Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn

A preparation process and modification technology, applied in rayon manufacturing, conjugated synthetic polymer rayon, fiber chemical characteristics, etc., can solve the problems of molecular weight reduction, poor impact performance of products, low intrinsic viscosity coefficient, etc., and achieve performance The effect of index improvement, excellent elastic performance, and improved heat resistance

Inactive Publication Date: 2015-11-25
TAICANG HONGYI CHEM FIBER
View PDF10 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, waste PET bottles are easily degraded by heat during the recycling process, and their molecular chains are broken, resulting in a significant decrease in molecular weight, which makes them have defects such as low intrinsic viscosity coefficient, poor flow stability, difficult demoulding, and poor product impact properties. The elastic and mechanical properties of PBT-PET copolymerized modified materials have declined, which limits the application of PBT-PET composite materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Wash the mineral water bottle to remove non-PET materials, and prepare recycled PET slices after being crushed by a crusher, washed, dried, extruded and granulated;

[0027] (2) The regenerated PET slices, the CaCO with a diameter of 30nm that accounts for 5% of the mass fraction of the regenerated PET slices 3 The powder and the aluminate coupling agent accounting for 4% of the mass fraction of recycled PET chips are placed in a mixer, the temperature is controlled at 180°C, and nitrogen is filled for 0.5h, and then extruded and granulated by a twin-screw extruder to obtain improved Sexually regenerated PET;

[0028] (3) First, dry the modified regenerated PET and PBT at 120°C for 2h. In parts by weight, 50 parts of modified regenerated PET, 60 parts of PBT, 3 parts of maleic anhydride grafted styrene, and 0.3 parts of phosphite Amine and 4 parts of thermoplastic polyester elastomer were placed in a mixer and mixed, the temperature was controlled at 240°C, mixed f...

Embodiment 2

[0031] (1) Wash the mineral water bottle to remove non-PET materials, and prepare recycled PET slices after being crushed by a crusher, washed, dried, extruded and granulated;

[0032] (2) The regenerated PET slices, the CaSiO 20nm diameter that accounts for 9% of the regenerated PET slice mass fraction 3 The powder and the titanate coupling agent accounting for 3% of the mass fraction of recycled PET chips are placed in a mixer, the temperature is controlled at 200 ° C, mixed with nitrogen for 1 hour, and modified by extruding and granulating through a twin-screw extruder recycled PET;

[0033] (3) firstly dry modified regenerated PET and PBT at 110°C for 1h, in parts by weight, 30 parts of modified regenerated PET, 50 parts of PBT, 5 parts of acrylonitrile-styrene-maleic anhydride terpolymer, 0.5 parts of silicone oil and 5 parts of thermoplastic polyester elastomer were mixed in a mixer, the temperature was controlled at 260°C, mixed for 3 hours, extruded and granulated by...

Embodiment 3

[0036] (1) Wash the mineral water bottle to remove non-PET materials, and prepare recycled PET slices after being crushed by a crusher, washed, dried, extruded and granulated;

[0037] (2) CaSO with a diameter of 40nm that accounts for 10% of the mass fraction of regenerated PET slices and regenerated PET slices 4 The powder and aluminate coupling agent accounting for 5% of the mass fraction of recycled PET chips are placed in a mixer, the temperature is controlled at 180 ° C, mixed with nitrogen for 1 hour, and modified by extruding and granulating through a twin-screw extruder recycled PET;

[0038] (3) First, dry the modified regenerated PET and PBT at 140°C for 1h. In parts by weight, mix 50 parts of modified regenerated PET, 70 parts of PBT, 4 parts of PETG, 0.8 parts of phosphite amine, and 5 parts of thermoplastic The polyester elastomer was mixed in a mixer, the temperature was controlled at 260°C, mixed for 3 hours, and extruded and granulated by a twin-screw extruder ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation technology of PBT (polybutylene terephthalate)-regenerated PET (polyethylene glycol terephthalate) modified stretch yarn. The preparation technology of the PBT-regenerated PET modified stretch yarn comprises steps as follows: (1) washing mineral water bottles, removing non-PET materials, and preparing regenerated PET slices after crushing with a crusher, washing, drying and extrusion granulation; (2) placing the regenerated PET slices, nano powder and a coupling agent in a mixer, and performing extrusion granulation by a twin-screw extruder to obtain modified regenerated PET; (3) placing the modified regenerated PET, PBT, a compatilizer, an antioxidant and a toughening agent in the mixer for mixing in parts by weight, and performing extrusion granulation by the twin-screw extruder to prepare PBT-modified regenerated PET granules; (4) placing the PBT-modified regenerated PET granules in a screw type spinning machine for melt spinning, and after cooling, performing oiling, balancing, winding and drafting treatment to obtain the PBT-modified regenerated PET stretch yarn. The polymerized and modified PBT-regenerated PET stretch yarn prepared with the technology is excellent in elasticity and good in mechanical performance.

Description

technical field [0001] The invention relates to the technical field of PBT-PET copolyester, in particular to a preparation process of PBT-regenerated PET modified elastic yarn. Background technique [0002] Polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) are two very important polyester materials widely used in electronics, instrumentation and automotive industries. Due to the difference in the chemical structure of the two, there is a big difference in the performance of PBT and PET. [0003] PBT has good durability, dimensional stability and good elasticity, and the elasticity is not affected by humidity; PBT and its products have soft handle, good hygroscopicity, abrasion resistance and fiber curling, and have good dyeing performance ; But the heat distortion temperature of PBT is low, the strength of PBT has a strong dependence on temperature, and the price of PBT is much higher than that of PET, so the use of PBT is subject to certain restrictions...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/10D01D5/08
Inventor 陆国强
Owner TAICANG HONGYI CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com