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Application of hyperbranched polyester to plastic processing

A technology of hyperbranched polyester and hydroxyl-terminated hyperbranching, which is applied in the field of plastic processing aids, can solve the problems of high thermal degradation temperature and insufficient tensile strength of plastics, and can reduce processing temperature, enhance melt fluidity, and reduce processing temperature. and the effect of motor current

Inactive Publication Date: 2016-02-17
WEIHAI CY DENDRIMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an application of hyperbranched polyester in plastic processing, which solves the problems of high thermal degradation temperature and insufficient tensile strength of plastics in the prior art which limit its application

Method used

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  • Application of hyperbranched polyester to plastic processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The hydroxyl-terminated hyperbranched polyester is added to the PPC in an amount of 0.1% by mass, mixed uniformly, extruded and granulated, and dried to obtain a modified PPC product.

[0021] The amount of hydroxyl-terminated hyperbranched polyester in the present invention is represented by mass percentage, that is, the amount of addition is represented by the ratio of the quality of hydroxyl-terminated hyperbranched polyester to the quality of PPC; for example, in the present embodiment, hydroxyl-terminated hyperbranched polyester The addition amount of is 0.1%, namely in the PPC that the quality is 100 parts, add the hydroxyl-terminated hyperbranched polyester that the quality is 0.1 part.

Embodiment 2

[0023] The hydroxyl-terminated hyperbranched polyester is added to the PPC in an amount of 5% by mass, mixed uniformly, extruded and granulated, and dried to obtain a modified PPC product.

Embodiment 3

[0025] The hydroxyl-terminated hyperbranched polyester is dried and used for subsequent use; PPC and the above-mentioned hydroxyl-terminated hyperbranched polyester are mixed to obtain a mixture. At this time, the addition amount of the hydroxyl-terminated hyperbranched polyester is 1%, and it is used for subsequent use; the twin-screw extruder Raise the temperature to 160°C, preheat for 1 hour, put the above mixture into a twin-screw extruder, extrude and granulate; dry the produced particles at 50°C for 1 hour to obtain a modified PPC product.

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Abstract

The invention discloses an application of hyperbranched polyester to plastic processing, and belongs to the technical field of plastic processing assistants. The application of the hyperbranched polyester to plastic processing includes the steps that by mass, 0.1% to 5% of the hydroxyl-terminated hyperbranched polyester is added into plastic; the mixture is mixed to be even, extruded, prilled and dried, and a modified plastic product is obtained. According to the application, the plastic such as PPC and the hyperbranched polyester are melted and blended, and the plastic such PPC is modified through a double-screw extruder; after the hyperbranched polyester is added into a base material of the plastic such as PPC, the effective melt viscosity of the plastic such as PPC can be remarkably reduced; in other words, processing temperature and thermal degradation are reduced; in addition, melting fluidity improved in this way can also be achieved through the small adding amount,, and extruding film forming can be more easily achieved; the tensile strength of the modified plastic such as PPC is up to 30 MPa, and the strength can be higher than the strength of thin-film-level LLDPE and the strength of thin-film-level PVC.

Description

technical field [0001] The invention belongs to the technical field of plastic processing aids, in particular to the application of hyperbranched polyester in plastic processing. Background technique [0002] Hyperbranched polymer (HBP) is a new type of polymer material, which has the characteristics of three-dimensional structure, regular molecular structure and narrow relative molecular mass distribution. HBP has a compact structure similar to a sphere, and the molecular chains are less entangled, so the viscosity changes little with the increase of the relative molecular weight, and because there are many functional end groups in the molecule, the viscosity, solubility, thermal stability, glass transition temperature and the relative molecular weight distribution and other properties have a great influence. Hyperbranched polymers have a dendrimer-like structure (tree-like structure) and, due to their resemblance to dendrimers, possess similar physical properties as dendr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/00C08G63/60
CPCC08L69/00C08G63/60C08L67/00
Inventor 李武松康宏强刘聪聪
Owner WEIHAI CY DENDRIMER TECH
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