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High-performance recovered PET/ABS alloy

A high-performance, alloy technology, applied in the field of polymer materials, can solve problems such as the narrow controllable temperature range of alloy processing, the decrease of PET molecular weight, and the difficulty of guaranteeing product quality, etc., to achieve good fluidity, improved impact strength, and low cost. Effect

Inactive Publication Date: 2010-06-16
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] However, there are still the following disadvantages in this technology: Most of the compatibilizers used are maleic anhydride grafts. Due to the acid catalysis, the transesterification reaction of PET is intensified during processing, which makes the molecular weight of PET in the alloy drop sharply. The performance will decrease accordingly; in addition, the PET used is a new material, and its processing temperature is 260~290°C. At this temperature, ABS has begun to decompose, and the controllable temperature range of alloy processing is very narrow. Difficult to guarantee

Method used

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  • High-performance recovered PET/ABS alloy
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  • High-performance recovered PET/ABS alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0038]Weigh and dry recycled PET flakes 80.0%, ABS resin 10.1%, AS resin 1.0%, AS-g-MAH 3.0%, polybutadiene rubber 5.0%, ethylene glycol 0.5%, antioxidant Tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) pentaerythritol ester (antioxidant 1010) 0.4%. The mixed material is fed into a twin-screw extruder, melted and blended, extruded and granulated into an alloy material. Among them, the processing temperature is 190~235℃, the residence time is 2~3min, and the melt pressure is above 12MPa.

[0039] figure 2 It is the electron micrograph of embodiment 1 high performance recycling PET / ABS alloy impact section

[0040] From figure 2 It can be seen that the section of the high-performance recovered PET / ABS alloy provided by the present invention exhibits large undulations, is an obvious ductile fracture morphology, and has continuous alloy morphology without obvious macroscopic phase separation; and figure 1 The cross-section of the alloy shown is smooth, with obvious...

Embodiment 2

[0042] Weigh and dry recycled PET flakes 69.8%, ABS resin 10.8%, polymethyl methacrylate 5.8%, PS-g-PMMA 5.1%, methyl methacrylate-butadiene-styrene Terpolymer 4.5%, 1,10-decanediol 3.0%, antioxidant 1010 1.0%. The mixed material is fed into a twin-screw extruder, melted and blended, extruded and granulated into an alloy material. Among them, the processing temperature is 190~235℃, the residence time is 2~3min, and the melt pressure is above 12MPa.

Embodiment 3

[0044] Weigh and dry recycled PET flakes 60.3%, ABS resin 16.2%, glass fiber 3.6%, SEBS-g-MAH 12.1%, chlorinated polyethylene 4.3%, polyethylene glycol 2.7%, antioxidant 10100.8%. The mixed material is fed into a twin-screw extruder, melted and blended, extruded and granulated into an alloy material. Among them, the processing temperature is 190~235℃, the residence time is 2~3min, and the melt pressure is above 12MPa.

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Abstract

The invention discloses a high-performance recycled PET / ABS alloy. The alloy comprises the following components in percentage by weight: 30 to 80 percent of recycled PET, 10 to 50 percent of ABS, 1 to 10 percent of reinforcing agent, 2 to 15 percent of compatilizer, 0.5 to 5 percent of flexibilizer, 0.5 to 3 percent of polyhydroxy chemical coupling agent, and 0.1 to 1 percent of antioxidant. The alloy can improve a recycled PET system by using reasonable matching of additives, effects of the polyhydroxy chemical coupling agent, and excellent physical mechanic properties of an ABS system. Therefore, the recycled PET / ABS alloy has the advantages of high compatibility, high tensile strength, high mobility, good machinability and the like, is particularly suitable for producing complicated components and parts and large plates, has a simple process, is suitable for mass production of medium-sized and small enterprises, and has obvious economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a recycled PET / ABS alloy with high performance and low cost. technical background [0002] Polyethylene terephthalate (PET) is a kind of crystalline polyester with good organic solvent resistance, chemical resistance, self-lubricating properties and molding processing properties, etc. It is widely used in fibers, food packaging bottles, Plates, plastic steel strips, etc. At the same time, waste PET is also growing at a rate of 12% per year. Since recycled PET is extruded once, the intrinsic viscosity (IV) value will decrease by about 0.07dL / g. In the long run, its degradation will be more serious, which will limit the application field of recycled PET. Making recycled PET into alloy materials can effectively slow down the degree of degradation, making PET have higher use value and wider application fields. [0003] ABS plastic is an acrylonitrile-butadien...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L55/02C08K5/053C08K5/103
Inventor 石光何礼俊陈楚芝刘剑富柳勤钟许慧陈红雨
Owner SOUTH CHINA NORMAL UNIVERSITY
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