CN112337303A - Biodegradable formaldehyde scavenger - Google Patents
Biodegradable formaldehyde scavenger Download PDFInfo
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- CN112337303A CN112337303A CN202011313365.1A CN202011313365A CN112337303A CN 112337303 A CN112337303 A CN 112337303A CN 202011313365 A CN202011313365 A CN 202011313365A CN 112337303 A CN112337303 A CN 112337303A
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- formaldehyde scavenger
- biodegradable
- formaldehyde
- photocatalyst powder
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 384
- 239000002516 radical scavenger Substances 0.000 title claims abstract description 101
- 239000011941 photocatalyst Substances 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 58
- 241000196324 Embryophyta Species 0.000 claims abstract description 55
- 239000000376 reactant Substances 0.000 claims abstract description 44
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 26
- AFHJQYHRLPMKHU-XXWVOBANSA-N Aloin Natural products O=C1c2c(O)cc(CO)cc2[C@H]([C@H]2[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O2)c2c1c(O)ccc2 AFHJQYHRLPMKHU-XXWVOBANSA-N 0.000 claims abstract description 18
- 244000062730 Melissa officinalis Species 0.000 claims abstract description 18
- 235000010654 Melissa officinalis Nutrition 0.000 claims abstract description 18
- CPUHNROBVJNNPW-UHFFFAOYSA-N aloin A Natural products OC1C(O)C(O)C(CO)OC1OC1C2=CC(CO)=CC(O)=C2C(=O)C2=C(O)C=CC=C21 CPUHNROBVJNNPW-UHFFFAOYSA-N 0.000 claims abstract description 18
- AFHJQYHRLPMKHU-WEZNYRQKSA-N aloin B Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1[C@H]1C2=CC(CO)=CC(O)=C2C(=O)C2=C(O)C=CC=C21 AFHJQYHRLPMKHU-WEZNYRQKSA-N 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- AFHJQYHRLPMKHU-UHFFFAOYSA-N isobarbaloin Natural products OC1C(O)C(O)C(CO)OC1C1C2=CC(CO)=CC(O)=C2C(=O)C2=C(O)C=CC=C21 AFHJQYHRLPMKHU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000341 volatile oil Substances 0.000 claims abstract description 18
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims abstract description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000292 calcium oxide Substances 0.000 claims abstract description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 13
- GKRZNOGGALENQJ-UHFFFAOYSA-N n-carbamoylacetamide Chemical group CC(=O)NC(N)=O GKRZNOGGALENQJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 46
- 239000008367 deionised water Substances 0.000 claims description 39
- 229910021641 deionized water Inorganic materials 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 24
- 239000001569 carbon dioxide Substances 0.000 claims description 24
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 16
- 229940105902 mint extract Drugs 0.000 claims description 15
- 235000020737 peppermint extract Nutrition 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract description 2
- 235000006679 Mentha X verticillata Nutrition 0.000 abstract 1
- 235000002899 Mentha suaveolens Nutrition 0.000 abstract 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000002000 scavenging effect Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 blockboard Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0245—Nitrogen containing compounds being derivatives of carboxylic or carbonic acids
- B01J31/0249—Ureas (R2N-C(=O)-NR2)
-
- B01J35/19—
-
- B01J35/39—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Abstract
The invention discloses a biodegradable formaldehyde scavenger, which comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, the catalyst is acetylurea, the main components of the biodegradable formaldehyde scavenger are aloin, mint extracts, nevadamine and lemon balm essential oil which are all extracted from plants, the biodegradable formaldehyde scavenger has good formaldehyde adsorption and removal effects, the product is more natural, the chemical additive content is low, the photocatalyst powder is additionally used, and the formaldehyde scavenger can slowly and naturally degrade in the formaldehyde removal process, the chemical residue of the product is reduced, and the natural pollution-free effect of the scavenging agent is ensured.
Description
Technical Field
The invention relates to the technical field of indoor air purification, in particular to a biodegradable formaldehyde scavenger.
Background
Formaldehyde in indoor air has become a main pollutant affecting human health, and especially formaldehyde in air in winter is the most harmful to human body. The formaldehyde source in domestic air mainly comprises the following aspects: 1. it is used as artificial board for indoor decoration, such as plywood, blockboard, medium density fiberboard, shaving board, etc. The adhesive used for producing the artificial board takes formaldehyde as a main component, and the formaldehyde which is remained in the board and does not participate in the reaction can be gradually released to the surrounding environment, so that the adhesive is a main body for forming the formaldehyde in the indoor air. 2. Furniture made of artificial boards. Some manufacturers use unqualified plates for pursuing profit, or use poor glue when adhering veneering materials, and the formaldehyde in the plates and the glue seriously exceeds the standard. 3. Other various decorative materials containing formaldehyde and possibly emitting to the outside, such as wall cloth, wall paper, chemical fiber carpet, paint, coating and the like.
The concentration of formaldehyde in indoor air is related to the following four factors: indoor temperature, indoor relative humidity, degree of loading of indoor materials (i.e., formaldehyde emitting material surface area per cubic meter of indoor space), indoor air flow flux. The strength of formaldehyde emission is exacerbated under high temperature, high humidity, negative pressure, and high load conditions. Usually, the formaldehyde release period can be as long as 3-10 years.
The existing formaldehyde scavenger is generally synthesized by chemical raw materials, has certain chemical stimulation, and can cause certain chemical residues after being scavenged, so that people's health is still harmed.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a biodegradable formaldehyde scavenger which comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, and the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part of 1: 1.
The invention also comprises a catalyst which is acetylurea.
As a preferred technical scheme of the invention, the photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide.
As a preferred technical scheme of the invention, the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 20-80 parts, 10-20 parts and 10-20 parts by mass.
As a preferred technical scheme of the invention, the plant formaldehyde scavenger is prepared from deionized water, aloin, a mint extract, nevadin and lemon balm essential oil.
As a preferred technical scheme, the addition amounts of the deionized water, the aloin, the mint extract, the nevadin and the lemon balm essential oil are respectively 30 parts, 30-40 parts, 20-30 parts, 10-20 parts and 10-20 parts by mass.
As a preferable technical scheme of the invention, the plant formaldehyde scavenger also comprises an auxiliary reactant, wherein the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC.
In a preferable technical scheme of the invention, the addition amount of the auxiliary reactant is 20-30 parts by mass.
The invention has the beneficial effects that: the main components of the formaldehyde scavenger are aloin, mint extract, nevadin and lemon balm essential oil which are all extracted from plants, so that the formaldehyde scavenger has better effects of adsorbing and scavenging formaldehyde, is more natural, has low chemical additive content, is supplemented with photocatalyst powder, can slowly and naturally degrade in the process of scavenging formaldehyde, reduces the chemical residue of the product, and ensures that the scavenger is natural and pollution-free.
Detailed Description
While the preferred embodiments of the present invention will be described in conjunction with the following description, it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
First, an embodiment
Example 1:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 2:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, and the addition amount of the auxiliary reactant is 20 parts by mass.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 3:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 30 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 4:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing 30 parts by mass, 15 parts by mass and 15 parts by mass of super-active nano silver, deionized water and nano carbon dioxide.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 5:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 50 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 6:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing 30 parts by mass, 15 parts by mass and 20 parts by mass of super-active nano silver, deionized water and nano carbon dioxide.
The plant formaldehyde scavenger is prepared from 30 parts, 20 parts, 10 parts and 10 parts of deionized water, 30 parts, 20 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 7:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 40 parts, 30 parts, 10 parts and 10 parts of deionized water, 40 parts, 30 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 8:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts, 25 parts, 10 parts and 10 parts of deionized water, 30 parts, 25 parts, 10 parts and 10 parts of aloin, mint extract, nevadin and lemon balm essential oil by mass.
Example 9:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts by mass, 20 parts by mass and 10 parts by mass of deionized water, aloin, a mint extract, nevadin and lemon balm essential oil.
Example 10:
a biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, wherein the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part ratio of 1:1, the plant formaldehyde scavenger also comprises an auxiliary reactant, the auxiliary reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC, the addition amount of the auxiliary reactant is 20 parts by mass, and the catalyst is acetyl urea.
The photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are respectively 40 parts, 15 parts and 15 parts by mass.
The plant formaldehyde scavenger is prepared from 30 parts by mass, 10 parts by mass and 20 parts by mass of deionized water, aloin, a mint extract, nevadin and lemon balm essential oil.
The preparation method of the biodegradable formaldehyde scavenger in any embodiment comprises the following steps:
step 1 preparation of photocatalyst powder
Mixing the super-active nano silver and the nano carbon dioxide in proportion, and adding deionized water in proportion for granulation; drying the mixed materials in the air, calcining at high temperature of 800 ℃ for 3-4h, taking out the materials after calcining, drying in the air, and collecting photocatalyst powder after sequentially carrying out superfine grinding and sieving; there are embodiments in which co-reactants and catalyst are added, with co-reactants and catalyst being mixed together in proportion to the above operation.
Step 2, preparing the plant formaldehyde scavenger
Mixing aloin, herba Menthae extract, nevadensis and lemon balm essential oil at a certain proportion, sequentially adding into a reaction kettle, continuously stirring while adding, controlling the temperature in the reaction kettle at 25-45 deg.C for 1h, and stirring thoroughly until all components are dissolved to obtain a mixed solution; and measuring the pH value of the mixed solution, adjusting the pH value to 7-8 to obtain the neutral formaldehyde scavenger, and storing for later use.
Step 3, mixing the prepared photocatalyst powder and the plant formaldehyde scavenger according to the proportion of 1:1, mixing and stirring uniformly by a stirrer.
Step 4 comparison of the various examples
All the control group solvents of examples 1 to 10 were prepared by the above procedure, baoli board (purchased from xxxx wood, thickness 2.5mm, size 150mm × 150 mm) was used as the experimental material, the temperature of the experimental environment was controlled to (25 ± 2) ° c, relative humidity was controlled to (30 ± 10)%, one control group was selected without any treatment, and as the reference object, the purification efficiency and purification efficiency durability of formaldehyde were measured by the method of JC/T1074-2008, and the experimental results were shown in table 1, and the formaldehyde content was measured by the method of GB/T16129-.
TABLE 1 purification efficiency and purification durability test of Formaldehyde
The purification efficiency of the experimental group is percent, and the purification efficiency is durable percent
Control group 13.56 + -1.223.66 + -0.33
Example 186.95. + -. 4.3566.77. + -. 4.21
Example 292.86. + -. 3.5380.52. + -. 3.32
Example 399.85. + -. 2.3186.35. + -. 1.47
Example 485.62. + -. 3.5871.63. + -. 3.57
Example 590.43. + -. 2.6980.62. + -. 3.41
Example 690.85. + -. 3.9580.63. + -. 3.87
Example 791.85. + -. 4.6579.67. + -. 4.41
Example 890.85. + -. 4.3581.47. + -. 4.61
Example 992.35. + -. 4.3579.47. + -. 4.51
Example 1092.62. + -. 3.3578.91. + -. 3.62
As can be seen from the data shown in Table 1, the natural attenuation of formaldehyde was 13.56%, the experiment was established, examples 1 to 3 compared the effect of adding the co-reactant and the catalyst to the photocatalyst powder, the purification efficiency was 86.95% when the solvent contained both the non-co-reactant and the catalyst, and the purification efficiency was 99.85% when the co-reactant and the catalyst were added, and examples 4 to 10 did not show significant fluctuation when the content of the components of the photocatalyst powder and the plant formaldehyde scavenger was increased, and the results of comparative examples 3 and 4 to 10 showed that the amounts of the super-active nano-silver, the deionized water and the nano-carbon dioxide were 40 parts, 15 parts and 15 parts by mass, and the amounts of the deionized water, the aloin, the mint extract, the nevadin and the lemon balm essential oil were 30 parts by mass, The effects were best in the case of 30 parts, 20 parts, 10 parts and 10 parts.
TABLE 2 Effect of the Formaldehyde scavenging film on scavenging free Formaldehyde over time
Experimental group Formaldehyde content
1d 5d 10d 30d 60d 90d 120d
Control group 5.917.5812.6513.9812.0910.129.03
EXAMPLE 16.300.850.050.01 undetected 0.020.04
Example 26.130.420.03 undetected 0.03
EXAMPLE 36.210.09 undetected
EXAMPLE 46.170.920.130.02 undetected 0.01
EXAMPLE 56.130.580.05 undetected
Example 66.250.560.05 undetected 0.01
Example 76.310.510.04 undetected 0.02
EXAMPLE 86.230.090.02 undetected
Example 96.220.570.05 undetected 0.02
EXAMPLE 106.140.450.03 undetected
From the data obtained in table 2, it can be seen that in the tracking experiment process of 120 days, the formaldehyde content of the control group (without any treatment) is increased and then decreased, because the residual formaldehyde in the early-stage board is released continuously, and the natural decay in the later stage is lower than the formaldehyde release amount, while the formaldehyde content of the biodegradable formaldehyde scavenger test group using the invention is reduced continuously, the formaldehyde scavenging rate is as high as 86% -99%, and the formaldehyde content is not increased any more as the time is prolonged, therefore, the biodegradable formaldehyde scavenger can remove the formaldehyde content permanently, and simultaneously effectively remove the formaldehyde released from the board.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A biodegradable formaldehyde scavenger comprises photocatalyst powder and a plant formaldehyde scavenger, and is characterized in that the photocatalyst powder is adhered to the surface of the formaldehyde scavenger, and the photocatalyst powder and the plant formaldehyde scavenger are mixed according to the mass part of 1: 1.
2. The biodegradable formaldehyde scavenger according to claim 1, further comprising a catalyst, wherein the catalyst is an acetyl urea.
3. The biodegradable formaldehyde scavenger according to claim 1, wherein the photocatalyst powder is prepared by mixing super-active nano silver, deionized water and nano carbon dioxide.
4. The biodegradable formaldehyde scavenger according to claim 3, wherein the addition amounts of the super-active nano silver, the deionized water and the nano carbon dioxide are 20-80 parts, 10-20 parts and 10-20 parts by mass, respectively.
5. The biodegradable formaldehyde scavenger according to claim 1, wherein the plant formaldehyde scavenger is selected from the group consisting of deionized water, aloin, peppermint extract, nevadin, lemon balm essential oil.
6. The biodegradable formaldehyde scavenger according to claim 5, wherein the deionized water, the aloin, the mint extract, the nevadin and the lemon balm essential oil are added in an amount of 30 parts, 30-40 parts, 20-30 parts, 10-20 parts and 10-20 parts by mass, respectively.
7. The biodegradable formaldehyde scavenger according to claim 1, further comprising a co-reactant, wherein the co-reactant is one or more of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate, and DCC.
8. The biodegradable formaldehyde scavenger according to claim 7, wherein the amount of the auxiliary reactant is 20 to 30 parts by mass.
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