CN101412230B - Flame-retardant decorative veneer - Google Patents
Flame-retardant decorative veneer Download PDFInfo
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- CN101412230B CN101412230B CN2008101223162A CN200810122316A CN101412230B CN 101412230 B CN101412230 B CN 101412230B CN 2008101223162 A CN2008101223162 A CN 2008101223162A CN 200810122316 A CN200810122316 A CN 200810122316A CN 101412230 B CN101412230 B CN 101412230B
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Abstract
The invention discloses a flame-retardant decorative veneer, which is formed by compounding flame-retardant veneer plywood taken as a base board and barks of natural rare trees. A flame-retardant veneer plywood is produced through a method as follows: placing wood veneers in a flame retardant solution to perform dipping treatment; applying mixed adhesive to the upper surfaces and the lower surfaces of the veneers after the veneers are dried; assembling the veneers into a plate blank after the adhesive is applied, and then performing the processes of cold pressing, hot pressing, cutting edge, sanding, surface treating and the like to obtain the flame-retardant veneer plywood product. A flame retardant is a mixture of low ammonium polyphosphate, ammonium phosphate, ammonium pyrophosphate, urea phosphate, boric acid, and pentaerythritol, and the mixed adhesive is a mixture of wood adhesive, inorganic filler, and a curing agent. The flame-retardant decorative veneer prepared by the method has the advantages of excellent flame-retardant and fireproof performance, environmental protection performance, mechanical properties, and decoration function.
Description
(1) technical field
The present invention relates to a kind of decoration veneer, especially a kind of flame-retardant decorative veneer.
(2) technical background
Along with China's economic development growth in the living standard, the raising of people's wealth, the occasion of many application wood-base fibre and particle panel material products as building, furniture, car and boat etc., is had higher requirement.The top layer of decoration veneer has posted natural rare tree wood skin, has duplicated texture, color and luster, the decorations effect of natural rare tree uniqueness, greatly reduces the use amount of natural precious wood simultaneously, plays the effect that economizes on resources, protects environment.Therefore be widely used in fields such as indoor decorating, furniture manufacturing, but itself belongs to combustible material timber, and a large amount of uses of wooden decorative thick china are to people's the huge potential threat of life security formation, in case breaking out of fire also causes environmental pollution and enormous economic loss.Especially the public place breaking out of fire often causes great casualties and property loss.Therefore carry out flame treatment to being applied to indoor decorative faced panel products, its necessity is arranged.
After 1 day July in 2008, NFA system building material field in public executes GB GB20286 " public place fire-retardant product and assembly combustibility require and sign ", will greatly promote application and the development of flame retardant building material in decorations field, China public place.
(3) summary of the invention
The object of the present invention is to provide a kind of flame-retardant decorative veneer, its fire resistance of this flame-retardant decorative veneer meets the requirement of middle B level of GB GB 8624-2006 " construction material and the classification of goods combustibility " or C level fire proofing, meet the code requirement of GB GB 20286-2006 " public place fire-retardant product and assembly combustibility require and sign " simultaneously, and keep the physical and mechanical property and the decoration functions of decoration veneer product fine.
Flame-retardant decorative veneer of the present invention, be with flame-retardant plywood as substrate, substrate and natural rare tree wood skin is compound, and through colding pressing, obtaining after the hot pressing, edging, sanding technology, described flame-retardant plywood makes by the following method:
(1) Wooden veneer being put into concentration is 25%～50% the fire retardant aqueous solution, and described fire retardant is made up of the component of following quality proportioning: 35～70 parts of ammonium low polyphosphates, 8～25 parts in ammonium phosphate, 6～12 parts of ammonium pyrophosphates, 5～20 parts of urea phosphates, 5～12 parts of boric acid, 5～15 parts of pentaerythrites; Control fire retardant aqueous temperature flooded 30～60 minutes at 50～60 ℃;
(2) veneer after will flooding is taken out, and dries the veneers to moisture content 8%～12%;
(3) veneer after dry the processing carries out two-sided applying glue processing with mixed glue; Described mixed glue is made up of the component of following quality proportioning: 100 parts of wood adhesives, 60～100 parts of fillers, 0.5～1 part in curing agent;
(4) with veneer behind the cloth glue through assembly, cold pressing, obtain flame-retardant plywood after the hot pressing, cutting edge, sanding, cloth cover.
Concrete, glued board can be obtained by veneer assembly behind the cloth glue, also can be obtained by veneer assembly behind two above cloth glue.When behind the above cloth glue by two during the veneer assembly, the concrete processing step of step (4) is as follows: veneer intersects symmetry principle (odd-level is the cross grain veneer, and even level is vertical texture veneer) by the odd even layer and forms slab behind two above cloth glue; Slab through cold pressing, thermocompression forming obtains the glued board slab, obtains the flame-retardant plywood product behind the size cutting edge on demand of glued board slab, sanding, the cloth cover.So-called cloth cover is seeds wood skins such as the Okoume of thickness 0.3～0.65mm on the slab tow sides cloth that obtains, blue or green Piao Mu, grey olive.After by a cloth glue during veneer assembly, the concrete processing step of step (4) is as follows: seeds wood skins such as the Okoume of thickness 0.3～0.65mm, blue or green Piao Mu, grey olive are formed slab on veneer two sides cloth behind the cloth glue, slab through cold pressing, thermocompression forming obtains the glued board slab, the size cutting edge on demand of glued board slab, sanding obtain the flame-retardant plywood product.
The present invention at the assembly described in the flame-retardant plywood preparation, cold pressing, processing steps such as hot pressing, cutting edge, sanding, cloth cover are routine operation, those of ordinary skills can select technological parameter according to concrete needs.The present invention does not have special requirement for described wood adhesive, filler and curing agent, and those of ordinary skills can select from wood adhesive, filler and curing agent commonly used according to actual conditions.
Enforcement to the production method of flame-retardant plywood is specifically described below.
Wood adhesive described in the step (3) is preferably the mixing of following one or more arbitrary proportions: urea-formaldehyde resin adhesive, melamine resin adehsive stick, synvaren.Described filler is preferably the mixing of following one or more arbitrary proportions: coarse whiting, talcum powder, high clay.Described curing agent can be weak acid or ackd salt, specifically can be preferably the mixing of following one or more arbitrary proportions: ammonium chloride, phosphoric acid, formic acid, oxalic acid, citric acid.
The resin added that the described applying glue of step (3) is handled is recommended as 400～650g/m
2
The condition of colding pressing described in the step (5) is recommended as: the pressure of colding pressing is 0.8～1.5MPa, 30～90 minutes time.
Hot pressing condition described in the step (5) was recommended as: 105～120 ℃, 1.0～1.5MPa thermocompression forming 3～20 minutes.
Drying described in the step (2) can adopt following method: about the balancing water content to 20% of the veneer after will flooding under field conditions (factors) earlier, dry the veneers to moisture content 8～12% with dryer then.
The material of Wooden veneer of the present invention is poplar, Eucalyptus, weedtree etc.The thickness of glued board is generally at 2.7～20mm, and those of ordinary skills can select and adjust as required.
After making described flame-retardant plywood, it and natural rare tree wood skin is compound, through colding pressing, can obtaining described flame-retardant decorative veneer after the hot pressing, edging, sanding technology.Wherein, the described compound single face that adopts is compound or two-sided compound, and the adhesive of compound use can be the wood adhesive of using always, as urea-formaldehyde resin adhesive, melamine resin adehsive stick, synvaren etc.Describedly cold pressing, technology such as hot pressing, edging, sanding is routine operation, those of ordinary skills can select technological parameter according to concrete needs.As the condition of colding pressing can be selected: 30～90 minutes time, pressure 0.5～0.8MPa.Hot pressing condition can be selected: 105～120 ℃ of hot pressing temperatures, hot pressing time 1～5 minute, hot pressing pressure 0.5～1.0MPa.
(seeds of thickness 0.1～0.5mm) can be yellow jacket, white rubber, Manchurian ash, ebony, red wingceltis, yellow wingceltis, red sandalwood, acid branch, iron cutter, black spot, teak, safe shaddock, peach blossom core, cherry, yellow jacket, maple, black walnut etc. to described natural rare tree wood skin.
Advantage of the present invention is that production technology is simple, and less investment need not added independent main equipment; The flame treatment expense is low; Flame-retardant plywood product fire resistance is good, reaches B level or the requirement of C level MAT'L specification among the GB GB/T 8624-2006; Mix fire retardant and have the effect of catching free formaldehyde, the flame-retardant decorative veneer free formaldehyde release of producing low, can reach E
0The environmental protection grade that level is above.This flame-retardant decorative veneer product can be widely used in the indoor decorating of occasions such as furniture manufacturing, local-style dwelling houses, hotel, public place of entertainment, car and boat.
(4) description of drawings
Below in conjunction with accompanying drawing, structure of the present invention is further described, be familiar with the person skilled in art can from the explanation the detail knowledge the features and advantages of the present invention.
Fig. 1 is the structural representation of the flame-retardant decorative veneer that obtains of embodiment 1.
Fig. 2 is the structural representation of the flame-retardant decorative veneer that obtains of embodiment 2.
Wherein, 1. be Wooden veneer, 2. be glue-line, 3. be cloth cover wood skin, 4. be natural rare tree wood skin.
(5) specific embodiment
Below with specific embodiment technical scheme of the present invention is described, but protection scope of the present invention is not limited thereto.
Embodiment 1:
The 1.7mm board using poplar board is put into the fire retardant aqueous solution (fire retardant is made up of the component of following quality proportioning: 50 parts of ammonium low polyphosphates, 15 parts in ammonium phosphate, 5 parts of ammonium pyrophosphates, 5 parts of urea phosphates, 10 parts of boric acid, 15 parts of pentaerythrites), 50 ℃ of fire retardant temperature, concentration 50%, flood after 30 minutes and take out, equilibrium moisture content to 20% uses the net belt type drier to moisture content 8% under field conditions (factors).
Mixed glue: get 100 parts of melamine resin adehsives, in melamine resin adehsive, add 60 parts of talcum powder, add 0.5 part of curing agent ammonium chloride, obtain mixed glue after stirring.
With above-mentioned mixed glue to veneer cloth glue, cloth glue amount 400g/m
2Okoume wood skin at the 0.65mm of cloth up and down of board using poplar board is formed slab, and slab was put into cold press cold moudling 30 minutes, pressure 0.8MPa; Enter hot press again, 105 ℃ of hot pressing temperatures, hot pressing pressure 1.0MPa, hot pressing time 3 minutes.
With hot-forming slab cutting edge, through deciding to obtain the flame-retardant plywood substrate after the thick sanding.
At the front of flame-retardant plywood cloth urea-formaldehyde resin adhesive, post the natural white rubber slicing wood skin of 0.15mm, put into cold press and colded pressing pressure 0.5MPa 30 minutes; Enter hot press again, 105 ℃ of hot pressing temperatures, hot pressing pressure 0.5MPa, hot pressing time 1 minute.Obtain the flame-retardant decorative veneer of thickness 2.7mm after edging, the sanding.
Judge that according to GB GB 8624-2006 this goods combustibility reaches C-s1, d0, t1 level through national fire-proof construction material quality supervision and test center.
Embodiment 2:
2.6mm weedtree veneer is put into the fire retardant aqueous solution (fire retardant is made up of the component of following quality proportioning: 62 parts of ammonium low polyphosphates, 8 parts in ammonium phosphate, 5 parts of ammonium pyrophosphates, 5 parts of urea phosphates, 5 parts of boric acid, 15 parts of pentaerythrites), 50 ℃ of fire retardant temperature, concentration 35%, flood after 50 minutes and take out, equilibrium moisture content to 20% uses the net belt type drier to moisture content 8% under field conditions (factors).
Mixed glue: get 100 parts of melamine resin adehsives, in melamine resin adehsive, add 60 parts of talcum powder, add 0.5 part of curing agent ammonium chloride, obtain mixed glue after stirring.
With above-mentioned mixed glue to veneer cloth glue, cloth glue amount 400g/m
2Okoume wood skin at the 0.65mm of cloth up and down of weedtree veneer is formed slab, and slab was put into cold press cold moudling 45 minutes, pressure 0.8MPa; Enter hot press again, 105 ℃ of hot pressing temperatures, hot pressing pressure 1.0MPa, hot pressing time 3 minutes.
With hot-forming slab cutting edge, through deciding to obtain the flame-retardant plywood substrate after the thick sanding.
At the tow sides cloth mixed glue (70 parts of urea-formaldehyde resin adhesives, 30 parts of melamine resin adehsives) of flame-retardant plywood, square two sides posts the natural peach blossom core of 0.15mm slicing wood skin, puts into cold press and colds pressing pressure 0.6MPa 45 minutes; Enter hot press again, 110 ℃ of hot pressing temperatures, hot pressing pressure 0.8MPa, hot pressing time 1 minute.Obtain the flame-retardant decorative veneer of thickness 3.6mm after edging, the sanding.
Judge that according to GB GB 8624-2006 this goods combustibility reaches B-s1, d0, t1 level through national fire-proof construction material quality supervision and test center.
Embodiment 3:
1.7mm Eucalyptus veneer is put into the fire retardant aqueous solution (fire retardant is made up of the component of following quality proportioning: 60 parts of ammonium low polyphosphates, 10 parts in ammonium phosphate, 8 parts of ammonium pyrophosphates, 7 parts of urea phosphates, 5 parts of boric acid, 10 parts of pentaerythrites), 60 ℃ of fire retardant temperature, concentration 25%, flood after 30 minutes and take out, equilibrium moisture content to 20% uses the net belt type drier to moisture content 12% under field conditions (factors).
Mixed glue: get 70 parts of urea-formaldehyde resin adhesives and 30 parts of melamine resin adehsives, add 50 parts of talcum powder, add 50 parts of high clays, add 0.2 part of curing agent phosphoric acid, 0.5 part of curing agent ammonium chloride obtains mixed glue after stirring.
With above-mentioned mixed glue to veneer cloth glue, cloth glue amount 650g/m
2By odd even layer intersection symmetry principle assembly, slab was put into cold press cold moudling 90 minutes, pressure 1.0MPa with 9 layers of 1.7mm Eucalyptus veneer; Enter hot press again, 120 ℃ of hot pressing temperatures, hot pressing pressure 1.2MPa, hot pressing time 16 minutes.
With hot-forming slab cutting edge, sanding, cloth cover again, surface layer are the Okoume wood skin of 0.35mm, through obtaining the flame-retardant plywood substrate after the thick sanding calmly.
At the tow sides cloth urea-formaldehyde resin adhesive of flame-retardant plywood substrate, the two-sided natural Manchurian ash slicing wood of the 0.5mm skin that posts is put into cold press and was colded pressing pressure 0.8MPa 90 minutes; Enter hot press again, 110 ℃ of hot pressing temperatures, hot pressing pressure 0.8MPa, hot pressing time 3 minutes.Obtain the flame-retardant decorative veneer of thickness 16mm after edging, the sanding.
Judge that according to GB GB 8624-2006 this goods combustibility reaches C-s1, d0, t1 level through national fire-proof construction material quality supervision and test center.
Claims (11)
1. flame-retardant decorative veneer, be with flame-retardant plywood as substrate, skin is compound obtains with substrate and natural rare tree wood, it is characterized in that described flame-retardant plywood makes by the following method:
(1) Wooden veneer being put into concentration is 25%～50% the fire retardant aqueous solution, and described fire retardant is made up of the component of following quality proportioning: 35～70 parts of ammonium low polyphosphates, 8～25 parts in ammonium phosphate, 6～12 parts of ammonium pyrophosphates, 5～20 parts of urea phosphates, 5～12 parts of boric acid, 5～15 parts of pentaerythrites; Control fire retardant aqueous temperature flooded 30～60 minutes at 50～60 ℃;
(2) veneer after will flooding is taken out, and dries the veneers to moisture content 8%～12%;
(3) veneer after dry the processing carries out two-sided applying glue processing with mixed glue; Described mixed glue is made up of the component of following quality proportioning: 100 parts of wood adhesives, 60～100 parts of fillers, 0.5～1 part in curing agent;
(4) with veneer behind the cloth glue through assembly, cold pressing, obtain flame-retardant plywood after the hot pressing, cutting edge, sanding, cloth cover; Perhaps cloth overwood skin in veneer two sides is formed slab behind a cloth glue, slab through cold pressing, thermocompression forming obtains the glued board slab, the size cutting edge on demand of glued board slab, sanding obtain the flame-retardant plywood product.
2. flame-retardant decorative veneer as claimed in claim 1 is characterized in that the concrete processing step of described step (4) is as follows: veneer behind two above cloth glue is formed slab by odd even layer intersection symmetry principle; Slab through cold pressing, thermocompression forming obtains the glued board slab, obtains the flame-retardant plywood product behind the size cutting edge on demand of glued board slab, sanding, the cloth cover.
3. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that described wood adhesive is the mixing of following one or more arbitrary proportions: urea-formaldehyde resin adhesive, melamine resin adehsive stick, synvaren.
4. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that the filler described in the step (3) is the mixing of following one or more arbitrary proportions: coarse whiting, talcum powder, high clay.
5. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that the curing agent described in the step (3) is the mixing of following one or more arbitrary proportions: ammonium chloride, phosphoric acid, formic acid, oxalic acid, citric acid.
6. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that the resin added that the described applying glue of step (3) is handled is 400～650g/m
2
7. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that described flame-retardant plywood substrate and natural rare tree wood skin is that single or double is compound.
8. flame-retardant decorative veneer as claimed in claim 1 or 2, the material that it is characterized in that described Wooden veneer is Eucalyptus or weedtree.
9. flame-retardant decorative veneer as claimed in claim 1 or 2, the material that it is characterized in that described Wooden veneer is a poplar.
10. flame-retardant decorative veneer as claimed in claim 1 or 2, the seeds that it is characterized in that described natural rare tree wood skin are yellow jacket, white rubber, Manchurian ash, ebony, red wingceltis, yellow wingceltis, red sandalwood, black spot, teak, peach blossom core, cherry, maple or black walnut.
11. flame-retardant decorative veneer as claimed in claim 1 or 2 is characterized in that the seeds of described natural rare tree wood skin are acid branch, iron cutter or safe shaddock.
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| CN2008101223162A CN101412230B (en) | 2008-11-10 | 2008-11-10 | Flame-retardant decorative veneer |
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| CN2008101223162A CN101412230B (en) | 2008-11-10 | 2008-11-10 | Flame-retardant decorative veneer |
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| CN101412230B true CN101412230B (en) | 2010-10-13 |
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