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High-barrier all-biodegradable BOPLA film and preparation method thereof

An all-biological, high-barrier technology, applied in chemical instruments and methods, flat products, other household appliances, etc., can solve the problem of poor barrier performance of polylactic acid films, eliminate white pollution and marine plastic pollution, and reduce processes. Steps, excellent results of physical and mechanical performance indicators

Inactive Publication Date: 2020-09-25
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the barrier properties of polylactic acid films on the market are not very good and need to be improved

Method used

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  • High-barrier all-biodegradable BOPLA film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The high-barrier, fully biodegradable BOPLA film proposed by the present invention is composed of an upper surface layer, a core layer and a lower layer. The thickness of the upper surface layer and the lower layer respectively account for 10% of the total thickness of the film.

[0027] The upper surface layer is an organic polymer anti-adhesive layer, and its material is blended by weight percentages of the following components: 95% polylactic acid chips, 5.0% organic polymer anti-adhesive masterbatch; among them, the organic polymer anti-adhesive masterbatch is The polymethyl methacrylate microbeads and polylactic acid chips are mixed and co-extruded according to a weight ratio of 3:97. The active ingredient content of the polymethyl methacrylate microbeads is 2500ppm and the particle size is 2.0μm. The thermal decomposition temperature is 260°C.

[0028] The core layer is a quaternary compound polylactic acid layer, and its materials are blended by weight percentages of ...

Embodiment 2

[0040] The high-barrier, fully biodegradable BOPLA film proposed by the present invention is composed of an upper surface layer, a core layer and a lower layer, and the thickness of the upper surface layer and the lower layer respectively account for 13% of the total thickness of the film.

[0041] The upper surface layer is an organic polymer anti-adhesion layer, and its material is blended by weight percentages of the following components: 94% polylactic acid chip, 6.0% organic polymer anti-adhesion masterbatch; among them, the organic polymer anti-adhesion masterbatch is The polymethyl methacrylate microbeads and polylactic acid chips are mixed and melted and co-extruded in a weight ratio of 4:96. The effective ingredient content of the polymethyl methacrylate microbeads is 2800ppm, and the particle size is 2.2μm. The thermal decomposition temperature is 270°C.

[0042] The core layer is a quaternary compound polylactic acid layer, and its material is blended by weight percentag...

Embodiment 3

[0054] The present invention proposes a high-barrier, fully biodegradable BOPLA film, which is composed of an upper surface layer, a core layer and a lower layer. The thickness of the upper surface layer and the lower layer respectively account for 15% of the total thickness of the film.

[0055] The upper surface layer is an organic polymer anti-adhesive layer, and its material is blended by weight percentages of the following components: polylactic acid chips 92%, organic polymer anti-adhesive masterbatch 8.0%; among them, organic polymer anti-adhesive masterbatch is The polymethyl methacrylate microbeads and polylactic acid chips are mixed and melted and co-extruded in a weight ratio of 5:95. The effective ingredient content of the polymethyl methacrylate microbeads is 3000ppm, and the particle size is 2.5μm. The thermal decomposition temperature is 280°C.

[0056] The core layer is a quaternary compound polylactic acid layer, and its materials are blended by weight percentages ...

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Abstract

The invention discloses a high-barrier all-biodegradable BOPLA film and a preparation method thereof, and relates to the technical field of BOPLA films. The film comprises an upper surface layer, a core layer and a lower surface layer, wherein the upper surface layer is an organic polymer anti-sticking layer and is formed by blending the following components in percentage by weight: 92-95% of polylactic acid slices and 5.0-8.0% of organic polymer anti-sticking master batch; the core layer is a quaternary compound polylactic acid layer and is prepared by blending the following components in percentage by weight: 45 to 80 percent of polylactic acid slices, 3 to 30 percent of polycaprolactone, 3 to 30 percent of polypropylene carbonate and 3 to 30 percent of poly 3-hydroxybutyrate; the lowersurface layer is a barrier layer and is prepared by blending the following components in percentage by weight: 65-75% of polylactic acid slices and 25-35% of polyhydroxybutyrate-hydroxyvaleric acid copolyester. The BOPLA film prepared by the method is excellent in physical and mechanical performance indexes, has high barrier property, can be quickly and completely biodegraded in a specific environment, effectively eliminates white pollution and marine plastic pollution, and is green and environment-friendly.

Description

Technical field [0001] The invention relates to the technical field of BOPLA films, and in particular to a high-barrier, fully biodegradable BOPLA film and a preparation method thereof. Background technique [0002] Faced with the increasingly serious white pollution and marine plastic pollution problems, people hope to find a plastic alternative that can replace the performance of current plastics without causing white pollution and marine plastic pollution. Biodegradable plastics have emerged as the times require. The characteristic of this new type of functional plastic is that after it is discarded after reaching a certain service life, under specific environmental conditions, its chemical structure will undergo significant changes, causing certain performance losses and appearance changes and degradation, which is harmless to the natural environment. Or less harmful. [0003] Polylactic acid, an aliphatic polyester, is a new biodegradable material made from starch deri...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/06B32B27/18B32B33/00C08L67/04C08L69/00C08L33/12C08J5/18B29B13/06B29B13/10B29C35/16B29C48/49B29C55/12B29D7/01
CPCB29B13/06B29B13/10B29C35/16B29C55/12B29D7/01B32B27/08B32B27/18B32B27/36B32B33/00B32B2250/03B32B2250/244B32B2307/7163B32B2307/7242B32B2307/7265B29C48/49C08J5/18C08J2367/04C08J2433/12C08J2467/04C08J2469/00
Inventor 年陈瑞王红兵谢城城赵芬娜黄剑
Owner ANHUI GUOFENG PLASTIC
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