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A kind of preparation method of highly conductive polyester film

A polyester film, high conductivity technology, applied in conductive coatings, coatings and other directions, can solve the problems of short duration of conductive performance of conductive films, poor conductivity of conductive polyester films, easy to agglomerate and other problems, saving preparation Steps, lowering temperature, the effect of improving production efficiency

Active Publication Date: 2022-03-15
CHONGQING JIMAT NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing conductive polyester films are generally made of polyester filled with conductive fillers, but because the conductive fillers are prone to agglomeration in the polyester matrix, and too much filling will affect the mechanical properties of the polyester matrix, it is limited. The filling amount of the conductive filler makes the conductive polyester film made of poor conductivity, and when the conductive coating is applied on the surface of the polyester film, the conductive filler attached to the surface of the polyester film is easily mixed with the polyester film during use. The film is detached, so that the conductive performance of the made conductive film lasts for a short time and the service life is short

Method used

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  • A kind of preparation method of highly conductive polyester film
  • A kind of preparation method of highly conductive polyester film
  • A kind of preparation method of highly conductive polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of high conductivity polyester film, it comprises following preparation steps:

[0043] Step 1. Pre-crystallize and dry the conductive polyester masterbatch. The drying temperature is 170°C. Then put the conductive polyester masterbatch into a single-screw extruder for heating, melting and plasticization. The extrusion temperature is 280°C to obtain a polyester thick film;

[0044] Step 2. Stretch the polyester thick film by biaxial stretching method, the longitudinal stretching temperature is 85°C, the transverse stretching temperature is 105°C, the thickness of the stretched polyester film is 0.3mm, and then the temperature is raised The polyester film after stretching is set, and the setting temperature is 235°C;

[0045] Step 3: Spray conductive paint on the surface of the shaped polyester film by spraying process, the temperature of the sprayed polyester film is 100°C, and the spraying thickness is 0.1mm;

[0046] Step 4: Carrying out...

Embodiment 2

[0063] A kind of preparation method of high conductivity polyester film, it comprises following preparation steps:

[0064] Step 1. Pre-crystallize and dry the conductive polyester masterbatch, the drying temperature is 150-190°C, and then put the conductive polyester masterbatch into a single-screw extruder for heating, melting and plasticization. The single-screw extruder The extrusion temperature in the process is 270°C-290°C to obtain thick polyester film;

[0065] Step 2: Stretch the polyester thick film by bidirectional stretching method, the longitudinal stretching temperature is 80-90°C, the transverse stretching temperature is 100-110°C, and the thickness of the stretched polyester film is 0.3 mm, then heat up to shape the stretched polyester film, and the setting temperature is 230-240°C;

[0066] Step 3: Spray conductive paint on the surface of the shaped polyester film by spraying process, the temperature of the sprayed polyester film is 50-150°C, and the spraying...

Embodiment 3

[0083] A kind of preparation method of high conductivity polyester film, it comprises following preparation steps:

[0084] Step 1. Pre-crystallize and dry the conductive polyester masterbatch, the drying temperature is 150-190°C, and then put the conductive polyester masterbatch into a single-screw extruder for heating, melting and plasticization. The single-screw extruder The extrusion temperature in the process is 270°C-290°C to obtain thick polyester film;

[0085] Step 2: Stretch the polyester thick film by bidirectional stretching method, the longitudinal stretching temperature is 80-90°C, the transverse stretching temperature is 100-110°C, and the thickness of the stretched polyester film is 0.3 mm, then heat up to shape the stretched polyester film, and the setting temperature is 230-240°C;

[0086] Step 3: Spray conductive paint on the surface of the shaped polyester film by spraying process, the temperature of the sprayed polyester film is 50-150°C, and the spraying...

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Abstract

The technical field of conductive materials of the present invention specifically relates to a method for preparing a highly conductive polyester film, which includes step 1, pre-crystallizing and drying the conductive polyester masterbatch, and then putting the conductive polyester masterbatch into a single-screw extrusion machine to heat, melt and plasticize, and obtain a thick polyester film; step 2, stretch the thick polyester film by bidirectional stretching, and then raise the temperature to shape the stretched polyester film; step 3, Spraying conductive paint on the surface of the shaped polyester film by using a spraying process; step 4, corona treatment is carried out on the polyester film after spraying the conductive paint to obtain a highly conductive polyester film. The invention has simple preparation steps and high production efficiency, and the prepared polyester film has excellent electrical conductivity, long duration and long service life.

Description

technical field [0001] The invention relates to the technical field of conductive materials, in particular to a preparation method of a high-conductivity polyester film. Background technique [0002] Conductive plastics are functional polymer materials that are processed by mixing resin and conductive substances and processing them in the same way as plastics. Mainly used in electronics, integrated circuit packaging, electromagnetic wave shielding and other fields. It is the most important category of conductive polymer materials. [0003] Existing conductive polyester films are generally made of polyester filled with conductive fillers, but because the conductive fillers are prone to agglomeration in the polyester matrix, and too much filling will affect the mechanical properties of the polyester matrix, it is limited. The filling amount of the conductive filler makes the conductive polyester film made of poor conductivity, and when the conductive coating is applied on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02B29C48/08B29B13/06B29C48/92B29C55/12B29C71/00B29C71/04C08J3/22C08L67/00C08K3/04C08K3/22C08K3/08C09D123/12C09D123/06C09D125/06C09D5/24C09D7/61B29K67/00
CPCB29C48/0018B29C48/08B29B13/065B29C48/92B29C55/12B29C71/0009B29C71/04C08J3/226C09D123/12C09D123/06C09D125/06C09D5/24C09D7/61B29C2948/92704B29K2067/00C08J2467/00C08K3/042C08K3/041C08K3/08C08K2201/011C08K3/22C08K3/04C08K2201/001C08K2003/2241C08K2003/085C08K2003/0806C08K2003/0862C08K2201/014C08L2205/025C08L23/12C08K13/02
Inventor 刘文卿臧世伟
Owner CHONGQING JIMAT NEW MATERIAL TECH CO LTD
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