CN103897567A - Wood lacquer for purifying formaldehyde and preparation method thereof - Google Patents
Wood lacquer for purifying formaldehyde and preparation method thereof Download PDFInfo
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- CN103897567A CN103897567A CN201410081298.3A CN201410081298A CN103897567A CN 103897567 A CN103897567 A CN 103897567A CN 201410081298 A CN201410081298 A CN 201410081298A CN 103897567 A CN103897567 A CN 103897567A
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Abstract
The invention discloses wood lacquer for purifying formaldehyde and a preparation method thereof. The wood lacquer is prepared by mixing a component A with a component B in a mass ratio of (1:0.25)-(1:0.5), and then stirring the mixture uniformly, wherein the component A is prepared by putting alkyd resin and alcohol solvents into a reaction kettle under the protection of nitrogen, stirring the materials uniformly and heating the materials to 50-75 DEG C, adding first diluents, fillers, driers, wax powder, formaldehyde removal agents and an anti-settling agent in sequence, continuing stirring, maintaining the temperature at 40-70 DEG C and reacting for 15-60 minutes, and discharging the material after returning to the room temperature; the component B is prepared by putting second diluents into the reaction kettle under the protection of nitrogen, stirring and insulating the materials, putting curing agents, a levelling agent and a defoaming agent into the reaction kettle, insulating and stirring the materials, and discharging the material after returning to the room temperature. The wood lacquer has high formaldehyde removal efficiency and good durability, dispenses with recoating films, and is convenient to use.
Description
Technical field
The present invention relates to a kind of wood lacquer, particularly relate to a kind of wood lacquer with removing effect of formaldehyde and preparation method thereof; Belong to air pollutant field of purification.
Background technology
Formaldehyde is the colourless toxic gas of inflammable, highly active pungency at normal temperatures.What human body was damaged mostly is ectogenic formaldehyde.Ectogenic formaldehyde can roughly be divided into two classes, and a class is while contacting with the mankind to be formaldehyde, and another kind of is while contacting with the mankind to be the material such as methyl alcohol, methylamine, the formaldehyde that after absorption of human body, institute's metabolism produces.Common formaldehyde source has: building and finishing material, as wooden boards (shaving board, core-board, glued board, medium density fibre board (MDF), lumber core etc.), plank tackiness agent, the finishing material (wallpaper etc.) that may distribute formaldehyde and ornaments (chemical fibre carpet etc.); Waste gas, as vehicle exhaust, the industrial gaseous waste of producing formaldehyde, kitchen fume, combustion exhaust etc.; Weaving and clothes, as in cloth, add formaldehyde as auxiliary agent with wrinkle resistant, fire-retardant, keep color and luster; Medical formaldehyde, preserves sample etc. as sterilizing agent sterilizing or as sanitas; Household chemical product, as makeup, sanitising agent etc. containing formaldehyde.The formaldehyde discharging in building materials and finishing material is topmost indoor formaldehyde source.Aminoresin (urea-formaldehyde resin adhesive, melamine resin adhesive) Yin Qiyi is dry, easily dilutable and be cheaply widely used as tackiness agent in the manufacture of wooden boards and wood furniture.Formaldehyde is the synthesis material of above-mentioned resin, but general production technology cannot 100% ground transform formaldehyde, this causes in product still some free formaldehyde.In high temperature, sour environment, can there are a series of reversible reactions with free formaldehyde in resin in the Mierocrystalline cellulose hydroxymethyl in tackiness agent.Under the existence of water, the C-N key in aminoresin is hydrolyzed, and discharges formaldehyde.In addition, other composition in Phenol aldehyde resin, shaving board, log for example can discharge formaldehyde when milled wood lignin quality acidic hydrolysis.
The high resolution of formaldehyde in water determined that it can be by human respiratory tract and the GI mucous membrane character of absorption fast.In human body, formaldehyde can be oxidized to formic acid, then breathes out with the form of carbonic acid gas, or is combined and stays in the body with bio-matrix.Formaldehyde is modal untoward reaction to the stimulation of eye, respiratory tract, is also the harm the most obvious to HUMAN HEALTH simultaneously.In addition, formaldehyde can also cause the skin problem such as allergic dermatitis, color spot, and severe patient can cause cutaneous necrosis.The toxicity of formaldehyde Endocrine system and reproductive system is verified in the experiment made on the living of rat and mouse.Formaldehyde also shows as neurotoxicity and Cardiovascular Toxicity to the harm of human body.Formaldehyde can react with protein molecule and make its sex change, and therefore formalin is often used as sanitas.But also just because of this reason, formaldehyde can cause human body cell to morph.Formaldehyde-caused DNA damage is its genotoxic embodiment.In recent years, pregnant woman is because causing the news of fetal anomaly to be also often in the news in the environment of formaldehyde for a long time.It is worth noting, European Union classifies formaldehyde as doubtful carcinogens as; Nineteen ninety-five international cancer research institution (IARC) is decided to be doubtful carcinogens formaldehyde, but to IARC in 2004 formaldehyde is promoted to human carcinogen's thing (class).
Just because of formaldehyde is so serious to the harm of human body, administer the airborne formaldehyde of indoor environment, especially family very urgent.
The means of purifying formaldehyde have multiple, but respectively have quality.Physical method, as utilize gac PARA FORMALDEHYDE PRILLS(91,95) to adsorb (Zheng Jingtang etc., CN1386577), although aldehydes removal successful while beginning, rapidly, adsorptive capacity is large, but poor, the easy desorption of persistence, the gac of must throwing aside after use for some time is also again bought and is settled, and has increased like this aldehydes removal cost.Biodegradation method, as utilize rhizosphere absorption, the microbial metabolism etc. of plant, although there is certain effect, but about the mechanism of biopurification formaldehyde is still not clear, plant absorbs the problem that receptivity declines after pollutent and is not also still effectively solved, therefore biological clean aldehyde method be not suitable for promoting.
Newly-decorated indoor environment often concentration of formaldehyde exceeds standard, and this is due to finishing material Diazolidinyl Ureas such as shaving board, chemical fibre carpet, wallpapers inferior.And when finishing, people often need to use wood lacquer and are coated on wooden boards, are in order to protect furniture on the one hand, and waterproof mildew-resistant anti-scratch, is for decorative effect on the other hand.Therefore, if fit up wood lacquer used and can have the ability of efficient aldehydes removal, can be by purifying formaldehyde in the time of finishing; its concentration is reduced greatly, so not only can reach aldehydes removal object, protected HUMAN HEALTH; also simultaneously because buying in addition aldehydes removal equipment, and reduced decoration cost.Occurred being on the market known as the coating with aldehydes removal effect, but the cleaning principle of PARA FORMALDEHYDE PRILLS(91,95) is different, effect is also uneven
Although utilize the effect of nano catalytic material degradation of formaldehyde to be confirmed in laboratory, but be that nanoparticle is easily reunited on the one hand, weaken catalytic effect, be when Material Addition is in coating time on the other hand, if addition is larger, likely affect the light transmission of paint film, so the nano-photo catalytic materials such as single utilization nano titanium oxide are as the coating of aldehydes removal material, mainly take solid color enamel (Huang Hongting, CN101831223A) and interior wall coating (Dong Wendou, CN102051123A) as main.Utilize photocatalyst material purifying formaldehyde to also have place's deficiency, be exactly that to form the condition of electron hole with oxidisability be the irradiation that has UV-light to nano titanium oxide, even if also comprise UV-light in natural light, but indoor light is also inadequate, and ultraviolet long-term irradiation has adverse influence to human body, furniture, therefore the promoting the use of of wood lacquer of, utilizing the photocatalyst materials such as nano titanium oxide to carry out aldehydes removal is also worth discussion.
Some water miscible aldehydes removal materials, as utilize reactive hydrogen and formaldehyde reaction (as: Yuan Minglong etc., the CN1463753A on hydrazides; Wu Jiping, CN1457045A), although rapid, complete with formaldehyde reaction in aqueous phase system, but in solvent-based system, especially be that isocyanate curing agent can react rapidly with this class active hydrogen substance when having used in the coating system of isocyanate curing agent, not only consumed except aldehyde group, also make curing speed too fast, be difficult to good filming.Moreover although water-miscible paint is pursued with characteristics such as its low VOC, environmental protection, and its solid content is low, paint film property is relatively poor etc., inferior position makes water-borne coatings be difficult to promote in China market, also makes the popularization of water-based aldehydes removal coating be obstructed.
Some spray class or volatile aldehydes removal material, as hypo solution, camphor familial plant extract (Peng Changrong, CN1431258A), the material that needs a person with the qualifications of a general when use is dispersed in room air, will certainly make like this to rest on operator's suction part aldehydes removal material in this space, and whether these materials there is disadvantageous effect it be unclear that to human body simultaneously.
Summary of the invention
The object of the invention is for the above-mentioned deficiency except formaldehyde materials, provide that a kind of aldehydes removal efficiency is high, decontamination effect improving lastingly, does not produce secondary pollution, not containing wood lacquer of the purifying formaldehyde of heavy metal composition, non-toxic and safe and preparation method thereof.
The moment of dipole of formaldehyde is 7.57 × 10
?30cm, the carbonyl in formaldehyde is a unsaturated group, Sauerstoffatom band portion negative charge, has nucleophilicity, is easy to react with electrophilic reagent.The material that contains amido has reactive hydrogen, can with formaldehyde generation nucleophilic addition, can there is this reaction in amino acids, hydrazide kind compound, amides, aminated compounds etc.
Primary amine is as follows with reacting of formaldehyde:
Secondary amine is as follows with reacting of formaldehyde:
Except nitrogen-containing group and formaldehyde reaction, contain active methylene group β ?dihydroxyl material also can react with formaldehyde, as follows:
Visible, formaldehyde and amido substance reaction generate hydramine, N ?substituted imine or enamine and water, Er β ?the by product that reacts of dihydroxyl material and formaldehyde be also water, product is nontoxic, aldehydes removal highly effective and safe.Water can be directly released in environment, to human body, environmentally friendly; And in the time that the molecular weight of main chain R is enough large, hydramine, N ?substituted imine or enamine are not volatile, still remain in the middle of coating system, can not be released in the middle of environment.Therefore, the effectively purifying formaldehyde of purifying formaldehyde Synolac that utilizes above-mentioned amido material to prepare with reacting of formaldehyde, and can not cause secondary pollution to environment.In view of hydrazides, uncle amine substance and isocyanate curing agent can react rapidly, therefore the present invention select low with isocyanate curing agent reactivity, and the high amido material of formaldehyde reaction rate as main de-aldehyde agent, as 2 ?imidazolidones, barbituric acid.In addition, the aldehydes matters such as tea-polyphenol, Phloroglucinol also have certain aldehydes removal effect, and after adding, can provide the H+ of some amount so that secondary amine and formaldehyde reaction.
The present invention will reach aldehydes removal effect, and key is that de-aldehyde agent is dispersed in wood lacquer system, and is positioned at extexine, and this formula to system has very high requirement.The present invention selects Synolac as main body filmogen, selects the material that contains amido as de-aldehyde agent, and reasonable selection alcoholic solvent, thinner, weighting agent, wax powder, siccative and anti-settling agent, jointly as a component; Simultaneously using solidifying agent, flow agent and defoamer and partial solvent as another component, two kinds of composite uses of combination have realized above-mentioned purpose, make de-aldehyde agent uniform fold on woodenware surface, increase the contact area with room air, thereby increase the effective collision with formaldehyde molecule, improve aldehydes removal efficiency, detected result show aldehydes removal rate reach 88% or more than.And the wood lacquer of this formula do not affect the performance of wood lacquer because of de-aldehyde agent, reasonable disposition of the present invention, the wood lacquer of gained purifying formaldehyde is excellent combination property aspect the outward appearance of stability in storage, paint film and the resistance to acids and bases of paint film.It should be noted that, in de-aldehyde agent used in the present invention and wood lacquer, other auxiliary agents interact, can improve the effect of auxiliary agent, as Chao branching Ju Xian An ?the special space steric hindrance structure of the amine function of can playing stably, stop the reunion of the nanoparticles such as nano titanium oxide, nano silicon, guarantee the aspect excellent performances such as wood lacquer stability of the present invention, tensile strength, scratch resistant performance and water resistance.
For achieving the above object, the present invention is achieved in that
A wood lacquer for purifying formaldehyde, is characterized in that, the component A that the wood lacquer of this purifying formaldehyde is 1:0.25～1:0.5 by mass ratio and B component stir and make after mixing;
In mass fraction, described component A composition of raw materials consists of:
In mass fraction, the composition of raw materials of described B component consists of:
Described Synolac is YTM3380A synthetic fat acid resin, YTM3680 synthetic fat acid resin, YTM3280 synthetic fat acid resin, YTM3170 cocinic acid modification short-oil alkyd, the fatty acid modified quick-drying alkide resin of YTM3970, the fatty acid modified quick-drying alkide resin of YTM5102 ?70, the fatty acid modified quick-drying alkide resin of YTM1129 or the fatty acid modified quick-drying alkide resin of YTM1270B, and above-mentioned each Synolac is all sent out coating company limited from Shenzhen Chang Run and bought;
Described de-aldehyde agent be urea, Ju Xian An ?amine, Chao branching Ju Xian An ?amine, 2 ?one or more in imidazolidone, barbituric acid, Phloroglucinol, methyl ethyl diketone, methyl aceto acetate, Michaelis acid, Terpineol 350, NVP-XAA 723, tannin and trimeric cyanamide;
Described alcoholic solvent be methyl alcohol, ethanol, ethylene glycol, Diethylene Glycol, n-propyl alcohol, Virahol, 1,2 ?propylene glycol, 1,3 ?propylene glycol, glycerine, propyl carbinol, 1,3 ?butyleneglycol, 1,4 ?one or more in butyleneglycol;
Described weighting agent is one or more in organobentonite, Zinic stearas, talcum powder, aerosil, nano titanium oxide, nano-aluminium oxide, ultra-fine calcium phosphate powder, diatomite, nano phase ag_2 o;
Described siccative is cerium naphthenate, calcium naphthenate, zinc naphthenate, manganese naphthenate, lanthanum naphthenate, dibutyl tin laurate, zirconium iso-octoate, isocaprylic acid cerium, isocaprylic acid lanthanum, 1,10 ?phenanthroline, 2,2 ’ ?one or more in dipyridyl and trioctyl-phosphine oxide;
Described wax powder is one or more in polyethylene wax micro mist, oxidized polyethlene wax micro mist, polyamide wax micropowder, Poly Propylene Wax micro mist, clorafin micro mist, tetrafluoroethylene wax micro mist, carnauba wax micro mist, sand streak wax powder;
Described anti-settling agent be ultra-fine polyolefin-wax, polyamide wax, organobentonite, aerosil, modification polyureas N ?methyl-2-pyrrolidone or acid amides modified castor oil;
The first described thinner and the second thinner are all one or more in ethyl acetate, n-propyl acetate, n-butyl acetate, pentyl acetate, hexanaphthene, pimelinketone, ether and butyl ether;
The preparation of described component A: under nitrogen protection, drop into Synolac and alcoholic solvent in reactor, stir, be heated to 50 ℃～75 ℃; Add successively the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent, continue to stir, keep 40～70 ℃ of reactions of temperature 15～60 minutes; Return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place;
The preparation of described B component: under nitrogen protection, drop into the second thinner in reactor, stirring at low speed (100～200rpm) 3～5 minutes, maintains the temperature at 20～40 ℃; Keeping, under the state of stirring at low speed (100～200rpm), dropping into solidifying agent, flow agent, defoamer in reactor, maintain the temperature at 20～30 ℃, to stir 3～5 minutes, discharging after returning to room temperature, obtains B component, and sealing is kept in Dark Place in cool place place.
Preferably, described solidifying agent be toluene diisocyanate trimer (TDI tripolymer), diphenylmethanediisocyanate tripolymer (MDI tripolymer), 1,6 ?one or more in hexamethylene diisocyanate tripolymer (HDI tripolymer), isophorone diisocyanate trimer (IPDI tripolymer) and dicyclohexyl methane diisocyanate (HMDI tripolymer).
Described flow agent be heat resistant type flow agent EL ?2829, scold water type flow agent EL ?2827, fluorin modified crylic acid class flow agent EL ?2825, polyether-modified polydimethylsiloxane flow agent EL ?2824, modified acrylic acid flow agent EL ?2820 or organosilicon surface modifier EL ?2813.
Described defoamer is organic silicone
organic silicone
modified silicone
or fluorine-containing broken bubble polymers soln
Described organobentonite, Zinic stearas, talcum powder, ultra-fine calcium phosphate powder diatomite granularity are greater than 200 orders; Described aerosil, nano titanium oxide, nano-aluminium oxide, nano phase ag_2 o particle diameter are less than 50nm.
The preparation method of the wood lacquer of described purifying formaldehyde, comprises the steps:
1) preparation of component A: under nitrogen protection, add Synolac and alcoholic solvent by formula rate in reactor, stir, be heated to 50 ℃～75 ℃; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent by formula rate successively, continue to stir, keep 40～70 ℃ of reactions of temperature 15～60 minutes; Return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place;
2) preparation of B component: under nitrogen protection, drop into the second thinner in reactor, 100～200rpm stirring at low speed 3～5 minutes, maintains the temperature at 20～40 ℃; Keeping, under the state of stirring at low speed, dropping into solidifying agent, flow agent, defoamer in reactor, control temperature at 20～30 ℃, to stir 3～5 minutes, discharging after returning to room temperature, obtains B component, and sealing is kept in Dark Place in cool place place;
3) take component A and the B component that mass ratio is 1:0.25～1:0.5, after mixing, stir, leave standstill after 10～15 minutes, be purified the wood lacquer of formaldehyde.
The thinner that the wood lacquer of purifying formaldehyde of the present invention uses is ester class or ether solvent, not containing aromatic solvents such as benzene,toluene,xylenes.Ester class, ether solvent be low than aromatic solvent toxicity, little to harm, than other solvent-borne type wood lacquers are safer in the use on the market.
The step of the wood lacquer preparation process of purifying formaldehyde of the present invention is few, and operation is mainly to control temperature and liquid agitation, and technical process is simple, and number of devices is few; In preparation process, needed temperature is within 20～75 ℃, and to pressure no requirement (NR), therefore low to plant and instrument requirement, general conventional containers and paint production plant all can reach this requirement, are applicable to industrialization volume production.
The wood lacquer aldehydes removal efficiency of purifying formaldehyde of the present invention is high, persistence good, do not produce secondary pollutant, greatly reduces the aldehydes removal cost of family's indoor environment.
Compared with prior art, the present invention has following outstanding effect:
1) the wood lacquer aldehydes removal efficiency of purifying formaldehyde of the present invention is high, persistence good;
2) wood lacquer of purifying formaldehyde of the present invention does not need to throw aside after aldehydes removal end of processing, does not need film again, easy to use;
3) water white transparency after the wood lacquer film forming of purifying formaldehyde of the present invention, smooth smooth, do not affect texture, the color and luster on woodenware surface, and coated woodenware is had to good defencive function, is applicable to finishing places such as family, office, school;
4), after the wood lacquer and formaldehyde reaction of purifying formaldehyde of the present invention, the product of generation is not had a volatility, does not produce secondary pollution;
5) solvent using in the wood lacquer preparation process of purifying formaldehyde of the present invention is ester class, ethers, not containing aromatic solvents such as benzene,toluene,xylenes, also not containing heavy metal elements such as chromium, lead, mercury, toxicity is low, than other wood lacquers are safer in the use on the market;
6) the wood lacquer technical process of purifying formaldehyde of the present invention is simple, low to production unit requirement, is applicable to industrialization volume production.
After tested, the wood lacquer of purifying formaldehyde of the present invention has excellent purifying formaldehyde performance and decontamination effect improving persistence, uses the present invention to carry out purifying formaldehyde and can obtain good result.Reduce the formaldehyde in room air, have obvious help to alleviating respiratory tract, Ocular irritation, skin irritation, have positive effect to reducing cardiovascular disorder, fetal anomaly, cancer incidence.
Embodiment
Below in conjunction with embodiment, the invention will be further described, it should be noted that, embodiment does not form the restriction to the claimed scope of the present invention.
Embodiment 1
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, to dropping in proportion the fatty acid modified quick-drying alkide resin of YTM3970 and ethanol, ethylene glycol in reactor, stir, be heated to 75 ℃;
2) add successively n-butyl acetate, pimelinketone, organobentonite, aerosil, nano-aluminium oxide, dibutyl tin laurate, polyethylene wax micro mist, clorafin micro mist, Phloroglucinol, Chao branching Ju Xian An ?amine, continue to stir, keep temperature 70 C to react 15 minutes so that react completely;
3) return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place.
The preparation of B component:
Preparation process: 1) under nitrogen protection, drop into n-butyl acetate and pimelinketone in reactor, stirring at low speed (100rpm) 5 minutes, maintains the temperature at 40 ℃; 2) keeping under the state of stirring at low speed (100rpm), to drop in reactor toluene diisocyanate trimer, organosilicon surface modifier EL ?2813, modified silicone
maintain the temperature at 30 ℃, stir 5 minutes; 3) return to discharging after room temperature, obtain B component, sealing is kept in Dark Place in cool place place.
Take component A and B component that mass ratio is 1:0.25, after mixing, stir, leave standstill after 10 minutes, be purified the wood lacquer of formaldehyde.
Embodiment 2
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, to dropping in proportion YTM3680 synthetic fat acid resin and methyl alcohol, ethanol in reactor, stir, be heated to 50 ℃;
2) add successively n-butyl acetate, ethyl acetate, organobentonite, aerosil, nano-aluminium oxide, Zinic stearas, dibutyl tin laurate, calcium naphthenate, polyethylene wax micro mist, clorafin micro mist, urea, 2 ?imidazolidone, barbituric acid, methyl ethyl diketone, Phloroglucinol, Terpineol 350, continue to stir, keep 40 ℃ of temperature to react 60 minutes so that react completely;
3) return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place.
The preparation of B component:
Preparation process: 1) under nitrogen protection, drop into n-butyl acetate and butyl ether in reactor, stirring at low speed (200rpm) 3 minutes, maintains the temperature at 20 ℃; 2) keeping under the state of stirring at low speed (200rpm), to drop in reactor 1,6 ?hexamethylene diisocyanate tripolymer, diphenylmethanediisocyanate, polyether-modified polydimethylsiloxane flow agent EL ?2824, organic silicone
maintain the temperature at 20 ℃, stir 3 minutes; 3) return to discharging after room temperature, obtain B component, sealing is kept in Dark Place in cool place place.
Take component A and B component that mass ratio is 1:0.5, after mixing, stir, leave standstill after 15 minutes, be purified the wood lacquer of formaldehyde.
Embodiment 3
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, to drop in proportion in reactor YTM3170 cocinic acid modification short-oil alkyd and methyl alcohol, ethanol, 1,4 ?butyleneglycol, stir, be heated to 62.5 ℃;
2) add successively n-butyl acetate, ethyl acetate, organobentonite, talcum powder, nano-aluminium oxide, Zinic stearas, dibutyl tin laurate, zinc naphthenate, oxidized polyethlene wax micro mist, clorafin micro mist, Ju Xian An ?amine, 2 ?imidazolidone, Phloroglucinol, acid amides modified castor oil, continue to stir, keep 55 ℃ of temperature to react 37.5 minutes so that react completely;
3) return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place.
The preparation of B component:
Preparation process: 1) under nitrogen protection, drop into n-butyl acetate and ether in reactor, stirring at low speed (150rpm) 4 minutes, maintains the temperature at 30 ℃; 2) keeping under the state of stirring at low speed (150rpm), to drop in reactor 1,6 ?hexamethylene diisocyanate tripolymer, polyether-modified polydimethylsiloxane flow agent EL ?2824, fluorine-containing broken bubble polymers soln
maintain the temperature at 25 ℃, stir 4 minutes; 3) return to discharging after room temperature, obtain B component, sealing is kept in Dark Place in cool place place.
Take component A and B component that mass ratio is 1:0.37, after mixing, stir, leave standstill after 12.5 minutes, be purified the wood lacquer of formaldehyde.
Embodiment 4
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, to dropping in proportion YTM3380A synthetic fat acid resin and ethanol, n-propyl alcohol, 1,3 ?propylene glycol in reactor, stir, be heated to 65 ℃;
2) add successively n-butyl acetate, ethyl acetate, organobentonite, talcum powder, nano titanium oxide, aerosil, nano-aluminium oxide, Zinic stearas, dibutyl tin laurate, oxidized polyethlene wax micro mist, clorafin micro mist, NVP-XAA 723,2 ?imidazolidone, trimeric cyanamide, continue to stir, keep 65 ℃ of temperature to react 30 minutes so that react completely;
3) return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place.
The preparation of B component:
Preparation process: 1) under nitrogen protection, drop into n-butyl acetate and ethyl acetate in reactor, stirring at low speed (150rpm) 4 minutes, maintains the temperature at 25 ℃; 2) keeping under the state of stirring at low speed (150rpm), to dropping into toluene diisocyanate trimer in reactor, scold water type flow agent EL ?2827, modified silicone
maintain the temperature at 25 ℃, stir 5 minutes; 3) return to discharging after room temperature, obtain B component, sealing is kept in Dark Place in cool place place.
Take component A and B component that mass ratio is 1:0.45, after mixing, stir, leave standstill after 15 minutes, be purified the wood lacquer of formaldehyde.
Embodiment 5
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, to drop in proportion in reactor YTM5102 ?70 fatty acid modified quick-drying alkide resins and methyl alcohol, ethanol, propyl carbinol, 1,3 ?propylene glycol, stir, be heated to 60 ℃;
2) add successively n-butyl acetate, ethyl acetate, ether, organobentonite, diatomite, talcum powder, nano titanium oxide, aerosil, nano-aluminium oxide, Zinic stearas, dibutyl tin laurate, trioctyl-phosphine oxide, Poly Propylene Wax micro mist, clorafin micro mist, Michaelis acid, urea, methyl aceto acetate, Phloroglucinol, modification polyureas N ?methyl-2-pyrrolidone, continue to stir, keep 55 ℃ of temperature to react 30 minutes so that react completely;
3) return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place.
The preparation of B component:
Preparation process: 1) under nitrogen protection, drop into n-butyl acetate and ethyl acetate in reactor, stirring at low speed (150rpm) 5 minutes, maintains the temperature at 25 ℃; 2) keeping under the state of stirring at low speed (150rpm), to drop in reactor toluene diisocyanate trimer, isophorone diisocyanate trimer, polyether-modified polydimethylsiloxane flow agent EL ?2824, polyether-modified polydimethylsiloxane flow agent EL ?2824, maintain the temperature at 25 ℃, stir 5 minutes; 3) return to discharging after room temperature, obtain B component, sealing is kept in Dark Place in cool place place.
Take component A and B component that mass ratio is 1:0.4, after mixing, stir, leave standstill after 15 minutes, be purified the wood lacquer of formaldehyde.
Water white transparency after the wood lacquer film forming of the purifying formaldehyde that above-described embodiment 1～5 makes, coating surface are smooth, do not affect texture, the color and luster on woodenware surface.The product of above-described embodiment 1～5 is carried out to performance test.According to following standard, the wood lacquer of prepared purifying formaldehyde is made a service test:
By GB18581 ?2009 measure objectionable impurities in wood lacquer, its limitation is benzene content≤0.3%, toluene, dimethylbenzene, ethylbenzene total content≤5%, halohydrocarbon content≤0.1%, lead≤90mg/kg, cadmium≤75mg/kg, mercury≤60mg/kg, chromium≤60mg/kg;
By GB/T10247 ?2008 stability in storagies of measuring wood lacquer;
By GB9274 ?1988 resistance to acids and basess of measuring paint film;
By JC/T1074 ?the 2008 purifying formaldehyde performances of measuring paint film, wherein purifying formaldehyde performance >=75% be I class, >=80% be II class, decontamination effect improving persistence >=60% is I class, >=65% is II class.
Obtain test-results as shown in table 1:
Table 1 purifying formaldehyde Synolac product performance test-results
The data declaration of table 1: the stability in storage of the wood lacquer of purifying formaldehyde of the present invention is good; The content of objectionable impurities all GB18581 ?within 2009 claimed range, illustrate that this wood lacquer has enough safety in utilization; Paint film water white transparency, smooth smooth, resistance to acids and bases is good, illustrates that this wood lacquer does not affect the texture on woodenware surface, color and luster, and coated woodenware is had to good defencive function, is applicable to finishing places such as family, office, school; The purifying property of PARA FORMALDEHYDE PRILLS(91,95) and decontamination effect improving persistence all meet JC/T1074 ?2008 requirement, clean aldehyde excellent is described, the free formaldehyde in can purifying air rapidly, efficiently, enduringly.
The thinner using in the wood lacquer preparation process of the purifying formaldehyde of above-described embodiment 1～5 is ester class or ether solvent, not containing aromatic solvents such as benzene, toluene.Ester class, ether solvent are than the aromatic solvent such as benzene, toluene, and toxicity is low, little to harm, than other wood lacquer is safer in the use on the market.
The step of the wood lacquer preparation process of the purifying formaldehyde of above-described embodiment 1～5 is few, and operation is mainly to control temperature and liquid agitation, and technical process is simple, and number of devices is few; In preparation process, needed temperature is within 20～75 ℃, and to pressure no requirement (NR), therefore low to plant and instrument requirement, general conventional containers and production of resins equipment all can reach this requirement, are applicable to industrialization volume production.
Claims (6)
1. a wood lacquer for purifying formaldehyde, is characterized in that, the component A that the wood lacquer of this purifying formaldehyde is 1:0.25～1:0.5 by mass ratio and B component stir and make after mixing;
In mass fraction, described component A composition of raw materials consists of:
In mass fraction, the composition of raw materials of described B component consists of:
Described Synolac is YTM3380A synthetic fat acid resin, YTM3680 synthetic fat acid resin, YTM3280 synthetic fat acid resin, YTM3170 cocinic acid modification short-oil alkyd, the fatty acid modified quick-drying alkide resin of YTM3970, the fatty acid modified quick-drying alkide resin of YTM5102 ?70, the fatty acid modified quick-drying alkide resin of YTM1129 or the fatty acid modified quick-drying alkide resin of YTM1270B;
Described de-aldehyde agent be urea, Ju Xian An ?amine, Chao branching Ju Xian An ?amine, 2 ?one or more in imidazolidone, barbituric acid, Phloroglucinol, methyl ethyl diketone, methyl aceto acetate, Michaelis acid, Terpineol 350, NVP-XAA 723, tannin and trimeric cyanamide;
Described alcoholic solvent be methyl alcohol, ethanol, ethylene glycol, Diethylene Glycol, n-propyl alcohol, Virahol, 1,2 ?propylene glycol, 1,3 ?propylene glycol, glycerine, propyl carbinol, 1,3 ?butyleneglycol, 1,4 ?one or more in butyleneglycol;
Described weighting agent is one or more in organobentonite, Zinic stearas, talcum powder, aerosil, nano titanium oxide, nano-aluminium oxide, ultra-fine calcium phosphate powder, diatomite, nano phase ag_2 o;
Described siccative is cerium naphthenate, calcium naphthenate, zinc naphthenate, manganese naphthenate, lanthanum naphthenate, dibutyl tin laurate, zirconium iso-octoate, isocaprylic acid cerium, isocaprylic acid lanthanum, 1,10 ?phenanthroline, 2,2 ’ ?one or more in dipyridyl and trioctyl-phosphine oxide;
Described wax powder is one or more in polyethylene wax micro mist, oxidized polyethlene wax micro mist, polyamide wax micropowder, Poly Propylene Wax micro mist, clorafin micro mist, tetrafluoroethylene wax micro mist, carnauba wax micro mist, sand streak wax powder;
Described anti-settling agent be ultra-fine polyolefin-wax, polyamide wax, organobentonite, aerosil, modification polyureas N ?methyl-2-pyrrolidone or acid amides modified castor oil;
The first described thinner and the second thinner are all one or more in ethyl acetate, n-propyl acetate, n-butyl acetate, pentyl acetate, hexanaphthene, pimelinketone, ether and butyl ether;
The preparation of described component A: under nitrogen protection, drop into Synolac and alcoholic solvent in reactor, stir, be heated to 50 ℃～75 ℃; Add successively the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent, continue to stir, keep 40～70 ℃ of reactions of temperature 15～60 minutes; Return to discharging after room temperature, obtain component A;
The preparation of described B component: under nitrogen protection, drop into the second thinner in reactor, stirring at low speed 3～5 minutes, maintains the temperature at 20～40 ℃; Keeping, under the state of stirring at low speed, dropping into solidifying agent, flow agent, defoamer in reactor, maintain the temperature at 20～30 ℃, to stir 3～5 minutes, discharging after returning to room temperature, obtains B component.
2. the wood lacquer of purifying formaldehyde according to claim 1, it is characterized in that, described solidifying agent be toluene diisocyanate trimer, diphenylmethanediisocyanate tripolymer, 1,6 ?one or more in hexamethylene diisocyanate tripolymer, isophorone diisocyanate trimer and dicyclohexyl methane diisocyanate.
3. the wood lacquer of purifying formaldehyde according to claim 1, it is characterized in that, described flow agent be heat resistant type flow agent EL ?2829, scold water type flow agent EL ?2827, fluorin modified crylic acid class flow agent EL ?2825, polyether-modified polydimethylsiloxane flow agent EL ?2824, modified acrylic acid flow agent EL ?2820 or organosilicon surface modifier EL ?2813.
4. the wood lacquer of purifying formaldehyde according to claim 1, is characterized in that, described defoamer is organic silicone
organic silicone
modified silicone
or fluorine-containing broken bubble polymers soln
5. the wood lacquer of purifying formaldehyde according to claim 1, is characterized in that, described organobentonite, Zinic stearas, talcum powder, ultra-fine calcium phosphate powder diatomite granularity are greater than 200 orders; Described aerosil, nano titanium oxide, nano-aluminium oxide, nano phase ag_2 o particle diameter are less than 50nm.
Claim 1 ?the preparation method of wood lacquer of purifying formaldehyde described in 5 any one, it is characterized in that, comprise the steps:
1) preparation of component A: under nitrogen protection, add Synolac and alcoholic solvent by formula rate in reactor, stir, be heated to 50 ℃～75 ℃; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent by formula rate successively, continue to stir, keep 40～70 ℃ of reactions of temperature 15～60 minutes; Return to discharging after room temperature, obtain component A, sealing is kept in Dark Place in cool place place;
2) preparation of B component: under nitrogen protection, drop into the second thinner in reactor, 100～200rpm stirring at low speed 3～5 minutes, maintains the temperature at 20～40 ℃; Keeping, under the state of stirring at low speed, dropping into solidifying agent, flow agent, defoamer in reactor, control temperature at 20～30 ℃, to stir 3～5 minutes, discharging after returning to room temperature, obtains B component, and sealing is kept in Dark Place in cool place place;
3) take component A and the B component that mass ratio is 1:0.25～1:0.5, after mixing, stir, leave standstill after 10～15 minutes, be purified the wood lacquer of formaldehyde.
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