WO2023065287A1 - 一种竹木纤维复合板材及其制备方法 - Google Patents

一种竹木纤维复合板材及其制备方法 Download PDF

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WO2023065287A1
WO2023065287A1 PCT/CN2021/125581 CN2021125581W WO2023065287A1 WO 2023065287 A1 WO2023065287 A1 WO 2023065287A1 CN 2021125581 W CN2021125581 W CN 2021125581W WO 2023065287 A1 WO2023065287 A1 WO 2023065287A1
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board
plate
bamboo
wood fiber
fiber composite
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PCT/CN2021/125581
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English (en)
French (fr)
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向湘军
王杰超
袁仕云
王水平
刘晶
谭海斌
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湖南恒信新型建材有限公司
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Priority to PCT/CN2021/125581 priority Critical patent/WO2023065287A1/zh
Publication of WO2023065287A1 publication Critical patent/WO2023065287A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
    • E04F13/077—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements composed of several layers, e.g. sandwich panels

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  • the disclosure relates to the technical field of bamboo-wood fiber composite boards, in particular to a bamboo-wood fiber composite board and a preparation method thereof.
  • bamboo-wood fiber composite board is a new type of environmentally friendly material, which has the advantages of high strength, high hardness, non-slip and wear-resistant, not easy to crack, insect-eaten, small water absorption, corrosion resistance, etc.; at the same time, it can also resist static electricity and ultraviolet rays, and provide insulation and heat insulation. , flame retardant; and can resist high temperature of 75°C and low temperature of -40°C, and has a wide range of uses; in the preparation process of bamboo-wood fiber composite board, its structure needs to be designed to ensure its physical properties; the current bamboo-wood fiber composite board Although the board can meet certain usage requirements, it only combines multi-layer boards, and the structure still needs to be improved.
  • the Chinese patent application number is CN202010856366.4, which discloses a bamboo-wood fiber composite board and its preparation method, including: an intermediate support layer, and a reinforcement layer arranged on the upper and lower surfaces of the support layer; the support layer is Micro-foamed bamboo wood fiber composite panel.
  • the bamboo-wood fiber composite board in the above-mentioned patent has the following disadvantages: although it can meet certain requirements for use, it only combines multi-layer boards, and the structure needs to be improved to improve the physical properties of the board, so as to better meet the needs of use.
  • the purpose of this disclosure is in order to solve the shortcoming that exists in the prior art, and propose a kind of bamboo wood fiber composite plate and preparation method thereof.
  • a kind of bamboo-wood fiber composite plate comprises top board, core board and bottom board, and described core board is positioned between top board and core board, and described core board comprises the oblique rib that is V-shaped staggered distribution, and oblique rib is connected with core board respectively
  • the lower triangular cavity and the upper triangular cavity are formed in a staggered distribution with the top plate; and the junction of two adjacent oblique ribs forms a strip plane, and the core plate is connected to the top plate and the bottom plate through the upper and lower strip planes respectively ; There is also a clamping portion between the top plate and the bottom plate.
  • the clamping part includes a first clamping block and a second clamping block
  • the first clamping block is equidistantly arranged on the bottom surface of the top plate close to both sides
  • the second clamping block is equidistantly arranged
  • the first clamping blocks and the second clamping blocks are distributed alternately, and the oblique ribs located on the outermost side are integrally provided with extended ribs, and the outer sides of the extended ribs are evenly distributed.
  • the first clamping block and the second clamping block are alternately clamped in the clamping groove; the height of the first clamping block and the second clamping block is adapted to the thickness of the core board.
  • one end of the plate is provided with a first connecting portion, and the other end of the plate is provided with a second connecting portion;
  • the first connecting portion includes first protrusions that are vertically symmetrical, and the two first protrusions are integrated It is arranged on one side of the top plate and the bottom plate;
  • the second connection part includes a second protrusion symmetrical up and down, and the two second protrusions are integrally arranged on the other side of the top plate and the bottom plate respectively;
  • two first The protrusion is detachably inserted between two second protrusions on another board.
  • the composition of the board includes by weight: 55-60 parts of bamboo fiber powder, 40-60 parts of polyvinyl chloride resin, 40-60 parts of polyethylene, 2-8 parts of diatomaceous earth, foaming 5-10 parts of agent, 2-5 parts of coupling agent, 8-12 parts of stabilizer, 1-2 parts of plasticizer, 1-1.5 parts of antibacterial agent, and 1-1.5 parts of deodorant.
  • a preparation method of bamboo wood fiber composite board comprising the steps of:
  • the core board is used as the middle layer, and the top board and the bottom board are made into upper and lower layers, which are glued, hot pressed, cooled and formed in sequence;
  • the rotation speed of the mixer is controlled at 180-360 r/min, and the stirring time is controlled at 10-15 minutes.
  • the temperature of the twin-screw extruder is controlled at: 175-185°C in the first zone, 185-195°C in the second zone, 195-210°C in the third zone, and 210-190°C in the fourth zone .
  • step S5 in the step S5, cool the top plate, the core plate and the bottom plate in the mold to below 40° C., and then take them out.
  • the glued area at least includes a strip plane, an inner wall of the engaging groove, a bottom surface of the first engaging block and a top surface of the second engaging block.
  • This disclosure can reduce the weight of the board to a certain extent while ensuring the thickness of the board by setting oblique ribs, the lower triangular cavity and the upper triangular cavity, and based on the design of the lower triangular cavity and the upper triangular cavity, the board has a Excellent structural firmness improves the physical properties of the board.
  • first clamping block By setting the first clamping block, the second clamping block and other structures, it can play the role of mutual limit reinforcement, ensure the structural firmness between the top plate, core plate and bottom plate, and improve the physical properties of the board.
  • first connecting part and the second connecting part By providing the first connecting part and the second connecting part, it is convenient to splice and use a plurality of boards in the way that the first connecting part and the second connecting part are plugged into each other, the installation is convenient and fast, and the practicability is improved.
  • Fig. 1 is the structural representation of a kind of bamboo-wood fiber composite board that the present disclosure proposes
  • Fig. 2 is a structural schematic diagram of splicing bamboo-wood fiber composite panels proposed in the present disclosure
  • Fig. 3 is a structural schematic diagram of a first connection part and a second connection part of a bamboo-wood fiber composite board proposed in the present disclosure
  • Fig. 4 is a structural schematic diagram of separation of a bamboo-wood fiber composite board, a top board, a core board, and a bottom board proposed in the present disclosure.
  • top plate 1 top plate, 2 core plate, 3 bottom plate, 4 first connecting part, 5 second connecting part, 6 first protrusion, 7 clamping part, 8 lower triangular cavity, 9 upper triangular cavity, 10 second convex Up, 11 extended ribs, 12 oblique ribs, 13 first clamping blocks, 14 clamping grooves, 15 second clamping blocks, 16 bar-shaped planes.
  • a kind of bamboo wood fiber composite plate and preparation method thereof as shown in Figure 1-4, comprise top board 1, core board 2 and bottom board 3, described core board 2 is positioned between top board 1 and core board 2, described core board 2 includes oblique ribs 12 in a V-shaped staggered distribution, which form a lower triangular cavity 8 and an upper triangular cavity 9 in a staggered distribution between the oblique ribs 12 and the core plate 2 and the top plate 1 respectively;
  • the junction of the ribs 12 forms a strip-shaped plane 16, and the core plate 2 connects with the top plate 1 and the bottom plate 3 through the upper and lower strip-shaped planes 16 respectively;
  • Setting oblique ribs 12, lower triangular cavity 8 and upper triangular cavity 9 and other structures can ensure the thickness of the panel and at the same time reduce the weight of the panel to a certain extent, and based on the design of the lower triangular cavity 8 and upper triangular cavity 9, the panel has excellent
  • the firmness of the structure improves the physical properties of
  • the clamping part 7 includes a first clamping block 13 and a second clamping block 15, and the first clamping block 13 is equidistantly arranged on the top plate 1
  • the bottom surface is close to the two sides, and the second clamping blocks 15 are equidistantly arranged on the top surface of the bottom plate 3 near the two sides.
  • Extended ribs 11 are integrally provided to the ribs 12, and the outside of the extended ribs 11 is provided with evenly distributed locking grooves 14, and the first locking blocks 13 and the second locking blocks 15 are alternately locked in the locking grooves 14;
  • the heights of the first clamping block 13 and the second clamping block 15 are adapted to the thickness of the core board 2; by setting the first clamping block 13, the second clamping block 15 and other structures, the effect of mutual limit and reinforcement can be achieved function, ensuring the firmness of the structure between the top plate 1, the core plate 2 and the bottom plate 3, and improving the physical properties of the plates.
  • one end of the plate is provided with a first connecting portion 4, and the other end of the plate is provided with a second connecting portion 5;
  • the first connecting portion 4 includes a vertically symmetrical first A protrusion 6, two first protrusions 6 are integrally arranged on one side of the top plate 1 and the bottom plate 3; It is integrally arranged on the other side of the top plate 1 and the bottom plate 3; the two first protrusions 6 on one plate are detachably inserted between the two second protrusions 10 on the other plate; by setting the first The connecting part 4 and the second connecting part 5 can be conveniently spliced and used by inserting the first connecting part 4 and the second connecting part 5 with each other. The installation is convenient and fast, and the practicability is improved.
  • the composition of the board includes by weight: 55-60 parts of bamboo fiber powder, 40-60 parts of polyvinyl chloride resin, 40-60 parts of polyethylene, 2-8 parts of diatomaceous earth, hair 5-10 parts of foaming agent, 2-5 parts of coupling agent, 8-12 parts of stabilizer, 1-2 parts of plasticizer, 1-1.5 parts of antibacterial agent, and 1-1.5 parts of deodorant.
  • a preparation method of bamboo wood fiber composite board comprises the steps:
  • S6 take the core board 2 as the middle layer, make the top board 1 and the bottom board 3 into two upper and lower layers, and perform gluing, hot pressing, cooling and forming in sequence;
  • the rotation speed of the mixer is controlled at 180-360 r/min, and the stirring time is controlled at 10-15 minutes.
  • the temperature of the twin-screw extruder is controlled at: 175-185°C in the first zone, 185-195°C in the second zone, 195-210°C in the third zone, and 210-190°C in the fourth zone.
  • the top plate 1, the core plate 2 and the bottom plate 3 are cooled to below 40° C. in the mold, and then taken out.
  • the glued area at least includes the strip plane 16 , the inner wall of the locking groove 14 , the bottom surface of the first locking block 13 and the top surface of the second locking block 15 .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

本公开内容公开了一种竹木纤维复合板材及其制备方法，涉及竹木纤维复合板材技术领域；为了提升板材的物理性能；该板材包括顶板、芯板和底板，所述芯板位于顶板和芯板之间，所述芯板包括呈V型交错分布的斜向肋条，斜向肋条分别与芯板和顶板之间形成交错分布的下三角腔和上三角腔；且两个相邻所述斜向肋条的交界处形成了条形平面；该板材的制备方法包括如下步骤：按重量配比准备原料中各组分，将原料进行混炼；混炼后置于搅拌机中搅拌。本公开内容通过设置斜向肋条、下三角腔和上三角腔等结构，能够保障板材厚度的同时，一定程度减轻板材的重量，并且基于下三角腔和上三角腔的设计，使得板材有着优异的结构牢固度，提升了板材的物理性能。

Description

一种竹木纤维复合板材及其制备方法 技术领域
本公开内容涉及竹木纤维复合板材技术领域，尤其涉及一种竹木纤维复合板材及其制备方法。
背景技术
竹木纤维复合板材是一种新型环保材料，具有高强度、高硬度、防滑耐磨、不易开裂、虫蛀，吸水性小、耐腐蚀等优点；同时还能够抗静电和紫外线，绝缘、隔热、阻燃；并且可抗75℃高温和-40℃的低温，用途十分广泛；竹木纤维复合板材在制备过程中，需要对其结构进行设计，来保障其物理性能；目前的竹木纤维复合板材虽能够满足一定的使用需求，但是其仅仅将多层板材进行结合，在结构上还有待改进。
经检索，中国专利申请号为CN202010856366.4的专利，公开了一种竹木纤维复合板材及其制备方法，包括：中间支撑层，和设置在所述支撑层上下表面的增强层；支撑层为微发泡竹木纤维复合素板。上述专利中的竹木纤维复合板材存在以下不足：虽能够满足一定的使用需求，但是其仅仅将多层板材进行结合，还有待在结构上进行改进，来提升板材的物理性能，从而来更好的满足使用需求。
发明内容
本公开内容的目的是为了解决现有技术中存在的缺点，而提出的 一种竹木纤维复合板材及其制备方法。
为了实现上述目的，本公开内容采用了如下技术方案：
一种竹木纤维复合板材，包括顶板、芯板和底板，所述芯板位于顶板和芯板之间，所述芯板包括呈V型交错分布的斜向肋条，斜向肋条分别与芯板和顶板之间形成交错分布的下三角腔和上三角腔；且两个相邻所述斜向肋条的交界处形成了条形平面，芯板分别通过上下的条形平面与顶板和底板相接；所述顶板和底板之间还设置有卡接部。
优选的：所述卡接部包括第一卡接块和第二卡接块，所述第一卡接块等距设置于顶板底面靠近两侧的位置，所述第二卡接块等距设置于底板顶面靠近两侧的位置，第一卡接块与第二卡接块交错分布，位于最外侧的所述斜向肋条一体式设置有延长肋条，所述延长肋条外侧开设有均匀分布的卡接槽，第一卡接块和第二卡接块交替卡接于卡接槽内；第一卡接块和第二卡接块的高度与芯板的厚度适配。
进一步的：所述板材的一端设置有第一连接部，板材的另一端设置有第二连接部；所述第一连接部包括上下对称的第一凸起，两个第一凸起分别一体式设置于顶板和底板一侧；所述第二连接部包括上下对称的第二凸起，两个第二凸起分别一体式设置于顶板和底板的另一侧；一个板材上的两个第一凸起可拆卸的插接于另一个板材上的两个第二凸起之间。
进一步优选的：所述板材的成分按重量份计包括：竹木纤维粉55～60份、聚氯乙烯树脂40～60份、聚乙烯40～60份、硅藻土2～ 8份、发泡剂5～10份、偶联剂2～5份、稳定剂8～12份、增塑剂1～2份、抗菌剂1～1.5份、除味剂1～1.5份。
一种竹木纤维复合板材的制备方法，包括如下步骤：
S1：按重量配比准备原料中各组分，将原料进行混炼；
S2：混炼后置于搅拌机中搅拌；
S3：搅拌后的物料置于双螺杆挤出机中挤出；
S4：对挤出的物料进行开炼，并置于对应的模具中，压制形成顶板、芯板和底板；
S5：将顶板、芯板和底板冷却定型；
S6：将芯板作为中间层，将顶板和底板为上下两层，依次进行胶合热压、冷却成型；
S7：得到竹木纤维复合板材。
作为本公开内容再进一步的方案：所述S2步骤中，搅拌机的转速控制在180～360r/min，搅拌时间控制在10～15min。
在前述方案的基础上：所述S3步骤中，双螺杆挤出机的温度控制在：一区175～185℃，二区185～195℃，三区195～210℃，四区210～190℃。
在前述方案的基础上优选的：所述S5步骤中，将顶板、芯板和底板在模具中冷却至40℃以下，然后取出。
在前述方案的基础上进一步优选的：所述S6步骤中，胶合的区域至少包括条形平面、卡接槽的内壁、第一卡接块的底面和第二卡接块的顶面。
本公开内容的有益效果为：
1.本公开内容通过设置斜向肋条、下三角腔和上三角腔等结构，能够保障板材厚度的同时，一定程度减轻板材的重量，并且基于下三角腔和上三角腔的设计，使得板材有着优异的结构牢固度，提升了板材的物理性能。
2.通过设置第一卡接块、第二卡接块等结构，能够起到相互限位加固的作用，保障了顶板、芯板和底板之间的结构牢固度，提升了板材的物理性能。
3.通过设置第一连接部和第二连接部，能够便于将多个板材以第一连接部、第二连接部相互插接的方式来拼接使用，安装方便快捷，提升了实用性。
附图说明
图1为本公开内容提出的一种竹木纤维复合板材的结构示意图；
图2为本公开内容提出的一种竹木纤维复合板材拼接的结构示意图；
图3为本公开内容提出的一种竹木纤维复合板材第一连接部与第二连接部的结构示意图；
图4为本公开内容提出的一种竹木纤维复合板材顶板、芯板、底板分离的结构示意图。
图中：1顶板、2芯板、3底板、4第一连接部、5第二连接部、6第一凸起、7卡接部、8下三角腔、9上三角腔、10第二凸起、11延长肋条、12斜向肋条、13第一卡接块、14卡接槽、15第二卡接块、16条形平面。
具体实施方式
下面结合具体实施方式对本专利的技术方案作进一步详细地说明。
下面详细描述本专利的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本专利，而不能理解为对本专利的限制。
在本专利的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本专利和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本专利的限制。
在本专利的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“设置”应做广义理解，例如， 可以是固定相连、设置，也可以是可拆卸连接、设置，或一体地连接、设置。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本专利中的具体含义。
实施例1：
一种竹木纤维复合板材及其制备方法，如图1-4所示，包括顶板1、芯板2和底板3，所述芯板2位于顶板1和芯板2之间，所述芯板2包括呈V型交错分布的斜向肋条12，斜向肋条12分别与芯板2和顶板1之间形成交错分布的下三角腔8和上三角腔9；且两个相邻所述斜向肋条12的交界处形成了条形平面16，芯板2分别通过上下的条形平面16与顶板1和底板3相接；所述顶板1和底板3之间还设置有卡接部7；通过设置斜向肋条12、下三角腔8和上三角腔9等结构，能够保障板材厚度的同时，一定程度减轻板材的重量，并且基于下三角腔8和上三角腔9的设计，使得板材有着优异的结构牢固度，提升了板材的物理性能。
为了提升结构牢固度；如图3、图4所示，所述卡接部7包括第一卡接块13和第二卡接块15，所述第一卡接块13等距设置于顶板1底面靠近两侧的位置，所述第二卡接块15等距设置于底板3顶面靠近两侧的位置，第一卡接块13与第二卡接块15交错分布，位于最外侧的斜向肋条12一体式设置有延长肋条11，所述延长肋条11外侧开设有均匀分布的卡接槽14，第一卡接块13和第二卡接块15交替卡接于卡接槽14内；第一卡接块13和第二卡接块15的高度与芯板 2的厚度适配；通过设置第一卡接块13、第二卡接块15等结构，能够起到相互限位加固的作用，保障了顶板1、芯板2和底板3之间的结构牢固度，提升了板材的物理性能。
为了便于拼接使用；如图2-4所示，所述板材的一端设置有第一连接部4，板材的另一端设置有第二连接部5；所述第一连接部4包括上下对称的第一凸起6，两个第一凸起6分别一体式设置于顶板1和底板3一侧；所述第二连接部5包括上下对称的第二凸起10，两个第二凸起10分别一体式设置于顶板1和底板3的另一侧；一个板材上的两个第一凸起6可拆卸的插接于另一个板材上的两个第二凸起10之间；通过设置第一连接部4和第二连接部5，能够便于将多个板材以第一连接部4、第二连接部5相互插接的方式来拼接使用，安装方便快捷，提升了实用性。
为了提升板材质量；所述板材的成分按重量份计包括：竹木纤维粉55～60份、聚氯乙烯树脂40～60份、聚乙烯40～60份、硅藻土2～8份、发泡剂5～10份、偶联剂2～5份、稳定剂8～12份、增塑剂1～2份、抗菌剂1～1.5份、除味剂1～1.5份。
实施例2：
一种竹木纤维复合板材的制备方法，如图1-4所示，包括如下步骤：
S1：按重量配比准备原料中各组分，将原料进行混炼；
S2：混炼后置于搅拌机中搅拌；
S3：搅拌后的物料置于双螺杆挤出机中挤出；
S4：对挤出的物料进行开炼，并置于对应的模具中，压制形成顶板1、芯板2和底板3；
S5：将顶板1、芯板2和底板3冷却定型；
S6：将芯板2作为中间层，将顶板1和底板3为上下两层，依次进行胶合热压、冷却成型；
S7：得到竹木纤维复合板材。
其中，所述S2步骤中，搅拌机的转速控制在180～360r/min，搅拌时间控制在10～15min。
其中，所述S3步骤中，双螺杆挤出机的温度控制在：一区175～185℃，二区185～195℃，三区195～210℃，四区210～190℃。
其中，所述S5步骤中，将顶板1、芯板2和底板3在模具中冷却至40℃以下，然后取出。
其中，所述S6步骤中，胶合的区域至少包括条形平面16、卡接槽14的内壁、第一卡接块13的底面和第二卡接块15的顶面。
以上所述，为本公开内容较佳的具体实施方式，但并非本公开内容唯一的具体实施方式，本公开内容的保护范围并不局限于此，任何熟悉本领域的技术人员在本公开内容揭露的技术范围内结合现有技术或公众常识，根据本公开内容的技术方案及其发明构思加以等同、等效替换或改变，都应涵盖在本公开内容的保护范围之内。

Claims (9)

  1. 一种竹木纤维复合板材，包括顶板(1)、芯板(2)和底板(3)，其特征在于，所述芯板(2)位于顶板(1)和芯板(2)之间，所述芯板(2)包括呈V型交错分布的斜向肋条(12)，斜向肋条(12)分别与芯板(2)和顶板(1)之间形成交错分布的下三角腔(8)和上三角腔(9)；且两个相邻所述斜向肋条(12)的交界处形成了条形平面(16)，芯板(2)分别通过上下的条形平面(16)与顶板(1)和底板(3)相接；所述顶板(1)和底板(3)之间还设置有卡接部(7)；所述卡接部(7)包括第一卡接块(13)和第二卡接块(15)，所述第一卡接块(13)等距设置于顶板(1)底面靠近两侧的位置，所述第二卡接块(15)等距设置于底板(3)顶面靠近两侧的位置，第一卡接块(13)与第二卡接块(15)交错分布。
  2. 根据权利要求1所述的一种竹木纤维复合板材，其中，位于最外侧的所述斜向肋条(12)一体式设置有延长肋条(11)，所述延长肋条(11)外侧开设有均匀分布的卡接槽(14)，第一卡接块(13)和第二卡接块(15)交替卡接于卡接槽(14)内；第一卡接块(13)和第二卡接块(15)的高度与芯板(2)的厚度适配。
  3. 根据权利要求2所述的一种竹木纤维复合板材，其中，所述板材的一端设置有第一连接部(4)，板材的另一端设置有第二连接部(5)；所述第一连接部(4)包括上下对称的第一凸起(6)，两个第一凸起(6)分别一体式设置于顶板(1)和底板(3)一侧；所述 第二连接部(5)包括上下对称的第二凸起(10)，两个第二凸起(10)分别一体式设置于顶板(1)和底板(3)的另一侧；一个板材上的两个第一凸起(6)可拆卸的插接于另一个板材上的两个第二凸起(10)之间。
  4. 根据权利要求3所述的一种竹木纤维复合板材，其中，所述板材的成分按重量份计包括：竹木纤维粉55～60份、聚氯乙烯树脂40～60份、聚乙烯40～60份、硅藻土2～8份、发泡剂5～10份、偶联剂2～5份、稳定剂8～12份、增塑剂1～2份、抗菌剂1～1.5份、除味剂1～1.5份。
  5. 一种竹木纤维复合板材的制备方法，其中，包括如下步骤：
    S1：按重量配比准备原料中各组分，将原料进行混炼；
    S2：混炼后置于搅拌机中搅拌；
    S3：搅拌后的物料置于双螺杆挤出机中挤出；
    S4：对挤出的物料进行开炼，并置于对应的模具中，压制形成顶板(1)、芯板(2)和底板(3)；
    S5：将顶板(1)、芯板(2)和底板(3)冷却定型；
    S6：将芯板(2)作为中间层，将顶板(1)和底板(3)为上下两层，依次进行胶合热压、冷却成型；
    S7：得到竹木纤维复合板材。
  6. 根据权利要求5所述的一种竹木纤维复合板材的制备方法，其 中，所述S2步骤中，搅拌机的转速控制在180～360r/min，搅拌时间控制在10～15min。
  7. 根据权利要求5所述的一种竹木纤维复合板材的制备方法，其中，所述S3步骤中，双螺杆挤出机的温度控制在：一区175～185℃，二区185～195℃，三区195～210℃，四区210～190℃。
  8. 根据权利要求5所述的一种竹木纤维复合板材的制备方法，其中，所述S5步骤中，将顶板(1)、芯板(2)和底板(3)在模具中冷却至40℃以下，然后取出。
  9. 根据权利要求5所述的一种竹木纤维复合板材的制备方法，其中，所述S6步骤中，胶合的区域至少包括条形平面(16)、卡接槽(14)的内壁、第一卡接块(13)的底面和第二卡接块(15)的顶面。
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