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A kind of viscosifying polyester masterbatch and a kind of viscosifying process

A technology of polyester masterbatch and masterbatch, which is applied in the field of plastic modification, can solve problems such as viscosity drop and affect product quality, and achieve simple and practical effects of increasing viscosity and thickening process

Active Publication Date: 2019-04-05
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the viscosity of the existing PET masterbatch decreases during the extrusion process and affects the product quality, the present invention provides a viscosifying polyester masterbatch and a viscosifying process

Method used

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  • A kind of viscosifying polyester masterbatch and a kind of viscosifying process
  • A kind of viscosifying polyester masterbatch and a kind of viscosifying process

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Effect test

Embodiment 1

[0041] The present invention provides a kind of thickening polyester masterbatch, and described thickening polyester masterbatch is thickening PET masterbatch, and described thickening PET masterbatch comprises following composition: 99% of PET masterbatch to be thickened, PET powder 0.5%, chain extender pyromellitic anhydride (PMDA) 0.25%, antioxidant 0.25%. The PET masterbatch to be thickened is recycled optical film, and the recycled optical film includes 80% PET. The material is automatically discharged by the weight loss scale of the extruder, and extruded to granulate. In the thickening process, the total feeding amount is 300kg / h, the screw speed of the extruder is 250 rpm, and the temperature of the extruder is set at 220°C-275°C. The obtained product is viscosifying PET masterbatch.

Embodiment 2

[0043] The invention provides a kind of thickening polyester masterbatch, and described thickening polyester masterbatch is thickening PET masterbatch, and described thickening PET masterbatch comprises following composition: 98% of PET masterbatch to be thickened, PET powder 1%, chain extender pyromellitic anhydride (PMDA) 0.5%, antioxidant 0.5%. The PET masterbatch to be thickened is recycled optical film, and the recycled optical film includes 80% PET. The material is automatically unloaded by the weight loss scale of the extruder, and extruded and granulated according to a certain ratio. In the thickening process, the total feeding amount is 300kg / h, the screw speed of the extruder is 250 rpm, and the temperature of the extruder is set at 220°C-275°C. The obtained product is viscosifying PET masterbatch.

Embodiment 3

[0045] The present invention provides a kind of thickening polyester masterbatch, and described thickening polyester masterbatch is thickening PET masterbatch, and described thickening PET masterbatch comprises following composition: 97% of PET masterbatch to be thickened, PET powder 1.5%, pyromellitic anhydride (PMDA) chain extender 0.75%, antioxidant 0.75%. The PET masterbatch to be thickened is recycled optical film, and the recycled optical film includes 80% PET. The material is automatically discharged by the weight loss scale of the extruder, and extruded to granulate. In the thickening process, the total feeding amount is 300kg / h, the screw speed of the extruder is 250 rpm, and the temperature of the extruder is set at 220°C-275°C. The obtained product is viscosifying PET masterbatch.

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Abstract

The invention belongs to the field of plastic modification, in particular to a viscosifying polyester masterbatch and a viscosifying process. In order to solve the problem that the viscosity of the existing PET masterbatch decreases during the extrusion process and the product quality is affected, the invention provides a viscosifying polyester masterbatch and a viscosifying process. The thickened polyester master batch includes the following raw materials: 90-99% of the polyester master batch to be thickened, 0.5-7% of polyester powder, 0.1-2.5% of chain extender, and 0.1-2.5% of antioxidant; Said percentages are percentages by weight. The tackified polyester masterbatch provided by the invention has higher viscosity after extrusion. The viscosity-increasing process provided by the invention is simple and practical, and can increase the viscosity of PET master batches or PET optical film recycled materials.

Description

technical field [0001] The invention belongs to the field of plastic modification, in particular to a viscosifying polyester masterbatch and a viscosifying process. Background technique [0002] PET (polyethylene terephthalate) has excellent heat resistance, corrosion resistance, toughness, electrical insulation, etc., and is cheap, so it is widely used in plastic fields such as fibers, films, and polyester bottles. During the production process of PET masterbatch, the viscosity of PET masterbatch will decrease to varying degrees due to heat and the shearing effect of the screw of the extruder, especially after some recycled materials are re-granulated, the viscosity decrease is particularly obvious. If used directly It will have a great impact on product quality, especially in fields such as biaxially oriented plastic films that have strict requirements on resin viscosity. Contents of the invention [0003] In order to solve the problem that the viscosity of the existing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K5/353C08K5/1539C08G63/91
CPCC08G63/91C08L67/02C08L2205/025C08L2207/20C08K5/1539C08K5/353
Inventor 金亚东裴旺
Owner NINGBO CHANGYANG TECH