CN109092024A - A kind of oil-soluble formaldehyde scavenger - Google Patents
A kind of oil-soluble formaldehyde scavenger Download PDFInfo
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- CN109092024A CN109092024A CN201811213020.1A CN201811213020A CN109092024A CN 109092024 A CN109092024 A CN 109092024A CN 201811213020 A CN201811213020 A CN 201811213020A CN 109092024 A CN109092024 A CN 109092024A
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- ball type
- type carrier
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- dicyandiamide
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- 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
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- 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
- B01D53/81—Solid phase processes
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
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- 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 kind of oil-soluble formaldehyde scavengers, belong to indoor air purification agent technical field, the dicyandiamide powdered reaction agent for specifically including ball type carrier and being adhered on ball type carrier, and the ball type carrier is modified through the octadecyl bi-quaternary ammonium salt surface N-；The present invention is hydrophobic structure by the modified ball type carrier surface formed of N- octadecyl bi-quaternary ammonium salt, ball type carrier can be adhered to plate surface to artificial board internal penetration；And the capture effect of N- octadecyl bi-quaternary ammonium salt gathers the gaseous formaldehyde around plate around ball type carrier, thus with dicyandiamide haptoreaction, after product hydrone is absorbed, dicyandiamide resin is gradually deposited in ball type carrier surface, it is adsorbed and removed via ball type carrier, three's collaboration, formaldehyde removal efficiency height, persistent.
Description
Technical field
The present invention relates to indoor air purification agent technical field, in particular to a kind of oil-soluble formaldehyde scavenger.
Background technique
Artificial board is exactly the leftover bits generated in process using timber, and addition chemical adhesive is fabricated to
Plate.There are many artificial board type, and there are commonly the dresses such as particieboard, medium-density plate, core-board, glued board and fire-proof plate
Decorations type artificial board.Because they have the characteristics that respectively it is different, be applied to different furniture manufacturing fields.Due to ureaformaldehyde tree
Rouge, phenolic resin etc. have the characteristics that cheap, anti-corruption is durable, use Lauxite, phenolic resin as adhesive, production
Artificial board is widely used in interior decoration building materials, still, is used containing Lauxite, phenolic resin as made from adhesive
Artificial board, plate body always contain a certain number of free formaldehydes, these free formaldehydes can be by during people's fitting-up
It is gradually released into room air, causes the pollution to indoor environment, formaldehyde is that modificator gene is prominent to the harm of human health
Become, and damaging action is generated to DNA, makes immunologic dysfunction or decline, cause the generation of various diseases.It conceals in artificial board
In the Form aldehyde release period be 7~8 years as long as, even up to 15 years, and the first three years be highest volatilize the phase, so remove formaldehyde be
One process grown slowly.
Existing formaldehyde scavenger is generally sprayed on artificial board surface and forms film, passes through physical adsorption techniques, anion
The purifying formaldehydes such as high pressure electrostatic precipitation technology or room-temperature catalytic oxidation method, physical adsorption techniques can only by nuisance adsorption storage,
And it cannot finally eliminate, and situations such as there are adsorption saturation and desorptions, therefore often to replace adsorbent material；Anion high pressure
Electrostatic technique is a kind of physical action process, can effectively remove the flue dust in air, but PARA FORMALDEHYDE PRILLS(91,95) removal effect is unobvious, secondly
Cost is high, and when use needs electricity consumption, can generate noise, be unfavorable for largely popularizing；Room-temperature catalytic oxidation method removes formaldehyde efficiency
Height, but can generate secondary pollution, such as methanol, formic acid, yuban other noxious materials, moieties can be also attached to
On plate, the quality of plate is influenced, and usually reversible reaction, when concentration of formaldehyde is lower than a threshold value, purifying formaldehyde efficiency
It is significantly affected；Secondly, the response area of film is limited, after film failure, the free formaldehyde in artificial board still can be a large amount of
Coming out for release, causes the pollution of room air.Therefore, the formaldehyde pollution in room air how is effectively eliminated, it has also become room
Interior environment security fields project urgently to be resolved.
Summary of the invention
The purpose of the present invention is to provide a kind of oil-soluble formaldehyde scavengers, pass through the modified shape of N- octadecyl bi-quaternary ammonium salt
At ball type carrier surface be hydrophobic structure, ball type carrier can be adhered to plate surface to artificial board internal penetration；And
The capture effect of N- octadecyl bi-quaternary ammonium salt gathers the gaseous formaldehyde around plate around ball type carrier, thus with double cyanogen
Amine haptoreaction, after product hydrone is absorbed, dicyandiamide resin is gradually deposited in ball type carrier surface, via ball type carrier
It is adsorbed and removed, three's collaboration, formaldehyde removal efficiency height, persistent.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of oil-soluble formaldehyde scavenger, including ball type carrier and the dicyandiamide powdered reaction being adhered on ball type carrier
Agent, the ball type carrier are modified through the octadecyl bi-quaternary ammonium salt surface N-.N- octadecyl bi-quaternary ammonium salt be quaternary sun from
Sub- surfactant is hydrophobic structure by the modified ball type carrier surface formed of N- octadecyl bi-quaternary ammonium salt, can be to people
Plate internal penetration is made, ball type carrier is adhered to plate surface；Secondly amino is contained in its hydrophobic end, can capture electronegativity
Formaldehyde carbonyl will be taken near matrix from the formaldehyde overflowed in plate, play the role of formaldehyde catching agent.
Further, the dicyandiamide powdered reaction agent with a thickness of 100~300nm.
It further, further include catalyst, the catalyst is acetylurea.Acetylurea is to the formaldehyde containing electron-withdrawing group
With good catalytic activity, the amido of acetylurea can provide electronics pair, and carbonyl can receive proton, therefore have both B alkali and L
The double properties of acid activate substrate formaldehyde and nucleopilic reagent dicyandiamide simultaneously in the reaction, to be catalyzed the addition of aldehyde radical and amine
Rapid reaction carries out, and improves reaction rate and formaldehyde removal rate.
Further, the spherical carrier particle size is 1.5~3 μm.
Further, the ball type carrier is mixed by china clay, clay powder and diatomite.
Further, the additive amount of the china clay, clay powder and diatomite is respectively 20~80 parts, 10~20 by mass
Part, 10~20 parts.
It further, further include auxiliary reactant in the ball type carrier, the auxiliary reactant is calcium oxide, five oxidations two
One of phosphorus, anhydrous sodium sulfate and DCC or a variety of.Calcium oxide, phosphorus pentoxide or anhydrous sodium sulfate are desiccant, DCC (two
Carbodicyclo hexylimide) it is reaction dehydrating agent, the moisture generated in absorbable reaction process keeps reaction balance positive mobile,
Reaction efficiency is improved, and forms solid product, secondly reduces and has even prevented the problem of urea-formaldehyde resin adhesive decomposes in case of wet.
Further, the additive amount of the auxiliary reactant is 20~30 parts by mass.
Ball type carrier of the invention is porous carrier material, and porous carrier material is except carrying powdered reaction agent, catalysis
Outside agent and N- octadecyl bi-quaternary ammonium salt, itself a large amount of hydroxyl and the capillary network being made of different pore size, PARA FORMALDEHYDE PRILLS(91,95)
There is certain suction-operated.Gaseous state under the absorption of the electrostatic attraction and carrier of N- octadecyl bi-quaternary ammonium salt, around plate
Formaldehyde is adsorbed in ball type carrier, is contacted with dicyandiamide and acetylurea, by addition reaction, generates dicyandiamide resin and water,
After hydrone is absorbed by auxiliary reactant, dicyandiamide resin is gradually deposited in carrier surface, removes via carrier adsorption, avoids
The secondary pollution of product.
When in use, it is brushed in artificial board furniture after being mixed by this product direct spraying or with oil-soluble film forming matter
On all positions brushed of wall (such as front and back sides of drawer inner cavity, wardrobe inner wall and backboard)；When furniture inner wall is exposed plate
(do not paste decoration panel and layered board and do not brush paint etc.) when, this product usage amount should be 40g/m2Left and right, when furniture inner wall
When facing processing, this product usage amount is just 20g/m2Left and right.
The beneficial effects of the present invention are:
1. gas of the present invention under the suction-operated of the electrostatic attraction and carrier of N- octadecyl bi-quaternary ammonium salt, around plate
State formaldehyde is adsorbed to ball type carrier or gathers ball type carrier surface, thus with powdered reaction agent dicyandiamide and catalyst acetyl
Urea contact generates dicyandiamide resin and water by addition reaction, after hydrone is absorbed by auxiliary reactant, dicyandiamide resin by
Gradually be deposited in carrier surface, removed via carrier adsorption, avoid the secondary pollution of product, and porosity ball type carrier with
Under the synergistic effect of catalyst, powdered reaction agent and N- octadecyl bi-quaternary ammonium salt, formaldehyde removing rate 5d can reach 98.5~
99.7%, and action time be up to 120 days, oil-soluble formaldehyde scavenger of the present invention can persistently, effectively remove artificial board
In the formaldehyde that releases.
2. the present invention uses N- octadecyl bi-quaternary ammonium salt, it is cationic surfactant, contains a large amount of amino, nothing
Poison is harmless, integrates two kinds of functions of formaldehyde catching and bleeding agent, has good capture formaldehyde performance and permeance property；Through it
The modified ball type carrier surface formed is hydrophobic structure, ball type carrier can be adhered to plate to artificial board internal penetration
Surface；Secondly amino is contained in its hydrophobic end, can capture the formaldehyde carbonyl of electronegativity, the formaldehyde overflowed from plate is taken to base
Near matter, play the role of formaldehyde catching agent.
3. catalyst acetyl urea has good catalytic activity, the amido energy of acetylurea to the formaldehyde containing electron-withdrawing group
Electronics pair is enough provided, carbonyl can receive proton, therefore have both the double properties of B alkali and L acid, activate substrate simultaneously in the reaction
Formaldehyde and nucleopilic reagent dicyandiamide improve reaction rate and formaldehyde are gone so that the addition reaction for being catalyzed aldehyde radical and amine quickly carries out
Except rate.
4. being stained with the ball type carrier of powdered reaction agent, there are enough porositys, formaldehyde can be allowed to enter easily, and reactant
Acetylurea is evenly distributed in gap, has reached the reasonable utilization in space, compared to simple coating membrane structure, is greatly increased
Response area, reaction efficiency greatly improve.
5. auxiliary reactant of the invention can absorb the moisture generated in reaction process, keeps reaction balance positive mobile, improve
Reaction efficiency, and reaction product dicyandiamide resin is promoted to form solid product, it is deposited in carrier surface, is inhaled convenient for ball type carrier
Attached removing；Next maintains the drying of plate, reduces and has even prevented the problem of urea-formaldehyde resin adhesive decomposes in case of wet.
6. formaldehyde scavenger of the invention is sprayed on plate surface, pass through the hydrophobic work of N- octadecyl bi-quaternary ammonium salt
With strengthening and the combination of plate, enhance stability, reduce the loss of formaldehyde scavenger, secondly, ball type carrier is layered on plate
Surface, formed a protective layer, and the electrostatic attraction of N- octadecyl bi-quaternary ammonium salt effect under, by formaldehyde be fixed on plate and
In space between ball type carrier, interior is diffused to from formaldehyde.
7. formaldehyde scavenger of the invention is in close contact by the hydrophobic effect and plate of N- octadecyl bi-quaternary ammonium salt, when
When needing replacing, it is only necessary to be wiped by the rag containing organic solvent, replacement is convenient.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
One, embodiment
Embodiment 1
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite, and particle size is 2.5 μm；The china clay glues
Native powder, diatomite are respectively 50 parts, 14 parts, 14 parts by mass；
The dicyandiamide powdered reaction agent with a thickness of 200nm.
Embodiment 2
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite, and particle size is 2.5 μm；The china clay glues
Native powder, diatomite are respectively 50 parts, 14 parts, 14 parts by mass；
The dicyandiamide powdered reaction agent with a thickness of 200nm.
Embodiment 3
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and dicyclohexylcarbodiimide, and particle size is
2.5μm；The china clay, clay powder, diatomite and dicyclohexylcarbodiimide additive amount be by mass respectively 50 parts, 14
Part, 14 parts and 25 parts；
The dicyandiamide powdered reaction agent with a thickness of 200nm.
Embodiment 4
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and anhydrous sodium sulfate, and particle size is 1.5 μm；
The china clay, clay powder, diatomite and anhydrous sodium sulfate additive amount be by mass respectively 20 parts, 10 parts, 10 parts and 20 parts；
The dicyandiamide powdered reaction agent with a thickness of 100nm.
Embodiment 5
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and anhydrous sodium sulfate, and particle size is 2 μm；Institute
The additive amount for stating china clay, clay powder, diatomite and anhydrous sodium sulfate is respectively 40 parts, 12 parts, 12 parts and 23 parts by mass；
The dicyandiamide powdered reaction agent with a thickness of 150nm.
Embodiment 6
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and dicyclohexylcarbodiimide, and particle size is
2.5μm；The china clay, clay powder, diatomite and dicyclohexylcarbodiimide additive amount be by mass respectively 50 parts, 14
Part, 14 parts and 25 parts；
The dicyandiamide powdered reaction agent with a thickness of 200nm.
Embodiment 7
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and phosphorus pentoxide, and particle size is 2 μm；Institute
The additive amount for stating china clay, clay powder, diatomite and phosphorus pentoxide is respectively 65 parts, 17 parts, 17 parts and 27 parts by mass；
The dicyandiamide powdered reaction agent with a thickness of 250nm.
Embodiment 8
A kind of oil-soluble formaldehyde scavenger including the ball type carrier being modified through the octadecyl bi-quaternary ammonium salt surface N- and glues
The dicyandiamide powdered reaction agent being attached on ball type carrier and catalyst acetyl urea；
Wherein ball type carrier is mixed by china clay, clay powder, diatomite and calcium oxide, and particle size is 3 μm；The porcelain
Soil, clay powder, diatomite and calcium oxide additive amount be by mass respectively 80 parts, 20 parts, 207 parts and 30 parts；
The dicyandiamide powdered reaction agent with a thickness of 300nm.
Any of the above-described embodiment oil-soluble formaldehyde scavenger the preparation method comprises the following steps:
Step 1 prepares ball type carrier
China clay is mixed in proportion with clay powder and diatomite, adds water to be granulated, obtains ball type carrier；Ball type carrier is dried in the air
Dry, 700-800 DEG C of 2~4h of calcining, cooling is dried, and is pulverized, and 5000~8000 mesh sieve are crossed, and collecting screenings is spherical shape
Carrier；Wherein, aforesaid operations are carried out after having the embodiment of auxiliary reactant, auxiliary reactant and raw material to be mixed together.
Step 2 prepares the ball type carrier of adhering powder reactant
S1, ball type carrier hydrofluoric acid solution is impregnated into 1~2h, then washes with water and dries；
S2, powdered reaction agent will be entered in conical flask, and the PTFE emulsion that mass concentration is 30~40% is added, stirring is equal
Obtained reactant slurries after even；
S3, ball type carrier is impregnated with step S2 reactant slurries, ultrasound 30min, fills under the ultrasonic power of 300w
Divide dispersing ball carrier；
The suspension of S4, filtration step S2, precipitating are dried under field conditions (factors)；
S5, after adhering to for the first time ball type carrier surface spray PTFE emulsion, this time PTFE emulsion concentration be 20~
30%, it is less than and adheres to PTFE emulsion concentration used for the first time, then room temperature dusty spray reactant；Ball after adhering to for the first time
The powdered reaction oxidant layer adhered on shape carrier surface is relatively thin, need to carry out second of adherency.Second of gluing is not directly by carrier
It is immersed in PTFE emulsion, the reactant adhered to for the first time can otherwise be lost, thus use spray pattern.Second of adherency
Afterwards, 99% area is all stained with powdered reaction agent on ball type carrier surface, and powdered reaction agent thickness is up to 100~30000nm,
Why second of adherency is carried out, is to have one layer of netted outer protection for the powdered reaction agent for guaranteeing adherency up, so
Afterwards, when being attached the ball type carrier of powdered reaction agent after drying, it is whole and again non-that external, internal PTFE will form one
Closing, can still retain the porous structure of ball type carrier.
S6, it will dry, retain stand-by under the ball type carrier natural conditions through adhering to for the second time.
Wherein, aforesaid operations are carried out after having the embodiment of catalyst, catalyst to mix with powdered reaction agent.
Step 3N- octadecyl bi-quaternary ammonium salt modified spherical carrier
N- octadecyl bi-quaternary ammonium salt is added in the toluene of 300mL, then N- is added in the ball type carrier of 50g step 2
In the toluene solution of octadecyl bi-quaternary ammonium salt, 90 DEG C of constant temperature stir 4h, filter after reaction, and obtained solid matter is true
It dries after empty pump filter to constant weight.
Two, experimental example
This experimental group is as follows:
Comparative example 1: it is without any processing, as blank control.
Comparative example 2: by 200g ball type carrier xylene soluble, then being equipped with Desmodur L75 curing agent, and stirring is pressed
40g/m2Amount film, spontaneously dry 7d after tested；Wherein ball type carrier is mixed by china clay, clay powder and diatomite and is made
At particle size is 2.5 μm；The additive amount of the china clay, clay powder and diatomite is respectively 50 parts, 14 parts and 14 by mass
Part.
Comparative example 3: it by the modified ball type carrier xylene soluble in the octadecyl bi-quaternary ammonium salt surface N-, then is equipped with
Desmodur L75 curing agent, stirring, by 40g/m2Amount film, spontaneously dry 7d after tested；Wherein ball type carrier by
China clay, clay powder and diatomite are mixed, and particle size is 2.5 μm；The additive amount of the china clay, clay powder and diatomite is pressed
Quality meter is respectively 50 parts, 14 parts and 14 parts.
Comparative example 4: it will be stained with the ball type carrier xylene soluble of dicyandiamide powdered reaction agent, then is equipped with Desmodur
L75 curing agent, stirring, by 40g/m2Amount film, spontaneously dry 7d after tested；Wherein, dicyandiamide powdered reaction agent
With a thickness of 200nm, ball type carrier is mixed by china clay, clay powder and diatomite, and particle size is 2.5 μm；The china clay glues
The additive amount of native powder and diatomite is respectively 50 parts, 14 parts and 14 parts by mass.
Comparative example 5: it will be stained with the ball type carrier xylene soluble of dicyandiamide powdered reaction agent, then is equipped with Desmodur
L75 curing agent, stirring, by 40g/m2Amount film, spontaneously dry 7d after tested；Wherein, dicyandiamide powdered reaction agent
With a thickness of 200nm, ball type carrier is mixed by china clay, clay powder, diatomite and dicyclohexylcarbodiimide, and particle size is
2.5μm；The china clay, clay powder, diatomite and dicyclohexylcarbodiimide additive amount be by mass respectively 50 parts, 14
Part, 14 parts and 25 parts.
Comparative example 6: will be stained with the ball type carrier xylene soluble of dicyandiamide powdered reaction agent and catalyst acetyl urea,
It is equipped with Desmodur L75 curing agent again, stirs, by 40g/m2Amount film, spontaneously dry 7d after tested；Wherein, double cyanogen
Amine powdered reaction agent with a thickness of 200nm, ball type carrier is mixed by china clay, clay powder and diatomite, particle size 2.5
μm；The additive amount of the china clay, clay powder and diatomite is respectively 50 parts, 14 parts and 14 parts by mass.
Test example
By the oil-soluble formaldehyde scavenger xylene soluble of the present embodiment 1~5, then it is equipped with Desmodur L75 solidification
Agent, stirring, by 40g/m2Amount film, spontaneously dry 7d after tested.
The purification efficiency and purification efficiency persistence measuring method of formaldehyde are referring to " function of purifying indoor air coating material is net
Change performance " JC/T1074-2008, entire experimental enviroment are as follows: temperature (25 ± 2) DEG C, relative humidity (40 ± 10) %, experimental result
It is shown in Table 1.
Using layered board (being purchased from the prosperous sharp wood industry of Shandong Linyi City, thickness 2.7mm, size 150mm × 167mm) as experiment
Oil-soluble formaldehyde scavenger of the invention is painted on Pola plate surface by the usage amount of 20g/m2, using drying by material
Method measures measurement first with " residential area Formaldehyde in Atmosphere health test method spectrophotometry " GB/T 16129-1995 method
Aldehyde, investigates its duration for removing free formaldehyde, and experimental result is shown in Table 2.
The purification efficiency and purification efficiency durability experiment of 1 formaldehyde of table
As shown in Table 1, during the test, the natural decay rate of formaldehyde is 13.35%, and experiment is set up, embodiment 4~8
Oil-soluble formaldehyde scavenger, including the modified ball type carrier in the octadecyl bi-quaternary ammonium salt surface N- and be adhered to ball type carrier
On dicyandiamide powdered reaction agent and catalyst acetyl urea, the ball type carrier also contain auxiliary reactant, be formaldehyde and dicyandiamide
Powdered reaction agent provides good reaction environment, and reaction compartment is big, and reactant concentration is high, and (N- octadecyl bi-quaternary ammonium salt is caught
The effect of catching) and reactivity it is high (activation of catalyst), the hydrone that secondary response generates is absorbed by auxiliary reactant, is promoted
It reacts and is carried out to the direction for generating dicyandiamide resin, reaction efficiency is high, and final dicyandiamide resin is gradually deposited in carrier surface, passes through
It is removed by carrier adsorption, avoids the secondary pollution of product, therefore formaldehyde removal efficiency is high, persistence is good.Embodiment 1 is compared
In embodiment 4~8, it is not added with auxiliary reactant and catalyst, formaldehyde activity is lower, and the moisture that secondary response generates cannot remove in time
It goes, the formation speed of dicyandiamide resin is caused to slow down, formaldehyde is eliminated efficiency and reduced；Embodiment 2 does not add compared to embodiment 4~8
Add auxiliary reactant, the moisture for reacting generation cannot remove in time, and causing formaldehyde to eliminate efficiency reduces, and persistence is slightly worse；Embodiment 3
Compared to embodiment 4~8, it is not added with catalyst, formaldehyde reactivity is lower, and reaction rate is caused to reduce；Comparative example 2 and comparison
Example 3, although ball type carrier provides enough adsorption spaces, adsorbance is limited, in persistence test, easily reaches absorption
Saturation state, therefore purifying formaldehyde efficiency persistence is poor, this be also existing formaldehyde adsorbent there are the problem of；Comparative example 3
Compared with comparative example 2, adsorption efficiency can be accelerated by N- octadecyl bi-quaternary ammonium salt surface, but the final adsorbance of formaldehyde is simultaneously
Do not increase, instead since N- octadecyl bi-quaternary ammonium salt occupies on the surface of ball type carrier, affects adsorption capacity；Comparative example 4
Using the ball type carrier of dicyandiamide powdered reaction agent, gaseous formaldehyde is adsorbed to ball type carrier, thus with the double cyanogen of powdered reaction agent
Amine contact, but it is modified to be not used N- octadecyl bi-quaternary ammonium salt, is also not added with auxiliary reactant and catalyst, formaldehyde essentially by
Ball type carrier is diffused into, adsorption efficiency is slow, and reactant concentration is low, and reactant activity is also low, and with the increase of product,
Back reaction rate is consequently increased, and causes reaction efficiency low, to influence the purification efficiency of formaldehyde；Comparative example 5 and comparative example 6 exist
On the basis of comparative example 4, increased separately auxiliary reactant and catalyst, can promote to a certain extent formaldehyde removal reaction into
Row, but comparative example 5 causes reactant concentration low since formaldehyde absorbing efficiency is slow, comparative example 6 since formaldehyde reactivity is low,
Therefore the two all synergy is unobvious.
The effect of 2 formaldehyde removing membrane removal free formaldehyde of table changes with time
As can be seen from Table 2, during lasting test, the content of the formaldehyde of comparative example 1 is fallen after rising, this is because
For removing residue formaldehyde in plate in sustained release, the amount of formaldehyde Natural Attenuation is lower than the amount of Form aldehyde release, therefore content of formaldehyde early period
It increases always, later period Form aldehyde release is more complete, part formaldehyde Natural Attenuation, therefore content of formaldehyde starts to reduce, and can also see
Formaldehyde has a longer deenergized period out, sprays the experimental group of oil-soluble formaldehyde scavenger of the present invention, and content of formaldehyde is persistently walked
Low, the 5th day, formaldehyde removing rate can reach 98.0~99.9%, and hereafter, as time went on, content of formaldehyde does not increase substantially,
It can be seen that oil-soluble formaldehyde scavenger of the present invention can persistently, effectively remove the formaldehyde released in artificial board.
Claims (8)
1. a kind of oil-soluble formaldehyde scavenger, which is characterized in that including ball type carrier and the double cyanogen being adhered on ball type carrier
Amine powdered reaction agent, the ball type carrier are modified through the octadecyl bi-quaternary ammonium salt surface N-.
2. oil-soluble formaldehyde scavenger as described in claim 1, which is characterized in that the thickness of the dicyandiamide powdered reaction agent
For 100~300nm.
3. oil-soluble formaldehyde scavenger as described in claim 1, which is characterized in that further include catalyst, the catalyst is
Acetylurea.
4. oil-soluble formaldehyde scavenger as described in claim 1, which is characterized in that the spherical carrier particle size is 1.5
~3 μm.
5. oil-soluble formaldehyde scavenger as described in claim 1, which is characterized in that the ball type carrier is by china clay, clay powder
It is mixed with diatomite.
6. oil-soluble formaldehyde scavenger as claimed in claim 7, which is characterized in that the china clay, clay powder and diatomite
Additive amount is respectively 20~80 parts, 10~20 parts, 10~20 parts by mass.
7. oil-soluble formaldehyde scavenger as claimed in claim 7, which is characterized in that further include auxiliary reaction in the ball type carrier
Agent, the auxiliary reactant are one of calcium oxide, phosphorus pentoxide, anhydrous sodium sulfate and DCC or a variety of.
8. oil-soluble formaldehyde scavenger as claimed in claim 9, which is characterized in that the additive amount of the auxiliary reactant presses quality
It is calculated as 20~30 parts.
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| CN201811213020.1A CN109092024A (en) | 2018-10-18 | 2018-10-18 | A kind of oil-soluble formaldehyde scavenger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213020.1A CN109092024A (en) | 2018-10-18 | 2018-10-18 | A kind of oil-soluble formaldehyde scavenger |
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| CN109092024A true CN109092024A (en) | 2018-12-28 |
Family
ID=64868935
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112337303A (en) * | 2020-11-20 | 2021-02-09 | 四川力洁狮环保科技有限公司 | Biodegradable formaldehyde scavenger |
-
2018
- 2018-10-18 CN CN201811213020.1A patent/CN109092024A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112337303A (en) * | 2020-11-20 | 2021-02-09 | 四川力洁狮环保科技有限公司 | Biodegradable formaldehyde scavenger |
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