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Artificial pearl nucleus material and preparation method thereof

A technology for artificial pearls and nuclear materials, applied in the direction of climate change adaptation, etc., can solve problems such as scarcity and shortage of pearl core materials, and achieve the effect of solving recycling and low production costs

Inactive Publication Date: 2012-10-17
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an artificial pearl core material for the current shortage of pearl core materials, which can effectively alleviate a series of problems caused by the shortage of pearl core material resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In 18 grams of 0.6% (by weight) chitosan (deacetylation degree of 81%, molecular weight of 6 × 10 5 ) Add 3.9 g of polyvinyl alcohol (type 17-99) to the aqueous solution of acetic acid, stir for 20 minutes, soak and swell for 24 hours, heat to 70°C, stir for 10 minutes while hot to fully dissolve, then stop heating, and add 12.5 grams of horseradish in turn while stirring Pinctada martensii shell powder (800 mesh) and 19.0 grams of Pinctada martensii shell fragments (40 mesh) and 2 grams of 11.5% (weight ratio) sodium tripolyphosphate aqueous solution, after continuing to stir for 30 minutes, pour the mixture into In the mold (coat the release agent on the inner wall of the mold in advance), vibrate with a vibrator for 30 minutes, vacuum degassing, cure at room temperature for 48 hours, and vacuum dry at 60°C for 2 hours, demoulding to obtain artificial pearl cores Finished material.

Embodiment 2

[0026] In 17 kg of 0.7% (by weight) chitosan (deacetylation degree of 84%, molecular weight of 5 × 10 5 ) Add 3 kg of polyvinyl alcohol (type 19-99) to the acetic acid aqueous solution, stir for 15 minutes, soak and swell for 20 hours, heat to 65°C, stir while hot for 5 minutes to fully dissolve, then stop heating, and add 12 kg of horseradish in turn while stirring Pearl oyster shell powder (800 mesh) and 18 kg of pearl oyster shell fragments (40 mesh) and 1 kg of 11.5% (weight ratio) sodium tripolyphosphate aqueous solution, after continuing to stir for 20 minutes, pour the mixture into In the mold (coat the release agent on the inner wall of the mold in advance), vibrate with a vibrator for 20 minutes, vacuum degas, cure at room temperature for 40 hours, dry at 50°C for 1 hour, and release the mold to obtain artificial pearl cores Finished material.

Embodiment 3

[0028] In 19 kg of 1.2% (by weight) chitosan (deacetylation degree of 90%, molecular weight of 7 × 10 5 ) Add 5 kg of polyvinyl alcohol (type 17-88) to the acetic acid aqueous solution, stir for 20 minutes, soak and swell for 30 hours, heat to 80°C, stir for 15 minutes while hot to fully dissolve, then stop heating, and add 14 kg of horseradish in turn while stirring Pinctada martensii shell powder (800 mesh) and 20 kg of Pinctada martensii shell fragments (40 mesh) and 3 kg of 11.5% (weight ratio) sodium tripolyphosphate aqueous solution, after continuing to stir for 40 minutes, pour the mixture into In the mold (coat the release agent on the inner wall of the mold in advance), vibrate with a vibrator for 40 minutes, degas in vacuum, cure at room temperature for 55 hours, dry in vacuum at 70°C for 3 hours, and release the mold to obtain artificial pearl cores Finished material.

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PUM

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Abstract

The invention relates to an artificial pearl nucleus material and a preparation method thereof. The artificial pearl nucleus material is prepared form the raw materials of a chitosan acetic acid aqueous solution, polyvinyl alcohol, 800-mesh pinctada martensii shell powder, 40-mesh pinctada martensii shell crushed aggregates and a sodium tripolyphosphate aqueous solution of which the weight ratio is 11.5%. The preparation method of the artificial pearl nucleus material comprises the following steps of: adding the polyvinyl alcohol into the chitosan acetic acid aqueous solution, stirring, soaking, swelling for 20 to 30 hours, and then heating the mixture; stirring the mixture when the mixture is hot to ensure that the polyvinyl alcohol is fully dissolved in the chitosan acetic acid aqueous solution, and then stopping heating; sequentially adding the 800-mesh pinctada martensii shell powder, the 40-mesh pinctada martensii shell crushed aggregates and the sodium tripolyphosphate aqueous solution while stirring; continuously stirring, and then pouring the mixture into a mould; and oscillating the mould by using an oscillator, then performing vacuum degassing, curing at the normal temperature, performing vacuum drying, and demoulding to obtain a finished product of the artificial pearl nucleus material. The artificial pearl nucleus material solves the problem of pearl nucleus raw material shortage, and also solves the problem of recycling of pinctada martensii shells; and simultaneously, the artificial pearl nucleus material dose not contain toxic and hazardous substances such as benzene, formaldehyde and the like, and is lower in production cost.

Description

technical field [0001] The invention relates to a pearl core material and a preparation method thereof, in particular to an artificial pearl core material and a preparation method thereof, belonging to the technical field of pearl cultivation. Background technique [0002] So far, saltwater cultured pearls have been nucleated pearls. Pearl nuclei are one of the important raw materials for cultivating seawater cultured pearls and are indispensable. Nacre can be grown on almost any solid material, so many solid materials can be used to make pearl nuclei. In the early days of pearl cultivation, people used lead, silver, clay, pottery, glass, plant seeds and other raw materials to make pearl cores, and later used shells as raw materials to make pearl cores. However, the powder produced by drilling pearls grown with lead, silver and other metal pearl cores is not easy to discharge, which often leads to broken needles; ceramic and glass pearl cores are too hard to drill hole...

Claims

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Application Information

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IPC IPC(8): C04B26/28C04B14/28
CPCY02A40/81
Inventor 黄甫
Owner GUANGDONG OCEAN UNIVERSITY
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