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
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Weigh 80.0% of dried recycled PET flakes, 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)propionic acid) pentaerythritol ester (antioxidant 1010) 0.4%. The mixed materials are added to the twin-screw extruder, melted and blended, extruded and pelletized into alloy materials. Among them, the processing temperature is 190~235℃, the residence time is 2~3min, and the melt pressure is above 12MPa.

[0039] figure 2 Electron micrograph of the impact section of Example 1 high-performance recycled PET / ABS alloy

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

Example Embodiment

[0041] Example 2

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

Example Embodiment

[0043] Example 3

[0044] Weigh 60.3% of the dried recycled PET flakes, 16.2% of ABS resin, 3.6% of glass fiber, 12.1% of SEBS-g-MAH, 4.3% of chlorinated polyethylene, 2.7% of polyethylene glycol, and antioxidant by weight. 10100.8%. The mixed materials are added to the twin-screw extruder, melted and blended, extruded and pelletized into alloy materials. 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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