CN103624843A - Production method of flame-retardant veneer - Google Patents
Production method of flame-retardant veneer Download PDFInfo
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- CN103624843A CN103624843A CN201310675755.7A CN201310675755A CN103624843A CN 103624843 A CN103624843 A CN 103624843A CN 201310675755 A CN201310675755 A CN 201310675755A CN 103624843 A CN103624843 A CN 103624843A
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- flame
- retardant plywood
- veneer
- production method
- adhesive
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Abstract
The invention discloses a production method of a flame-retardant veneer. The flame-retardant veneer has the characteristics of small heat releasing rate, low formaldehyde releasing quantity and the like. The flame-retardant veneer is produced in the following steps: soaking a wooden board in an ammonium polyphosphate/molecular sieve solution with a given concentration, drying the board, gluing the board, assembling the board, and thermally pressing the board.
Description
Technical field
The present invention relates to a kind of glued board, particularly a kind of production method of the flame-retardant plywood after phosphor nitrogen combustion inhibitor and synergist processing.
Background technology
Glued board, with its good physical and mechanical property and processing characteristics, is widely used in the fields such as furniture, timber, interior decoration and building industry.After 1 day July in 2008, NFA system in public building material field is executed GB GB20286 < < public place fire-retardant product and the requirement of assembly combustibility and sign > >.Glued board belongs to combustible material, has limited its use in public places.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flame-retardant plywood, makes the method produce the flame-retardant plywood HRR obtaining low, and burst size of methanal is low.
For solving the problems of the technologies described above, the present invention realizes by following embodiment:
A flame-retardant plywood with low HRR, single layer structure, raw material comprises Wooden veneer, phosphor nitrogen combustion inhibitor, synergist, and adhesive.
Described Wooden veneer: phosphor nitrogen combustion inhibitor: synergist: the oven dry weight percentage of adhesive is 100:15-20:1-8:7-15.
Further, described Wooden veneer be timber by softwood or broadleaf seeds through rotary-cut or slicing, make the veneer that thickness is 0.1mm-5mm, moisture content is 6-8%.
Further, described phosphor nitrogen combustion inhibitor is the water-soluble APP of low polymerization degree.
Further, described modifier is molecular sieve.
Described molecular sieve type is 4A.
Further, described adhesive is the mixture of one or more arbitrary proportions in urea-formaldehyde resin adhesive, cyanurotriamide modified urea resin adhesive, phenolic resin adhesive.
In described adhesive, also comprise and add ammonium chloride and flour, use stirs.
A production method for flame-retardant plywood, comprises the following steps:
(1) Wooden veneer being put into concentration is the fire retardant of 10%-20% and the mixed liquor of modifier;
(2) veneer after step (1) impregnation process is taken out, dry the veneers to moisture content 8-12%;
(3) Wooden veneer after step (2) processing is carried out to two-sided applying glue processing with adhesive;
(4) veneer after step (3) is processed through assembly, cold pressing, obtain flame-retardant plywood product after hot pressing, cutting edge, sanding.
Phosphor nitrogen combustion inhibitor described in step (1) is the water-soluble APP of low polymerization degree.
The described modifier of step (1) is molecular sieve, and described molecular sieve type is 4A.Described modifier recommended amounts is 1-8%.
Dry can adopting with the following method described in step (2): first, under field conditions (factors) by balancing water content to 20% left and right of Wooden veneer after dipping, then dry the veneers to moisture content 8-12% with air dry oven.
Resin added described in step (3) is 200-280g/m
2.
Described in step (4), hot pressing condition is: hot pressing temperature 105-120 ℃, and hot pressing pressure is 1.0-1.5MPa, hot pressing time is 60-65s/mm.
Innovative point of the present invention has been to use fire retardant and the modifier of the present invention's formula, and its beneficial effect is mainly reflected in: can significantly reduce the HRR of glued board, burst size of methanal is low.
Flame-retardant plywood provided by the invention can be widely used in the fields such as interior decoration, furniture, car and boat, building materials.
For achieving the above object, the invention provides following technical scheme
1, veneer dipping
Wooden veneer is immersed in the 4A molecular sieve mixed solution of APP that concentration is 10-20% and 1-8%;
2, veneer drying
Veneer after dipping is dried to moisture content 20% left and right under field conditions (factors), then in drying box, to be dried to moisture content be 8-12%;
3, applying glue
Dried single board is carried out to two-sided applying glue processing with urea-formaldehyde resin adhesive or phenolic resin adhesive, and resin added is 200-280g/m
2;
4, assembly
Veneer after applying glue is carried out to assembly, conventionally use odd-level veneer, the machine direction of adjacent veneer is orthogonal;
5, hot pressing
Slab is carried out to hot pressing, and hot pressing temperature is 105-120 ℃, and hot pressing time is 60-65s/mm, and hot pressing pressure is 1.0-1.5MPa, makes flame-retardant plywood, after cutting edge, sanding, obtains product of the present invention.
The specific embodiment
With specific embodiment, technical scheme of the present invention is described below, but protection scope of the present invention is not limited to this.
Embodiment 1
A production method for flame-retardant plywood, comprises the steps:
1) 1.5mm board using poplar board is put into the mixed solution (20 parts of APPs, 2 parts of 4A molecular sieves, 78 parts of water) of fire retardant and synergist, flooded after 2 hours and take out, equilibrium moisture content to 20%, is dried to moisture content 8% with drying box under field conditions (factors);
2) mix adhesive: get 100 parts of Lauxites, add 20 parts of flour in Lauxite, adding concentration is 1 part of 20% ammonium chloride, obtains mixing adhesive after stirring;
3) with above-mentioned epoxy glue, stick agent to veneer applying glue, resin added 280g/m
2.
4) veneer after applying glue is carried out to assembly, precompressed, hot pressing, cutting edge, sanding processing, obtain flame-retardant plywood.
Embodiment 2
A production method for flame-retardant plywood, comprises the steps:
1) 1.5mm board using poplar board is put into the mixed solution (20 parts of APPs, 4 parts of 4A molecular sieves, 76 parts of water) of fire retardant and synergist, flooded after 2 hours and take out, equilibrium moisture content to 20%, is dried to moisture content 8% with drying box under field conditions (factors);
2) mix adhesive: get 100 parts of Lauxites, add 20 parts of flour in Lauxite, adding concentration is 1 part of 20% ammonium chloride, obtains mixing adhesive after stirring;
3) with above-mentioned epoxy glue, stick agent to veneer applying glue, resin added 280g/m
2.
4) veneer after applying glue is carried out to assembly, precompressed, hot pressing, cutting edge, sanding processing, obtain flame-retardant plywood.
Reference examples 1
A production method for glued board, comprises the steps:
1) mix adhesive: get 100 parts of Lauxites, add 20 parts of flour in Lauxite, adding concentration is 1 part of 20% ammonium chloride, obtains mixing adhesive after stirring;
2) with above-mentioned epoxy glue, stick agent to the thick board using poplar board applying glue of 1.5mm, resin added 280g/m
2.
4) veneer after applying glue is carried out to assembly, precompressed, hot pressing, cutting edge, sanding processing, obtain glued board.
Reference examples 2
A production method for flame-retardant plywood, comprises the steps:
1) 1.5mm board using poplar board is put into retardant solution (20 parts of APPs, 80 parts of water), flooded after 2 hours and take out, equilibrium moisture content to 20%, is dried to moisture content 8% with drying box under field conditions (factors);
2) mix adhesive: get 100 parts of Lauxites, add 20 parts of flour in Lauxite, adding concentration is 1 part of 20% ammonium chloride, obtains mixing adhesive after stirring;
3) with above-mentioned epoxy glue, stick agent to veneer applying glue, resin added 280g/m
2.
4) veneer after applying glue is carried out to assembly, precompressed, hot pressing, cutting edge, sanding processing, obtain flame-retardant plywood.
According to ISO5660-1:2002 < < Reaction to fire experiment hot discharge, cigarette output and mass loss rate first: the method for HRR (Cone calorimeter) > > regulation, the glued board that present embodiment is made and reference examples are 35kW/m with taper calorimeter at hot irradiation power
2under condition, test, it is as shown in the table for result.
| Sample | HRR peak value (kW/m 2) |
| Embodiment 1 | 50.4 |
| Embodiment 2 | 18.4 |
| Reference examples 1 | 164.5 |
| Reference examples 2 | 82.8 |
Claims (10)
1. a flame-retardant plywood, its raw material comprises Wooden veneer, phosphor nitrogen combustion inhibitor, synergist and adhesive.
2. flame-retardant plywood according to claim 1, is characterized in that: described Wooden veneer: phosphor nitrogen combustion inhibitor: synergist: the oven dry weight percentage of adhesive is 100:10-20:1-8:7-15.
3. flame-retardant plywood according to claim 1 and 2, is characterized in that: described Wooden veneer be by softwood or broadleaf through rotary-cut or slicing, make the veneer that thickness is 0.1-5mm, moisture content is 8-12%.
4. flame-retardant plywood according to claim 1, is characterized in that: described phosphor nitrogen combustion inhibitor is the water-soluble APP of low polymerization degree.
5. flame-retardant plywood according to claim 1, is characterized in that: described synergist is molecular sieve, and its type is 4A.
6. flame-retardant plywood according to claim 1, is characterized in that: described adhesive is the mixture of one or more arbitrary proportions in urea-formaldehyde resin adhesive, cyanurotriamide modified urea resin adhesive, phenolic resin adhesive.
7. according to the production method of arbitrary described flame-retardant plywood in claim 1-6, it is characterized in that comprising the following steps:
(1) Wooden veneer is flooded to the mixed solution of phosphor nitrogen combustion inhibitor and synergist;
(2) dry to the Wooden veneer after step (1) processing;
(3) to the Wooden veneer applying glue after step (2) processing;
(4) veneer after step (3) is processed carries out assembly, colds pressing, hot pressing, cutting edge, sanding processes.
8. the production method of flame-retardant plywood according to claim 7, is characterized in that: the described phosphor nitrogen combustion inhibitor of step (1) is the water-soluble APP of low polymerization degree, and synergist is molecular sieve, and its type is 4A.
9. the production method of flame-retardant plywood according to claim 7, is characterized in that: the resin added that the described applying glue of step (3) is processed is 200-280g/m
2.
10. the production method of flame-retardant plywood according to claim 7, is characterized in that: the described hot pressing condition of step (4) is: 105-120 ℃, 1.0-1.5MPa, hot pressing time 60-65s/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310675755.7A CN103624843A (en) | 2013-12-13 | 2013-12-13 | Production method of flame-retardant veneer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310675755.7A CN103624843A (en) | 2013-12-13 | 2013-12-13 | Production method of flame-retardant veneer |
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| CN103624843A true CN103624843A (en) | 2014-03-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150299A (en) * | 2015-09-11 | 2015-12-16 | 李剑 | Method for improving flame retardancy of plywood |
| CN105500472A (en) * | 2015-11-24 | 2016-04-20 | 兰州科天环保节能科技有限公司 | Water-based flame-retardant plywood and production method thereof |
| CN108214730A (en) * | 2018-02-09 | 2018-06-29 | 广西艾尚嘉家居有限公司 | A kind of production method of environmental protection five-ply board |
| CN109732727A (en) * | 2018-11-27 | 2019-05-10 | 北京林业大学 | APP- multistage porous molecular sieve composite flame-retardant agent and the preparation method and application thereof |
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| CN1098976A (en) * | 1993-08-17 | 1995-02-22 | 北京市木材厂 | A kind of flame-retardant plywood and production method thereof |
| CN101412231A (en) * | 2008-11-10 | 2009-04-22 | 德华兔宝宝装饰新材股份有限公司 | Method for producing flame-retardant glued board |
| CN101476379A (en) * | 2008-01-03 | 2009-07-08 | 欧阳林 | Production method of environment-friendly floor cushion coat |
| CN103101085A (en) * | 2012-12-27 | 2013-05-15 | 廊坊华日家具股份有限公司 | Mesoporous molecular sieve modified anti-flaming solid wood panels and preparation method thereof |
-
2013
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| CN1098976A (en) * | 1993-08-17 | 1995-02-22 | 北京市木材厂 | A kind of flame-retardant plywood and production method thereof |
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| CN103101085A (en) * | 2012-12-27 | 2013-05-15 | 廊坊华日家具股份有限公司 | Mesoporous molecular sieve modified anti-flaming solid wood panels and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150299A (en) * | 2015-09-11 | 2015-12-16 | 李剑 | Method for improving flame retardancy of plywood |
| CN105500472A (en) * | 2015-11-24 | 2016-04-20 | 兰州科天环保节能科技有限公司 | Water-based flame-retardant plywood and production method thereof |
| CN108214730A (en) * | 2018-02-09 | 2018-06-29 | 广西艾尚嘉家居有限公司 | A kind of production method of environmental protection five-ply board |
| CN109732727A (en) * | 2018-11-27 | 2019-05-10 | 北京林业大学 | APP- multistage porous molecular sieve composite flame-retardant agent and the preparation method and application thereof |
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Application publication date: 20140312 |