CN108214713B - Preparation method of bamboo fiber bundle toughened impact-resistant bamboo board - Google Patents
Preparation method of bamboo fiber bundle toughened impact-resistant bamboo board Download PDFInfo
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- CN108214713B CN108214713B CN201810079197.0A CN201810079197A CN108214713B CN 108214713 B CN108214713 B CN 108214713B CN 201810079197 A CN201810079197 A CN 201810079197A CN 108214713 B CN108214713 B CN 108214713B
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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
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
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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
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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
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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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
- B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
- B27L1/08—Debarking or removing vestiges of branches from trees or logs; Machines therefor using rotating rings
-
- 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
Abstract
The invention discloses a preparation method of a bamboo fiber bundle toughened impact-resistant bamboo board, which comprises the following steps: a rolling fiber opening method and a mechanical dredging method are utilized: slicing bamboo, and removing non-fiber tissue components in the bamboo slices under the action of physical force and heat by using rolling equipment (the bamboo can be subjected to cooking and soaking or thermal action), so as to finally obtain fasciculate fibers; preparing a bamboo fiber bundle hot-pressed board by using the bamboo fiber bundle, and then sawing into a bamboo fiber bundle sheet A with the thickness of 3 mm; splicing bamboo strips at the sides and hot-pressing into a bamboo core plate B with the thickness of 5 mm; impregnating the bamboo fiber bundles with epoxy resin to prepare a fiber toughening layer C; the materials are assembled according to the sequence of ACBCA and are cold-pressed to prepare the bamboo board with excellent impact resistance. According to the invention, the bamboo fiber bundles are utilized to toughen the bamboo board, so that the density of the board can be effectively controlled, the impact resistance of the board is improved, the application field of the board is expanded, and the prepared bamboo board has excellent mechanical property, impact resistance and dimensional stability.
Description
Technical Field
The invention relates to the field of composite material preparation, in particular to a preparation method of a bamboo fiber bundle toughening impact-resistant bamboo board.
Background
The bamboo wood is one of important fast-growing and renewable forest resources in China, the bamboo wood grows fast, the lumber formation is early, the yield is high, and the bamboo wood can be continuously utilized in one-time afforestation; as a natural plant material, the material has the characteristics of extremely excellent mechanical property, high specific strength and good toughness, and can not break even if being bent to touch the ground by wind and snow in the growth process, so the material is in good standing of 'plant steel'. Fiber reinforced composites are playing an increasingly important role in advancing industrial technology, improving human quality of life, and the like. The fiber composite material is unique in that the performance which is difficult to be possessed by a single material can be provided, and the greatest advantage is that the material can be endowed with cuttability, so that the product with each specific technical requirement can be optimally designed, and the reliability of the product is ensured to the greatest extent.
The bamboo fiber bundle is used as a natural functional material, natural fibers are directly separated and prepared by adopting a method of combining mechanical physical rolling, silk separation, degumming and opening and carding, have light weight, high strength, good toughness, antibiosis and natural degradation, are ideal raw materials of fiber reinforced composite materials, and can be applied to the industries of textile, non-woven, composite materials, building materials, environment-friendly materials and the like.
Bamboo fiber bundles are greatly different from bamboo bundles, bamboo fibers, bamboo crushed aggregates and the like. Wherein, the bamboo bundles are loose, the gaps among the fibers are large, and the bamboo bundles are mainly used for manufacturing the recombined bamboo floor; the bamboo fiber unit is smaller, the fiber form is shorter, and the bamboo-plastic composite material is mainly manufactured; the bamboo particle has the smallest shape and is mainly used for manufacturing bamboo particle boards (also called bamboo fiber boards); the three utilization forms destroy the original vascular bundle and basic organization structure of the bamboo wood. The bamboo fiber bundle is a bundle fiber with the diameter of 2mm, is in a gathering state of a plurality of fibers, not only keeps a certain tension value, but also has certain flexibility.
Disclosure of Invention
The invention aims to provide a preparation method of a bamboo fiber bundle toughened impact-resistant bamboo board, which utilizes bamboo fibers to be impregnated with epoxy resin as a board reinforcing and toughening unit, utilizes bamboo fiber bundles to manufacture a bamboo fiber bundle thin board with excellent mechanical property, and adopts a core layer made of side-spliced bamboo boards maintaining bamboo toughness.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bamboo fiber bundle toughening impact-resistant bamboo board is prepared by taking bamboo fiber bundles as a toughening material, a side bamboo splicing core board as a core board and a bamboo fiber bundle sheet as a panel through the following steps:
s1, manufacturing bamboo fiber bundles:
cutting bamboo into bamboo tubes with the length of 1-2 m, splitting into bamboo strips with the width of 10 cm, soaking in NaOH aqueous solution with the mass concentration of 1% for 24 hours, and mechanically rolling into bamboo bundles with the width of 15 cm;
pressing the obtained bamboo bundles into flat primary bamboo fiber bundles by using a mechanical fiber splitting method, and then separating into bundle fibers, namely secondary bamboo fiber bundles, through secondary rolling;
s2, manufacturing a bamboo fiber bundle sheet:
drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, and impregnating phenolic resin, wherein the resin impregnation amount is 15% -20%;
drying to water content below 15% after soaking, assembling, hot pressing at 155 deg.C under 4-6Mpa for 10min to obtain a plate with thickness of 10mm, and sawing into bamboo fiber bundle sheet with width of 300mm and thickness of 3 mm;
s3, manufacturing the bamboo core board:
drying bamboo strips with the width of 5mm and the green and yellow removed to the water content of below 10%, coating urea-formaldehyde resin adhesive, and laterally splicing; then hot-pressing for 7min under the conditions that the pressure is 1.2MPa and the temperature is 130-;
s4, manufacturing the bamboo fiber bundle/epoxy resin impregnated composite material:
impregnating epoxy resin with the secondary bamboo fiber bundle, wherein the resin curing agent is a normal-temperature curing agent, the resin impregnation amount is 30% of the weight of the bamboo fiber bundle, and then rolling and paving the bamboo fiber bundle to prepare a bamboo fiber bundle C1 arranged longitudinally and a bamboo fiber bundle C2 arranged transversely;
s5, assembling the bamboo fiber bundle sheet, the bamboo fiber bundle, the bamboo core plate, the bamboo fiber bundle and the bamboo fiber bundle sheet along the grain, processing the board by adopting a cold pressing curing process with the pressure of 2MPa, and performing post-treatment such as edge cutting, sanding and the like on the board according to the use requirement of the board after the processing is finished.
Preferably, the breadth of the longitudinally arranged bamboo fiber bundles C1 and the breadth of the transversely arranged bamboo fiber bundles C2 are both 300mm wide and 1mm long.
Preferably, the breadth of the longitudinally arranged bamboo fiber bundles C1 and the breadth of the transversely arranged bamboo fiber bundles C2 are both 300mm wide and 2mm long.
Preferably, the epoxy resin is one of epoxy resin E51, epoxy resin E44 and epoxy resin E54.
Preferably, the normal temperature type curing agent is one of a normal temperature type curing agent 630, a normal temperature type curing agent 650 and a normal temperature type curing agent 651.
Preferably, the step S5 is performed by following the assembly in the following order:
bamboo fiber bundle sheet-longitudinally arranged bamboo fiber bundles C1-bamboo core plate-longitudinally arranged bamboo fiber bundles C1-bamboo fiber bundle sheet.
Preferably, the step S5 is performed by following the assembly in the following order:
bamboo fiber bundle sheet-longitudinally arranged bamboo fiber bundles C1-bamboo core board-transversely arranged bamboo fiber bundles C2-bamboo fiber bundle sheet.
Preferably, the step S5 is performed by following the assembly in the following order:
bamboo fiber bundle sheet, transversely arranged bamboo fiber bundles C2, bamboo core plate, transversely arranged bamboo fiber bundles C2 and bamboo fiber bundle sheet.
The invention has the following beneficial effects:
the bamboo fiber bundles are utilized to toughen the bamboo board, so that the density of the board can be effectively controlled, the impact resistance of the board is improved, the application field of the board is expanded, and the prepared bamboo board has excellent mechanical property, impact resistance and dimensional stability; provides a new way for improving the utilization efficiency and the utilization value of the bamboo wood, and has better application prospect.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A preparation method of bamboo fiber bundle toughening impact-resistant bamboo board comprises the following steps:
s1, manufacturing bamboo fiber bundles:
cutting bamboo into bamboo tubes with the length of 2 meters, splitting into bamboo strips with the width of 10 centimeters, soaking in NaOH aqueous solution with the mass concentration of 1% for 24 hours, and mechanically rolling into bamboo bundles with the width of 15 centimeters;
pressing the obtained bamboo bundles into flat primary bamboo fiber bundles by using a mechanical fiber splitting method, and then separating into bundle fibers, namely secondary bamboo fiber bundles, through secondary rolling;
s2, manufacturing a bamboo fiber bundle sheet:
drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, and impregnating phenolic resin, wherein the resin impregnation amount is 15%;
drying to water content below 15% after soaking, assembling, hot pressing at 155 deg.C under 5Mpa for 10min to obtain a board with thickness of 10mm, and sawing into bamboo fiber bundle sheet with width of 300mm and thickness of 3 mm;
s3, manufacturing the bamboo core board:
drying bamboo strips with the width of 5mm and the green and yellow removed to the water content of below 10%, coating urea-formaldehyde resin adhesive, and laterally splicing; then hot pressing for 7min under the conditions of pressure of 1.2MPa and temperature of 130 ℃ to manufacture the bamboo core board with width of 300mm and thickness of 5 mm;
s4, manufacturing the bamboo fiber bundle/epoxy resin impregnated composite material:
the second-level bamboo fiber bundle is used for impregnating epoxy resin E51, the resin curing agent is a normal-temperature curing agent 630, and the resin impregnation amount is 30% of the weight of the bamboo fiber bundle. Then rolling and paving the bamboo fiber bundles to prepare longitudinally arranged bamboo fiber bundles C1 with the breadth of 300mm and the length of 2 mm;
s5, performing grain-following assembly according to the sequence of the bamboo fiber bundle thin plate, the bamboo fiber bundles arranged longitudinally C1, the bamboo core plate, the bamboo fiber bundles arranged longitudinally C1 and the bamboo fiber bundle thin plate, processing the plate by adopting a cold pressing curing process with the pressure of 2MPa, and performing post-treatment such as edge cutting, sanding and the like on the plate according to the use requirement of the plate after the processing is completed.
Through detection, the plate has the following properties: the density of the plate is about 0.75g/cm3The bending strength of the grain is more than 200MPa, the bending modulus is more than 20GPa, and the impact toughness is more than 80kJ/m2The falling weight impact absorption energy is more than 75 kJ.
Example 2
A preparation method of bamboo fiber bundle toughening impact-resistant bamboo board comprises the following steps:
s1, manufacturing bamboo fiber bundles: cutting bamboo into bamboo tubes with the length of 1m, splitting the bamboo tubes into bamboo strips with the width of 10 cm, soaking the bamboo strips in NaOH aqueous solution with the mass concentration of 1% for 24 hours, and mechanically rolling the bamboo strips into bamboo bundles with the width of 15 cm;
the bamboo bundles are pressed into flat primary bamboo fiber bundles by a mechanical fiber splitting method, and then are separated into bundle fibers, namely secondary bamboo fiber bundles, through secondary rolling.
S2, manufacturing a bamboo fiber bundle sheet A: drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, then impregnating phenolic resin, wherein the resin impregnation amount is about 20%, then drying until the water content is below 15%, assembling, hot-pressing for 10min at the temperature of 155 ℃ and under the pressure of 4MPa, wherein the plate thickness is 10mm, and then sawing and splitting into bamboo fiber bundle thin plates with the width of 300mm and the thickness of 3 mm;
s3, manufacturing a bamboo core board B: drying bamboo strips with the width of 5mm and the green and yellow removed to the water content of below 10%, coating urea-formaldehyde resin adhesive, laterally splicing, and hot-pressing at the pressure of 1.2MPa and the temperature of 130 ℃ for 7min to manufacture a board with the width of 300mm and the thickness of 5 mm;
s4, manufacturing a bamboo fiber bundle/epoxy resin impregnated composite material C:
impregnating epoxy resin E44 with the secondary bamboo fiber bundle, wherein the resin curing agent is a normal temperature curing agent 650, and the resin impregnation amount is 35% of the weight of the bamboo fiber bundle; then rolling and paving the bamboo fiber bundles to prepare a longitudinally arranged bamboo fiber bundle C1 and a transversely arranged bamboo fiber bundle C2, wherein the breadth is 300mm in width and 1mm in length;
s5, performing grain-following assembly according to the sequence of the bamboo fiber bundle thin plate, the longitudinally arranged bamboo fiber bundles C1, the bamboo core plate, the transversely arranged bamboo fiber bundles C2 and the bamboo fiber bundle thin plate, processing the plate by adopting a cold pressing curing process with the pressure of 3MPa, and performing post-treatment such as edge cutting, sanding and the like on the plate according to the use requirement of the plate after the processing is completed.
Through detection, the performance of the plate is as follows: the density of the plate is about 0.80g/cm3The bending strength of the grain is more than 180MPa, the bending modulus is more than 18GPa, and the impact toughness is more than 75kJ/m2The falling weight impact absorption energy is more than 90 kJ.
Example 3
A preparation method of bamboo fiber bundle toughening impact-resistant bamboo board comprises the following steps:
s1, bamboo fiber bundle: cutting bamboo into bamboo tubes with the length of 1m, splitting the bamboo tubes into bamboo strips with the width of 10 cm, soaking the bamboo strips in NaOH aqueous solution with the mass concentration of 1% for 24 hours, and mechanically rolling the bamboo strips into bamboo bundles with the width of 15 cm;
the bamboo bundles are pressed into flat primary bamboo fiber bundles by a mechanical fiber splitting method, and then are separated into bundle fibers, namely secondary bamboo fiber bundles, through secondary rolling.
S2, bamboo fiber bundle sheet A: drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, then impregnating phenolic resin, wherein the resin impregnation amount is about 15%, then drying until the water content is below 15%, assembling, hot-pressing for 10min at the temperature of 155 ℃ and under the pressure of 6MPa, wherein the plate thickness is 10mm, and then sawing and splitting into bamboo fiber bundle thin plates with the width of 300mm and the thickness of 3 mm;
s3, bamboo core board B: drying bamboo strips with width of 5mm and green and yellow removed to water content below 10%, coating urea-formaldehyde resin adhesive, and laterally splicing. Then hot pressing for 7min under the conditions of the pressure of 1.2MPa and the temperature of 130 ℃ to manufacture the board with the width of 300mm and the thickness of 5 mm.
S4, bamboo fiber bundle/epoxy resin impregnated composite material C: the second-level bamboo fiber bundle is used for impregnating epoxy resin E51, the resin curing agent is a normal-temperature curing agent 650, the resin impregnation amount is 40% of the weight of the bamboo fiber bundle, and then the bamboo fiber bundle is rolled and laid flat to prepare a bamboo fiber bundle C2 which is transversely arranged, wherein the breadth is 300mm in width and 2mm in length.
S5, performing grain-following assembly according to the sequence of the bamboo fiber bundle sheet, the transversely arranged bamboo fiber bundles C2, the bamboo core board, the transversely arranged bamboo fiber bundles C2 and the bamboo fiber bundle sheet, processing the sheet by adopting a cold pressing and curing process with the pressure of 2MPa, and performing post-treatment such as edge cutting, sanding and the like on the sheet according to the use requirements of the sheet after the processing is completed.
Through detection, the plate has the following properties: the density of the plate is about 0.75g/cm3The bending strength of the grain is more than 160MPa, the bending modulus is more than 16GPa, and the impact toughness is more than 70kJ/m2The falling weight impact absorption energy is more than 80 kJ.
Example 4
A preparation method of bamboo fiber bundle toughening impact-resistant bamboo board comprises the following steps:
s1, manufacturing bamboo fiber bundles: cutting bamboo into bamboo tubes with the length of 1m, splitting into bamboo strips with the width of 10 cm, soaking in 1% NaOH aqueous solution for 24 hours, mechanically rolling into bamboo bundles with the width of 15 cm, and rolling fibers into flat primary bamboo fiber bundles by using a mechanical fiber splitting method. And then the bamboo fiber is rolled and separated into fasciculate fiber, namely a secondary bamboo fiber bundle.
S2, manufacturing a bamboo fiber bundle sheet A: drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, then impregnating phenolic resin, wherein the resin impregnation amount is about 18%, then drying until the water content is below 15%, assembling, hot-pressing for 10min under the conditions of 155 ℃ of temperature and 6MPa of pressure, wherein the plate thickness is 10mm, and then sawing and splitting into bamboo fiber bundle thin plates with the width of 300mm and the thickness of 3 mm.
S3, manufacturing a bamboo core board B: drying bamboo strips with width of 5mm and green and yellow removed to water content below 10%, coating urea-formaldehyde resin adhesive, and laterally splicing. Then hot pressing for 7min under the conditions of the pressure of 1.2MPa and the temperature of 140 ℃ to manufacture the board with the width of 300mm and the thickness of 5 mm.
S4, manufacturing a bamboo fiber bundle/epoxy resin impregnated composite material C: and (3) impregnating the second-level bamboo fiber bundles with epoxy resin E54, wherein the resin curing agent is a normal-temperature curing agent 651, and the impregnating amount of the resin is 45% of the weight of the bamboo fiber bundles. Then the bamboo fiber bundles are rolled and laid flat to prepare bamboo fiber bundles C1 which are longitudinally arranged, and the breadth is 300mm in width and 2mm in length.
S5, performing grain-following assembly according to the sequence of the bamboo fiber bundle sheet, the transversely arranged bamboo fiber bundles C2, the bamboo core board, the transversely arranged bamboo fiber bundles C2 and the bamboo fiber bundle sheet, processing the sheet by adopting a cold pressing and curing process with the pressure of 2.5MPa, and performing post-treatment such as edge cutting, sanding and the like on the sheet according to the use requirements of the sheet after the processing is completed.
Through detection, the plate has the following properties: the density of the plate is about 0.78g/cm3The bending strength of the grain is more than 230MPa, the bending modulus is more than 22GPa, and the impact toughness is more than 90kJ/m2The impact absorption energy of the drop hammer is more than 85 kJ. .
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. A preparation method of a bamboo fiber bundle toughened impact-resistant bamboo board is characterized in that the board is prepared by taking bamboo fiber bundles as a toughening material, a side bamboo splicing core board as a core board and a bamboo fiber bundle thin board as a panel through the following steps:
s1, manufacturing bamboo fiber bundles:
cutting bamboo into bamboo tubes with the length of 1-2 m, splitting into bamboo strips with the width of 10 cm, soaking in NaOH aqueous solution with the mass concentration of 1% for 24 hours, and mechanically rolling into bamboo bundles with the width of 15 cm;
pressing the obtained bamboo bundles into flat primary bamboo fiber bundles by using a mechanical fiber splitting method, and then separating into bundle fibers, namely secondary bamboo fiber bundles, through secondary rolling;
s2, manufacturing a bamboo fiber bundle sheet:
drying the obtained first-stage bamboo fiber bundle until the water content is below 10%, and impregnating phenolic resin, wherein the resin impregnation amount is 15% -20%;
drying to water content below 15% after soaking, assembling, hot pressing at 155 deg.C under 4-6Mpa for 10min to obtain a plate with thickness of 10mm, and sawing into bamboo fiber bundle sheet with width of 300mm and thickness of 3 mm;
s3, manufacturing the bamboo core board:
drying bamboo strips with the width of 5mm and the green and yellow removed to the water content of below 10%, coating urea-formaldehyde resin adhesive, and laterally splicing; then hot-pressing for 7min under the conditions that the pressure is 1.2MPa and the temperature is 130-;
s4, manufacturing the bamboo fiber bundle/epoxy resin impregnated composite material:
impregnating epoxy resin with the secondary bamboo fiber bundle, wherein the resin curing agent is a normal-temperature curing agent, the resin impregnation amount is 30% of the weight of the bamboo fiber bundle, and then rolling and paving the bamboo fiber bundle to prepare a bamboo fiber bundle C1 arranged longitudinally and a bamboo fiber bundle C2 arranged transversely;
s5, assembling the bamboo fiber bundle sheet, the bamboo fiber bundle, the bamboo core plate, the bamboo fiber bundle and the bamboo fiber bundle sheet along the grain, processing the board by adopting a cold pressing and curing process with the pressure of 2MPa, and cutting edges and sanding the board according to the use requirements of the board after the processing is finished.
2. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the breadth of the bamboo fiber bundles C1 arranged longitudinally and the breadth of the bamboo fiber bundles C2 arranged transversely are both 300mm wide and 1mm long.
3. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the breadth of the bamboo fiber bundles C1 arranged longitudinally and the breadth of the bamboo fiber bundles C2 arranged transversely are both 300mm wide and 2mm long.
4. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the epoxy resin is one of epoxy resin E51, epoxy resin E44 and epoxy resin E54.
5. The method for preparing the bamboo fiber bundle-toughened impact-resistant bamboo board as claimed in claim 1, wherein the normal temperature type curing agent is one of a normal temperature type curing agent 630, a normal temperature type curing agent 650 and a normal temperature type curing agent 651.
6. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the step S5 is specifically carried out by assembling along grain in the following order:
bamboo fiber bundle sheet-longitudinally arranged bamboo fiber bundles C1-bamboo core plate-longitudinally arranged bamboo fiber bundles C1-bamboo fiber bundle sheet.
7. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the step S5 is specifically carried out by assembling along grain in the following order:
bamboo fiber bundle sheet-longitudinally arranged bamboo fiber bundles C1-bamboo core board-transversely arranged bamboo fiber bundles C2-bamboo fiber bundle sheet.
8. The method for preparing the bamboo fiber bundle toughened impact-resistant bamboo board as claimed in claim 1, wherein the step S5 is specifically carried out by assembling along grain in the following order:
bamboo fiber bundle sheet, transversely arranged bamboo fiber bundles C2, bamboo core plate, transversely arranged bamboo fiber bundles C2 and bamboo fiber bundle sheet.
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| CN112140275A (en) * | 2020-09-01 | 2020-12-29 | 江苏协和装饰工程有限公司 | Decorative board and its making method |
| CN112372774B (en) * | 2020-11-11 | 2022-07-08 | 中国林业科学研究院木材工业研究所 | Bamboo-based fiber composite material and continuous preparation method thereof |
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| CN204525679U (en) * | 2015-03-28 | 2015-08-05 | 国际竹藤中心 | A kind of bamboo-wood structure composite bottom board of container |
| CN107344381A (en) * | 2017-09-06 | 2017-11-14 | 南京林业大学 | A kind of compound bottom girder of high-strength lorry and its manufacture method |
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| CN108214713A (en) | 2018-06-29 |
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