Method for tackifying recycled polyester bottle flake by using chain extender and application thereof

A technology for polyester bottle flakes and polyester recycling, which is applied in the field of comprehensive utilization of polymer materials, can solve the problems of increased molecular weight of r-PET, high equipment requirements, and high investment costs, and achieves enhanced methods, reduced crystallization enthalpy, and high efficiency. Effect
CN109749070AInactive Publication Date: 2019-05-14DALIAN POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN POLYTECHNIC UNIVERSITY
Publication Date
2019-05-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for tackifying recycled polyester bottle flakes by using chain extender and applications thereof and belongs to the field of comprehensive utilization of polymer materials recycling. The method for tackifying recycled the polyester bottle flakes by using the chain extender is characterized in that the recycled polyester flakes as adopted as matrix resin, the chain extender is added thereto for chemical chain extension reaction to obtain high viscosity polyester, and the recycled polyester component is polyethylene terephthalate. The method for tackifying recycled the polyester bottle flakes by using the chain extender has the advantages of effectively improving the intrinsic viscosity of r-PET (recycled polyethylene terephthalate) according to r-PET chain extension reaction mechanism and by selecting the suitable chain extender for compounding, enabling modified high-viscosity polyester material to meet the requirements of engineering plastics, playing an important role in expanding the application range of r-PET products, and providing research basis and practical guiding significance for the industrial production of the r-PET products.
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Description

technical field

[0001] The invention belongs to the field of comprehensive utilization of macromolecular materials, and in particular relates to a method for using a chain extender to increase viscosity and recycle polyester bottle flakes and its application. Background technique

[0002] With the continuous development of the plastics industry, the proportion of plastic materials in product packaging has increased rapidly. Polyethylene terephthalate (PET) is a polyester material with good mechanical properties and processing properties, which can be used to produce beverage bottles, packaging bags, films, fibers and other products. According to statistics, the domestic output of bottle-grade polyester in 2014 was 9588kt, and the output in 2017 was about 10323kt. It is estimated that by 2019, the production capacity of bottle-grade polyester in the world will grow at a rate of 5.0%.

[0003] PET is mostly consumed as a disposable product in the packaging market, and most co...

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
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