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Degradable environment-friendly membrane material as well as preparation method and production system thereof

A membrane material, an environmentally friendly technology, applied in chemical instruments and methods, sustainable manufacturing/processing, biological packaging, etc., can solve the problems of destroying the ecological balance of nature, PLA application restrictions, soil and water pollution, etc., and achieve excellent thermal stability , the effect of excellent service performance

Inactive Publication Date: 2021-02-02
深圳市鼎通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, PET (polyethylene terephthalate) film and PP (polypropylene) film with good mechanical properties are used as packaging environmental protection film materials or protection environmental protection film materials. However, with the improvement of people's living standards, in order to pursue Convenience, the extensive use of non-naturally degradable PET film and PP film has further led to serious health and environmental problems, because these environmentally friendly film materials themselves will release harmful gases, which will accumulate in the sealed bag for a long time, and the concentration will increase with the sealing time. The food in the bag is polluted to varying degrees. The PET film and PP film used in large quantities are difficult to degrade naturally in nature, causing serious pollution to soil and water sources. Direct burning will cause air pollution and destroy the ecological balance of nature.
[0003] People began to try to use some degradable environmental protection film materials as packaging environmental protection film materials or protective environmental protection film materials, such as using PLA (polylactic acid), which is made from plants. However, PLA itself has poor mechanical properties and often PLA cannot be used directly to package food or as a protective film for electronic products, resulting in certain restrictions on the application of PLA

Method used

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  • Degradable environment-friendly membrane material as well as preparation method and production system thereof
  • Degradable environment-friendly membrane material as well as preparation method and production system thereof
  • Degradable environment-friendly membrane material as well as preparation method and production system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the preparation of degradable environmental protection film material

[0052] A kind of degradable environment-friendly film material, comprises PLA layer, biological hydrogel layer and PLA layer successively; In biological hydrogel layer, by weight, comprises nanoclay sheet 2 parts, bacterial cellulose 6 parts and 1 part of carbon nanotubes, wherein nanoclay sheets and bacterial cellulose form a shell-like layered structure.

[0053] Nano-clay is prepared with sepiolite and attapulgite as the main components. It has good dispersion, suspension, adsorption, rheology and reinforcement properties, and has extremely strong ion exchange properties.

[0054] Bacterial cellulose refers to the general term for cellulose synthesized by certain microorganisms in the genus Acetobacter, Agrobacterium, Rhizobium and Sarcina under different conditions.

[0055] Carbon nanotubes, also known as bucky tubes, are one-dimensional quantum materials with a special structure ...

Embodiment 2

[0071] Embodiment 2: the preparation of degradable environmental protection film material

[0072] A kind of degradable environment-friendly film material, comprises PLA layer, biological hydrogel layer and PLA layer successively; In biological hydrogel layer, by weight, comprises nanoclay sheet 10 parts, bacterial cellulose 2 parts and carbon 0.1 parts of nanotubes, wherein nanoclay sheets and bacterial cellulose form a layered structure imitating shells.

[0073] The preparation process of the biohydrogel layer is the same as that of Example 1, and will not be repeated here.

[0074] The thickness of the PLA layer is 0.01mm; the thickness of the environmental film material is 0.03mm.

[0075] The preparation method of the above-mentioned degradable environmental protection membrane material comprises the following steps:

[0076] S1: Coating, coating the bio-hydrogel on the PLA film, the coating amount of the bio-hydrogel is 0.3g / cm2, when coating the above-mentioned bio-h...

Embodiment 3

[0079] Embodiment 3: the preparation of degradable environmental protection film material

[0080] A kind of degradable environment-friendly film material, comprises PLA layer, biological hydrogel layer and PLA layer successively; In biological hydrogel layer, by weight, comprises nanoclay sheet 6 parts, bacterial cellulose 4 parts and carbon 0.5 parts of nanotubes, wherein the nanoclay sheet and bacterial cellulose form a shell-like layered structure.

[0081] The preparation process of the biohydrogel layer is the same as that of Example 1, and will not be repeated here.

[0082] The thickness of the PLA layer is 0.01mm; the thickness of the environmental film material is 0.03mm.

[0083] The preparation method of the above-mentioned degradable environmental protection membrane material comprises the following steps:

[0084] S1: Coating, coating the bio-hydrogel on the PLA film, the coating amount of the bio-hydrogel is 0.5g / cm2, when coating the above-mentioned bio-hydro...

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Abstract

The invention relates to a degradable environment-friendly membrane material as well as a preparation method and a production system thereof. The environment-friendly membrane material sequentially comprises a PLA layer, a biological hydrogel layer and a PLA layer. The preparation method of the environment-friendly membrane material comprises the following steps: coating a PLA film with hydrogel;then conducting baking, wherein a baking process sequentially comprises seven temperature sections, the seven temperature sections are sequentially 80 + / -5 DEG C, 90 + / -5 DEG C, 110 + / -5 DEG C, 120 + / -5 DEG C, 100 + / -5 DEG C, 90 + / -5 DEG C and 60 + / -5 DEG C, and the retention time of the PLA film in each temperature section is 5-10 seconds, so the PLA film containing the biological hydrogel layeris prepared; and attaching a layer of the PLA film onto the surface of a glue layer of the PLA film containing the biological hydrogel layer, and conducting pressing to prepare the environment-friendly membrane material. The environment-friendly membrane material is degradable, the optical, thermal and mechanical properties of the environment-friendly membrane material are superior to the optical,thermal and mechanical properties of commercial plastic, and the environment-friendly membrane material can replace traditional PET films and PP films to be applied to food packaging or electronic product protection.

Description

technical field [0001] The invention relates to the technical field of environment-friendly materials, in particular to a degradable environment-friendly membrane material, a preparation method and a production system thereof. Background technique [0002] Packaging environmental protection film materials or protection environmental protection film materials are widely used in daily life. For example, in daily life, the packaging environmental protection film is used in food packaging and flower packaging, and the protection and environmental protection film is widely used in electronic products, such as the protective film of mobile phones. Traditionally, PET (polyethylene terephthalate) film and PP (polypropylene) film with good mechanical properties are used as packaging environmental protection film materials or protection environmental protection film materials. However, with the improvement of people's living standards, in order to pursue Convenience, the extensive us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/08B32B7/12B32B37/24B32B38/16B32B38/00B32B37/10B65D65/40C09D101/02C09D7/61
CPCB32B7/12B32B27/08B32B27/36B32B37/10B32B37/24B32B38/0008B32B38/164B32B2037/243B32B2255/10B32B2307/308B32B2307/558B32B2307/582B32B2307/716B32B2307/746B32B2553/00B65D65/40C09D101/02C09D7/61C08K7/00C08K3/346C08K3/041Y02W90/10Y02A40/90
Inventor 高淼
Owner 深圳市鼎通新材料科技有限公司
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