Formula and preparation method of water-based boron-free ultralight clay with excellent ductility

A water-based and clay technology, applied in the field of ultra-light clay and its preparation, can solve the problems of disposal and toxicity, and achieve the effect of high safety and excellent ductility

Active Publication Date: 2022-01-28
SHANGHAI M&G STATIONERY INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some researchers believe that long-term excessive intake of boron has toxic effects on human reproduction, development and endocrine system
Although some manufacturers use borax to make the boron element migration in ultra-light clay can meet the current existing detection standards, but as consumers and the market have higher and higher requirements on the quality and safety technology of children's art supplies, the content of Boron's children's art supplies will gradually be abandoned by consumers and the market

Method used

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  • Formula and preparation method of water-based boron-free ultralight clay with excellent ductility
  • Formula and preparation method of water-based boron-free ultralight clay with excellent ductility
  • Formula and preparation method of water-based boron-free ultralight clay with excellent ductility

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preparation example Construction

[0024] The present invention also provides a method for preparing the above-mentioned water-based boron-free ultralight clay, comprising: S1, dissolving sodium polyacrylate in water to form a dispersion system that is uniform and free of granular substances; S2, kneading the dispersion system into a semi-finished product, Stir evenly after adding foaming agent; and S3, add essence, pigment, bittering agent and humectant to the mixture formed in step S2 in sequence, stir and knead evenly. The effect of S1 step is that the powder of sodium polyacrylate is dissolved completely in water, forms gel. The effect of S2 step is to mix whipping agent and gel with kneader, reduce overall density. The role of the S3 step is to give the super light clay the apparent properties, fragrance, color, bitterness and moisturizing properties.

[0025] In an optional embodiment, it also includes: S4, placing the mixed material formed in step S3 in a molding device, and encapsulating to obtain wate...

Embodiment 1

[0029] An ultra-light clay, its components are: 3wt% food-grade sodium polypropionate with a number average molecular weight of 50 million, 5wt% Excellence 920DU 80 foaming agent, 0.1wt% essence, 2wt% pigment, 0.1wt% % denatonium benzoate, 2 wt% sodium carboxymethylcellulose, 2 wt% glycerin and 85.8 wt% water.

[0030] The above-mentioned ultralight clay was prepared by the following steps:

[0031] (1) Sodium polypropionate with number-average molecular weight 50 million is dissolved in water, and dissolved to the whole evenly and without granular matter;

[0032] (2) Add the semi-finished product obtained in step (1) into the kneader, add Excellence 920DU 80 foaming agent, then start the kneader and stir for 30 minutes;

[0033] (3) Open the kneader, add essence, pigment, denatonium benzoate, sodium carboxymethyl cellulose, glycerin successively in the kneader, stir, knead evenly;

[0034] (4) Place it in a molding device and encapsulate to obtain water-based ultra-light c...

Embodiment 2

[0039] An ultra-light clay, its components are: 4wt% of sodium polypropionate with a number average molecular weight of 50 million, 6wt% of Expancel 920DU 120 foaming agent, 0.1wt% of essence, 2wt% of pigment, 0.1wt% of Denatonium benzoate, 2 wt% sodium carboxymethylcellulose, 2 wt% glycerin and 83.8 wt% water.

[0040] The above-mentioned ultralight clay was prepared by the following steps:

[0041] (1) Sodium polyacrylate with number average molecular weight 50 million is dissolved in water, dissolved to the whole evenly and without granular matter;

[0042] (2) Add the semi-finished product obtained in step (1) into the kneader, add Expancel 920DU 120 foaming agent, and then start the kneader and stir for 30 minutes;

[0043] (3) Open the kneader, add essence, pigment, denatonium benzoate, sodium carboxymethyl cellulose, glycerin successively in the kneader, stir, knead evenly;

[0044] (4) Place it in a molding device and encapsulate to obtain water-based ultra-light cla...

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Abstract

The invention provides water-based boron-free ultralight clay, which is prepared from the following components in percentage by weight: 2 to 8 percent of sodium polyacrylate, 2 to 10 percent of a foaming agent, 0.1 to 0.3 percent of essence, 0.1 to 5.0 percent of pigment, 0.1 to 0.3 percent of a bitter agent, 2 to 5 percent of a humectant and 80 to 95 percent of water, wherein the total mass of the water-based boron-free ultralight clay is 100 percent. According to the water-based boron-free ultralight clay disclosed by the invention, sodium acrylate is mainly adopted to form the ultralight clay, so that the water-based boron-free ultralight clay does not contain boron elements and is high in safety. Meanwhile, when the sodium polyacrylate with high number-average molecular weight is dissolved in water, molecular chains are lengthened due to the ion phenomenon of many anion groups in sodium polyacrylate molecules, and finally hydrogel with very high elasticity is formed, so that the ultralight clay has excellent ductility.

Description

technical field [0001] The invention relates to the technical field of ultra-light clay, in particular to an ultra-light clay which does not contain boron in an aqueous system and has excellent ductility and a preparation method thereof. Background technique [0002] Ultra-light clay has strong plasticity and bright colors, and craftsmen can freely knead and create freely. It is the latest hand-made material that combines the advantages of clay, paper clay, sculpture clay, plasticine, etc. It can be used in perfect combination with wood, metal sheet, sequins, glass and other materials. The works made of ultra-light clay are not only It needs to be grilled, it can be air-dried naturally within 24-48 hours and is elastic, not crumbling, and can be stored forever. [0003] At present, ultra-light clay products on the domestic market are mainly composed of polyvinyl alcohol, borax, water, foaming agent, coloring agent and moisturizing agent, and its main elastic structure is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08L1/28C08K5/053C08J9/32
CPCC08J9/32C08J2333/02C08J2401/28C08K5/053C08J2203/22
Inventor 郭亨长郭家兴陈奇姚鸿俊
Owner SHANGHAI M&G STATIONERY INC
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