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Halogen-free flame-retarding polyester thin film and preparation method of same

A technology of flame-retardant polyester and film, which is applied in the field of halogen-free flame-retardant polyester film and its preparation. Drops and other problems, to achieve the effect of not easy loss and degradation, improve carbon forming ability, and increase phosphorus content

Active Publication Date: 2016-02-10
JIANGSU YUXING FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the halogen-free flame retardants used in polyester PET are mostly modified by copolymerization, and the main ones are CEPPA and DDP. Their current main problem is that it is difficult to produce flame-retardant polyester chips with high phosphorus content. It takes a long time to polycondensate, the color of the product is not good, the heat resistance of the slice is poor, the production of the final product fiber or film is unstable, and it is prone to melt drops when burning.

Method used

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  • Halogen-free flame-retarding polyester thin film and preparation method of same
  • Halogen-free flame-retarding polyester thin film and preparation method of same
  • Halogen-free flame-retarding polyester thin film and preparation method of same

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 100 parts of polyester chips with a phosphorus content of 0.5%, 5.4 parts of OL5000, and 1.2 parts of MCA are dried and then processed into a blended flame-retardant polyester chip by a melt blending extruder. The prepared blended flame-retardant polyester The slices and 1 part of anti-blocking masterbatch enter the extruder after drying. The extrusion temperature is 220-290℃. After melting, they enter the die for casting. The temperature of the casting roll is lower than 35℃, and the resulting slab is drawn longitudinally. Stretching, stretching temperature is 70-100℃, stretching digit is 3 times, and then transverse stretching, stretching temperature is 100-130℃, stretching ratio is 3 times, stretching after 220-245℃ It is heat-set, cooled below 80°C and rewinded to obtain a flame-retardant polyester film with a thickness of 100μm.

Embodiment 2

[0024] 100 parts of polyester chips with a phosphorus content of 0.5%, 9 parts of OL5000, and 6 parts of MCA are dried and then processed into a blended flame-retardant polyester chip by a melt blending extruder. The prepared blended flame-retardant polyester chips and 2.5 parts of anti-blocking masterbatch, after drying, enter the extruder, the extrusion temperature is 220-290℃, and enter the die casting after melting, the casting roller temperature is lower than 35°C, the obtained thick sheet is stretched longitudinally, the stretching temperature is 70-100°C, the number of stretches is 3 times, and then the transverse stretch is performed, the stretching temperature is 100-130°C, and the stretching ratio is 3 times , After stretching, heat setting at 220-245℃, and after cooling below 80℃, it is rolled to obtain a flame-retardant polyester film with a thickness of 50μm.

Embodiment 3

[0026] 100 parts of polyester chips with a phosphorus content of 0.75%, 2 parts of OL3000, 1.5 parts of 0L5000, and 15 parts of MPP are dried and then processed into a blended flame-retardant polyester chip by a melt blending extruder. Blend flame-retardant polyester chips and 1.2 parts of anti-blocking masterbatch, enter the extruder after drying, the extrusion temperature is 220-290℃, and enter the die casting after melting, the temperature of the casting roll is lower than 35℃ , The obtained thick sheet is stretched longitudinally at a stretching temperature of 70-100°C, and the number of stretches is 3 times, and then transversely stretched at a temperature of 100-130°C, and the stretching ratio is 3 times. After stretching, it is heat-set at 220-245°C, cooled below 80°C and rewinded to obtain a flame-retardant polyester film with a thickness of 150μm.

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Abstract

The invention relates to a halogen-free flame-retarding polyester thin film and a preparation method of the same. The halogen-free flame-retarding polyester thin film includes, by weight, 100 parts of polyester chips being 0.5-1.8% in phosphorus content, 0.1-15 parts of an additional-type flame retardant, 1-20 parts of a nitrogen-containing expansive-type flame retardant and 0.1-5 parts of an anti-sticking master batch. The method solves the problem that high-phosphorus-content flame-retarding polyester chips are difficult to produce and effectively improves the flame-retarding performance of the polyester thin film. The employed additional-type flame retardant has a good compatibility with the polyester and is not liable to consume and degrade during the preparation process of the thin film, thereby ensuring stable and continuous production of the polyester thin film.

Description

Technical field [0001] The invention belongs to the technical field of flame-retardant film manufacturing, and specifically relates to a halogen-free flame-retardant polyester film and a preparation method thereof. Background technique [0002] Polyester film has the advantages of high modulus, high strength, acid resistance and heat resistance, making it widely used in various industries such as electronic insulation, solar backing materials, optical displays, and decorative products. However, due to the flammability of polyester, it is easy to catch fire and cause fire. Moreover, the polyester is easy to drip after being ignited, and the drips are likely to cause new ignition points or burn people. The dripping brings greater difficulties to fire fighting and causes huge losses to people's lives and property safety. Early flame-retardant polyesters are basically halogen-containing flame retardants. The products of such flame-retardant polyesters during combustion and high-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L85/02C08K5/3492C08K5/52B29C69/00B29C47/92B29C55/14B29C71/02B29C48/92
Inventor 王继伟刘全蒙钊徐莹磊夏毅
Owner JIANGSU YUXING FILM TECH
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