CN101670233A - Method for eliminating volatile organic compounds such as formaldehyde and benzene in furniture - Google Patents
Method for eliminating volatile organic compounds such as formaldehyde and benzene in furniture Download PDFInfo
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- CN101670233A CN101670233A CN200910192708A CN200910192708A CN101670233A CN 101670233 A CN101670233 A CN 101670233A CN 200910192708 A CN200910192708 A CN 200910192708A CN 200910192708 A CN200910192708 A CN 200910192708A CN 101670233 A CN101670233 A CN 101670233A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a method for eliminating volatile organic compounds such as formaldehyde and benzene in furniture; strippers which are respectively sprayed on all surfaces of furniture platepieces which are machined, assembly parts which are sprayed with paint, leathers before being assembled, textile fiber material, plastics, foaming fillers and the like after being pulverized, and thefurniture plate pieces, the assembly parts, the leathers, the textile fiber material, the plastics, the foaming fillers and the like are separately placed and are naturally dried for more than twentyfour hours, and then are assembled after being qualified by detection; the strippers are extracted from tree branches, stems, flower and fruits; after being treated, the removal rate of residual organic compounds in the furniture is high, and the removal rate of formaldehyde can reach more than 95 percent, and the removal rate of benzene and derivatives thereof is more than 93 percent and the removal rate of total volatile organic compounds (TVOC) can reach more than 98 percent; the safety is good, the pertinence is strong without causing secondary pollution of the furniture and environment.
Description
Technical field
The present invention relates to a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture.
Background technology
Along with living standards of the people improve constantly and to the reinforcement of health and environmental consciousness, people require more and more higher to harmful substance residual in the furniture, and need use wood-based plates such as glued boards, core-board, medium density fibre board (MDF), high density fiberboard, particieboard in a large number in furniture is made, and these sheet materials need use the adhesive based on Lauxite in process of production, in the sheet material the residual or formaldehyde do not deposited of reaction will be gradually towards periphery environment discharge; Simultaneously, furniture be connected and fixed and assembling procedure in generally use adhesive, and this bonding process has stayed the volatile VOC materials of low boiling such as benzene, dimethylbenzene, formaldehyde at least; In addition, painting process makes paint usually, comprise photosensitive resin, amino resin coatings, lacquer, acrylic acid, unsaturated polyester varnish, polyurethane paint, nitrate paint, alkyd paint etc., this class furniture lacquer is diluent with the organic solvent, be used with synthetic resin (as polyester, epoxy, organosilicon etc.), pigment, filler, auxiliary agent etc., divide multiple working procedures such as priming paint, solidified paint, finish paint.Wherein diluent, auxiliary agent are multiple organic mixture, the material of the spraying face of remaining in has more than 50 kind of organic matters such as benzene,toluene,xylene, ethyl acetate, butyl butyrate, acetone, ether, butanols, cyclohexanone, TDI (toluene di-isocyanate(TDI)), butyl acetate, formaldehyde, acetaldehyde, formic acid, and these materials can discharge in a large number to air in painting process or construction finish back a period of time; Also have, the cladding in the furniture, textile fabric thing, plastics, foam stuffing etc. are also inevitable residual volatile organic compounds such as formaldehyde and benzene.So it is particularly urgent to furniture manufacturing industry how to eliminate these hazard residue materials.At present, existing removing method generally adopts in physical adsorption techniques such as active carbon adsorption and the chemisorbed and technology, and the physical adsorption techniques time is long, efficient is low and it is undesirable to eliminate effect; And generally adopt complexing technology and formaldehyde to react with technology in the chemisorbed, destroy pernicious gas molecular structures such as formaldehyde, benzene, thereby reach the concentration that reduces formaldehyde etc., the shortcoming of using this series products is that effect is limited by full closing property, generally must repeatedly use and can not in lacquer painting and cladding, textile fabric thing, plastics, foam stuffing etc., directly use, and control does not with great difficulty cause secondary pollution.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of efficient height, effective, with strong points, can not cause secondary pollution, can eliminate the method for volatile organic compounds such as formaldehyde and benzene in each assembly of furniture.
For addressing the above problem, a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention is: remover of the corresponding models of each surface spraying after atomizing such as the cladding before the Furniture panel bulk-breaking after finishing respectively at machined, the assembly after finishing of spraying paint, the assembling, textile fabric thing, plastics, foam stuffing, placed apart and more than the air dry twenty four hours, assemble again after qualified through inspecting by random samples.
A kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention, its process equipment comprises air compressor, liquid storage filling, gas pipeline, liquid-transport pipe-line, workbench, exhaust blower and spray gun.Be stored in the remover of liquid storage in irritating and be transferred to through liquid-transport pipe-line and respectively organize workbench, on liquid-transport pipe-line, be provided with and eliminate the liquid joint; Air compressor is transported to pressure-air and respectively organizes on the workbench through gas pipeline simultaneously, is provided with compressed air joint on gas pipeline; Utilize the spray gun will be through the remover of the corresponding model after the pressure-air atomizing, spray to Furniture panel bulk-breaking after machined is finished, each surface such as the assembly after finishing of spraying paint, the cladding before the assembling, textile fabric thing, plastics, foam stuffing, placed apartly then carry out more than the air dry twenty four hours, assemble again after qualified through inspecting by random samples in leaving standstill the workshop.
The remover that is used for eliminating volatile organic compounds such as furniture formaldehyde and benzene of the present invention extracts main tree bar from plant, stem, flower, the fruit.There is compound odorous in the liquid that extracts, these compounds odorous have the compound of large amount of complex, one of its function is infiltration, diffusion, this material heavily fortified point is shouldered the effect that remover active ingredient enters the construction material nexine of carrying, their overwhelming majority are the main constituents of vegetable oil or plant juice, can be divided into four big classes at present:
(1) terpene, these naturally occurring compounds are most important compositions in the vegetable oil.They all have common molecular formula C
10H
16, for example: pinane, terpane etc.
(2) straight chain compound, forming this a part of compound has aldehyde, pure and mild ketone.Extensively be present in the volatilizable oil that extracts by fruit, for example: certain herbaceous plants with big flowers alcohol, laruyl alcohol etc.
(3) derivative of benzene extracts benzyl carbinol from attar of rose, can extract benzaldehyde, methyl benzoate etc. from narcissus juice.This compounds with from benzene, the compound of particularly deriving out identical molecular formula is arranged from propyl benzene.
(4) other compound, as: vanillic aldehyde, cinnamic acid and geranyl formate etc. all are to extract from vegetable oil or juice.
According to the difference of eliminating residual composition in the thing, match different plant extraction liquids, be mixed with 1# remover, the 2# remover of eliminating benzene and derivative thereof of eliminating formaldehyde, the 3# remover of eliminating total volatile organic compounds respectively.
Because the remover of apolegamy contains plurality of active ingredients, after system's atomizing, all be dispersed in furniture material (as artificial board, cortical material, textile of chemical fibre thing and furniture filler etc.) surface, active ingredient gos deep into the furniture material nexine rapidly and corresponding material (as formaldehyde etc.) reacts, and the organic pollution that remains in the furniture material is thoroughly removed.
Alcohols in the remover not only can react with the aldehyde in the furniture material, generates undemanding hemiacetal molecule, and can react with organic acid.Organic acid is one of composition of the foul smell in the furniture material, and the chief component of furniture flexible substrate peculiar smell especially is so the taste removal of alcohols contribution is maximum.
The mechanism of action of remover:
1. " kinetic energy effect " theory
Remover through preparing is after system's atomizing, and at the radius≤0.04mm of space diffusion drop, drop is under powerful aerodynamic condition, and also spread to nexine rapidly on contact substrate (mainly referring to the furniture flexible material) surface fast.Dropping liquid have very big surface can, average every mole is about tens kilocalories, the energy of this order of magnitude be in many elements bond energy 1/3rd to 1/2nd.The surface of dropping liquid is organic peculiar smell molecule of adsorption substrates effectively, simultaneously the main body configuration of the peculiar smell molecule that is adsorbed is changed, the chemical combination that has weakened in the peculiar smell molecule is strong, and the unstability of peculiar smell molecule is increased, and easy and other molecule carries out chemical reaction.Be called " kinetic energy effect " theory.
2, " mobile active " theory
Because the active ingredient of remover derives from plant, so great majority contain two being healthy and strong of a plurality of conjugation and are in the middle of their, provide strong duplet ability, increase the reactivity of it and peculiar smell molecule so again.
3, " catalytic reaction " theory
The organic pollution that is eliminated agent absorption contacts with airborne oxygen, the pollutant of this moment makes its reactivity increase because of above-mentioned two kinds of reasons, changed mechanism with oxygen reaction, thereby can be at normal temperatures and pressures and oxygen generation catalytic oxidation, and generate nonpoisonous and tasteless molecule, and as: water, oxygen, sulfate ion etc.
Can there be following several reaction in remover active ingredient and corresponding organic contamination:
A) acid-base reaction
Contain alkaloid in the remover, it can with the reaction of acidic materials such as hydrogen sulfide.Different with general acid-base reaction is, general acid-base reaction is poisonous, and edible not can not biodegradation.And remover is biodegradable, nontoxic.
B) catalytic oxidation
And for example hydrogen sulfide can not react with the oxygen in the leatherware top layer in the ordinary course of things, but under the catalytic action of remover, then can react with oxygen.
C) lewis acid alkali reaction
For example, the reaction of diphenyl sulfide and remover just belongs to this class, and diphenyl sulfide is a lewis acid, and nitrogen-containing compound therein belongs to Louis alkali.The both can react.
D) discuss from thermodynamic (al) angle, through the remover drop of atomizing, its radius≤0.04mm.In this case, be enough to destroy being good in the organic contamination molecule, make it unstable, easily decompose.
E) redox reaction
For example: formaldehyde has oxidisability, and the active ingredient in the remover has reproducibility.They can directly react.So no matter be the material of what character, the aldehydes removal effect is all very good.
Utilize a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention, residual organic matter clearance height in the furniture: the formaldehyde clearance reaches more than 95%, benzene and derivative clearance thereof are more than 93%, and total volatile organic compounds (TVOC) clearance is more than 98%; And security is good, with strong points, can not cause furniture and second environmental pollution.
Description of drawings
Fig. 1 is a kind of technology arrangement figure that eliminates the method for volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention.
Fig. 2 is the structural representation of the product detection system of a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention.
The specific embodiment
As shown in Figure 1, a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention, its process equipment comprises air compressor 21, liquid storage filling 22, gas pipeline 23, liquid-transport pipe-line 24, workbench 25, exhaust blower 26 and spray gun.Be stored in liquid storage and irritate remover in 22 and be transferred to through liquid-transport pipe-line 24 and respectively organize workbench 25, on liquid-transport pipe-line 24, be provided with and eliminate liquid joint 28; Air compressor 21 is transported to pressure-air and respectively organizes on the workbench 25 through gas pipeline 23 simultaneously, is provided with compressed air joint 27 on gas pipeline 23; Utilize the spray gun will be through the remover of the corresponding model after the pressure-air atomizing, spray to Furniture panel bulk-breaking after machined is finished, each surface such as the assembly after finishing of spraying paint, the cladding before the assembling, textile fabric thing, plastics, foam stuffing, placed apartly then carry out more than the air dry twenty four hours, assemble again after qualified through inspecting by random samples in leaving standstill the workshop.
Its concrete technological process is:
One. the elimination of gummed plate (Furniture panel bulk-breaking) residual organic matter
1. the elimination operation that promptly enters residual organic matter before the gummed plate (Furniture panel bulk-breaking) of getting some is assembled after its machined is finished:
A, check processing back gummed plate firsthand information, provide third party's environmental-protecting performance examining report as content of formaldehyde index, sheet material classification, supplier.Rank through confirming this batch sheet is no rank glued board (sees glued board handle after formaldehyde testing result table).
B, confirm after this gummed plate content of formaldehyde rank, irritate 1# remover in 22, press 40ml/m being stored in liquid storage
2Liquid application rate, the atomizing of compressed air pressurized utilizes spray gun that each surface of sheet material bulk-breaking is sprayed, the precedence of hydrojet is end face → hole, the riveting eye of bulk-breaking front → back side → side → end to end.
Concrete operation method: operator's right hand is got hold of the spray gun of regulating the atomizing radius, and the distance of muzzle and sheet material bulk-breaking remains between 20-30cm sprays, and left hand moves the sheet material bulk-breaking, move the sheet material bulk-breaking while spraying, want in a word not stay blank, the dead angle evenly comprehensively.According to the classification of sheet material and the content decision liquid application rate and the spraying number of times of formaldehyde.
C, liquid application rate: positive, back side consumption is identical; End face be just, back side doubling dose; Hole, riveting eye are the end face doubling dose, and the liquid application rate of each bulk-breaking material sees the following form:
The sheet material liquid application rate table of different stage
2, must in 4 hours, spray with batch sheet material bulk-breaking.Labelled, unified leaving in the environment of appointment.
3, handle the part resting period, according to the climate change rule, usually, the spring and summer sky resting period is 21 days, and sky resting period autumn and winter is 14 days, and the various bulk-breaking material resting periods see the following form:
Bulk-breaking resting period table
4, handle the detection that part is deposited expiration, detection system as shown in Figure 2, it comprises control device 7, the Temperature Humidity Sensor 8 of air inlet 1, air cleaner 2, aerial temperature and humidity regulating system 3, air velocity adjuster 4, air regulator 5, sealed compartment 6, air-flow velocity and air circulation, monitoring system 9, exhaust outlet 10, air sampling discharge 11, direct-reading methylene oxide detecting instrument 12, direct-reading benzene and the TVOC detector 13 of temperature and humidity.All treated bulk-breakings enter the sampling observation link after depositing expiration immediately, can roll off the production line after sampling observation is confirmed to meet the requirements, and then repeat above-mentioned operation for the bulk-breaking that does not reach requirement.The detection of sample:
(1) sampling
From every batch of bulk-breaking, randomly draw 5% sample, and the sample that extracts is wrapped in preprepared aluminium foil or the air-tightness Polythene Bag, each bag is sample of bag only, from selecting sample to putting in the bag, should not surpass 1 hour, and put into immediately in the sealed compartment 6 and test.The sample external packing should be indicated: bulk-breaking title, treatment system model, working solution model, handle the date, and resting periods etc. detect behind the balance 2h.
(2) detect
1. the preparation of sealed compartment 6
The construction volume of A, sealed compartment 6 is 40m
3(4 * 4 * 2.5) m;
The inwall village of B, sealed compartment 6 material should adopt natural instincts materials such as stainless steel, aluminium (frosted or beat the limit first), glass.
The service condition of C, sealed compartment should meet the following requirements:
1. humidity: 23+1 ℃; 2. relative humidity: 45% ± 5%; 3. air exchange rate: 1 ± 0.05 time/h; 4. the sample surface accords with near-space gas velocity: 0.1～0.3m/s; 5. before measuring bulk-breaking free formaldehyde, benzene,toluene,xylene and TVOC release, formaldehyde, benzene,toluene,xylene and TVOC content should be in " being lower than detection limit " or " not detecting level " in the interior pure air of test chamber.
D, before detection, should carry out work such as purification, damping, temperature adjustment test background values, at first clean the cabin inwall, become distilled water to clean twice with deionized water again, carry out dry decontamination then with alkaline cleaner.The air that purifies cleaning should be in eligible feeding, regulate temperature, humidity, air velocity, air-tightness etc., the test chamber parameter is transferred to stable test condition, under these conditions, balance 2h, measure the background concentration of formaldehyde, benzene,toluene,xylene and TVOC in the cabin with direct-reading methylene oxide detecting instrument 12, direct-reading benzene and TVOC detector 13, open test chamber then and put into sample, be subjected to the sample product towards last, be tiled in the bilge, make air velocity, detect behind the balance 2h equably from passed through by sample product surface.
2. formaldehyde and benzene and TVOC detector are monitored in real time
Use: the model of direct-reading methylene oxide detecting instrument 12 is the INTERSCAN-4160-2 type; The model of direct-reading benzene and TVOC detector 13 is PGM-7240 or PGM-7600 hand-held volatile organic matter detector.
Answer inspection apparatus whether to examine and determine before the detection, whether accurate, can operate as normal, obtain confirming laggard instrument zeroing, after the zeroing instrument probe is inserted the test chamber thief hatch and detect, survey background values in the cabin earlier, perform record;
After putting into sample in the sealed compartment 6, need continuous monitoring formaldehyde, benzene,toluene,xylene and TVOC concentration, every 15min observes the reading on each analyzer, observe and record bulk-breaking formaldehyde, benzene,toluene,xylene and the variation of TVOC burst size, up to continuous 4 measurement results all average ± 5% scope in, do not show and rise or downward trend that the result who is obtained is the mean concentration of formaldehyde, benzene,toluene,xylene and TVOC.
Testing result such as following table:
Glued board is handled back formaldehyde testing result:
Two. spray paint the furniture construction part residual benzene after finishing and the organic elimination of deriving thereof
1. the furniture construction part after finishing of spraying paint promptly enters residual organic matter after the second road finish paint drying elimination operation:
A, check that the original note of lacquer plate shows: sheet material classification, base coat, seal coat, the first road priming paint, the second road priming paint, the first road finish paint, dust lacquer, the second road finish paint; And content, the composition of nuisance quality such as pigment, filler, auxiliary agent, paint thinner.Whether every kind of material is with third party's environmental-protecting performance examining report.
Behind the benzene and the organic main component of deriving thereof that b, affirmation lacquer plate contain, utilize the 2# remover, press 10ml/m
2Liquid application rate spraying, compressed air pressurized atomizing utilizes spray gun that each surface of furniture construction part lacquer plate is sprayed, this link oil spout lacquer painting, concrete operation method is identical with the method for operating of elimination Furniture panel bulk-breaking.
C, execute liquor amount explanation: 10ml/m
2
2, must dispose in 4 hours with batch bulk-breaking, if bigger with batch bulk-breaking quantity, can take 4 hours ways once to handle several times, bulk-breaking disposes and deposits on request, can not pile pile together.
3, the lacquer plate is handled the part resting period: do not surpass 6 days.
4, the lacquer plate is handled the environmental-protecting performance detection after part expires: detection system as shown in Figure 2.All treated assemblies enter the sampling observation link after depositing expiration immediately, and sampling observation can be rolled off the production line after confirming to meet the requirements, and then repeats above-mentioned operation for the assembly that does not reach requirement, testing result such as following table.
The lacquer plate is handled back benzene and TVOC testing result:
Three. the elimination of residual organic matters such as furniture cladding, textile fabric thing, plastics, foam stuffing
The soft material of this class serves as the main object of eliminating with common volatile organic matter, utilizes the 3# remover, selects the liquid application rate and the spraying number of times of remover, and compressed air pressurized atomizing utilizes spray gun that it is sprayed.
Other operations are identical with the elimination operation of the above-mentioned furniture construction part after finishing that sprays paint.
Four. contrast experiment's testing result
Extract specification, model, two groups of samples of batch all identical A, B, wherein A group sample is to eliminate processing through utilizing a kind of method of eliminating volatile organic compounds such as formaldehyde and benzene in the furniture of the present invention to carry out pollutant, B group sample is then handled its contrast experiment's testing result such as following table without the elimination to pollutant:
Claims (3)
1. method of eliminating formaldehyde and benzene and total volatile organic compounds in the furniture, it is characterized in that: remover of the corresponding models of each surface spraying after atomizing such as the cladding before the Furniture panel bulk-breaking after finishing respectively at machined, the assembly after finishing of spraying paint, the assembling, textile fabric thing, plastics, foam stuffing, placed apart and more than the air dry twenty four hours, assemble again after qualified through inspecting by random samples.
2. a kind of method of eliminating formaldehyde and benzene and total volatile organic compounds in the furniture according to claim 1, it is characterized in that: its process equipment comprises air compressor (21), and liquid storage is irritated (22), gas pipeline (23), liquid-transport pipe-line (24), workbench (25), exhaust blower (26) and spray gun; Be stored in liquid storage and irritate remover in (22) and be transferred to through liquid-transport pipe-line (24) and respectively organize workbench, on liquid-transport pipe-line (24), be provided with and eliminate liquid joint (28); Air compressor (21) is transported to pressure-air and respectively organizes workbench (25) through gas pipeline (23) simultaneously, is provided with compressed air joint (27) on gas pipeline (23); Utilize the spray gun will be through the remover of the corresponding model after the pressure-air atomizing, spray to Furniture panel bulk-breaking after machined is finished, each surface such as the assembly after finishing of spraying paint, the cladding before the assembling, textile fabric thing, plastics, foam stuffing, placed apartly then carry out more than the air dry twenty four hours, assemble again after qualified through inspecting by random samples in leaving standstill the workshop.
3. according to the described a kind of method of eliminating formaldehyde and benzene and total volatile organic compounds in the furniture of claim 1, it is characterized in that: described remover effective ingredient is mainly extracted from the tree bar of plant, stem, flower, fruit, as Radix Isatidis, herba houttuyniae, cymose buckwheat rhizome, extractions such as menthol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910192708A CN101670233A (en) | 2009-09-25 | 2009-09-25 | Method for eliminating volatile organic compounds such as formaldehyde and benzene in furniture |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247751A (en) * | 2010-12-21 | 2011-11-23 | 刘青 | Spraying agent for reducing harmful substances in finishing and preparation method thereof |
| CN103752157A (en) * | 2014-01-26 | 2014-04-30 | 河北工程大学 | Catching agent of benzene series compounds and preparation method thereof |
| CN105056694A (en) * | 2015-08-10 | 2015-11-18 | 东莞市百叶中草药环境应用研究院 | CHA herbal medicine formaldehyde scavenging and purifying Chinese herbal medicine particles and composite filter screen containing same |
| CN106221614A (en) * | 2016-08-12 | 2016-12-14 | 美国三和（香港）化工科技集团有限公司 | A kind of chloroprene rubber adhesive agent and preparation method thereof |
| CN106366679A (en) * | 2016-08-30 | 2017-02-01 | 雷春生 | Preparation method of formaldehyde adsorbing and decomposing wood-plastic composite board |
| CN106621741A (en) * | 2016-12-19 | 2017-05-10 | 重庆医学检验试剂研究所 | Compound and application thereof in eliminating indoor dioxin pollution |
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| CN109621668A (en) * | 2018-12-07 | 2019-04-16 | 杭州合辰环境有限公司 | A kind of plant source reagent and preparation method thereof with function of removing formaldehyde |
| CN111226990A (en) * | 2020-02-24 | 2020-06-05 | 辽宁德尔嘉新材料科技有限公司 | Natural plant negative ion freshener for air sterilization and aldehyde removal and preparation method thereof |
| CN113426283A (en) * | 2021-06-23 | 2021-09-24 | 武汉生物工程学院 | Biological formaldehyde-removing air freshener and preparation method thereof |
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2009
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247751A (en) * | 2010-12-21 | 2011-11-23 | 刘青 | Spraying agent for reducing harmful substances in finishing and preparation method thereof |
| CN102247751B (en) * | 2010-12-21 | 2013-04-03 | 刘青 | Spraying agent for reducing harmful substances in finishing and preparation method thereof |
| CN103752157A (en) * | 2014-01-26 | 2014-04-30 | 河北工程大学 | Catching agent of benzene series compounds and preparation method thereof |
| CN105056694A (en) * | 2015-08-10 | 2015-11-18 | 东莞市百叶中草药环境应用研究院 | CHA herbal medicine formaldehyde scavenging and purifying Chinese herbal medicine particles and composite filter screen containing same |
| CN106221614A (en) * | 2016-08-12 | 2016-12-14 | 美国三和（香港）化工科技集团有限公司 | A kind of chloroprene rubber adhesive agent and preparation method thereof |
| CN106366679A (en) * | 2016-08-30 | 2017-02-01 | 雷春生 | Preparation method of formaldehyde adsorbing and decomposing wood-plastic composite board |
| CN106621741A (en) * | 2016-12-19 | 2017-05-10 | 重庆医学检验试剂研究所 | Compound and application thereof in eliminating indoor dioxin pollution |
| CN108704454A (en) * | 2018-06-28 | 2018-10-26 | 陈杰 | A kind of purifying processing device of organic exhaust gas absorbent and environment-friendly type organic exhaust gas |
| CN108704454B (en) * | 2018-06-28 | 2019-06-14 | 陈杰 | A kind of purifying processing device of organic exhaust gas absorbent and environment-friendly type organic exhaust gas |
| CN109621668A (en) * | 2018-12-07 | 2019-04-16 | 杭州合辰环境有限公司 | A kind of plant source reagent and preparation method thereof with function of removing formaldehyde |
| CN111226990A (en) * | 2020-02-24 | 2020-06-05 | 辽宁德尔嘉新材料科技有限公司 | Natural plant negative ion freshener for air sterilization and aldehyde removal and preparation method thereof |
| CN113426283A (en) * | 2021-06-23 | 2021-09-24 | 武汉生物工程学院 | Biological formaldehyde-removing air freshener and preparation method thereof |
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