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Flame-retardant PET (polyethylene glycol terephthalate) heat shrink film and preparation method thereof

A heat-shrinkable film and flame retardant technology, applied in the field of flame-retardant PET heat-shrinkable film and its preparation, can solve the problem of no research and report on PET heat-shrinkable film, and achieve the effects of preventing spontaneous combustion, preventing fire, and having strong shrinkage performance.

Active Publication Date: 2014-01-01
NINGGUO QIANHONG ELECTRONIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In life, we sometimes cannot avoid fires, etc., but there is no relevant research and report on PET heat shrinkable film with flame retardant effect.

Method used

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  • Flame-retardant PET (polyethylene glycol terephthalate) heat shrink film and preparation method thereof
  • Flame-retardant PET (polyethylene glycol terephthalate) heat shrink film and preparation method thereof
  • Flame-retardant PET (polyethylene glycol terephthalate) heat shrink film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A flame-retardant PET heat-shrinkable film, mainly made of the following raw materials in parts by weight: 80 parts of PET resin, 5 parts of decabromodiphenylethane, 1 part of HANKINS NCP-2, 2 parts of zinc stearate, phthalate 1 part of dibutyl diformate.

[0023] A method for preparing a flame-retardant PET heat-shrinkable film, comprising the following steps: weighing the raw materials in the above parts by weight;

[0024] Add PET resin, decabromodiphenylethane, HANKINS NCP-2, zinc stearate, and dibutyl phthalate into the reactor at 75°C, and stir at 150 rpm for 10 minutes; raise the temperature in the reactor To 290°C, the pressure drops below 90pa, and react under this condition for 2~3h to obtain a polymer melt, then extrude the prepared polymer melt, cut into pellets, and dry to obtain PET polyester chips; the above PET polyester chips Melt extrusion, die casting, casting sheet winding, biaxial stretching, cooling and setting, thickness measurement, winding, sli...

Embodiment 2

[0027] A flame-retardant PET heat-shrinkable film, which is mainly made of the following raw materials in parts by weight: 90 parts of PET resin, 10 parts of brominated epoxy resin, 5 parts of HANKINS NCP-2, 5 parts of ethylene bisstearamide, 3 parts of dibutyl phthalate.

[0028] The preparation method of the flame-retardant PET heat-shrinkable film comprises the following steps: weighing the raw materials in the above-mentioned parts by weight; adding PET resin, brominated epoxy resin, HANKINS NCP-2, and ethylene bis-stearin Amide, dibutyl phthalate, and stirred at 200rpm for 20min; the temperature in the reactor was raised to 300°C, and the pressure was lowered to below 90pa. Under these conditions, the polymer melt was obtained by reacting for 3h, and then the prepared polymer Melt extrusion, pelletizing, and drying to obtain PET polyester chips; melt extrusion of the above PET polyester chips, die casting, casting sheet winding, biaxial stretching, cooling and setting, th...

Embodiment 3

[0031] A flame-retardant PET heat-shrinkable film, mainly made of the following raw materials in parts by weight: 85 parts of PET resin, 7 parts of brominated polystyrene, 3 parts of HANKINS NCP-2, 3 parts of high melting point paraffin, phthalic acid 2 parts of dibutyl ester.

[0032] The preparation method of flame-retardant PET heat-shrinkable film comprises the following steps: weighing the raw materials of the above-mentioned parts by weight; adding PET resin, brominated polystyrene, HANKINS NCP-2, high melting point paraffin, ortho Dibutyl phthalate, and stirred at 180rpm for 15min; the temperature in the reactor was raised to 295°C, and the pressure was lowered to below 90pa. Under these conditions, the reaction was carried out for 2.5h to obtain a polymer melt, and then the prepared polymer melt Extrude, pelletize, and dry to obtain PET polyester chips; melt and extrude the above PET polyester chips, die casting, winding, biaxial stretching, cooling and setting, thickn...

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Abstract

The invention discloses a flame-retardant PET heat shrink film which comprises the following material in parts by weight: 80 to 90 parts of PET resin, 5 to 10 parts of environmentally friendly fire retardant, 1 to 5 parts of auxiliaries, 2 to 5 parts of lubricant and 1 to 3 parts of plasticizer. The flame-retardant PET heat shrink film not only has high tensile strength and high shrinkage performance, but also has a flame-retardant function, is applicable to external packing of electronic products, can prevent spontaneous combustion, which is caused by heat, of electronic products, and prevents fire hazard.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant PET heat-shrinkable film and a preparation method thereof. Background technique [0002] PET resin is a linear homopolyester formed by polycondensation of diol (ethylene glycol, EG) and dibasic acid (terephthalic acid, TPA), while copolyester is a polyester modified with alcohol or acid , PETG, PCTG and PCTA and degradable copolyester. [0003] PET film is a kind of packaging film with comprehensive performance. It has good transparency and luster; it has good air tightness and fragrance retention; it has moderate moisture resistance, and its moisture permeability decreases at low temperatures. PET film has excellent mechanical properties, its strength and toughness are the best among all thermoplastics, and its tensile strength and impact strength are much higher than ordinary films; it has good stiffness and stable size, and is suitabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L63/00C08L25/06C08K5/03B29C69/02
Inventor 王向东
Owner NINGGUO QIANHONG ELECTRONIC CO LTD
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