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Low-odor, low-volatilization and high-wear-resistance polyethylene glycol terephthalate composition and preparation method thereof

A kind of polyethylene terephthalate, polybutylene terephthalate technology

Inactive Publication Date: 2019-07-30
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyethylene terephthalate has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good. However, the corona resistance is poor, and the creep resistance, fatigue resistance and dimensional stability are good
[0004] Although polyethylene terephthalate has many excellent properties, the application of polyethylene terephthalate will be greatly restricted in some fields that require high odor and wear resistance

Method used

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  • Low-odor, low-volatilization and high-wear-resistance polyethylene glycol terephthalate composition and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0032] Preparation of odor adsorption masterbatch: 100 parts of high-density polyethylene, 5 parts of hydrophobic diatomaceous earth, 10 parts of hydrophobic activated carbon, 5 parts of needle-shaped zeolite molecular sieve, 10 parts of zinc ricinoleate, 5 parts of nano-silica, hard 1 part of calcium fatty acid and 5 parts of melamine were uniformly mixed, and then extruded and granulated in a twin-screw extruder to obtain odor-absorbing masterbatches.

[0033] The crystallinity of high-density polyethylene is 85%, and the number average molecular weight is 250,000.

[0034] The melt index of polyethylene terephthalate is 25-28g / 10min; the melt index of polybutylene terephthalate is 28-30g / 10min.

Embodiment 1

[0036] 70 parts of polyethylene terephthalate, 1 part of polybutylene terephthalate, 1 part of maleic anhydride, 3 parts of odor-absorbing masterbatches, 0.5 parts of molybdenum disilicide, 1 part of silicone powder, Add 0.5 parts of antioxidant 1010 and 0.5 parts of antioxidant 168 into a high-speed mixer, stir at a high speed, mix until uniform, then add to a twin-screw extruder, and mix 30 parts of polypyromellitic imide modified glass fibers from The glass fiber is added into the mouth, melted and extruded, and then granulated to obtain a polyethylene terephthalate composition with low odor, low emission and high wear resistance.

[0037] The temperature of the first zone of the twin-screw extruder is 180°C, the temperature of the second zone is 180°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 210°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone is 245°C; The rotational speed of the twin-screw main...

Embodiment 2

[0039] 54 parts of polyethylene terephthalate, 2 parts of polybutylene terephthalate, 2 parts of maleic anhydride, 1 part of odor absorption masterbatch, 0.2 part of molybdenum disilicide, 0.2 part of paraffin, 0.1 part Antioxidant 1010 and 0.1 part of antioxidant 168 were added to a high-speed mixer, stirred at a high speed, mixed until uniform, then added to a twin-screw extruder, and 30 parts of polypyromellitic imide modified glass fibers were made from glass fiber Orally added, melted and extruded, then granulated to obtain a polyethylene terephthalate composition with low odor, low emission and high wear resistance.

[0040] The temperature of the first zone of the twin-screw extruder is 190°C, the temperature of the second zone is 190°C, the temperature of the third zone is 200°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 300°C, and the temperature of the sixth zone is 300°C; The rotational speed of the twin-screw main engine is 5...

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Abstract

The invention discloses a low-odor, low-volatilization and high-wear-resistance polyethylene glycol terephthalate composition and a preparation method thereof. The composition is prepared from, by weight, 54-90 parts of polyethylene glycol terephthalate, 1-5 parts of polybutylene terephthalate, 0-5 parts of maleic anhydride, 5-45 parts of glass fiber, 1-5 parts of odor adsorption masterbatch, 0.1-0.5 part of molybdenum disilicide, 0.2-1.0 part of a lubricant, and 0.1-1 part of an antioxidant. The glass fiber is subjected to immersion treatment with polyphenyltetramethylamide dispersion liquid,the dispersion of the glass fiber in a polyethylene glycol terephthalate base is greatly improved, the wear resistance of the prepared composition is significantly improved, and meanwhile the composition maintains excellent mechanical properties. The odor adsorption masterbatch is used for reducing the content of small molecules in the composition, and the content of a total volatile organic compound (TVOC) is significantly reduced; the low odor property of the composition is ensured, and the various physical and mechanical properties and the material molding processing properties are not affected.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyethylene terephthalate composition with low odor, low emission and high wear resistance and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is synthesized from bishydroxyethyl terephthalate by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. Then proceed to polycondensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface, and is a common resin in daily life. [0003] Polyethylene terephthalate has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L83/04C08L91/06C08K13/06C08K9/04C08K7/14C08K3/04C08K7/26C08K3/36C08K3/34C08J3/22
CPCC08J3/226C08J2367/02C08J2423/06C08J2467/02C08J2483/04C08J2491/06C08K3/04C08K3/34C08K3/36C08K7/14C08K7/26C08K9/08C08K13/06C08K2201/011
Inventor 杨桂生吴安琪范继贤姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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