CN101804655A - Process for producing formaldehyde-removing solid wood flooring - Google Patents
Process for producing formaldehyde-removing solid wood flooring Download PDFInfo
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- CN101804655A CN101804655A CN200910011611A CN200910011611A CN101804655A CN 101804655 A CN101804655 A CN 101804655A CN 200910011611 A CN200910011611 A CN 200910011611A CN 200910011611 A CN200910011611 A CN 200910011611A CN 101804655 A CN101804655 A CN 101804655A
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Abstract
The invention relates to a process for producing formaldehyde-removing solid wood flooring. The process comprises the following steps of: forming a solid wood flooring block, sanding the block, removing dust, coloring, coating UV putty coat I, solidifying I, sanding I, coating UV putty coat II, solidifying II, sanding II, coating wear resistant base coat, semi-solidifying I, coating transparent UV base coat, solidifying III, sanding III, coating UV finishing coat, semi-solidifying II, coating formaldehyde-removing UV wear resistant finishing coat, solidifying IV, and forming the finished product. The solid wood flooring produced by the process has the advantages of good colour and lustre, clear texture, high anti-bending static bending strength, good surface abrasion resistance, stable size, small deformation and special effects on adsorbing and degrading free formaldehyde in indoor air.
Description
Technical field
The present invention relates to a kind of production technology of solid wooden floor board, relate in particular to a kind of production technology of formaldehyde-removing solid wood flooring.
Background technology
Solid wooden floor board is to be raw material with natural material timber, is the floor that same seeds process from the surface to the end.Because it selects natural material for use, remains its natural true qualities, can not produce pollution, is difficult for dust suction, just to cater to and pursuing health, the style of uphold nature is genuine green building material product.Because solid wooden floor board has that feel is comfortable, good springiness, coefficient of friction are little, and anti-skidding again, long-lived advantage has won consumers in general's favor in house ornamentation market.It is compared with other floor decorative material, and solid wooden floor board also has the good sound absorption effect, the ability of temperature and humidity in the conditioning chamber.
But in the prior art, in manufacturing the process of solid wooden floor board,, make solid wooden floor board contain a large amount of formaldehyde owing to used some chemical reagent.Formaldehyde fusing point-92 ℃, boiling point-21 ℃, the density when liquid is 0.815 gram per centimeter
3(20 ℃), soluble in water and ethanol.Aldehyde radical is arranged in the formaldehyde molecule, is a kind of important Organic Ingredients, is irritative gas colourless, that have overpowering odor.Owing to used adhesive, thereby can contain formaldehyde in the various artificial boards (particieboard, fiberboard, glued board etc.).New-type manufacturing furniture, the decoration on metope, ground is laid, and all will use adhesive.The place of every a large amount of use adhesives always has formaldehyde and discharges.In addition, some chemical fibre carpet, paint also contain a certain amount of formaldehyde.Large chemical products that formaldehyde belongs to is of many uses, production technology is simple, raw material supply is sufficient are the trunks in the Downstream Products of Methanol, and world's annual production is about 2,500 ten thousand tons, and about 30% methyl alcohol all is used for producing formaldehyde.The main cause of formaldehyde abuse is the price that it is cheap.Formaldehyde output becomes the trend of cumulative year after year, and this development with textile industry and building materials industry is consistent, and this explanation formaldehyde in a very long time from now on still is the favorite of chemical industry.Often suck a small amount of formaldehyde, can cause slow poisoning, mucous hyperemia, skin irritatin disease, allergic dermatitis, nail angling and fragility, nail matrix finger tip pain etc. occur.Constitutional symptom have headache, weak, that stomach is received is poor, palpitaition, have a sleepless night, lose weight and vegetative nervous disorder etc.Formaldehyde mainly contains the following aspects to health hazard: spread effect, the main harm of formaldehyde shows as Mucocutaneous spread effect, formaldehyde is the protoplasmic poison material, can occur the serious stimulation of respiratory tract and oedema, eye stimulation when sucking, have a headache with combined with protein, high concentration; Sensitization, skin directly contact formaldehyde can cause allergic dermatitis, color spot, necrosis, can bring out bronchial astehma when sucking high-concentration formaldehyde.Mutagenesis, high-concentration formaldehyde still are a kind of genotoxicity material.Animal used as test can cause rhinopharyngeal neoplasm under the situation that the laboratory high concentration sucks.Indoor is human topmost activity space, people every day the indoor live and work time at least more than 12 hours, room air has fundamental influence to human beings'health.Because technology and material are limit, in making indoor furniture and fitment process, also can't total ban use the raw material that contain formaldehyde components at present, can't remove the harm of formaldehyde from the source, therefore, efficient and eco-friendly indoor formaldehyde is removed material and is had a good application prospect.Use owing to can not limit formaldehyde comprehensively, eliminating and reducing formaldehyde harm is the task of top priority.
Summary of the invention
The present invention is directed to the problem that exists in the above-mentioned conventional art, explore through great efforts and study, a kind of production technology of formaldehyde-removing solid wood flooring is provided, in solid wooden floor board manufacturing process, add and remove the formaldehyde agent, it is the compound porous photocatalytic material of nano TiO 2/diatomite, eliminate and reduce formaldehyde harm, fixing and absorb formaldehyde in the solid wooden floor board; Absorb formaldehyde in the air.
The production technology of formaldehyde-removing solid wood flooring comprises the steps:
Moulding solid wooden floor board floorboard → material sanding → dedusting → painted → UV putty lacquer I → curing I → sanding I → UV putty lacquer II → curing II → sanding II → wear-resistant primer → semi-solid preparation I → transparent UV priming paint → curing III → sanding III → UV finish paint → semi-solid preparation II → except that the wear-resisting finish paint of formaldehyde UV → curing IV → finished product;
Moulding solid wooden floor board floorboard: with woollen plane, side levelling, look for directly, dimensional tolerance will satisfy the condition that enters next procedure; Through the floorboard that planer gets off, put by grade; Floorboard can not leave the hair stubble, gnaw a phenomenon after two-sided thicknesser processing; Must not there be breakage in the front of floorboard end face;
Material sanding: with the first sand of sanding band, the floorboard after the sanding must not the hairiness stubble, gnaw a phenomenon;
Dedusting: the floor panel face after dedusting must not leave any vestige;
Painted: as to press demand plate plate face colouring over the ground;
UV putty lacquer I: UV putty lacquer of roller coating, fill floor panel face pore;
Solidify I: use UV ultraviolet curing UV putty lacquer I coating;
Sanding I: with sanding band sanding surface, make have an even surface, smooth;
UV putty lacquer II: UV putty lacquer of roller coating, fill floor panel face pore;
Solidify II: use UV ultraviolet curing UV putty lacquer I coating;
Sanding II: with sanding band sanding surface, make have an even surface, smooth;
The UV wear-resistant primer: UV wear-resistant primer of roller coating, increase the plumpness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation I: use UV ultraviolet curing UV wear-resistant primer coating to semi-cured state;
The UV transparent priming: UV transparent priming of roller coating, increase the plumpness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Solidify III: use UV ultraviolet curing UV transparent priming;
Sanding III: with sanding band sanding surface, make have an even surface, smooth;
The UV finish paint: UV finish paint of roller coating, increase plumpness, flatness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation II: use UV ultraviolet curing UV topcoat to semi-cured state;
Remove the wear-resisting finish paint of formaldehyde agent UV: the 4-10g nano-TiO
2/ tripolite composite catalyst/1000g finish paint, nano-TiO
2/ tripolite composite catalyst is except that the formaldehyde agent; Roller coating once removes the wear-resisting finish paint of formaldehyde agent UV, makes surface abrasion resistance, hard, scratch resistance, bright and clean, smooth, fire-retardant;
Solidify IV: use the UV ultraviolet curing to remove the wear-resisting finish paint of formaldehyde agent UV;
Finished product.
In the step of described moulding solid wooden floor board floorboard, dimensional tolerance will satisfy than given size and manys 2mm, and the bending of plate face must not surpass 5mm, and the end face on floor is 90 ° of right angles.
In the step of described moulding solid wooden floor board floorboard, blank plate after the two-sided planing hot press of packing into carries out hot pressing and drying, make the fibre structure of blank plate tight, intensity improves, and moisture content reduces, blank plate after hot pressing, place and send into four side moulder again after health in 24 hours is handled, carry out S4S and vertically open sample, heating platen unit pressure 2.0-2.2MPa, 180-200 ℃ of heating platen temperature, compression ratio are 15-20%.
In described UV putty lacquer I and the UV putty lacquer II step, temperature is 60 ± 5 ℃.
In described UV wear-resistant primer and the UV transparent priming step, temperature is 45 ± 5 ℃.
In the described UV finish paint step, temperature is 45 ± 5 ℃.
It is key of the present invention that adding removes the formaldehyde agent, crosses the major general and does not reach except that the formaldehyde effect, too much will influence every index of finish paint.Studies show that the Nano/micron compound particle is meant two or more micron, the ultrafine particle that nano particle forms after surface coating and Combined Processing.When nano particle and micro particles are carried out suitable compound tense, the compound particle that makes had often both had the characteristic of nano particle, but also can make micro particles show the characteristic of nano particle.
The main effect of carrier of photocatalyst has:
(1) carrier is with TiO
2Fix and to prevent TiO
2The loss of powder particle and be easy to recycle has overcome suspended phase TiO
2Shortcoming.
(2) carrier can improve TiO
2Utilization rate, promptly covered one deck TiO at carrier surface
2, increased TiO
2Specific area, and then increased effective TiO
2Amount.
(3) some carriers can same TiO
2Interact, help electronics (e
-) and (h
+) separation and increase absorption to reactant, improve TiO
2Photocatalytic activity.
(4) utilization rate of raising light source is with TiO
2After making film, do not have the problem of covering between catalyst particle, being subjected to light-struck catalyst particle number increases, and helps improving photocatalytic activity.
(5) with carrier catalyst is fixed, be convenient to catalyst is carried out finishing and makes the reactor of different shape.
At present, formaldehyde gas improvement method mainly contains physisorphtion, chemical reaction method, catalytic oxidation, bioanalysis, composite algorithm and cold plasma method.The whole bag of tricks relatively, photocatalytic oxidation have at room temperature can use, advantages such as energy consumption is low, non-secondary pollution, be a kind of new method that purifies air that has a extensive future.In view of above reason, utilize the nano-TiO of preparation
2The research of photocatalytic degradation formaldehyde gas has been carried out in the agent of/diatomite composite photocatalytic, is used for the feasibility that formaldehyde gas purifies with the composite catalyst of exploring this research preparation.Nano-TiO
2/ tripolite composite catalyst repeated experiment studies show that the composite catalyst recycling of Experiment Preparation is convenient, has stability and reusability preferably, and this feature is significant to its practical application.
Photocatalytic oxidation is a kind of novel environmental clean technologies that recent two decades grows up, it have the reaction condition gentleness, with low cost, can make full use of characteristics such as luminous energy, energy consumption are low, non-secondary pollution, the many organic matters that are difficult to biodegradation or are difficult to handle of degradable by other chemical method, therefore, photocatalytic oxidation has very wide application prospect in the sterilization of drinking water and the aspects such as advanced treating of virus killing, various bio-refractory organic wastewater, industry and sanitary wastewater.
Advantageous effect of the present invention is as follows:
This composite photocatalyst material all has excellent photocatalytic performance and stability and repeat performance good under ultraviolet light and sunshine and fluorescent lamp.Under sunshine, the percent of decolourization and the COD clearance of Rhodamine-B solution have all reached more than 95% in the 2h; The degradation rate of phenol reaches 99.18% in the 6h; COD degradation rate 95.59%; Under the fluorescent lamp irradiation, 24h Degradation Formaldehyde rate is greater than 80%.With the nano titanium oxide success be carried on the diatomite surface, prepare nano-TiO
2/ diatomite composite material is used for administering waste water, waste gas, and both comprehensive advantages of the two can overcome the two deficiency again, has developed the new method of a kind of environmental improvement and the utilization of resources simultaneously again.TiO
2Photocatalysis oxidation technique can utilize sunshine to be used for environmental improvement for main energy sources, and this Products Development utilization, more has outstanding meaning at the today the energy, the environment two large problems puzzlement mankind.Only the 24h content of formaldehyde reaches or near the E1 level environmental protection standard that country's " IAQ standard " GB18883-2002 regulation both it has often been said, is suitable for penetration and promotion.
In addition, what the present invention was different with traditional solid wooden floor board manufacture craft is, has added heat-press step, under high temperature, high pressure effect, makes floor blank MOR improve 40%.Simultaneously, the floor surface fiber incrusting substance is dissolved, and it is coalescent under high pressure to distribute again, the floor surface wear resistence improves 1.8 times.Adopt heat pressing process, saved that labour intensity is big, the drying process of length consuming time, make floor processing be more conducive to work continuously.The floor blank after high temperature (180-200 ℃) sterilization processing, has improved anti-rotten, the anti-insect performance in floor when hot pressing.By hot-pressing processing, make solid wood itself obtain modification, can meet or exceed the physical property of common natural broadleaf.And the solid wooden floor board color and luster of explained hereafter of the present invention is good, clean mark, and bending resistance MOR height, surface abrasion resistance is good, dimensionally stable, deflection is little, has the effect of free formaldehyde in unique absorption, the degraded room air.
The specific embodiment
In conjunction with specific embodiments, specifically describe as follows to production technology of the present invention:
Embodiment 1
Select solid wood specification 1200 * 100 * 18mm;
Moulding solid wooden floor board floorboard: with woollen plane, side levelling, look for directly, dimensional tolerance will satisfy the condition that enters next procedure, promptly manys 2mm than given size; Through the floorboard that planer gets off, to put by grade, floorboard crooked, crackle must detect places the waste material storeroom; Floorboard can not leave the hair stubble, gnaw a phenomenon after two-sided thicknesser processing, and the bending of plate face must not surpass 5mm; Blank plate after the two-sided planing hot press of packing into carries out hot pressing and drying, make the fibre structure of blank plate tight, intensity improves, moisture content reduces, and the blank plate after hot pressing is placed and sent into four side moulder again after health in 24 hours is handled, carry out S4S and vertically open sample, heating platen unit pressure 2.2MPa, 200 ℃ of heating platen temperature, compression ratio are 20%; The floorboard end face is 90 ° of right angles, and must not there be breakage in the front of floorboard;
Material sanding: use 80#, 150#, 180# or 240# sanding band carry out syllogic sand just, and the floorboard after the sanding must not the hairiness stubble, gnaw a phenomenon;
Dedusting: the floor panel face after dedusting must not leave any vestige;
Painted: as to press demand plate plate face colouring over the ground;
UV putty lacquer I: under 60 ± 5 ℃ of conditions, UV putty lacquer of roller coating is filled floor panel face pore;
Solidify I: use UV ultraviolet curing UV putty lacquer I coating;
Sanding I: with 300# sanding band sanding surface, make have an even surface, smooth;
UV putty lacquer II: under 60 ± 5 ℃ of conditions, UV putty lacquer of roller coating is filled floor panel face pore;
Solidify II: use UV ultraviolet curing UV putty lacquer I coating;
Sanding II: with 300# sanding band sanding surface, make have an even surface, smooth;
The UV wear-resistant primer: under 45 ± 5 ℃ of conditions, UV wear-resistant primer of roller coating increases the plumpness and the hardness on surface, and plays flame retardant effect, and through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation I: use UV ultraviolet curing UV wear-resistant primer coating to semi-cured state;
The UV transparent priming: under 45 ± 5 ℃ of conditions, UV transparent priming of roller coating increases the plumpness and the hardness on surface, and plays flame retardant effect, and through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Solidify III: use UV ultraviolet curing UV transparent priming;
Sanding III: with 380# sanding band sanding surface, make have an even surface, smooth;
The UV finish paint: under 45 ± 5 ℃ of conditions, UV finish paint of roller coating increases plumpness, flatness and the hardness on surface, and plays flame retardant effect, and through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation II: use UV ultraviolet curing UV topcoat to semi-cured state;
Remove the wear-resisting finish paint of formaldehyde agent UV: the 5g nano-TiO
2/ tripolite composite catalyst/1000g finish paint, nano-TiO
2/ tripolite composite catalyst is except that the formaldehyde agent; Under 45 ± 5 ℃ of conditions, roller coating once removes the wear-resisting finish paint of formaldehyde agent UV, makes surface abrasion resistance, hard, scratch resistance, bright and clean, smooth, fire-retardant;
Solidify IV: use the UV ultraviolet curing to remove the wear-resisting finish paint of formaldehyde agent UV;
Finished product.
Embodiment 2
Select solid wood specification 900 * 100 * 18mm, heating platen unit pressure 2.0MPa, 180 ℃ of heating platen temperature, compression ratio are 15%; The 4g nano-TiO
2/ tripolite composite catalyst/1000g finish paint; Other step is with embodiment 1.
Embodiment 3
Select the solid wood specification according to customer requirements, heating platen unit pressure 2.1MPa, 190 ℃ of heating platen temperature, compression ratio are 18%; The 10g nano-TiO
2/ tripolite composite catalyst/1000g finish paint; Other step is with embodiment 1.
Nano-TiO
2/ tripolite composite catalyst is used tripolite loading nano TiO
2Material, on the diatomite surface uniform load crystal formation be the nano-TiO of anatase titanium dioxide
2Particle; TiO
2Grain size is about 12nm; TiO
2Combine between particle and the diatomite closely; TiO
2Coating thickness 200nm～300nm; TiO
2Load capacity is 15%～60% of a diatomite quality.
Claims (8)
1. the production technology of formaldehyde-removing solid wood flooring is characterized in that comprising the steps:
The production technology of formaldehyde-removing solid wood flooring comprises the steps:
Moulding solid wooden floor board floorboard → material sanding → dedusting → painted → UV putty lacquer I → curing I → sanding I → UV putty lacquer II → curing II → sanding II → wear-resistant primer → semi-solid preparation I → transparent UV priming paint → curing III → sanding III → UV finish paint → semi-solid preparation II → except that the wear-resisting finish paint of formaldehyde UV → curing IV → finished product;
Moulding solid wooden floor board floorboard: with woollen plane, side levelling, look for directly, dimensional tolerance will satisfy the condition that enters next procedure; Through the floorboard that planer gets off, put by grade; Floorboard can not leave the hair stubble, gnaw a phenomenon after two-sided thicknesser processing; Must not there be breakage in the front of floorboard end face;
Material sanding: carry out syllogic sand just with the sanding band, the floorboard after the sanding must not the hairiness stubble, gnaw a phenomenon;
Dedusting: the floor panel face after dedusting must not leave any vestige;
Painted: as to press demand plate plate face colouring over the ground;
UV putty lacquer I: UV putty lacquer of roller coating, fill floor panel face pore;
Solidify I: use UV ultraviolet curing UV putty lacquer I coating;
Sanding I: with sanding band sanding surface, make have an even surface, smooth;
UV putty lacquer II: UV putty lacquer of roller coating, fill floor panel face pore;
Solidify II: use UV ultraviolet curing UV putty lacquer I coating;
Sanding II: with sanding band sanding surface, make have an even surface, smooth;
The UV wear-resistant primer: UV wear-resistant primer of roller coating, increase the plumpness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation I: use UV ultraviolet curing UV wear-resistant primer coating to semi-cured state;
The UV transparent priming: UV transparent priming of roller coating, increase the plumpness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Solidify III: use UV ultraviolet curing UV transparent priming;
Sanding III: with sanding band sanding surface, make have an even surface, smooth;
The UV finish paint: UV finish paint of roller coating, increase plumpness, flatness and the hardness on surface, and play flame retardant effect, through rolling the floor panel face of lacquerer's preface, lacquer painting is wanted evenly must not leave blank;
Semi-solid preparation II: use UV ultraviolet curing UV topcoat to semi-cured state;
Remove the wear-resisting finish paint of formaldehyde agent UV: the 4-10g nano-TiO
2/ tripolite composite catalyst/1000g finish paint, nano-TiO
2/ tripolite composite catalyst is except that the formaldehyde agent; Roller coating once removes the wear-resisting finish paint of formaldehyde agent UV, makes surface abrasion resistance, hard, scratch resistance, bright and clean, smooth, fire-retardant;
Solidify IV: use the UV ultraviolet curing to remove the wear-resisting finish paint of formaldehyde agent UV;
Finished product.
2. the production technology of formaldehyde-removing solid wood flooring according to claim 1, it is characterized in that in the step of described moulding solid wooden floor board floorboard, dimensional tolerance will satisfy than given size and manys 2mm, and the bending of plate face must not surpass 5mm, and the end face on floor is 90 ° of right angles.
3. the production technology of formaldehyde-removing solid wood flooring according to claim 1, it is characterized in that in the step of described moulding solid wooden floor board floorboard, blank plate after the two-sided planing hot press of packing into carries out hot pressing and drying, make the fibre structure of blank plate tight, intensity improves, moisture content reduces, blank plate after hot pressing, place and send into four side moulder again after health in 24 hours is handled, carry out S4S and vertically open sample, heating platen unit pressure 2.0-2.2MPa, 180-200 ℃ of heating platen temperature, compression ratio are 15-20%.
4. the production technology of formaldehyde-removing solid wood flooring according to claim 1 is characterized in that using 80# in the described material sanding step, and 150#, 180# or 240# sanding band carry out syllogic sand just.
5. the production technology of formaldehyde-removing solid wood flooring according to claim 1 is characterized in that temperature is 60 ± 5 ℃ in described UV putty lacquer I and the UV putty lacquer II step.
6. the production technology of formaldehyde-removing solid wood flooring according to claim 1 is characterized in that temperature is 45 ± 5 ℃ in described UV wear-resistant primer and the UV transparent priming step.
7. the production technology of formaldehyde-removing solid wood flooring according to claim 1 is characterized in that temperature is 45 ± 5 ℃ in the described UV finish paint step.
8. the production technology of formaldehyde-removing solid wood flooring according to claim 1 is characterized in that described removing in the wear-resisting finish paint step of formaldehyde agent UV, adds the 5g nano-TiO in the wear-resisting finish paint of UV
2/ diatomite composite photocatalytic agent/1000g.
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Application publication date: 20100818 Assignee: Linjiang City Baojian wood limited liability company Assignor: Wang Xiubao Contract record no.: 2015220000004 Denomination of invention: Process for producing formaldehyde-removing solid wood flooring Granted publication date: 20120509 License type: Exclusive License Record date: 20150227 |
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