WO2002016283A1

WO2002016283A1 - Flame-retardant chaff board

Info

Publication number: WO2002016283A1
Application number: PCT/JP2000/005604
Authority: WO
Inventors: Yasutalou Fujii
Original assignee: Yasutalou Fujii
Priority date: 2000-08-21
Filing date: 2000-08-21
Publication date: 2002-02-28

Abstract

A flame-retardant chaff board (10), characterized in that the board is prepared using chaff as its main material by a method comprising mixing or kneading chaffs with a water-soluble inorganic composition having film-forming property, appliableness or adhesiveness, placing the resultant mixture in a mold followed by drying under pressing, and then removing the mold, to thereby prepare a chaff product (20) having the shape of a plate (30). The chaff board takes advantage of high thermal insulating property, corrosion resistance and lightness which are inherent to chaff and the fact that it is a surplus product, and utilizes the above inorganic composition for canceling the defect of chaff that it is flammable.

Description

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Flame retardant moromi board

Technical field

The present invention provides a mold after mixing or kneading a water-soluble inorganic composition having a film-forming property, a film-forming property, or an adhesive property or an aqueous solution of a water-soluble inorganic composition with rice chaff.

When the mold is removed and the mold is removed, the rice chaff is formed into a plate shape.

Regarding rice husk board.

Background art

In recent years, development projects for the effective use of rice waste, which is agricultural waste, have been a major cause of development projects. As a result, incineration has become impossible and the atmosphere has become more effective, and since the surface is made of silicon, it has moderate hardness and has excellent corrosion resistance. Due to its properties, it is difficult to be easily decomposed even when buried in soil. As a result of being evaluated for various characteristics that are excellent as building materials, such as light weight and light weight, application development to building materials is progressing.

For example, after spraying water on rice husks to wet the surface, then spraying vegetable adhesive powder as an adhesive such as flour, rice flour, and rubber powder, and then spraying water to turn the vegetable adhesive powder into liquid After mixing the mixture with a stirrer and then pressurizing the rice husk to form a block, heat-drying this block to solidify the adhesive, and setting the fiber direction of the rice husk in the horizontal direction Development project of rice husk heat insulating cushioning material and its manufacturing method to form a heat insulating cushioning material aligned with Reference).

Further, for example, in a fire-resistant composite plate in which a core material is formed between non-combustible base materials, the core material is formed by mixing fine particles made of rice hulls into resin of a resol-type phenol foam and foam-hardening the core material. In addition to the core material, at least one lath material is laminated and integrally formed in the core material, and the integration of the non-combustible base material and the core material is fixed by self-adhesion during the formation of the resole type phenol foam. There is a development project for a fire-resistant composite plate with a worn structure (see Japanese Patent Application Laid-Open No. 06-917796).

Further, for example, cement 1 0 0 part by weight, the carbon content 2. Chaff ash 2 5-1 5 0 parts by weight of 5-7 weight ^_0/0, the fibrous material 1 0-4 0 parts by weight and homogenizing agent 5 A composition for a lightweight building material comprising an aqueous slurry containing from 15 to 15 parts by weight, and a method for producing a lightweight building material by forming the aqueous slurry into a plate, curing and drying. There is a project to develop a composition for lightweight building materials and a method for producing lightweight building materials (see JP-A-09-86995). Also, for example, the compressed paddy is bonded by a solidifying material to form a plate-shaped paddy wall material, and an adhesive or other solidifying material is added without adding any crushing to the paddy and stirred. Before the solidified material hardens, it is put into a mold, compressed to a volume of 40 to 70%, kept in that state, waits for solidification of the material, removed from the mold, and taken out. There is a development project on the wall material and its manufacturing method (see JP-A-11-15955).

In addition, in the present invention, application development of inorganic compounds or ceramics is being studied in order to improve the flame retardancy of chaff, but it is known that inorganic compounds or ceramics are originally fireproof and fireproof materials. However, its shape was limited to powder or sintered body, and its application range was limited. However, Japanese Patent Publication No. 07-3655 and Japanese Patent Publication No. · Although an aqueous film-forming inorganic compound having fire-retardant properties is disclosed, application development to rice husk products has been delayed. However, rice husks have a fatal problem that they are easily flammable due to their nature, and it is difficult to form them into plate-shaped slats by the method used to produce wooden building materials. For example, a large amount of adhesive is required for solidification of the molding, resulting in a problem that economic efficiency is deteriorated and market competitiveness is reduced, and there is also a problem that characteristics of the rice husk are offset.

Also, for example, in the development project of rice husk heat insulating cushioning material and the method of manufacturing the same as disclosed in Japanese Patent Application Laid-Open No. H06-89668, after wetting water on the rice husk to wet the surface, wheat flour, rice flour, rubber Vegetable adhesive powder as an adhesive such as powder is sprayed, then water is sprayed to liquefy the vegetable adhesive powder, and then stirred and mixed with a stirrer, and then the rice husk is pressurized. With the method of solidifying the adhesive by heating and drying this block after forming it into a block, it can be determined that the problems of reduced price competitiveness and flame retardancy due to the large amount of adhesive used remain unsolved.

Also, for example, in a project for developing a fire-resistant composite plate disclosed in Japanese Patent Application Laid-Open No. 06-91776, in a fire-resistant composite plate in which a core material is formed during non-combustibility, the core material is a resin of a resol type phenol foam. The core material is formed by mixing and foaming and hardening the fine particles of rice hulls, and at least one lath material is laminated and integrally formed in the core material. It can be determined that the project is a development project that cannot fully utilize the characteristics of the project.

Further, for example, in the development projects of the manufacturing method of JP-A 0 9 8 6 9 9 lightweight building material composition 5 No. and lightweight building materials, cement 1 0 0 part by weight, the carbon content from 2.5 to 7 weight ⁰ / rice hull ash 2 5-1 5 0 parts by weight of _0, fibrous material 1 0-4 0 parts by weight and homogenizing agent 5-1 5 wt lightweight building material assembly consisting of an aqueous slurry one containing portion Narubutsu, and This is a method of producing lightweight building materials by forming the aqueous slurry into a sheet, curing it, and then drying it.However, it is not possible to fully utilize the characteristics of rice husks. Can be determined.

In addition, for example, Japanese Patent Application Laid-Open No. H11-159055 discloses a rice paddy wall material and a method for producing the same. In the development project of the law, compressed paddy husks are combined with a solidification material to form a slab-like paddy hull wall material, and an adhesive or other solidification material is added without adding any crushing to the paddy husks and stirring Then, before the solidified material is hardened, it is put into a mold, compressed to a volume of 40 to 70%, held in that state, and waits for solidification of the material, and then removed from the mold to take out the mold. However, it can be concluded that the problems of reduced price competitiveness and flame-retardant 'I' life due to the large use of adhesives or solidified materials have not been solved.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to achieve a high rice paddy! / ヽ Water insulation ゃ To make full use of the advantages of corrosion resistance and light weight and a large amount of excess Alternatively, it is an object of the present invention to provide a flame-retardant rice hull board using rice hulls as a main raw material by using a water-soluble inorganic composition or an aqueous solution of a water-soluble inorganic composition having coatability or transferability. Disclosure of the invention

The flame-retardant rice hull board of the present invention is characterized in that, in a rice husk, a water-soluble inorganic composition having a film-forming property, a film-forming property, or an adhesive property or a water-soluble night of a water-soluble inorganic composition is 1% by weight to 20% after weight ^_0/0 mixed or kneaded, put into a mold and compressed into 5 0-9 0 percent capacity, drying the mixture or kneaded product was kept in that state, taken to remove the mold Thus, the rice chaff was formed into a plate shape. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view illustrating one embodiment of a flame-retardant rice hull board according to the present invention.

FIG. 2 is a thermal conductivity test result table for explaining one embodiment of the flame-retardant rice hull board according to the present invention.

FIG. 3 is a diagram illustrating an embodiment of a flame retardant rice porch according to the present invention. It is a sinterability test result table.

FIG. 4 is a total calorific value curve illustrating one embodiment of the flame retardant rice hull board according to the present invention.

FIG. 5 is a heating rate curve for explaining one embodiment of the flame retardant rice hull board according to the present invention.

FIG. 6 is a total smoke emission curve illustrating one embodiment of the flame retardant rice hull board according to the present invention.

FIG. 7 is a specimen mass reduction curve illustrating one embodiment of the flame retardant rice hull board according to the present invention.

FIG. 8 is a total calorific value curve for explaining an example of the flame-retardant rice cake board according to the present invention.

FIG. 9 is a heating rate curve for explaining an example of the flame-retardant rice cake board according to the present invention.

FIG. 10 is a total smoke emission curve illustrating one embodiment of the flame retardant rice hull board according to the present invention.

FIG. 11 is a specimen mass loss curve for explaining an example of the flame-retardant rice cake board according to the present invention.

FIG. 12 is a total calorific value curve illustrating an embodiment of the flame retardant rice porcelain port according to the present invention.

FIG. 13 is a heat generation rate curve for explaining an example of the flame retardant rice porch according to the present invention.

FIG. 14 is a total smoke emission curve illustrating an example of the flame-retardant rice cake board according to the present invention.

FIG. 15 is a specimen mass reduction curve for explaining an example of the flame-retardant rice husk board according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows that in one embodiment of the obscure rice husk board of the present invention, the water-soluble inorganic composition having a film-forming property, a coating property or an adhesive property is added to the rice husk 20 in an amount of 1% by weight to 20%. In the examples of the present invention, the aqueous film-forming inorganic compounds disclosed in JP-B-07-365 and JP-B-07-14801 are mixed. Apply. This aqueous film-forming inorganic compound is extremely excellent in fire resistance and fire resistance.Before the aqueous film-forming inorganic compound is dried, it is put into a mold and compressed to a volume of 50 to 90%. While holding, the aqueous film-forming inorganic compound was dried by heating or warm air, and the mold was removed and taken out to form paddy rice 20 into a plate-like shape 30.

FIG. 2 and FIG. 3 show the test results of the examples of the present invention in a table. A thermal conductivity test and a flammability test were performed.

The test method was as follows: The thermal conductivity test was performed in accordance with JISA 1412-2 [Measurement method of thermal conductivity and thermal resistance of thermal insulating material-Part 2: Heat flow meter method (HFM 'method)]. Heat flow meter (two-sheet method, downward heat flow). The flammability test was performed in accordance with IS O / WD 5660 [Fire tests- ± action to lire-Part 1: Heat release (cone calorimeter method)].

The measurement interval of test data was 2 seconds.

FIG. 2 is a table showing the results of the thermal conductivity test, and FIG. 3 is a table showing the results of the flammability test.

Table 1 shows the material and quantity of the test pieces as shown in the table below.

In the flammability test, the side and back surfaces were covered with aluminum foil with a thickness of 25, and then placed in a steel specimen frame with an opening of 94 mm x 94 mm. Was served. Table 1 Specimens

In this example, the aqueous film-forming inorganic compounds disclosed in Japanese Patent Publication No. 07-3655 and Japanese Patent Publication No. 07-14801 were used. In addition, the present invention can be implemented as long as it is a water-soluble inorganic composition having a coating property or an adhesive property. Industrial Available Individuals

According to the present invention, the resulting flame-retardant rice husk board 10 is lightweight and has excellent air permeability, and furthermore has excellent air permeability, excellent heat insulation, and excellent flame resistance and durability. There are effects such as checking.

In addition, the flame-retardant moromi board 10 obtained from the properties of the aqueous film-forming inorganic compound, which is a water-soluble ceramic used, has particularly improved flame retardancy, heat insulation and durability, and is lightweight and breathable. It has excellent effects such as excellent insect repellency and fungicide resistance.

In addition, by using a water-soluble inorganic composition having film-forming properties, coating properties, or tackiness, the rice chaff can be formed into a plate shape without using an adhesive or a fixing agent, so that the cost can be reduced. We can provide flame-retardant polished boards that are highly blind.

Claims

The scope of the claims

1. After mixing or kneading 1% by weight to 20% by weight of a water-soluble inorganic composition having film-forming properties or versatility or adhesiveness with rice hulls, put the mixture into a mold, and then add 50 to 90%. %, And the mixture or the kneaded material is dried while maintaining the state, and the rice chaff is formed into a plate shape by removing and removing the mold. Sexuality board.