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

A kind of membrane material, environmental protection technology, applied in applications, other household appliances, chemical instruments and methods, etc., can solve the problems of low impact strength, damage to the ecological balance of nature, poor mechanical properties, etc., achieve high tensile strength, improve Good use value and mechanical properties

Active Publication Date: 2021-02-26
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 film or protective film. However, with the improvement of people's living standards, in order to pursue convenience, The extensive use of non-naturally degradable PET films and PP films has further led to serious health and environmental problems, because these films themselves will release harmful gases, which will accumulate in sealed bags for a long time, and the concentration will increase with the increase of sealing time, resulting in food in the bags Due to different degrees of pollution, PET film and PP film used in large quantities are difficult to degrade naturally in nature, causing serious pollution to soil and water sources, and direct incineration will cause air pollution and destroy the ecological balance of nature
[0003] People began to try to use some degradable film materials as packaging film materials or protective film materials. However, the polylactic acid fiber itself has disadvantages such as poor toughness and low impact strength, which seriously hinders the further expansion of the application range of polylactic acid fiber.
The prior art used to add some inorganic powder materials in order to increase the toughness and strength of PLA, but it brought about the problem of poor dispersion caused by the easy agglomeration of the powder, and the gap between the inorganic powder and the PLA matrix material belonging to organic matter. The problem of extremely poor compatibility
The inherent defect of PLA, which has poor mechanical properties, often cannot directly use PLA 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 application thereof
  • Degradable environment-friendly membrane material as well as preparation method and application thereof
  • Degradable environment-friendly membrane material as well as preparation method and application thereof

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preparation example Construction

[0050] Another aspect of the present invention provides the preparation method of above-mentioned degradable film material, comprises the following steps:

[0051] (1) Coating: get the PLA film, coat the above-mentioned glue on the PLA film, and set aside;

[0052] (2) Baking: Baking the PLA film treated in step (1), the baking process goes through 7 temperature sections in turn, and the 7 temperature sections are 80±5°C, 90±5°C, 110±5°C 5°C, 120±5°C, 100±5°C, 90±5°C, 60±5°C, the time for the PLA film to stay in each temperature range is 5-10 seconds, and the PLA film containing the glue layer is prepared;

[0053] (3) Pressing: attaching a layer of PLA film to the surface of the glue layer of the PLA film containing the glue layer prepared in step (2), and then pressing to obtain the degradable film material.

[0054] Wherein, the coating amount of glue in step (1) is 0.1g-15g / cm 2 , the preferred coating amount is 0.5g-10g / cm 2 . In step (1), when coating the above glue ...

Embodiment 1

[0073] Embodiment 1: the preparation of degradable environmental protection membrane material

[0074] A degradable environmental-friendly film material, which contains PLA layer, glue layer and PLA layer in sequence; the glue layer includes 24 parts by weight of toluene, 27 parts of ethyl acetate, 46 parts of acrylic resin, and 0.1 parts of carbon nanotubes. share.

[0075] The preparation method of the glue is as follows: the components toluene, ethyl acetate, acrylic resin, and carbon nanotubes are mixed, and then filtered twice under a pressure of 2 kg. Get glue.

[0076] The thickness of the PLA layer is 0.01mm; the thickness of the film material is 0.04mm.

[0077] The preparation method of the above-mentioned degradable environmental protection membrane material comprises the following steps:

[0078] (1) Coating: take the PLA film, and coat the above glue on the PLA film, the coating amount of the glue is 0.2g / cm 2 , when the above-mentioned glue is coated on the P...

Embodiment 2

[0081] Embodiment 2: the preparation of degradable environmental protection film material

[0082] A degradable environmental-friendly film material, which contains PLA layer, glue layer and PLA layer in sequence; the glue layer includes 25 parts by weight of toluene, 27 parts of ethyl acetate, 45 parts of acrylic resin, and 0.4 parts of carbon nanotubes. share.

[0083] The preparation method of the glue is: mix the components of toluene, ethyl acetate, acrylic resin, and carbon nanotubes, and then filter 3 times under a pressure of 3.0 kg. Prepare the glue.

[0084] The thickness of the PLA layer is 0.01mm, and the thickness of the film material is 0.03mm.

[0085] combined reference figure 1 , the preparation method of the above-mentioned degradable environmental protection film material, comprising the following steps:

[0086] (1) Coating: take the PLA film, and coat the above glue on the PLA film, and the coating amount of the glue is 0.3g / cm 2 , when the above-ment...

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Abstract

The invention discloses a degradable environment-friendly membrane material as well as a preparation method and application thereof. The membrane material sequentially comprises a first PLA layer, a glue layer and a second PLA layer, and the glue layer at least comprises the following components: toluene, ethyl acetate, acrylic resin and carbon nanotubes. The preparation method of the membrane material comprises the following steps: coating the first PLA film layer with glue; then sequentially conducting baking at seven temperature sections to prepare a PLA film containing a glue layer; and attaching a second PLA film layer to the surface of the PLA film containing the glue layer, and conducting pressing to obtain the membrane material. Through combined use of the glue and the PLA film anda specific preparation method, the prepared membrane material is degradable and good in mechanical property, and can replace traditional PET films and PP films to be applied to food packaging or electronic product protection.

Description

technical field [0001] The invention belongs to the technical field of environmental protection materials, and in particular relates to a degradable environmental protection film material, a preparation method and an application thereof. Background technique [0002] Packaging film or protective film is widely used in daily life. For example, packaging film is used in food packaging and flower packaging in daily life, and protective 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 film or protective film. However, with the improvement of people's living standards, in order to pursue convenience, The extensive use of non-naturally degradable PET films and PP films has further led to serious health and environmental problems, because these films themselves will release harmful gases, which will accumula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/06B32B27/18B32B7/12B32B37/06B32B37/10B32B37/12B32B38/00C09J133/12C09J11/04B65D65/40B65D65/46
CPCB32B27/36B32B27/08B32B27/18B32B7/12B32B37/06B32B37/10B32B37/1284B32B38/0008C09J133/12C09J11/04B65D65/40B65D65/466B32B2307/50B32B2307/716B32B2553/00C08K9/08C08K9/04C08K9/02C08K3/041Y02W90/10Y02A40/90
Inventor 高淼
Owner 深圳市鼎通新材料科技有限公司
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