CN103600381B - A kind of production method of bamboo wood composite flame-proof structural slab - Google Patents
A kind of production method of bamboo wood composite flame-proof structural slab Download PDFInfo
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- CN103600381B CN103600381B CN201310594928.2A CN201310594928A CN103600381B CN 103600381 B CN103600381 B CN 103600381B CN 201310594928 A CN201310594928 A CN 201310594928A CN 103600381 B CN103600381 B CN 103600381B
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Abstract
The present invention is the method adopting bamboo wood and fast growing wood to manufacture the rectangular composite construction board of a kind of fire-retardant bamboo wood, processing step divides 1) with width 5-18mm, length 5-18cm, thickness is the thin rectangular bamboo chip of 0.35-2.50mm and wood chip is unit 2) long narrow bamboo and wood sheet is dried to moisture content 8-10% after ultrasonic lixiviate; 3) pf resin of low molecular weight, resin added 8-15%; Display 10-15min after applying glue, after being dried to moisture content 6-8%, then execute boron bakelite resin, glue consumption 5-8%; 4) bamboo wood chip after applying glue drying is carried out in a certain proportion of layer according to product requirement or interlayer mixing is mated formation and is hot pressed into plate.Advantage: without the need to adopting special chemical fire retardant to carry out flame treatment to wooden bamboo wood, solves the problem that fire retardant reduces bonding strength and bulk strength.It is a kind of new builing structure flame-retardant board that the method produces product.The method for raw material, is conducive to the comprehensive utilization that bamboo producing region realizes bamboo wood industrial wood waste with the strip sheet of bamboo wood and fast growing wood.
Description
Technical field
What the present invention relates to is a kind of method adopting bamboo wood and fast growing wood to manufacture fire-retardant composite construction board, belongs to the wood-based plate manufacturing technology field in wood working industry.
Background technology
The demand for development product of wood base composite material is at raw material and functionally carry out integrated and compound, to meet the economy of product many-sided performance requirement and raw material coupling under application conditions.This is one of Main Trends of The Development paid close attention in current composite wooden material area research both at home and abroad.Along with the raising of China's constructional ornamental material and car and boat interior trim structure material fire protection requirement security, structural panel also requires the index request that must reach corresponding flame-retardant standard while meeting mechanical property.All can damage the performance of bamboo wood glue interface to a certain extent with the fire retardant process bamboo wood of routine or timber, thus reduce the bonding strength of sheet material, cause the decline of overall performance.And owing to lacking horizontal conducting tissue, the flame treatment of bamboo wood is difficult to be deep into cell membrane level.Therefore, both can be fire-retardant in the urgent need to developing one, the novel flame-retardant structural wood of the certain mechanical property of tool again.Low molecule phenolic resins is the Small molecular resin being easy to permeate, the certain anti-flammability of tool after solidification, but because of its molecular weight little, low being not suitable for of the degree of cross linking makees gummed matrix type adhesive, but can be used for the strengthening of bamboo wood cell membrane.And boron bakelite resin is the crosslinked resin that nearest modification is comparatively successful, anti-flammability is high, also can be used as wooden Bamboo adhesive, the product of phenolic aldehyde series is simultaneously, intermiscibility is good, the fire-retardant of cell membrane microscopic scale can be realized by low molecule dipping, strengthen cell membrane, crosslinked boron bakelite resin then can bear macroscopic view gummed and fire retardation, thus achieves working along both lines of fire-retardant and structure function simultaneously.Accordingly, research and design of the present invention bamboo wood and fast growing wood manufacture the manufacture method of the rectangular composite construction board of anti-flaming bamboo wood.
Summary of the invention
What the present invention proposed is a kind of method adopting bamboo wood and fast growing wood to manufacture the rectangular composite construction board of anti-flaming bamboo wood, its objective is and bamboo wood and fast growing wood are made easy-to-handle rectangular patch unit, by ultrasonic removal water extract, improve Surface Permeability, and then carry out cell membrane strengthening with pf resin of low molecular weight, again by the applying of boron bakelite resin, the compound structure for new residence plate with better fire resistance and structural mechanical property is made in hot pressing.The anti-flaming bamboo wood strip sheet composite plate of this technology manufacture both can be used for construction material, also can be used for the decorative substrate that flame-retardancy requirements is high, so that secondary is decorative faced, also can be used for the resistant to elevated temperatures sheet material of car and boat manufacture structure fire material and special occasions requirement.
Technical solution of the present invention comprises following processing step:
1) adopt and split, saw or dig that to process width be 5-18mm, length is 5-18cm, and thickness is the rectangular bamboo chip of 0.35-2.50mm and rectangular wood chip is the Component units of structural slab, and rectangular wood chip also can be formed by the cutting of rotary-cut waste single boards;
2) by above-mentioned rectangular bamboo chip, rectangular wood chip with bath raio 1: 10-1: 20, in supersonic cleaning machine, carry out flooding; Bath raio is too small, and ultrasonic uneven, cleaning dirty, bath raio is excessive, and the cavitation effect of rectangular bamboo chip and rectangular wood chip is bad; Ultrasonic power 800-1600w, sonication treatment time 4-6s, intermittent time 4-6s, total processing time 30-60min, supersonic frequency 20-35KHz.After ultrasonic washing lixiviate process, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-15%; Bamboo chip must go out starch through ultrasonic washing with lixiviate regardless of bamboo kind, and wood chip suitably adjusts ultrasonic technological parameter according to the content of the hot and cold water extract of fast-growing assortment: the rectangular wood chip 1) made fast-growing low-density diffuse porous wood can adopt 800w, processing time 6s; 2) 1000w can be adopted, processing time 5s to the rectangular wood chip that loose China fir low-density material is made; 3) the rectangular wood chip that more to the partially hard inclusion of material hardwood is made can adopt 1600w, processing time 4s, in case sonication treatment time is long or the intensity of the excessive reduction cell membrane of power;
3) adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue to dried rectangular bamboo chip and rectangular wood chip, resin added is the 8-15% of rectangular bamboo chip or rectangular wood chip oven dry weight; Need after glue spraying to display 10-15min; With Cluster Bamboo if cizu is for displaying after glue spraying during raw material, if but adopt impregnation, drain rear convection drying, to prevent Cluster Bamboo suction glue amount excessive, cause panel density excessive; Low temperature 50-60 DEG C is dried to moisture content 6-8%, prevents temperature too high low molecule phenolic resins hardened beforehand from losing activity, greatly improves product percent of pass; Rectangular bamboo chip after pf resin of low molecular weight glue spraying and the dried moisture content of rectangular wood chip also can be controlled in 12-14%, for follow-up powdery glue-applying technique;
4) adopt the boron bakelite resin of solid content 45 ± 5% to the rectangular bamboo chip of low-molecular-weight process and the applying glue of wood chip secondary, resin added is the 5-8% of rectangular bamboo chip and rectangular wood chip oven dry weight, and after applying glue, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-14%;
5) by 4) rectangular bamboo chip and rectangular wood chip carry out (Fig. 1) or interlayer mixing (Fig. 2, Fig. 3) in a certain proportion of layer according to product requirement after secondary applying glue drying.Three or five layers of oriented structure that bamboo wood is top layer, wood chip is sandwich layer can be adopted to mat formation when the anti-bending strength of Structure of need plate is higher, during orienting spreading, bamboo wood can improve the bending strength of sheet material on surface; When material is in length and breadth to when requiring relative equilibrium, directly bamboo chip and wood chip directly can be mixed according to weight ratio and to mat formation at random or vertical orientation is mated formation;
6) above-mentioned shaping slab of mating formation is pressed into have fire-retardant and meet mechanical property requirements bamboo wood rectangular composite construction board.
Advantage of the present invention: adopt ultrasonic process remove the hydrotrope and improve rectangular bamboo chip, rectangular wood chip Surface Permeability to bamboo wood strip sheet, is beneficial to the cell membrane of Small molecular phenolic resins fire-retardant and strengthen, improves greatly from microstructure layer.The intensity of structural slab and anti-flammability, adopt fire-retardant boron bakelite resin as binding agent simultaneously, while improving the structural mechanical property of plate, anti-flammability is greatly improved.The product strength that the method is produced and anti-flammability are all better than the sheet material of conventional flame retardants process.The method overcome the problem of inorganic combustion inhibitor or other fire retardant and adhesive poor compatibility, better than the anti-flammability of existing flame retarding construction plate, intensity is larger, longer service life.The method is that construction material and car and boat decoration manufacturing industry provide new technology and the longer product of durability.
Accompanying drawing explanation
Fig. 1 is the even hybrid structure schematic diagram of rectangular bamboo chip and rectangular wood chip;
Fig. 2 is bamboo chip hybrid structure form schematic diagram between upper and lower surface enhancement layer;
Fig. 3 is bamboo chip on surface, top and bottom, and sandwich layer be bamboo wood strip sheet interlaminar hybrid composite bed between structural representation.
Detailed description of the invention
Embodiment 1:
1) adopting tangential mao bamboon thin bamboo strip to process width is 5-18mm, length is 5-18cm, thickness is the thin rectangular bamboo chip of 0.55-1.00mm and the rectangular wood chip of poplar of equivalent specifications is the Component units of structural slab, and rectangular wood chip also can be formed by the cutting of poplar rotary-cut waste single boards;
2) above-mentioned bamboo chip, wood chip are carried out flooding with bath raio 1: 10, ultrasonic processing technique in supersonic cleaning machine: ultrasonic power 1600W, sonication treatment time 4s, intermittent time 4s, total processing time 30min, supersonic frequency 20-25KHz.After ultrasonic washing lixiviate process, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-15%.
3) adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue to dried rectangular bamboo chip and rectangular wood chip, resin added is the 8-15% of rectangular bamboo chip or rectangular wood chip oven dry weight; Display 10-12min after adopting glue spraying, be beneficial to glue infiltration, then low temperature 50-60 DEG C is dried to moisture content 6-8%;
4) boron bakelite resin of solid content 45 ± 5% is adopted to carry out secondary applying glue to the rectangular bamboo chip of low-molecular-weight process and rectangular wood chip, glue amount is the 5-8% of rectangular bamboo chip and rectangular wood chip oven dry weight, and after applying glue, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-14%;
5) by 4) rectangular bamboo chip 1 and rectangular wood chip 2 are prepared burden according to 1: 1 ratio after applying glue drying, and carry out Homogeneous phase mixing in layer, structure is top layer portrait orientation, and sandwich layer is transversal orientation, sees Fig. 1;
6) above-mentioned shaping slab of mating formation is hot pressed into plate: pressure 3.5-4.0MPa, time 0.45mm/min, temperature 180 ± 5 DEG C.
The physical and mechanical property of plate is as follows:
Size: 1220 × 2440 × 10-22mm
Averag density: 0.65-0.88g/cm
3
MOR
//：≥50MPa
MOR
⊥：≥18MPa
MOE
//：≥5500MPa
MOE
⊥：≥1500MPa
Fire resistance: more than GB B2 level.
Embodiment 2: the composite plate applying the boron bakelite resin of powdery
Step 1), 2) the same;
Step 3) adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue to dried rectangular bamboo chip and rectangular wood chip, glue amount is the 8-15% of wood or bamboo chip oven dry weight; Display 10-15min after adopting glue spraying, at 50-60 DEG C of temperature, be dried to moisture content 12-14%;
Step 4) adopt order number to be 80-200 object powdery boron bakelite resin, glue amount is the 5-8% of rectangular wood chip, rectangular bamboo chip oven dry weight, and after powder spray applying glue, rectangular bamboo chip and rectangular wood chip moisture content are 12-14%;
Step 5) by step 4) rectangular bamboo chip 1 is mated formation for the upper layer of plate after applying glue drying, sandwich layer is rectangular wood chip 2, and structure is top layer portrait orientation, and sandwich layer is random distribution; Bamboo chip and wood chip are prepared burden in 2: 1 ratios, see Fig. 2.
Step 6) above-mentioned shaping slab of mating formation is hot pressed into plate: pressure 4.0-4.5MPa, time 0.55mm/min, temperature 190 ± 5 DEG C.
Embodiment 3:
Step 1), 2) the same;
Step 3) adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue to dried rectangular bamboo chip and rectangular wood chip, glue amount is the 8-15% of rectangular bamboo chip and rectangular wood chip oven dry weight; Display 10-15min after applying glue, then low temperature 50-60 DEG C is dried to moisture content 12-14%;
Step 4) adopt order number to be 80-200 object powdery boron bakelite resin, glue amount is the 5-8% of rectangular bamboo chip and rectangular wood chip oven dry weight, and after applying glue, rectangular bamboo chip or rectangular wood chip are dried to moisture content 12-14% respectively;
Step 5) rectangular bamboo chip and rectangular wood chip are prepared burden in 1: 2 ratio; Structure adopts rectangular bamboo chip 1 to be upper and lower skin-material, and core material is that rectangular wood chip 1 and rectangular wood chip 2 carry out assembly with 1: 1 mixing, and top layer is directed, and sandwich layer is random, sees Fig. 3;
6) above-mentioned shaping slab of mating formation is hot pressed into plate; Pressure 4.0-4.5MPa, time 0.55mm/min, temperature 200 ± 5 DEG C.
Embodiment 4:
1) adopting radial cizu thin bamboo strip to process wall thickness is width, and length is 5-18cm, and thickness is the rectangular bamboo chip of radial direction of 1.05-2.00mm and the rectangular wood chip of Eucalyptus of equivalent specifications is the Component units of structural slab;
2) above-mentioned bamboo chip, wood chip are carried out flooding with bath raio 1: 20 in supersonic cleaning machine, cizu ultrasonic processing technique: ultrasonic power 1400W, sonication treatment time 4s, intermittent time 5s, total processing time 30min, supersonic frequency 20-25KHz.Eucalyptus wood chip ultrasonic processing technique: ultrasonic power 1600W, sonication treatment time 6s, intermittent time 5s, total processing time 30min, supersonic frequency 25-30KHz.After ultrasonic washing lixiviate process, bamboo wood chip is dried to moisture content 12-15%;
3) adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue to dried rectangular bamboo chip and rectangular wood chip, resin added is 12 ± 2% of rectangular wood chip or rectangular bamboo chip oven dry weight; Cizu impregnation took out after 1-3 minute, drained glue; Display 10-15min after the rectangular wood chip glue spraying of Eucalyptus, be beneficial to glue infiltration, then rectangular for cizu bamboo chip and the rectangular wood chip of Eucalyptus be dried to moisture content 6-8% at 50-60 DEG C of temperature;
4) the rectangular bamboo chip of the cizu of boron bakelite resin to low-molecular-weight process of solid content 45 ± 5% and the rectangular wood chip of Eucalyptus is adopted to carry out secondary applying glue, glue amount is the 7-8% of rectangular bamboo chip and rectangular wood chip oven dry weight, and after applying glue, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-14%;
5) by 4) rectangular bamboo chip and rectangular wood chip, in the direct mix of 1: 2 ratio, are mated formation at random after applying glue drying;
6) above-mentioned shaping slab of mating formation is hot pressed into plate: pressure 3.5-4.0MPa, time 0.45mm/min, temperature 180 ± 5 DEG C.
Claims (8)
1. adopt bamboo wood and fast growing wood strip sheet to manufacture the method for fire-retardant composite construction board, its feature comprises following processing step:
1) take width as 5-18mm, length is 5-18cm, and thickness is the thin rectangular bamboo chip of 0.35-2.50mm and rectangular wood chip is the Component units of structural slab;
2) above-mentioned rectangular bamboo chip, rectangular wood chip are dried to moisture content 12-15% respectively through after ultrasonic washing lixiviate process; Ultrasonic process bath raio 1: 10-1: 20; Ultrasonic power 800-1600w, sonication treatment time 4-6s, intermittent time 4-6s, total processing time 30-60min, supersonic frequency 20-35KHz;
3) to 2) dried rectangular bamboo chip, rectangular wood chip, adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue, resin added is the 8-15% of rectangular bamboo chip or rectangular wood chip oven dry weight; Display 10-15min after applying glue, at 50-60 DEG C of temperature, be dried to moisture content 6-8% or 12-14%;
4) to 3) in again separately spray fire-retardant boron bakelite resin through the dried rectangular bamboo chip of pf resin of low molecular weight applying glue and rectangular wood chip, resin added is the 5-8% of rectangular bamboo chip or rectangular wood chip oven dry weight, and after secondary applying glue, rectangular bamboo chip and rectangular wood chip are dried to moisture content 12-14%;
5) by 4) the dried rectangular bamboo chip of secondary applying glue and rectangular wood chip carry out in layer by weight 1: 4-4: 1 or interlayer mixing is mated formation, adopt rectangular bamboo chip to be top layer when the anti-bending strength of Structure of need plate is higher, rectangular wood chip is that three or five layers of oriented structure of sandwich layer are mated formation; When material is in length and breadth to when requiring relative equilibrium, to mat formation at random after directly rectangular bamboo chip and rectangular wood chip directly being mixed according to weight ratio or vertical orientation is mated formation;
6) above-mentioned slab hot pressing of mating formation shaping is made have fire-retardant and meet the rectangular bamboo wood chip composite construction board of mechanical property requirements.
2. according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 1) in rectangular bamboo chip be tangential strip sheet through being processed into or the rectangular bamboo chip of radial direction that is width with bamboo wood wall thickness, tangential rectangular bamboo chip goes blue or green de-etiolation; Radial rectangular bamboo chip does not go blue or green de-etiolation.
3., according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 2) in ultrasonic washing lixiviate process, rectangular bamboo chip must go out starch through ultrasonic washing with lixiviate regardless of bamboo kind; Rectangular wood chip need suitably adjust ultrasonic technological parameter according to the content of the hot and cold water extract of fast-growing assortment: a) can adopt 800w, processing time 6s to the fast-growing rectangular wood chip that hole low-density material makes that falls apart; B) 1000w can be adopted, processing time 5s to the rectangular wood chip that loose China fir low-density material is made; C) the rectangular wood chip that more to the partially hard inclusion of material hardwood is made can adopt 1600w, processing time 4s.
4. according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 3) in adopt mean molecule quantity to be that the pf resin of low molecular weight of 350-450 separates applying glue, resin application methods is glue spraying or impregnation, during with the Scattered bamboos of intermediate density for raw material, display 10-15min after applying glue, at 50-60 DEG C of temperature, be dried to moisture content 6-8%; When the rectangular bamboo chip after pf resin of low molecular weight applying glue and the dry whole moisture control of rectangular wood chip are at 12-14%, then the secondary applying glue of next step correspondingly adopts the solid-state rubber powder applying glue of boron bakelite resin.
5. according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 4) in fire-retardant boron bakelite resin, refer to that solids content is the alcohol dissolubility flame-retardant phenolic resin of 45 ± 5%, also the boron bakelite resin of 80-200 order powdery can be adopted to carry out powdery applying glue, during powdery applying glue, need the moisture content through the dried rectangular bamboo chip of pf resin of low molecular weight applying glue and rectangular wood chip to remain on 12-14%.
6. according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 5) in can using rectangular bamboo chip or rectangular wood chip as upper layer when mating formation, or do layer after bamboo chip and wood chip mixing; Top layer and sandwich layer adopt layering or homogeneous texture, random or orienting spreading.
7., according to adopting bamboo wood and fast growing wood strip sheet to manufacture fire-retardant composite construction board method in claim 1, it is characterized in that: described step 6) the middle berth slab of dressing up type is made through hot pressing has fire-retardant and meet the rectangular composite construction board of bamboo wood of mechanical property requirements; Hot pressing parameters is pressure 3.5-5.5MPa, time 0.35-0.80min/mm, temperature 180-220 DEG C.
8. manufacture according to the bamboo wood of one of claim 1-7 and fast growing wood strip sheet the product that fire-retardant composite construction board method manufactures, it is characterized in that with bamboo wood and long narrow of fast growing wood for construction unit, after the process of different molecular weight phenolic resins, impose the fire-retardant composite construction board of boron bakelite resin compacting again, its product comprises following several version:
1) bamboo chip is top layer, and wood chip is three layers of parallel orientation structure of sandwich layer;
2) bamboo chip is top layer, and wood chip is three layers of vertical orientation structure of sandwich layer;
3) top layer bamboo chip portrait orientation, sandwich layer is that three layers of orientation after the mixing of bamboo wood chip are parallel to structure;
4) top layer bamboo chip portrait orientation, sandwich layer is three layers of vertical orientation structure of bamboo wood chip mixing;
5) wood chip is top layer, and bamboo chip is three layers of parallel orientation structure of sandwich layer;
6) wood chip is top layer, and bamboo chip is three layers of vertical orientation structure of sandwich layer;
7) structure of the rear random alignment of bamboo wood chip mixing;
8) after bamboo chip and wood chip mix, then hybrid structure that is parallel or vertical orientation.
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| CN201310594928.2A CN103600381B (en) | 2013-11-25 | 2013-11-25 | A kind of production method of bamboo wood composite flame-proof structural slab |
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| CN201310594928.2A CN103600381B (en) | 2013-11-25 | 2013-11-25 | A kind of production method of bamboo wood composite flame-proof structural slab |
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| CN103600381B true CN103600381B (en) | 2016-01-20 |
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| CN105666631A (en) * | 2016-02-05 | 2016-06-15 | 广西生态工程职业技术学院 | Gluing method for recombined bamboo for outdoor use |
| CN107972143A (en) * | 2017-10-19 | 2018-05-01 | 姜向军 | A kind of preparation method of tension bamboo plywood |
| CN109591134B (en) * | 2019-01-10 | 2021-06-08 | 南昌汇凯家具有限公司 | Wood flame-retardant dipping treatment process |
| CN110341004A (en) * | 2019-07-15 | 2019-10-18 | 天津海源汇科技有限公司 | A kind of application technique of glued board plant fiber adhesive |
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| US6713411B2 (en) * | 1998-04-20 | 2004-03-30 | Precision Fabric Group | Chemical resistant, water and dry particle impervious, flame resistant laminate |
| DE10107501A1 (en) * | 2001-02-15 | 2002-08-29 | Ihd Inst Fuer Holztechnologie | Impregnating wood and other lignocellulosic materials comprises using an aqueous enzyme solution and ultrasonicating |
| CN1287963C (en) * | 2002-12-13 | 2006-12-06 | 陕西理工学院 | Wood fire-retardant treating technology |
| CN101879739A (en) * | 2010-06-24 | 2010-11-10 | 郭明辉 | Manufacturing method for environmental-friendly fire-retardant fiber board |
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