CN110405896A - Without aldehyde is fire-retardant can facing particieboard and its preparation process and application - Google Patents
Without aldehyde is fire-retardant can facing particieboard and its preparation process and application Download PDFInfo
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- CN110405896A CN110405896A CN201910573796.2A CN201910573796A CN110405896A CN 110405896 A CN110405896 A CN 110405896A CN 201910573796 A CN201910573796 A CN 201910573796A CN 110405896 A CN110405896 A CN 110405896A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
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Abstract
The invention discloses a kind of no aldehyde is fire-retardant can facing particieboard and its preparation process and application.The particieboard includes sandwich layer and the surface layer in sandwich layer two sides, and according to parts by weight, the raw material composition on surface layer includes: 65-75 parts of wood wool, 8-12 parts of sawdust, 10-12 parts of modified soybean glue, 8-12 parts of melamine phosphate borate, 1-2 parts and paraffin wax emulsions 0.325-0-455 parts of MDI glue；The raw material composition of modified soybean glue includes: 25-35 parts of defatted soy flour, 10-20 parts of organosilicon modified crylic acid resin, 10-20 parts of silane coupling agent, 2-5 parts of organo montmorillonite, 0.1-0.3 parts of alkali, 4-6 parts of alcohol, 0.1-3 parts sour, and 8-12 parts and 100 parts of water of auxiliary agent.The hygroscopicity of melamine phosphate borate fire retardant itself is weaker, leach resistance is stronger, and the presence of organo montmorillonite can also further decrease its hygroscopicity, improve its leach resistance.
Description
Technical field
The invention belongs to can facing particieboard preparation technical field, and in particular to a kind of no aldehyde it is fire-retardant can facing particieboard and
Its preparation process and application.
Background technique
Can facing particieboard (being commonly called as LSB plate) be oriented structure chipboard (being commonly called as OSB plate) improvement, in work progress
In, the surface of OSB plate can inevitably leave pit-hole, and smoothness is caused to be deteriorated, and presentation quality reduces.And the outermost of LSB plate uses
Lesser flaking is mated formation, and the finished product plate surface after processing it is very smooth and flat, can be carried out various incrustations.
The bending strength of LSB plate is big, is widely used as floor base material.And as people are to building plate safety
Demand is higher and higher, and LSB plate is also required to have certain flame retardant property at present, and flame retardant property is needed through addition fire proofing
To realize.
As the Chinese invention patent of Publication No. CN104191739B discloses a kind of fire retardant, multi-layer composite material and fire-retardant
Multi-layer composite floor manufacture craft, the preparation process include: to process to substrate: (1.1) wood skin that rotary-cut or slicing is good,
6-14min is impregnated in 60-80 DEG C of degreasing water；(1.2) wood skin after degreasing is placed in halogen flame and impregnates 4-6h, so
After dry or dry to aqueous 8-12%；(1.3), pressing is carried out after wood skin after drying being coated fire-retardant mixture glue.
Fire retardant used in the fire retardant, multi-layer composite material contains halogen, and it is big, difficult to degrade to generate toxicity at high temperature
Hydrogen halides flue gas, pollute environment.Other than halogenated flame retardant, there are also use metal hydroxides powdery flame retardent (such as
CN106346584A) or inorganic type fire retardant (such as CN102935652A), however powdered metal hydroxides is easy drop
Low substrate bonding strength, and the hygroscopicity of inorganic type fire retardant is strong, leach resistance is poor, is not ideal flame retardant materials.
Summary of the invention
Present invention purpose is to provide that a kind of hygroscopicity is weak, resistance leachability is strong and the stable no aldehyde of substrate performance is fire-retardant
It can facing particieboard and its preparation process and application.
For achieving the above object, the technical solution of the application is as follows:
A kind of no aldehyde it is fire-retardant can facing particieboard, the surface layer including sandwich layer and in sandwich layer two sides, according to parts by weight, institute
The raw material composition on the surface layer stated includes: 65-75 parts of wood wool, and 8-12 parts of sawdust, 10-12 parts of modified soybean glue, phosphoric acid melamine
8-12 parts of amine borate, 1-2 parts and paraffin wax emulsions 0.325-0-455 parts of MDI glue；
According to parts by weight, the raw material composition of the modified soybean glue includes: 25-35 parts of defatted soy flour, organosilicon
It is 10-20 parts acrylic resin modified, 10-20 parts of silane coupling agent, 2-5 parts of organo montmorillonite, 0.1-0.3 parts of alkali, 4-6 parts of alcohol,
It is 0.1-3 parts sour, 8-12 parts and 100 parts of water of auxiliary agent.
Using modified soybean glue as adhesive in the present invention, wherein the carboxylic contained in organosilicon modified crylic acid resin
Base can carry out graft reaction, and silane coupling agent (molecular structural formula are as follows: Y-R-Si with amino, the hydroxyl in soybean protein
(OR)3, in formula, Y is organo-functional group, and R is alkyl) in it is then same containing can be with amino, carboxyl, the hydroxyl in soybean protein
The active function groups of equal reactions, so as to be grafted on soybean protein molecule.Also, organosilicon modified crylic acid resin and silicon
Silanol can be generated after siloxy hydrolysis in alkane coupling agent, and silanol being capable of further polycondensation formation-Si-O-Si-
Group ultimately forms the " soybean protein-organosilicon modified crylic acid resin-Si-O-Si- silane connected by-Si-O-Si- group
Coupling agent-soybean protein " composite crosslinking structure, so that the rubber made from soybean cake is not only without aldehyde and bonding strength with higher.
Meanwhile Si-O, Si- rich in the molecular structure of organosilicon modified crylic acid resin and silane coupling agent
The hydrophobic groupings such as C, therefore can obtain that water resistance is good, the long modified soybean glue of Storage period and can facing particieboard.
Also, also containing organo montmorillonite in modified soybean glue, organo montmorillonite can carry out intercalation modifying to rubber made from soybean cake,
The skin effect and small-size effect of nano organic montmorillonite make the coordination wretched insufficiency of particle surface, and activity is high, not only easily
Bonding action is played with the active group in soybean protein strand, improves the cohesive force of rubber made from soybean cake, while can also be with wood surface
Hydroxyl crosslink reaction, further increase the bonding strength of modified soybean glue, it is ensured that particleboard production stablize.
The present invention selects melamine phosphate borate as fire retardant, the hygroscopicity of melamine phosphate borate itself
It is weaker, leach resistance is stronger, and the presence of organo montmorillonite can also further decrease the moisture absorption of melamine phosphate borate
Property, improve its leach resistance.
Above-mentioned no aldehyde is fire-retardant can be in facing particieboard, according to parts by weight, the raw material composition on the surface layer includes:
70 parts of wood wool, 10 parts of sawdust, 10 parts of modified soybean glue, 10 parts of melamine phosphate borate, 1.5 parts of MDI glue and paraffin are newborn
0.4 part of liquid.
Above-mentioned no aldehyde is fire-retardant can be in facing particieboard, according to parts by weight, the raw material composition of the sandwich layer includes:
Force plane spends 100 parts, and 8-12 parts of modified soybean glue, 4-6 parts of melamine phosphate borate, 4-6 parts of borax, dodecyl dimethyl
1-2 parts and paraffin wax emulsions 0.25-0.5 parts of glycine betaine.Also contain melamine phosphate borate in sandwich layer of the invention, add simultaneously
Borax is added, borax also can be synergistic with melamine phosphate borate, improves the flame retardant property of sandwich layer.
Above-mentioned no aldehyde is fire-retardant can be in facing particieboard, according to parts by weight, the raw material composition of the sandwich layer includes:
Force plane spends 100 parts, and 10 parts of modified soybean glue, 5 parts of melamine phosphate borate, 5 parts of borax, dodecyldimethylammonium hydroxide inner salt
1.5 parts and 0.3 part of paraffin wax emulsions.
Above-mentioned no aldehyde is fire-retardant can be in facing particieboard, according to parts by weight, the raw material group of the modified soybean glue
At including: 30 parts of defatted soy flour, 15 parts of organosilicon modified crylic acid resin, 15 parts of silane coupling agent, organo montmorillonite 3.5
Part, it is 0.1 part of alkali, 5 parts of alcohol, 0.1-3 parts sour, 10 parts and 100 parts of water of auxiliary agent.
Above-mentioned no aldehyde is fire-retardant can be in facing particieboard, the silane coupling agent is γ -3- (2,3- the third oxygen of epoxy)
Propyl trimethoxy silicane.The epoxy group contained in γ -3- (the third oxygen of 2,3- epoxy) propyl trimethoxy silicane can be with soybean
Amino, carboxyl in albumen react, and are grafted to it on soybean protein.
No aldehyde of the present invention it is fire-retardant can facing particieboard preparation process the following steps are included:
(1) the preparation modified soybean glue；
(2) preset parts by weight are pressed, by force plane flower, modified soybean glue, borax, melamine phosphate borate and dodecane
Base dimethyl betaine is mixed and stirred for uniformly, continuously adding paraffin wax emulsions, stirring evenly, and obtains center stock；
(3) preset parts by weight are pressed, wood wool, sawdust, modified soybean glue and melamine phosphate borate are mixed simultaneously
It stirs evenly, continuously adds paraffin wax emulsions and MDI glue, stir evenly, obtain surface layer slurry；
(4) mat formation surface layer slurry and center stock by the sequence on " surface layer-sandwich layer-surface layer ", through room temperature cold moudling, hot pressing
After solidification and maintenance, obtain it is described without aldehyde is fire-retardant can facing particieboard.
Above-mentioned no aldehyde it is fire-retardant can facing particieboard preparation process the step of (1) in, the modified soybean glue
Preparation method includes:
(1.1) it takes suitable amino silicane coupling agent to be dissolved in enough ethanol solutions, obtains mixed solution；It is molten to the mixing
20 parts of MMT are added in liquid, are stood for 24 hours after stirring 12h, 5-10min is centrifuged under 500r/min, is dried after vacuum filtration, cleaning,
Smashing and grinding obtains organo montmorillonite to 600 mesh；
(1.2) preset parts by weight are pressed, alkali, pure and mild defatted soy flour are added sequentially in water, 30-50min is stirred, obtains
Obtain alkali modification soybean colloidal sol；
Basic hydrolysis soybean protein is first used, the strand of soybean protein is opened, and the presence of alcohol can prevent alkali modification
Caused by soybean protein molecule excessive degradation, maintain soybean protein appropriateness space structure；
(1.3) preset parts by weight are pressed, organo montmorillonite is added in the alkali modification soybean colloidal sol of Xiang Suoshu and organosilicon changes
Property acrylic resin, be adjusted with acid pH to 4.0-6.0, continuously add silane coupling agent after mixing evenly, after stirring 10-30min,
Reaction 20min is stood at room temperature, obtains cross-linking modified soy protein adhesives；
Under conditions of pH 4.0-6.0, organosilicon modified crylic acid resin and silane coupling agent can with soybean protein into
Row graft reaction, while each self-forming silanol in the molecular structure of organosilicon modified crylic acid resin and silane coupling agent, and
It is cross-linked with each other；
(1.4) preset parts by weight are pressed, auxiliary agent is added in the cross-linking modified soy protein adhesives of Xiang Suoshu, stirring is equal
It is even, obtain the modified soybean glue.
Above-mentioned no aldehyde it is fire-retardant can facing particieboard preparation process the step of (4) in, when mating formation, surface layer slurry contains
Water rate is controlled in 11.5-12%, and the moisture control of center stock is in 4.8-6.3%；The pavement thickness of surface layer and sandwich layer ratio is
40:60, the amount of mating formation are 12.0-12.1kg/m2；
The cold moudling are as follows: 2-3h is cold-pressed at 0.8-1.0MPa, press speed is no more than 22mm/min；Described
Hot-press solidifying are as follows: the hot pressing 15-20min at 165 ± 5 DEG C~215 ± 5 DEG C.
The present invention also provides the no aldehyde it is fire-retardant can facing particieboard as the application in floor base material.
The present invention also provides a kind of composite floor board, the composite floor board include it is described without aldehyde it is fire-retardant can facing particieboard,
This without aldehyde it is fire-retardant can the surface of facing particieboard be successively arranged Recombinant Wood single layer, melamine paper and transparent wear.
Compared with prior art, the beneficial effects of the present invention are embodied in:
(1) use modified soybean glue as adhesive in the present invention, wherein to contain in organosilicon modified crylic acid resin
Carboxyl can carry out graft reaction, and silane coupling agent (molecular structural formula are as follows: Y-R-Si with amino, the hydroxyl in soybean protein
(OR)3, in formula, Y is organo-functional group, and R is alkyl) in it is then same containing can be with amino, carboxyl, the hydroxyl in soybean protein
The active function groups of equal reactions, so as to be grafted on soybean protein molecule.Also, organosilicon modified crylic acid resin and silicon
Silanol can be generated after siloxy hydrolysis in alkane coupling agent, and silanol being capable of further polycondensation formation-Si-O-Si-
Group ultimately forms the " soybean protein-organosilicon modified crylic acid resin-Si-O-Si- silane connected by-Si-O-Si- group
Coupling agent-soybean protein " composite crosslinking structure, so that the rubber made from soybean cake is not only without aldehyde and bonding strength with higher.
(2) Si-O, Si-C rich in the molecular structure of organosilicon modified crylic acid resin and silane coupling agent
Equal hydrophobic groupings, therefore can obtain that water resistance is good, the long modified soybean glue of Storage period and can facing particieboard.
(3) also contain organo montmorillonite in modified soybean glue of the invention, organo montmorillonite can carry out rubber made from soybean cake slotting
Layer is modified, and the skin effect and small-size effect of nano organic montmorillonite make the coordination wretched insufficiency of particle surface, and activity is high,
Bonding action easily not only is played with the active group in soybean protein strand, improves the cohesive force of rubber made from soybean cake, while can also be with wood
The hydroxyl on material surface crosslinks reaction, further increases the bonding strength of modified soybean glue, it is ensured that particleboard production is stablized.
(4) present invention selects melamine phosphate borate as fire retardant, the suction of melamine phosphate borate itself
It is moist it is weaker, leach resistance is stronger, and the presence of organo montmorillonite can also further decrease melamine phosphate borate
Hygroscopicity improves its leach resistance.
(5) no aldehyde prepared by the present invention it is fire-retardant can the surface bonding intensity of facing particieboard reach 1.04MPa, static bending strength reaches
42.2MPa, internal bond strength reach 1.02MPa, and thickness swelling rate is only 7.6% for 24 hours, and Form aldehyde release grade is EO, plate
Hygroscopicity is weak, resistance leachability is strong, comprehensive performance is stable, and realizes the purpose of zero Form aldehyde release.
Specific embodiment
Specific embodiment is set forth below, and further details of the technical solution of the present invention.
Embodiment 1
It is 14-25% that wood machining residues, which are air-dried sunning to moisture content,；It is (long by Material disintegrator and chipper flaking again
30~120mm, wide 5~20mm, 0.20~0.80mm of thickness), flaking passes through mechanical grading, force plane flower (length is greater than 60mm) conduct
Core layer raw material, wood wool (length be less than 60mm) are used as top layer raw material with sawdust, are dried to moisture content as after 4%-8%, spare.
A kind of no aldehyde of the present embodiment it is fire-retardant can facing particieboard preparation process, comprising the following steps:
(1) modified soybean glue is prepared；
(1.1) it takes suitable amino silicane coupling agent to be dissolved in enough ethanol solutions, obtains mixed solution；It is molten to the mixing
20 parts of MMT are added in liquid, are stood for 24 hours after stirring 12h, 5-10min is centrifuged under 500r/min, is dried after vacuum filtration, cleaning,
Smashing and grinding obtains organo montmorillonite to 600 mesh；
(1.2) 0.1 part of sodium hydroxide, 5 parts of pure and mild 30 parts of defatted soy flours are added sequentially in 100 parts of water, stir 30-
50min obtains alkali modification soybean colloidal sol；
Wherein, alcohol is the mixed liquor that ethylene glycol is mixed with the ethanol water that volume fraction is 95% with volume ratio 3:2；
(1.3) 3.5 parts of organo montmorillonites and 15 parts of organosilicon modified crylic acid resins are added into alkali modification soybean colloidal sol,
It is adjusted with acid pH to 5.0,10min is stirred, continuously adds 15 parts of γ -3- (2,3- the third oxygen of epoxy) propyl trimethoxy after mixing evenly
Base silane after stirring 20min, stands reaction 20min at room temperature, obtains cross-linking modified soy protein adhesives；
(1.4) 10 parts of auxiliary agents are added into cross-linking modified soy protein adhesives, stir evenly, obtain modified soybean glue.
(2) by 100 parts of force plane flowers, 10 parts of modified soybean glue, 5 parts of boraxs, 5 parts of melamine phosphate borates and 1.5 parts
Dodecyldimethylammonium hydroxide inner salt is mixed and stirred for uniformly, continuously adding 0.3 part of paraffin wax emulsions, stirring evenly, and obtains sandwich layer slurry
Material；
Melamine phosphate borate (MPB) can also be passed through using the preparation of known method disclosed in the prior art
Following methods preparation:
(2.1) it prepares poly cyanamid tricresyl phosphate salt (MP): 200 parts of water, 10 parts of 85%H being first added in three-necked flask3PO4, 5
Part ammonium dihydrogen phosphate, stirs evenly, is heated up to 50 DEG C, obtains solvent A；18 parts of melamines are slowly added into solvent A again,
It is stirring while adding to be allowed to sufficiently react, continue constant temperature after melamine adds and stirs 2-2.5h；It, will be white to after completion of the reaction
Starchiness reactant is cooling, vacuum filtration, washs 3-4 times, obtains white solid, is put into 105 DEG C of dry 5h in air dry oven,
Obtain poly cyanamid tricresyl phosphate salt；
(2.2) it prepares melamine phosphate borate (MPB): 100 parts of water being added in three-necked flask, 15 parts of boric acid, stir
80 DEG C are warming up to after mixing uniformly, obtains transparent solvent B；30 portions of poly cyanamid tricresyl phosphate salt are taken to be slowly added into transparent solvent B, side
Edged stirring is allowed to sufficiently react, and after poly cyanamid tricresyl phosphate salt adds, continues constant temperature and stirs 2-2.5h；To after completion of the reaction,
White starchiness reactant is cooling, vacuum filtration, washing 3-4 times, obtain white solid, are put into air dry oven and do for 80 DEG C
It is dry to constant weight, obtain melamine phosphate borate.
(3) 70 parts of wood wools, 10 parts of sawdusts, 10 parts of modified soybean glue and 10 parts of melamine phosphate borates are mixed simultaneously
It stirs evenly, continuously adds 0.4 part of paraffin wax emulsions and 1.5 parts of MDI glue, stir evenly, obtain surface layer slurry；
(4) mat formation surface layer slurry and center stock by the sequence on " surface layer-sandwich layer-surface layer ", when mating formation, surface layer slurry contains
Water rate is controlled in 11.5-12%, and the moisture control of center stock is in 4.8-6.3%；The pavement thickness of surface layer and sandwich layer ratio is
40:60:40, the amount of mating formation are 12.0kg/m2；After the completion of mating formation, through room temperature cold moudling (at 0.8-1.0MPa be cold-pressed 2h,
Press speed is no more than 22mm/min), hot-press solidifying (at 165 ± 5 DEG C~215 ± 5 DEG C hot pressing 15min, i.e. a Qu Wendu
215 ± 5 DEG C, 210 ± 5 DEG C of two area's temperature, 205 ± 5 DEG C of three area's temperature, 185 ± 5 DEG C of four area's temperature, 165 ± 5 DEG C of five area's temperature)
After maintenance (in being conserved 7 days in health-preserving chamber), obtain the present embodiment without aldehyde is fire-retardant can facing particieboard.
Embodiment 2
It is 14-25% that wood machining residues, which are air-dried sunning to moisture content,；It is (long by Material disintegrator and chipper flaking again
30~120mm, wide 5~20mm, 0.20~0.80mm of thickness), flaking passes through mechanical grading, force plane flower (length is greater than 60mm) conduct
Core layer raw material, wood wool (length be less than 60mm) are used as top layer raw material with sawdust, are dried to moisture content as after 4%-8%, spare.
A kind of no aldehyde of the present embodiment it is fire-retardant can facing particieboard preparation process, comprising the following steps:
(1) modified soybean glue is prepared；
(1.1) it takes suitable amino silicane coupling agent to be dissolved in enough ethanol solutions, obtains mixed solution；It is molten to the mixing
20 parts of MMT are added in liquid, are stood for 24 hours after stirring 12h, 5-10min is centrifuged under 500r/min, is dried after vacuum filtration, cleaning,
Smashing and grinding obtains organo montmorillonite to 600 mesh；
(1.2) 0.1 part of sodium hydroxide, 4 parts of pure and mild 25 parts of defatted soy flours are added sequentially in 100 parts of water, stir 30-
50min obtains alkali modification soybean colloidal sol；
Wherein, alcohol is the mixed liquor that ethylene glycol is mixed with the ethanol water that volume fraction is 95% with volume ratio 3:2；
(1.3) 2 parts of organo montmorillonites and 10 parts of organosilicon modified crylic acid resins are added into alkali modification soybean colloidal sol, use
Acid for adjusting pH stirs 10min, continuously adds 10 parts of γ -3- (2,3- the third oxygen of epoxy) propyl trimethoxy after mixing evenly to 5.0
Silane after stirring 20min, stands reaction 20min at room temperature, obtains cross-linking modified soy protein adhesives；
(1.4) 8 parts of auxiliary agents are added into cross-linking modified soy protein adhesives, stir evenly, obtain modified soybean glue.
(2) by 100 parts of force plane flowers, 12 parts of modified soybean glue, 6 parts of boraxs, 4 parts of melamine phosphate borates and 1 part ten
Dialkyl dimethyl glycine betaine is mixed and stirred for uniformly, continuously adding 0.25 part of paraffin wax emulsions, stirring evenly, and obtains sandwich layer slurry
Material；
Melamine phosphate borate (MPB) can also be passed through using the preparation of known method disclosed in the prior art
Following methods preparation:
(2.1) it prepares poly cyanamid tricresyl phosphate salt (MP): 200 parts of water, 10 parts of 85%H being first added in three-necked flask3PO4, 5
Part ammonium dihydrogen phosphate, stirs evenly, is heated up to 50 DEG C, obtains solvent A；18 parts of melamines are slowly added into solvent A again,
It is stirring while adding to be allowed to sufficiently react, continue constant temperature after melamine adds and stirs 2-2.5h；It, will be white to after completion of the reaction
Starchiness reactant is cooling, vacuum filtration, washs 3-4 times, obtains white solid, is put into 105 DEG C of dry 5h in air dry oven,
Obtain poly cyanamid tricresyl phosphate salt；
(2.2) it prepares melamine phosphate borate (MPB): 100 parts of water being added in three-necked flask, 15 parts of boric acid, stir
80 DEG C are warming up to after mixing uniformly, obtains transparent solvent B；30 portions of poly cyanamid tricresyl phosphate salt are taken to be slowly added into transparent solvent B, side
Edged stirring is allowed to sufficiently react, and after poly cyanamid tricresyl phosphate salt adds, continues constant temperature and stirs 2-2.5h；To after completion of the reaction,
White starchiness reactant is cooling, vacuum filtration, washing 3-4 times, obtain white solid, are put into air dry oven and do for 80 DEG C
It is dry to constant weight, obtain melamine phosphate borate.
(3) 65 parts of wood wools, 8 parts of sawdusts, 10 parts of modified soybean glue and 8 parts of melamine phosphate borates are mixed and is stirred
It mixes uniformly, continuously adds 0.325 part of paraffin wax emulsions and 1 part of MDI glue, stir evenly, obtain surface layer slurry；
(4) mat formation surface layer slurry and center stock by the sequence on " surface layer-sandwich layer-surface layer ", when mating formation, surface layer slurry contains
Water rate is controlled in 11.5-12%, and the moisture control of center stock is in 4.8-6.3%；The pavement thickness of surface layer and sandwich layer ratio is
40:60:40, the amount of mating formation are 12.0kg/m2；After the completion of mating formation, through room temperature cold moudling (at 0.8-1.0MPa be cold-pressed 2h,
Press speed is no more than 22mm/min), hot-press solidifying (at 165 ± 5 DEG C~215 ± 5 DEG C hot pressing 15min, i.e. a Qu Wendu
215 ± 5 DEG C, 210 ± 5 DEG C of two area's temperature, 205 ± 5 DEG C of three area's temperature, 185 ± 5 DEG C of four area's temperature, 165 ± 5 DEG C of five area's temperature)
After maintenance (in being conserved 7 days in health-preserving chamber), obtain the present embodiment without aldehyde is fire-retardant can facing particieboard.
Embodiment 3
It is 14-25% that wood machining residues, which are air-dried sunning to moisture content,；It is (long by Material disintegrator and chipper flaking again
30~120mm, wide 5~20mm, 0.20~0.80mm of thickness), flaking passes through mechanical grading, force plane flower (length is greater than 60mm) conduct
Core layer raw material, wood wool (length be less than 60mm) are used as top layer raw material with sawdust, are dried to moisture content as after 4%-8%, spare.
A kind of no aldehyde of the present embodiment it is fire-retardant can facing particieboard preparation process, comprising the following steps:
(1) modified soybean glue is prepared；
(1.1) it takes suitable amino silicane coupling agent to be dissolved in enough ethanol solutions, obtains mixed solution；It is molten to the mixing
20 parts of MMT are added in liquid, are stood for 24 hours after stirring 12h, 5-10min is centrifuged under 500r/min, is dried after vacuum filtration, cleaning,
Smashing and grinding obtains organo montmorillonite to 600 mesh；
(1.2) 0.3 part of sodium hydroxide, 6 parts of pure and mild 35 parts of defatted soy flours are added sequentially in 100 parts of water, stir 30-
50min obtains alkali modification soybean colloidal sol；
Wherein, alcohol is the mixed liquor that ethylene glycol is mixed with the ethanol water that volume fraction is 95% with volume ratio 3:2；
(1.3) 5 parts of organo montmorillonites and 20 parts of organosilicon modified crylic acid resins are added into alkali modification soybean colloidal sol, use
Acid for adjusting pH stirs 10min, continuously adds 20 parts of γ -3- (2,3- the third oxygen of epoxy) propyl trimethoxy after mixing evenly to 5.0
Silane after stirring 20min, stands reaction 20min at room temperature, obtains cross-linking modified soy protein adhesives；
(1.4) 12 parts of auxiliary agents are added into cross-linking modified soy protein adhesives, stir evenly, obtain modified soybean glue.
(2) by 100 parts of force plane flowers, 8 parts of modified soybean glue, 4 parts of boraxs, 6 parts of melamine phosphate borates and 2 part 12
Alkyl dimethyl betaine is mixed and stirred for uniformly, continuously adding 0.5 part of paraffin wax emulsions, stirring evenly, and obtains center stock；
Melamine phosphate borate (MPB) can also be passed through using the preparation of known method disclosed in the prior art
Following methods preparation:
(2.1) it prepares poly cyanamid tricresyl phosphate salt (MP): 200 parts of water, 10 parts of 85%H being first added in three-necked flask3PO4, 5
Part ammonium dihydrogen phosphate, stirs evenly, is heated up to 50 DEG C, obtains solvent A；18 parts of melamines are slowly added into solvent A again,
It is stirring while adding to be allowed to sufficiently react, continue constant temperature after melamine adds and stirs 2-2.5h；It, will be white to after completion of the reaction
Starchiness reactant is cooling, vacuum filtration, washs 3-4 times, obtains white solid, is put into 105 DEG C of dry 5h in air dry oven,
Obtain poly cyanamid tricresyl phosphate salt；
(2.2) it prepares melamine phosphate borate (MPB): 100 parts of water being added in three-necked flask, 15 parts of boric acid, stir
80 DEG C are warming up to after mixing uniformly, obtains transparent solvent B；30 portions of poly cyanamid tricresyl phosphate salt are taken to be slowly added into transparent solvent B, side
Edged stirring is allowed to sufficiently react, and after poly cyanamid tricresyl phosphate salt adds, continues constant temperature and stirs 2-2.5h；To after completion of the reaction,
White starchiness reactant is cooling, vacuum filtration, washing 3-4 times, obtain white solid, are put into air dry oven and do for 80 DEG C
It is dry to constant weight, obtain melamine phosphate borate.
(3) 75 parts of wood wools, 12 parts of sawdusts, 12 parts of modified soybean glue and 12 parts of melamine phosphate borates are mixed simultaneously
It stirs evenly, continuously adds 0.455 part of paraffin wax emulsions and 2 parts of MDI glue, stir evenly, obtain surface layer slurry；
(4) mat formation surface layer slurry and center stock by the sequence on " surface layer-sandwich layer-surface layer ", when mating formation, surface layer slurry contains
Water rate is controlled in 11.5-12%, and the moisture control of center stock is in 4.8-6.3%；The pavement thickness of surface layer and sandwich layer ratio is
40:60:40, the amount of mating formation are 12.0kg/m2；After the completion of mating formation, through room temperature cold moudling (at 0.8-1.0MPa be cold-pressed 2h,
Press speed is no more than 22mm/min), hot-press solidifying (at 165 ± 5 DEG C~215 ± 5 DEG C hot pressing 15min, i.e. a Qu Wendu
215 ± 5 DEG C, 210 ± 5 DEG C of two area's temperature, 205 ± 5 DEG C of three area's temperature, 185 ± 5 DEG C of four area's temperature, 165 ± 5 DEG C of five area's temperature)
After maintenance (in being conserved 7 days in health-preserving chamber), obtain the present embodiment without aldehyde is fire-retardant can facing particieboard.
Embodiment 4
A kind of facing particieboard of the present embodiment, preparation method includes the following steps:
(1) by particieboard substrate (i.e. embodiment 1,2 or 3 prepare without aldehyde is fire-retardant can facing particieboard) cross glue spreader, on
Glue, resin added 270g/m are crossed in lower surface2；
(2) upper and lower surface of the particieboard substrate after gluing sticks the board using poplar board of sanding, carries out crossing glue in next step,
Resin added is 270g/m2；
(3) 50 Recombinant Woods are sticked on the surface of the board using poplar board after gluing, make first to be cold-pressed (pressure 0.8MPa, time
4min) hot pressing (110 DEG C of temperature, pressure 1.2MPa, 4.5min) forming processes afterwards；
(4) the impregnated transparent wear paper of melamine resin and impregnated paper are laid in scientific and technological wood surface, 120 DEG C,
Hot pressing 7min under 1.0MPa is unloaded after machinery is cooled to 80 DEG C, that is, obtains the facing particieboard of the present embodiment.
Comparative example 1
This comparative example without aldehyde it is fire-retardant can facing particieboard manufacture craft it is same as Example 1, but in the slurry of surface layer not
Add MPB.
Comparative example 2
This comparative example without aldehyde it is fire-retardant can facing particieboard manufacture craft it is same as Example 1, but surface layer slurry changes
Organo montmorillonite is not added in property rubber made from soybean cake.
Comparative example 3
This comparative example without aldehyde it is fire-retardant can facing particieboard manufacture craft it is same as Example 1, but surface layer slurry changes
Organosilicon modified crylic acid resin is not added in property rubber made from soybean cake.
Comparative example 4
This comparative example without aldehyde it is fire-retardant can facing particieboard manufacture craft it is same as Example 1, but surface layer slurry changes
γ -3- (the third oxygen of 2,3- epoxy) propyl trimethoxy silicane is not added in property rubber made from soybean cake.
Example 1-3, comparative example 1-4 it is obtained without aldehyde it is fire-retardant can facing particieboard, respectively according to GB/T 15104-
2006 " Decorative veneered woodbased panels ", GB-T 4897-2015 " particieboard ", GB 8624-2012 " construction material and product combustion
Burn grading performance " performance of each fire-retardant oriented structure chipboard to be tested, test result is shown in Table 1.
Table 1
Claims (10)
1. a kind of no aldehyde it is fire-retardant can facing particieboard, the surface layer including sandwich layer and in sandwich layer two sides, which is characterized in that by weight
The raw material composition of number meter, the surface layer includes: 65-75 parts of wood wool, and 8-12 parts of sawdust, 10-12 parts of modified soybean glue, phosphorus
8-12 parts of sour melamine borate salt, 1-2 parts and paraffin wax emulsions 0.325-0-455 parts of MDI glue；
According to parts by weight, the raw material composition of the modified soybean glue includes: 25-35 parts of defatted soy flour, organic-silicon-modified
10-20 parts of acrylic resin, 10-20 parts of silane coupling agent, 2-5 parts of organo montmorillonite, 0.1-0.3 parts of alkali, 4-6 parts of alcohol, acid
0.1-3 parts, 8-12 parts and 100 parts of water of auxiliary agent.
2. as described in claim 1 without aldehyde is fire-retardant can facing particieboard, which is characterized in that according to parts by weight, the table
The raw material composition of layer includes: 70 parts of wood wool, and 10 parts of sawdust, 10 parts of modified soybean glue, 10 parts of melamine phosphate borate,
1.5 parts and 0.4 part of paraffin wax emulsions of MDI glue.
3. as described in claim 1 without aldehyde is fire-retardant can facing particieboard, which is characterized in that according to parts by weight, the core
The raw material composition of layer includes: that force plane spends 100 parts, and 8-12 parts of modified soybean glue, 4-6 parts of melamine phosphate borate, borax 4-6
Part, 1-2 parts and paraffin wax emulsions 0.25-0.5 parts of dodecyldimethylammonium hydroxide inner salt.
4. as claimed in claim 3 without aldehyde is fire-retardant can facing particieboard, which is characterized in that according to parts by weight, the core
The raw material composition of layer includes: that force plane spends 100 parts, and 10 parts of modified soybean glue, 5 parts of melamine phosphate borate, 5 parts of borax, ten
1.5 parts and 0.3 part of paraffin wax emulsions of dialkyl dimethyl glycine betaine.
5. as described in any one of claim 1-4 without aldehyde is fire-retardant can facing particieboard, which is characterized in that in parts by weight
The raw material composition of meter, the modified soybean glue includes: 30 parts of defatted soy flour, and 15 parts of organosilicon modified crylic acid resin, silicon
It is 15 parts of alkane coupling agent, 3.5 parts of organo montmorillonite, 0.1 part of alkali, 5 parts of alcohol, 0.1-3 parts sour, 10 parts and 100 parts of water of auxiliary agent.
6. as claimed in claim 5 without aldehyde is fire-retardant can facing particieboard, which is characterized in that the silane coupling agent is γ-
3- (the third oxygen of 2,3- epoxy) propyl trimethoxy silicane.
7. as described in any one of claim 1-6 without aldehyde it is fire-retardant can facing particieboard preparation process, which is characterized in that
The following steps are included:
(1) the preparation modified soybean glue；
(2) preset parts by weight are pressed, by force plane flower, modified soybean glue, borax, melamine phosphate borate and dodecyl two
Methyl betaine is mixed and stirred for uniformly, continuously adding paraffin wax emulsions, stirring evenly, and obtains center stock；
(3) preset parts by weight are pressed, wood wool, sawdust, modified soybean glue and melamine phosphate borate are mixed and stirred for
Uniformly, paraffin wax emulsions and MDI glue are continuously added, are stirred evenly, surface layer slurry is obtained；
(4) mat formation surface layer slurry and center stock by the sequence on " surface layer-sandwich layer-surface layer ", through room temperature cold moudling, hot-press solidifying
After maintenance, obtain it is described without aldehyde is fire-retardant can facing particieboard.
8. as claimed in claim 7 without aldehyde it is fire-retardant can facing particieboard preparation process, which is characterized in that in step (1), institute
The preparation method for the modified soybean glue stated includes:
(1.1) it takes suitable amino silicane coupling agent to be dissolved in enough ethanol solutions, obtains mixed solution；Into the mixed solution
20 parts of MMT are added, are stood for 24 hours after stirring 12h, 5-10min is centrifuged under 500r/min, dries, crushes after vacuum filtration, cleaning
600 mesh are ground to, organo montmorillonite is obtained；
(1.2) preset parts by weight are pressed, alkali, pure and mild defatted soy flour are added sequentially in water, stir 30-50min, obtain alkali
Modified soybean colloidal sol；
(1.3) preset parts by weight are pressed, organo montmorillonite and organic-silicon-modified third is added in the alkali modification soybean colloidal sol of Xiang Suoshu
Olefin(e) acid resin is adjusted with acid pH to 4.0-6.0, continuously adds silane coupling agent after mixing evenly, after stirring 10-30min, in room
Temperature is lower to stand reaction 20min, obtains cross-linking modified soy protein adhesives；
(1.4) preset parts by weight are pressed, auxiliary agent is added in the cross-linking modified soy protein adhesives of Xiang Suoshu, stirs evenly, obtains
Obtain the modified soybean glue.
9. as claimed in claim 7 without aldehyde it is fire-retardant can facing particieboard preparation process, which is characterized in that in step (4), paving
When dress, the moisture control of surface layer slurry is in 11.5-12%, and the moisture control of center stock is in 4.8-6.3%；Surface layer and core
The pavement thickness ratio of layer is 40:60, and the amount of mating formation is 12.0-12.1kg/m2；
The cold moudling are as follows: 2-3h is cold-pressed at 0.8-1.0 MPa, press speed is no more than 22mm/min；The heat
It is cured are as follows: the hot pressing 15-20min at 165 ± 5 DEG C~215 ± 5 DEG C.
10. as described in any one of claim 1-6 without aldehyde it is fire-retardant can facing particieboard as answering in floor base material
With.
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