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A kind of halogen-free flame-retardant polyester film and preparation method thereof

A flame-retardant polyester and film technology, applied in the field of halogen-free flame-retardant polyester film and its preparation, can solve the problem of difficult production of high-phosphorus content flame-retardant polyester chips, polycondensation time, unstable production of fiber film, and easy to melt when burning. drop and other problems, to achieve the effect of not easy to lose and degrade, improve the carbon-forming ability, and increase the phosphorus content

Active Publication Date: 2017-08-15
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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  • A kind of halogen-free flame-retardant polyester film and preparation method thereof
  • A kind of halogen-free flame-retardant polyester film and preparation method thereof
  • A kind of halogen-free flame-retardant polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
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 to make blended flame-retardant polyester chips through a melt blending extruder. The prepared blended flame-retardant polyester Slices and 1 part of anti-blocking masterbatch, after drying, enter the extruder at an extrusion temperature of 220-290°C, melt and enter the die to cast flakes, the temperature of the cast rollers is lower than 35°C, and the obtained thick flakes are drawn longitudinally Stretching, the stretching temperature is 70-100°C, the stretching number is 3 times, and then transverse stretching, the stretching temperature is 100-130°C, the stretching ratio is 3 times, after stretching, it is stretched at 220-245°C Heat setting, cooling below 80°C and winding to make a flame-retardant polyester film with a thickness of 100 μm.

Embodiment 2

[0024] 100 parts of polyester chips with a phosphorus content of 0.5%, 9 parts of OL5000, and 6 parts of MCA were dried to make blended flame-retardant polyester chips through a melt blending extruder. The prepared blended flame-retardant polyester chips and 2.5 parts of anti-blocking masterbatch are dried and then enter the extruder at an extrusion temperature of 220-290°C. After being melted, they enter the die to be cast, and the temperature of the cast roll is lower than 35°C, the obtained thick sheet is stretched longitudinally, the stretching temperature is 70-100°C, and the number of stretches is 3 times, and then stretched transversely, the stretching temperature is 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 rolled to obtain a flame-retardant polyester film with a thickness of 50 μm.

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 made into blended flame-retardant polyester chips through a melt blending extruder. The prepared Blend flame-retardant polyester chips and 1.2 parts of anti-blocking masterbatch, enter the extruder after drying, the extrusion temperature is 220-290 ° C, and enter the die casting after melting, the temperature of the casting roll is lower than 35 ° C , the obtained thick sheet is stretched longitudinally, the stretching temperature is 70-100°C, the stretching number is 3 times, and then transversely stretched, the stretching temperature is 100-130°C, the stretching ratio is 3 times, and the stretching temperature is 100-130°C, the stretching ratio is 3 times, After stretching, it is heat-set at 220-245°C, cooled below 80°C, and rolled to obtain a flame-retardant polyester film with a thickness of 150 μm.

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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 manufacture, and in particular 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, which makes polyester film widely used in various industries such as electronic insulation, solar back material, optical display and decorative products. However, due to the flammability of polyester, it is easy to catch fire and cause a fire. Moreover, polyester is also easy to drip after ignition, and the dripping can easily cause a new ignition point or cause people to be scalded. The dripping brings greater difficulties to fire extinguishing and causes huge losses to people's lives and property safety. Early flame-retardant polyesters were basically halogen-containing flame retardants. The products of this kind of flame-retardant...

Claims

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Application Information

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Patent Type & Authority Patents(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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