CN113664950A - Full-bamboo container bottom plate and manufacturing method thereof - Google Patents
Full-bamboo container bottom plate and manufacturing method thereof Download PDFInfo
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- CN113664950A CN113664950A CN202110959329.0A CN202110959329A CN113664950A CN 113664950 A CN113664950 A CN 113664950A CN 202110959329 A CN202110959329 A CN 202110959329A CN 113664950 A CN113664950 A CN 113664950A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 238
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 238
- 241001330002 Bambuseae Species 0.000 claims abstract description 238
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 238
- 239000010410 layer Substances 0.000 claims description 109
- 238000001035 drying Methods 0.000 claims description 37
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 238000007598 dipping method Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 17
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000005011 phenolic resin Substances 0.000 claims description 13
- 229920001568 phenolic resin Polymers 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 244000302661 Phyllostachys pubescens Species 0.000 claims description 5
- 235000003570 Phyllostachys pubescens Nutrition 0.000 claims description 5
- 235000015874 Sinocalamus latiflorus Nutrition 0.000 claims description 5
- 244000092524 Sinocalamus latiflorus Species 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 238000009408 flooring Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 240000005340 Dendrocalamus giganteus Species 0.000 claims description 2
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- 240000009132 Sagittaria sagittifolia Species 0.000 claims 1
- 235000006466 Sagittaria sagittifolia Nutrition 0.000 claims 1
- 239000011150 reinforced concrete Substances 0.000 claims 1
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- 239000002994 raw material Substances 0.000 description 10
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- 230000003068 static effect Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 208000011580 syndromic disease Diseases 0.000 description 3
- 241000675108 Citrus tangerina Species 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/022—Laminated structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention belongs to the technical field of bamboo processing, and particularly relates to a full-bamboo container bottom plate and a manufacturing method thereof.
Description
Technical Field
The invention belongs to the technical field of bamboo processing, and particularly relates to a full-bamboo container bottom plate and a manufacturing method thereof.
Background
The container floor is the main load bearing member for container transport. With the increasing world economy, the demand for container flooring has increased dramatically. At present, more than 90% of container bottom plates of the world are produced by China, and bamboo-wood composite container bottom plates are widely applied due to rich raw materials, excellent performance and low cost. The bamboo-wood composite container bottom plate is formed by alternately assembling bamboo units such as bamboo curtains and bamboo mats and wood veneers, and the surface of the bamboo-wood composite container bottom plate is covered with a plywood formed by hot pressing impregnated paper. The main unit materials are bamboo curtains woven by radial bamboo splits and chordwise bamboo splits, and the wood veneer is used as a plate leveling material, a bamboo mat and impregnated paper to endow the surface smoothness and the wear resistance of the bottom plate of the container. Five unit materials with different forms are used for the container bottom plate, and the material processing consumes labor and time; the method depends on two raw materials of wood and bamboo, the material purchasing efficiency is low, and the restriction factors such as wood cutting syndrome, transportation syndrome, quarantine syndrome and the like are increased; the whole production process has high labor intensity and complicated production procedures.
Disclosure of Invention
The invention aims to provide a full-bamboo container bottom plate and a manufacturing method thereof, which aim to solve the problems and achieve the aims of reducing the types of raw materials, improving the raw material purchasing efficiency, reducing the production labor intensity and simplifying the production process.
In order to achieve the purpose, the invention provides the following scheme: a full-bamboo container bottom plate comprises a central layer, wherein reinforcing layers are respectively arranged on the upper side and the lower side of the central layer, and a surface layer is arranged on one side, away from the central layer, of each reinforcing layer;
the central layer comprises at least one first longitudinal bamboo strip layer, at least one first transverse bamboo strip layer arranged on the upper side and the lower side of the first longitudinal bamboo strip layer, and the reinforcing layer is positioned on the outer side of the first transverse bamboo strip layer;
the reinforcing layer comprises a plurality of second longitudinal bamboo strip layers and a plurality of second transverse bamboo strip layers, the second longitudinal bamboo strip layers are positioned on the outer sides of the first transverse bamboo strip layers, the second transverse bamboo strip layers are positioned on the outer sides of the second longitudinal bamboo strip layers, and the number of the second longitudinal bamboo strip layers is the same as that of the second transverse bamboo strip layers;
the surface layer comprises at least one bamboo bundle layer, and the bamboo bundle layer is positioned on the outer side of the second transverse bamboo strip layer.
Preferably, the number of the first longitudinal bamboo strip layers is one, the number of the first transverse bamboo strip layers is one, the number of the second longitudinal bamboo strip layers is one, the number of the second transverse bamboo strip layers is one, and the number of the bamboo bundle layers is one.
Preferably, the number of the first longitudinal bamboo strip layers is one, the number of the first transverse bamboo strip layers is one, the number of the second longitudinal bamboo strip layers is one, the number of the second transverse bamboo strip layers is one, and the number of the bamboo bundle layers is two.
A method for manufacturing a full-bamboo container bottom plate comprises the following steps:
processing bamboo, namely processing the bamboo into bamboo bundles and bamboo strips respectively;
primary drying, namely primary drying is carried out on the bamboo bundles and the bamboo strips;
dipping glue, namely dipping the bamboo bundles and bamboo strips which are dried for the first time into glue solution;
secondary drying, namely performing secondary drying on the bamboo bundles and the bamboo strips after gum dipping;
assembling, namely assembling the bamboo bundles and the bamboo strips which are subjected to secondary drying;
and (3) performing hot press molding, namely performing hot press molding on the assembled bamboo bundles and bamboo strips and curing to obtain the all-bamboo container bottom plate.
Preferably, in the bamboo processing, the bamboo bundles are full-length loose bundle-shaped units which are mutually cross-linked and keep the original arrangement mode of the fibers, and the glue absorption rate is more than 60 percent; the bamboo strips comprise bamboo green and bamboo yellow, the thickness of the bamboo strips is the thickness of the bamboo wall of the bamboo, and the width of the bamboo strips is 0.5-1.5 mm.
Preferably, the moisture content of the bamboo bundles and the bamboo strips after the primary drying treatment is below 10%.
Preferably, in the gum dipping, the gum solution is phenolic resin and comprises phenol, formaldehyde and NaOH, the molar ratio of the phenol to the formaldehyde to the NaOH is 1:1.9-2.2:0.1-0.2, the molecular weight distribution of the gum solution is 95% -98% between 200 and 600, the solid content is 15% -35%, and the gum dipping amount is 10-20% of the mass fraction of the bamboo bundles and the bamboo strips.
Preferably, the drying temperature of the secondary drying is 60-85 ℃, and the water content of the bamboo bundles and the bamboo strips after the secondary drying is 8-15%.
Preferably, the thickness of the full-bamboo container bottom plate obtained after hot press molding is 28mm +/-0.8 mm, and the density is 0.78-0.85g/cm3The curing temperature is 120-150 ℃.
Preferably, the bamboo material is one or more of moso bamboo, dendrocalamus latiflorus, giant dragon bamboo, green tangerine orange peel bamboo, lobular dragon bamboo and arrowhead bamboo.
The invention has the following technical effects:
the invention provides a full-bamboo container bottom plate and a manufacturing method thereof, which adopt two unit forms of bamboo bunches and bamboo strips, reduce the processing of unit materials such as wood veneers, bamboo mats and the like in the prior art, reduce the types of processing raw materials, reduce the price of purchasing raw materials, simplify the production process of the container bottom plate by changing the unit forms and optimizing the assembly structure, improve the production efficiency and reduce the production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a sequence diagram of assembly according to a first embodiment of the present invention;
fig. 2 is a sequence diagram of assembly according to a second embodiment of the present invention.
Wherein, 1, bamboo bundle layer; 2. a first transverse bamboo strip layer; 3. a first longitudinal bamboo strip layer; 4. a second transverse bamboo strip layer; 5. a second longitudinal bamboo strip layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
referring to fig. 1, the embodiment provides a full bamboo container bottom plate, which includes a central layer, wherein reinforcing layers are respectively disposed on the upper and lower sides of the central layer, and a surface layer is disposed on one side of each reinforcing layer, which is far away from the central layer;
the central layer comprises at least one first longitudinal bamboo strip layer 3, at least one first transverse bamboo strip layer 2 arranged at the upper side and the lower side of the first longitudinal bamboo strip layer 3, and a reinforcing layer positioned at the outer side of the first transverse bamboo strip layer 2;
the reinforcing layer comprises a plurality of second longitudinal bamboo strip layers 5 and a plurality of second transverse bamboo strip layers 4, the second longitudinal bamboo strip layers 5 are positioned on the outer sides of the first transverse bamboo strip layers 2, the second transverse bamboo strip layers 4 are positioned on the outer sides of the second longitudinal bamboo strip layers 5, and the number of the second longitudinal bamboo strip layers 5 is the same as that of the second transverse bamboo strip layers 4;
the surface layer comprises at least one bamboo bundle layer 1, the bamboo bundle layer 1 is positioned on the outer side of the second transverse bamboo strip layer 4, the two sides of the first longitudinal bamboo strip layer 3 are symmetrical in structure, and the consistency of the performance of the manufactured finished container bottom plate is guaranteed.
According to the further optimized scheme, the number of the first longitudinal bamboo strip layers 3 is one, the number of the first transverse bamboo strip layers 2 is one, the number of the second longitudinal bamboo strip layers 5 is one, the number of the second transverse bamboo strip layers 4 is one, and the number of the bamboo bundle layers 1 is one.
A method for manufacturing a full-bamboo container bottom plate comprises the following steps:
processing bamboo, namely processing the bamboo into bamboo bundles and bamboo strips respectively;
primary drying, namely primary drying is carried out on the bamboo bundles and the bamboo strips;
dipping glue, namely dipping the bamboo bundles and bamboo strips which are dried for the first time into glue solution;
secondary drying, namely performing secondary drying on the bamboo bundles and bamboo strips after gum dipping;
assembling, namely assembling the bamboo bundles and the bamboo strips which are subjected to secondary drying;
and (3) performing hot press molding, namely performing hot press molding on the assembled bamboo bundles and bamboo strips and curing to obtain the full-bamboo container bottom plate, and sequentially processing the raw material bamboo materials through the steps to manufacture the container bottom plate by processing the raw material bamboo materials.
The scheme is further optimized, in the bamboo processing, the bamboo bundles are full-length loose bundle-shaped units which are mutually cross-linked and keep the original arrangement mode of the fibers, and the glue absorption rate is more than 60 percent; the bamboo strips comprise bamboo green and bamboo yellow, the thickness of the bamboo strips is the thickness of the bamboo wall of the bamboo, the width of the bamboo strips is 0.5-1.5mm, and the utilization rate of the bamboo raw material is improved.
The water content of the bamboo bundles and bamboo strips subjected to primary drying treatment is below 10%, so that the water content is reduced, and the influence of water on the glue is reduced.
According to the further optimization scheme, in the gum dipping, the gum solution is phenolic resin and comprises phenol, formaldehyde and NaOH, the molar ratio of the phenol to the formaldehyde to the NaOH is 1:1.9-2.2:0.1-0.2, the molecular weight of the gum solution is 95% -98% of that of 200 plus materials 600, the solid content is 15% -35%, the gum dipping amount is 10% -20% of the mass fraction of the bamboo bundles and the bamboo strips, the gum dipping amount is limited, the firm adhesion of the bamboo bundles and the bamboo strips can be ensured, and the influence on the hot press forming process caused by excessive gum dipping amount can be avoided.
The method further optimizes the scheme that the drying temperature of secondary drying is 60-85 ℃, the moisture content of the bamboo bundles and the bamboo splints after secondary drying is 8-15%, and the threshold value of the drying temperature is set to ensure that the subsequent hot press molding can achieve the best effect.
The further optimized proposal is that the thickness of the full bamboo container bottom plate obtained after the hot press molding is 28mm plus or minus 0.8mm, and the density is 0.78-0.85g/cm3The curing temperature is 120-150 ℃, and the curing temperature threshold is set to ensure that the performance of the bamboo wood is not influenced due to overhigh temperature while the hot-press forming effect is ensured.
In a further optimized scheme, the bamboo material is one or more of moso bamboo, dendrocalamus latiflorus, dendrocalamus giganteus, green tangerine orange peel bamboo, lobular dendrocalamus latiflorus and arrowhead bamboo.
The specific manufacturing process of this embodiment is as follows:
the first condition is as follows:
selecting moso bamboo chips, wherein one part of the bamboo chips are fluffed into loose bundle-shaped units which are long enough and are mutually crosslinked by a fluffer, and the original arrangement mode of fibers is kept, and the glue absorption rate of the bamboo bundles is 75%; and a part of bamboo chips are made into bamboo strips with the width of 1.2mm by a thin bamboo strip breaking machine. Drying the two unit materials until the water content is 8%, and then soaking the two unit materials into phenolic resin, wherein the molar ratio of phenol to formaldehyde to NaOH in the phenolic resin is 1:2.0: 0.12; the molecular weight distribution of the phenolic resin is 98 percent between 200 and 300, and the gum dipping amount of the bamboo bundles and the bamboo strips is 14 percent; drying the bamboo bundles and bamboo strips after gum dipping until the water content is 15 percent, and the drying temperature is 70 ℃; finally, assembling according to the figure 1, wherein the number of the bamboo bundle layers 1 is 1. The blank is sent into a press for hot pressing to obtain the product with the density of 0.83g/cm3The curing temperature of the container bottom plate is 140 ℃. The prepared container bottom plate has the thickness of 28.3mm and the water content of 5.38 percent and is vertically staticThe bending strength is 96.22MPa, and the elastic modulus is 12883.42 MPa; the transverse static bending strength is 52.42MPa, and the transverse elastic modulus is 4018.04 MPa; dip peel was 0, short span shear 8653.82N, concentrated load 6994.58N.
Case two:
selecting giant dragon bamboo chips, wherein one part of the bamboo chips are fluffed into loose bundle-shaped units which are long and are mutually crosslinked by a fluffer and keep the original arrangement mode of fibers, and the glue absorption rate of the bamboo bundles is 93%; and a part of bamboo chips are made into bamboo strips with the width of 1.5mm by a thin bamboo strip breaking machine. Drying the two unit materials until the water content is 6%, and then soaking the two unit materials into phenolic resin, wherein the molar ratio of phenol to formaldehyde to NaOH in the phenolic resin is 1:2.2: 0.15; the molecular weight distribution of the phenolic resin is 96 percent between 300 and 400, and the gum dipping amount of the bamboo bundles and the bamboo strips is 10 percent; drying the bamboo bundles and bamboo strips after gum dipping until the water content is 15 percent and the drying temperature is 80 ℃; finally, assembling according to the figure 1, wherein the number of the bamboo bundle layers 1 is 1. Feeding the blank into a press for hot pressing to obtain the product with a density of 0.78g/cm3The curing temperature of the container bottom plate is 120 ℃. The prepared container bottom plate has the thickness of 28.5mm, the water content of 8.33 percent, the longitudinal static bending strength of 86.73MPa and the elastic modulus of 11044.50 MPa; the transverse static bending strength is 48.19MPa, and the transverse elastic modulus is 3964.28 MPa; the dip peel was longest at the full bond line length 1/5, short span shear 7836.58N, and concentrated load 58340.1N.
Example two:
referring to fig. 2, the container bottom plate of the present embodiment is different from the first embodiment only in that: the number of the first longitudinal bamboo strip layers 3 is one, the number of the first transverse bamboo strip layers 2 is one, the number of the second longitudinal bamboo strip layers 5 is one, the number of the second transverse bamboo strip layers 4 is one, and the number of the bamboo bundle layers 1 is two.
The first condition is as follows:
green bamboo chips are selected, a part of the green bamboo chips are fluffed into loose bundle-shaped units which are long and are mutually crosslinked by a fluffer and keep the original arrangement mode of fibers, and the glue absorption rate of the bamboo bundles is 86%; and a part of bamboo chips are made into bamboo strips with the width of 0.8mm by a thin bamboo strip breaking machine. Drying the two unit materials until the water content is 10 percent, and thenImmersing the phenolic resin in a phenolic resin, wherein the molar ratio of phenol to formaldehyde to NaOH in the phenolic resin is 1:1.9: 0.10; the molecular weight distribution of the phenolic resin is 95 percent between 300 and 400, and the gum dipping amount of the bamboo bundles and the bamboo strips is 20 percent; drying the bamboo bundles and bamboo strips after gum dipping until the water content is 8 percent and the drying temperature is 70 ℃; finally, assembling according to the figure 2, wherein the number of the bamboo bundle layers 1 is 2. Feeding the blank into a press for hot pressing to obtain the product with a density of 0.85g/cm3The curing temperature of the container bottom plate is 130 ℃. The prepared container bottom plate has the thickness of 27.9mm, the water content of 4.28 percent, the longitudinal static bending strength of 103.59MPa and the elastic modulus of 16803.56 MPa; the transverse static bending strength is 48.19MPa, and the transverse elastic modulus is 4666.98 MPa; dip peel was 0, short span shear 9481.70N, concentrated load 76679.9N.
Comparative example:
the wood-bamboo composite container bottom plate with the impregnated film paper covering surface purchased from the market adopts raw materials of moso bamboo and eucalyptus veneers, and the number of layers is 19. The performance of the plate is as follows: the longitudinal static bending strength is 86.50MPa, and the elastic modulus is 10084.29 MPa; the transverse static bending strength is 36.28MPa, and the transverse elastic modulus is 3626.81 MPa; the dip peel was longest at the full bond line length 1/3, short span shear 6805.17N, and concentrated load 51317.80N.
The data of the examples and the comparative examples of the application are as follows:
in the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. A full bamboo container bottom plate which is characterized in that: the reinforced concrete floor comprises a central layer, wherein reinforcing layers are respectively arranged on the upper side and the lower side of the central layer, and a surface layer is arranged on one side, far away from the central layer, of each reinforcing layer;
the central layer comprises at least one first longitudinal bamboo strip layer (3), at least one first transverse bamboo strip layer (2) arranged on the upper side and the lower side of the first longitudinal bamboo strip layer (3), and the reinforcing layer is positioned on the outer side of the first transverse bamboo strip layer (2);
the reinforcing layer comprises a plurality of second longitudinal bamboo strip layers (5) and a plurality of second transverse bamboo strip layers (4), the second longitudinal bamboo strip layers (5) are positioned on the outer side of the first transverse bamboo strip layer (2), the second transverse bamboo strip layers (4) are positioned on the outer side of the second longitudinal bamboo strip layers (5), and the number of the second longitudinal bamboo strip layers (5) and the number of the second transverse bamboo strip layers (4) are the same;
the surface layer comprises at least one bamboo bundle layer (1), and the bamboo bundle layer (1) is located on the outer side of the second transverse bamboo strip layer (4).
2. A full bamboo container flooring according to claim 1, wherein: the bamboo bundle is characterized in that the number of the first longitudinal bamboo strip layers (3) is one, the number of the first transverse bamboo strip layers (2) is one, the number of the second longitudinal bamboo strip layers (5) is one, the number of the second transverse bamboo strip layers (4) is one, and the number of the bamboo bundle layers (1) is one.
3. A full bamboo container flooring according to claim 1, wherein: the bamboo bundle is characterized in that the number of the first longitudinal bamboo strip layers (3) is one, the number of the first transverse bamboo strip layers (2) is one, the number of the second longitudinal bamboo strip layers (5) is one, the number of the second transverse bamboo strip layers (4) is one, and the number of the bamboo bundle layers (1) is two.
4. A method of manufacturing a full bamboo container flooring according to any one of claims 1 to 3, wherein: the method comprises the following steps:
processing bamboo, namely processing the bamboo into bamboo bundles and bamboo strips respectively;
primary drying, namely primary drying is carried out on the bamboo bundles and the bamboo strips;
dipping glue, namely dipping the bamboo bundles and bamboo strips which are dried for the first time into glue solution;
secondary drying, namely performing secondary drying on the bamboo bundles and the bamboo strips after gum dipping;
assembling, namely assembling the bamboo bundles and the bamboo strips which are subjected to secondary drying;
and (3) performing hot press molding, namely performing hot press molding on the assembled bamboo bundles and bamboo strips and curing to obtain the all-bamboo container bottom plate.
5. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: in the bamboo processing, the bamboo bundles are full-length loose bundle-shaped units which are mutually cross-linked and keep the original arrangement mode of fibers, and the glue absorption rate is more than 60 percent; the bamboo strips comprise bamboo green and bamboo yellow, the thickness of the bamboo strips is the thickness of the bamboo wall of the bamboo, and the width of the bamboo strips is 0.5-1.5 mm.
6. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: the moisture content of the bamboo bundles and the bamboo strips after primary drying treatment is below 10%.
7. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: in the gum dipping, the gum solution is phenolic resin and comprises phenol, formaldehyde and NaOH, the molar ratio of the phenol to the formaldehyde to the NaOH is 1:1.9-2.2:0.1-0.2, the molecular weight distribution of the gum solution is 95% -98% between 200 and 600, the solid content is 15% -35%, and the gum dipping amount is 10% -20% of the mass fraction of the bamboo bundles and the bamboo strips.
8. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: the drying temperature of the secondary drying is 60-85 ℃, and the moisture content of the bamboo bundles and the bamboo strips after the secondary drying is 8-15%.
9. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: the thickness of the full bamboo container bottom plate obtained after hot press molding is 28mm +/-0.8 mm, and the density is 0.78-0.85g/cm3The curing temperature is 120-150 ℃.
10. The method for manufacturing the all-bamboo container soleplate according to claim 4, wherein: the bamboo material is one or more of Phyllostachys Pubescens, dendrocalamus latiflorus, dendrocalamus giganteus, pericarpium Citri Reticulatae viride bamboo, lobular dendrocalamus latiflorus and Sagittaria sagittifolia.
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