JPH01215747A - Ultra-light material and its production - Google Patents

Abstract

PURPOSE:To obtain the title material which is used as a structural material for multistoried buildings having several times strength of the ferro-concrete, by kneading glass balloons of finely small hollow particles as a filler with an adhesive of epoxy resin and molding the mixture by casting it into a mold along the carbon filaments for reinforcement. CONSTITUTION:Glass balloons of finely small hollow particles of about 5-150mu diameter are used as a major filler 2, well kneaded with an epoxy resin adhesive and cast into the frame mold 4 along the carbon filaments 3 which are arranged so that they reinforce the material against the force to be loaded to forma desired shape and integrate the filler 2 with the carbon filaments 3 whereby an ultra-light material 1 is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is applicable to bridging materials such as pillars, beams, and floors of ultra-high-rise buildings with a height of 300 m to 500 m or more above the ground, or walls. The present invention relates to an ultra-lightweight material used as a secondary member such as a curtain wall or a partition, or as a general-purpose structural material to replace existing metal materials, steel frames, concrete members, etc., and a method for manufacturing the same.

Conventional technology Traditionally, steel materials (structural steel) and reinforced concrete members have been commonly used as bridging materials, secondary members, or other general-purpose structural materials in buildings. Fiber-reinforced concrete is used.

Problems to be solved by the present invention For example, when construction of a super high-rise building with a height of 300 m to 500 m or more above ground is planned,
It is clear that existing steel materials and reinforced concrete are too heavy to withstand use, and the reality is that there is a need for the development of revolutionary ultra-lightweight materials to replace them.

Means for Solving the Problems (First Invention) As a means for solving the problems of the above-mentioned prior art, the method for manufacturing an ultra-lightweight material according to the present invention is illustrated in FIGS. 1 and 2 of the drawings. As shown in Figure 2, the aggregate 2 is a glass balloon processed into a hollow sphere with a diameter of about 5 to 150 microns, and the aggregate is kneaded with an adhesive such as an epoxy resin to form a reinforcing material. The process consisted of filling the mold 4 along the long edge 493 of the carbon and integrating and molding the two.

(Second Invention) As a means for solving the above problem, the ultra-lightweight material according to the present invention has a diameter of 5 to 5, as a preferred embodiment is shown in FIGS. A glass balloon processed into a hollow spherical shape with a particle size of about 150 microns is hardened and molded with an adhesive such as epoxy resin, and long carbon fibers for reinforcement are placed in the direction of reinforcing against the stress acting on the member. 3 is arranged to create a composite configuration.

Function The specific gravity of the glass balloon is about 0.2 to 0.3, and the specific gravity of the ultra-light material made using it is about 0.55, which is about 1/4 to 115 that of reinforced concrete, which is very light.

On the other hand, the compressive strength of this ultra-light material is 750 kg/c+m
The 2° bending strength is about 320 kg/cm2, and the compressive strength of reinforced concrete is 300 kg/cm2. Compared to the fact that the bending strength is about 30 kg/cm2, it is clear that it exhibits extremely excellent strength.

Example The present invention will be explained in detail below.

Figures 1 and 2 conceptually show one form of the ultra-lightweight material l manufactured by the method of the present invention, which consists of a glass balloon that is processed into a hollow spherical shape with microscopic particles as the main frame. material 2, this is well kneaded with an adhesive such as epoxy resin, and filled into the formwork 4 along the long edges M3 of reinforcing carbon, thereby forming the main aggregate 2 and carbon long fibers 3. . . . and molded into a desired shape. The long edges of the reinforcing carbon, I13..., are arranged in a direction to reinforce against the stress that will be applied to the member, and both ends are fixed in their arrangement by attaching them to the formwork 4 in advance. , is provided for filling and forming the main aggregate 2.

Next, we will discuss the results of implementation on a trial scale.

First, as the glass balloon serving as the main aggregate, inorganic micro hollow silica balloon Q-CEL600 (particle size distribution 20 to 140 microns, specific gravity 0.2) manufactured by Asahi Glass Co., Ltd. was used.

In addition, as adhesive materials, ■ Epipron 85 manufactured by Dainippon Ink and Chemicals Co., Ltd. is used as the main agent.
An epoxy resin adhesive comprising 5 parts of 0 and 3 parts of Laccamite EA240, also manufactured by Dainippon Ink Industries, as a hardening agent; 3 parts, and 1 part of Epipron 520 manufactured by Dainippon Ink Industries as a diluent.
One of the epoxy adhesives, consisting of a mixture of two parts, was used separately in each case.

Furthermore, as long carbon fibers for reinforcement, old-CARBON (length 12
000 feet with a net weight of 24 kg) was used.

Table 1 below shows ultra-lightweight materials manufactured using the epoxy adhesive described in (1) above, and Table 2 shows ultra-lightweight materials manufactured using the epoxy adhesive described in (2) above.

(Table 1) (Table 2) Each of the above ultra-light material specimens has a composition in which approximately 5 parts of glass balloons are mixed with 13 parts of epoxy adhesive. This was filled into a mold and cured, and the next day the mold was removed and the weight and volume were measured, followed by bending strength and compressive strength tests. The particle size distribution of aggregate is
Adjustments were made to achieve closest packing.

The average values obtained by testing the characteristics of the above specimens 1-1.2.3 and 2-1.2.3 are as follows.

Specific gravity 0.55 Compressive strength 750g kg/cta2 Bending strength 3
20 kg/c 2 Based on the above 2 and above, the specific strength (ratio of weight and strength) and specific unit price (ratio of strength to material unit price) of the ultra-lightweight material l are selected as parameters, and used together with other existing materials. The graph shown in FIG. 3 is what is displayed. As is clear from this graph, the ultra-lightweight material 1 of the present invention is more expensive than structural steel or concrete, but it is as light and strong as aluminum alloy.

As described in detail in conjunction with the examples above and beyond the effects of the present invention, the ultra-lightweight material and the method for manufacturing the same according to the present invention have a lightness of 174 to 115 times that of reinforced concrete, and a compressive strength as low as that of reinforced concrete. The bending strength is about 2.5 times that of reinforced concrete, so it exhibits about 11 times the strength of reinforced concrete.
By using this as a building bridge material or a secondary member, it will greatly contribute to concretely realizing the structural planning and construction of ultra-high-rise buildings 300 m to 500 m or more above ground.

Additionally, this ultra-light material can be widely used as a general-purpose structural material in place of metal, etc., for aircraft and submarines, which require both light weight and strength.

[Brief explanation of the drawing]

Figure yS1 and Figure 2 are a front view and a plan view conceptually showing one form of the ultra-lightweight material manufactured by the method of this invention, and Figure 3 shows the specific unit price and specific strength of the ultra-lightweight material of this invention. It is a graph shown together with other general-purpose materials.

Claims (1)

[Scope of Claims] [1] A glass balloon processed into a hollow spherical shape with micro-particle size is used as an aggregate, and an adhesive such as an epoxy resin is kneaded with the aggregate, and a length of reinforcing carbon is used as the aggregate. A method for producing ultra-lightweight materials characterized by filling along the fibers, integrating and forming them. [2] The glass balloon is made into a hollow spherical shape with microscopic particles and is hardened with an adhesive such as epoxy resin.
An ultra-lightweight material characterized by being composited by arranging reinforcing carbon long fibers in the direction of reinforcing stress acting on the member.