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Toughened and modified polyethylene terephthalate composite material and preparation method thereof

A polyethylene terephthalate and composite material technology, applied in the field of high-toughness PET blends, can solve problems such as poor rigidity and strength, and achieve the effects of reducing dosage, low cost, and material cost

Active Publication Date: 2009-11-18
广东炜林纳新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned patents are basically pure rubber-plastic blends, and the rigidity and strength of the overall material are relatively poor.

Method used

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  • Toughened and modified polyethylene terephthalate composite material and preparation method thereof
  • Toughened and modified polyethylene terephthalate composite material and preparation method thereof
  • Toughened and modified polyethylene terephthalate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Dry the nano-calcium carbonate powder at 120°C for 6 hours, then pour it into a high-speed mixer with controllable temperature and stirring speed, set the temperature at 80-120°C, and stir at 3000rpm, then add 4% stearin acid, increase the rotating speed to 5000 rpm, and continue to stir for 20 minutes to obtain limited passivated inorganic nanomaterials. The above-mentioned nano-filler and maleic anhydride grafted POE are prepared in a weight ratio of 1 / 4 to prepare an elastomer-coated nano-calcium carbonate composite material. Then, the above elastomer-coated composite material and polyethylene terephthalate were melt-blended on a twin-screw extruder at a weight ratio of 25 / 100 to prepare a high-toughness PET composite material. The temperature of each section of the extruder is 160-250° C., and the screw speed is 100-300 rpm. After granulation and drying, prepare national standard mechanical property test specimens on the injection molding machine, the temperature o...

Embodiment 2

[0050] Dry the nano-calcium carbonate powder at 120°C for 6 hours, then pour it into a high-speed mixer with controllable temperature and stirring speed, set the temperature at 80-120°C, and stir at 3000rpm, then add 4% stearic acid , increase the rotation speed to 5000 rpm, and continue stirring for 20 minutes to obtain limited passivated inorganic nanomaterials. The above-mentioned nano-filler and maleic anhydride-grafted POE are prepared in a weight ratio of 1 / 2 to prepare an elastomer-coated nano-calcium carbonate composite material. Then, the above elastomer-coated composite material and polyethylene terephthalate were melt-blended on a twin-screw extruder at a weight ratio of 30 / 100 to prepare a high-toughness PET composite material. The temperature of each section of the extruder is 160-250° C., and the screw speed is 100-300 rpm. After granulation and drying, prepare national standard mechanical property test specimens on the injection molding machine, the temperature...

Embodiment 3

[0052] Dry the nano-calcium carbonate powder at 120°C for 6 hours, then pour it into a high-speed mixer with controllable temperature and stirring speed, set the temperature at 80-120°C, and stir at a speed of 3000rpm, then add 4% rare earth surface treatment agent, increase the rotation speed to 5000 rpm, and continue to stir for 20 minutes to obtain limited passivation inorganic nanomaterials. The above-mentioned nano-filler and maleic anhydride-grafted POE are prepared in a weight ratio of 1 / 4 to prepare an elastomer-coated nano-calcium carbonate composite material. Then, the above elastomer-coated composite material and polyethylene terephthalate were melt-blended on a twin-screw extruder at a weight ratio of 25 / 100 to prepare a high-toughness PET composite material. The temperature of each section of the extruder is 160-250° C., and the screw speed is 100-300 rpm. After granulation and drying, prepare national standard mechanical property test specimens on the injection ...

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Abstract

The invention provides a high-toughness polyethylene terephthalate (PET) composite material and a preparation method thereof. The composite material comprises a PET matrix, an elastic body, an inorganic nano material and a surface treating agent. The invention adopts a simple method to obtain a soft shell-hard core structure (sandbag structure) of an elastic body covered packing material so as to obtain the composite material with high toughness and high rigidity. The method achieves elastic body / nano calcium carbonate synergistic toughening of the polyethylene terephthalate, enlarges the application range, and reduces the cost of the material.

Description

technical field [0001] The present invention relates to a kind of polyethylene terephthalate (PET) toughening modification material and preparation method thereof, more specifically, the present invention relates to a kind of plastic material prepared by synergistic toughening of elastomer and inorganic nanoparticles High tenacity PET blend. Background technique [0002] Polyethylene terephthalate is cheap and has the advantages of excellent wear resistance, heat resistance, chemical resistance, electrical insulation and high mechanical strength, but its shortcomings of high brittleness and low impact strength still limit its scope of application. The use of elastomer toughened plastics can greatly improve the impact resistance of the material, but at the same time it also causes a serious decline in strength, rigidity, heat resistance, etc., and also greatly increases the cost of the material. [0003] A large number of experiments and theoretical studies have shown that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/04C08L51/06C08L23/00C08L23/16
Inventor 黄锐陈俊郑德钱玉英何阳
Owner 广东炜林纳新材料科技股份有限公司
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