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A kind of solvent-free composite pet film and preparation technology thereof

A solvent-free and thin-film technology, which is applied in the field of solvent-free composite PET film and its preparation process, can solve the problems of slow production speed, unstable film performance, and high cost, so as to improve product quality, easy operation, and reduce production costs Effect

Active Publication Date: 2018-08-14
中山市泓溢薄膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent adopts dry compounding, and the binder used in the production process is diluted with a large amount of solvent, which requires a long time to dry, causing the disadvantages of unstable film performance, slow production speed, and increased cost.

Method used

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  • A kind of solvent-free composite pet film and preparation technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A solvent-free composite PET film composed of an outer film, a middle film and an inner film; wherein the raw materials and weight parts for preparing the outer film are: 90 parts of PET resin, 1 part of metal aluminum fiber, and gum arabic 2 parts; the raw materials and weight parts for preparing the middle layer film are: 100 parts of PET resin, 0.5 parts of graphite, 1 part of carbon nanotubes; raw materials and weight parts for preparing the inner layer film: 70 parts of PET resin, 1 part of zinc oxide , 2 parts of epoxy soybean oil.

[0027] Among them, the molecular weight of PET resin is 15000, and the melt index measured according to GB-T3682 at 190°C and 21.6Kg is 300g / 10min; the average diameter of metal aluminum fiber is 0.5μm; the average diameter of carbon nanotube is 20nm.

Embodiment 2

[0029] A solvent-free composite PET film composed of an outer film, a middle film and an inner film; wherein the raw materials and weight parts for preparing the outer film are: 120 parts of PET resin, 3 parts of metal aluminum fiber, and gum arabic 6 parts; the raw materials and weight parts for preparing the middle layer film are: 120 parts of PET resin, 2 parts zinc stearate, and 3 parts of carbon nanotubes; the raw materials and weight parts for preparing the inner layer film are: 90 parts of PET resin, oxidation 3 parts zinc, 4 parts epoxy soybean oil.

[0030] Among them, the molecular weight of PET resin is 30,000, and the melt index measured according to GB-T3682 at 190°C and 21.6Kg is 600g / 10min; the average diameter of metal aluminum fiber is 5μm; the average diameter of carbon nanotube is 100nm.

Embodiment 3

[0032] A solvent-free composite PET film composed of an outer film, a middle film and an inner film; wherein the raw materials and weight parts for preparing the outer film are: 105 parts of PET resin, 2 parts of metal aluminum fiber, and gum arabic 4 parts; the raw materials and weight parts for preparing the middle layer film are: 110 parts of PET resin, 1.2 parts of titanium dioxide, and 2 parts of carbon nanotubes; the raw materials and weight parts for preparing the inner layer film are: 80 parts of PET resin and 2 parts of zinc oxide , 3 parts of epoxidized soybean oil.

[0033] Among them, the molecular weight of PET resin is 23000, the melt index measured according to GB-T3682 at 190°C and 21.6Kg is 450g / 10min; the average diameter of metal aluminum fiber is 2.8μm; the average diameter of carbon nanotube is 60nm.

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Abstract

The invention discloses a solvent-free composite PET film and a preparation technology thereof. The film is formed by compounding an outer layer film, a middle layer film and an inner layer film, wherein the outer layer film is prepared from PET resin, metallic aluminum fibers and Arabic gum; the middle layer film is prepared from PET resin, an crystal nucleus accelerating agent and carbon nano tubes; the inner layer film is prepared from PET resin, zinc oxide and epoxidized soybean oil. The preparation technology comprises the steps that the outer layer film is coated with an adhesion agent A, the middle layer film is subjected to hot-press so as to be bonded on the outer layer film, then a compound semi-finished product is solidified, and a primary compound film is obtained; the inner layer film is coated with an adhesion agent B, the primary compound film is pressed on the inner layer film, a compound product is obtained and subjected to light solidification and then heat solidification, and the solvent-free composite PET film is obtained. The matched solvent-free adhesion agents are adopted to prepare the solvent-free composite PET film, and the composite PET film is high in peel strength and high in product quality.

Description

Technical field [0001] The invention relates to the field of layered products, in particular to a solvent-free composite PET film and a preparation process thereof. Background technique [0002] Solvent-free compounding is similar to dry compounding and hot-melt adhesive compounding. They both use adhesives to bond film-like substrates to make composite films. However, hot-melt adhesive compounding has poor heat resistance due to the lack of chemical reaction of the adhesive during the compounding process. The bonding strength is low, so there are not many applications. In dry compounding, the binder is diluted with a large amount of ethyl acetate, which requires a long time to dry, which causes the film performance to be unstable, the product production speed is slow, and the cost is increased. The solvent-free composite uses a solvent-free adhesive, and there is a curing process of the adhesive during the production process. During the curing process, the adhesive produces a ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36B32B27/18B32B37/06B32B37/10B32B37/12C08L67/02C08L5/00C08K7/06C08K7/24C08L91/00C08K3/22
CPCB32B27/18B32B27/36B32B37/06B32B37/10B32B37/12C08K2201/011C08L67/02C08L5/00C08K7/06C08L91/00C08K2003/2296
Inventor 陈海燕何秀娟
Owner 中山市泓溢薄膜科技有限公司