CN103231424A - Hollow bamboo based fiber composite structure materials and production method thereof - Google Patents
Hollow bamboo based fiber composite structure materials and production method thereof Download PDFInfo
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- CN103231424A CN103231424A CN2013101460277A CN201310146027A CN103231424A CN 103231424 A CN103231424 A CN 103231424A CN 2013101460277 A CN2013101460277 A CN 2013101460277A CN 201310146027 A CN201310146027 A CN 201310146027A CN 103231424 A CN103231424 A CN 103231424A
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 140
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 140
- 241001330002 Bambuseae Species 0.000 title claims abstract description 140
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 140
- 239000011425 bamboo Substances 0.000 title claims abstract description 140
- 239000002131 composite material Substances 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 title claims abstract description 70
- 239000000835 fiber Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 56
- 230000001070 adhesive effect Effects 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 36
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical group 0.000 claims description 52
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 42
- 230000007480 spreading Effects 0.000 claims description 37
- 238000003892 spreading Methods 0.000 claims description 37
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 150000002148 esters Chemical class 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 17
- 238000005470 impregnation Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 239000011087 paperboard Substances 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000008521 reorganization Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 abstract description 14
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- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
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- 230000035699 permeability Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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Abstract
The invention relates to hollow bamboo based fiber composite structure materials and also provides a production method thereof. The hollow bamboo based fiber composite structure materials are produced with bamboo wood, adhesives and veneers as raw materials and with fiber separation, one-step restructuring, secondary compounding, bonding interface structure optimization and the like as methods. According to the hollow bamboo based fiber composite structure materials and the production method, technological bottlenecks that the performance of bamboo based fiber composite materials is surplus and poor gluing in a secondary compounding process causes strength attenuation and the like to block the bamboo based fiber composite materials being used in structural wood are solved. The hollow bamboo based fiber composite structure materials are capable of being used for manufacturing beams, columns, furniture, large-sized outdoor floors and the like.
Description
Technical field
The invention belongs to wood-based plate and manufacturing technology field thereof in the wood-based plate industry, be particularly useful for the mechanical property requirements height, building and engineering structure materials such as the beam that specification is big, post, furniture and floor.
Background technology
Bamboo base fibrous composite be with bamboo wood through discongesting form fibrillatable bamboo veneer after, through super-dry, impregnation, a kind of novel building and the engineering structure material that process of operations such as dry, assembly and gummed again.The MOR of this material can reach more than the 350MPa, hot strength can reach more than the 360MPa, compressive strength can reach more than the 140MPa, and elastic modelling quantity can reach 27GPa[in Wen Ji. the progress [J] of China's high-performance bamboo base fibrous composite. and timber industry, 2011,25 (1): 6-8,29], have good physical and mechanical property, bamboo base fibrous composite is directly used in makes beam, post, furniture and floor etc., often cause the intensity surplus, cause waste; In the process of forming, the density of this material reaches 1.05～1.30g/cm
3, because the material deadweight is bigger, causes easily and use inconvenience.
Secondly, the production technology of bamboo base fibrous composite mainly is divided into two big classes: a class is cold forming, heat curing process, is called for short cold-press process; The 2nd, use for reference wood-based plate traditional hot compression technology, the bamboo base fibrous composite heat pressing process of formation.Owing to be subjected to the restriction of the specification of cold press and hot press equipment, at present, the specification of bamboo base fibrous composite is all less, and the bamboo base fibrous composite square stock specification of producing as cold-press process (long * wide * thick) commonly used is: 193cm * 10.5cm * 15.0cm and 200cm * 14.5cm * 15.0cm; The bamboo base fibrous composite stock size (long * wide * thick) that heat pressing process is produced is: the cm of 244cm * 122cm * (1.5-4), maximum breadth also can only reach 500cm * 120cm * 5cm (Yu Wenji, China's bamboo base fibrous composite industry development present situation and trend analysis, timber industry, 2012,26 (1): 11-14).Such specification is difficult to satisfy the dimensional requirement on structural wood such as beam, post, large-scale furniture and big specification floor.
Moreover the structural wood of big specification adopts vertical spreading by the material of small dimension usually, laterally pieces together wide and the compound splicing of recombinating forms.Glued joint bad meeting and cause the decline of plate property, glued joint common defect type and comprise: come unstuck, crack, space, bondline thickness variation, solidify not exclusively and surface preparation defective etc., wherein, come unstuck, crack and surface preparation defective be main.The principal element that influences adhesive bonding of composites intensity has: the influence of factors such as the material category of connected piece, the ratio of rigidity of connected piece and thermal coefficient of expansion, make whenever possible by the rigidity approximately equal of bonded part as far as possible, close (the beneficial Xiao Su with the moisture expantion coefficient of thermal coefficient of expansion, the composite handbook, Chemical Industry Press, 2009).
Chinese patent 201010243351.7,201020279829.7,201020279815.5 provide a kind of employing undersized log to make undersized log recombination structure material and manufacture method thereof by finger or mitered, adopted this method undersized log can be processed into the recombination structure material of big specification.But the glue-line that this technology forms when secondary gluing, its glue performance instability has certain variability, some sheet material glue-lines phenomenon such as may occur ftractureing, come unglued; Problems such as bonding strength is low, the physical mechanics property loss of energy is big then may appear in other sheet materials.By analyzing, the main cause that causes above-mentioned phenomenon and problem is that spot gluing is bad.
According to previous research: the prerequisite that forms good splicing is the adhesive molecule and gluedd joint material (timber) and can fully contact and effective wetting (Gu Jiyou, adhesive and coating, China Forest publishing house, 1999).Bamboo base fibrous composite is that a kind of (the cold-press method briquetting pressure is about 60MPa at bigger pressure by porous natural material timber or bamboo wood; The pressure sintering briquetting pressure is 4～6MPa) effect compacted unders, and the density of bamboo base fibrous composite is generally greater than 1.0g/cm
3When environment temperature and humidity variation, distortion such as easement, crosswise concaving, warpage can take place, can produce (Yu Wenji, China's bamboo base fibrous composite industry development present situation and trend analysis, timber industry such as the phenomenon of jumping silk and cracking when serious, 2012,26 (1): 11-14), even in process, adopt sanding to handle, also be difficult to obtain smooth cemented surface; Secondly, in the manufacture process of bamboo base fibrous composite, more even for adhesive is distributed, usually adopt dipping method, bamboo bundle and wood bundle are by behind the impregnation, and one deck adhesive has all been adhered on its surface, after the curing, formed the insoluble not glue-line of molten densification of one deck, surface wettability descends; Moreover, bamboo base fibrous composite intensity height, hardness is big, be difficult to compressed, but be subjected to the influence of traditional thinking, when selecting bonded part, select the rigidity approximately equal as far as possible, the material that thermal expansion and moisture expantion are close, usually not will consider introducing the third material except adhesive, therefore, coarse surface, being difficult to the splicing face that compresses and bad wetability is easy to generate in the post forming process and comes unstuck, the crack, the space, the bad problem of bamboo base fibrous composite spot gluing of adhesive defects, particularly high rigidity such as bondline thickness variation fails to be solved effectively all the time.
Summary of the invention
The objective of the invention is to improve the deficiency in the existing processes technology, hollow bamboo base fiber compound structure material is provided, make its physical and mechanical property satisfy the structural wood performance demands.
For achieving the above object, the present invention takes following technical scheme:
The invention provides a kind of hollow bamboo base fiber compound structure material, two front plate of its bag, two side panels, veneer and adhesives, it is characterized in that: two front plate and two side panels compose the hollow square column that the cross section is square or rectangular mutually, and described front plate and side panel are bamboo base fibrous composite; Between two front plate of described mutual gummed and the side panel junction one deck veneer is set, the thickness of described veneer is 0.1-1.5mm; Be provided with adhesive layer between bamboo base fibrous composite and the veneer, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive; The weld of two front plate of described mutual gummed and two side panels is an angle of 90 degrees or miter angle.
Described a kind of hollow bamboo base fiber compound structure material, it is characterized in that: the front plate of hollow bamboo base fiber compound structure material and side panel are to be formed through vertical spreading by bamboo base fibrous composite, vertically the composition surface of spreading is provided with adhesive layer, and used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
Described a kind of hollow bamboo base fiber compound structure material, also include cardboard, it is characterized in that: the bamboo base fibrous composite of described vertical spreading is provided with a layer paperboard between the composition surface of vertical spreading, be provided with adhesive layer between bamboo base fibrous composite and the cardboard, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
Described hollow bamboo base fiber compound structure material, it is characterized in that: described spreading is finger spreading or mitered spreading.
The invention provides a kind of manufacture method of hollow bamboo base fiber compound structure material, comprise following workshop section: (one) raw material is prepared, (two) compound, (three) post-processed of recombinating, and it is characterized in that:
(1) raw material is prepared, and comprises the preparation of bamboo base fibrous composite, veneer preparation and adhesive allotment:
(1) bamboo base fibrous composite is prepared, by discongest, drying, impregnation, drying, gummed, maintenance, cutting edge, saw cut and sanding workshop section again, and bamboo processing is become the basic fibrous composite of specification bamboo; Be impregnating phenolic resin at the used adhesive of impregnation operation;
(2) certain thickness bamboo base fibrous composite is cut into 4 blocks of same widths bamboo base fibrous composite laths, the inclined-plane of miter angle or the right angle face of an angle of 90 degrees are cut sth. askew in the lath both sides of each bamboo base fibrous composite, as two front plate and two side panels;
(3) veneer is prepared, and by rotary-cut, drying, cutting edge workshop section, timber is processed into the veneer that thickness is 0.1-1.5mm; Veneer is prepared, and by rotary-cut, drying, cutting edge workshop section, timber is processed into the veneer that thickness is 0.1-1.5mm; Glued joint if weld is pressed miter angle, it is 1.5 times of the bamboo base fibrous composite thickness described in the step (2) that veneer is cut into width; Glued joint if weld is pressed an angle of 90 degrees, it is 1.1 times of the bamboo base fibrous composite thickness described in the step (2) that veneer is cut into width;
(4) adhesive allotment, with the host of the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive and curing agent according to 100: (10-20) ratio is evenly mixed;
(2) reorganization is compound
Described veneer upper and lower surface is coated the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive, described two front plate and two side panels are being glued together the junction mutually by being the combination of miter angle or an angle of 90 degrees, through composing the hollow square column that the cross section is square or rectangular; Two front plate of described mutual gummed and side panel arrange one deck veneer between connecting.
(3) post-processed
With described hollow bamboo base fiber compound structure material slab, hollow bamboo base fiber compound structure material is processed in workshop sections such as process cutting edge, saw cut, sanding.
The manufacture method of described hollow bamboo base fiber compound structure material, comprise following vertical spreading workshop section, it is characterized in that: described specification bamboo base fibrous composite two ends are adopted be machined into finger face or miter, the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive after finger face or miter are coated allotment again made the bamboo base fibrous composite of vertical spreading through vertical finger or mitered.
The manufacture method of described hollow bamboo base fiber compound structure material, it is characterized in that: in described vertical spreading workshop section, the bamboo base fibrous composite of described vertical spreading is provided with a layer paperboard between the composition surface of vertical spreading, be provided with adhesive layer between bamboo base fibrous composite and the cardboard, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
The manufacture method of described hollow bamboo base fiber compound structure material, it is characterized in that: in the mitered operation, the thickness at mitered position and inclined-plane ratio are 1: 10-1: 20.
Described hollow bamboo base fiber compound structure material, it is characterized in that: in the finger operation, the box pin joint parameter: the long 8mm-45mm of tooth, tooth top width 0.5mm-20mm, tooth pitch 3mm-20mm, tooth refer to gradient 1/6-1/9.
Hollow bamboo base fiber compound structure material provided by the invention adopts the hollow square column structure, has reduced the density of material significantly, and production technology is simple; Reduce cost; The ratio of strength to weight is big.
In addition, between the big bamboo base fibrous composite of hardness height, strength and stiffness, but the compressible deformation of one deck is set, thickness 0.1-1.5mm veneer veneer, this splicing face structural design, but good wetability, permeability, gummed and the characteristics such as compressible and deformation of veneer have been taken full advantage of, utilize veneer veneer deformation behavior, can fill up between the big bamboo base fibrous composite of hardness height, strength and stiffness because the uneven slit that forms of cemented surface effectively, thereby increase effective cemented surface; Utilize the good wetability of veneer veneer and gummed property, can form good cemented surface with bamboo base fibrous composite, improve glue performance; When secondary gluing, utilize permeability and the compression performance of veneer, under the effect of exerting pressure, make veneer veneer compression compact, simultaneously, the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive can be penetrated in the veneer veneer fully, with the veneer veneer gummed reaction take place, thereby form the compressed wood close with bamboo base fibrous composite performance.This splicing face structural design, utilized the characteristic of bamboo base fibrous composite and veneer veneer dexterously, make big specification bamboo base fibrous composite bonding layer behind the gummed meet the rigidity approximately equal of bonded part, the traditional classical splicing face gummed theory that thermal expansion and moisture expantion are close has solved adhesive defects such as bamboo base fibrous composite comes unstuck, crack, space, bondline thickness variation again.
Hollow bamboo base fiber compound structure material provided by the invention is provided with a layer paperboard between the composition surface of vertical spreading when vertical spreading, cardboard is basic identical in the effect of weld and above-mentioned veneer veneer, repeats no more here.Why during at vertical spreading, select cardboard, reason is as follows: compare with the veneer veneer, but except good wetability, permeability, gummed and characteristics such as compressible and deformation, flexibility and the plasticity of cardboard are better.Usually finger face and miter are special-shaped curved, and cardboard can design according to the shape of finger face and miter, thereby the splicing face of making is more identical, can reduce to greatest extent come unstuck, adhesive defects such as crack, space, bondline thickness variation.
Hollow bamboo base fiber compound structure material provided by the invention is in vertical spreading and reorganization recombination process, adopt the namely two component isocyanate adhesives of cold curing adhesive or resorcinol adhesive, can be compound in length and thickness direction reorganization according to the needs of target product, satisfy the large-sized specification requirement of structural wood.
Hollow bamboo base fiber compound structure material provided by the invention, in bamboo base fibrous composite manufacture process, select for use impregnating phenolic resin or dipping to use Lauxite, make bamboo bundle or wood bundle reach even impregnation, thereby obtain the bamboo base fibrous composite of stable performance.
The invention will be further described below in conjunction with the drawings and specific embodiments, is not limitation of the present invention, every any this area of carrying out according to the disclosure of invention be equal to replacement, all belong to protection scope of the present invention.
Description of drawings
Fig. 1 bamboo base fibrous composite finger face
Fig. 2 cardboard finger face
Fig. 3 bamboo base fibrous composite finger spreading
Bamboo base fibrous composite behind Fig. 4 finger spreading
Fig. 5 veneer
Fig. 6 weld is the hollow bamboo base of an angle of 90 degrees fiber compound structure material slab
Fig. 7 weld is the hollow bamboo base of an angle of 90 degrees fiber compound structure material (profile)
Fig. 8 weld is the hollow bamboo base of an angle of 90 degrees fiber compound structure material
Fig. 9 bamboo base fibrous composite oblique section
Figure 10 cardboard oblique section
Figure 11 bamboo base fibrous composite mitered spreading
Bamboo base fibrous composite behind Figure 12 mitered spreading
Figure 13 weld is the hollow bamboo base of miter angle fiber compound structure material slab
Figure 14 weld is the hollow bamboo base of miter angle fiber compound structure material (profile)
Figure 15 weld is the hollow bamboo base of miter angle fiber compound structure material
The specific embodiment
Embodiment 1: weld is the hollow bamboo base of an angle of 90 degrees fiber compound structure material
The hollow bamboo base fiber compound structure material of exemplary embodiments of the present invention, it comprises bamboo base fibrous composite (1), cardboard (2), veneer (3) and the adhesive (not marking among the figure) of vertical finger spreading, as shown in Figure 8, it is the square hollow square column that two front plate and two side panels compose the cross section mutually, and front plate (11) and side panel (12) are bamboo base fibrous composite; Glue together between two front plate and the side panel junction one deck veneer (3) is set, the thickness of veneer (3) is 1.2mm; Be provided with adhesive layer between bamboo base fibrous composite (1) and the veneer (3), used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive; The weld of gummed two front plate (11) and side panel (12) is an angle of 90 degrees mutually.
The hollow bamboo base of the present invention fiber compound structure material manufacture method typical case implementation step is as follows:
1, by discongest, drying, impregnation, drying, gummed, maintenance, cutting edge, saw cut and sanding workshop section again, bamboo processing are become (long * wide * thick) be: the bamboo base fibrous composite of 220cm * 20cm * 3.0cm; The adhesive used in the impregnation operation is impregnating phenolic resin, in the hot pressing process, adopts pressure sintering to produce bamboo base fibrous composite, belongs to prior art;
2, above-mentioned bamboo base fibrous composite is milled into as shown in Figure 1 finger joint teeth by the mill teeth machine, the long 25mm of tooth, tooth top width 10mm, tooth pitch 20mm, tooth refer to gradient 1/8.
3, take by weighing resorcinol gluing agent host and curing agent according to 100: 15 ratios, mix, after stirring, form host and the agent of the uniform resorcinol gluing of curing agent;
4, cardboard is processed into as shown in Figure 2 dentalation, the long 25mm of tooth, tooth top width 10mm, tooth pitch 20mm, tooth refer to gradient 1/8.
5, the resorcinol gluing agent after the finger face is coated with the above allotment, glue-spread is 300g/m
2, or according to the area a m before the cardboard processing
2, adopt the impregnation mode, the cardboard finger is entered in the adhesive, impregnation resin content is (300 * a) g; According to assembly shown in Figure 3, adopt two ends to overstock to the centre sheet material behind the assembly base of the bamboo behind gluing fibrous composite finger plate, the finger place is combined closely, the sheet material behind the finger spreading as shown in Figure 4.
6, by rotary-cut, drying, cutting edge workshop section, it is 33cm that timber is processed into width, and thickness is the veneer bar of 1.0mm, as shown in Figure 5;
7, the resorcinol gluing agent after veneer is coated allotment, glue-spread is 300g/m
2
8, described two front plate and two side panels are being glued together the junction mutually by being an angle of 90 degrees combination, two front plate of gummed and side panel arrange one deck veneer between connecting mutually, by assembly shown in Figure 6, are the square or rectangular hollow square column through composing the cross section.
9, with described hollow bamboo base fiber compound structure material slab, hollow bamboo base fiber compound structure material is processed into as shown in Figure 7 and Figure 8 in workshop sections such as process cutting edge, saw cut, sanding.
Embodiment 2: weld is the hollow bamboo base of miter angle fiber compound structure material
The hollow bamboo base fiber compound structure material of exemplary embodiments of the present invention, it comprises bamboo base fibrous composite (1), cardboard (2), veneer (3) and the adhesive (not marking among the figure) of vertical mitered spreading, as shown in figure 15, it is the square or rectangular hollow square column that two front plate and two side panels compose the cross section mutually, and front plate (11) and side panel (12) are bamboo base fibrous composite; Glue together between two front plate and the side panel junction one deck veneer (3) is set, the thickness of veneer (3) is 1.0mm; Be provided with adhesive layer between bamboo base fibrous composite (1) and the veneer (3), used adhesive is the aquosity polymer isocyanic ester adhesive; The weld of gummed two front plate (11) and side panel (12) is miter angle mutually.
The hollow bamboo base of the present invention fiber compound structure material manufacture method typical case implementation step is as follows:
1, by discongest, drying, impregnation, drying, gummed, maintenance, cutting edge, saw cut and sanding workshop section again, timber is processed into (long * wide * thick) to be: the bamboo base fibrous composite of 180cm * 140cm * 4cm; The adhesive used in the impregnation operation is impregnating phenolic resin, in gluing technique, adopts cold-press method, belongs to prior art;
2, the both sides of above-mentioned bamboo base fibrous composite are cut sth. askew into the inclined-plane of miter angle;
3, above-mentioned bamboo base fibrous composite two ends are sawn into as shown in Figure 9 oblique section, the thickness at mitered position and chamfer length ratio are 1: 10;
4, take by weighing host and the curing agent of water-based isocyanate adhesive, mixing and stirring according to 100: 18 ratios;
5, by being processed into ramp structure as shown in figure 10, the thickness at mitered position and chamfer length ratio are 1: 10 with cardboard;
6, the water-based isocyanate adhesive after miter is coated with the above allotment, glue-spread is 250g/m
2, or according to the area am of cardboard miter
2, adopt the impregnation mode, cardboard is immersed in the adhesive, impregnation resin content is (250 * a) g; According to assembly shown in Figure 11, adopt two ends to overstock to the centre sheet material behind the assembly base of the bamboo behind gluing fibrous composite, the mitered place is combined closely, the sheet material behind the mitered spreading as shown in figure 12.
7, by rotary-cut, drying, cutting edge workshop section, it is 6cm that timber is processed into width, and thickness is the specification veneer of 0.8mm, as shown in Figure 5;
8, the water-based isocyanate adhesive after veneer is coated allotment, glue-spread is 250g/m
2
9, described two front plate and two side panels are being glued together the junction mutually by being the miter angle combination, two front plate of gummed and side panel arrange one deck veneer between connecting mutually, by assembly shown in 13, are the square or rectangular hollow square column through composing the cross section;
10, with described hollow bamboo base fiber compound structure material slab, hollow bamboo base fiber compound structure material such as Figure 14 and shown in Figure 15 are processed in workshop sections such as process cutting edge, saw cut, sanding.
Claims (9)
1. hollow bamboo base fiber compound structure material, it comprises two front plate, two side panels, veneer and adhesives, it is characterized in that: two front plate and two side panels compose the hollow square column that the cross section is square or rectangular mutually, and described front plate and side panel are bamboo base fibrous composite; Between two front plate of described mutual gummed and the side panel junction one deck veneer is set, the thickness of described veneer is 0.1-1.5mm; Be provided with adhesive layer between bamboo base fibrous composite and the veneer, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive; The weld of two front plate of described mutual gummed and two side panels is an angle of 90 degrees or miter angle.
2. according to the described a kind of hollow bamboo base fiber compound structure material of claim 1, it is characterized in that: the front plate of hollow bamboo base fiber compound structure material and side panel are to be formed through vertical spreading by bamboo base fibrous composite, vertically the composition surface of spreading is provided with adhesive layer, and used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
3. according to the described a kind of hollow bamboo base fiber compound structure material of claim 2, it is characterized in that: also include cardboard, the bamboo base fibrous composite of described vertical spreading is provided with a layer paperboard between the composition surface of vertical spreading, be provided with adhesive layer between bamboo base fibrous composite and the cardboard, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
4. according to the described hollow bamboo base fiber compound structure material of claim 2, it is characterized in that: described spreading is finger spreading or mitered spreading.
5. the manufacture method of a hollow bamboo base fiber compound structure material comprises following workshop section: (one) raw material is prepared, (two) compound, (three) post-processed of recombinating, and it is characterized in that:
(1) raw material is prepared, and comprises the preparation of bamboo base fibrous composite, veneer preparation and adhesive allotment:
(1) bamboo base fibrous composite is prepared, by discongest, drying, impregnation, drying, gummed, maintenance, cutting edge, saw cuts and sanding workshop section, and bamboo processing is become the basic fibrous composite of specification bamboo; Be impregnating phenolic resin at the used adhesive of impregnation operation;
(2) certain thickness bamboo base fibrous composite is cut into 4 blocks of same widths bamboo base fibrous composite laths, the inclined-plane of miter angle or the right angle of an angle of 90 degrees are cut sth. askew in the lath both sides of each bamboo base fibrous composite, as two front plate and two side panels;
(3) veneer is prepared, and by rotary-cut, drying, cutting edge workshop section, timber is processed into the veneer that thickness is 0.1-1.5mm; Glued joint if weld is pressed miter angle, it is 1.5 times of the bamboo base fibrous composite thickness described in the step (2) that veneer is cut into width; Glued joint if weld is pressed an angle of 90 degrees, it is 1.1 times of the bamboo base fibrous composite thickness described in the step (2) that veneer is cut into width;
(4) adhesive allotment, with the host of the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive and curing agent according to 100: (10-20) ratio is evenly mixed;
(2) reorganization is compound
Described veneer upper and lower surface is coated the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive, described two front plate and two side panels are pressed miter angle or an angle of 90 degrees combination in mutual gummed junction, through composing the hollow square column that the cross section is square or rectangular; Two front plate of described mutual gummed and side panel arrange one deck veneer between connecting;
(3) post-processed
With described hollow bamboo base fiber compound structure material slab, hollow bamboo base fiber compound structure material is processed in workshop sections such as process cutting edge, saw cut, sanding.
6. according to the manufacture method of the described hollow bamboo base of claim 5 fiber compound structure material, comprise vertical spreading workshop section, it is characterized in that: described specification bamboo base fibrous composite two ends are adopted be machined into finger face or miter, the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive after finger face or miter are coated allotment again made the bamboo base fibrous composite of vertical spreading through vertical finger or mitered.
7. according to the manufacture method of the described hollow bamboo base of claim 5 fiber compound structure material, it is characterized in that: in described vertical spreading workshop section, the bamboo base fibrous composite of described vertical spreading is provided with a layer paperboard between the composition surface of vertical spreading, be provided with adhesive layer between bamboo base fibrous composite and the cardboard, used adhesive is the agent of resorcinol gluing or aquosity polymer isocyanic ester adhesive.
8. according to the manufacture method of the described hollow bamboo base fiber compound structure material of claim 5, it is characterized in that: in the mitered operation, the thickness at mitered position and inclined-plane ratio are 1: 10-1: 20.
9. hollow bamboo base fiber compound structure material according to claim 5 is characterized in that: in the finger operation, and the box pin joint parameter: the long 8mm-45mm of tooth, tooth top width 0.5mm-20mm, tooth pitch 3mm-20mm, tooth refer to gradient 1/6-1/9.
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Cited By (2)
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| CN105666627A (en) * | 2016-02-25 | 2016-06-15 | 南京林业大学 | High-strength glue-laminated bamboo hollow column and preparation method thereof |
| CN108518020A (en) * | 2018-06-15 | 2018-09-11 | 上海市建筑科学研究院 | A kind of hollow beam column component of cemented bamboo and preparation method thereof |
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| CN105735104B (en) * | 2016-02-25 | 2018-01-12 | 南京林业大学 | The high-strength bamboo wood beam of box and preparation method |
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|---|---|
| CN103231424B (en) | 2015-12-23 |
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Effective date of registration: 20161101 Address after: 242000 Anhui economic and Technological Development Zone, Xuancheng science and Technology Park B24 building, floor, floor, 3, Patentee after: Anhui Guanfu Jing Phyllostachys Technology Co Ltd Address before: The 242200 Anhui Economic Development Zone of Guangde province of China Road No. 88 Patentee before: Anhui Hongyu Bamboo Products Co., Ltd. |
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