Polylactic acid/cellulose bio-based degradable composite material and preparation method thereof

A composite material, polylactic acid technology, applied in the field of polylactic acid/cellulose bio-degradable composite materials and its preparation, can solve the problem of thermal stability of polylactic acid/cellulose, failure to meet due requirements, organic solvents Unfavorable environmental protection and other issues, to achieve the effect of easy control, fast crystallization rate and simple operation
CN107698951AInactive Publication Date: 2018-02-16ZHEJIANG XINLI NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG XINLI NEW MATERIAL CO LTD
Publication Date
2018-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polylactic acid / cellulose bio-based degradable composite material and a preparation method thereof. The polylactic acid / cellulose bio-based degradable composite material is prepared from the following raw materials in parts by weight: 40-85 parts of polylactic acid, 5-25 parts of a dextral polylactic acid-type polyurethane elastomer, 2-10 parts of maleic anhydride graftedpolylactic acid and 10-50 parts of cellulose, wherein the number average molecular weight of the polylactic acid is 100000-300000. The polylactic acid / cellulose bio-based degradable composite material is safe, non-toxic, biodegradable and excellent in mechanical properties. The preparation method comprises the following steps: uniformly mixing components, then adding into a twin-screw extruder, performing melt blending, drawing into strips, pelletizing, and drying to obtain the composite material. The preparation method is simple, easy to control, strong in operability and easy to implement,the production cost is low, and the industrial mass production is easy; the prepared composite material can be applied to the field of interior trim parts, films, fibers or other specially shaped materials and the like.
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Description

technical field

[0001] The invention relates to the technical field of polylactic acid composite materials, in particular to a polylactic acid / cellulose bio-based degradable composite material and a preparation method thereof. Background technique

[0002] Cellulose is the most abundant and widely sourced biomass polymer in nature, which exists in tree inner bark, wood, plant seeds, leaves, roots, stems, etc. As an excellent reinforcing material, plant fiber is the most widely used because of its simple processing and low cost. Cellulose has the characteristics of high strength, high modulus and low density. The mechanical properties of flax and soft wood kraft fiber can be compared with the most common reinforcing material E-glass fiber. At the same time, compared with glass fiber, cellulose has many other advantages: (1) cellulose is renewable, has a wide range of sources, and is easy to obtain; (2) cellulose-reinforced plastics are discarded in landfill or burned, and th...

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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