CN1673246A - Polyurethane foam plastics with deodorizing or antibiotic property - Google Patents
Polyurethane foam plastics with deodorizing or antibiotic property Download PDFInfo
- Publication number
- CN1673246A CN1673246A CN 200410031364 CN200410031364A CN1673246A CN 1673246 A CN1673246 A CN 1673246A CN 200410031364 CN200410031364 CN 200410031364 CN 200410031364 A CN200410031364 A CN 200410031364A CN 1673246 A CN1673246 A CN 1673246A
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- China
- Prior art keywords
- urethane foam
- carbon dust
- inorganic antiseptic
- polyvalent alcohol
- weight
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- 239000004033 plastic Substances 0.000 title claims abstract description 34
- 229920003023 plastic Polymers 0.000 title claims abstract description 34
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- 229920005830 Polyurethane Foam Polymers 0.000 title description 2
- 239000011496 polyurethane foam Substances 0.000 title description 2
- 230000001877 deodorizing effect Effects 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 105
- 230000002421 anti-septic effect Effects 0.000 claims abstract description 68
- 239000006260 foam Substances 0.000 claims description 140
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 139
- 229910052799 carbon Inorganic materials 0.000 claims description 103
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- 239000000203 mixture Substances 0.000 claims description 61
- 239000000376 reactant Substances 0.000 claims description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 43
- 239000012948 isocyanate Substances 0.000 claims description 34
- 150000002513 isocyanates Chemical class 0.000 claims description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 32
- 125000000524 functional group Chemical group 0.000 claims description 22
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 22
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- 239000006229 carbon black Substances 0.000 claims description 14
- 229910001923 silver oxide Inorganic materials 0.000 claims description 8
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 8
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- 238000004332 deodorization Methods 0.000 description 11
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- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
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- 241000219492 Quercus Species 0.000 description 3
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- 230000000996 additive effect Effects 0.000 description 3
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- 239000003429 antifungal agent Substances 0.000 description 3
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- 239000002023 wood Substances 0.000 description 2
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- MTZUIIAIAKMWLI-UHFFFAOYSA-N 1,2-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC=C1N=C=O MTZUIIAIAKMWLI-UHFFFAOYSA-N 0.000 description 1
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- VZXPHDGHQXLXJC-UHFFFAOYSA-N 1,6-diisocyanato-5,6-dimethylheptane Chemical compound O=C=NC(C)(C)C(C)CCCCN=C=O VZXPHDGHQXLXJC-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- KILRUNJAPHQGKW-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;ethene Chemical group C=C.OCC(CO)(CO)CO KILRUNJAPHQGKW-UHFFFAOYSA-N 0.000 description 1
- QZWKEPYTBWZJJA-UHFFFAOYSA-N 3,3'-Dimethoxybenzidine-4,4'-diisocyanate Chemical compound C1=C(N=C=O)C(OC)=CC(C=2C=C(OC)C(N=C=O)=CC=2)=C1 QZWKEPYTBWZJJA-UHFFFAOYSA-N 0.000 description 1
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- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
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- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
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Images
Abstract
The present invention provides one kind of foamed polyurethane plastic with excellent stink and moisture adsorption or excellent antibiotic property, and the foamed polyurethane plastic has visible compounded deodorant, antiseptic and other additives. The foamed polyurethane plastic features that it contains carbon powder and/or inorganic antiseptic and is preferably foamed polyurethane plastic with rebound elasticity.
Description
Technical field
The present invention relates to have the urethane foam of deodorization or germ resistance.More particularly, the invention reside in provides a kind of adsorptivity or germ resistance to foul smell or moisture etc. good, can allow the user know the urethane foam of the additive of having allocated deodorizer or antiseptic-germicide etc. in urethane foam into vision simultaneously.
Background technology
Urethane foam perhaps as bed material and wall material, is widely used among the various fields as beddings such as sole or shoe-pad, mattress or pillow, home-use chair or the automobile cushioning material with cushion etc.
Under the occasion that urethane foam uses with the cushioning material of cushion etc. as beddings such as mattress or pillow, home-use chair and automobile, because the user perspires, and under summer such hot and humid environment because of airborne moisture, be easy to generate acarid or fungi etc.The urethane foam that uses in above-mentioned and so on purposes is because the chance that directly contacts with the user is many, so being created on the health of acarid or fungi etc. is bad.Sometimes owing to a large amount of breedings of acarid or fungi etc., often become the reason of anaphylactic diseases such as contact dermatitis or asthma.
So breed in urethane foam in order to suppress acarid or fungi etc., people attempt adding therein antiseptic-germicide.
A kind of manufacture method of polyurathamc is for example disclosed in the patent documentation 1 (speciallyying permit No. 3362140 communique), it contains will be that anti-mycotic agent and carbaminate or phthalic imidine series antibacterial agent are dissolved in the ethanol as imidazoles such as amino benzoglyoxaline of the 2-methoxycarbonyl of antibacterial antifungal agent or 2-methyl carbonylamino benzo imidazoles, after forming solution, be dried the organic system antibacterial antifungal agent of making powder again.
Disclose a kind of germ resistance urethane foam in patent documentation 2 (speciallyying permit No. 2672973 communique), it contains N-(a fluorine dichloro-methyl sulfo-) phthalic imidine and 2-benzoglyoxaline carboxylamine lower alkyl esters and/or 2-(4-thiazolyl) benzoglyoxaline as antiseptic-germicide.
Yet, but have following problem in the above-mentioned germ resistance urethane foam.
Even added aforesaid antiseptic-germicide in urethane foam, the anti-microbial effect that is produced separately by antiseptic-germicide is also often low, especially in moisture in summer big period, usually is difficult to suppress the breeding of fungi etc., thereby usually produces disagreeable foul smell.
Even added above-mentioned antiseptic-germicide in urethane foam, the user also is difficult to allocate antiseptic-germicide into from identification visually, and the user is difficult to feel whether added antiseptic-germicide etc. really in urethane foam.
In addition, above-mentioned the sort of organic system antiseptic-germicide may not be high to people or environmentAL safety, also can become the morbid substance that causes anaphylactic disease sometimes.
Summary of the invention
The present invention proposes in order to solve the note problem just, and the 1 described invention of invention scheme relates to a kind of urethane foam, and it contains carbon dust and/or inorganic antiseptic in urethane foam.
The 2 described inventions of invention scheme are on the basis of invention scheme 1 described urethane foam, and wherein said carbon dust is porousness carbon dust and/or carbon black.
The 3 described inventions of invention scheme are on the basis of invention scheme 2 described urethane foams, wherein said inorganic antiseptic by carrier band in the porousness carbon dust.
The 4 described inventions of invention scheme are on the basis of each described urethane foam in invention scheme 1～3, and wherein said inorganic antiseptic is silver and/or titanium dioxide.
The 5 described inventions of invention scheme are on the basis of each described urethane foam in invention scheme 1～4, and wherein said urethane foam is the low resilience urethane foam plastics.
The 6 described inventions of invention scheme are on the basis of invention scheme 5 described urethane foams, and wherein said low resilience urethane foam plastics are the low resilience urethane foam plastics that formed by isocyanate prepolymer composition and polyhydroxy reactant; Described polyvalent alcohol is made up of the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 30～60 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 200～270 milligrams of KOH/ grams.
The 7 described inventions of invention scheme are on the basis of invention scheme 5 described urethane foams, and wherein said low resilience urethane foam plastics are the low resilience urethane foam plastics that formed by isocyanate prepolymer composition and polyhydroxy reactant; Described polyvalent alcohol is made up of the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210 milligrams of KOH/ grams.
The urethane foam that the present invention relates to, performance, far-infrared radiated property and the anti-microbial property of absorption foul smell and moisture are all good, can also inform that actual user has allocated additive into simultaneously.
And use as urethane foam under the occasion of low resilience urethane foam plastics, dispersed good to user's body pressure do not have the local compression sense, and can effectively prevent the obstruction of blood flow or effectively prevent bedsore.
Description of drawings
Fig. 1 is the sectional schematic diagram of the urethane foam that the present invention relates to.
Fig. 2 is the sectional schematic diagram of the urethane foam that the present invention relates to.
Fig. 3 is the sectional schematic diagram of the urethane foam that the present invention relates to.
Fig. 4 is the sectional schematic diagram of the urethane foam that the present invention relates to.
Wherein, description of reference numerals is as follows:
1 urethane foam that the present invention relates to
2 urethane foams
3 carbon dusts
4 inorganic antiseptics
Embodiment
Below describe the urethane foam that the present invention relates in detail.The urethane foam that the present invention relates to is characterised in that and contains carbon dust and/or inorganic antiseptic in urethane foam.
By containing carbon dust, carbon dust can adsorb foul smell in the urethane foam or moisture etc., and also has good far-infrared radiated property.
By containing inorganic antiseptic,, can obtain antibacterial effect by means of the anti-microbial effect of inorganic antiseptic.
By containing carbon dust and inorganic antiseptic simultaneously, because the moisture in the carbon dust absorption urethane foam so compare with the situation that contains inorganic antiseptic separately, can obtain better antibacterial effect.By containing carbon dust and inorganic antiseptic simultaneously, black carbon powder is recognized the metal color of inorganic antiseptic as a setting easily in addition, and the user can be identified in easily and allocate inorganic antiseptic in the urethane foam into.
In the urethane foam that the present invention relates to, contain the urethane foam of carbon dust and/or inorganic antiseptic, can use common flexible urethane foam with dispersion state.
Say that more specifically the urethane foam that the present invention uses is made up of polyhydroxy reactant, isocyanate prepolymer composition, whipping agent and catalyzer at least.
Polyhydroxy reactant so long as be used to is made common flexible urethane foam, just can use any kind of polyhydroxy reactant.Specifically, for example can enumerate ethylene glycol, propylene glycol, Diethylene Glycol, dipropylene glycol, glycerine, TriMethylolPropane(TMP), 1,2, the 6-hexanetriol, trolamine, the tetramethylolmethane ethylene diamine, tolylene diamine, the ditan diamines, the tetra methylol hexanaphthene, methyl glucoside, 2,2,6,6-four (hydroxymethyl) hexalin, diethylenetriamine etc. are passed through propylene oxide, oxyethane, the polyether glycol that its chain such as the epoxide of butylene oxide ring etc. has been increased, perhaps polyureas dispersed polyol (polyureadispersion polyol), the amine modified polyalcohol, the polytetramethylene glycol ether, the polyester polyol that multivalence alcohol and diprotic acid polycondensation obtain etc.Among the present invention, both can use a kind of in the above-mentioned polyhydroxy reactant, also can be use mixing two or more.
Isocyanate prepolymer composition just can use any kind of isocyanate prepolymer composition so long as make that urethane foam uses.Specifically, for example can enumerate aliphatic polymeric isocyanates such as hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexyl methane diisocyanate, cyclohexyl diisocyanate, lysinediisocyanate, methylcyclohexane diisocyanate; Aromatic poly-isocyanate or its modifiers such as tolylene diisocyanate, diphenylmethanediisocyanate, phenylene diisocyanate, dimethyl diphenyl vulcabond, dianisidine diisocyanate, Xylene Diisocyanate, tetramethylxylene diisocyanate, naphthalene diisocyanate, dimethyl triphenyl methane tetraisocyanate, triphenylmethane triisocyanate, three (isocyanate phenyl) thiophosphite, poly-diphenylmethanediisocyanate.Among the present invention, both can use a kind of in the above-mentioned isocyanate prepolymer composition, also can be use mixing two or more.
The amount of allocating into of isocyanate prepolymer composition can adopt the amount of using in the common urethane foam manufacturing of allocating into, with respect to the polyhydroxy reactant of 100 weight parts, its ratio can be adjusted to 60～130 usually specifically, preferably adjusts to 80～120.Its reason is to be lower than 60 or surpass under 130 the situation when ratio, all can not obtain good urethane foam.
Particularly in the present invention, preferably use the low resilience urethane foam plastics as urethane foam.Described low resilience urethane foam plastics are meant to be adjusted to the rebound resilience modulus below 30%, preferred 0～20%, more preferably 0～15% urethane foam.When the rebound resilience modulus surpasses under 30% the occasion, can not obtain having the urethane foam of good low-resilience.
In addition, should use the pressurization of the point under 20 ℃ of temperature condition is adjusted to below 35 seconds time of recovery, preferably adjust to 5～30 seconds, more preferably adjust to the low resilience urethane foam plastics between 7～25 seconds.Its reason is, the pressurization of point under 20 ℃ of temperature condition is adjusted under the situation below 35 seconds, because low-resilience is good, for example under the occasion of using as cushioning material time of recovery, good use feeling can be obtained, good deodorization and water absorbability can also be obtained simultaneously.In addition, so-called " some pressurization time of recovery " is meant, under certain certain temperature condition, make the test film of 50 * 380 * 380 (mm) carry out maximum compression with most advanced and sophisticated sharp keen proof stick (10 centimetres of length, 25 millimeters of diameters) after, from removing load to reverting to the required time of original thickness.
For molded foam plastics, the some pressurization preferably is being under 20 ℃ the temperature condition below 20 seconds time of recovery, and for the sheet material porous plastics, the some pressurization preferably is in below 10 seconds under 20 ℃ of temperature condition time of recovery.In addition, though urethane foam molded foam plastics that uses among the present invention or sheet material porous plastics can use, more preferably use molded foam plastics.
Above-mentioned low resilience urethane foam plastics can use the low resilience urethane foam plastics made from common manufacture method, the preferred especially low resilience urethane foam plastics of being made as polyhydroxy reactant by the mixture that average functional group number is 2～4, hydroxyl value is 30～60 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is the polyvalent alcohol of 200～270 milligrams of KOH/ grams that use among the present invention.
There is no particular restriction about the amount of allocating into of the former polyvalent alcohol and latter's polyvalent alcohol, can be that 34～75 weight %, latter's polyvalent alcohol are that the amount of allocating into of 25～66 weight % is allocated into the former polyvalent alcohol.Its reason is, under the occasion of the former the polyvalent alcohol amount of allocating into less than 34 weight % (under the occasion of the amount of allocating into of latter's polyvalent alcohol greater than 66 weight %), it is really up to the mark that porous plastics becomes, be difficult to obtain good low-resilience, and the former the polyvalent alcohol amount of allocating into surpasses under the occasion of 75 weight % (under the occasion of the amount of allocating into of latter's polyvalent alcohol less than 25 weight %), it is soft that porous plastics became, and also is difficult to obtain good low-resilience.
As average functional group number be 2～4, hydroxyl value is the polyvalent alcohol of 30～60 milligrams of KOH/ grams, can enumerate Mitsubishi and change into BORANORU (the ボ ラ ノ one Le) V3022J (trade(brand)name) that (ダ ウ) Co., Ltd. makes.And as average functional group number be 2～4, hydroxyl value is the polyvalent alcohol of 200～270 milligrams of KOH/ grams, can enumerate the MN700 (trade(brand)name) that the military field of Mitsui chemistry commercial firm makes.
In addition, the viscosity of polyhydroxy reactant under 25 ℃ of temperature condition can be adjusted to 400～600cp among the present invention, preferably adjust to 450～550cp.The viscosity that the viscosity of polyhydroxy reactant is lower than 400cp and polyhydroxy reactant surpasses under the occasion of 600cp, often can not form to have good elastic urethane foam.
And also can use the low resilience urethane foam plastics of making as polyhydroxy reactant by the mixture that average functional group number is 2～4, hydroxyl value is 80～120 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is the polyvalent alcohol of 150～210 milligrams of KOH/ grams among the present invention.
There is no particular restriction about the amount of allocating into of the former polyvalent alcohol and latter's polyvalent alcohol, can be that 34～75 weight %, latter's polyvalent alcohol are that the amount of allocating into of 25～66 weight % is allocated into the former polyvalent alcohol.Its reason is, the former polyvalent alcohol amount of allocating into is less than the occasion (under the occasion of the amount of allocating into of latter's polyvalent alcohol greater than 66 weight %) of 34 weight %, and the former polyvalent alcohol amount of allocating into surpasses under the occasion of 75 weight % (under the occasion of the amount of allocating into of latter's polyvalent alcohol less than 25 weight %), all is difficult to the good low-resilience of acquisition.
As average functional group number be 2～4, hydroxyl value is the polyvalent alcohol of 80～120 milligrams of KOH/ grams, can enumerate AKUTOKORU (the ア Network ト コ one Le) LR-00 (trade(brand)name) that the military field of Mitsui chemistry commercial firm makes.
And as average functional group number be 2～4, hydroxyl value is the polyvalent alcohol of 150～210 milligrams of KOH/ grams, can enumerate AKUTOKORU (the ア Network ト コ one Le) LR-03 (trade(brand)name) that the military field of Mitsui chemistry commercial firm makes.
In addition, the mixture that polyvalent alcohol that can use also among the present invention that average functional group number is 2～4, hydroxyl value is the polyvalent alcohol of 20～60 milligrams of KOH/ grams, average functional group number is 1.5～4.5, hydroxyl value is 200～300 milligrams of KOH/ grams and average functional group number are 2～4, hydroxyl value is the polyvalent alcohol of 80～150 milligrams of KOH/ grams is made the low resilience urethane foam plastics as polyhydroxy reactant.
There is no particular restriction about average functional group number is 2～4, hydroxyl value is 20～60 milligrams of KOH/ gram polyvalent alcohols content, but account for 40～80 weight % in the polyhydroxy reactant total amount, preferably accounts for 50～70 weight %.
There is no particular restriction about average functional group number is 1.5～4.5, hydroxyl value is 200～300 milligrams of KOH/ gram polyvalent alcohols content, but account for 15～40 weight % in the polyhydroxy reactant total amount, preferably accounts for 20～35 weight %.
There is no particular restriction about average functional group number is 2～4, hydroxyl value is 80～150 milligrams of KOH/ gram polyvalent alcohols content, but account for 1～15 weight % in the polyhydroxy reactant total amount, preferably accounts for 5～13 weight %.
As the isocyanate prepolymer composition that can when making the low resilience urethane foam plastics, use, preferably use tolylene diisocyanate (TDI-80, TDI-65), thick diphenylmethanediisocyanate (Crude-MDI) etc.As commercially available product, can enumerate TAKENETO ( ケ ネ one ト) 80 (trade(brand)names) that Mitsui day Cao's urethane (ウ レ Application) Co., Ltd. makes.
Whipping agent is planted whipping agent arbitrarily and can be used so long as make that urethane foam uses.Specifically, except that fluorochemicalss such as trichlorine methyl fuoride, methylene dichloride, Refrigerant 12, can also enumerate water, acid amides, nitro-paraffin or heavy V Soda, ammonium carbonate etc., preferably make the mixture of water or lower boiling organic compound such as water and methylene dichloride.The present invention both can be only a kind of with in the above-mentioned whipping agent, also can two or more mixing uses.
The amount of allocating into that the amount of allocating into of whipping agent adopts in the time of can adopting common urethane foam to make specifically with respect to 100 weight part polyhydroxy reactants, can be adjusted to 1.0～6.0 weight parts, preferred 1.8～5.0 weight parts.Its reason is that the amount of allocating into of whipping agent is lower than 1.0 weight parts and surpasses under the occasion of 6.0 weight parts, all can not foam well, and is either way bad.
Catalyzer is planted catalyzer arbitrarily and can be used so long as make that urethane foam uses.Specifically, except that dibutyl tin laurate, dibutyltin diacetate, oleic acid tin (the tertiary amine catalysts such as tin class catalyzer, tripropyl amine, triethylenediamine, dimethylethanolamine, triethylamine, tetramethyl-hexamethylene-diamine, N-methylmorpholine, N-ethylmorpholine such as ス Na ス オ レ エ-オ), can also enumerate known urethane catalyst, for example organo-metallic, organic acid etc.The present invention both can be only a kind of with in the above-mentioned catalyzer, also can two or more mixing uses.
The amount of allocating into that the amount of allocating into of catalyzer adopts in the time of can using common urethane foam to make specifically, can be adjusted to 0.01～5.0 weight part with respect to 100 weight part polyhydroxy reactants, preferred 0.5～3.0 weight part.Its reason is, is lower than the situation of 0.01 weight part and surpasses under the situation of 5.0 weight parts in the amount of allocating into of catalyzer, all can not obtain good urethane foam.
Among the present invention, except that the composition of above-mentioned explanation, can also suitably allocate various compositions such as multivalence alcohol, chain extension agent, softening agent, fire retardant, surfactant, organism powder, metal hydroxides, inorganic material powders, pigment, dyestuff, tinting material, inorganic extender, organic solvent, antioxidant, UV light absorber, hydrolysis-resisting agent arbitrarily into.
There is no particular restriction to the frothing percentage of urethane foam in addition, but preferably between 50～90%.
In urethane foam, contain carbon dust among the present invention.
As carbon dust contained in urethane foam, all carbon dusts that particle diameter is in more than 0.01 micron can use, and also can use the carbon dust of particle diameter more than 500 microns.
In the present invention, so long as the particle diameter more than 0.01 micron, then there is no particular restriction to the particle diameter of carbon dust, but under the occasion of using the carbon dust of particle diameter below 1 micron, preferred 0.01～1 micron, more preferably 0.01～0.8 micron, preferred especially 0.05～0.5 micron.Use the main purpose of particle diameter carbon dust below 1 micron to be, make all homogeneous substantially of urethane foam be coloured to black.Particle diameter is difficult to obtain homogeneous dispersive coloring effect substantially less than being difficult to preparation under 0.01 micron the occasion and surpass under 1 micron the occasion.
Allocate under the occasion of 1～500 micron carbon dust, preferably allocate 10～400 microns into, more preferably 100～300 microns.The main purpose of allocating 1～500 micron carbon dust into is to obtain deodorization functions and the damping effect that carbon dust has effectively.Under the occasion of particle diameter below 1 micron, deodorization functions or damping effect are low, and often can not disperse to remain in the porous plastics when surpassing 500 microns, so either way bad.
And under the occasion of using particle diameter carbon dust more than 500 microns, should use 500～2000 microns, and preferred 600～1500 microns, more preferably 750～1000 microns.Use that the main purpose of particle diameter carbon dust is except moisture absorption and deodorization more than 500 microns, can also make the user visually obtain to have allocated into the visual effect of carbon dust.Particle diameter tends to come off from porous plastics under 2000 microns the situation and surpass, so both of these case is all bad less than not obtaining abundant visual effect under 500 microns the situation.
As carbon dust, log 750～1200 ℃ of down burnings, is made it the white carbon that obtains 350～520 ℃ of following carbonizations, and with log 400～750 ℃ of burnings down, any carbon dust that makes it the black carbon that obtains 250～450 ℃ of following carbonizations can use.
For example, can enumerate with black ridge oak (Quercus phillyraeoides) as white carbon is log, is equipped with long carbon etc. at 1200 ℃ of left and right sides incendiary.Can enumerate the charcoal of making as log with Quercus acutissima (Quercus acutissima), oak genus (Quercus serrta Thunb) etc. as black carbon.In addition, also can suitably use bamboo charcoal or carbon black or the gac that utilizes the bamboo class that belongs to Qiao Benke (Gramineae).Especially preferably use porousness carbon dusts such as charcoal or bamboo carbon among the present invention, preferably use to be equipped with long carbon.
Also can use charcoal and/or bamboo carbon and sooty mixture among the present invention.Its reason is, by mixed carbon black, and charcoal and bamboo carbon dispersed good.By allocating carbon black into, urethane foam all can be colored as black in addition, make the visual effect of identification inorganic antiseptic good.Allocate under the sooty occasion, there is no particular restriction to its particle diameter, can be decided to be 0.01～1 micron.
Allocate into than there is no particular restriction with sooty about charcoal and bamboo carbon, calculate charcoal and/or bamboo carbon: carbon black=1: 0.5～5, preferred 1: 1～3, more preferably 1: 1.5～2.5 according to weight ratio.The sooty amount of allocating into is in case less than 0.5 times of weight of charcoal and/or the bamboo carbon amount of allocating into, just can not obtain the effect that obtains by allocating carbon black into, and the sooty amount of allocating into is in case surpass 5 times of weight of charcoal and/or the bamboo carbon amount of allocating into, owing to making water absorbability and deodorization, the relative reduction of the amount of allocating into of charcoal and/or bamboo carbon reduces, so either way bad.
The amount of allocating into of carbon dust can account for 0.01～30 weight % of whole compositions.This is because under the situation of the amount of allocating into less than 0.01 weight % of carbon dust, can not obtain just to tend to make dispersed the deterioration by allocating the effect that carbon dust brings into and in a single day allocate into above 30 weight %, can not foam well, so either way bad.Under the carbon dust particle diameter is in 0.01～1 micron occasion, preferably be set at 0.1～20 weight %, more preferably 0.5～15 weight % in addition.And under the carbon dust particle diameter is in occasion more than 1 micron, preferably be set at 0.1～10 weight %, more preferably 0.5～5 weight %.
For the urethane foam that the present invention relates to, can contain inorganic antiseptic in the polyurethane foam.
As the inorganic antiseptic that can use in the present invention, the agent of preferable alloy ion antibacterial for example can be enumerated silver, copper, zinc, titanium dioxide etc.
Especially preferably allocate silver and/or titanium dioxide among the present invention into.Its reason is that silver or titanium dioxide have good anti-microbial activity.Under the occasion that carbon dust is allocated into, can obtain better antibacterial effect.
In addition, preferably silver and titanium dioxide are allocated into as inorganic antiseptic together among the present invention.Its reason is by allocating silver and titanium dioxide together into, compares with allocating into separately respectively, can obtain especially good germ resistance.
There is no particular restriction for the amount of allocating into of inorganic antiseptic, accounts for 0.01～30 weight % with respect to all allocating composition into, preferably accounts for 0.1～10 weight %.Be lower than under the situation of 0.01 weight %, can not give the urethane foam anti-microbial activity, and surpass the foaming that often hinders under the situation of 30 weight % when making urethane foam, and usually can come off from urethane foam.
In addition, under the situation that silver and titanium dioxide are allocated into jointly as inorganic antiseptic together, there is no particular restriction to its proportioning, but preferably the amount of allocating into always of above-mentioned silver and titanium dioxide be in above-mentioned allocate in the weight range in, make silver by weight calculating: titanium dioxide=1: 0.1～10 more preferably equal 1: 0.3～5.
There is no particular restriction for the particle diameter of inorganic antiseptic, but preferably be in 0.1～300 micrometer range, more preferably is in 0.5～100 micrometer range.In addition, the particle diameter of inorganic antiseptic is preferably little than carbon dust particle diameter described later.Its reason is can also produce the good visual effect of telling the user to allocate inorganic antiseptic into simultaneously with the inorganic antiseptic carrier band on carbon dust.
In addition, titanium dioxide exists Detitanium-ore-type, rutile-type and brookite type titanium dioxide.The present invention can use the titanium dioxide of any type, but the preferred use because anatase titanium dioxide has good anti-microbial activity.
The present invention both can only allocate any in carbon dust or the inorganic antiseptic into, also can allocate carbon dust and titanium dioxide simultaneously into.
The present invention can also be with the inorganic antiseptic carrier band in the porousness carbon dust and be dispersed among the urethane foam.By make inorganic antiseptic be dispersed in the surface of porousness carbon dust or the carbon dust small pore surface and by carrier band, and because inorganic antiseptic is dispersed good, simultaneously because the specific surface area of porousness carbon dust is big, so can allocate a large amount of inorganic antiseptics into, thereby can improve germ resistance, deodorization and water absorbability.
Under the occasion of inorganic antiseptic carrier band in the porousness carbon dust, the porousness carbon dust uses the big carbon dust of particle diameter ratio inorganic antiseptic particle diameter.
About there is no particular restriction with the method for inorganic antiseptic carrier band in the porousness carbon dust, for example can enumerate by carbon dust and inorganic antiseptic being blended in the water and the method for carrier band, perhaps by coming the method for carrier band etc. at 500～1000 ℃ of temperature lower calcinations as wood powder of carbon dust raw material etc. with after inorganic antiseptic mixes.When mixing wood powder and inorganic antiseptic, can also add conformal agent such as clay or binding agent as required.
Further, in the present invention,, also can adopt precipitation liberation method, vapor-phase chromatography, non-electrolytic plating method, vapour deposition method etc. as with the method for inorganic antiseptic carrier band at surperficial or its pore internal surface of porousness carbon dust.
Above-mentioned inorganic antiseptic and carbon dust can mix above-mentioned allocating in the weight range, but especially preferably allocate in the weight range inorganic antiseptic and carbon dust into blended simultaneously above-mentioned among the present invention, make the weight ratio of inorganic antiseptic and carbon dust be preferably 1: 0.1～10, more preferably 1: 0.5～5.Its reason is to tell the user to allocate the visual effect of inorganic antiseptic into if the amount of allocating into of carbon dust less than 0.1 times of weight of the inorganic antiseptic amount of allocating into, then lacks.Otherwise in a single day greater than 10 times of weight of the inorganic antiseptic amount of allocating into, then the amount of allocating into of carbon dust is too much for inorganic antiseptic, also lacks visual effect in this case for the amount of allocating into of carbon dust.
Fig. 1～Fig. 4 is the view profile that schematically illustrates the urethane foam that the present invention relates to.In the urethane foam that the present invention relates to 1 that this external Fig. 1 and Fig. 2 represent, in urethane foam 2, contain carbon dust 3.In the urethane foam of representing as Fig. 3 and Fig. 4 that the present invention relates to 1, in urethane foam 2, contain carbon dust 3 and inorganic antiseptic 4.
The urethane foam 1 that the present invention relates to, shown in the sectional schematic diagram shown in Fig. 1 or 3, carbon dust 3 and/or inorganic antiseptic 4 are disperseed to remain in the urethane foam 2 substantially equably.And shown in the sectional schematic diagram shown in Fig. 2 or 4, being disperseed to remain on carbon dust 3 and/or inorganic antiseptic 4 in the urethane foam 2, concentrated maintenance is in its surface.
The urethane foam that the present invention relates to, in the foul smell and moisture that carbon dust is disliked in the absorption urethane foam, because the breeding of inorganic antiseptic inhibition fungi etc., so deodorization, water absorbability and germ resistance are good.
And, the foul smell or moisture in urethane foam, owing to also can adsorb disagreeable foul smell and moisture contained in the air by urethane foam, when for example using the urethane foam that the present invention relates to, can reduce distinctive stink in the automobile as the cushioning material of automobile chair.
Because carbon dust has the far infrared rays effect, so for example use under the occasion of urethane foam as bedding, can improve heat-insulating property.
The urethane foam that the present invention relates to, not only on the surface of urethane foam, and in urethane foam, all disperse to maintain carbon dust and inorganic antiseptic, so situation about keeping with being partial to a part is compared, the specific surface area of carbon dust or inorganic antiseptic increases, thereby can improve deodorization, water absorbability and germ resistance.
Though the urethane foam that the present invention relates to can use in various uses, but expect its good deodorization, water absorbability and germ resistance, the cushioning material that can be suitable for cushion, bed material, wall material, sole etc. as beddings such as mattress or pillow, chair uses.
Below, the manufacture method that the urethane foam that the present invention relates to that explanation is described in detail above is suitable for.
The manufacture method that the urethane foam that explanation the present invention relates to according to the particle diameter of institute's carbonaceous powder is suitable for.
At first under the carbon dust particle diameter is 0.01～1 micron occasion, when polyol blend composition and isocyanate prepolymer composition, mix carbon dust and/or inorganic antiseptic simultaneously, then heating, foaming and molding.By while polyol blend composition, isocyanate prepolymer composition, carbon dust and/or inorganic antiseptic, catalyzer can not be attracted on the carbon dust and carry out good foaming.In addition, be that preferred the mixing used carbon black under 0.01～1 micron the occasion of carbon dust using particle diameter.Its reason is to improve the dispersiveness of carbon dust.
As an example of this manufacture method, at first at polyhydroxy reactant and isocyanate prepolymer composition heating and melting together during at solid form.The temperature that the Heating temperature of this moment adopts during with common manufacturing urethane foam is identical, specifically is set at 50～80 ℃.In addition, under decompression state, dewater and deaeration in case of necessity.
Secondly, catalyzer, whipping agent or other additives are mixed in the polyhydroxy reactant.The temperature that the temperature of this moment adopts during with common manufacturing urethane foam is identical, specifically is set at 15～60 ℃.
At last, when the polyhydroxy reactant that will mix various additives mixes with isocyanate prepolymer composition, allocate carbon dust and inorganic antiseptic simultaneously into.Utilize the method for heating, foaming postforming, can make the urethane foam that the present invention relates to.Heating temperature is about 90～250 ℃.
Below explanation carbon dust particle diameter surpasses the manufacture method under 1 micron situation.This manufacture method is characterised in that, with after carbon dust and/or inorganic antiseptic and the polyhydroxy reactant blending dispersion, mixes with isocyanate prepolymer composition more in advance, and foamable is shaped then.
Its reason is, after in advance carbon dust and/or inorganic antiseptic being mixed in polyhydroxy reactant, by mix with isocyanate prepolymer composition and heat, foaming makes it to be shaped, can make carbon dust and inorganic antiseptic not segregation in urethane foam, and can disperse to remain in the urethane foam.
If will enumerate an example of its manufacture method, heating and melting together when polyhydroxy reactant and isocyanate prepolymer composition solid state at first then.Temperature when the Heating temperature of this moment is made with common urethane foam is identical, is specially 50～80 ℃.In addition, under decompression state, dewater in case of necessity, deaeration.
Catalyzer, whipping agent or other additives can be blended in the polyhydroxy reactant then.In addition, in the present invention, in advance carbon dust and inorganic antiseptic are also allocated among the polyhydroxy reactant, it is dispersed to homogeneous substantially.Temperature when the temperature of this moment is made with common urethane foam is identical, is specially 15～60 ℃.
The polyhydroxy reactant that will mix various additives at last mixes with isocyanate prepolymer composition, by heating, foaming postforming, can make the urethane foam that the present invention relates to.Heating temperature is about about 90～250 ℃.
This manufacture method is allocated carbon dust in advance into and is dispersed to the polyhydroxy reactant and the isocyanate prepolymer composition of homogeneous substantially by mixing, and make it to foam, so long as particle diameter is more than or equal to more than 1 micron, no matter be the carbon dust of which kind of particle diameter, also can both make the urethane foam that carbon dust is not kept by dispersion to part deflection ground.In addition, in case use the carbon dust of particle diameter more than 500 microns, will the sectional schematic diagram of image pattern 2 shown in, on one side carbon dust is dispersed among the urethane foam, and further concentrate from the teeth outwards and preferred.
And the manufacture method of the urethane foam that the present invention relates to, no matter be that continuous processing also makes interrupter method, can suitably adopt.
And the urethane foam that the present invention relates to, both can adopt the plate foaming, also can adopt the molding foaming.Especially go up and preferably under the occasion of polyhydroxy reactant of record adopt the manufacturing of plate foaming when using paragraph to be numbered " 0015 ", go up and preferably under the occasion of polyhydroxy reactant of record adopt the manufacturing of molding foaming when using paragraph to be numbered " 0016 "～" 0017 ".
In addition, adopt under the situation of molding foaming, can on the urethane foam surface of manufacturing, form gas permeable film.By on the urethane foam surface, forming gas permeable film, can regulate to such an extent that postpone time of recovery the point pressurization of urethane foam.
Embodiment
Below enumerate embodiment and be described in more detail the present invention.But the present invention is not subjected to the restriction of the following example.
(specimen preparation 1)
The various samples that prepared embodiment 1～4 and reference examples 1 according to the composition shown in the table 1.The preparation method is as follows: at first the composition beyond the isocyanate prepolymer composition is blended in the polyhydroxy reactant, then this polyhydroxy reactant and isocyanate prepolymer composition is mixed and make it reaction.Heat under 60～75 ℃ of conditions with process furnace and to make it slaking in 10 minutes, made various samples.
In addition, use after as polyhydroxy reactant Mitsubishi being changed into MN700 (trade(brand)name) balanced mix that BORANORU (ボ ラ ノ-Le) V3022J (trade(brand)name) that Co., Ltd. makes and the military field of Mitsui chemistry commercial firm make.In addition, used tolylene diisocyanate (TDI-80) as isocyanate prepolymer composition.As catalyst component and charcoal, used oleic acid tin respectively and be equipped with long carbon.
(specimen preparation 2)
The sample that has prepared embodiment 5 according to the composition shown in the table 1.The preparation method is as follows: after at first being blended in the composition beyond carbon dust, inorganic antiseptic and the isocyanate prepolymer composition in the polyhydroxy reactant, this polyhydroxy reactant and isocyanate prepolymer composition and carbon dust and inorganic antiseptic being mixed simultaneously and make it react.Made after making it slaking in 10 minutes in heating under 60～75 ℃ of conditions with process furnace.Carbon black has used particle diameter less than 1 micron carbon black in addition.Other raw materials use the raw material identical with the sample of embodiment 1～4.
(test example 1: the mensuration of hardness and time of recovery)
According to the method for JIS-K6400 regulation, measured the hardness of each sample of the embodiment 1～5 of above-mentioned preparation and reference examples 1.That is to say, with the testing machine that 200mm Ф pressurization disk is installed, with the test film precharge of 50 * 380 * 380 (mm) to the pressurization thickness 75%, measure 25% o'clock the load value that is compressed to original thickness with the speed of per minute 100mm then.
In addition, for the embodiment 1～5 of above-mentioned preparation and each sample of reference examples 1, after applying a fixed load under 20 ℃ of temperature condition, remove this load, and mensuration returns to fully the time of recovery (some pressurization time of recovery) that does not add the load state from the pit that is formed by load.The results are shown among the table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Reference examples 1 | |
| Polyhydroxy reactant (weight part) | ????100 | ????100 | ????100 | ????100 | ????100 | ????100 |
| Isocyanate prepolymer composition (ratio) | ????100 | ????100 | ????100 | ????100 | ????100 | ????100 |
| Water (weight part) | ????2.0 | ????2.0 | ????2.0 | ????2.0 | ????2.0 | ????2.0 |
| Silicon surfactant (weight part) | ????1.0 | ????1.0 | ????1.0 | ????1.0 | ????1.0 | ????1.0 |
| Catalyzer (weight part) | ????0.4 | ????0.4 | ????0.4 | ????0.4 | ????0.4 | ????0.4 |
| Fire retardant (weight part) | ????12 | ????12 | ????12 | ????12 | ????12 | ????12 |
| Black pigment (weight part) | ????2.0 | ????2.0 | ????2.0 | ????1.8 | ????- | ????- |
| Carbon black (weight part) | ????- | ????- | ????- | ????- | ????1.5 | ????- |
| Charcoal (500 microns in footpath) (weight part) | ????- | ????0.6 | ????- | ????0.5 | ????- | ????- |
| Charcoal (200 microns in footpath) (weight part) | ????0.7 | ????- | ????0.3 | ????- | ????- | ????- |
| Charcoal (10 microns in footpath) (weight part) | ????- | ????- | ????- | ????- | ????- | ????- |
| Silver powder (weight part) | ????0.5 | ????- | ????0.5 | ????1.0 | ????- | ????- |
| Titanium dioxide (weight part) | ????- | ????0.5 | ????0.5 | ????- | ????1.0 | ????- |
| Hardness (N/314cm 2) | ????2.04 | ????1.98 | ????1.87 | ????2.21 | ????2.10 | ????2.02 |
| Point pressurizes time of recovery (second) | ????22 | ????19 | ????30 | ????13 | ????20 | ????21 |
As the result of table 1 as can be known, the urethane foam that the present invention relates to has and the identical substantially physical parameter of urethane foam of carbonaceous powder or inorganic antiseptic not.
And the sample of each embodiment, in urethane foam, disperse to maintain carbon dust and inorganic antiseptic.
(test example 2: the germ resistance test)
At first adopt the method same, according to forming the sample that has prepared embodiment 6,7 and reference examples 2 shown in the table 2 with embodiment 1～4.In addition, about embodiment 7 silver powder carrier band back on charcoal is used.
Then, each sample of above-mentioned preparation is cut into 45mm * 5mm * 2mm size, each sample after will shearing is respectively put into the culture dish of sterilization, and each coliform count that drips 0.5 milliliter is adjusted to about 10/milliliter bacterium liquid on the sample in culture dish.With film culture dish is built from the outside, prevented that thalline from sneaking into the culture dish from the outside, at room temperature take care of.
After 24 hours, take out bacterium liquid, move in the substratum and cultivate, measure the bacterium number that is verified body.
Table 2
| Embodiment 6 | Embodiment 7 | Reference examples 2 | |
| Polyhydroxy reactant (weight part) | ????100 | ????100 | ????100 |
| Isocyanate prepolymer composition (ratio) | ????100 | ????100 | ????100 |
| Water (weight part) | ????2.0 | ????2.0 | ????2.0 |
| Silicon surfactant (weight part) | ????1.0 | ????1.0 | ????1.0 |
| Catalyzer (weight part) | ????0.4 | ????0.4 | ????0.4 |
| Fire retardant (weight part) | ????12 | ????12 | ????12 |
| Charcoal (200 microns in footpath) (weight part) | ????1.0 | ????1.0 | ????- |
| Silver powder (weight part) | ????0.5 | ????0.5 | ????- |
Cultivation results shows, the bacterium number before the specimen test of reference examples begins and almost constant or some increases are arranged through the bacterium number after 24 hours, and in contrast to this, the sample of embodiment does not almost detect intestinal bacteria.Therefore, the urethane foam that the present invention relates to has good anti-microbial activity.
(test example 3: the visual effect test)
Be indebted to the sample of the embodiment 6 of 10 above-mentioned preparations of judge's visual inspection, and except that not containing charcoal, form identical sample, and selected sensuously silver powder and allocated many samples into embodiment 6.
Its result has the sample silver powder of 9 sensation embodiment 6 to allocate into many in 10 judges.
Therefore, the urethane foam that contains silver powder and carbon dust has and informs that the user allocates the good visual effect of additive into.
(specimen preparation 3)
According to forming each sample that has prepared embodiment 8～11 and reference examples 3 shown in the table 3.The preparation method is as follows: after at first the composition beyond the isocyanate prepolymer composition being mixed in polyhydroxy reactant, this polyhydroxy reactant and isocyanate prepolymer composition mixing are made it reaction.Heat under 60～75 ℃ of conditions with process furnace and to make it slaking in 10 minutes, made each sample.
In addition, AKUTOKORU (the ア Network ト コ-Le) LR-00 (trade(brand)name) of the military field of Mitsui chemistry commercial firm manufacturing and AKUTOKORU (the ア Network ト コ-Le) LR-03 (trade(brand)name) that the military field of Mitsui chemistry commercial firm makes have been used as the polyhydroxy reactant balanced mix.And used tolylene diisocyanate (TDI-80) as isocyanate prepolymer composition.Used oleic acid tin respectively and be equipped with long carbon as catalyzer and charcoal.
(specimen preparation 4)
According to forming the sample that has prepared embodiment 12 shown in the table 3.The preparation method is as follows: after at first the composition beyond carbon dust, inorganic antiseptic and the isocyanate prepolymer composition being mixed in polyhydroxy reactant in advance, polyol blend composition and isocyanate prepolymer composition and carbon dust and inorganic antiseptic make it reaction simultaneously.Made after making it slaking in 10 minutes in heating under 60～75 ℃ of conditions with process furnace.In addition, carbon black has used particle diameter less than 1 micron carbon black.Other raw materials have used the raw material identical with the sample of embodiment 8～11.
(test example 4: the mensuration of hardness and time of recovery)
According to the method for JIS-K6400 regulation, measured the hardness of embodiment 8～12 and reference examples 3 each sample of above-mentioned preparation.That is to say, the test film of 50 * 380 * 380 (mm) is pre-compressed to 75% of thickness before the pressurization, measure 25% o'clock the load value that is compressed to original thickness with the speed of per minute 100mm then with the testing machine that 200mm Ф pressurization disk is installed.
In addition, for the embodiment 8～12 of above-mentioned preparation and each sample of reference examples 3, after applying a fixed load under 20 ℃ of temperature condition, remove this load, measure from the pit that forms by load and extremely return to the time of recovery (some pressurization time of recovery) that does not add the load state fully.The results are shown among the table 3.
Table 3
| Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | Reference examples 3 | |
| Polyhydroxy reactant (weight part) | ????100 | ????100 | ????100 | ????100 | ????100 | ????100 |
| Isocyanate prepolymer composition (index) | ????100 | ????100 | ????100 | ????100 | ????100 | ????100 |
| Water (weight part) | ????2.0 | ????2.0 | ????2.0 | ????2.0 | ????2.0 | ????2.0 |
| Silicon surfactant (weight part) | ????1.0 | ????1.0 | ????1.0 | ????1.0 | ????1.0 | ????1.0 |
| Catalyzer (weight part) | ????0.4 | ????0.4 | ????0.4 | ????0.4 | ????0.4 | ????0.4 |
| Fire retardant (weight part) | ????12 | ????12 | ????12 | ????12 | ????12 | ????12 |
| Black pigment (weight part) | ????2.0 | ????2.0 | ????2.0 | ????1.8 | ????- | ????- |
| Carbon black (weight part) | ????- | ????- | ????- | ????- | ????1.5 | ????- |
| Charcoal (500 microns in footpath) (weight part) | ????- | ????0.6 | ????- | ????0.5 | ????- | ????- |
| Charcoal (200 microns in footpath) (weight part) | ????0.7 | ????- | ????0.3 | ????- | ????- | ????- |
| Charcoal (10 microns in footpath) (weight part) | ????- | ????- | ????- | ????- | ????- | ????- |
| Silver powder (weight part) | ????0.5 | ????- | ????0.5 | ????1.0 | ????- | ????- |
| Titanium dioxide (weight part) | ????- | ????0.5 | ????0.5 | ????- | ????1.0 | ????- |
| Hardness (N/314cm 2) | ????2.06 | ????1.95 | ????1.96 | ????2.01 | ????2.20 | ????2.30 |
| Point pressurizes time of recovery (second) | ????30 | ????21 | ????28 | ????15 | ????19 | ????25 |
As the result of table 3 as can be known, the urethane foam that the present invention relates to has and the identical substantially physical parameter of urethane foam of carbonaceous powder and inorganic antiseptic not.
And the sample of each embodiment, in urethane foam, disperse to maintain carbon dust and inorganic antiseptic.
(test example 5: the germ resistance test)
At first adopt and embodiment 8～12 same quadrat methods, according to forming the sample that has prepared embodiment 13,14 and reference examples 4 shown in the table 4.In addition, about embodiment 14 silver powder carrier band back on charcoal is used.
Then, each sample of above-mentioned preparation is cut into the size of 45mm * 5mm * 2mm, each sample after will shearing is respectively put into the culture dish of sterilization, and 0.5 milliliter of coliform count of each dropping is adjusted to the bacterium liquid that is about 10/milliliter on the sample in culture dish.With film culture dish is built from the outside, prevented that thalline from sneaking into the culture dish from the outside, at room temperature take care of.
After 24 hours, take out bacterium liquid, move in the substratum and cultivate, measure the bacterium number that is verified body.
Table 4
| Embodiment 13 | Embodiment 14 | Reference examples 4 | |
| Polyhydroxy reactant (weight part) | ????100 | ????100 | ????100 |
| Isocyanate prepolymer composition (ratio) | ????100 | ????100 | ????100 |
| Water (weight part) | ????2.0 | ????2.0 | ????2.0 |
| Silicon surfactant (weight part) | ????1.0 | ????1.0 | ????1.0 |
| Catalyzer (weight part) | ????0.4 | ????0.4 | ????0.4 |
| Fire retardant (weight part) | ????12 | ????12 | ????12 |
| Charcoal (200 microns in footpath) (weight part) | ????1.0 | ????1.0 | ????- |
| Silver powder (weight part) | ????0.5 | ????0.5 | ????- |
Cultivation results shows, the bacterium number before the specimen test of reference examples begins and almost constant or some increases are arranged through the bacterium number after 24 hours, and in contrast to this, the sample of embodiment does not almost detect intestinal bacteria.Therefore, the urethane foam that the present invention relates to has good anti-microbial activity.
Claims (7)
1. a urethane foam is characterized in that, contains carbon dust and/or inorganic antiseptic in urethane foam.
2. urethane foam as claimed in claim 1 is characterized in that, described carbon dust is porousness carbon dust and/or carbon black.
3. urethane foam as claimed in claim 2 is characterized in that, described inorganic antiseptic by carrier band in the porousness carbon dust.
4. as each described urethane foam in the claim 1～3, it is characterized in that described inorganic antiseptic is silver and/or titanium dioxide.
5. as each described urethane foam in the claim 1～4, it is characterized in that described urethane foam is the low resilience urethane foam plastics.
6. urethane foam as claimed in claim 5 is characterized in that, described low resilience urethane foam plastics are the low resilience urethane foam plastics that formed by isocyanate prepolymer composition and polyhydroxy reactant;
Described polyvalent alcohol is made up of the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 30～60 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 200～270 milligrams of KOH/ grams.
7. urethane foam as claimed in claim 5 is characterized in that, described low resilience urethane foam plastics are the low resilience urethane foam plastics that formed by isocyanate prepolymer composition and polyhydroxy reactant;
Described polyvalent alcohol is made up of the polyvalent alcohol that average functional group number is 2～4, hydroxyl value is 80～120 milligrams of KOH/ grams polyvalent alcohol and average functional group number are 2～4, hydroxyl value is 150～210 milligrams of KOH/ grams.
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