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Polyethylene toughening thermoplastic polyester composite material and preparation method thereof

A thermoplastic polyester and composite material technology, which is applied in the field of polyethylene toughened thermoplastic polyester composite material and its preparation, can solve problems such as poor comprehensive performance, and achieve the effects of low cost, overcoming difficulties in forming and processing, and simple process

Active Publication Date: 2013-04-03
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects of poor comprehensive properties of existing polyethylene, polyester or their composite materials, the present invention provides a polyethylene toughened thermoplastic polyester composite material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method of the polyethylene toughened thermoplastic polyester composite material provided by the invention comprises the following steps:

[0032] (1) Weigh thermoplastic polyester resin, polyethylene and additives, and mix them in a high-speed mixer for 3-5 minutes;

[0033] (2) Add the mixed material obtained in step (1) to the feed port of the twin-screw extruder, add glass fiber from the first exhaust port, and the mixture is cut and mixed by the screw and extruded from the die to form strips, cooled and pelletized, packaged to obtain the composite material.

[0034] Among them, the temperature of each zone and die head of the extruder is 200-230°C, 220-250°C, 230-260°C, 240-270°C, 250-280°C, the screw speed is 400-800rpm, and the filter screen aperture is 50 μm.

[0035] The mechanical properties, heat deflection temperature and flame retardant performance of the polyethylene toughened thermoplastic polyester composite material provided by the pres...

Embodiment 1

[0043] Weigh 50% PET resin, 40% linear low density polyethylene, 0.5% antioxidant 1010, 0.5% antioxidant 168, 0.5% Millad3988, 1.5% KH550, 2% maleic anhydride grafted high density polyethylene , mixed in a high-speed mixer for 3-5 minutes, the stirring blade speed is 1300rpm, and the mixed material is added to the feeding port of the twin-screw extruder; 5% chopped glass fiber is added from the first exhaust port, and the mixture passes through After shearing and kneading by the screw, it is extruded from the die head into strands, cooled and cut into pellets, and packaged to obtain composite material A1. The temperature of each zone and die head is 200-230°C, 220-250°C, 230-260°C, 240-270°C, 250-280°C, the screw speed is 600rpm, and the filter screen aperture is 50μm.

Embodiment 2

[0045] Weigh 60% PET resin, 5% linear low density polyethylene, 1% antioxidant 1010, 0.5% NU-100, 1.5% KH560, 2% maleic anhydride grafted linear low density polyethylene, mix at high speed Machine mixing for 3-5 minutes, the speed of the stirring paddle is 1300rpm, and the mixed material is added to the feeding port of the twin-screw extruder; 30% chopped glass fiber is added from the first exhaust port, and the mixture is sheared by the screw. 1. After mixing, extrude from the die into strips, cool and cut into pellets, and pack to obtain composite material A2. The temperature of each zone and die head is 200-230°C, 220-250°C, 230-260°C, 240-270°C, 250-280°C, the screw speed is 600rpm, and the filter screen aperture is 50μm.

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PUM

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Abstract

The invention relates to the field of modification of high molecular materials, and in particular relates to a polyethylene toughening thermoplastic polyester composite material and a preparation method of the polyethylene toughening thermoplastic polyester composite material, aiming at overcoming the shortcoming of comparatively poor comprehensive performance of the existing polyethylene, polyester or other composite materials, wherein the composite material consists of 5-60% of thermoplastic polyester resin, 5-60% of glass fiber, 5-60% of polyethylene resin and 2-10% of aid according to weight proportion. The polyethylene toughening thermoplastic polyester composite material disclosed by the invention is comparatively low in cost; by enhancing the toughness through the glass fiber and by finely selecting various component materials and proportions of the component materials, the composite material is excellent in physical performance, capable of overcoming the shortcomings of difficult forming and processing of the thermoplastic polyester, insufficient toughness of the material and the like, and effectively improving the mechanical performance and thermical performance; and the preparation method is simple in process and easy to operate.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a polyethylene toughened thermoplastic polyester composite material and a preparation method thereof. Background technique [0002] Traditional thermoplastic polyesters are mainly divided into two categories: polybutylene terephthalate (PBT) and polyethylene terephthalate (PET). Due to the excellent performance of thermoplastic polyester in terms of physical and mechanical properties, heat resistance, electrical properties and film forming properties. Therefore, it is widely used in engineering plastics, fiber textile and film industries. Especially as an engineering plastic application, compared with other traditional engineering plastics, such as polyamide (PA), polycarbonate (PC), etc., it has extremely high cost performance, so it is extremely competitive. However, due to the disadvantages of thermoplastic polyester (especially PET resin) with low crystallizatio...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/06C08L51/06C08K13/04C08K7/14
Inventor 不公告发明人
Owner NINGBO CHANGYANG TECH
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