CN116001310A - Manufacturing process of ultrahigh-strength compressible composite structure - Google Patents

Abstract

The invention discloses a manufacturing process of an ultrahigh-strength compressible composite structure, which comprises the following steps of: forming a three-dimensional tensile space structure by weaving or casting a high-elasticity or high-flexibility grid material through a mould; compressing the three-dimensional tensile space structure to form a high-density storage state; step three: coating the surface with a film material; changing the compressed state to a gap compressed state having fine porosity; injecting liquid to be expanded, mixing with capillary, wetting, and integrally expanding. The invention has the beneficial effects that: the high-strength composite structure is formed by simultaneously injecting the high-compressibility grid structure similar to a sponge and superfine wood-like foam into the sponge after mixing, externally adding a film material to control the growth direction, and synchronously compressing and expanding the fiber structure and expanding the foaming material, so that the high-strength composite structure can be applied to automobile bumpers and portable temporary support components, can be used for rapidly expanding buildings, and has the characteristics of instant practicability.

Description

A manufacturing process of ultra-high strength compressible composite structure

technical field

The invention relates to the technical field of high-strength compressible composite structures, in particular to a manufacturing process of ultra-high-strength compressible composite structures.

Background technique

In the prior art, there are many accidents in automobiles, and the parts where automobiles often collide are bumpers and automobile bodies. Most of the main materials used at present are polypropylene. The disadvantage is that the mechanical properties are poor, and its anti-collision performance cannot reach to ideal requirements.

Contents of the invention

The purpose of the present invention is to provide a manufacturing process of an ultra-high-strength compressible composite structure to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solution: a manufacturing process of an ultra-high-strength compressible composite structure, comprising the following steps:

Step 1: Weaving or mold-casting highly elastic or highly flexible mesh materials to form a three-dimensional tensile space structure;

Step 2: Compress the three-dimensional tensile space structure to form a high-density storage state;

Step 3: Coating the surface with film material;

Step 4: Change the compressed state into a compressed state with fine and dense pores;

Step 5: Inject the liquid to be expanded and mix and wet with the capillary, and finally expand into one piece.

Further optimized, in the first step, the highly elastic or highly flexible material is a honeycomb sponge material.

Further optimized, in the second step, the binding force is released by triaxially compressing the sponge body in a high-density storage state to increase its volume by 1.1 times. At this time, the pore size of the honeycomb network is 1 mm;

Further optimized, in the third step, the film material is a resin elastic film containing fiber felt inside.

Further optimization, in the step five, the liquid to be expanded is polyurethane foaming agent, which is quickly mixed with AB type and isocyanate and curing agent, and penetrates into the grid after 5-6 seconds, and the honeycomb is made by releasing the external binding force. The shape grid slowly expands, and cooperates with the blowing agent volume to reach the same liquid level, so that the boundary between the two remains consistent

Further optimized, in the first step, the mesh material can be one of ultra-fine high molecular weight polyethylene, Kevlar fiber, and nickel-titanium alloy with superelasticity, and it is formed by weaving or casting.

Beneficial effect

The manufacturing process of the ultra-high-strength compressible composite structure provided by the present invention uses a highly compressible grid structure similar to a sponge, and injects it into the sponge after being mixed with ultra-fine imitation wood material foam at the same time, and the external film material is added to control the growth direction. This structure can simultaneously carry out the compression and stretching of the fiber structure and the expansion of the foaming material, and finally forms a composite structure with high strength. It can be applied to automobile bumpers, portable temporary support parts, and can also quickly expand buildings. It has the characteristics of immediate practicality .

Detailed ways

The following are specific examples of the present invention to further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

Example

A manufacturing process of an ultra-high-strength compressible composite structure, comprising the following steps:

Step 1: Weaving or mold-casting highly elastic or highly flexible mesh materials to form a three-dimensional tensile space structure;

Step 2: Compress the three-dimensional tensile space structure to form a high-density storage state;

Step 3: Coating the surface with film material;

Step 4: Change the compressed state into a compressed state with fine and dense pores;

Step 5: Inject the liquid to be expanded and mix and wet with the capillary, and finally expand into one piece.

In this embodiment, in step 1, the highly elastic or highly flexible material is a honeycomb sponge material, and in step 2, the binding force is released by triaxially compressing the sponge body in a high-density storage state to increase its volume by 1.1 times , at this time the aperture of the honeycomb network is 1mm;

In step 3, the membrane material is a resin elastic membrane containing fiber felt inside.

In step 5, the liquid to be expanded is polyurethane foaming agent, which is quickly mixed with AB type, isocyanate and curing agent, and penetrates into the grid after 5-6 seconds, and the honeycomb grid is slowly expanded by releasing the external constraint force, And cooperate with the volume of blowing agent to reach the same liquid level, so that the boundary between the two remains consistent

In the first step, the grid material can be one of ultra-fine high molecular weight polyethylene, Kevlar fiber, and nickel-titanium alloy with superelasticity, and is formed by weaving or casting.

Implementation method: select a high-elastic or high-flexibility material to form a three-dimensional tensile space structure of the material through weaving or mold casting, and form a high-density storage state through triaxial compression of the material, and through certain surface modification, the surface Cover the foaming material, where the foaming material is a polyurethane material with high adhesion, and then change the compressed state into a compressed state with fine and porous gaps, so as to mix and wet with the injected liquid to be expanded capillary, and finally expand into one body. The fiber network can be made of ultra-fine high-molecular-weight polyethylene or Kevlar fiber or nickel-titanium alloy with superelasticity, and the grid structure is formed by weaving or casting.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the content of the invention within the protection scope of the present invention.

Claims (6)

1. The manufacturing process of the ultra-high strength compressible composite structure is characterized by comprising the following steps of:

step one: forming a three-dimensional tensile space structure by weaving or casting a high-elasticity or high-flexibility grid material through a mould;

step two: compressing the three-dimensional tensile space structure to form a high-density storage state;

step three: coating the surface with a film material;

step four: changing the compressed state to a gap compressed state having fine porosity;

step five: injecting liquid to be expanded, mixing with capillary, wetting, and integrally expanding.

2. The process for making an ultra-high strength compressible composite structure according to claim 1, wherein: in the first step, the high-elasticity or high-flexibility material is a honeycomb sponge material.

3. The process for making an ultra-high strength compressible composite structure according to claim 1, wherein: in the second step, the cavernous body in a high-density storage state is formed by compressing the triaxial, the restraining force is released, the volume of the cavernous body is increased by 1.1 times, and the pore diameter of the honeycomb network is 1 millimeter.

4. The process for making an ultra-high strength compressible composite structure according to claim 1, wherein: in the third step, the membrane material is a resin elastic membrane internally provided with a fiber felt.

5. The process for making an ultra-high strength compressible composite structure according to claim 1, wherein: in the fifth step, the liquid to be expanded is polyurethane foaming agent, and is quickly mixed by AB type, isocyanate and curing agent, and then permeates into the grids for 5-6 seconds, the honeycomb grids are slowly expanded by releasing external constraint force, and the volumes of the foaming agents are coordinated to reach the same liquid level, so that the boundaries of the AB type foaming agent and the isocyanate curing agent are kept consistent.

6. The process for making an ultra-high strength compressible composite structure according to claim 1, wherein: in the first step, the mesh material may be one of ultra-fine high molecular weight polyethylene, kevlar fiber and nickel-titanium alloy with super elasticity, and is formed by braiding or casting.