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Solvent resistant polyester film and preparation method thereof

A polyester film and solvent-resistant technology, applied in the field of polyester film, can solve the problems of polyester film's poor solvent resistance, affecting the application range, softening and weight gain of the surface layer, etc., to save costs and resources, low price, The effect of improving overall performance

Inactive Publication Date: 2018-07-20
SUZHOU WILLOCK ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvent resistance of polyester film is not very good, and it is easy to change its performance under the action of organic solvents such as alcohol, such as surface softening, weight gain, etc., which affects its application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The invention provides a kind of solvent-resistant polyester film, and the composition of film is as follows:

[0022] 72 parts by mass of polyethylene terephthalate, 5 parts by mass of antioxidant 1010, 5 parts by mass of toughening agent (ethylene-vinyl acetate copolymer), and 18 parts by mass of water-soluble acrylate-styrene-acrylic acid copolymer.

[0023] The polyester film is prepared according to the following method: weigh the raw materials and mix them evenly, heat and dry; after drying, extrude through the melt extrusion equipment, cool, and the cooling rate is controlled at 65°C / min; after cooling, carry out longitudinal stretching, stretching The stretching temperature is 85°C; the stretching temperature is 120°C for transverse stretching, and the polyester film is finally shaped. The thickness of the polyester film was 120 μm.

[0024] Among them, the glass transition temperature (Tg) of the water-soluble acrylate-styrene-acrylic acid copolymer is 7°C, an...

Embodiment 2

[0026] The invention provides a kind of solvent-resistant polyester film, and the composition of film is as follows:

[0027] 84 parts by mass of polyethylene terephthalate, 1 part by mass of antioxidant 1076, 1 part by mass of toughening agent (ethylene-vinyl acetate copolymer), 14 parts by mass of water-soluble acrylate-styrene-acrylic acid copolymer.

[0028] The polyester film is prepared according to the following method: weigh the raw materials and mix them evenly, heat and dry; after drying, extrude through the melt extrusion equipment, cool, and the cooling rate is controlled at 75°C / min; after cooling, carry out longitudinal stretching, stretching Stretching temperature is 100°C; transverse stretching, stretching temperature is 135°C, and finally shaped to obtain a polyester film, the thickness of the polyester film is 100 μm.

[0029] Among them, the glass transition temperature (Tg) of the water-soluble acrylate-styrene-acrylic acid copolymer is 15°C, and it is comp...

Embodiment 3

[0031] The invention provides a kind of solvent-resistant polyester film, and the composition of film is as follows:

[0032] 74 parts by mass of polyethylene terephthalate, 1.5 parts by mass of antioxidant 1076, 0.5 parts by mass of antioxidant 168, 3 parts by mass of toughening agent (ethylene-vinyl acetate copolymer), water-soluble acrylate-styrene-acrylic acid 21 parts by mass of copolymer.

[0033] The polyester film is prepared according to the following method: weigh the raw materials and mix them evenly, heat and dry; after drying, extrude through the melt extrusion equipment, cool, and the cooling rate is controlled at 60°C / min; after cooling, carry out longitudinal stretching, stretching The stretching temperature is 95°C; the stretching temperature is 130°C for transverse stretching, and finally the polyester film is shaped. The thickness of the polyester film was 110 μm.

[0034]Among them, the glass transition temperature (Tg) of the water-soluble acrylate-styre...

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Abstract

The invention relates to a solvent resistant polyester film and a preparation method thereof. The solvent resistant polyester film is characterized by comprising the following components in parts by weight: 72 to 84 parts of polyethylene terephthalate, 1 to 5 parts of a flexibilizer, 1 to 5 parts of an antioxidant and 14 to 21 parts of a water-soluble acrylate-styrene-acrylic copolymer, wherein the water-soluble acrylate-styrene-acrylic copolymer is formed through polymerization of methyl acrylate, acrylic acid-2-hydroxyethyl, acrylic acid glycerol trilaurate, styrene and methacrylic acid. Thecontent of acrylic acid glycerol trilaurate added into the polyester film provided by the invention is relatively high, the water-soluble acrylate-styrene-acrylic copolymer is high in compatibility with the polyester material, and the acrylic acid glycerol trilaurate is relatively high in solvent resistance, so that the solvent resistance of the polyester film is improved, and the whole performance of the polyester film is improved. Moreover, the water-soluble acrylate-styrene-acrylic copolymer is high in transparency and relatively low in cost, the addition technology is simple, non-toxic and environmentally-friendly, and the cost and resources are reduced.

Description

technical field [0001] The invention relates to the field of polyester films, in particular to a solvent-resistant polyester film and a preparation method thereof. Background technique [0002] Polyester film (PET) uses polyethylene terephthalate as the main raw material. It is a kind of film with excellent electrical insulation performance, weather resistance, weak acid resistance and oil resistance. It is also non-toxic and stable against chemicals. It is a material with good performance, low water absorption, light weight and easy processing. Polyester film is used as various food, medicine, non-toxic and sterile packaging materials because of its many advantages; high-grade packaging materials for textiles, precision instruments, electrical components; also used in electrical insulation materials, capacitor films, flexible printed circuit boards and membrane switches and other electronic and mechanical fields. The solvent resistance of polyester film is not very good, ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L33/14C08L23/08C08K7/14C08K5/134C08K5/526C08J5/18C08F220/18C08F220/14C08F220/20C08F212/08C08F220/06
CPCC08F220/18C08F220/1812C08J5/18C08J2367/02C08J2423/08C08J2433/14C08K5/1345C08K5/526C08K7/14C08F220/14C08F220/20C08F212/08C08F220/06
Inventor 何建平
Owner SUZHOU WILLOCK ELECTRONICS TECH CO LTD