阅读说明：本技术 一种带有封边的蜂窝板及其制备方法 (Honeycomb plate with edge sealing and manufacturing method thereof ) 是由 朱华平 翟祖龙 于 2021-09-27 设计创作，主要内容包括：本发明属于连续纤维高强度复合蜂窝板技术领域,产品蜂窝板上下表皮为连续纤维增强热塑复合材料制层,上表皮表面设有淋膜面和保护膜,中间结构为聚丙烯蜂窝芯,蜂窝芯的两边设有聚丙烯封边条,所述封边条为锁扣式,可以解决成品复合时会导致两条封边料之间有一定的缝隙；本发明还提供的一种制备方法：采用连续纤维增强热塑材料制备的上下表面,通过热复合工艺将上下表面与蜂窝芯复合制得蜂窝板材；在蜂窝芯的两边循环铺设封边材料,使得每一块蜂窝芯的边缘都贴合封边材料；设置复合机的工作参数,设备加热并保温固定时间,铺设封边材料的蜂窝板材通过传送带送入复合机中进行热塑复合,得到带有封边的蜂窝板。(The invention belongs to the technical field of continuous fiber high-strength composite honeycomb plates, wherein the upper and lower surface skins of a product honeycomb plate are made of continuous fiber reinforced thermoplastic composite materials, the surface of the upper surface skin is provided with a film spraying surface and a protective film, the middle structure is a polypropylene honeycomb core, two sides of the honeycomb core are provided with polypropylene edge sealing strips, and the edge sealing strips are in a lock catch type, so that a certain gap can be formed between two edge sealing materials when a finished product is compounded; the invention also provides a preparation method which comprises the following steps: the upper surface and the lower surface prepared from continuous fiber reinforced thermoplastic materials are compounded with the honeycomb core through a thermal compounding process to prepare a honeycomb plate; circularly paving edge sealing materials on two sides of the honeycomb core, so that the edge of each honeycomb core is attached to the edge sealing materials; setting the working parameters of the compound machine, heating the equipment and keeping the temperature for a fixed time, and conveying the honeycomb plate paved with the edge sealing material into the compound machine through a conveying belt for thermoplastic compounding to obtain the honeycomb plate with the edge sealing.)

1. A method for preparing a honeycomb plate with edge sealing is characterized by comprising the following steps:

s1, compounding the upper surface and the lower surface with the honeycomb core by adopting the upper surface and the lower surface prepared from the continuous fiber reinforced thermoplastic material through a thermal compounding process to prepare a honeycomb plate;

s2, circularly paving edge sealing materials on two edges of the honeycomb cores to enable the edge of each honeycomb core to be tightly attached to the edge sealing materials, wherein the honeycomb cores and the edge sealing materials are arranged in a staggered manner;

and S3, setting working parameters of the compound machine according to requirements, heating the equipment and keeping the temperature for a fixed time, and conveying the honeycomb plate paved with the edge sealing material into the compound machine through a conveying belt for thermoplastic compounding to obtain the honeycomb plate with the edge sealing.

2. The method for manufacturing a honeycomb panel with edge seals according to claim 1, wherein the thermoplastic compounding step of laying the honeycomb plate material of the edge seals in the step S3 is as follows:

s31, heating the honeycomb plate paved with the edge sealing material by a first pair of rollers of a compound machine, and heating and melting the edge sealing material and the upper and lower surfaces;

and S32, carrying out second counter roll pressing, cooling and shaping on the honeycomb plate subjected to the step S31 by a compound machine to obtain the honeycomb plate with the edge sealing.

3. The method of claim 1, wherein the incubation time is half an hour and the conveyor belt is a teflon conveyor belt.

4. A honeycomb panel with edge seals, which is manufactured by the method according to any one of claims 1 to 3, characterized in that the honeycomb core (2) and the lock type edge seal strips (3) are arranged in a staggered manner in the honeycomb panel with the edge seals, the honeycomb core (2) is provided with an upper surface (5) and a lower surface (1), the upper surface (5) and the lower surface (1) are made of continuous fiber reinforced thermoplastic composite materials, and a low-temperature adhesive film (4) is further arranged between the upper surface (5) and the honeycomb core (2).

5. A cellular board with edge banding according to claim 4, characterized in that the cellular core (2) is flanked by edge banding strips (3), the height of the cellular core (2) corresponding to the height of the edge banding strips (3).

6. A cellular board with edge sealing according to claim 4, characterized in that the cells of the cellular core (2) are hexagonal or circular, the cellular core (2) is made of polypropylene, and the edge sealing strips (3) are made of thermoplastic foaming material.

7. A cellular board with edge sealing according to claim 4, characterized in that the edge sealing (3) comprises an inner concave edge sealing and an outer convex edge sealing, the joint of the outer convex edge sealing being insertable into the groove of the inner concave edge sealing.

8. A cellular board with edge sealing according to claim 4, characterized in that the upper surface (5) is provided with a PP film coating layer and a PET protective film with corona treatment, and the thickness of the upper surface (5) is larger than that of the lower surface (1).

9. The cellular board with the edge seal according to claim 4, wherein the low-temperature adhesive film (4) is a CPP adhesive film.

10. The cellular board with edge sealing according to claim 4, characterized in that the density of the cellular core (2) is 100-110kg/m³。

Technical Field

The invention belongs to the technical field of continuous fiber high-strength composite honeycomb plates, and particularly relates to a honeycomb plate with edge sealing and a preparation method thereof.

Background

The continuous fiber reinforced thermoplastic honeycomb plate is formed by thermoplastic compounding of a continuous fiber prepreg tape multi-directional laying layer and a polypropylene honeycomb core, has the advantages of light weight, compression resistance, high strength, impact resistance and the like, and is widely applied to a plurality of technical fields, such as motor homes, battery guard plates, compartment plates, passenger car floors, containers and the like, but the invention is mainly applied to the building field, along with the development of the building industry, light-weight and high-strength building templates are more and more valued, while the traditional building templates are mostly wood plates, the weight is heavy, the strength is not high, the recycling rate is low, the manual transportation is inconvenient, the manufacturing process of the wood plates is complicated, the labor is wasted, a large amount of wood is wasted, the environment is also polluted greatly, and the slag and the smell generated during the wood processing bring much trouble to the surrounding living people, the existing building construction mostly adopts combined steel templates, is a novel template replacing wood with steel, and is unacceptable in construction side due to heavier weight, inconvenient transportation, more abutted seams, higher price and the like. At present, the traditional edge sealing method has the defects that a PP edge sealing strip is bonded with a honeycomb core through glue, and the main defects are that the bonding strength is insufficient and the efficiency is low. In order to solve various problems of the existing building templates, the patent discloses a honeycomb plate with edge sealing to replace an original wood plate, and the invention also provides a method for preparing the honeycomb plate.

Disclosure of Invention

The invention aims to solve the problems of low strength, heavier weight, low repeated utilization rate, inconvenient transportation and the like of the existing building template, and provides a method for manufacturing a honeycomb plate with edge sealing.

It is to be noted that the materials of the specification and claims are in english abbreviation forms, such as PP means polypropylene material, PET means polyester resin, CPP means cast polypropylene film.

In order to achieve the above object, the technical solution of the present invention is as follows,

the first step is that the upper surface and the lower surface which are prepared by continuous fiber reinforced thermoplastic materials are compounded with the honeycomb core by a thermal compounding process to prepare the honeycomb plate.

Circularly paving edge sealing materials on two edges of the honeycomb cores to ensure that the edge of each honeycomb core is attached with the edge sealing materials, and the honeycomb cores and the edge sealing materials are arranged in a staggered manner;

and thirdly, setting working parameters of the compound machine according to requirements, heating the equipment, keeping the temperature for a fixed time, and conveying the honeycomb plate paved with the edge sealing material into the compound machine through a conveying belt for thermoplastic compounding to obtain the honeycomb plate with the edge sealing.

Further, the thermoplastic compounding step of the honeycomb plate material with the edge sealing material laid in the third step comprises the following steps:

and heating the honeycomb plate paved with the edge sealing material by a first pair of rollers of the compound machine, and heating and melting the edge sealing material and the upper and lower surfaces.

And (3) pressing, cooling and shaping the honeycomb plate subjected to the previous step by a second counter roll of the compound machine, and pressing and shaping the upper surface, the lower surface and the edge sealing strip with the honeycomb core into a whole to obtain the honeycomb plate with the edge sealing.

Furthermore, the compound machine for preparing the honeycomb plate comprises two groups of 'product' -shaped press rollers, each group comprises 3 rollers, the upper and lower groups of press rollers correspond to each other in position, the two corresponding rollers form a first pair of rollers and a second pair of rollers, the first pair of rollers have the functions of pressing and heating so as to heat and melt the edge sealing material, the second pair of rollers mainly have the function of pressing and cooling, the honeycomb plate with the edge sealing material is heated, pressed and cooled by the first pair of rollers and the second pair of rollers, and then is shaped to obtain the target honeycomb plate, and meanwhile, a feed inlet of the compound machine is provided with a limiting device which can control the width of a finished product.

Further, the edge banding material and honeycomb core may be processed in multiple rows and rows, which significantly increases the efficiency of the production.

Further, honeycomb core and banding strip staggered arrangement in the honeycomb panel that has the banding, the honeycomb core sets up upper surface and lower surface, upper surface and lower surface are continuous fiber reinforcement thermoplastic composite, still are provided with the low temperature glued membrane between upper surface and the honeycomb core.

Further, the honeycomb core both sides are the banding strip, and are the same, and the banding strip both sides set up the honeycomb core, and two kinds of structures are crisscross each other, the height of honeycomb core and the highly uniform of banding strip, both laminates and get into the compounding machine and process, and the size can be adjusted according to actual conditions at will, and the flexibility is higher, can satisfy not unidimensional demand.

Preferably, the tube unit of the honeycomb core is hexagonal or circular, the honeycomb core is made of polypropylene, the edge sealing strips are made of thermoplastic foaming materials and have the characteristic of high-density bottom foaming rate, and the honeycomb plate made of the material has the characteristics of light weight, high strength, impact resistance and the like.

Furthermore, the banding limit is detachable hasp structure, including interior concave banding strip and evagination banding strip, and the joint of evagination banding strip can inlay the recess of interior concave banding strip, can have the gap in order to avoid the concatenation department of honeycomb panel edge banding strip, can also reach the condition of continuous blowing.

Preferably, the upper surface is provided with the PP drenches rete and the PET protection film of corona treatment, makes the upper surface have antifriction, surface smoothness, dyne index height, easy washing, characteristics such as can reuse many times, because the lower surface does not regard as the functional surface, just does not have PP to drench rete and PET protection film, and thickness is thin relatively upper surface thickness, and it is better than upper portion to peel off also.

Preferably, the low temperature glued membrane is the CPP glued membrane, can improve the peel strength between upper surface and the honeycomb core, makes things convenient for the feeding of honeycomb core limit portion.

Preferably, the density of the honeycomb core is 100-110kg/m³。

The invention has the following beneficial effects:

the edge sealing method is simple and efficient, can meet the requirements of different sizes by compounding the continuous fiber reinforced thermoplastic composite plate, the polypropylene honeycomb core and the edge sealing strip through one-time hot plastic, has high flexibility, and also realizes the functions of high strength, friction resistance, light weight, repeated utilization and convenient disassembly.

Drawings

For a more clear description of the invention, reference will now be made to embodiments, technical methods and product structures in the form of the accompanying drawings:

fig. 1 is a diagram of a product structure with a sealing edge according to an embodiment of the present invention.

FIG. 2 is a schematic view of the feeding scheme of example 1 of the present invention.

FIG. 3 is a schematic view of another feeding method in example 2 of the present invention.

Numbering in the figures: 1-lower surface, 2-honeycomb core, 3-edge sealing strip, 4-low temperature adhesive film, 5-upper surface, 6-Teflon conveyor belt, 7-first pair of rollers and 8-second pair of rollers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The first embodiment is as follows:

as shown in figure 1, the width of the lower surface 1 is the width of two finished products, the material is a unidirectional tape made of continuous fibers through preimpregnation, then the thermoplastic composite material is designed through multidirectional layering, because the lower surface 1 is not used as a functional surface, a laminating layer and a PET protective film are not arranged, the thickness is thinner than that of the upper surface 5, the stripping is better than that of the upper part, a honeycomb core 2 is arranged on the lower surface 1, two honeycomb cores 2 can be placed in the machine simultaneously, the width can be customized according to requirements, the material is polypropylene, the tube shape is a hexagonal honeycomb or a honeycomb with a circle center, in order to improve the compression resistance and the impact resistance, the density of the larger honeycomb core can be selected, and the embodiment adopts 100-flour 110Kg/m³A honeycomb core of the density of (a); 3 edge sealing strips 3 are arranged in the middle and at two sides of the honeycomb core 2, are made of polypropylene foaming materials and have a lock catch type structure, so that the effect of continuous discharging can be achieved, gaps can be avoided at the edges of the honeycomb plate, the adjacent edge sealing strips 3 are tightly connected with the honeycomb core 2, the honeycomb plate is fed in and discharged, longitudinal cutting can be carried out on the edge sealing strips 3 in the middle, two finished honeycomb plates can be discharged, and the honeycomb plate discharging device is simple and high in efficiency; the sealing strip 3 at the inlet of the machine needs to be tightly close to the limiting device to ensure the width of the product, so that the problem of deviation of the sealing strip 3 can be prevented, the limiting device can ensure that the sealing edge straightness of each finished honeycomb plate is straight, the sealing edge width meets the design requirement, and the problem of manual alignment is solved; a layer of low-temperature glue film 4 is added on the edge banding 3 and the honeycomb core 2, and the low-temperature CPP glue film adopted by the embodiment can enable the upper surface 5 and the honeycomb core 2 to be in contact with the upper surfaceThe peeling between the nest cores 2 is greatly improved, the upper surface 5 is laid on the CPP adhesive film, the width of the upper surface is equivalent to the width of two finished products, a unidirectional tape which is prepared by pre-impregnating continuous fibers is adopted, then the upper surface 5 is formed by designing and thermoplastic compounding through multi-directional layering, and the upper surface 5 is provided with a PP (polypropylene) laminating layer and a PET (polyethylene terephthalate) protective film which is subjected to corona treatment, so that the appearance surface of the finished product has the advantages of friction resistance, smooth surface and high dyne index; after all the materials are prepared, the materials can simultaneously enter a thermoplastic compound machine, and can be subjected to online cutting according to the width requirement after being discharged, so that the time and the labor are saved, the efficiency is high, and the cost can be greatly saved.

The specific steps of this example are as follows:

s1: the upper surface and the lower surface are prepared by adopting continuous fiber reinforced thermoplastic materials, the upper surface 5 comprises 4 layers of continuous fiber reinforced thermoplastic materials, the surfaces of the continuous fiber reinforced thermoplastic materials are provided with a layer of pp (polypropylene) film surface and a PET (polyethylene terephthalate) protective film subjected to corona treatment, the lower surface 1 comprises two layers of continuous fiber reinforced thermoplastic materials, a layer of low-temperature glue film 4 is arranged between the upper surface 5 and the honeycomb core 2, the upper surface and the lower surface are compounded with the honeycomb core 2 through a thermal compounding process to prepare the honeycomb plate, wherein the density of the selected honeycomb core 2 is 105kg/m³。

S2, arranging a layer of low-temperature adhesive film 4 between the upper surface 5 and the honeycomb core 2, wherein the upper part can be stripped due to the fact that the upper surface 5 is thick, the middle edge sealing materials are placed on two sides of the honeycomb core 2 and tightly attached to the honeycomb core 2, the edge sealing materials are sequentially and circularly paved according to the sandwich structure, the edge sealing materials are arranged on the left side and the right side of the product, and the width of the product is controlled by adjusting a limiting device;

s3, setting technological parameters of the compound machine shown in the figure 2 in advance, preheating and preserving heat for half an hour by the compound machine, conveying the compound machine by a conveyor belt according to a laid structure in advance, heating and melting the compound machine by a first pair of rollers 7, pressing the compound machine by a second pair of rollers 8 to cool and form the cellular board, and obtaining the cellular board with the edge sealing.

Example two:

the structure of figure 3 is the same as that of example 1, except that the feeding mode is different.

The specific steps of the embodiment are as follows:

s1: the upper surface and the lower surface are prepared by adopting continuous fiber reinforced thermoplastic materials, the upper surface 5 comprises 4 layers of continuous fiber reinforced thermoplastic materials, the surfaces of the continuous fiber reinforced thermoplastic materials are provided with a layer of pp (polypropylene) film surface and a PET (polyethylene terephthalate) protective film which is subjected to corona treatment, the lower surface 1 comprises two layers of continuous fiber reinforced thermoplastic materials, a layer of low-temperature glue film 4 is arranged between the upper surface and a honeycomb core, the upper surface and the lower surface are compounded with the honeycomb core 2 by a thermal compounding process to prepare a honeycomb plate, wherein the density of the selected honeycomb core 2 is 108kg/m³。

S2, arranging a layer of low-temperature adhesive film 4 between the upper surface 5 and the honeycomb core 2, wherein the upper part can be stripped due to the fact that the upper surface 5 is thick, edge sealing materials are paved on two sides of the honeycomb core 2 and are tightly attached to the honeycomb core 2, the edge sealing materials are sequentially and circularly paved according to the sandwich structure, and the honeycomb core 2 and the edge sealing materials are staggered with each other, so that the honeycomb core 2 is arranged on two sides of the middle layer; the width of the honeycomb plate which is not completely processed is adjusted through the limiting device, the honeycomb plate is transversely fed, the length of the product in the first embodiment is taken as the width of the product in the second embodiment, and therefore multiple rows of honeycomb plates can be sequentially fed, and the production efficiency is greatly improved;

s3, setting technological parameters of the compound machine shown in the figure 3 in advance, preheating and preserving heat of the compound machine for one hour, conveying the compound machine by a Teflon conveyor belt 6 according to a laid structure in advance, heating and melting the compound machine by a first pair of rollers 7, and pressing the compound machine by a second pair of rollers 8 to cool and mold the honeycomb plate to obtain the honeycomb plate with the sealed edges.

Table 1: and (4) comparing the physical property experiment data of the honeycomb plate.