JPS59226492A - Method of producing infrared ray radiator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used in household combustion equipment for heating, cooking, etc.
In particular, the present invention relates to a method of manufacturing an infrared radiator for use as a secondary infrared radiator.

Structure and Problems of Conventional Examples Hitherto, heat-resistant glass, a metal plate with an enameled coating, or a metal plate such as a wire mesh have been used as an infrared radiator.

In the case of heat-resistant glass, although it has the advantage of being transparent to visible light, it has a drawback in heat resistance, so it cannot be heated to temperatures above 600°C and has poor radiation enforcement.

Enamel formed on a metal plate had similar drawbacks related to the melting of the enamel, and the drawback that the primary heating source was not visible because it did not transmit visible light. On the other hand,
When a metal plate such as a wire mesh is used as is, the emissivity of its surface is low and the radiation efficiency is not good.

In addition, it is thought that there are almost no examples of using a composite like the present invention as a conventional radiator of this type, but the method of manufacturing it is carried out by a method such as spraying, and the method of manufacturing a thick film is difficult. there were.

OBJECTS OF THE INVENTION The present invention solves the problems of the conventional art, and has 10
The present invention provides a method for producing an infrared emitter having crystal temperature stability up to 00°C, good infrared properties, and effective intensity.

Structure of the Invention In order to achieve this object, the present invention manufactures an infrared radiator through the following steps.

First, a paste containing a 1-organic silicon polymer and a metal oxide as main components is prepared.

Next, after applying the above-mentioned paint onto the non-adhesive sheet, a breathable structure such as a wire mesh is placed over the coating. Furthermore, apply the above paint completely on top of it and heat it to 100°C.
The composite formed by peeling off the non-adhesive notes after drying at a low temperature of 300°C and finally at 600°C.
Fire it with

Through the above steps, an infrared ray emitter 14) is embedded in the material containing the silicon polymer and the metal oxide that makes the breathable structure suitable.

This configuration V provides an infrared radiator that has both excellent surface thermal properties and good infrared radiation characteristics.

A conceptual diagram of the manufacturing method of the present invention is shown in the explanatory drawings of Examples. In the figure, 1 is a non-adhesive sheet, 2 is a paint containing a metal oxide and an organosilicon polymer, 3 is a breathable structure (in the case of the figure, it is a wire mesh), and 4 is the same paint as 2.

The non-adhesive sheet No. 1 is polyethylene.

A notebook made of resin such as polypropylene or fluororesin, or rubber, or a mica board can be used. In particular, application of polyolefin resin is desirable.

As the organosilicon polymer, a polycarbosilane series using dimethyldicyclosilane as a starting material or a polyborosiloxane series can be used. A resin system containing polyborosiloxane resin as a main component is more desirable from the viewpoint of moldability.

When these organosilicon polymers are heated, the organic matter decomposes and the polymers are successively turned into ceramics. carbon ~ silicon ~ itself
It becomes a boron compound, which alone can be a good infrared emitter.

As the metal oxide, various one-plane thermal oxides can be used. Mainly zirconia, titania, alumina, etc., Co, Mn, Fe, Cu, Ni, O
Transition metal oxides such as r can be used.

The organosilicon polymer and metal oxide are made into a paste using a dispersing machine such as a ball mill.

First, a coating is formed on the non-adhesive sheet using the paster brush or spray.

The breathable structure 3 is placed onto the coating before it dries.

The air-permeable J'f'ff structure can be made of metal, ceramic, etc., but it is preferable to use heat-resistant metal because of its excellent workability. The shape can be a wire mesh shape, a lath mesh shape, a punched metal shape, or the like.

Further, a coating 31 having the same structure as 2 is applied from above the breathable structure 3. As the paint used in this case, it is preferable to use a paint obtained by diluting the coating 4'.I in step 2 with a bath agent to reduce the viscosity. The above are the steps indicated by ■ to ◎. After drying under low pressure at 100°C or lower in O condition, the non-adhesive sheet 1 was removed and the molded body was calcined at 300°C.
Fire at 00°C. Through the above firing process, a dense and defect-free radiator can be obtained. This radiator has a temperature of 1000℃
It can withstand high temperatures well. In addition, when using a polyborosiloxane resin system as the organosilicon polymer, relatively
Since it is also transparent to visible light, when a translucent ceramic (for example, alumina) is selected as the metal oxide, an infrared radiator that is relatively transparent to visible light and has a transparent appearance can be obtained.

Effect of the invention The infrared radiator of the present invention is 1. The manufacturing method is extremely simple and has excellent productivity.

2. It has high heat resistance and can be used even under temperature conditions around 1000°C.

3. Since the raw material system is finely pulverized using a dispersing machine such as a ball mill, a dense structure can be obtained and it is resistant to heat shock. In addition, the distribution of branches is uniform.

4. If the raw material composition is selected, it can be partially transparent to visible light, so it has a wide range of applications as a secondary infrared radiator.

5.As a composite material, due to the synergistic effect of ceramic's strong compressive stress properties and metal's strong tensile stress properties,
A high-intensity infrared emitter is obtained.

There are other effects.

[Brief explanation of drawings]

The figure is a configuration diagram showing a method of manufacturing an infrared radiator according to an embodiment of the present invention. 1... Ruthless M property sheet, 2... Paint containing metal oxide and organosilicon polymer, 3...
Breathable structure. Name of agent: Patent attorney Toshio Nakao and one other person (Hano (B) (C)

Claims (1)

[Claims] (1) A step of applying a paint containing a metal oxide and an organosilicon polymer onto a non-adhesive sheet, then a step of arranging an air-permeable structure on the coated surface; A method for producing an infrared radiator comprising, from the top, a step of applying the paint, and a step of firing the composite formed as described above. (3) Firing conditions: 1 at 260-300°C.