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Method for preparing natural friction agent by utilizing macadimia nut shell

A technology of nut shells and friction agents, applied in the field of natural product reuse, to achieve stable chemical properties and less damage

Inactive Publication Date: 2017-01-11
JIANGCHENG ZHONGAO AGRI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above are all relevant research and reports on the comprehensive development and utilization of macadamia nut shells, but there is no report on the research on the preparation of natural new abrasives from macadamia nut shells, a very hard natural product.

Method used

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  • Method for preparing natural friction agent by utilizing macadimia nut shell
  • Method for preparing natural friction agent by utilizing macadimia nut shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Crush macadamia nut shells to a fine powder that passes through a 20-mesh sieve;

[0020] (2) The ratio of material to liquid L / L is calculated as 1:7, the fine powder obtained in step (1) is soaked in petroleum ether for 5 hours, after suction filtration, soaked repeatedly 4 times, and the filter residue is dried at 70°C for 2 hours to obtain Defatted Macadamia Nut Shell Powder;

[0021] (3) According to the material-to-liquid ratio L / L, it is 1:40. Add sodium hypochlorite with a concentration of 40wt% to the defatted macadamia nut shell powder obtained in step (2), and use ultrasonic-assisted extraction to decolorize for 25 minutes, repeat 4 times, and filter , discarding the filtrate, collecting the filter residue and drying at 70° C. for 2 hours to obtain decolorized macadamia nut shell powder;

[0022] (4) Superfinely pulverizing the decolorized macadamia nut shell powder obtained in step (3) to a particle size of 15-20 μm, to obtain a crude macadamia nut shel...

Embodiment 2

[0026] (1) Crush macadamia nut shells to a fine powder that passes through a 20-mesh sieve;

[0027] (2) According to the material-to-liquid ratio L / L as 1:5, the fine powder obtained in step (1) was soaked in n-hexane for 4 hours, then soaked repeatedly for 3 times after suction filtration, and the filter residue was dried at 60°C for 1.5h. Obtaining defatted macadamia nut shell powder;

[0028] (3) According to the material-to-liquid ratio L / L, it is 1:30. Add hydrogen peroxide with a concentration of 10wt% to the defatted macadamia nut shell powder obtained in step (2), and use ultrasonic-assisted extraction to decolorize for 20 minutes, repeat 3 times, and filter , discarding the filtrate, collecting the filter residue and drying at 60° C. for 1.5 h to obtain decolorized macadamia nut shell powder;

[0029] (4) Superfinely pulverizing the decolorized macadamia nut shell powder obtained in step (3) to a particle size of 15-20 μm, to obtain a crude macadamia nut shell natur...

Embodiment 3

[0033] (1) Crush macadamia nut shells to a fine powder that passes through a 20-mesh sieve;

[0034] (2) According to the material-to-liquid ratio L / L, it is 1:10. Soak the fine powder obtained in step (1) with absolute ethanol for 6 hours, soak it repeatedly for 5 times after suction filtration, and dry the filter residue at 80°C for 1 hour. Obtaining defatted macadamia nut shell powder;

[0035] (3) The ratio of material to liquid L / L is calculated as 1:50. Add sodium hypochlorite with a concentration of 60wt% to the defatted macadamia nut shell powder obtained in step (2), and use ultrasonic-assisted extraction to decolorize for 30 minutes, repeat 5 times, and filter , discarding the filtrate, collecting the filter residue and drying at 80° C. for 1 hour to obtain decolorized macadamia nut shell powder;

[0036] (4) Superfinely pulverizing the decolorized macadamia nut shell powder obtained in step (3) to a particle size of 15-20 μm, to obtain a crude macadamia nut shell n...

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Abstract

The invention discloses a method for preparing a natural friction agent by utilizing a macadimia nut shell. The method comprises the following steps: crushing the macadimia nut shell; soaking the obtained fine powder with an organic solvent; performing suction filtration and then repeatedly soaking; drying the filter residue, thereby obtaining degreased macadimia nut shell powder; adding a decolorizing agent; adopting an ultrasonic-assisted extraction method for decolorizing, repeating, filtering, abandoning filtrate, collecting the filter residue and drying, thereby obtaining the decolorized macadimia nut shell powder; performing superfine grinding, adding aqueous solution of sodium metabisulfite, soaking, filtering and drying the filter residue, thereby obtaining the natural friction agent. The natural friction agent made from the macadimia nut shell according to the invention is stable in chemical property and the pH is neutral. According to the invention, the high-content cellulose and lignin of the macadimia nut shell are taken as the main ingredients of the natural friction agent, so that the natural friction agent is harmless to tooth and body and is easy to degrade in the environment. The toothpaste made from the natural friction agent containing macadimia nut shell according to the invention has the advantage that the damage of friction agent to tooth is small so that the surface change of the tooth enamel surface is small.

Description

technical field [0001] The invention relates to a method for preparing a natural friction agent by utilizing macadamia nut shells, and belongs to the technical field of natural product reuse. Background technique [0002] Abrasives are daily chemical products, especially the main components of toothpaste, which generally account for 22 to 55% of toothpaste. Commonly used toothpaste abrasives are calcium carbonate, calcium phosphate, sodium metaphosphate, bauxite, and silicon dioxide. Adding substances and using toothpaste with chemical abrasives to brush teeth is not only harmful to the body if swallowed in a small amount, but also pollutes the water body environment after being discharged into waste water after rinsing. Long-term use will also cause harm to the enamel of the teeth. Obvious artificial wedge-shaped defects lead to the occurrence of oral diseases such as gingivitis and dental caries. [0003] Macadamia Macadamia ternifolia F. Muell For mountain dragon eye ( ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/9789A61Q11/00
CPCA61K8/97A61K2800/28A61K2800/82A61Q11/00
Inventor 徐斌
Owner JIANGCHENG ZHONGAO AGRI TECH DEV
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