KR840000066B1 - A clay for teaching material - Google Patents

Abstract

A powdered clay-like material for education which becme to have plasticity by adding water is made by mixing natural fiberous powder 8 parts and powdered binder 2 parts containing wheat flour,soda ash and slaked lime, adding samall amount of bentonite, surfactant, and P.V.A.

Description

Powder substitute for art textbook

The present invention is a natural fiber powder, such as wood powder or paper powder, and mixed with a flour binder material mixed with soda ash and slaked lime in flour at a ratio of 8: 2 and stored in a plastic bag, and added to the appropriate amount of water immediately kneaded clay substitute immediately This is a composition for art teaching materials.

Conventional art work clay is a natural clay crushed and kneaded in water, so it is difficult to transport or handle, and it is not easy to crack when it is dried, and it is difficult to paint on the surface. There was a drawback that was very inconvenient to do.

The present invention is to succeed in the development of the corresponding clay that has the advantage of easy to use and convenient to use, easy to use, no cracking after drying, easy to paint after drying and easy handling and preservation, in order to correct the above-mentioned drawbacks, Mixing the mixed substance that acts as a binder to the natural fiber powder, the drying accelerator and the air dispersing agent to increase the strength after drying, packaging in powder form in a plastic bag and adding a predetermined amount of water during use to make substitute clay immediately. It will be described in detail as follows.

1. Preparation of fiber powder, wood powder or paper powder is broken down like flour and dried.

2. Preparation of the binder agonist, soda ash and slaked lime in a weight ratio of 106: 75 to mix the powder mixture and flour again in a weight ratio of 80: 300 to make a powder mixture.

3. After drying strength heavy agent, thixotropic accelerator, and bentite powder.

4. Air entrainer and dispersant surfactant.

5. Drying accelerators, dosonite or volcanic agents (pumice)

6. Auxiliary binder, a) C.M.C, b) P.V.A, c) Soda alginate, d) Arabia rubber, water-soluble polymers.

Hereinafter, the present invention will be described in detail with reference to Examples.

EXAMPLE

Substituted clay of the present invention prepared as described above is a natural fiber powder paper powder and binder powder powder mixed in each other in a plastic bag and injecting water after injecting the plastic bag from the outside to inject the powder material in the state of the powder in the bag Is kneaded and immediately reacts to form an adhesive and curable clay-like composition. In the composition of the present invention, in addition to the natural fiber powder and the binder lattice powder, surfactant and bentite are added, It prevents the formation of bruises and does not generate bubbles inside. Its role as an adhesion aid enhances the adhesion of the fiber powder, and the dosonite promotes drying. It is possible to form a fine model, it has the advantages of light weight, easy coloring, and efficient work. There point.

Claims (1)

As described above in the text, a powder binder mixed with wheat flour, soda ash, and slaked lime is mixed in a ratio of 8: 2, and a small amount of bentite, a surfactant, and a dosonite PVA is added to the natural fiber powder, and then packed in a plastic bag. Substitute clay.