Light clay composition and preparing method

A technology of composition and clay, which is applied in the field of lightweight clay composition and its preparation, can solve problems such as poor tensile properties, and achieve the effects of excellent tensile properties, excellent film-forming properties, and excellent moisture retention

Inactive Publication Date: 2007-11-14
童心奕阳(北京)教育科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lightweight clay composition with excellent tensile properties and a preparation method thereof in order to overcome the shortcomings of existing lightweight clay compositions with poor tensile properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The preparation method of the lightweight clay composition provided by the present invention comprises mixing the binder, water, and hollow microspheres evenly, and then adding a gelling agent and a humectant to knead together, wherein the humectant contains at least sorbitol, The binder contains at least polyvinyl alcohol, and the gelling agent contains at least boric acid.

[0022] Since the present invention only involves improving the formulation of the lightweight clay composition, the above mixing and kneading methods are not particularly limited, and conventional mixing and kneading methods can be used. There is no particular limitation on the order of adding the above-mentioned components. It is preferred to mix the binder, hollow microspheres, water and other optional fiber powders and fillers uniformly, and then add the humectant and gelling agent. Knead. The order of adding binder, hollow microspheres, water, and other optionally contained fiber powder and f...

Embodiment 1

[0026] This example is used to illustrate the lightweight clay composition provided by the present invention and its preparation method.

[0027] 20 parts by weight of polyvinyl alcohol (the degree of polymerization is 2000, the degree of alcoholysis is 88%), 2 parts by weight of vinyl acetate, 2 parts by weight of carboxymethyl cellulose, 6 parts by weight of fiber powder, 8 parts by weight of talcum powder, 2 parts by weight of Mix parts by weight of polyoxyethylene sodium sulfate, mix evenly with 55 parts by weight of water, then mix with 3 parts by weight of sub(di)vinyl chloride acrylonitrile copolymer hollow microspheres with a particle size of 100 microns, and stir evenly Then, 2 parts by weight of sorbitol and 0.1 part by weight of boric acid were added together, and kneaded at 30° C. for 30 minutes to obtain lightweight clay composition S1.

Embodiment 2

[0029] This example is used to illustrate the lightweight clay composition provided by the present invention and its preparation method.

[0030] 12 parts by weight of polyvinyl alcohol (the degree of polymerization is 2000, the degree of alcoholysis is 88%), 2 parts by weight of vinyl acetate, 6 parts by weight of fiber powder, 8 parts by weight of talcum powder, 2 parts by weight of sodium polycarboxylate aqueous solution (St. Produced by Nopco Co., Ltd., the product name is SN-DISPERSANT 54) mixed, mixed evenly with 60 parts by weight of water, and then mixed with 5 parts by weight of vinyl acetate acrylonitrile copolymer with a particle size of 200 microns The hollow microspheres were mixed and stirred evenly, then 1.8 parts by weight of sorbitol and 0.12 parts by weight of boric acid were added together, and kneaded at 20°C for 40 minutes to obtain lightweight clay composition S2.

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Abstract

This invention relates to a light weight clay combination, maintains hollow minuteness sphere, water, gelatinizer, humectant and tackifier. The humectant includes sorbitol, tackifier includes polyvinyl alcohol. Under the mating reaction of polyvinyl alcohol, boric acid and sorbitol, this invention has excellent film-forming properties, could execute 0.1 millimeter thick film, furthermore possess excellent tensile property, could execute different kinds of tenuity shape, especially could execute filament with 0.1 millimetric diameter. This combination also possesses excellent hydrating performance, operability and weather resisting property.

Description

technical field [0001] The invention relates to a lightweight clay composition and a preparation method thereof. Background technique [0002] US 5506280 discloses a moldable plasticine composition containing 4-15% by weight of polyvinyl alcohol, 40-60% by weight of water, 0.1-2% by weight of gelling agent and 10-30% by weight The microspheres, the polyvinyl alcohol is at least partially alcoholylated, the microspheres are plastic microspheres or ceramic microspheres, and the gelling agent is selected from water-soluble borate, resorcinol, catechol, gall acid, 2,4-dihydroxybenzoic acid and Congo red dye, and the water-soluble borate is preferably sodium tetraborate. Based on the total amount of the composition, the content of the gelling agent is 0.15-0.30% by weight. Among them, the gelling agent is used to eliminate the stickiness of the polyvinyl alcohol resin and improve the operability of the composition. In order to increase the plasticity of the polyvinyl alcohol, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/10C04B26/04C04B24/38C04B22/08
Inventor 张蕾
Owner 童心奕阳(北京)教育科技有限公司
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