CN103897567B - Wood lacquer of a kind of purifying formaldehyde and preparation method thereof - Google Patents
Wood lacquer of a kind of purifying formaldehyde and preparation method thereof Download PDFInfo
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- CN103897567B CN103897567B CN201410081298.3A CN201410081298A CN103897567B CN 103897567 B CN103897567 B CN 103897567B CN 201410081298 A CN201410081298 A CN 201410081298A CN 103897567 B CN103897567 B CN 103897567B
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Abstract
The invention discloses wood lacquer of a kind of purifying formaldehyde and preparation method thereof.The wood lacquer of this purifying formaldehyde by mass ratio be stir after the component A of 1:0.25 ~ 1:0.5 and B component mix obtained; The preparation of component A: under nitrogen protection, drops into Synolac and alcoholic solvent, stirs in reactor, is heated to 50 DEG C ~ 75 DEG C; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent successively, continue to stir, keep temperature 40 ~ 70 DEG C reaction 15 ~ 60 minutes; Return to discharging after room temperature, obtain component A; The preparation of B component: under nitrogen protection, drops into the second thinner in reactor, stirs, insulation; In reactor, drop into solidifying agent, flow agent, defoamer, insulation, stir, to be restored to discharging after room temperature, obtain B component.The wood lacquer aldehydes removal efficiency of purifying formaldehyde of the present invention is high, persistence good, do not need film again, easy to use.
Description
Technical field
The present invention relates to a kind of wood lacquer, particularly relate to and a kind of there is the wood lacquer and preparation method thereof removing effect of formaldehyde; Belong to air pollutant field of purification.
Background technology
Formaldehyde is the colourless toxic gas of inflammable, highly active pungency at normal temperatures.What damage human body mostly is ectogenic formaldehyde.Ectogenic formaldehyde can be roughly divided into two classes, and a class is and be formaldehyde during human contact, another kind of, is and be the material such as methyl alcohol, methylamine during human contact, the formaldehyde that after absorption of human body, institute's metabolism produces.Common formaldehyde source has: building and finishing material, as finishing material (wallpaper etc.) and the ornaments (chemical fibre carpet etc.) of wooden boards (shaving board, core-board, glued board, medium density fibre board (MDF), lumber core etc.), plank tackiness agent, possibility emitting formaldehyde; Waste gas, as vehicle exhaust, the industrial gaseous waste, kitchen fume, combustion exhaust etc. of producing formaldehyde; Weaving and clothes, as added formaldehyde as auxiliary agent with wrinkle resistant, fire-retardant, maintenance color and luster in cloth; Medical formaldehyde, preserves sample etc. as sterilizing agent sterilizing or as sanitas; Household chemical product, as makeup, sanitising agent etc. containing formaldehyde.The formaldehyde discharged in building materials and finishing material is that topmost indoor formaldehyde is originated.Yin Qiyi does aminoresin (urea-formaldehyde resin adhesive, melamine resin adhesive), easily dilutable and cheapness are 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 transform formaldehyde in 100% ground, and this to cause in product still some free formaldehyde.A series of reversible reaction can be there is with free formaldehyde in resin in the cellulose hydroxyl group methyl in tackiness agent in high temperature, sour environment.In presence of water, the C-N key in aminoresin is hydrolyzed, and discharges formaldehyde.In addition, formaldehyde can be discharged during the such as Milled wood lignin acidic hydrolysis of other composition in Phenol aldehyde resin, shaving board, log.
The high resolution of formaldehyde in water determines its character that can be absorbed fast by human respiratory tract and GI mucous membrane.In human body, formaldehyde can be oxidized to formic acid, then breathes out with the form of carbonic acid gas, or is combined with bio-matrix and stays in the body.The stimulation of formaldehyde to eye, respiratory tract is modal untoward reaction, is also to the most obvious harm of 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 causes the news of fetal anomaly to be also often in the news because being in the environment of formaldehyde for a long time.It is worth noting, European Union is classified as formaldehyde as suspected carcinogens; Nineteen ninety-five international cancer research institution (IARC) is decided to be suspected 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 indoor environment, the formaldehyde especially in family's air is very urgent.
The means of purifying formaldehyde have multiple, but respectively have quality.Physical method, carry out as utilized gac PARA FORMALDEHYDE PRILLS(91,95) adsorbing (Zheng Jingtang etc., CN1386577), although aldehydes removal successful when starting, rapidly, adsorptive capacity is large, but persistence is poor, easy desorption, gac of must throwing aside after using for some time also buys arrangement again, which increases aldehydes removal cost.Biodegradation method, as utilized, the rhizosphere of plant absorbs, microbial metabolism etc., although there is certain effect, but the mechanism of concerns about bio purifying formaldehyde is still not clear, the problem that after plant absorption pollutent, receptivity declines also still effectively is not 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 fitting up, people often need to use wood lacquer and are coated on wooden boards, be to protect furniture on the one hand, waterproof mildew-resistant anti-scratch is in order to decorative effect on the other hand.Therefore, if fit up the ability that wood lacquer used can have efficient aldehydes removal, can by purifying formaldehyde when fitting up; its concentration is reduced greatly, so not only can reach aldehydes removal object, protect HUMAN HEALTH; also simultaneously because aldehydes removal equipment need not be bought in addition, and decoration cost is reduced.Occurred on the market being 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 the lab, but be that nanoparticle is easily reunited on the one hand, weaken catalytic effect, when material is added in coating 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, main with solid color enamel (Huang Hongting, CN101831223A) and interior wall coating (Dong Wendou, CN102051123A) be main.Photocatalyst material purifying formaldehyde is utilized to also have a place not enough, be exactly that to form the condition with the electron hole of oxidisability be the irradiation having 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, utilize the photocatalyst materials such as nano titanium oxide to carry out promoting the use of of the wood lacquer of aldehydes removal and be also worth discussion.
Some water miscible aldehydes removal materials, as utilized reactive hydrogen on hydrazides and formaldehyde reaction (as: Yuan Minglong etc., CN1463753A; Wu Jiping, CN1457045A), although rapid with formaldehyde reaction, complete in aqueous phase system, but in solvent-based system, especially be that isocyanate curing agent can react rapidly with this kind of active hydrogen substance, not only consumes except aldehyde group when employing in the coating system of isocyanate curing agent, 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 during use is dispersed in room air, will certainly make the operator's suction part aldehydes removal material simultaneously resting on this space like this, and whether these materials there is disadvantageous effect it be unclear that to human body.
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, containing the wood lacquer and preparation method thereof of the purifying formaldehyde of heavy metal component, non-toxic and safe.
The moment of dipole of formaldehyde is 7.57 × 10
?30cm, the carbonyl in formaldehyde is a unsaturated group, and Sauerstoffatom band portion negative charge, has nucleophilicity, is easy to react with electrophilic reagent.Material containing amido has reactive hydrogen, can with formaldehyde generation nucleophilic addition, this reaction can be there is in amino acids, hydrazide kind compound, amides, aminated compounds etc.
The reaction of primary amine and formaldehyde is as follows:
The reaction of secondary amine and formaldehyde is as follows:
Except nitrogen-containing group and formaldehyde reaction, containing active methylene group β ?dihydroxy substance 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 dihydroxy substance 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 when 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 purifying formaldehyde Synolac utilizing the reaction of above-mentioned amido material and formaldehyde to prepare can effective purifying 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 matter such as tea-polyphenol, Phloroglucinol also has certain aldehydes removal effect, and can provide the H of some amount after adding
+to make 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 has very high requirement to the formula of system.The present invention selects Synolac as main body filmogen, and select material containing amido as de-aldehyde agent, 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 achieve above-mentioned purpose, make de-aldehyde agent uniform fold on woodenware surface, increase the contact area with room air, thus increase the effective collision with formaldehyde molecule, improve aldehydes removal efficiency, detected result display aldehydes removal rate reaches 88% or more.And the wood lacquer of this formula is not because de-aldehyde agent affects the performance of wood lacquer, reasonable disposition of the present invention, wood lacquer excellent combination property in the outward appearance of stability in storage, paint film and the resistance to acids and bases of paint film of gained purifying formaldehyde.It should be noted that, in de-aldehyde agent used in the present invention and wood lacquer, other auxiliary agents interact, the effect of auxiliary agent can be improved, as Chao branching Ju Xian An ?the special space steric hindrance structure of amine can to play stably function, stop the reunion of the nanoparticle 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 wood lacquer of this purifying formaldehyde by mass ratio be stir after the component A of 1:0.25 ~ 1:0.5 and B component mix obtained;
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, 2 ?imidazolidone, barbituric acid, Phloroglucinol, methyl ethyl diketone, methyl aceto acetate, Michaelis acid, Terpineol 350, NVP-XAA 723, one or more in tannin and trimeric cyanamide;
Described alcoholic solvent is 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, modified polyurea N ?methyl-2-pyrrolidone or amide modifications Viscotrol C;
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, drops into Synolac and alcoholic solvent, stirs in reactor, is heated to 50 DEG C ~ 75 DEG C; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent successively, continue to stir, keep temperature 40 ~ 70 DEG C reaction 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, drops into the second thinner in reactor, and stirring at low speed (100 ~ 200rpm) 3 ~ 5 minutes, maintains the temperature at 20 ~ 40 DEG C; Under the state keeping stirring at low speed (100 ~ 200rpm), in reactor, drop into solidifying agent, flow agent, defoamer, maintain the temperature at 20 ~ 30 DEG C, stir 3 ~ 5 minutes, to be restoredly obtain B component to discharging after room temperature, 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 organosilyl surface auxiliary agent 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 and diatomite granularity are greater than 200 orders; Described aerosil, nano titanium oxide, nano-aluminium oxide and 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, adds Synolac and alcoholic solvent by formula rate, stirs in reactor, is heated to 50 DEG C ~ 75 DEG C; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent by formula rate successively, continue to stir, keep temperature 40 ~ 70 DEG C reaction 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, drops into the second thinner in reactor, and 100 ~ 200rpm stirring at low speed 3 ~ 5 minutes, maintains the temperature at 20 ~ 40 DEG C; Under the state keeping stirring at low speed, in reactor, drop into solidifying agent, flow agent, defoamer, control temperature, at 20 ~ 30 DEG C, stirs 3 ~ 5 minutes, to be restoredly obtains B component to discharging after room temperature, seals and keeps in Dark Place in cool place place;
3) take component A and B component that mass ratio is 1:0.25 ~ 1:0.5, stir after mixing, 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 compared to aromatic solvent toxicity, little to harm, compared to other solvent-borne type wood lacquers are safer in use on the market.
The step of the wood lacquer preparation process of purifying formaldehyde of the present invention is few, operates mainly control temperature and liquid agitation, and technical process is simple, and number of devices is few; Temperature required in preparation process is within 20 ~ 75 DEG C, and to pressure and no requirement (NR), therefore require low to plant and instrument, general conventional containers and paint production plant all can reach this requirement, are applicable to industrial 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 room's 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, flat smooth, does not affect the texture on woodenware surface, color and luster, has good defencive function to coated woodenware, is applicable to the finishing in the places such as such as family, office, school;
4), after the wood lacquer of purifying formaldehyde of the present invention and formaldehyde reaction, the product of generation does not have a volatility, does not produce secondary pollution;
5) solvent used 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, compared to other wood lacquers are safer in 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 industrial 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, to alleviating respiratory tract, Ocular irritation, skin irritation have obvious help, has positive effect to reduction 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 application claims protection domain.
Embodiment 1
In mass parts, the wood lacquer according to following composition preparation purifying formaldehyde:
The preparation of component A:
1) under nitrogen protection, in reactor, drop into the fatty acid modified quick-drying alkide resin of YTM3970 and ethanol, ethylene glycol in proportion, stir, be heated to 75 DEG C;
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 to make to 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, drops into n-butyl acetate and pimelinketone in reactor, and stirring at low speed (100rpm) 5 minutes, maintains the temperature at 40 DEG C; 2) keep stirring at low speed (100rpm) state under, drop in reactor toluene diisocyanate trimer, organosilyl surface auxiliary agent EL ?2813, modified silicone
maintain the temperature at 30 DEG C, 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, stir after mixing, 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, in reactor, drop into YTM3680 synthetic fat acid resin and methyl alcohol, ethanol in proportion, stir, be heated to 50 DEG C;
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 temperature 40 DEG C to react 60 minutes to make to 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, drops into n-butyl acetate and butyl ether in reactor, and stirring at low speed (200rpm) 3 minutes, maintains the temperature at 20 DEG C; 2) keep stirring at low speed (200rpm) state under, in reactor drop into 1,6 ?hexamethylene diisocyanate tripolymer, diphenylmethanediisocyanate, polyether-modified polydimethylsiloxane flow agent EL ?2824, organic silicone
maintain the temperature at 20 DEG C, 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, stir after mixing, 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, in reactor, drop into YTM3170 cocinic acid modification short-oil alkyd and methyl alcohol, ethanol, 1 in proportion, 4 ?butyleneglycol, stir, be heated to 62.5 DEG C;
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, amide modifications Viscotrol C, continue to stir, keep temperature 55 DEG C to react 37.5 minutes to make to 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, drops into n-butyl acetate and ether in reactor, and stirring at low speed (150rpm) 4 minutes, maintains the temperature at 30 DEG C; 2) keep stirring at low speed (150rpm) state under, in reactor drop into 1,6 ?hexamethylene diisocyanate tripolymer, polyether-modified polydimethylsiloxane flow agent EL ?2824, fluorine-containing broken bubble polymers soln
maintain the temperature at 25 DEG C, 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, stir after mixing, 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, in reactor, drop into YTM3380A synthetic fat acid resin and ethanol, n-propyl alcohol, 1 in proportion, 3 ?propylene glycol, stir, and are heated to 65 DEG C;
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 temperature 65 DEG C to react 30 minutes to make to 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, drops into n-butyl acetate and ethyl acetate in reactor, and stirring at low speed (150rpm) 4 minutes, maintains the temperature at 25 DEG C; 2) keep stirring at low speed (150rpm) state under, in reactor, drop into toluene diisocyanate trimer, scold water type flow agent EL ?2827, modified silicone
maintain the temperature at 25 DEG C, 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, stir after mixing, 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, 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 DEG C;
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, modified polyurea N ?methyl-2-pyrrolidone, continue to stir, keep temperature 55 DEG C to react 30 minutes to make to 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, drops into n-butyl acetate and ethyl acetate in reactor, and stirring at low speed (150rpm) 5 minutes, maintains the temperature at 25 DEG C; 2) under the state keeping stirring at low speed (150rpm), 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 DEG C, 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, stir after mixing, 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 is obtained, coating surface are smooth, do not affect the texture on woodenware surface, color and luster.The product of above-described embodiment 1 ~ 5 is carried out 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 measuring wood lacquer;
By GB9274 ?1988 resistance to acids and basess measuring paint film;
By JC/T1074 ?the 2008 purifying formaldehyde performances measuring paint film, wherein purifying formaldehyde performance >=75% be I class, >=80% be II class, decontamination effect improving persistence >=60% is I class, and >=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 ?2009 claimed range within, illustrate that this wood lacquer has enough safety in utilization; Paint film water white transparency, flat smooth, resistance to acids and bases are good, illustrate that this wood lacquer does not affect texture, the color and luster on woodenware surface, have good defencive function to coated woodenware, are applicable to the finishing in the places such as 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, can rapidly, efficiently, purify air enduringly in free formaldehyde.
The thinner used in the wood lacquer preparation process of the purifying formaldehyde of above-described embodiment 1 ~ 5 is ester class or ether solvent, not containing the aromatic solvent such as benzene, toluene.Ester class, ether solvent are compared to the aromatic solvent such as benzene, toluene, and toxicity is low, little to harm, compared to other wood lacquer is safer in use on the market.
The step of the wood lacquer preparation process of the purifying formaldehyde of above-described embodiment 1 ~ 5 is few, operates mainly control temperature and liquid agitation, and technical process is simple, and number of devices is few; Temperature required in preparation process is within 20 ~ 75 DEG C, and to pressure and no requirement (NR), therefore require low to plant and instrument, general conventional containers and production of resins equipment all can reach this requirement, are applicable to industrial volume production.
Claims (6)
1. a wood lacquer for purifying formaldehyde, is characterized in that, the wood lacquer of this purifying formaldehyde by mass ratio be stir after the component A of 1:0.25 ~ 1:0.5 and B component mix obtained;
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, 2 ?imidazolidone, barbituric acid, Phloroglucinol, methyl ethyl diketone, methyl aceto acetate, Michaelis acid, Terpineol 350, NVP-XAA 723, one or more in tannin and trimeric cyanamide;
Described alcoholic solvent is 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, modified polyurea N ?methyl-2-pyrrolidone or amide modifications Viscotrol C;
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, drops into Synolac and alcoholic solvent, stirs in reactor, is heated to 50 DEG C ~ 75 DEG C; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent successively, continue to stir, keep temperature 40 ~ 70 DEG C reaction 15 ~ 60 minutes; Return to discharging after room temperature, obtain component A;
The preparation of described B component: under nitrogen protection, drops into the second thinner in reactor, and stirring at low speed 3 ~ 5 minutes, maintains the temperature at 20 ~ 40 DEG C; Under the state keeping stirring at low speed, in reactor, drop into solidifying agent, flow agent, defoamer, maintain the temperature at 20 ~ 30 DEG C, stir 3 ~ 5 minutes, to be restored to discharging after room temperature, obtain B component.
2. the wood lacquer of purifying formaldehyde according to claim 1, it is characterized in that, described solidifying agent is 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 organosilyl surface auxiliary agent EL ?2813.
4. the wood lacquer of purifying formaldehyde according to claim 1, is characterized in that, described defoamer is organic silicone
4000, organic silicone
4006, modified silicone
4010 or fluorine-containing broken bubble polymers soln
4050.
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 and diatomite granularity are greater than 200 orders; Described aerosil, nano titanium oxide, nano-aluminium oxide and nano phase ag_2 o particle diameter are less than 50nm.
6. 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, adds Synolac and alcoholic solvent by formula rate, stirs in reactor, is heated to 50 DEG C ~ 75 DEG C; Add the first thinner, weighting agent, siccative, wax powder, de-aldehyde agent, anti-settling agent by formula rate successively, continue to stir, keep temperature 40 ~ 70 DEG C reaction 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, drops into the second thinner in reactor, and 100 ~ 200rpm stirring at low speed 3 ~ 5 minutes, maintains the temperature at 20 ~ 40 DEG C; Under the state keeping stirring at low speed, in reactor, drop into solidifying agent, flow agent, defoamer, control temperature, at 20 ~ 30 DEG C, stirs 3 ~ 5 minutes, to be restoredly obtains B component to discharging after room temperature, seals and keeps in Dark Place in cool place place;
3) take component A and B component that mass ratio is 1:0.25 ~ 1:0.5, stir after mixing, leave standstill after 10 ~ 15 minutes, be purified the wood lacquer of formaldehyde.
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| CN103421173B (en) * | 2013-08-20 | 2015-10-28 | 华南理工大学 | A kind of purifying formaldehyde Synolac and preparation method thereof |
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