid (water dispersion) Processing liquid C (concentration 20%) 50 g / l Acrylic binder (concentration 45%) 15 g / l Using functionalized work cloth E and unprocessed cloth for comparison, minus Deodorization rate of ammonia gas by ion and detector tube,
The skin surface temperature was measured, and the results are shown in Table 1. Comparative Example 1 As an inorganic porous material, ancient lake bottom humic mud contained in a fault in Mt. Owari Fuji in Inuyama City, Aichi Prefecture was used. This mud has an average pore radius of 18 nm and a specific surface area of 18.0 m ² / g.
Met. Analysis of the composition revealed that the main components were silicon dioxide 30.5%, aluminum oxide 3.8%, iron oxide 9.8%, calcium oxide 5.9%, magnesium oxide 4.3% and sulfur 0.3%. % And the water content was 9.5%. As a result of measuring the far infrared ray, the emissivity was 53%.

This mud was atomized and dispersed in a wet disperser using sodium hexametaphosphate as a dispersant. The average particle diameter of this dispersion was 0.39 μm (measured with a laser diffraction type viscosity distribution meter SALD-2000J manufactured by Shimadzu Corporation), and the pH was 8.2. The addition amount of sodium hexametaphosphate (dispersant) in this dispersion was 5% by weight, and the addition amount of mud was 20% by weight. This processing agent was used as processing liquid D.

Next, the finished dyed fabric used in Example 1 was immersed in a treating solution having the following composition, squeezed with a mangle (squeezing ratio: 80%), dried at 130 ° C. for 2 minutes, and dried at 180 ° C. with a pin tenter. A dry heat treatment was performed for 30 seconds to obtain a work cloth G.
At this time, the amount of the attached inorganic substance was 0.8% by weight and the amount of the acrylic resin was 0.5% by weight based on the fiber cloth.

Processing liquid formulation (water dispersion) Processing liquid D (concentration: 20%) 50 g / l Acrylic binder (concentration: 45%) 15 g / l Using functionalized cloth G and unprocessed cloth for comparison, minus Deodorization rate of ammonia gas by ion and detector tube,
Table 1 shows the measurement results of the skin surface temperature.

In addition, a practical wearing test was performed on the ceiling cloth of the car and the cover of the seat for each of the work cloths of Examples 1 to 5, and as a result, eight of the ten panelists no longer became irritated while driving, or fell asleep. There was an effect such as disappearance at all. The other two did not understand the effect.

Further, the actual wearing test of the work cloths of Examples 1 and 2 was carried out with a train, a seat cover of an electric massage machine, a bed, a futon, a sleeping bag, and a pillow cover with 30 panelists. The effect of promoting health was obtained, for example, 26 persons were tired and felt comfortable after use.

The working cloth of Comparative Example 1 was also tested for actual use of car ceiling materials and seat covers, trains, electric massage machine seat covers, and beds, futons, sleeping bags, and pillow covers. Only 23% of the respondents answered that they felt effective or comfortable after use.

[0046]

[Table 1]

[0047]

The negative ion member of the present invention always emits strong negative ions under specific conditions, and has both a deodorizing function and a far-infrared effect.

Continued on front page F-term (reference) 3D023 BA01 BB01 BC00 BD00 BE04 BE31 4L031 AB01 BA09 BA20 BA24 DA00 DA13

Claims (8)

[Claims] 1. A negative ion generating member which generates 500 or more negative ions / cc in an environment having an amplitude of 2 mm or more and a frequency of 10 Hz or more or an environment of a repetitive pressure of 500 Pa or more. 2. The member according to claim 1, wherein the fibrous structure has tourmaline ore or an inorganic porous material having pores with an average pore radius of 20 nm or more and a specific surface area of 20 m ² / g or more. And a binder. 3. The negative ion generating member according to claim 2, wherein said tourmaline ore or said porous substance is present in a ratio of 0.1 to 10% by weight based on said fibrous structure. 4. The method according to claim 1, wherein said inorganic porous material comprises silicon dioxide.
4. The negative ion generating member according to claim 2, wherein the negative ion generating member contains at least 7% by weight of aluminum oxide. 5. The negative ion generating member according to claim 2, wherein said inorganic porous material is fired. 6. The negative ion generating member according to claim 2, wherein said inorganic porous material emits far infrared rays. 7. The negative ion generating member according to claim 2, wherein said inorganic porous substance has a deodorizing property. 8. Used in at least one application selected from car interior parts, train seat covers, electric massage machine seat covers, bed covers, futon covers, sleeping bag covers and pillow covers. The negative ion generating member according to claim 1.