JPH08283054A - Heat resistant high strength composite material - Google Patents

Abstract

PURPOSE: To obtain a heat resistant high strength composite material capable of exhibiting high strength even at high temp. CONSTITUTION: A binder as a base material is mixed with carbon fibers made from polyacrylonitrile as a reinforcing material and graphite as a strengthening material. The resultant mixture is molded by a molding means such as injection molding and is solidified to obtain a high strength heat resistant molded body having tensile strength and a modulus of tensile elasticity considerably increased by the dynamic characteristics of the carbon fibers and heat resistance considerably improved by mixing with the graphite.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat resistant and high strength composite material.

[0002]

2. Description of the Related Art Conventionally, cement, resin and the like have been well known as strength materials widely used in various fields.

[0003]

However, in general, a strength material made of cement, resin or the like tends to exhibit mechanical strength and brittleness at high temperatures, and thus has a problem of lacking strength and heat resistance. there were.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat-resistant high-strength composite material capable of exhibiting high strength even at high temperatures.

[0005]

The present invention is characterized in that a polyacrylonyl tolyl-based carbon fiber is mixed as a reinforcing material and graphite is mixed as a reinforcing material in a binder as a base material. The present invention relates to a heat resistant and high strength composite material.

Further, as the binder serving as the base material, it is possible to adopt one having cement as a main raw material or one having a heat resistant resin as a main raw material.

[0007]

Therefore, in the heat-resistant and high-strength composite material of the present invention, the mechanical properties of the polyacrylonyl tolyl-based carbon fiber significantly improve the tensile strength and the tensile elastic modulus, and the addition of graphite significantly improves the heat resistance. Since the polyacrylonyl tolyl-based carbon fiber and graphite are mixed together, the strength and heat resistance performance are significantly improved by the synergistic action, and high strength can be exhibited even at high temperature.

In particular, a polyacrylonyl tolyl-based carbon fiber as a reinforcing material and a graphite as a reinforcing material are mixed in a binder obtained by mixing and mixing water with cement as a main raw material, and the mixture is injection molded or the like. When the molded product is molded by using the above-mentioned molding means and is cured to be solidified into a molded product, a molded product having higher strength and heat resistance than the ordinary cement molded product can be obtained.

Further, a polyacrylonyl tolyl-based carbon fiber is mixed as a reinforcing material and a graphite is mixed as a reinforcing material in a binder which is melted and softened by using a powder or granular heat-resistant resin as a main raw material. When the mixture is molded using a molding means such as injection molding, and when it is solidified by cooling it into a molded body, it has higher strength and heat resistance than ordinary heat-resistant resin molded bodies. The body is obtained.

[0010]

EXAMPLES Examples of the present invention will be described below.

Polyacrylonyl tril (in a binder obtained by mixing fine aggregate (sand), silica-based admixture such as silicate clay, calcium carbonate powder, etc. with cement as a main raw material and water and kneaded. PAN) is made incombustible and then steam-baked in an oxygen-free state at about 1000 ° C. to obtain a mixture of polyacrylonyl tolyl-based carbon fibers as a reinforcing material, and powdered graphite as a reinforcing material. It is solidified by injection molding and curing to obtain a molded body.

Here, the polyacrylonyl tolyl-based carbon fiber and graphite are preferably mixed in a ratio of 6: 4, and mixed in an appropriate amount in the binder.

The molded product obtained as described above has a significantly improved tensile strength and tensile modulus due to the mechanical properties of the polyacrylonyl tolyl carbon fiber.
Moreover, since the heat resistance is greatly improved by mixing graphite, the strength and heat resistance performance is significantly improved by the synergistic effect of mixing the polyacrylonyl tolyl-based carbon fiber and graphite, and high strength even at high temperatures. Can be demonstrated.

In particular, as in this embodiment, a binder obtained by mixing water with cement as a main raw material and kneading is mixed with polyacrylonyl tolyl-based carbon fiber as a reinforcing material and graphite as a reinforcing material, When the mixture is injection-molded and cured to be solidified into a molded body, a molded body having higher strength and heat resistance than a normal cement molded body can be obtained.

In addition, since a molded body made of a binder whose main material is cement has a high compressive strength, it is possible to obtain a tensile strength by mixing the polyacrylonyl tolyl carbon fiber. If the tensile elastic modulus is greatly improved, it will be extremely excellent as a strength material, and if the heat resistance is greatly improved by mixing graphite, it will be extremely useful as a building material such as the outer wall or exterior of a building. Will be things.

As the binder, a heat-resisting resin as a main raw material may be used, and a powder or granular heat-resisting resin as a main raw material is melted and softened in the binder to be used as a reinforcing material. When polyacrylonyl tolyl-based carbon fibers are mixed and graphite is mixed as a reinforcing material, the mixture is injection-molded, and the mixture is cooled to solidify into a molded body. A molded product having high strength and heat resistance as compared with the product can be obtained.

Therefore, according to the above-mentioned embodiment, it is possible to obtain a heat-resistant high-strength composite material capable of exhibiting high strength even at high temperatures, so that it can be widely used in various fields in place of conventional cement products and heat-resistant resin products. You can

The heat-resistant and high-strength composite material of the present invention is not limited to the above examples, and the compounding ratio of polyacrylonyl tolyl-based carbon fiber and graphite is 6:
It is possible to arbitrarily change it in accordance with the purpose and application based on 4, and the mixing ratio with respect to the binder as the base material is also arbitrary, and other various changes within the scope not departing from the gist of the present invention. Of course, it can be added.

[0019]

The heat-resistant high-strength composite material of the present invention as described above makes it possible to obtain a heat-resistant high-strength composite material capable of exhibiting high strength even at high temperatures. It has an excellent effect that it can be widely used in place of the heat-resistant resin product.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area C08J 5/10 C08J 5/10 E04C 2/04 E04C 2/04 F 2/20 2/20 F / / C08K 7/02 KCJ C08K 7/02 KCJ

Claims (3)

[Claims] 1. A heat-resistant and high-strength composite material comprising a binder as a base material, a polyacrylonyl tolyl-based carbon fiber as a reinforcing material, and graphite as a reinforcing material. 2. The heat-resistant high-strength composite material according to claim 1, wherein the binder as a base material is mainly composed of cement. 3. The heat-resistant high-strength composite material according to claim 1, wherein the binder serving as a base material is a heat-resistant resin as a main raw material.