CN219276107U - Recombined wood and fir composite structure material - Google Patents
Recombined wood and fir composite structure material Download PDFInfo
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- CN219276107U CN219276107U CN202223445068.XU CN202223445068U CN219276107U CN 219276107 U CN219276107 U CN 219276107U CN 202223445068 U CN202223445068 U CN 202223445068U CN 219276107 U CN219276107 U CN 219276107U
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Abstract
The utility model discloses a recombined wood and fir composite structure material, which comprises recombined wood laminate plates, fir laminate plates and adhesive layers, wherein the upper surface layer and the lower surface layer of the composite structure material are composed of 1-2 layers of recombined wood laminate plates with the thickness of 5-40mm, the core layer is composed of 1-5 layers of fir laminate plates with the thickness of 5-40mm, and the adhesive layer is arranged between the recombined wood laminate plates and the fir laminate plates; the recombined wood and the fir can be fixed in a finger joint or oblique joint mode to form a recombined wood laminate and a fir laminate respectively, and a paperboard and an adhesive layer are arranged between finger joint or oblique joint surfaces; the adhesive layer can be resorcinol adhesive or aqueous high molecular isocyanate adhesive. The utility model combines the recombined wood and the fir, not only utilizes the advantages of high intensity, high modulus and good hardness of the recombined wood, but also utilizes the advantages of high intensity-weight ratio, easy processing, low cost and the like of the fir, so that the performance of the produced recombined wood and fir composite structural material meets the basic requirement of structural wood material, and a new way is provided for the efficient utilization of the fir.
Description
Technical Field
The utility model relates to the technical field of artificial boards and manufacturing thereof, in particular to a recombined wood and fir composite structural material.
Background
China fir is important fast-growing Lin Mucai, the artificial forest area of China fir reaches 1871 ten thousand hectares, and the accumulation amount is 8.08 hundred million m 3 The cultivation area and the accumulation amount are the first in artificial forests in China. Fir has been a building structural material in the southern main production area of China since ancient times, and is used in the fields of houses, bridges, landscape buildings and the like, such as beams, columns and the like. Along with the development of modern wood structures, wood engineering materials such as standard materials, laminated wood and the like are developed, and the laminated wood manufactured by using the fir is difficult to meet the physical and mechanical property requirements of building structural materials due to soft materials and low strength, so that the application of the laminated wood in the modern laminated wood is severely limited.
The recombined wood is a novel wood engineering material manufactured by the working procedures of gum dipping, drying, assembly, gluing and the like of wood bundles. The rapid-growing wood is subjected to directional recombination, so that the physical and mechanical properties of the material are improved, new functions of hydrophobicity, flame retardance, corrosion resistance, mildew resistance, termite resistance and the like are also endowed, at present, the recombined wood is gradually used as a building engineering material, but is used as a beam and column material, and the recombined wood is limited in popularization and application to a certain extent due to high dead weight and high price.
Therefore, a composite structural material for simultaneously using the recombined wood and the fir is needed, and the characteristics of wide fir resources, easy processing and low cost are combined with the characteristics of high strength, good hardness and the like of the recombined wood, so that the market use requirement is met.
Disclosure of Invention
The utility model aims to provide a recombined wood and fir composite structure material, which is prepared by compounding recombined wood and fir laminate plates, combines the characteristics of wide fir resources, easy processing and low cost with the characteristics of high recombined wood strength, good hardness and the like, and provides a novel high-performance composite structure material.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a recombined wood and fir composite construction material, includes recombined wood plywood, fir plywood and adhesive layer, and composite construction material top layer and lower top layer are by 1-2 layers and every layer thickness is 5-40mm the recombined wood plywood, the sandwich layer is by 1-5 layers and every layer thickness is 5-40mm the fir plywood is constituteed, recombined wood plywood with be equipped with the adhesive layer between the fir plywood, the adhesive layer is resorcinol adhesive or waterborne polymer isocyanate adhesive.
The recombined wood in the recombined wood laminate is fixedly connected in a finger joint mode, and the finger joint parameters are as follows: the tooth length is 15-25mm, the tooth top width is 5-12mm, the tooth pitch is 16-26mm, and the tooth finger inclination is 1/4-1/8.
The fir in the fir laminate is fixedly connected in a finger joint mode, and the finger joint parameters are as follows: the tooth length is 15-25mm, the tooth top width is 5-12mm, the tooth pitch is 16-26mm, and the tooth finger inclination is 1/4-1/8.
The recombined wood in the recombined wood laminate can also be fixedly connected in an oblique joint mode, and the ratio of the thickness of the oblique joint part to the length of the oblique plane is 1:3-1:10.
The fir in the fir laminate can also be fixedly connected in an oblique joint mode, and the ratio of the thickness of the oblique joint part to the length of the inclined plane is 1:3-1:10.
The recombined wood in the recombined wood laminate is provided with a finger-joint paper board at a finger-joint surface, and the adhesive layer is arranged between the joint surface and the finger-joint paper board.
The recombined wood in the recombined wood laminate is provided with an oblique joint paper board at an oblique joint surface, and the adhesive layer is arranged between the joint surface and the oblique joint paper board.
The recombined wood veneer is transversely spliced in the width direction by recombined wood, a transverse glue spliced paperboard is arranged between transverse glue spliced joint surfaces of the recombined wood veneer, the thickness of the transverse glue spliced paperboard is 0.1-1.5mm, and an adhesive layer is arranged between the recombined wood and the transverse glue spliced paperboard.
The utility model discloses the following technical effects: the recombined wood laminate and the fir laminate are compounded, the advantages of high intensity, high modulus, good hardness, high strength-weight ratio, easiness in processing, low cost and the like of the recombined wood are utilized, the slabs are fixedly connected in a finger joint or mitred mode, the overall performance of the composite is improved, the performance of the produced recombined wood and fir composite meets the requirement of physical and mechanical properties of structural wood material basic requirement (LY/T2381-2014), and a new way is provided for efficient utilization of the fir.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of a 7-layer composite structure of the reconstituted wood/finger-jointed fir wood of example 1;
FIG. 2 is a diagram of a 5-layer composite structure of finger jointed reconstituted wood/finger jointed fir wood in example 2;
FIG. 3 is a diagram of a 7-layer composite structure of finger jointed reconstituted wood/finger jointed fir wood in example 3;
FIG. 4 is a diagram of a 5-layer composite structure of mitered reconstituted wood/mitered fir wood in example 4;
FIG. 5 is a diagram of 7-layer composite structure of mitered reconstituted wood/mitered fir in example 5;
FIG. 6 is a schematic diagram of a transverse glue joint of the recombined wood;
wherein, 1-the recombined wood laminate; 2-fir laminate; 3-an adhesive layer; 4-finger-jointed paper board; 5-miter board; 6-transversely splicing the paper boards.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Example 1
Referring to FIG. 1, the recombined/finger-jointed fir 7-layer composite structural material comprises 2 layers with a thickness of 20mm and a density of 0.85g/cm 3 The recombined wood laminate 1 is respectively arranged on the upper surface layer and the lower surface layer of a wood composite material, the core layer consists of 5 layers of finger-jointed fir laminate 2 with the thickness of 20mm, the fir laminate 2 is fixed by finger joint of fir, and finger joint parameters are as follows: the tooth length is 15mm, the tooth top width is 5mm, the tooth pitch is 16mm, and the tooth finger inclination is 1/4. An adhesive layer 3 is arranged between the recombined wood laminate 1 and the finger-jointed fir laminate 2, the adhesive layer 3 is resorcinol adhesive, the structure is shown in figure 1, the physical and mechanical properties are shown in table 1, and the produced recombined wood and fir composite structural material can meet the physical and mechanical property requirements of structural wood material basic requirement (LY/T2381-2014).
TABLE 1
Example 2
Referring to FIG. 2, the finger-jointed reconstituted wood/finger-jointed fir wood 5-layer composite structural material comprises 2 layers with a thickness of 20mm and a density of 0.85g/cm 3 Finger-jointed recombined wood laminate 1, 3 layers of finger-jointed fir laminate 2 and adhesive layer 3 with thickness of 20mm, the finger-jointed recombined wood laminate 1 adopts heavy weightThe group wood finger joint is fixed, and the finger joint parameters are as follows: tooth length 20mm, tooth top width 8mm, tooth pitch 21mm, tooth finger inclination 1/6 are arranged on upper and lower surface layers of wood composite material respectively, the sandwich layer is composed of 3 layers of finger joint fir plywood 2 with thickness of 20mm, finger joint fir plywood 2 is fixed by finger joint of fir, and finger joint parameters are as follows: the tooth length is 20mm, the tooth top width is 8mm, the tooth pitch is 21mm, the tooth finger inclination is 1/6, an adhesive layer 3 is arranged between the recombined wood laminate 1 and the finger-joint fir laminate 2, the adhesive layer 3 is an aqueous polymer isocyanate adhesive, the structure is shown in figure 2, the physical and mechanical properties are shown in table 2, and the produced recombined wood and fir composite structural material can meet the physical and mechanical property requirements of structural wood material basic requirements (LY/T2381-2014).
TABLE 2
Example 3
Referring to FIG. 3, the finger-jointed reconstituted wood/finger-jointed fir 7-layer composite structural material comprises 2 layers with a thickness of 15mm and a density of 0.65g/cm 3 Finger-jointed recombined wood laminate 1, 5 layers of finger-jointed fir laminate 2 with thickness of 15mm and adhesive layer 3, finger-jointed recombined wood laminate 1 is fixed by finger joint of recombined wood, and finger-jointed parameters are as follows: tooth length 25mm, tooth top width 12mm, tooth pitch 26mm, tooth finger inclination 1/8, place wooden combined material upper and lower top layer respectively, fir plywood 2 adopts fir finger to connect fixedly, finger connects the parameter and is: the tooth length is 25mm, the tooth top width is 12mm, the tooth pitch is 26mm, the tooth finger inclination is 1/8, the core layer consists of 5 layers of finger-jointed fir laminates 2, an adhesive layer 3 is arranged between the recombined wood laminate 1 and the finger-jointed fir laminates 2, the adhesive layer 3 is water-based high polymer isocyanate adhesive, the structure is shown in figure 3, the physical and mechanical properties are shown in table 3, and the produced recombined wood and fir composite structural material performance meets the physical and mechanical property requirement of the basic requirement of structural wood materials (LY/T2381-2014).
TABLE 3 Table 3
Example 4
Referring to FIG. 4, the mitered reconstituted wood/mitered fir 5-layer composite structural material comprises 2 layers of 20mm thick and 1.15g/cm density 3 The miter joint recombined wood laminate 1, 3 layers of miter joint fir laminate 2 and adhesive layer 3 with the thickness of 20mm, the miter joint recombined wood laminate 1 is fixed by miter joint of recombined wood, and miter joint parameters are as follows: the thickness and the inclined plane length ratio of the inclined joint part are 1:3, the inclined joint part is respectively arranged on the upper surface layer and the lower surface layer of the wood composite material, the core layer consists of 3 layers of inclined joint fir laminates 2 with the thickness of 20mm, the thickness and the inclined plane length ratio of the inclined joint part are 1:3, an adhesive layer 3 is arranged between the recombined wood laminate 1 and the fir laminates 2, the adhesive layer 3 is an aqueous polymer isocyanate adhesive, the structure is shown in figure 4, the physical and mechanical properties are shown in table 4, and the performance of the recombined wood and fir composite structural material meets the physical and mechanical properties requirement of the basic requirement of structural wood material (LY/T2381-2014).
TABLE 4 Table 4
Example 5
Referring to FIG. 5, the 7-ply composite structure of mitered reconstituted wood/mitered fir comprises 2 plies of 20mm thick and 1.15g/cm density 3 The miter joint recombined wood laminate 1, 5 layers of miter joint fir laminate 2 with the thickness of 20mm and the adhesive layer 3, the miter joint recombined wood laminate 1 is fixed by miter joint of recombined wood, and miter joint parameters are as follows: the thickness and the inclined plane length ratio of the inclined joint part are 1:10, the inclined joint part is respectively arranged on the upper surface layer and the lower surface layer of the wood composite material, the core layer consists of 3 layers of inclined joint fir laminates 2 with the thickness of 20mm, the thickness and the inclined plane length ratio of the inclined joint part are 1:10, an adhesive layer 3 is arranged between the recombined wood laminate 1 and the fir laminates 2, the adhesive layer is aqueous polymer isocyanate adhesive, the structure is shown in figure 4, the physical and mechanical properties are shown in table 4, and the performance of the recombined wood and fir composite structural material meets the requirement of the physical and mechanical properties of the basic requirement of structural wood material (LY/T2381-2014).
TABLE 5
Wherein, the joint surface that the recombined wood finger-jointed or the miter joint in the recombined wood laminate 1 is provided with finger-jointed cardboard 4 and miter board 5 respectively, all be equipped with adhesive layer 3 between recombined wood and finger-jointed cardboard 4 and the miter board 5, adhesive layer 3 is waterborne polymer isocyanate adhesive.
Referring to fig. 6, in the embodiment 1-5, the recombined wood laminate 1 may be formed by transversely splicing recombined wood in the width direction, finger joint or diagonal joint is performed after transversely splicing the recombined wood, a transverse splice paper board 6 is arranged between the splicing surfaces of the recombined wood, a wood veneer can also be used for the transverse splice paper board 6, an adhesive layer 3 is arranged between the splicing surfaces and the transverse splice paper board 6 or the wood veneer, the adhesive layer 3 is water-based polymer isocyanate adhesive, and the thickness of the transverse splice paper board 6 or the wood veneer is 1mm.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (8)
1. The composite structure material of the recombined wood and the fir is characterized in that: the novel composite structural material comprises a recombined wood laminate (1), a fir laminate (2) and an adhesive layer (3), wherein the upper surface layer and the lower surface layer of the composite structural material are both composed of 1-2 layers of recombined wood laminate (1) with each layer of thickness of 5-40mm, a core layer is composed of 1-5 layers of fir laminate (2) with each layer of thickness of 5-40mm, the adhesive layer (3) is arranged between the recombined wood laminate (1) and the fir laminate (2), and the adhesive layer (3) is resorcinol adhesive or aqueous high-molecular isocyanate adhesive.
2. The reconstituted wood and fir composite according to claim 1, wherein: the recombined wood in the recombined wood laminate (1) is fixedly connected in a finger joint mode, and finger joint parameters are as follows: the tooth length is 15-25mm, the tooth top width is 5-12mm, the tooth pitch is 16-26mm, and the tooth finger inclination is 1/4-1/8.
3. The reconstituted wood and fir composite according to claim 1, wherein: the fir in the fir laminate (2) is fixedly connected in a finger joint mode, and the finger joint parameters are as follows: the tooth length is 15-25mm, the tooth top width is 5-12mm, the tooth pitch is 16-26mm, and the tooth finger inclination is 1/4-1/8.
4. The reconstituted wood and fir composite according to claim 2, wherein: the recombined wood in the recombined wood laminate (1) can also be fixedly connected in an oblique joint mode, and the ratio of the thickness of the oblique joint part to the length of the inclined plane is 1:3-1:10.
5. A reconstituted wood and fir wood composite according to claim 3, wherein: the fir in the fir laminate (2) can be fixedly connected in an oblique joint mode, and the ratio of the thickness of the oblique joint part to the length of the inclined plane is 1:3-1:10.
6. The reconstituted wood and fir composite according to claim 2, wherein: the recombined wood in the recombined wood laminate (1) is provided with a finger joint paper board (4) at a finger joint surface, and the adhesive layer (3) is arranged between the joint surface and the finger joint paper board (4).
7. The reconstituted wood and fir composite according to claim 4, wherein: the recombined wood in the recombined wood laminate (1) is provided with an oblique joint paper board (5) at an oblique joint surface, and the adhesive layer (3) is arranged between the joint surface and the oblique joint paper board (5).
8. The reconstituted wood and fir composite according to claim 1, wherein: the recombined wood veneer (1) is transversely spliced through recombined wood in the width direction, a transverse glue splicing paperboard (6) is arranged between transverse glue splicing joint surfaces of the recombined wood veneer (1), the thickness of the transverse glue splicing paperboard (6) is 0.1-1.5mm, and an adhesive layer (3) is arranged between the recombined wood and the transverse glue splicing paperboard (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223445068.XU CN219276107U (en) | 2022-12-22 | 2022-12-22 | Recombined wood and fir composite structure material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223445068.XU CN219276107U (en) | 2022-12-22 | 2022-12-22 | Recombined wood and fir composite structure material |
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| CN219276107U true CN219276107U (en) | 2023-06-30 |
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| CN202223445068.XU Active CN219276107U (en) | 2022-12-22 | 2022-12-22 | Recombined wood and fir composite structure material |
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