Preparing method of composite water-retention material with hydroxypropylation lobster shells being main raw materials

A technology for hydroxypropylated lobster and main raw material, applied in the field of water-retaining materials, can solve problems such as limiting the scope of application, and achieve the effects of accelerating synthesis rate, high adsorption and slow release, and improving fertilizer utilization rate

Inactive Publication Date: 2017-11-17
全椒县赤镇龙虾经济专业合作社
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Problems solved by technology

This limits its scope of application to some extent

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Embodiment Construction

[0018] A method for preparing a composite water-retaining material using hydroxypropylated lobster shells as a main raw material, comprising the following steps:

[0019] (1) Put 25 parts by weight of lobster shells in a high-pressure steam sterilizer, set the temperature at 125°C, keep warm for 10 minutes, take it out and add 30 parts by weight of 0.3mol / L dilute hydrochloric acid to boil for 25 minutes, cool and wash with water for 3 times , dried in the air, dried at a temperature of 110°C, and ball milled for 75 minutes in a ball mill to obtain a powder for later use;

[0020] (2) Dissolve the product obtained in step (1) in 65 parts by weight of 0.3mol / L sodium hydroxide aqueous solution, stir evenly, put it in the refrigerator for 5 days, add 25 parts by weight of absolute ethanol to dissolve for 45 minutes after thawing , then add 15% by weight of 10% tetramethylammonium hydroxide solution, add 25 parts by weight of propylene oxide while stirring at room temperature, th...

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Abstract

The invention discloses a method for preparing a composite water-retaining material with hydroxypropylated lobster shells as the main raw material. First, the lobster shells are used for high-temperature treatment in a high-pressure steam sterilizer, and then added to dilute hydrochloric acid solution for boiling treatment, ball milling into a fine powder, then dissolve it in sodium hydroxide solution, stir to dissolve it, freeze it, then thaw it, add tetramethylammonium hydroxide solution and propylene oxide to react, add eggshell powder and other ultrasonic reactions After processing vested. The water-retaining material prepared by the invention has high-efficiency water-retaining and moisturizing functions, and has high adsorption and slow-release effects, and can perform fertilizer adsorption and slow-release, thereby improving the utilization rate of fertilizers.

Description

technical field [0001] The invention belongs to the technical field of water-retaining materials, and in particular relates to a method for preparing a composite water-retaining material with hydroxypropylated lobster shells as the main raw material. Background technique [0002] In recent years, my country's crayfish industry has developed rapidly. While satisfying the national material life, it also produces a large amount of waste represented by shrimp shells. Chitin is a natural polymer material obtained by acid-base processing of shrimp, crab or insect shells, and chitosan is a derivative of chitin. [0003] Chitin, also known as chitin, chitin, polyacetylglucosamine, etc., is a linear polymer formed by condensation of N-acetylglucosamine. Its compact crystal structure makes it insoluble in water, dilute acids, alkalis, alcohols and other organic solvents. This limits its scope of application to some extent. However, chitosan, the product of deacetylation, has improv...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/26C08K7/26C08K5/21C08L5/08C08B37/08
CPCC08K3/26C08B37/003C08K5/21C08K7/26C08L5/08
Inventor 王如峰凌武海王子舟王宇渤余红喜任信林
Owner 全椒县赤镇龙虾经济专业合作社
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