Full-biodegradable film with poly-carbonic acid 1,2-propylene diester as substrate and production method thereof

A technology for degrading films and polybutylene succinate, which is applied in the field of fully biodegradable films and preparation methods, can solve the problems of high production cost, poor mechanical properties, and difficulty in large-scale use, and achieves improved melt strength, cost reduction effect
CN101402789AInactive Publication Date: 2009-04-08CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2009-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a biodegradation thin film which takes poly (propylene carbonate) as matrix and a preparation method thereof. The thin film takes biodegradation poly (propylene carbonate) as matrix and is blended with biodegradation polyester and an auxiliary agent which can be in contact with food directly to prepare a special material for blown film. If a blown film is produced by common blown film equipment, the mechanical property of the film is close to that of linear low density polyethylene. The tensile strength and the elongation at break of the biodegradation thin film provided by the invention can respectively reach as high as 37MPa and 680 percent; and the tensile strength and the elongation at break of the linear low density polyethylene sold on markets are respectively 30MPa and 710 percent.
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Description

technical field

[0001] The invention belongs to the technical field of plastic films, and in particular relates to a fully biodegradable film with 1,2-propylene carbonate polycarbonate as a matrix and a preparation method. Background technique

[0002] Packaging bags, garbage bags, agricultural mulch and other film products are widely used in daily life and have a short service life. Since most of these products are currently produced with non-biodegradable plastics (PE, PP), often To cause "white pollution", the use of fully biodegradable plastic film is one of the important solutions.

[0003] 1,2-propylene glycol polycarbonate is a fully biodegradable plastic synthesized by the copolymerization of carbon dioxide and propylene oxide. Because carbon dioxide is used as a raw material (42-43% by weight) in the synthesis process, in addition to preventing white pollution caused by ordinary plastic films, it also has certain significance for reducing greenhouse gas emissions. ...

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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