CN1589952A - Visible formaldehyde gas eliminator and formaldehyde detecting bead and their preparation method - Google Patents
Visible formaldehyde gas eliminator and formaldehyde detecting bead and their preparation method Download PDFInfo
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- CN1589952A CN1589952A CN 03150570 CN03150570A CN1589952A CN 1589952 A CN1589952 A CN 1589952A CN 03150570 CN03150570 CN 03150570 CN 03150570 A CN03150570 A CN 03150570A CN 1589952 A CN1589952 A CN 1589952A
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Abstract
A visual formaldehyde gas eliminating agent is prepared through treating the porous carrier chosen from solid silica gel, molecular sieve, zeolite, alumina and calcium chloride by AHMT and at least one formaldehyde capture in alkaline condition. A visual formaldehyde detecting bead is prepared through treating said porous carrier by AHMT in alkaline condition.
Description
Affiliated technical field
The present invention relates to environmental protection treatment and detection range, particularly a kind of formaldehyde gas is eliminated and formaldehyde detects pearl and their preparation method.
Background technology
Formaldehyde is a kind of colourless easily molten irritative gas, can absorb through respiratory tract, and biological cell protein is had destruction, is the very strong protoplasm material of a kind of toxicity, and research institute classifies one of carcinogenic substance as by international cancer.Formaldehyde has negative effect to health.Peculiar smell and sense of discomfort when being 0.1 milligram/cubic metre, indoor content are just arranged; 0.5 can stimulate eyes to cause during milligram/cubic meter sheds tears; 0.6 cause throat discomfort or pain during milligram/cubic meter; Concentration is high again to cause nausea, vomit, cough, uncomfortable in chest, asthma even pulmonary emphysema; When reaching 230 milligrams/cubic metre in the air, can cause death at once.
Along with the raising of people life and residential level, make the formaldehyde pollution in the room become the big problem that people face to the new finishing or the new furniture in room.According to the testing result of China's authoritative department, be unkitted in the dwelling house repaiied and the finishing house soon newly building up, the major pollutants of indoor pollution are formaldehyde, its recall rate is 100%.The sanitary standard regulation of China's IAQ, the maximum permissible concentration of formaldehyde is 0.08 milligram every cubic metre.And testing result shows, in the dwelling house air of the not finishing that newly builds up, formaldehyde exceeds 40 times of standards, fits up that indoor concentration of formaldehyde is 30 times of standard value after 5 days, even also exceeded standard more than 3 times later in 6 months.
Come from car seat support cover, cushion and inside roof lining in the automobile, the formaldehyde of the employed fire retardant of bunting that particularly pastes above pollutes and also can not be ignored, it can make, and the driver dizziness occurs, feels sick, headache, sleepy, cause absent minded, and the traffic accident that causes.
Formaldehyde still is one of hazard residue material on the textile, it can combine with the cellulose fibre hydroxyl, in the production of textile and clothes, use formaldehyde as reactant, make clothes can reach effect such as wrinkle resistant, shrinkproof, fire-retardant, or for the durability that keeps stamp, dyeing and improve feel.After the textile that contains formaldehyde is made clothes, in people's wearing process, can discharge free formaldehyde gradually, respiratory mucosa and skin be produced intense stimulus, cause respiratory inflammation and dermatitis by human body respiration and skin contact.
Formaldehyde also may be present among the food.Because formaldehyde can change the color sensation of some food and antisepsis is arranged, as having added formaldehyde in aquatic products, water-soaked food, the rice and flour bean product etc. or sodium formaldehyde sulphoxylate claims sodium formaldehyde sulfoxylate again.
In sum, formaldehyde pollutes and is prevalent in the daily life.Detect whether there is the formaldehyde pollution, take measures to reduce and even eliminate formaldehyde and pollute, to protection people physical and mental health, improving the quality of living is significant, and can bring good society and economic benefit.
Formaldehyde is eliminated the existing in the literature many reports of related art scheme.A kind of scheme is reactive compound to be made formaldehyde eliminate solution or powder, with smear, spray, form such as interpolation uses, by with formaldehyde generation chemical reaction or form the membrane sealed layer and stop mechanism such as formaldehyde release to reach to reduce the purpose that formaldehyde pollutes.The water-soluble active methylenes compound that Chinese patent publication number 1032047 discloses, sulfanilic acid and the mould mixing formula of urea that publication number 1104657 discloses, the tea powder that publication number 1298911 discloses, the hydrazide kind compound that publication number 1404891 discloses, triethanolamine and Sodium Metabisulfite mixing formula that publication number 1413750 discloses, the Tea Polyphenols that publication number 1425725 discloses, the natural canella extract that publication number 1431258 discloses, and the urea and the ammonium chloride mixing formula of U.S. Patent number 5108621 disclosures, the poly imonium that the patent No. 5317071 discloses, the mixing formula of urea that the patent No. 60012741 discloses and cyclodextrin etc., urea that the patent No. 6043405 discloses and polyethylene imonium prescription etc. all belong to this type of.Also there are multiple solution or powder-type formaldehyde to eliminate product in the market, occur with titles such as formaldehyde catching agent, remover, scavengers.Yet the product that this class remover and formolite reaction form may be poisonous, easily causes secondary pollution, and may cause damage to handling article such as furniture surface.In addition, do not form change color after the use, the user can't learn has be eliminated actually for how much formaldehyde.
Another kind of scheme is the material that reactive compound and certain possess absorption or support function to be combined make the solid forming product, by catch, absorbing formaldehyde and reach the purpose that reduces the formaldehyde pollution with mechanism such as formaldehyde generation chemical reaction.The AU formaldehyde catching agent that concavo-convex rod of the clay by microcrystalline porous structure that Chinese patent publication number 1062541 discloses and aqueous solution of urea are mixed and made into, the formaldehyde absorption plant that the vessel by the formaldehyde absorbing particles of being with oxidant and wall perforate that publication number 2451216 discloses is formed, the microcapsule product of forming by macromolecular compound capsule shells and interior formaldehyde catching agent capsule-core thereof that publication number 2519722 discloses, the sandwich felt that has the NACF felt of bionical enzyme catalyst to become by load that publication number 2530802 discloses, and the modified zeolite of Application No. 20010012820 disclosures or molecular sieve etc., all belong to this type of.Yet this class remover does not form change color after using, and the user can't learn has be eliminated actually for how much formaldehyde.
U.S. Patent number 4517111 has disclosed a kind of alkaline holder after being handled by permanganate, and the formaldehyde in can absorbed air also with it oxidation reaction takes place and reaches the purpose of eliminating formaldehyde.Alkaline holder after permanganate is handled is mauve, change to some extent with color behind the formolite reaction of abundant amount (blackening, turn white or other variation), thereby the user can know that this kind holder has lost the activity that formaldehyde is eliminated in absorption, needs replacing by change color.Yet airborne other material also can cause change color with permanganate generation oxidation reaction, thereby change color do not represent necessarily to have formaldehyde to be eliminated, and more can't show how much formaldehyde and be eliminated.This in addition change color is not obvious, and regularity is not strong, makes troubles to the user during use.
4-amino-3-hydrazine-5-sulfydryl-1,2,4-triazole (be called for short AHMT) under alkali condition with formaldehyde condensation, generate the aubergine compound through oxidation then, its color and luster depth is directly proportional with content of formaldehyde, thereby can be used for detecting formaldehyde.The AHMT spectrophotometer method also is one of the standard method of the detection formaldehyde of China national regulation.The method need prepare several agents, carries out the multistep operation, only is applicable to the laboratory detection usually.U.S. Patent number 4511658 has disclosed a kind of simple and easy to do formaldehyde gas detector preparation method, it forms the bicarbonate sediment earlier on a solid support, and then, can produce aubergine with airborne formolite reaction and change with the AHMT processing formation formaldehyde detection layers that is dissolved in ketoboidies compound such as the acetone.Because the solubility of AHMT in the ketoboidies compound is very low, the formaldehyde gas detector for preparing with this method has only minute quantity AHMT, thereby detection sensitivity is lower.In addition, if make solid support with filter paper, background is often higher, is difficult to reach the requirement of accuracy of detection.And this Patent Office is limited to the detection of formaldehyde gas, do not mention the elimination of formaldehyde gas.
One object of the present invention is exactly the deficiency at prior art ubiquitous " formaldehyde is eliminated and be cannot see " or DeGrain, a kind of new visual type formaldehyde gas remover is proposed, this formaldehyde gas remover is a kind ofly to be handled and the porous carrier of " modification " under alkali condition by AHMT, ability with powerful seizure, absorption and elimination formaldehyde gas, and produce simultaneously significantly and change mauve change color into from white eliminating formaldehyde, inform whether the user has and have how much formaldehyde to be eliminated." modification " can comprise one or more known formaldehyde catching agent when handling, eliminate effect to promote formaldehyde.
Another object of the present invention is to propose a kind of new formaldehyde simple detection method, the method employing is a kind of to be handled and the porous carrier particle of " modification " under alkali condition by AHMT, formed formaldehyde detects pearl can absorbing formaldehyde and produce the aubergine product with formolite reaction, and can understand concentration of formaldehyde in environment or the sample according to shade.
The content of invention
A kind of energy that the present invention proposes is caught, adsorbs, is eliminated gas formaldehyde and shows that by change color formaldehyde elimination result's visual type formaldehyde gas remover and formaldehyde detect pearl and their preparation method, wherein: visual type formaldehyde gas remover by porous carrier through 4-amino-3-hydrazine-5-sulfydryl-1,2,4-triazole (being called for short AHMT) and at least a formaldehyde catching agent be synchronous or step-by-step processing acquisition under alkali condition; Through 4-amino-3-hydrazine-5-sulfydryl-1,2, handle under alkali condition and obtain by 4-triazole (being called for short AHMT) by porous carrier for visual type formaldehyde gas detection pearl.Wherein porous carrier can be solid silicone, molecular sieve, zeolite, aluminium oxide, the calcium chloride material with good adsorption function, can be powder, can also be rule or irregular particle.Porous carrier can also be a filter paper in addition.The part by weight scope of AHMT consumption and porous carrier is 1: 1, and 000,000 to 1: 5, optimum range was 1: 1,000 to 1: 100.Alkali condition is provided by potassium hydroxide, NaOH, bicarbonate, phosphate, borate, ammonium chloride-chlorine water solution and keeps, and the pH scope is 7 to 14, and optimum range is 9 to 11.
Formaldehyde catching agent can be a kind of in the following material or several combination, and combination comprises different classes of combination of compounds, also comprises different combination of compounds in the same classification:
● sour acyl hydrazine compounds: the acyl hydrazine of the single and dicarboxylic acids of adipic acid two acyl hydrazines, 3-ammonia propionic acid acyl hydrazine, malonic acid two acyl hydrazines, succinic acid two acyl hydrazines, ethanedioic acid acyl hydrazine, acetic acid acyl hydrazine, the rudimentary representative examples of saturated aliphatic of propionic acid acyl hydrazine;
● organic amino compounds: urea, melamine, dicyan diamides, ethene urea, propylene urea, monoethanolamine, oxalylurea;
● the acrylic acid acyl diamine family macromolecule compound of representing with following molecular formula:
In the formula: X is hydrogen or methyl
A be acrylate unit, methacrylate unit, acrylamide unit, Methacrylamide unit or above-mentioned substance add the water decomposition product.Wherein acrylate unit is generally acrylic acid methyl ester, ethyl ester, butyl ester, 2-ethylhexyl etc., and methacrylate unit is generally methyl ester, ethyl ester, the butyl ester of methacrylic acid.
● other class material: as tea powder, Tea Polyphenols, canella extract, flour.
Above-mentioned formaldehyde catching agent amount ranges is calculated by the part by weight with porous carrier, and be respectively: sour acyl hydrazine compounds amount ranges is 1: 50, and 000 to 1: 3, optimum range was 1: 500 to 1: 50; Organic amino compounds amount ranges is 1: 5, and 000 to 1: 2, optimum range was 1: 50 to 1: 5; Acrylic acid acyl diamine family macromolecule compound amount scope is 1: 50, and 000 to 1: 3, optimum range was 1: 500 to 1: 50; Other class material amount ranges is 1: 5, and 000 to 1: 2, optimum range was that optimum range is 1: 50 to 1: 5.
Comprise the following step by porous carrier through AHMT handles the visual type formaldehyde eliminating agent that obtains under alkali condition preparation technology: AHMT is dissolved in an amount of alkaline solution, soaks into porous carrier, vacuum drying afterwards, sealing is preserved.
Or the preparation technology who handles the visual type formaldehyde eliminating agent that obtains synchronously through AHMT and one or more formaldehyde catching agent under alkali condition by porous carrier comprises the following step: AHMT and formaldehyde catching agent are dissolved in the alkaline solution, soak into porous carrier, vacuum drying afterwards, sealing is preserved.
Comprise the following step by porous carrier through the preparation technology of AHMT and one or more the formaldehyde catching agent visual type formaldehyde eliminating agent that step-by-step processing obtains under alkali condition: the AHMT that will be dissolved in earlier in the alkaline solution soaks into porous carrier, be infiltrated on formaldehyde eliminating agent after the vacuum drying again, vacuum drying afterwards, sealing is preserved.Or earlier formaldehyde eliminating agent is soaked into carrier, and soak into the AHMT that is dissolved in the alkaline solution after the vacuum drying again, vacuum drying afterwards, sealing is preserved.
Above-mentioned visual type formaldehyde eliminating agent can be positioned among the vessel of wall perforate, make various types of formaldehyde and eliminate product, box-like as (but being not limited to), peviform, the bag shape, tubulose, block, graininess, can also be positioned over material with good permeability as (but being not limited to) nonwoven, in the pocket that fiber cloth is made, the outside seals with air-locked material such as masking foil, time spent Kaifeng places in the automobile, in the cabinet, in the drawer, indoor, desk is first-class, seizure is arranged, absorption, eliminate the function of gas formaldehyde, and correspondingly produce from white and change, thereby inform whether the user has and have how much formaldehyde to be eliminated to mauve shade.
The present invention proposes can absorbing formaldehyde and produce change color with formolite reaction and detect pearl with the formaldehyde that shows the formaldehyde pollution level, is to handle acquisition by the porous particles carrier through AHMT under alkali condition.The porous particles carrier can be the rule particle of solid silicone, molecular sieve, zeolite, aluminium oxide, calcium chloride, is generally spherical, can also make other shape.The part by weight scope of AHMT consumption and porous carrier is 1: 1, and 000,000 to 1: 5, optimum range was 1: 1,000 to 1: 100.Alkali condition is provided by potassium hydroxide, NaOH, bicarbonate, phosphate, borate, ammonium chloride-chlorine water solution and keeps, and the pH scope is 7 to 14, and optimum range is 9 to 11.Preparation technology comprises the following step: AHMT is dissolved in the alkaline solution, soaks into the porous carrier particle, and vacuum drying afterwards, sealing is preserved.
Above-mentioned formaldehyde detects pearl and can be positioned among the small-sized vessel of transparent wall perforate, can also be positioned in the small-sized pocket made from the material of good permeability such as nonwoven, fiber cloth, the outside seals with air-locked material such as masking foil, time spent Kaifeng places in the pocket, in the automobile, in the cabinet, drawer, indoor, desk is first-class, energy adsorbed gas formaldehyde and generation change to mauve shade from white, thereby inform whether have and probably have how much formaldehyde to pollute in user's test environment.The user also can detect pearl in formaldehyde with the immersion drop of food, becomes aubergine if detect pearl from white, shows that then tested food contains formaldehyde and pollutes.
Advantage of the present invention is the ability that has powerful seizure, absorption and eliminate formaldehyde gas, and produces simultaneously significantly and change mauve change color into from white eliminating formaldehyde, informs whether the user has and have how much formaldehyde to be eliminated.Formaldehyde of the present invention detects pearl can absorbing formaldehyde and produce the aubergine product with formolite reaction, and can understand concentration of formaldehyde in environment or the sample according to shade.And the present invention uses simply, and Kaifeng allows formaldehyde eliminating agent be exposed to air ambient for clearance and gets final product, and operation such as do not need to spray, be coated with, spill; Formaldehyde and AHMT and stay on the formaldehyde eliminating agent solids with the product of formaldehyde catching agent and abandon subsequently do not cause secondary pollution.Formaldehyde detection pearl of the present invention is used simple, only needs that the detection pearl is exposed to air ambient to be detected and gets final product, and need not other operation, does not need to add any reagent, can observe change color at a plurality of time points, accomplish continuous detecting.
Another big advantage of the present invention is that product preparation process is simple, easily operation.
The specific embodiment
Embodiment 1
0.3g AHMT is in the 0.1M of 100ml NaOH solution in dissolving, takes by weighing the water-fast silica gel spherical particles of 100 grams and soaks wherein, and vacuum drying 4 hours under the room temperature obtains white visual type formaldehyde eliminating agent particle A after 10 minutes.The visual type formaldehyde eliminating agent particle A of part preparation is put into glass culture dish, place the air ambient 24 hours that contains 0.1mg/m3 formaldehyde, the formaldehyde eliminating agent particle becomes aubergine by white.
Embodiment 2
Dissolving 0.3g AHMT and 20g urea take by weighing the water-fast silica gel spherical particles of 100 grams and soak wherein in the 0.1M of 100ml NaOH solution, and 50 ℃ of vacuum drying are 2 hours after 10 minutes, obtain white visual type formaldehyde eliminating agent particle B.The visual type formaldehyde eliminating agent B particle of part preparation is put into glass culture dish, place the air ambient 48 hours that contains 0.1mg/m3 formaldehyde, the formaldehyde eliminating agent particle becomes aubergine by white.
Embodiment 3
Dissolving 0.3g AHMT takes by weighing the water-fast silica gel spherical particles of 100 grams and soaks wherein in the 0.1M of 100ml NaOH solution, and vacuum drying under the room temperature after 10 minutes was taken out after 3 hours.Soaked 10 minutes with 20% aqueous solution of urea, 50 ℃ of vacuum drying 2 hours obtain white visual type formaldehyde eliminating agent particle C again.The visual type formaldehyde eliminating agent particle C of part preparation is put into glass culture dish, place the air ambient 48 hours that contains 0.1mg/m3 formaldehyde, the formaldehyde eliminating agent particle becomes aubergine by white.
Embodiment 4
The urea of dissolving 20g takes by weighing the water-fast silica gel spherical particles of 100 grams and soaks wherein in water, and 50 ℃ of vacuum drying are 2 hours after 10 minutes.0.1M NaOH solution with the 100ml that has dissolved 0.3g AHMT soaks again, and vacuum drying is 3 hours under the room temperature, obtains white visual type formaldehyde eliminating agent particle D.The visual type formaldehyde eliminating agent particle D of part preparation is put into glass culture dish, place the air ambient 48 hours that contains 0.1mg/m3 formaldehyde, the formaldehyde eliminating agent particle becomes aubergine by white.
Embodiment 5
The part visual type formaldehyde eliminating agent particle A of preparation among the embodiment 1 is put into glass culture dish, place the air ambient 24 that contains 0.1mg/m3 acetaldehyde little right, the formaldehyde eliminating agent grain color is constant.Acetaldehyde is replaced into propionic aldehyde, benzaldehyde, benzene,toluene,xylene, ammonia, nitrogen dioxide or sulfur dioxide, and the formaldehyde eliminating agent grain color is constant.Show that this kind formaldehyde eliminating agent PARA FORMALDEHYDE PRILLS(91,95) has specificity.
Embodiment 6
The part visual type formaldehyde eliminating agent particle A of preparation among the embodiment 1 is put into glass culture dish, place in 3 days, new car in newly-decorated the room in 2 days, wardrobe is interior or drawer 24 hours, the formaldehyde eliminating agent particle becomes aubergine by white.
Embodiment 7
0.5g AHMT is in the 0.1M of 100ml NaOH solution in dissolving, and the water-fast silica gel spherical particles that take by weighing 100 gram 6-8mm diameters soak wherein, and vacuum drying 4 hours under the room temperature obtains white formaldehyde and detects pearl after 10 minutes.Each detects the formalin of dripping last several variable concentrations on the pearl, and the visible detection pearl becomes aubergine by white after 20 minutes, and the high more then aubergine of concentration of formaldehyde is dark more in the solution that drips.
Claims (12)
1. visual type formaldehyde gas remover and formaldehyde detect pearl and their preparation method, wherein: visual type formaldehyde gas remover by porous carrier through 4-amino-3-hydrazine-5-sulfydryl-1,2,4-triazole (being called for short AHMT) and at least a formaldehyde catching agent be synchronous or step-by-step processing acquisition under alkali condition; Through 4-amino-3-hydrazine-5-sulfydryl-1,2, handle under alkali condition and obtain by 4-triazole (being called for short AHMT) by porous carrier for visual type formaldehyde gas detection pearl.
2. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described porous carrier can be the powder of solid silicone, molecular sieve, zeolite, aluminium oxide, calcium chloride or rule, irregular particle.Porous carrier can also be a filter paper.
3. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described alkali condition is to be provided and kept by potassium hydroxide, NaOH, bicarbonate, phosphate, borate, ammonium chloride-chlorine water solution, the pH scope is 7 to 14, and optimum range is 9 to 11.
4. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described 4-amino-3-hydrazine-5-sulfydryl-1,2, the part by weight scope of 4-triazole (being called for short AHMT) consumption and porous carrier is 1: 1,000,000 to 1: 5, optimum range was 1: 1,000 to 1: 100.
5. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described formaldehyde catching agent is a kind of in the following material or several combination:
A. sour acyl hydrazine compounds: the acyl hydrazine of the single and dicarboxylic acids of adipic acid two acyl hydrazines, 3-ammonia propionic acid acyl hydrazine, malonic acid two acyl hydrazines, succinic acid two acyl hydrazines, ethanedioic acid acyl hydrazine, acetic acid acyl hydrazine, the rudimentary representative examples of saturated aliphatic of propionic acid acyl hydrazine;
B. organic amino compounds: urea, melamine, dicyan diamides, ethene urea, propylene urea, monoethanolamine, oxalylurea;
C. the acrylic acid acyl diamine family macromolecule compound of representing with following molecular formula:
In the formula: X is hydrogen or methyl
A be acrylate unit, methacrylate unit, acrylamide unit, Methacrylamide unit or above-mentioned substance add the water decomposition product, wherein acrylate unit is acrylic acid methyl ester, ethyl ester, butyl ester, 2-ethylhexyl, and methacrylate unit is methyl ester, ethyl ester, the butyl ester of methacrylic acid;
D. other class material: tea powder, Tea Polyphenols, canella extract, flour.
6. detect pearl and their preparation method according to claim 1,5 described a kind of visual type formaldehyde gas removers and formaldehyde, it is characterized in that: described formaldehyde catching agent amount ranges, calculate by part by weight with porous carrier, be respectively: sour acyl hydrazine compounds amount ranges is 1: 50,000 to 1: 3, optimum range was 1: 500 to 1: 50; Organic amino compounds amount ranges is 1: 5, and 000 to 1: 2, optimum range was 1: 50 to 1: 5; Acrylic acid acyl diamine family macromolecule compound amount scope is 1: 50, and 000 to 1: 3, optimum range was 1: 500 to 1: 50; Other class material amount ranges is 1: 5, and 000 to 1: 2, optimum range was that optimum range is 1: 50 to 1: 5.
7. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: the synchronic preparation method of described formaldehyde gas remover is with 4-amino-3-hydrazine-5-sulfydryl-1,2,4-triazole (being called for short AHMT) and formaldehyde catching agent are dissolved in the alkaline solution, soak into porous carrier, vacuum drying afterwards, sealing is preserved.
8. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: the branch one step preparation method of described formaldehyde gas remover is for being dissolved in AHMT the infiltration porous carrier in the alkaline solution earlier, be infiltrated on formaldehyde eliminating agent after the vacuum drying again, vacuum drying afterwards, sealing is preserved; Or soak into porous carrier with formaldehyde eliminating agent earlier, and soak into the AHMT that is dissolved in the alkaline solution after the vacuum drying again, vacuum drying afterwards, sealing is preserved.
9. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: the porous carrier that described visual type formaldehyde gas detects pearl is the rule particle of solid silicone, molecular sieve, zeolite, aluminium oxide, calcium chloride.
10. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described visual type formaldehyde gas detects the preparation method of pearl for AHMT is dissolved in the alkaline solution, soak into the porous carrier particle, vacuum drying afterwards, sealing is preserved.
11. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described formaldehyde gas remover product can be made box-like, peviform, bag shape, tubulose, bulk, granular different product form, and Kaifeng is placed in the automobile, in the cabinet, in the drawer, on indoor, the desk.
12. a kind of visual type formaldehyde gas remover according to claim 1 and formaldehyde detect pearl and their preparation method, it is characterized in that: described visual type formaldehyde gas remover can catch, adsorb, eliminates gas formaldehyde with the detection pearl and also show formaldehyde elimination result by the variation of shade.
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| CN100507149C (en) * | 2005-06-09 | 2009-07-01 | 叶殷如 | Paper or cloth for removing formaldehyde and indoor organic volatile matter |
| CN101376050B (en) * | 2007-08-29 | 2011-10-26 | 旭玻璃纤维股份有限公司 | Aldehyde capture agent and construction material using the same |
| CN102527228A (en) * | 2011-12-31 | 2012-07-04 | 南京亿谱环境服务有限公司 | Novel visible color change formaldehyde scavenger |
| CN102590199A (en) * | 2012-02-07 | 2012-07-18 | 长春美泰科技有限公司 | Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method |
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| CN100507149C (en) * | 2005-06-09 | 2009-07-01 | 叶殷如 | Paper or cloth for removing formaldehyde and indoor organic volatile matter |
| CN101376050B (en) * | 2007-08-29 | 2011-10-26 | 旭玻璃纤维股份有限公司 | Aldehyde capture agent and construction material using the same |
| CN102527228B (en) * | 2011-12-31 | 2015-11-18 | 南京亿谱环境服务有限公司 | A kind of formaldehyde scavenger of visible color change |
| CN102527228A (en) * | 2011-12-31 | 2012-07-04 | 南京亿谱环境服务有限公司 | Novel visible color change formaldehyde scavenger |
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