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Special halogen-free flame-retardant recycled PET (polyethylene terephthalate) sheet material for coil packaging and preparation method thereof

A technology for packaging and special materials, applied in the field of packaging material manufacturing, can solve the problems of poor impact resistance, low tensile strength and high price, and achieve the effects of good mechanical properties, low melt viscosity and reduced dosage.

Active Publication Date: 2019-05-10
武汉融科包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plastic packaging has disadvantages such as high price, low tensile strength (generally below 15MPa), poor impact resistance, and flammability, which limit its use to a certain extent.

Method used

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  • Special halogen-free flame-retardant recycled PET (polyethylene terephthalate) sheet material for coil packaging and preparation method thereof
  • Special halogen-free flame-retardant recycled PET (polyethylene terephthalate) sheet material for coil packaging and preparation method thereof
  • Special halogen-free flame-retardant recycled PET (polyethylene terephthalate) sheet material for coil packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A special halogen-free flame-retardant high-impact recycled PET sheet material for steel coil packaging, which is prepared from recycled PET, toughening agent, aluminum diethylphosphinate, polyacrylonitrile powder, and antioxidant raw materials. The parts by weight of each raw material are:

[0020]

[0021] The intrinsic viscosity value of described recycled PET is 0.55dl / g,

[0022] The toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer,

[0023] The antioxidant is selected from tris[2,4-di-tert-butylphenyl]phosphite.

[0024] The polyacrylonitrile powder is homopolyacrylonitrile, with an average particle diameter of 25um and a weight average molecular weight of M w for 25000.

[0025] The preparation method of the halogen-free flame-retardant recycled PET sheet special material for steel coil packaging in this embodiment comprises the following process steps:

[0026] 1) Dry the recycled PET in an oven for later use: the dryin...

Embodiment 2

[0032] A special halogen-free flame-retardant recycled PET sheet material for steel coil packaging, which is prepared from recycled PET, toughening agent, aluminum diethylphosphinate, polyacrylonitrile powder, and antioxidant raw materials. The parts by weight are:

[0033]

[0034] The intrinsic viscosity value of the regenerated PET is 0.60dl / g,

[0035] The toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer,

[0036] The antioxidant is selected from three [2,4-di-tert-butylphenyl] phosphite,

[0037] The polyacrylonitrile powder is homopolyacrylonitrile, with an average particle diameter of 30um and a weight average molecular weight of M w is 25000,

[0038] The preparation method of the halogen-free flame-retardant recycled PET sheet special material for steel coil packaging includes the following process steps:

[0039] 1) Dry the recycled PET in an oven for later use: the drying temperature is 120°C, and the drying time is 4 hours...

Embodiment 3

[0045] A special halogen-free flame-retardant recycled PET sheet material for steel coil packaging, which is prepared from recycled PET, toughening agent, aluminum diethylphosphinate, polyacrylonitrile powder, and antioxidant raw materials. The parts by weight are:

[0046]

[0047] The intrinsic viscosity value of described recycled PET is 0.65dl / g,

[0048] The toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer,

[0049] Described antioxidant is selected from two (2,4-di-tert-butylphenyl) pentaerythritol diphosphates,

[0050] The polyacrylonitrile powder is homopolyacrylonitrile, with an average particle diameter of 30um and a weight average molecular weight of M w for 25000.

[0051] The preparation method of the halogen-free flame-retardant recycled PET sheet special material for steel coil packaging in this embodiment comprises the following process steps:

[0052] 1) Dry the recycled PET in an oven for later use: the drying tempe...

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Abstract

The invention relates to a special halogen-free flame-retardant recycled PET (polyethylene terephthalate) sheet material for coil packaging, prepared from, by weight, 100 parts of recycled PET, 5-10 parts of a toughener, 5-9 parts of aluminum diethyl phosphinate, 2-5 parts of polyacrylonitrile powder, and 0.5-1.5 parts of an antioxidant material. A preparation method of the special halogen-free flame-retardant recycled PET sheet material for coil packaging is also provided; the preparation method includes the steps of 1) drying the recycled PET; 2) mixing the dried recycled PET with the toughener, aluminum phosphinate, polyacrylonitrile powder and the antioxidant to obtain a mixture; 3) subjecting the mixture to melt extrusion with a twin-screw extruder in vacuum for granulating. A recycled PET sheet prepared with the special halogen-free flame-retardant recycled PET sheet material for coil packaging has the advantages of high tensile strength, excellent flame retardance, good impact resistance and good processing mobility and is suitable for the field of coil packaging.

Description

technical field [0001] The invention belongs to the technical field of packaging material manufacturing, and in particular relates to a special halogen-free flame-retardant recycled PET sheet material for steel coil packaging and a preparation method thereof. Background technique [0002] Metallurgical cold-rolled sheets, galvanized sheets, tin-plated sheets, color-coated sheets, silicon steel sheets and other high-quality steel coils have large weight and inertia, and the outer edges of both ends are easily damaged by impact during transportation. Once it is hit, it will cause the deformation of the end of the steel coil and affect the quality of the steel plate. Therefore, the protection of the steel coil during storage and transportation is particularly important. [0003] At present, the existing protective packaging materials for steel coils are mainly divided into wooden packaging, metal packaging and plastic packaging. Among them, plastic packaging is widely used beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L33/20C08L23/08C08L51/06C08K5/5313
Inventor 潘启来张家敏黄年华
Owner 武汉融科包装材料有限公司
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