Halogen free flame-retardant polyester film and preparation method thereof

A flame-retardant polyester and film technology, applied in the field of polyester film, can solve the problems of lower melting point, poor compatibility, and lower crystallization performance, and achieve the effects of improving droplet resistance, flame retardancy, and crystallization performance

Active Publication Date: 2014-03-26
JIANGSU YUXING FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, flame retardant polyester film can achieve flame retardancy by adding additive flame retardants, but additive flame retardants have poor compatibility with the polymer matrix, severe deterioration of mechanical properties, and unsatisfactory flame retardant durability, which are difficult to overcome. Although the reactive flame retardant overcomes the above-mentioned shortcomings of the additive flame retardant, the symmetrical structure of the flame retardant polyester is severely damaged due to the introduction of a large side group, resulting in a decrease in the molecular weight. Larger, resulting in lower crystallization performance, lower melting point, and obvious changes in thermal transition performance, which cannot meet the requirements of high transparent polyester film.

Method used

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  • Halogen free flame-retardant polyester film and preparation method thereof
  • Halogen free flame-retardant polyester film and preparation method thereof
  • Halogen free flame-retardant polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The 100Kg phosphorus content is 0.8% by mass percentage, and the intrinsic viscosity is 0.69dL g -1 After the phosphorus-containing polyester chips are dried, mix 1Kg of silicon dioxide with a particle size of 80nm, add 0.5Kg of sodium benzoate, mix well and send it into the extruder to melt at 260-295°C, pass through a melt tube, coarse filter Thick sheets are extruded from the device, fine filter and die head, the thick sheets are peeled off by the peeling roller, enter the infrared heating zone, and are heated in the infrared heater at 60-80°C, and the temperature is 0.2m / s-0.8m / s Line speed, longitudinal stretching ratio of 3.0-3.5:1 is stretched longitudinally to form a film, and then transverse stretching is carried out at 110-130°C with a transverse stretching ratio of 3.0-3.5:1, and the diaphragm is stretched at 200 Heat and shape at ~230°C, and finally wind up to obtain a halogen-free flame-retardant polyester film.

Embodiment 2

[0033] 100Kg phosphorus content 1.0wt%, intrinsic viscosity 0.66dL g -1 After the phosphorus-containing flame-retardant polyester slices are dried, mix 0.5Kg of barium sulfate with a particle size of 50nm, 1kg of poly(ethylene-co-acrylic acid) zinc salt and 5Kg of polyethylene oxide or methyl acrylate, and mix thoroughly Feed into the extruder to melt at 270-295°C, extrude thick sheets through the melt pipe, coarse filter, fine filter and die head, peel off the thick sheet by the peeling roller, enter the infrared heating zone, and heat at 60-80°C Heated in the infrared heater, and stretched longitudinally at a linear speed of 0.5m / s to 1.1m / s and a longitudinal stretch ratio of 3.5 to 4.0:1 to form a film, and then at 100 to 120°C with a temperature of 3.0 ~4.0:1 transverse stretching ratio is carried out, the film is heated and shaped between 200-230 ℃, the surface of the film is subjected to high-voltage corona treatment, and finally the halogen-free flame-retardant polymer...

Embodiment 3

[0035] 100Kg phosphorus content 1.2wt%, intrinsic viscosity 0.63dL g -1After the phosphorus-containing flame-retardant polyester chips are dried, mix 0.05Kg of silicon dioxide with a particle size of 10nm, 0.05Kg of barium sulfate with a particle size of 10nm, 1.5kg of sodium benzoate, and 3Kg of tetraalkyl quaternary ammonium salts or alkyl Benzene sulfonate, mixed well, fed into the extruder and melted at 280-295°C, extruded into thick slices through melt pipe, coarse filter, fine filter and die head, peeled off by peeling roller, and entered infrared The heating zone is heated in an infrared heater at 70-80°C, and stretched longitudinally at a line speed of 0.5m / s-0.8m / s and a longitudinal stretch ratio of 4.0-5.0:1 to form a film. Then stretch transversely at 100-110°C with a transverse stretching ratio of 3.0-4.0:1, heat and shape the film at 200-230°C, and finally wind it up to obtain a halogen-free flame-retardant polyester film.

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Abstract

The invention relates to a halogen free flame-retardant polyester film, which comprises the following components in parts by mass: 100 parts of phosphorus-containing polyester slices, 0.1-1 part of inorganic nano particles, 0.5-1.5 parts of a crystallization nucleating agent and 0-5 parts of an antistat. The components are mixed, conveyed to an extruder for fusing and extrusion, bidirectionally stretched, loosened, shaped, subjected to corona treatment and finally rolled. According to the halogen free flame-retardant polyester film, the molecular structure is regular, and the polyester film has high crystallinity, a high fusing point, excellent flame-retardant performance and good comprehensive performance.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polyester film and a preparation method thereof, belonging to the technical field of polyester films. Background technique [0002] Biaxially oriented polyester film is widely used in electronics, electrical insulation, solar photovoltaic and other industrial fields due to its excellent physical properties and electrical insulation properties. With the continuous strengthening of people's awareness of safety, especially higher requirements for flame retardancy, it is necessary to endow biaxially oriented polyester films with higher levels of flame retardancy through appropriate methods, and improve people's production and living standards. important meaning. At the same time, flame-retardant polyester film can completely replace polycarbonate film, greatly reducing production costs. [0003] At present, flame retardant polyester film can be flame retardant by adding additive flame retardant, but...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K3/36C08K3/30C08K5/098C08G63/692
Inventor 张兴宏闵玉勤王继伟蒙钊杜滨阳徐君庭徐莹磊夏毅车耀
Owner JIANGSU YUXING FILM TECH
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