WO2019085767A1

WO2019085767A1 - Fireproof and thermally insulating honeycomb material and preparation method thereof

Info

Publication number: WO2019085767A1
Application number: PCT/CN2018/110914
Authority: WO
Inventors: 谢建华; 谢烨; 戚蓉蓉
Original assignee: 谢建华; 谢烨; 戚蓉蓉
Priority date: 2017-11-01
Filing date: 2018-10-19
Publication date: 2019-05-09
Also published as: CN107756910A

Abstract

A fireproof and thermally insulating honeycomb material and a preparation method thereof. The preparation method comprises pressing a finished product of a fireproof and thermally insulating material (4) into cells of a honeycomb core (1), forming, with a single stage, an integrated bi-functional material. The honeycomb material product prepared by the method maintains original functions of a honeycomb material and achieves additional functions of thermal insulation, sound insulation, heat retention and other effects, has a stable overall structure, uniform foams in the honeycomb cells, a high percentage of closed cells, a low coefficient of heat conductivity and is easy and convenient to operate, thus fully meeting the application requirements for high-end applications such as for airplanes, high-speed trains, automobiles and boats.

Description

Honeycomb fireproof thermal insulation material and preparation method thereof

Technical field

The present invention relates to a honeycomb composite material technology, and more particularly to a honeycomb fireproof heat insulating material and a method of preparing the same.

Background technique

With the continuous development of modern science, human progress has put forward higher requirements for material life and technological innovation.

Honeycomb composite material is a new type of material, characterized by light weight, high strength, high rigidity, cushioning, anti-vibration, heat insulation, heat preservation and sound insulation. It is widely used in aviation, aerospace, rail transit, vehicle and ship manufacturing. Construction, furniture and other fields. It can be directly applied to airplanes, high-speed trains, double-decker trains, subway light rails, vehicle and ship wall panels, luggage rack partitions, etc., as well as interior decorative floors. The new material has high economic value, can replace metal materials and forest resources in large quantities, and protect and improve the ecological environment. It is a new environmentally friendly material that meets the development theme of the 21st century.

As shown in FIG. 1, the above honeycomb composite material is mainly composed of a honeycomb core 1 and a skin 2 and a sheet 3 bonded to the upper and lower surfaces of the honeycomb core 1 by an adhesive. The honeycomb core 1 is currently the most common aluminum honeycomb core and Aramid paper honeycomb core. However, whether it is a honeycomb composite material using an aluminum honeycomb core or an aramid paper honeycomb core, its flame retardancy is poor, the fire rating is low, which causes obvious defects, and its heat insulation, heat preservation, sound insulation and the like are also Need to be further improved.

Summary of the invention

The object of the present invention is to provide a honeycomb fireproof thermal insulation material and a preparation method thereof, which can effectively improve the fireproof, heat preservation and the like properties of the honeycomb material, and the preparation method is simple and effective.

In order to achieve the above object, the present invention adopts the following technical solutions.

On the one hand, a method for preparing a honeycomb fireproof heat insulating material is pressed into a honeycomb core by using a fireproof and heat insulating material.

The pressing method includes a pressing or rolling method.

The rolling is carried out by using a rolling roller arranged up and down to crush the finished product of the fire insulating material stacked on the honeycomb core into the honeycomb core.

The fireproof and heat insulating material finished product comprises a polymer foamed or non-foamed material and a composition material thereof, and a finished product of inorganic fireproof heat insulating material.

The finished fireproof insulation material is replaced by a rubber in a vulcanization process or a semi-finished product of a plastic material in a curing process and a composition thereof.

The finished polymer foam material is a finished phenolic foam material.

The finished or semi-finished product is a sheet.

The honeycomb core is a paper or metal material.

The paper material is aramid, kraft paper, plastic paper, carbon fiber paper or modified paper material.

The metal material is aluminum or copper or an alloy.

If the strength of the material of the honeycomb core cannot meet the pressing of the fireproof and thermal insulation material, the guiding mold of the same high-strength metal material as the honeycomb core is used, and the honeycomb core, the guiding mold, and the fireproof and thermal insulation material are pressed. The bottom to top overlaps in turn, and the finished product of the fireproof and thermal insulation material is passed through the guide mold and pressed into the honeycomb core by pressing down.

On the other hand, the honeycomb fireproof heat insulating material prepared by the above preparation method comprises a honeycomb core and a finished fireproof heat insulating material pressed into the honeycomb core.

Also included is a skin bonded to the upper and lower surfaces of the honeycomb core after being pressed into the finished fireproofing material.

It also includes decorative surfaces that are bonded to the upper and lower skins.

The decorative surface comprises one or more layers of fireproof board, metal paint, aluminum board, calcium silicate board, real stone paint panel, stone, ceramic tile.

The honeycomb fireproof thermal insulation material of the invention and the preparation method thereof have the following advantages:

1. The invention adopts a fireproof and heat insulating material product which is pressed into a hole nest of a honeycomb core, and a functional material which is formed into one body at a time, and the honeycomb material product manufactured by the method has the function of the original honeycomb material and is separated. The functions of heat, sound insulation and heat preservation have the overall structural stability, uniform bubble in the bee hole, high closed cell ratio, small thermal conductivity and easy operation.

2, the traditional single honeycomb material, only the continuous phase has no dispersed phase, and it is easy to spread when it is fired. However, after the method of the present invention is prepared, the fireproof and heat-insulating finished board is pressed into the pore nest of the honeycomb core to form a dispersed phase, which replaces The air in the bee hole that is easily ignited by fire can block the condition that the continuous phase of the honeycomb wall is in contact with fire, and improve the overall fire performance of the product.

3, because the hole nest is filled with low thermal conductivity fire insulation material, reducing heat radiation, heat conduction and air convection, improve the thermal insulation effect, increase the function of the original honeycomb material, eliminating the need for aircraft, high-speed rail, vehicles and ships, etc. The box body needs to use both honeycomb materials and insulation measures. The two are indispensable labor, which not only saves production costs, simplifies the process, improves the construction efficiency, but also increases the space for the cabinet.

DRAWINGS

1 is a schematic structural view of a prior art honeycomb composite material;

2 is a schematic structural view of a honeycomb fireproof heat insulating material of the present invention;

Figure 3 is a schematic view showing the structure of a rolling arrangement of the present invention;

Figure 4 is a schematic structural view of another rolling device of the present invention;

Figure 5 is a schematic structural view of a honeycomb guided mold of the present invention;

Figure 6 is a schematic view of a stamped stack using a honeycomb guided mold of the present invention.

Detailed ways

The technical solution of the present invention will be further described below with reference to the accompanying drawings.

The preparation method of the honeycomb fireproof heat insulating material of the invention is pressed into the hole nest of the honeycomb core 1 by using the fireproof heat insulating material.

The pressing method can be performed by pressing or rolling, or by other pressing methods.

Wherein, the pressing method can adopt hydraulic equipment, and the finished product 4 of the fireproof and thermal insulation material stacked on the honeycomb core 1 is directly pressed into the honeycomb core 1. In the manner of rolling, the fireproof and heat insulating material finished product 4 which is moved thereto and stacked on the honeycomb core 1 can be crushed into the honeycomb core 1 by using a rolling roller arranged up and down. 3 and 4 show two rolling devices for roller compaction preparation, through which the fireproof and thermal insulation material product 4 and the honeycomb core 1 which are stacked one on top of the other can be conveyed, after being crushed by the roller 5 After pressing, a honeycomb fireproof heat insulating material 6 is formed which is combined.

The fireproof and heat insulating material finished product 4 may include a polymer foamed or non-foamed material and a composition material thereof, and an inorganic fireproof heat insulating material and the like.

The fireproof and heat insulating material finished product 4 can also be replaced by a rubber in a vulcanization process or a semi-finished product of a plastic material in a curing process and a composition thereof.

The finished product of the polymer foaming material is preferably a finished product of phenolic foaming material. Since the finished phenolic foaming material has certain crispness, it is very suitable for direct pressing and preparation, and has good heat preservation and fireproofing. Performance.

The finished product or semi-finished product may preferably be in the form of a sheet, and of course other profiles may be used.

The honeycomb core 1 may be made of a paper or metal material or other materials, and the paper material may specifically be a paper material such as aramid paper, kraft paper, plastic paper, carbon fiber paper or modified paper material. The metal material may be aluminum or copper or its alloy or other metal or alloy material.

In addition, if the material strength of the honeycomb core 1 cannot satisfy the press-in of the fireproof and heat insulating material product 4, the same high-strength metal material guide mold 7 as shown in FIG. 5 can be used, and the honeycomb core can be used. 1. Guide mold 7, finished product of fireproof and thermal insulation material 4, which are overlapped from bottom to top (see Figure 6). The finished product of fireproof and thermal insulation material is passed through the guide mold and pressed into the honeycomb core by pressing down. This method is particularly suitable for the downforce production of paper honeycomb cores having a large diameter of the nest.

The honeycomb fireproof heat insulating material prepared by the above preparation method comprises a honeycomb core 1 and a finished fireproof heat insulating material material 4 pressed into the honeycomb core 1. The honeycomb fireproof insulation material can be directly sold as a finished product, or can be used as a substrate to continue the corresponding compounding:

As an embodiment, the honeycomb fireproof heat insulating material further includes a skin adhered to the upper and lower surfaces of the honeycomb core 1 after being pressed into the fireproof and heat insulating material finished product 4.

In another embodiment, the cellular fireproof thermal insulation material further comprises a decorative surface bonded to the upper and lower skins, and the decorative surface may include a fireproof board, a metallic paint, an aluminum plate, a calcium silicate board, a real stone paint panel, a stone, One or more layers in a tile composite.

It should be noted that the applicant of the present invention has considered the following schemes in the development process:

1. Filling the pores of the aramid paper honeycomb core 1 or other honeycomb core 1 with a foamed phenolic resin (liquid material), which is prepared by heating and foaming, but the problem with this method is : Generally, aramid honeycomb materials or other honeycomb materials are in several cubic units. That is to say, in the case of aramid honeycomb materials, the diameter of the beehole is about five or six millimeters, and the depth of the hole is about one meter. When such a small depth of the bee hole is immersed in the foamed phenolic resin, the viscosity and the solid content of the foamed resin are required to be high, and it is difficult to control the hanging degree of the resin in a deep hole of about one meter, and the uniformity of the upper and lower sides of the resin cannot be ensured. In addition, the foaming phenolic resin in the deep hole of about one meter, through heating, foaming, solidification, will be subject to the great foaming resistance of the bee wall, so that the bubble body is blocked and the uneven opening rate is high. It does not reach a certain effective closed cell ratio and directly affects the heat preservation effect.

2. First cut the large aramid honeycomb material into pieces, then dip the phenolic foaming resin, and then heat foaming and solidifying. This effect is even worse. This is because the two ends of the honeycomb cannot control the overflow of the foaming of the phenolic foaming resin, which is higher than the honeycomb plane, and the hardened resin such as iron is hard to be processed and smoothed.

3. Filling a honeycomb hole with an organic or inorganic powder smaller than bee holes, or an organic foamable polyimide, aerogel, polyurethane, expandable polystyrene (EPS), etc. The precursor powder or microbeads can be heated and pressurized to achieve the desired effect. However, this method is too time-consuming and energy-consuming, and can only be realized in a laboratory, and cannot be scaled and continuously produced, especially a material product having a certain length and width. Generally, the finished honeycomb material board is nearly two meters long, and the difficulty of processing equipment and processing can be imagined.

In summary, the honeycomb fireproof thermal insulation material of the present invention and the preparation method thereof have the following advantages:

1. It does not change the production process of the honeycomb panel, and does not need to immerse the honeycomb panel in the foaming phenolic resin and perform the heating and foaming curing in the honeycomb again. And a heating device, this kind of heating equipment is small, it is difficult to achieve if it is large.

2, it is not necessary to fill the honeycomb hole with powder, micro-beads and other materials, and then enter the heating and pressure forming and other troublesome processes to save energy;

3, the finished phenolic foam board, or other organic foam finished board, completely prefabricated by the factory to produce the finished board, the product quality is stable, the bubble body is uniform, the closed cell ratio is high, the thermal conductivity is low, and the thermal insulation effect is good. It is the innate advantage of the finished board.

4, phenolic foam finished board, in the aramid honeycomb finished board or other honeycomb finished board, processed by double roller rolling equipment, one-time forming two-in-one innovative process technology to produce multi-functional honeycomb sheet, no need Troublesome processes such as reprocessing, pressurization, warming, solidification, and re-cutting.

5. The honeycomb sheet manufactured by the invention can process various plates which can be long, short, large and small, with low energy consumption level, simple process, greatly reduced work intensity, reduced labor and work. surroundings.

It should be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention, Variations and modifications are intended to fall within the scope of the appended claims.

Claims

The invention relates to a method for preparing a honeycomb fireproof thermal insulation material, which is characterized in that a finished product of fireproof thermal insulation material is pressed into a honeycomb core.
The method according to claim 1, wherein the pressing method comprises pressing or rolling.
The method for preparing a honeycomb fireproof heat insulating material according to claim 1, wherein the rolling is performed by using a rolling roller arranged one above another, and the fireproof and heat insulating material stacked on the honeycomb core is rolled up. Into the honeycomb core.
The method for preparing a honeycomb fireproof heat insulating material according to claim 1, wherein the fireproof and heat insulating material comprises a polymer foamed or non-foamed material and a composition thereof, and an inorganic fireproof heat insulating material. Finished product.
The method for preparing a honeycomb fireproof thermal insulation material according to claim 1, wherein the fireproof and heat insulating material product is replaced by a rubber in a vulcanization process or a semi-finished product of a plastic material in a curing process and a composition thereof.
The method for preparing a honeycomb fireproof thermal insulation material according to claim 4, wherein the finished polymer foam material is a finished phenolic foam material.
The method for preparing a honeycomb fireproof thermal insulation material according to claim 5, wherein the finished product or semi-finished product is a plate material.
The method for preparing a honeycomb fireproof heat insulating material according to claim 1, wherein the honeycomb core is a paper or a metal material.
A method of producing a honeycomb fireproof heat insulating material according to claim 8, wherein the paper material is aramid, kraft paper, plastic paper, carbon fiber paper or a modified paper material.
The method for preparing a honeycomb fireproof heat insulating material according to claim 1, wherein if the strength of the material of the honeycomb core cannot meet the pressing of the fireproof heat insulating material, the same high strength metal as the honeycomb core is used. The guiding mold of the material overlaps the honeycomb core, the guiding mold and the fireproof and heat insulating material in order from bottom to top, and the finished product of the fireproof and heat insulating material is passed through the guiding mold and pressed into the honeycomb core by pressing down.
The honeycomb fireproof heat insulating material prepared by the preparation method according to any one of claims 1 to 10, which comprises a honeycomb core and a finished fireproof heat insulating material pressed into the honeycomb core.
The honeycomb fireproof heat insulating material according to claim 11, further comprising a skin adhered to the upper and lower surfaces of the honeycomb core after being pressed into the finished fireproof heat insulating material.
The honeycomb fireproof heat insulating material according to claim 12, further comprising a decorative surface bonded to the upper and lower skins.
The honeycomb fireproof thermal insulation material according to claim 13, wherein the decorative surface comprises one or more layers of a fireproof board, a metal paint, an aluminum plate, a calcium silicate board, a real stone paint panel, a stone, and a ceramic tile. .