CN114851321A - Bamboo core board and preparation process and application thereof - Google Patents
Bamboo core board and preparation process and application thereof Download PDFInfo
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- CN114851321A CN114851321A CN202210600472.5A CN202210600472A CN114851321A CN 114851321 A CN114851321 A CN 114851321A CN 202210600472 A CN202210600472 A CN 202210600472A CN 114851321 A CN114851321 A CN 114851321A
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Images
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
- B27J1/02—Braiding, e.g. basket-making
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a bamboo core board and a preparation process and application thereof, wherein the bamboo core board comprises: the bamboo sandwich panel comprises a bamboo upper panel and a bamboo lower panel, and a plurality of bamboo core tubes are arranged and fixed between the upper panel and the lower panel at intervals, and the upper panel, the lower panel and the core tubes are all made of bamboo skin composite materials. Based on biological carbon fixation materials, the invention realizes that the two-dimensional plane structure of bamboo fibers is made into a three-dimensional space structure of a core tube by using the high strength (small density, higher specific strength than steel, lead alloy and the like) of the bamboo skin and adopting the winding process, thereby greatly improving the mechanical property and expanding the application range.
Description
Technical Field
The invention relates to a bamboo core board and a preparation process and application thereof.
Background
The bamboo is a natural resource widely existing in nature, the growth cycle is short, the usable bamboo can be produced in 3-5 years generally, and the bamboo absorbs carbon dioxide and releases oxygen in the growth process, has obvious effect on environmental protection, is light and tough, has small density and high specific strength, can be used as a building engineering material, and in addition, the production waste can be rapidly degraded, the energy consumption is low, and the environmental pollution is small; therefore, the bamboo wood is a high-quality biological carbon sequestration material and a good building engineering material.
However, the existing bamboo board manufacturing process can only be used as a flat plate, which hinders the wide application of bamboo materials. The existing core plates in the world comprise an upper panel, a lower panel and a core pipe arranged between the two panels, which are all made of metal materials, such as stainless steel, aluminum and other metal materials. However, the source of the metal material, from mining, transportation, smelting, to the fabrication of the parts in the mine, emits large amounts of carbon dioxide. The bamboo is made of renewable materials, has small density and specific strength higher than that of steel, lead alloy and the like, absorbs carbon dioxide in the growth process, has the carbon dioxide absorption capacity 4 times that of common trees, releases 3 times of oxygen in woods, has short growth period of 3-5 years generally, can quickly degrade production waste, has low energy consumption, and is an ideal biological carbon fixation material.
Disclosure of Invention
In order to achieve the purpose, the invention provides a bamboo core plate and a preparation process and application thereof, and the following technical scheme is as follows:
the invention provides a bamboo core board, which comprises:
the upper panel comprises an upper surface layer and a structural layer from top to bottom, the structural layer is formed by laminating a plurality of bamboo skin nets and paving and pressing filling materials among the layers, amino resin adhesives are adhered to the surfaces of the bamboo skin nets, the upper surface layer is a bamboo fiber non-woven fabric soaked with modified epoxy vinyl ester resin, and the upper surface layer is adhered to and fixedly connected with the upper surface of the structural layer; the lower panel comprises a structural layer and a bottom layer from top to bottom, the bottom layer is a bamboo fiber non-woven fabric soaked with modified epoxy vinyl ester resin, and the bottom layer is attached to and fixedly connected with the lower surface of the structural layer of the lower panel;
the bamboo core tubes are arranged between the upper panel and the lower panel and are respectively vertical to the upper panel and the lower panel, the bamboo core tubes are of hollow circular tube structures, the upper ends of the bamboo core tubes are fixedly connected with the bottom surface of the upper panel, and the lower ends of the bamboo core tubes are fixedly connected with the top surface of the lower panel.
Optionally, the bamboo core tube includes, from inside to outside, an inner liner, a winding layer and an outer surface layer, the winding layer is a circular tube formed by laminating and winding a plurality of bamboo split nets impregnated with amino resin adhesives, the inner liner and the outer surface layer are bamboo fiber non-woven fabrics impregnated with modified epoxy vinyl ester resin, the inner liner is attached to and fixedly connected with an inner wall of the winding layer, and the outer surface layer is attached to and fixedly connected with an outer wall of the winding layer.
Further optionally, the modified epoxy vinyl ester resin comprises the following components in parts by mass:
100 parts of epoxy vinyl ester resin, 3-5 parts of toughening agent, 12-15 parts of diluent and 1-3 parts of carbon nanofiber.
Optionally, the two ends of the bamboo core tube are provided with reinforcing plugs, and the reinforcing plugs are made of carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin.
Optionally, plugs are arranged on the top surface and the bottom surface of the two ends of the bamboo core tube, and the plugs are made of carbon fiber mesh cloth soaked with epoxy resin and/or glass fiber mesh cloth soaked with epoxy resin.
Optionally, the filling material is a mixture of bio-based particles and resin, the total mass of the bio-based particles accounts for 20% -40% of the total mass of the filling material, and the bio-based particles are one or more of bamboo powder, wood powder, straw powder and rattan powder.
The invention provides a preparation process of a bamboo core plate, which comprises the following steps:
s1, preparing bamboo splits:
s1.1, splitting an original bamboo material into bamboo chips, removing green and yellow, manufacturing a plurality of thin bamboo strips with equal length according to needs, wherein the thickness of the removed yellow bamboo chips is 0.2-0.4 mm, the thickness of the removed green bamboo chips is 0.1-0.3 mm, the width of each thin bamboo strip is 0.2-2 mm, and drying the thin bamboo strips after degreasing treatment until the water content is lower than 10% to obtain degreased thin bamboo strips;
s1.2, selecting degreased bamboo strips with the tensile strength of more than or equal to 90MPa, soaking in a 5% NaOH solution for 6 hours, taking out, drying, controlling the water content to be below 10% to obtain alkali-dipped bamboo strips, and selecting the alkali-dipped bamboo strips with the tensile strength of more than or equal to 90MPa for later use;
s2, preparing a resin material:
the resin or particle layer resin used for impregnating the bamboo skin layer is one of epoxy resin, amino resin, phenolic resin, unsaturated polyester resin, polyurethane resin, unsaturated polyester resin or polyurethane resin;
s2.1, mixing and uniformly stirring 100 parts of amino resin, 15-30 parts of biological filler and 1-3 parts of carbon nanofiber by mass to obtain an amino resin adhesive for later use;
s2.2, mixing and uniformly stirring 100 parts of epoxy vinyl ester resin, 3-5 parts of toughening agent, 12-15 parts of diluent and 1-3 parts of carbon nanofiber by mass to obtain modified epoxy vinyl ester resin for later use;
s3, preparing a filling material:
mixing the bio-based particles with resin and uniformly stirring to obtain a filling material for later use; the bio-based particles are one or more of bamboo powder, wood powder, straw powder and vine powder, and the total mass of the bio-based particles accounts for 20-40% of the total mass of the filling material;
s4, preparing a bamboo skin net:
s4.1, weaving the bamboo splits obtained in the step S1.2 according to the interval of 0.1-1 mm by using a bamboo split net for the upper panel and the lower panel, and respectively preparing and stacking the bamboo splits according to the designed size specification of the bamboo split net for the upper panel and the lower panel; manufacturing a mounting box type house, adopting an international standard of a transport mounting box, taking 2438 as a modulus, manufacturing a conventional building, and determining according to the building modulus specified by the state; the lapping between the adjacent upper panel bamboo skin nets and the adjacent lower panel bamboo skin nets is more than or equal to 50mm, the lapping deviation of each bamboo skin sheet in the width direction is not more than 5mm, and the lapping angle deviation is not more than 5 degrees;
s4.2, properly selecting the width of the bamboo skin net which is 1-50 mm according to the height of the core pipe, and rolling according to the interval of 0.1-1 mm to obtain the bamboo skin net for the core pipe; in order to be suitable for core pipes with various heights, the core pipe can be prepared into a single double-root or a plurality of single double-root core pipes by using a bamboo skin net;
s5, preparing a bamboo core tube:
s5.1, manufacturing an inner liner, namely wrapping a layer of film or coating a release agent on the forming tool circular tube in order to facilitate the forming tool circular tube to be drawn out, and then wrapping the forming tool circular tube with bamboo fiber non-woven fabric and epoxy vinyl ester resin in a circumferential direction to obtain the inner liner;
s5.2, manufacturing a winding layer, dipping the core pipe prepared in the step S4.2 in resin by using a bamboo skin net, so that a resin material is adhered to the outer surface of the core pipe by using the bamboo skin net, simultaneously dipping the resin and winding the core pipe by using the bamboo skin net, winding the core pipe on the inner liner, applying a certain compression roller pressure, attaching the resin material on the surface of the core pipe by using the bamboo skin net, and filling the resin material in gaps of the bamboo skins to obtain the winding layer;
s5.3, manufacturing an outer surface layer, and annularly wrapping the winding layer with bamboo fiber non-woven fabric and epoxy vinyl ester resin;
s5.4, manufacturing a reinforcing layer, and annularly wrapping glass fiber mesh cloth soaked with epoxy resin or carbon fiber mesh cloth soaked with epoxy resin at two ends of the core pipe to obtain the reinforcing layer;
s5.5, plugging two ends, namely, drawing out the circular pipe of the forming tool, moving the core pipe to the next station, simultaneously moving mechanisms on two sides, coating epoxy resin glue on the top surfaces and the bottom surfaces of two ends of the core pipe, and sticking carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin to plug the two end surfaces;
s5.6, curing to complete the preparation of the bamboo core pipe;
s6, preparing the following plate:
s6.1, coating a layer of release agent on the surface of the lower template;
s6.2, paving the bamboo fiber non-woven fabric soaked by the prepared modified epoxy vinyl ester resin on a template to obtain a bottom layer;
s6.3, immersing the lower panel bamboo web net prepared in the S4.1 into the prepared amino resin adhesive, so that the lower panel bamboo web net is completely coated by the amino resin adhesive; then placing, and paying attention to that the lap joint between the bamboo skin nets of the adjacent lower panels is not less than 50 mm;
s6.4, uniformly paving the filling material prepared in the S3 on the lower panel bamboo split net and compacting;
s6.5, circulating S6.3 and S6.4, laying a plurality of layers of lower panel bamboo skin nets adhered with the amino resin adhesive, and laying and pressing filling materials among the layers to form a structural layer;
s6.6, curing and demolding to obtain a lower panel;
s7, preparing an upper panel:
s7.1, paving a layer of isolating film on the transverse plate of the upper panel;
s7.2, immersing the upper panel bamboo web net prepared in the S4.1 into the prepared amino resin adhesive, so that the upper panel bamboo web net is completely coated by the amino resin adhesive; then placing, and paying attention to that the lap joint between the bamboo skin nets of the adjacent upper panels is not less than 50 mm;
s7.3, uniformly spreading the filling material prepared in the S3 on the upper panel bamboo skin net and compacting;
s7.4, circulating S7.2 and S7.3, laying a plurality of layers of upper panel bamboo skin nets adhered with the amino resin adhesive, and laying and pressing filling materials among the layers to form a structural layer;
s7.5, paving the bamboo fiber non-woven fabric soaked by the prepared modified epoxy vinyl ester resin on a template to obtain an upper surface layer;
s7.6, curing and demolding to obtain an upper panel;
s8, assembling:
s8.1, taking the lower panel prepared in the S6, the upper panel prepared in the S7 and a plurality of bamboo core tubes prepared in the S5, coating epoxy resin structural adhesive on the bottom surfaces of the bamboo core tubes, and uniformly placing the lower panels perpendicular to the lower panels on the lower panels to be bonded and fixed with the lower panels;
s8.2, coating epoxy resin structural adhesive on the top surface of the bamboo core pipe, and then adhering and fixing the upper panel on the upper end of the bamboo core pipe to obtain the bamboo core board.
The invention provides applications of the bamboo core plate in building buildings and bridges, manufacturing containers, manufacturing solar panels, manufacturing vehicle bodies and ship bodies, and the bamboo core plate comprises a bamboo core plate photovoltaic photo-thermal component applied to the buildings, and the bamboo core plate photovoltaic photo-thermal component comprises:
the bamboo core plate adopts the bamboo core plate;
the photovoltaic photo-thermal component comprises a thermal insulation plate, a capillary network, heat conduction adhesive, a transparent back plate, a photovoltaic cell and a glass cover plate from bottom to top; the heat insulation plate is arranged on the bamboo core plate for the photovoltaic photo-thermal member, and the capillary network is arranged on the heat insulation plate and used for absorbing heat generated by the photovoltaic cell; the glass cover plate is laminated on the top surface of the photovoltaic cell, and EVA (ethylene vinyl acetate) glue is arranged between the bottom surface of the glass cover plate and the top surface of the photovoltaic cell and between the top surface of the transparent back plate and the bottom surface of the photovoltaic cell; the heat insulation plate is made of polyurethane foam;
still including being applied to the biological solid carbon planting wall structure of bamboo core in the building, it includes:
the bamboo core board is arranged on the outer decorative layer; the bamboo core plate comprises the bamboo core plate and functional filler filled in the cavity inside the bamboo core plate, the functional filler is a heat-insulating material for saving energy and/or a material for bearing load, and the material for bearing load comprises bamboo, bamboo fiber, concrete and steel;
biological carbon fixation planting adopts system, it includes: the interior of the heat-insulating layer body is provided with a cavity, and the ventilation and water-supplementing system is arranged in the cavity; the rainwater tank is arranged at the top of the outer decorative layer, the water storage tank is arranged at the lower end of the outer decorative layer, the planting tank is arranged at the lower part of the outer decorative layer, and the ventilation and water supplement system is used for introducing rainwater collected by the rainwater tank into the water storage tank; the intelligent control plant planting and water spraying device is used for carrying out drip irrigation on the plants planted in the planting groove; the drip irrigation operation flow comprises the following steps: firstly, injecting water into a water storage tank, wherein the injected water comprises rainwater collected by a rainwater tank, regenerated water after sewage treatment and self-drinking water, and simultaneously injecting water soluble fertilizer; the intelligent control plant planting and water spraying device comprises a water pump and a hose, wherein the input end of the water pump is connected with the water storage tank, the output end of the water pump is connected with one end of the hose, and the other end of the hose is provided with a spray head; the intelligent control plant planting and water spraying device also comprises a connecting rod and a sliding block connected with the connecting rod, one end of the hose, which is provided with a spray head, is fixedly arranged on the sliding block, the water pump is started to fill water to the hose, and the connecting rod and the sliding block are driven to drive the spray head of the hose to drip along the plants; a sensor is arranged in the planting soil, the sensor detects planting related parameters in real time and feeds the planting related parameters back to the control chip, and the control chip selects when the drip irrigation is finished and when the drip irrigation is needed again according to data fed back by the sensor; a water level sensor is arranged in the water storage tank, the water level sensor detects the water level in real time and feeds the water level back to the control chip, and the control chip selects when the water storage tank needs to be added with water according to data fed back by the water level sensor; all drip irrigation operations are intelligently controlled by a control chip.
The invention provides the application of the preparation process of the bamboo core board in the preparation of round components, wherein the round components comprise a wind power tower, a pipe gallery, a water tower, a water pipe, an air pipe, a sightseeing tower and the like, and the preparation operation comprises the process of S5 in the preparation process; the method is specifically applied to manufacturing a wind power tower, and the wind power tower is formed by compounding an inner liner, a bamboo skin winding structure layer and an outer protective layer from inside to outside in sequence; the inner liner layer and the outer protective layer are both formed by compounding bamboo fiber non-woven fabrics and epoxy vinyl ester resin; the bamboo skin winding structure layer is formed by winding a plurality of layers of bamboo skin nets soaked with amino resin; the outer protective layer is formed by winding a bamboo fiber non-woven fabric soaked by prepared epoxy vinyl ester resin on a bamboo skin winding structure layer, and winding a plurality of layers to reach the design thickness of the outer protective layer, the bamboo skin net winding process is a process for preparing the bamboo core pipe by applying S5, and the winding process of the pipe core pipe has wide application prospect.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the bamboo core board provided by the invention is made of bamboo, is a natural solution, is beneficial to increasing carbon sink to control greenhouse gas emission, is also beneficial to improving the capability of adapting to climate change, and protects an ecological natural system.
(2) According to the bamboo core board provided by the invention, the two-dimensional plane structure of the existing bamboo single-layer flat board or multilayer simple superposed flat board is made into the three-dimensional space structure combining the panel and the core pipe, so that the mechanical property is greatly improved, the application range is expanded, and the performance stability is improved after long-term use.
(3) The preparation process of the bamboo core board provided by the invention has the advantages of no environmental pollution in the production and construction processes, convenient transportation, short construction period and low manufacturing cost.
(4) The bamboo core board provided by the invention adopts bamboo as a main raw material, and has renewable resources and less resource limitation.
(5) The bamboo core board is made of bamboo which is light in weight, high in strength and good in toughness, and the characteristic of high axial tensile strength of the bamboo is fully exerted by the process of weaving bamboo splits into bamboo split nets and winding the bamboo split nets into core pipes.
Drawings
Fig. 1 is an isometric view of a bamboo core panel of example 1 of the present invention;
fig. 2 is a schematic longitudinal sectional view of a bamboo core board according to embodiment 1 of the present invention;
fig. 3 is a schematic axonometric view of the arrangement position of the bamboo core tube in the bamboo core plate of the embodiment 1 of the invention;
fig. 4 is a schematic cross-sectional view of an upper panel in a bamboo core board according to embodiment 1 of the present invention;
FIG. 5 is a schematic cross-sectional view of a lower panel of a bamboo core board according to embodiment 1 of the present invention;
fig. 6 is an isometric view of a bamboo core tube in a bamboo core panel of example 1 of the present invention;
fig. 7 is a schematic longitudinal sectional view of a bamboo core tube in a bamboo core board according to embodiment 1 of the present invention;
fig. 8 is an isometric view of a bamboo core panel photovoltaic photothermal element according to example 2 of the present invention;
fig. 9 is a plan view of a bamboo core sheet photovoltaic photothermal member according to example 2 of the present invention;
FIG. 10 is a sectional view taken along line A-A of FIG. 9;
fig. 11 is an exploded view of a photovoltaic photothermal element according to example 2 of the present invention;
fig. 12 is an isometric view of a bamboo core board biological carbon sequestration planting wall structure in accordance with embodiment 3 of the present invention;
fig. 13 is a block diagram of a drip irrigation process according to example 3 of the present invention.
FIG. 14 is a schematic view of a tower structure of a wind turbine according to example 4 of the present invention.
Description of reference numerals:
1-upper panel, 1A-upper panel structure layer substrate, 1B-upper panel filling material layer, 1C-upper panel, 2-lower panel, 2A-lower panel structure layer substrate, 2B-lower panel filling material layer, 2C-bottom layer, 3-bamboo core tube, 3A-inner liner, 3B-winding layer, 3C-outer surface layer, 3D-upper end reinforcing plug, 3E-lower end reinforcing plug, 3F-reinforcing layer, 4A-bamboo core plate, 4B-photovoltaic photo-thermal component, 4B 1-thermal insulation board, 4B 2-capillary network, 4B 3-heat conducting bonding glue, 4B 4-transparent back plate, 4B5-EVA glue, 4B 6-photovoltaic cell, 4B 7-glass cover plate, 5A 1-inner decorative plate, 5A 2-bamboo core board, 5A 3-waterproof layer, 5A 4-insulating layer, 5A 5-outer decorative layer, 5B 1-ventilation and water-supplement system, 5B 2-rainwater tank, 5B 3-water storage tank, 5B 4-planting tank, 6A-inner liner layer, 6B-thin bamboo strip winding structure layer and 6C-outer protective layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "first," "second," "third," "fourth," and the like in the description and claims of the present invention and in the above-described drawings (if any) are intended to distinguish between the referenced items. For a scheme with a time sequence flow, the term expression does not need to be understood as describing a specific sequence or a sequence order, and for a scheme of a device structure, the term expression does not have distinction of importance degree, position relation and the like.
Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements specifically listed, but may include other steps or elements not expressly listed that are inherent to such process, method, article, or apparatus or that are added to such process, method, article, or apparatus based on the optimization concepts of the present invention.
The invention will be described in further detail below with reference to the drawings and specific examples of the specification:
example 1 as shown in fig. 1 to 5: a bamboo core panel, comprising:
a bamboo upper panel 1, a bamboo lower panel 2, and a plurality of bamboo core tubes 3 arranged and fixed between the upper panel 1 and the lower panel 2 at intervals; the bamboo core tube 3 is a circular tube hollow structure with two closed ends, two ends are respectively fixedly connected with the upper panel 1 and the lower panel 2, and the upper panel 1, the lower panel 2 and the bamboo core tube 3 are all made of bamboo skin composite materials;
as shown in fig. 6 and 7: the bamboo core pipe 3 comprises an inner liner layer 3A, a winding layer 3B and an outer surface layer 3C from inside to outside, the top surface of the upper end is provided with a reinforced plug 3D, the bottom surface of the lower end is provided with a reinforced plug 3E, and the outer side walls of the end parts of the upper end and the lower end are circumferentially provided with reinforced layers 3F; the winding layer 3B is a circular tube-shaped object formed by laminating and winding a plurality of bamboo skin nets impregnated with amino resin adhesive, the inner liner layer 3A and the outer surface layer 3C are both bamboo fiber non-woven fabrics soaked with modified epoxy vinyl ester resin, the inner liner layer 3A is attached to and fixedly connected with the inner wall of the winding layer 3B, and the outer surface layer 3C is attached to and fixedly connected with the outer wall of the winding layer 3B; the upper end top surface reinforcing plug 3D and the lower end bottom surface reinforcing plug 3E are made of carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin; the material of the reinforcing layer 3F is carbon fiber mesh cloth soaked with epoxy resin and/or glass fiber mesh cloth soaked with epoxy resin;
the modified epoxy vinyl ester resin comprises the following components in parts by mass: 100 parts by weight of epoxy vinyl ester resin, 3-5 parts by weight of toughening agent, 12-15 parts by weight of diluent and 1-3 parts by weight of carbon nanofiber;
as shown in fig. 6: the lower panel 2 consists of a structural layer and a bottom layer 2C from top to bottom, the bottom layer 2C is a bamboo fiber non-woven fabric soaked with epoxy vinyl ester resin, the structural layer is paved with a plurality of layers of bamboo skin nets adhered with amino resin adhesives, filling materials are paved among the layers to obtain a lower panel filling material layer 2B, and the lower panel filling material layer is compounded and heated and cured; the bottom layer 2C is attached to and fixedly connected with the bottom surface of the structural layer; in this embodiment, the bamboo skin net adhered with the amino resin adhesive is referred to as a lower panel structure layer substrate 2A; the dimension specification of the lower panel 2, the container type house is manufactured, the international standard of the transportation container is adopted, 2438 is taken as a modulus, the conventional building is manufactured, and the conventional building is determined according to the national specified building modulus;
as shown in fig. 4: the upper panel 1 consists of an upper surface layer 1C and a structural layer from top to bottom, wherein the upper surface layer 1C is a bamboo fiber non-woven fabric soaked with epoxy vinyl ester resin, the structural layer is formed by laying a plurality of layers of bamboo skin nets adhered with amino resin adhesives, and filling materials are laid between the layers to obtain an upper panel filling layer 1B which is compounded and heated and cured; in this embodiment, the bamboo skin net adhered with the amino resin adhesive is referred to as an upper panel structure layer substrate 1A; the dimension specification of the upper panel 1, the container type house is manufactured, the international standard of the transportation container is adopted, 2438 is taken as a modulus, the conventional building is manufactured, and the conventional building is determined according to the national specified building modulus;
the filling material is a mixture of bio-based particles and resin, the total mass of the bio-based particles accounts for 20-40% of the total mass of the filling material, and the bio-based particles are one or more of bamboo powder, wood powder, straw powder and vine powder.
The embodiment also provides a preparation process of the bamboo core board, which comprises the following steps:
s1, preparing bamboo splits:
s1.1, splitting an original bamboo material into bamboo chips, removing green and yellow, manufacturing a plurality of thin bamboo strips with equal length according to needs, wherein the thickness of the removed yellow bamboo chips is 0.2-0.4 mm, the thickness of the removed green bamboo chips is 0.1-0.3 mm, the width of each thin bamboo strip is 0.2-2 mm, and drying the thin bamboo strips after degreasing treatment until the water content is lower than 10% to obtain degreased thin bamboo strips;
s1.2, selecting degreased bamboo strips with the tensile strength of more than or equal to 90MPa, soaking in a 5% NaOH solution for 6 hours, taking out, drying, controlling the water content to be below 10% to obtain alkali-dipped bamboo strips, and selecting the alkali-dipped bamboo strips with the tensile strength of more than or equal to 90MPa for later use;
s2, preparing a resin material: the resin used for impregnating the bamboo skin layer or the particle layer resin is one of epoxy resin, amino resin, phenolic resin, unsaturated polyester resin, polyurethane resin, unsaturated polyester resin or polyurethane resin.
S2.1, mixing and uniformly stirring 100 parts of amino resin, 15-30 parts of biological filler and 1-3 parts of carbon nanofiber by mass to obtain an amino resin adhesive for later use;
s2.2, mixing and uniformly stirring 100 parts of epoxy vinyl ester resin, 3-5 parts of toughening agent, 12-15 parts of diluent and 1-3 parts of carbon nanofiber by mass to obtain modified epoxy vinyl ester resin for later use;
s3, preparing a filling material:
mixing the bio-based particles with resin and uniformly stirring to obtain a filling material for later use; the bio-based particles are one or more of bamboo powder, wood powder, straw powder and vine powder, and the total mass of the bio-based particles accounts for 20-40% of the total mass of the filling material;
s4, preparing a bamboo skin net:
s4.1, weaving the bamboo strips into bamboo strip nets for the upper panel and the lower panel at intervals of 0.1-1 mm, and respectively preparing and stacking the bamboo strip nets according to the designed dimensions of the bamboo strip nets for the upper panel and the lower panel. The method comprises the steps of manufacturing a box-type house, adopting the international standard of transport and packing, taking 2438 as a modulus, manufacturing a conventional building, and determining according to the building modulus specified by the state. The lapping among the bamboo split nets is more than or equal to 50mm, the lapping deviation of each bamboo split sheet in the width direction is not more than 5mm, and the lapping angle deviation is not more than 5 degrees;
s4.2, selecting a bamboo skin net for the core pipe, wherein the width of the bamboo skin net is 1-50 mm, and the height of the core pipe is properly selected, and the bamboo skin net is rolled according to the interval of 0.1-1 mm, so that the core pipe is suitable for various core pipes with different heights, and the core pipe can be prepared into a single pipe, double pipes and multiple pipes by using the bamboo skin net;
s5, preparing a bamboo core tube:
s5.1, manufacturing an inner liner, namely wrapping a layer of film or coating a release agent on the forming tool circular tube in order to facilitate the forming tool circular tube to be drawn out, and then wrapping the forming tool circular tube with bamboo fiber non-woven fabric and epoxy vinyl ester resin in a circumferential direction to obtain the inner liner;
s5.2, manufacturing a winding layer, namely soaking the core pipe prepared in the S4.2 in resin by using a bamboo skin net to enable a resin material to be adhered to the outer surface of the bamboo skin, simultaneously soaking the resin and winding the bamboo skin, winding the bamboo skin on the inner liner, applying certain compression roller pressure, attaching the resin material to the surface of the bamboo skin and filling the resin material into gaps of the bamboo skin to obtain the winding layer;
s5.3, manufacturing an outer surface layer, and annularly wrapping the winding layer with bamboo fiber non-woven fabric and epoxy vinyl ester resin;
s5.4, manufacturing a reinforcing layer, and annularly wrapping glass fiber mesh cloth soaked with epoxy resin or carbon fiber mesh cloth soaked with epoxy resin at two ends of the bamboo core pipe to obtain the reinforcing layer;
s5.5, plugging two ends, namely, drawing out the circular pipe of the forming tool, moving the bamboo core pipe to the next station, simultaneously moving mechanisms on two sides, coating epoxy resin glue on the top surfaces and the bottom surfaces of two ends of the core pipe, and sticking carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin to plug the two end surfaces;
and S5.6, curing to complete the preparation of the bamboo core pipe.
S6, preparing the following plate:
s6.1, coating a layer of release agent on the surface of the lower template;
s6.2, paving the bamboo fiber non-woven fabric soaked by the prepared epoxy vinyl ester resin on a template to obtain a bottom layer;
s6.3, immersing the lower panel bamboo skin net prepared in the S4.1 into the prepared amino resin, so that the bamboo skin is completely coated by the amino resin; then placing, and paying attention to that the lap joint of the bamboo skin net and the bamboo skin net is not less than 50 mm;
s6.4, uniformly paving the filling material prepared in the S3 on a bamboo skin net and compacting;
s6.5, circulating S6.4 and S6.4, laying a plurality of layers of bamboo skin sheets adhered with amino resin, and laying and pressing filling materials among the layers to form a structural layer;
and S6.6, curing and demolding to obtain the lower panel.
S7, preparing an upper panel:
s7.1, paving a layer of isolating film on the transverse plate of the upper panel;
s7.2, immersing the upper panel bamboo skin net prepared in the S4.1 into prepared amino resin, so that the bamboo skin pieces are completely coated by the amino resin; then placing, and paying attention to that the lap joint of the bamboo skin net and the bamboo skin net is not less than 50 mm;
s7.3, uniformly paving the filling material prepared in the S3 on a bamboo skin net and compacting;
s7.4, circulating S7.2 and S7.3, laying a plurality of layers of bamboo splits adhered with amino resin, and laying and pressing filling materials among the layers to form a structural layer;
s7.5, paving the bamboo fiber non-woven fabric soaked by the prepared epoxy vinyl ester resin on a template to obtain an upper surface layer;
s7.6, curing and demolding to obtain the upper panel.
S8, assembling:
s8.1, taking the upper panel prepared in the S6, the lower panel prepared in the S7 and a plurality of bamboo core tubes prepared in the S5, coating epoxy resin structural adhesive on the bottom surfaces of the bamboo core tubes, and uniformly placing the lower panels perpendicular to the lower panels on the lower panels to be bonded and fixed with the lower panels;
s8.2, coating epoxy resin structural adhesive on the top surface of the bamboo core pipe, and then adhering and fixing the upper panel on the upper end of the bamboo core pipe to obtain the bamboo core board.
The bamboo core board has wide application prospect, and the application fields of the bamboo core board comprise the manufacture of buildings, bridges, containers, solar panels, vehicle bodies, ship bodies and the like. Examples are as follows:
example 2, applied to a roof member of a building, as shown in fig. 8 to 11: a bamboo core panel photovoltaic photothermal element comprising: a bamboo core plate 4A and a photovoltaic photo-thermal component 4B; the photovoltaic photo-thermal component 4B comprises a thermal insulation board 4B1, a capillary network 4B2, heat conduction cementing glue 4B3, a transparent back plate 4B4, EVA glue 4B5, a photovoltaic cell 4B6 and a glass cover plate 4B7 from bottom to top; the heat insulation 4B1 is arranged on the substrate 4A to play a role of heat insulation, in the embodiment, a polyurethane foam material is adopted, and other heat insulation materials can be used for replacement; the bamboo core board 4A adopts the bamboo core board provided in example 1;
the capillary tube net 4B2 is arranged on the polyurethane foam board 4B1, and absorbs heat generated by the photovoltaic cell 4B6 through the heat conduction bonding glue 4B3, the transparent back plate 4B4 and the EVA glue 4B 5;
and the glass cover plate 4B7 is laminated on the top surface of the photovoltaic cell 4B6, and a layer of EVA glue 4B5 is arranged between the glass cover plate and the photovoltaic cell.
Example 3, see fig. 12, fig. 13: be applied to biological solid carbon planting wall structure of bamboo core board of building, it includes: wall structure, biological carbon fixation planting and collecting system;
the wall structure comprises an inner decorative plate 5A1, a bamboo core plate 5A2, a waterproof layer 5A3, a heat insulation layer 5A4 and an outer decorative layer 5A5 which are sequentially arranged from inside to outside; the bamboo core board 5a2 adopts the bamboo core board provided in example 1; a cavity is arranged in the heat-insulating layer 5A 4;
functional filler 5A21 is arranged in a cavity inside the bamboo core plate 5A2, and the functional filler 5A21 can be a heat-insulating material for saving energy and/or bamboo fiber or concrete or steel for bearing load according to engineering requirements;
the biological carbon fixation planting and harvesting system is arranged, and comprises a ventilation and water supplementing system 5B1 which is arranged in a cavity inside the heat insulation layer 5A4, a rainwater tank 5B2 which is arranged at the top of the outer decoration surface layer 5A5, a water storage tank 5B3 which is arranged at the lower end of the outer decoration surface layer 5A5, and a planting tank 5B4 which is arranged at the lower part of the outer decoration surface layer 5A 5; the ventilation and water supplement system 5B1 is used for introducing rainwater collected by the rainwater tank 5B2 into the water storage tank 5B 3;
the intelligent control plant planting and water spraying device is communicated with the water storage tank 5B3 and is used for carrying out drip irrigation on plants planted in the planting tank 5B 4; other alternative devices are suitably arranged.
As shown in fig. 13: the planting drip irrigation operation flow comprises the steps of firstly injecting water into the underground water storage tank 5B3, injecting reclaimed water after sewage treatment of kitchens, bathrooms and the like when rainwater collected by the rainwater tank 5B2 is not full, and injecting self-drinking water and water soluble fertilizer when the rainwater is not full. And starting the water pump to fill water into the hose, and simultaneously driving the connecting rod and the sliding block to drive the hose nozzle to drip along the plants. When the drip irrigation is finished and when the drip irrigation is needed again, the sensor transmits information to the control chip, and when the water storage 5B3 needs to be added with water, the water level sensor transmits information to the control chip. All drip irrigation operations are intelligently controlled by a control chip.
The invention provides application of the bamboo skin winding process of the bamboo core tube, which particularly comprises the application of the bamboo skin winding process in manufacturing circular components such as wind power towers, pipe galleries, water towers, water pipes, air pipes, sightseeing towers and the like. Examples are as follows:
example 4. as shown in fig. 14: a wind tower for use in wind power generation, comprising: the bamboo-skin composite material is formed by sequentially compounding an inner liner layer 6A, a bamboo-skin winding structure layer 6B and an outer protective layer 6C from inside to outside. The inner liner layer 6a with outer inoxidizing coating all is formed by bamboo fibre non-woven fabrics and the compound of epoxy vinyl ester resin. The bamboo skin winding structure layer 6B is formed by winding a plurality of layers of soaked bamboo skin nets with amino resin. The outer protective layer 6C is formed by winding a bamboo fiber non-woven fabric soaked by prepared epoxy vinyl ester resin on a structural layer, and winding a plurality of layers to reach the design thickness of the outer protective layer, the bamboo skin net winding process is a process for preparing a bamboo core pipe by applying S5, and the winding process of the pipe core pipe has wide application prospect.
All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.
The present invention has been described in considerable detail by the general description and the specific examples given above. It should be noted that it is obvious that several variations and modifications can be made to these specific embodiments without departing from the inventive concept, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A bamboo core board and a preparation process and application thereof are characterized in that the bamboo core board comprises:
the composite structural board comprises an upper panel (1) and a lower panel (2), wherein the upper panel (1) comprises an upper surface layer and a structural layer from top to bottom, the structural layer is formed by laminating a plurality of bamboo skin nets and paving and pressing filling materials among the layers, amino resin adhesives are adhered to the surfaces of the bamboo skin nets, the upper surface layer is a bamboo fiber non-woven fabric soaked with modified epoxy vinyl ester resin, and the upper surface layer is adhered to and fixedly connected with the upper surface of the structural layer; the lower panel comprises a structural layer and a bottom layer from top to bottom, the bottom layer is a bamboo fiber non-woven fabric soaked with modified epoxy vinyl ester resin, the structural layer is formed by laminating a plurality of bamboo skin nets and laminating filling materials among the layers, amino resin adhesives are adhered to the surfaces of the bamboo skin nets, and the bottom layer is adhered to and fixedly connected with the lower surface of the structural layer of the lower panel;
locate upper panel (1) with between lower panel (2), and perpendicular to respectively upper panel (1) with a plurality of bamboo matter core pipe (3) of panel (2) down, bamboo matter core pipe (3) are hollow pipe structure, the upper end of bamboo matter core pipe (3) with the bottom surface fixed connection of upper panel (1), the lower extreme of bamboo matter core pipe (3) with the top surface fixed connection of panel (2) down.
2. A bamboo core panel as claimed in claim 1, wherein:
the bamboo core pipe (3) comprises an inner liner layer, a winding layer and an outer surface layer from inside to outside, the winding layer is a circular tube-shaped object formed by laminating and winding a plurality of bamboo split nets impregnated with amino resin adhesives, the inner liner layer and the outer surface layer are both bamboo fiber non-woven fabrics soaked with modified epoxy vinyl ester resin, the inner liner layer is attached to and fixedly connected with the inner wall of the winding layer, and the outer surface layer is attached to and fixedly connected with the outer wall of the winding layer;
the top surface and the bottom surface of the two ends of the bamboo core pipe (3) are respectively provided with a reinforcing plug, and the reinforcing plugs are made of carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin;
reinforcing layers are circumferentially arranged on the outer side walls of the end parts of the two ends of the bamboo core pipe (3), and the reinforcing layers are made of carbon fiber gridding cloth soaked with epoxy resin and/or glass fiber gridding cloth soaked with epoxy resin.
3. The bamboo core board as claimed in claims 1 and 2, wherein the modified epoxy vinyl ester resin comprises the following components in parts by mass:
100 parts of epoxy vinyl ester resin, 3-5 parts of toughening agent, 12-15 parts of diluent and 1-3 parts of carbon nanofiber.
4. The bamboo core board as claimed in claim 1, wherein the filler is a mixture of bio-based particles and resin, the total mass of the bio-based particles is 20-40% of the total mass of the filler, and the bio-based particles are one or more of bamboo powder, wood powder, straw powder and cane powder.
5. The preparation process of the bamboo core board is characterized by comprising the following steps:
s1, preparing bamboo splits:
s1.1, splitting an original bamboo material into bamboo chips, removing green and yellow, manufacturing a plurality of thin bamboo strips with equal length according to needs, wherein the thickness of the removed yellow bamboo chips is 0.2-0.4 mm, the thickness of the removed green bamboo chips is 0.1-0.3 mm, the width of each thin bamboo strip is 0.2-2 mm, and drying the thin bamboo strips after degreasing treatment until the water content is lower than 10% to obtain degreased thin bamboo strips;
s1.2, selecting the degreased bamboo strips with the tensile strength of more than or equal to 90MPa, soaking the degreased bamboo strips in a 5% NaOH solution for 6 hours, taking out the degreased bamboo strips, drying the degreased bamboo strips, controlling the water content to be below 10% to obtain alkali-dipped bamboo strips, and selecting the alkali-dipped bamboo strips with the tensile strength of more than or equal to 90MPa for later use;
s2, preparing a resin material:
the resin or particle layer resin used for impregnating the bamboo skin layer is one of epoxy resin, amino resin, phenolic resin, unsaturated polyester resin, polyurethane resin, unsaturated polyester resin or polyurethane resin;
s2.1, mixing and uniformly stirring 100 parts of amino resin, 15-30 parts of biological filler and 1-3 parts of carbon nanofiber by mass to obtain an amino resin adhesive for later use;
s2.2, mixing and uniformly stirring 100 parts of epoxy vinyl ester resin, 3-5 parts of toughening agent, 12-15 parts of diluent and 1-3 parts of carbon nanofiber by mass to obtain modified epoxy vinyl ester resin for later use;
s3, preparing a filling material:
mixing the bio-based particles with resin and uniformly stirring to obtain a filling material for later use; the bio-based particles are one or more of bamboo powder, wood powder, straw powder and vine powder, and the total mass of the bio-based particles accounts for 20-40% of the total mass of the filling material;
s4, preparing a bamboo skin net:
s4.1, weaving the bamboo splits obtained in the step S1.2 according to the interval of 0.1-1 mm by using a bamboo split net for the upper panel and the lower panel, and respectively preparing and stacking the bamboo splits according to the designed size specification of the bamboo split net for the upper panel and the lower panel; manufacturing a mounting box type house, adopting an international standard of a transport mounting box, taking 2438 as a modulus, manufacturing a conventional building, and determining according to the building modulus specified by the state; the lapping between the adjacent upper panel bamboo skin nets and the adjacent lower panel bamboo skin nets is more than or equal to 50mm, the lapping deviation of each bamboo skin sheet in the width direction is not more than 5mm, and the lapping angle deviation is not more than 5 degrees;
s4.2, properly selecting the width of the bamboo skin net which is 1-50 mm according to the height of the core pipe, and rolling according to the interval of 0.1-1 mm to obtain the bamboo skin net for the core pipe; in order to be suitable for core pipes with various heights, the core pipe can be prepared into a single double-root pipe or a plurality of double-root pipes by using a bamboo skin net;
s5, preparing a bamboo core tube:
s5.1, manufacturing an inner liner, namely wrapping a layer of film or coating a release agent on the forming tool circular tube in order to facilitate the forming tool circular tube to be drawn out, and then wrapping the forming tool circular tube with bamboo fiber non-woven fabric and epoxy vinyl ester resin in a circumferential direction to obtain the inner liner;
s5.2, manufacturing a winding layer, namely soaking the bamboo skin net for the core pipe prepared in the step S4.2 in resin, so that a resin material is adhered to the outer surface of the bamboo skin net for the core pipe, the resin soaking and the winding of the bamboo skin net for the core pipe are carried out simultaneously, the bamboo skin net is wound on the inner liner, certain compression roller pressure is applied, the resin material is attached to the surface of the bamboo skin net for the core pipe and is filled in gaps of the bamboo skins, and the winding layer is obtained;
s5.3, manufacturing an outer surface layer, and annularly wrapping the winding layer with bamboo fiber non-woven fabric and epoxy vinyl ester resin;
s5.4, manufacturing a reinforcing layer, and annularly wrapping glass fiber mesh cloth soaked with epoxy resin or carbon fiber mesh cloth soaked with epoxy resin at two ends of the core pipe to obtain the reinforcing layer;
s5.5, plugging two ends, namely, drawing out a circular pipe of the forming tool, moving the core pipe to the next station, simultaneously moving mechanisms on two sides, coating epoxy resin glue on the top surfaces and the bottom surfaces of two ends of the core pipe, and sticking carbon fiber mesh cloth or glass fiber mesh cloth soaked with epoxy resin to plug the two end surfaces;
s5.6, curing to complete the preparation of the bamboo core pipe;
s6, preparing the following plate:
s6.1, coating a layer of release agent on the surface of the lower template;
s6.2, paving the prepared bamboo fiber non-woven fabric soaked by the modified epoxy vinyl ester resin on a template to obtain a bottom layer;
s6.3, immersing the lower panel bamboo skin net prepared in the S4.1 into the prepared amino resin adhesive, so that the lower panel bamboo skin net is completely coated by the amino resin adhesive; then placing, and paying attention to that the lap joint between the adjacent lower panel bamboo skin nets is not less than 50 mm;
s6.4, uniformly spreading the filling material prepared in the S3 on the lower panel bamboo split net and compacting;
s6.5, circulating S6.3 and S6.4, laying a plurality of layers of the lower panel bamboo skin nets adhered with the amino resin adhesive, and laying and pressing the filling materials among the layers to form a structural layer;
s6.6, curing and demolding to obtain a lower panel;
s7, preparing an upper panel:
s7.1, paving a layer of isolation film on the transverse plate of the upper panel;
s7.2, immersing the upper panel bamboo woven mesh prepared in the S4.1 into the prepared amino resin adhesive, so that the upper panel bamboo woven mesh is completely coated by the amino resin adhesive; then placing, and paying attention to that the lap joint between the adjacent upper panel bamboo skin nets is not less than 50 mm;
s7.3, uniformly spreading the filling material prepared in the S3 on the upper panel bamboo split net and compacting;
s7.4, circulating S7.2 and S7.3, laying a plurality of layers of the upper panel bamboo skin nets adhered with the amino resin adhesive, and laying and pressing the filling materials among the layers to form a structural layer;
s7.5, paving the prepared bamboo fiber non-woven fabric soaked by the modified epoxy vinyl ester resin on a template to obtain an upper surface layer;
s7.6, curing and demolding to obtain an upper panel;
s8, assembling:
s8.1, taking the lower panel prepared in the S6, the upper panel prepared in the S7 and the bamboo core pipes prepared in the S5, coating epoxy resin structural adhesive on the bottom surfaces of the bamboo core pipes, and uniformly placing the lower panels perpendicular to the lower panels to be adhered and fixed with the lower panels;
s8.2, coating epoxy resin structural adhesive on the top surface of the bamboo core pipe, and then adhering and fixing the upper panel on the upper end of the bamboo core pipe to obtain the bamboo core board.
6. Use according to claim 1, characterized in that: the bamboo core board is building the application in building and bridge, preparation container, preparation solar panel, preparation automobile body and hull, including being applied to bamboo core board photovoltaic light and heat component in the building, its characterized in that: the bamboo core board photovoltaic photo-thermal component comprises:
a bamboo core board (4A), the bamboo core board (4A) being the bamboo core board of claim 1;
the photovoltaic photo-thermal component (4B) comprises a thermal insulation board (4B1), a capillary tube net (4B2), a heat conduction bonding glue (4B3), a transparent back plate (4B4), a photovoltaic cell (4B6) and a glass cover plate (4B7) from bottom to top; the heat insulation board (4B1) is arranged on the bamboo core board (4A), and the capillary network (4B2) is arranged on the heat insulation board (4B1) and used for absorbing heat generated by the photovoltaic cell (4B 6); the glass cover plate (4B7) is laminated at the top surface of the photovoltaic cell (4B6), and EVA glue (4B5) is arranged between the bottom surface of the glass cover plate (4B7) and the top surface of the photovoltaic cell (4B6) and between the top surface of the transparent back plate (4B4) and the bottom surface of the photovoltaic cell (4B 6); the material of the heat insulation board (4B1) comprises polyurethane foam;
still including being applied to the biological solid carbon planting wall structure of bamboo core board in the building, its characterized in that, the biological solid carbon planting wall structure of bamboo core board includes:
the bamboo sandwich board comprises an inner decorative board (5A1), a bamboo core board (5A2), a waterproof layer (5A3), a heat preservation layer (5A4) and an outer decorative layer (5A5) which are arranged from inside to outside in sequence; the bamboo core board (5A1) comprises the bamboo core board of claim 1 and functional filler filled in the inner cavity of the bamboo core board, the functional filler is an insulation material for saving energy and/or a material for bearing load, and the material for bearing load comprises bamboo, bamboo fiber, concrete and steel;
biological carbon fixation planting adopts system, it includes: the water storage and cultivation device comprises a ventilation and water supplementing system (5B1), a rainwater tank (5B2), a water storage pool (5B3) and a planting tank (5B4), wherein a cavity is formed in the body of the heat preservation layer (5A4), and the ventilation and water supplementing system (5B1) is arranged in the cavity; the rainwater tank (5B2) is arranged at the top of the outer decorative layer (5A5), the water storage tank (5B3) is arranged at the lower end of the outer decorative layer (5A5), the planting tank (5B4) is arranged at the lower part of the outer decorative layer (5A5), and the ventilation and water charging system (5B1) is used for introducing rainwater collected by the rainwater tank (5B2) into the water storage tank (5B 3); the intelligent control plant planting and water spraying device is further included, the input end of the intelligent control plant planting and water spraying device is communicated with the water storage tank (5B3), and the intelligent control plant planting and water spraying device is used for carrying out trickle irrigation on plants planted in the planting groove (5B 4); the drip irrigation operation flow comprises the following steps: firstly, injecting water into the water storage tank (5B3), wherein the injected water comprises rainwater collected by the rainwater tank (5B2), regenerated water after sewage treatment and tap water, and simultaneously injecting water-soluble fertilizer; the intelligent control plant planting and water spraying device comprises a water pump and a hose, wherein the input end of the water pump is connected with the water storage tank (5B3), the output end of the water pump is connected with one end of the hose, and the other end of the hose is provided with a spray head; the intelligent control plant planting and water spraying device further comprises a connecting rod and a sliding block connected with the connecting rod, one end, provided with the spray nozzle, of the hose is fixedly arranged on the sliding block, the water pump is started to fill water into the hose, and meanwhile the connecting rod and the sliding block are driven to drive the spray nozzle of the hose to drip along plants; a sensor is arranged in the planting soil, the sensor detects planting related parameters in real time and feeds back the planting related parameters to a control chip, and the control chip selects when drip irrigation is finished and when drip irrigation is needed again according to data fed back by the sensor; a water level sensor is arranged in the water storage tank, the water level sensor detects the water level in real time and feeds the water level back to a control chip, and the control chip selects when the water storage tank needs to be added with water according to data fed back by the water level sensor; all drip irrigation operations are intelligently controlled by the control chip.
7. Use according to claim 1, characterized in that: use of the process of claim 5 for the preparation of a bamboo core for the manufacture of circular structural members, said circular structural members comprising wind towers, pipe galleries, water towers, water pipes, wind pipes, sightseeing towers, the manufacturing operation comprising the process of S5 of claim 5;
the method is specifically applied to manufacturing a wind power tower, and the wind power tower is formed by compounding an inner liner layer (6A), a bamboo skin winding structure layer (6B) and an outer protective layer (6C) from inside to outside in sequence; the inner liner layer (6A) and the outer protective layer (6C) are both formed by compounding bamboo fiber non-woven fabrics and epoxy vinyl ester resin; the bamboo skin winding structure layer (6B) is formed by winding a plurality of layers of bamboo skin nets soaked with amino resin; the outer protective layer (6C) is formed by winding a bamboo fiber non-woven fabric soaked by prepared epoxy vinyl ester resin on the bamboo skin winding structure layer (6B) and winding a plurality of layers to reach the design thickness of the outer protective layer, the bamboo skin net winding process is a process for preparing the bamboo core pipe by applying S5, and the winding process of the pipe core pipe has wide application prospect.
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| CN114851321B (en) | 2024-02-09 |
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