JPH10182871A - Production of polyurethane foam having antibacterial, deodorant, antimold and insect-repellent properties as well as far-infrared emitting property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polyurethane foam having antibacterial, deodorant, antimold and insect-repellent properties as well as far-infrared-emitting properties. SOLUTION: The production process comprises adding a compound ceramic obtained by mixing a base comprising 20-30wt.% amphibole having a particle diameter of 74μm, 20-30wt.% magnesia, 20-30wt.% silica with 20-30wt.% titanium as an aid to a stock material while it is being mixed in a mixer in the production of a polyurethane foam and supplying the mixture into the expanding machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a foamed polyurethane having far-infrared radiation properties and having antibacterial properties, deodorizing properties, fungicidal properties and insect repellency.

[0002]

2. Description of the Related Art Conventionally, there is no foamed polyurethane having far-infrared radiation properties, antibacterial properties, deodorizing properties, fungicidal properties and insect repellency, and has not been put to practical use.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a composite ceramic produced by mixing a plurality of single component ceramics in a mixing step of mixing and stirring raw materials in a production process of a foamed polyurethane with a mixer. It is another object of the present invention to produce a foamed polyurethane having a far-infrared radiation property and an antibacterial property, a deodorant property, a mold-proof property and an insect-proof property by being charged into a foaming machine and then foamed.

[0004]

According to the present invention, a particle size of 74 μm is provided.
The following amphibole 20-30% by weight, magnesia 20-30
A composite ceramic obtained by adding and mixing 20 to 30% by weight of titanium as an auxiliary material with 20 to 30% by weight of silica and 20 to 30% by weight of silica as a main material is mixed with a raw material in the process of producing polyurethane foam by a mixer. A method of adding and mixing in a mixing step of stirring, and then introducing the mixture into a foaming machine to foam, 20-30% by weight of titanium having a particle size of 74 μm or less, 20-30% by weight of cristobalite, 20-30% by weight of serpentine
A main ceramic, and a composite ceramic obtained by adding and mixing zinc as an auxiliary material in an amount of 20 to 30% by weight is added and mixed in a mixing step of mixing and stirring a raw material in a production process of a foamed polyurethane with a mixer, Then, a method of throwing into a foaming machine and foaming, amphibole 20 having a particle size of 74 μm or less.
30% by weight, magnesia 40-60% by weight, titanium 10
~ 15% by weight as the main material and zinc as an auxiliary material
A method in which a composite ceramic obtained by adding and mixing 15% by weight is added and mixed in a mixing step of mixing and stirring raw materials in a manufacturing process of a foamed polyurethane with a mixer, and then charged into a foaming machine to foam. 20 to 30% by weight of magnesia having a particle size of 74 μm or less, 20 to 30% by weight of silica, and 20 to 30% by weight of titanium, and 20 to 30% by weight of zinc as an auxiliary material. A method in which the composite ceramics are added and mixed in a mixing step of mixing and stirring the raw materials in the production process of the foamed polyurethane with a mixer, and then charged into a foaming machine to foam, 10 to 15 weight% of silica having a particle size of 74 μm or less. %, 20 to 30% by weight of cristobalite, 40 to 60% by weight of serpentine, and 10 to 15% by weight of titanium as an auxiliary material. A method in which Lamix is added and mixed in a mixing step of mixing and stirring the raw materials in the production process of the foamed polyurethane with a mixer, and then charged into a foaming machine and foamed. Amphibolite 20 to 30 having a particle size of 74 μm or less.
Weight%, cristobalite 20-30 weight%, serpentine 20
-30% by weight as a main material, and titanium 20
The composite ceramics obtained by adding and mixing 30% by weight is added and mixed in a mixing step of mixing and stirring the raw materials in the production process of the foamed polyurethane with a mixer, and then charged into a foaming machine to foam. Method: 20 to 30% by weight of amphibole having a particle diameter of 74 μm or less, 20 to 30% by weight of magnesia, 20 to 30% by weight of silica as a main material, and adding and mixing 20 to 30% by weight of zinc as an auxiliary material. In the mixing step of mixing and stirring the raw materials in the manufacturing process of foamed polyurethane with a mixer, the obtained composite ceramics are added and mixed, and then charged into a foaming machine and foamed. Has solved the above-mentioned problem.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Among single component ceramics,
Magnesia has a far-infrared emissivity of 95%,
It has an antibacterial rate close to 100% against Escherichia coli and staphylococci, but the deodorization rate against ammonia and hydrogen sulfide is not so high. Serpentine has a far-infrared emissivity of 94%, and against staphylococci. It has an antibacterial rate close to 100%, has only a moderate antibacterial rate against Escherichia coli at 65%, and has a deodorizing rate of 100% against hydrogen sulfide, but has a medium antibacterial rate against ammonia of 50%. It has a deodorization rate of only about 100%, and silica has a far-infrared emissivity of 97% and a deodorization rate of 100% for hydrogen sulfide and 94% for ammonia. It is known that the antibacterial rate against streptococci is not so high. However, there is no single-component ceramic which has been measured for its fungicidal resistance and its repellency against insects such as fleas and ticks.

In view of the above, the present inventor individually measured far-infrared emissivity, antibacterial rate, deodorizing rate, fungicide resistance and repellent rate of a single-component ceramic, and determined any one of the above measurement items. If ceramics excellent in the items and other ceramics are mixed to form a composite ceramic, the synergistic effect of each ceramic will result in a composite ceramic that has far-infrared radiation properties, antibacterial properties, deodorization properties, mold resistance and insect repellency. I think that I can get it,
As a result of intensive studies, a composite ceramic used in the present invention was obtained.

The far-infrared emissivity, antibacterial rate, deodorizing rate, hydrogen ion concentration, fungicide resistance and repellent rate of a single component ceramic as a material of the composite ceramics used in the present invention are shown in Table 1. Were obtained. The anti-mold resistance is JIS Z 2
911.

[0008]

[Table 1]

From the measurement results in Table 1, the far-infrared emissivity and the repellency of the ceramics except for zinc are 92-97% and 90-97%, respectively, and the hydrogen ion concentration of all ceramics containing zinc is high. Is 7.9-9.
It was found that all of the samples in No. 3 belonged to the alkaline region, and that the antifungal resistance was in the range of moderate to high ratio of 2-3.

And amphibole is 8 against Staphylococcus.
Although it has an antibacterial rate of 2%, it has only a moderate antibacterial rate of 50% against Escherichia coli and 50% against ammonia.
%, 65% against hydrogen sulfide, all of which have a moderate deodorization rate. Magnesia has an extremely high antibacterial rate of 100% against Escherichia coli and 98% against staphylococci, but has a very high antibacterial rate against ammonia. 25%, 45 against hydrogen sulfide
%, And silica has only a low antibacterial rate of 20% against E. coli and 35% against staphylococci, but as high as 100% against hydrogen sulfide and 94% against ammonia. It was found to have a deodorizing rate.

And titanium is 38 against E. coli.
%, Only 29% antibacterial against staphylococci, only 35% against ammonia, 40% against hydrogen sulfide, both antibacterial and deodorizing rates are low. Low antibacterial rate of 35% against staphylococci, but high deodorization rate of 93% against ammonia and 98% against hydrogen sulfide,
Serpentine has an antibacterial rate of 98% against staphylococci, has only a moderate antibacterial rate against Escherichia coli and 65%, and has a deodorizing rate of 100% against hydrogen sulfide.
It was found that ammonia had only a moderate deodorization rate of 50%. In addition, zinc has an antibacterial rate of only 25% against Escherichia coli and 30% against staphylococci, a deodorizing rate of only 35% against ammonia, and 45% against hydrogen sulfide. Both rates were found to be low.

Titanium or zinc having low antibacterial and deodorizing rates have an effect of activating the other ceramics by mixing with the other ceramics.
It can be used as an auxiliary material to be added to and mixed with the main material. When titanium is one of the main materials, zinc is an auxiliary material.

From the above measurement results, three types of ceramics having excellent far-infrared emissivity, antibacterial rate and deodorization rate were selected as main materials, and titanium, zinc, or titanium was used as an auxiliary material. In the case of one kind, by adding and mixing zinc as an auxiliary material, a composite ceramic having far-infrared radiation properties, antibacterial properties, deodorization properties, fungicidal properties and insect repellency was obtained.

Hereinafter, a method for producing a composite ceramic used in the method of the present invention will be described in detail. The particle size of each single component ceramic constituting the composite ceramic is 7
It is necessary to use a fine powder of 4 μm or less, and when these ceramics are mixed, the physical properties such as specific gravity, moisture, humidity, etc. of the ceramics are different from each other, and the ceramics used as the main material and the mixed material are granulated. Diameter 74
Since it is a fine powder of μm or less, agglomeration easily acts, and it is not very easy to uniformly mix the ceramics.

Therefore, the present inventor puts each of the main and auxiliary ceramics into a mixer at a predetermined mixing ratio and mixes and stirs the mixture. Then, the mixture is charged into a pulverizer and pulverized. The above-mentioned pulverized material is again put into the mixer, mixed and stirred, and then, the step of again being charged into the pulverizer and pulverized is repeated for about 30 minutes. Composite ceramics in which ceramics were uniformly mixed could be manufactured.

In order to stabilize the chemical properties of the uniformly mixed composite ceramics, the composite ceramics is fired by a firing machine at a calcining temperature of 200 to 500 ° C. Ceramics.

That is, amphibole 20 having a particle size of 74 μm or less.
-30% by weight, magnesia 20-30% by weight, silica 2
0 to 30% by weight as the main material and titanium 2
A composite ceramic obtained by adding and mixing 0 to 30% by weight, or titanium having a particle size of 74 μm or less 20 to 30% by weight, cristobalite 20 to 30% by weight, serpentine 20 to 3
0% by weight as the main material, and zinc as an auxiliary material
% By weight of a composite ceramic obtained by adding and mixing, or 20 to 30% by weight of amphibole having a particle size of 74 μm or less, 40 to 60% by weight of magnesia, and 10 to 15% by weight of titanium. A composite ceramic obtained by adding and mixing 10 to 15% by weight of zinc, and 20 to 30% by weight of magnesia having a particle size of 74 μm or less, 20 to 30% by weight of silica, and 20 to 30% by weight of titanium as main materials. A composite ceramic obtained by mixing 20 to 30% by weight of zinc as an auxiliary material, and a silica having a particle size of 74 μm or less.
A composite ceramic obtained by adding and mixing 15% by weight, 20-30% by weight of cristobalite, 40-60% by weight of serpentine and 10-15% by weight of titanium as an auxiliary material, and also having a particle size. Amphibole 20 to 30 of 74 μm or less
Weight%, cristobalite 20-30 weight%, serpentine 20
-30% by weight as a main material, and titanium 20
To 30% by weight of the composite ceramic, and further, amphibole having a particle size of 74 μm or less.
Wt%, magnesia 20-30 wt%, silica 20-3
0% by weight as the main material, and zinc as an auxiliary material
Measure the far-infrared emissivity, antibacterial rate, deodorization rate, fungicide resistance indicating fungicidal properties and repellent rate indicating insect repellent properties against sanitary pests such as fleas and mites, respectively, of the composite ceramics obtained by adding and mixing by weight%. As a result, good measurement results were obtained.

Then, with respect to the composite ceramics mixed at the most preferable mixing ratio of each ceramic shown in Table 2,
When the above measurement items were measured, measured values as shown in Table 3 were obtained. In addition, the composite ceramics obtained at the most preferable mixing ratios in Table 2 were referred to as Composite Ceramics A to E, respectively, and were also applied to Table 3.

[0019]

[Table 2]

[0020]

[Table 3]

From the measurement results in Table 3 above, all of the composite ceramics A to G have an extremely high far-infrared emissivity of 91 to 94%, an antibacterial rate of 92 to 96%, and a deodorization rate of 9%.
The antifungal resistance is extremely high as 1 to 94%, and the fungicide resistance is in the range of medium to high rate of 2 to 3, and the repellent rate showing insect repellency to sanitary pests such as fleas and ticks is also extremely high as 90 to 93%. Was found to be high.

The hydrogen ion concentration of each of the composite ceramics A to G is set at a temperature of 200 to 500 ° C. as described above.
In 8.1 to 8.9, it shows very stable alkaline properties,
There is no change with time of the hydrogen ion concentration. Further, these composite ceramics have a function of generating electric field energy (cations) between grains (between different ceramics) between the ceramics by far-infrared radiation possessed by the ceramics of a single component constituting the composite ceramics. It becomes a composite ceramic having. The reason that the composite ceramic exhibits an alkaline property is that impurities are gasified during the firing process,
This is because the transition to alkaline is more than that of a single component ceramic.

Further, from Table 3 above, the composite ceramics are composite ceramics having cations, become hydrogen ions in an alkaline region, and are stable without a change over time for a long period of one year or more. As a result, in addition to having the far-infrared radiation characteristic, the composite ceramic was found to have antibacterial properties, deodorizing properties, fungicidal properties, and insect repellency.

That is, the antibacterial mechanism of the composite ceramics is that the surface layer (wall) of general living bacteria such as Escherichia coli and staphylococci is an anion, and is therefore in a neutral region (pH 7.0).
0 to 7.5), but the greatest characteristic of the composite ceramic is that cations are generated by far-infrared radiation. At the same time as being destroyed by the cations of the ceramics, the bacterial proteins are denatured and become dyspnea and die.

The deodorizing mechanism of the composite ceramics against ammonia, hydrogen sulfide and the like is not a general effect such as physical adsorption or chemical adsorption, but is not saturated because of a decomposition effect based on far-infrared radiation. As with, it has deodorizing power semi-permanently and has no toxicity.

Furthermore, the composite ceramics has a function of preventing fungi by inhibiting the generation or growth of mold by cations generated by far-infrared radiation. In addition, as with the general living bacteria, the generation of hygiene pests such as fleas and ticks is prevented by the cations of the composite ceramics, and the insect pests do not come close to the sanitary pests.

Next, in order to uniformly mix the raw materials in the known foamed polyurethane production process, the composite ceramics produced by the above production method is added and mixed in a mixing step of mixing and stirring in a mixer.

That is, based on 85 to 88% by weight of a polyol which is a main raw material of a foamed polyurethane, preferably 1 to 4% by weight of a blowing agent such as Freon-11 as an auxiliary agent and 1 to 4% by weight of a stabilizer such as methylene chloride. It is preferable to add and mix 2% by weight and 1 to 2% by weight of a catalyst agent such as a monoamine, and further add and mix 5 to 15% by weight of the composite ceramics, and particularly preferably to 87% by weight of the polyol as the main raw material. On the other hand, it is recommended to add and mix 3% by weight of a foaming agent, 1% by weight of a stabilizer, and 1% by weight of a catalyst, which are auxiliary agents, and 8% by weight of the composite ceramic.

The foamed polyurethane of the present invention is produced by introducing the raw material into which the composite ceramics uniformly mixed and stirred in the mixer is added and mixed into a known foaming machine used for producing foamed polyurethane and foaming. I do. Then, the manufactured foamed polyurethane is cut according to the application.

Table 4 shows a comparison of the physical properties of the foamed polyurethane produced by the production method of the present invention and the general-purpose foamed polyurethane. The measured values of the foamed polyurethane of the present invention in Table 4 are the average values of the foamed polyurethanes produced by adding and mixing the composite ceramics A to G at the most preferable mixing ratios shown in Table 2 with the raw materials. Indicated.

[0031]

[Table 4]

Further, the properties of the far-infrared emissivity, antibacterial rate, deodorizing rate, hydrogen ion concentration, mold resistance, repellent rate and thermal conductivity of the foamed polyurethane produced by the production method of the present invention and the general-purpose foamed polyurethane were measured. Table 5 shows the results. The measured values of the foamed polyurethane of the present invention in Table 5 are the average values of the foamed polyurethanes produced by adding and mixing the composite ceramics A to G at the particularly preferable mixing ratios shown in Table 2 with the respective materials. showed that.

[0033]

[Table 5]

From the measurement results in Table 4 above, it can be seen that the foamed polyurethane produced by the production method of the present invention has physical properties higher than that of the general-purpose foamed polyurethane, since the composite ceramics which is not present in the general-purpose foamed polyurethane is added to the raw material. Although slightly inferior, the difference was very small, and it was found that it was not inferior to general-purpose foamed polyurethane.

Further, from the measurement results in Table 5 above, the foamed polyurethane produced by the production method of the present invention has an extremely high far-infrared emissivity of 93% and 93% against Escherichia coli.
It has a high antibacterial rate of 94% against staphylococci, has a high deodorization rate of 89% against ammonia and 92% against hydrogen sulfide, and has a hydrogen ion concentration of 7.7 in the alkaline region. It has a high rate of fungicide resistance of 3 and a high repellent rate of 93% against insect pests such as fleas and ticks, and a high thermal conductivity of 1.2 Cal / sec · cm · ° C.
Met. That is, it was found that the foamed polyurethane obtained by the production method of the present invention has far-infrared radiation properties, and also has antibacterial properties, deodorizing properties, fungicidal properties and insect repellency.

On the other hand, the far-infrared emissivity of the general-purpose foamed polyurethane is 53%, which is considerably lower than that of the foamed polyurethane of the present invention, and the hydrogen ion concentration is 8.7, which is lower than that of the foamed polyurethane of the present invention. Also belong to a considerably alkaline region. Thermal conductivity is 1.5 Cal /
It has better thermal conductivity at sec · cm · ° C. than the foamed polyurethane according to the present invention. However, the difference in the thermal conductivity is very small. Thus, it can be seen that general-purpose foamed polyurethane does not have much far-infrared radiation characteristics of the foamed polyurethane obtained by the production method of the present invention, and has no antibacterial property, deodorizing property, mold-proofing property and insect-proofing property at all. Was.

By using the foamed polyurethane obtained by the production method of the present invention having the above-mentioned properties as a tatami flooring material, it particularly inhibits the occurrence of sanitary pests such as Escherichia coli, fleas and ticks, and furthermore, molds. Occurrence can also be prevented.

In addition, by using the foamed polyurethane obtained by the production method of the present invention as a heat insulating material or a wall base material, generation of mold is prevented and dew condensation hardly occurs.

Furthermore, mats, cushions, and interior materials of automobiles using conventional general-purpose foamed polyurethane were unsanitary and had become a hotbed for the generation of hygiene pests and mold, and were obtained by the production method of the present invention. The use of foamed polyurethane as a mat, cushion core, or car interior material makes it extremely hygienic and odor-free due to its antibacterial, deodorant, mold-proof and insect-proof properties, and prevents the generation of sanitary insects and mold. In addition, the action of far infrared rays promotes the blood flow of the human body.

[0040]

According to the present invention as described above, in the mixing step of mixing and stirring the raw materials in the production process of the foamed polyurethane with a mixer, the mixing material has far-infrared radiation properties, and is also antibacterial, deodorant, and mildew-proof. By adding and mixing the fine powder of composite ceramics having properties and insect repellency, mixing and stirring with the raw materials, and then throwing it into a conventionally known foaming machine and foaming, it has far-infrared radiation characteristics, and has antibacterial properties,
Foamed polyurethane having deodorizing properties, antifungal property and insect repellency can be produced very simply and using the conventional foamed polyurethane production line as it is. In addition, the foamed polyurethane obtained by the production method of the present invention has far-infrared radiation properties, and also has antibacterial properties, deodorization properties, fungicidal properties and insect repellency. It can prevent the generation of sanitary pests such as fleas and ticks, and can prevent the generation of mold. In addition, it can be used as a heat insulating material or wall base material to prevent the generation of mold and prevent the formation of dew. Absent. Furthermore,
When used as a core material for mats and cushions or as interior materials for automobiles, it has antibacterial properties and deodorizing properties, so it is hygienic and has no odor, does not generate sanitary pests and mold, and acts on human blood by the effect of far infrared rays. Is promoted, and has an effect of being excellent also in health. In addition, the polyurethane foam obtained by the production method of the present invention can be used for various applications, far-infrared radiation properties, antibacterial properties,
The deodorizing property, the antifungal property and the insect repelling property can be respectively exhibited depending on the use of the foamed polyurethane.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08L 75/04 C08L 75/04

Claims (7)

[Claims] The main material is 20 to 30% by weight of amphibole having a particle size of 74 μm or less, 20 to 30% by weight of magnesia, 20 to 30% by weight of silica, and 20 to 30% by weight of titanium as an auxiliary material. Far-infrared radiation characterized in that the obtained composite ceramic is added and mixed in a mixing step of mixing and stirring the raw materials in the manufacturing process of the foamed polyurethane with a mixer, and then charged into a foaming machine and foamed. A method for producing a foamed polyurethane having properties and having antibacterial properties, deodorizing properties, fungicidal properties and insect repellency. 2. 20 to 30% by weight of titanium having a particle size of 74 μm or less, 20 to 30% by weight of cristobalite, and 20 to 3 of serpentine.
0% by weight as the main material, and zinc as an auxiliary material
The composite ceramics obtained by adding and mixing by weight% is added and mixed in the mixing step of mixing and stirring the raw materials in the production process of the foamed polyurethane with the mixer, and then the mixture is put into the foaming machine to foam. A method for producing a foamed polyurethane having anti-bacterial properties, deodorizing properties, fungicidal properties and insect repellency, as well as having far-infrared radiation characteristics. 3. An amphibole having a particle size of 74 .mu.m or less, comprising 20 to 30% by weight, magnesia 40 to 60% by weight, and titanium 10 to 15% by weight, and zinc 10 to 15% by weight as an auxiliary material. Far-infrared radiation characterized in that the obtained composite ceramic is added and mixed in a mixing step of mixing and stirring the raw materials in the manufacturing process of the foamed polyurethane with a mixer, and then charged into a foaming machine and foamed. A method for producing a foamed polyurethane having properties and having antibacterial properties, deodorizing properties, fungicidal properties and insect repellency. 4. Magnesia 20 to 30 having a particle size of 74 μm or less.
% Of silica, 20 to 30% by weight of silica, and 20 to 30% by weight of titanium, and 20 to 30% by weight of zinc as an auxiliary material. In the mixing step of mixing and stirring the raw materials in a mixing machine, the mixture has a far-infrared radiation characteristic characterized by being added to a foaming machine and then foaming, and also has antibacterial properties, deodorizing properties, antifungal properties and A method for producing a foamed polyurethane having insect repellency. 5. A silica having a particle size of 74 μm or less, 10 to 15% by weight, cristobalite 20 to 30% by weight, serpentine 40 to 6%.
0% by weight as a main material, and titanium 10-1
A composite ceramic obtained by adding and mixing 5% by weight is
In the mixing step of mixing and stirring the raw materials in the manufacturing process of the foamed polyurethane with a mixing machine, the mixture is added and mixed, and then put into a foaming machine for foaming. A method for producing a foamed polyurethane having water resistance, mold resistance and insect repellency. 6. An amphibole having a particle size of 74 μm or less, 20 to 30% by weight, cristobalite 20 to 30% by weight, and serpentine 20 to 3%.
0% by weight as a main material, and titanium 20 to 3 as an auxiliary material.
The composite ceramic obtained by adding and mixing 0% by weight is
In the mixing step of mixing and stirring the raw materials in the manufacturing process of the foamed polyurethane with a mixing machine, the mixture is added and mixed, and then put into a foaming machine for foaming. A method for producing a foamed polyurethane having water resistance, mold resistance and insect repellency. 7. A mixture of 20 to 30% by weight of amphibole having a particle size of 74 μm or less, 20 to 30% by weight of magnesia, and 20 to 30% by weight of silica, and 20 to 30% by weight of zinc as an auxiliary material. Far-infrared radiation characterized in that the obtained composite ceramic is added and mixed in a mixing step of mixing and stirring the raw materials in the manufacturing process of the foamed polyurethane with a mixer, and then charged into a foaming machine and foamed. A method for producing a foamed polyurethane having properties and having antibacterial properties, deodorizing properties, fungicidal properties and insect repellency.