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On-line coated three-layer co-extruded BOPET film with high temperature resistance and low precipitation

A technology of three-layer co-extrusion and high temperature-resistant layer, which is applied in the direction of coating, fireproof coating, etc., can solve the problems of general wear resistance, reduced performance of BOPET film, and reduced service life, so as to achieve good temperature resistance and good durability. Heat resistance, effect of increasing wear resistance

Inactive Publication Date: 2021-02-09
GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing BOPET film has poor high temperature resistance effect. During use, the equipment will heat up for a long time, which will reduce the performance of the BOPET film and affect the use. Moreover, its own wear resistance is average, and it will wear out after long-term use, making the service life reduce

Method used

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  • On-line coated three-layer co-extruded BOPET film with high temperature resistance and low precipitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A three-layer co-extruded BOPET film with high temperature resistance and low precipitation coated on-line, including a PET base layer and a high temperature-resistant layer coated on both sides of the PET base layer on-line; the high temperature-resistant layer is made of a high-temperature-resistant coating , the high temperature-resistant coating is made by the following steps:

[0031]Step A1: Add dimethyldiethoxysilane, phenyltriethoxysilane, and xylene into the reaction kettle, stir for 10 minutes at a rotation speed of 150r / min and a temperature of 60°C, and then add dropwise Aqueous hydrochloric acid solution, the dropwise addition time is 0.5h, after the dropwise addition is completed, the temperature is raised to 75°C, and after stirring for 3h, sodium bicarbonate is added, and the stirring is continued until the pH value is 7, and the temperature is 140°C Next, carry out distillation to remove the distillate, and obtain the silicone resin;

[0032] Step A2: ...

Embodiment 2

[0044] A three-layer co-extruded BOPET film with high temperature resistance and low precipitation coated on-line, including a PET base layer and a high temperature-resistant layer coated on both sides of the PET base layer on-line; the high temperature-resistant layer is made of a high-temperature-resistant coating , the high temperature-resistant coating is made by the following steps:

[0045] Step A1: Add dimethyldiethoxysilane, phenyltriethoxysilane, and xylene into the reaction kettle, stir for 10 minutes at a rotation speed of 150r / min, and a temperature of 70°C, then add dropwise Aqueous hydrochloric acid solution, the time for dropwise addition is 1h. After the dropwise addition, the temperature is raised to 75°C, and after stirring for 5h, sodium bicarbonate is added, and the stirring is continued until the pH value is 7. Under the condition of 140°C, , carrying out distillation to remove the distillate to obtain a silicone resin;

[0046] Step A2: Add the silicone ...

Embodiment 3

[0058] A three-layer co-extruded BOPET film with high temperature resistance and low precipitation coated on-line, including a PET base layer and a high temperature-resistant layer coated on both sides of the PET base layer on-line; the high temperature-resistant layer is made of a high-temperature-resistant coating , the high temperature-resistant coating is made by the following steps:

[0059] Step A1: Add dimethyldiethoxysilane, phenyltriethoxysilane, and xylene into the reaction kettle, stir for 15 minutes at a rotation speed of 200r / min, and a temperature of 70°C, then add dropwise Hydrochloric acid aqueous solution, the dropwise addition time is 1h, after the dropwise addition is completed, the temperature is raised to 80°C, and after stirring for 5h, sodium bicarbonate is added, and the stirring is continued until the pH value is 7, and the temperature is 150°C , carrying out distillation to remove the distillate to obtain a silicone resin;

[0060] Step A2: Add the s...

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Abstract

The invention discloses an on-line coated three-layer co-extruded BOPET film with high temperature resistance and low precipitation. The BOPET film comprises a PET base layer and layers having high temperature resistance and coating the surfaces of the two sides of the PET base layer on line, wherein the layers with high temperature resistance are made of paint with high temperature resistance; the paint with high temperature resistance uses organic silicon resin molecules and bisphenol A epoxy resin as raw materials, and organic silicon resin and epoxy resin both have good heat resistance; and a wear-resistant filler and a migration-resistant plasticizer are prepared at the same time, the wear-resistant filler coats the surface of graphene with nano-silica to improve the wear resistance of the BOPET film, and the migration-resistant plasticizer is prepared from isobutyraldehyde by conducting an aldol condensation reaction at first and a Tishchenko reaction next to obtain 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and subjecting 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and isocaprylic acid to an esterification reaction, so the service life of the BOPET film is prolonged.

Description

technical field [0001] The invention belongs to the technical field of polyester film preparation, and in particular relates to an on-line coated high-temperature-resistant and low-precipitation three-layer co-extruded BOPET film. Background technique [0002] Biaxially oriented polyester film (BOPET) has excellent comprehensive properties, such as high mechanical strength, good optical properties, wide service temperature, excellent barrier properties, oil resistance, corrosion resistance, etc., so its application fields are very wide. The application of BOPET film in printing, compounding, vacuum aluminum plating, etc. is the most common; PET resin is a polar polymer material; generally speaking, the printing, compounding, vacuum aluminum plating, etc. Surface properties have been able to meet the process requirements. [0003] The existing BOPET film has poor high temperature resistance effect. During use, the equipment will heat up for a long time, which will reduce the...

Claims

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Application Information

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IPC IPC(8): C08J7/04C09D183/10C09D5/00C09D7/62C09D7/63C08G77/42C08L67/02
CPCC08J7/04C09D5/18C09D183/10C09D7/62C09D7/63C08G77/42C08J2367/02C08J2483/10C08K9/10C08K9/04C08K9/02C08K3/04C08K5/103
Inventor 李博伦许少翔邓坤广张胜乾蔡锦恩
Owner GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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