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Antistatic polyester film and preparation method thereof

A polyester film, antistatic technology, applied in the field of film materials, can solve the problems of unstable antistatic performance, easy peeling off and easy accumulation of antistatic layer, and achieve excellent optical properties and mechanical properties, excellent resistance to humidity and heat aging performance. , the effect of lasting antistatic properties

Inactive Publication Date: 2012-03-14
HEFEI LUCKY SCI & TECH IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyester film is widely used in the packaging of electronic products and the However, because of its compact structure and high crystallinity, it is easy to accumulate static charges and generate static electricity, causing major accidents such as vacuuming, electric shocks and even explosions. It's very important to cause damage
[0004] Usually, the antistatic properties of polyester films are mostly coated with antistatic layers on polyester films, but this method of coating has the following disadvantages: (1) the process is complicated and the production cost increases; (2) the antistatic properties are not good. Stable, because the antistatic layer is adhered to the surface of ordinary polyester film through adhesives, the antistatic layer is easy to fall off and peel off in some specific environments, and cannot play the role of antistatic; (3) It is prone to quality problems, Affected by the coating conditions, the surface of the film after direct coating is prone to unevenness, streaks, and blooming.

Method used

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  • Antistatic polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The pure polyester chips are dried and crystallized and sent to the single-screw extruder for melting, and at the same time, the polyester chips mixed with organic antistatic agents and inorganic nano-antistatic mixed antistatic agents are sent to the twin-screw extruder Melting, where the weight ratio of organic antistatic agent (polyoxyethylene ether) to inorganic nano antistatic agent (50nm, nano alumina) is 20:1, the melt is sent to the three-layer die through the melting pipeline and melted at 250 ° C Extrusion, wherein the polyester layer containing antistatic agent is located on both surfaces of the film body; the above melt is cast onto a rotating cooling drum to obtain an amorphous thick sheet with a thickness of about 1500 μm; the thick sheet is subjected to infrared pretreatment Heat it up to 100°C, then carry out longitudinal stretching with a longitudinal stretching ratio of 3.0:1, send the stretched film to a transverse tenter, and stretch it at a ratio of ...

Embodiment 2

[0032] The pure polyester chips are dried and crystallized and sent to the single-screw extruder for melting, and at the same time, the polyester chips mixed with organic antistatic agents and inorganic nano-antistatic mixed antistatic agents are sent to the twin-screw extruder Melting, wherein the weight ratio of organic antistatic agent (polyamide) to inorganic nano antistatic agent (10nm silicon carbide, 60nm indium tin oxide) is 40:1, and the melt is sent to the two-layer die through the melting pipeline. Melt extrusion at 240°C, wherein the polyester layer containing an antistatic agent is located on one surface of the film body; the above melt is cast onto a rotating cooling drum to obtain an amorphous thick sheet with a thickness of about 2000 μm; the thick sheet is passed through Infrared preheating to 100°C, followed by longitudinal stretching with a longitudinal stretch ratio of 3.6:1, and the longitudinally stretched film is sent to a transverse tenter, and stretched...

Embodiment 3

[0034] The pure polyester chips are dried and crystallized and sent to the single-screw extruder for melting, and at the same time, the polyester chips mixed with organic antistatic agents and inorganic nano-antistatic mixed antistatic agents are sent to the twin-screw extruder Melting, in which the weight ratio of organic antistatic agent (polyoxyethylene ether) to inorganic nano antistatic agent (80nm silicon carbide) is 50:1, the melt is sent to the three-layer die through the melting pipeline and melted and extruded at 300 °C Among them, the polyester layer containing the antistatic agent is located on both surfaces of the film body; the above melt is cast together on the rotating cooling drum to obtain an amorphous thick sheet with a thickness of about 2500 μm; the thick sheet is subjected to infrared pretreatment Heat it to 100°C, then carry out longitudinal stretching with a longitudinal stretching ratio of 3.7:1, send the stretched film to a transverse tenter, and stret...

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Abstract

The invention relates to an antistatic polyester film and a preparation method thereof. The antistatic polyester film comprises a polyester film body and at least one polyester layer, wherein the polyester layer contains an organic antistatic agent and an inorganic nanometer antistatic agent; a weight ratio of the organic antistatic agent to the inorganic nanometer antistatic agent in the polyester layer is (20:1)-(100:1); and two-way stretching is carried out, thereby acquiring the antistatic polyester film. The antistatic polyester film provided by the invention has stable and lasting antistatic property as well as excellent damp, heat and ageing resisting properties, maintains excellent optical property and mechanical property, is suitable for the assembling of electronic products, and is especially suitable for the production of a film of a backlight module set of a flat-panel display, such as increment film, diffusion film, anti-scratching film, and the like.

Description

technical field [0001] The invention relates to a film material, in particular to an antistatic polyester film and a preparation method thereof. Background technique [0002] In industrial production and daily life, static electricity is everywhere, such as dust in industrial production, use of electrical products, static electricity on display screens, etc. The existence of static electricity not only affects the quality of industrial products, but also endangers the health of the human body, so people want to avoid the generation of static electricity in these occasions, so as to avoid the harm caused by static electricity to production and human beings. [0003] Polyester film is widely used in the packaging of electronic products and the However, because of its compact structure and high crystallinity, it is easy to accumulate static charges and generate static electricity, causing major accidents such as vacuuming, electric shocks and even explosions. Causing havoc i...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/18B29C49/04
Inventor 韩志强高青薛静霍新莉
Owner HEFEI LUCKY SCI & TECH IND