Crab shell powder chemical treatment method, enhanced polylactic acid 3D printing material and preparation method thereof

A chemical processing and 3D printing technology, applied in the direction of additive processing, can solve the problems of single color and poor mechanical properties, and achieve the effect of excellent mechanical properties, good printing performance, and increased added value.
CN110698571AInactive Publication Date: 2020-01-17SOUTH CHINA AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA AGRI UNIV
Publication Date
2020-01-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the fields of solid waste treatment and fused deposition modeling 3D printing technologies and particularly relates to a crab shell powder chemical treatment method. Accordingto the method, surfaces of crab shells are cleaned, the crab shells are smashed to obtain brown crab shell powder, the crab shell powder is soaked in a container containing a dilute acid solution, the solution is filtered, washed and dried to obtain orange crab shell powder, multiple steps can be sequentially performed subsequently to obtain light-red crab shell powder, light-yellow crab shell powder and milk-white crab shell powder respectively, and the chemically treated crab shell powder is mixed with polylactic acid, a flexibilizer and a lubricant for 3D printing. Through the method, waste crab shells are chemically treated, then a polylactic acid 3D printing material is prepared, the preparation process is simple, added value of crabs is increased, environmental pollution is relieved, and the prepared polylactic acid 3D printing material not only has good mechanical properties and printing properties but also is environment-friendly and unique in color.
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Description

technical field

[0001] The invention belongs to the technical field of solid waste treatment and fused deposition modeling 3D printing, and specifically relates to a method for chemically treating crab shell powder, a reinforced polylactic acid 3D printing material and a preparation method thereof. Background technique

[0002] In recent years, as the output of crabs in our country has increased year by year, how to effectively use the discarded crab shells produced in the processing process, reduce environmental pollution, and increase the added value of products is of great significance to the development of the crab industry. Crab shells are rich in active ingredients such as chitin, protein, pigments, and inorganic salts. How to effectively extract and rationally utilize them has always been a research hotspot, especially the extraction of chitin from discarded crab shells has attracted widespread attention. At present, the extraction of chitin from discarded crab shells...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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