Nano talcpowder modified polypropylene composite material and preparation method thereof

A technology of nano talc powder and composite materials, which is applied in the field of high-strength and low-density polypropylene composite materials and high toughness, and can solve the problems of failing to meet the end-use performance requirements of products, limited improvement of material performance, and affecting product performance. Achieve high rigidity and toughness, reduce density and weight, and improve performance

Active Publication Date: 2012-07-04
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding a small amount of nano-talc powder has limited improvement in material performance, and often fails to meet the end-use performance requirements of the product; while

Method used

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  • Nano talcpowder modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0058] Example 1

[0059] Main components: polypropylene (melt index 20g / 10min), nano talc (average particle size 80nm), maleic anhydride grafted polypropylene (grafting rate 0.5%, melt extruded from block co-polypropylene through maleic anhydride) Modification gain) 0.5%, Irganox 1010 (tetra [β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester, Ciba company) 0.1%, Igrafos 168 (phosphite tris(2, 4-di-tert-butylbenzene), Ciba company) ester 0.1%, Negonox DSTP (stearyl thiodipropionate, British ICE company) 0.3%.

[0060] According to the above weight percentages, the main components are dry-mixed in a high-speed mixer for 5 minutes, and then added to the twin-screw extruder for melt extrusion granulation. The temperature in the barrel is: 200°C in the first zone and 210°C in the second zone. The third zone is 210°C, the fourth zone is 210°C, the die head is 220°C, and the twin-screw extruder speed is 400 rpm. After the particles are dried, they are injectio...

Example Embodiment

[0061] Example 2

[0062] Main components: polypropylene (melt index 20g / 10min) 91%, nano-talc (average particle size 80nm) 7%, maleic anhydride grafted polypropylene (grafting rate 0.5%) 1.5%, Irganox 1010 (four [ β-(3,5-Di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester, Ciba company) 0.1%, Igrafos 168 (tris(2,4-di-tert-butylphenyl) phosphite, Ciba company) ) 0.1%, Negonox DSTP (stearyl thiodipropionate, British ICE company) 0.3%.

[0063] Weigh the main components according to the above weight percentages, dry-mix them in a high-speed mixer for 5 minutes, and then add them to the twin-screw extruder for melt extrusion granulation. The temperature in the barrel is 200°C in the first zone and 210°C in the second zone. , 210°C in three zones, 210°C in four zones, 220°C die head, twin-screw extruder speed 400 rpm. After the particles are dried, they are injection molded on an injection molding machine.

Example Embodiment

[0064] Example 3

[0065] Main components: polypropylene (melt index 20g / 10min) 81.5%, nano-talc (average particle size 80nm) 15%, maleic anhydride grafted polypropylene (grafting rate 0.5%) 3%, Irganox 1010 (four [ β-(3,5-Di-tert-butyl 4-hydroxyphenyl) propionic acid] pentaerythritol ester, Ciba company) 0.1%, Igrafos 168 (tris(2,4-di-tert-butylphenyl) phosphite, Ciba company) ) 0.1%, Negonox DSTP (stearyl thiodipropionate, British ICE company) 0.3%.

[0066] Weigh the main components according to the above weight percentages, dry blend them in a high-speed mixer for 5 minutes, and then add them to the twin-screw extruder for melt extrusion granulation. The temperature in the barrel is: 200℃ in the first zone and 210 in the second zone. ℃, 210℃ in three zones, 210℃ in four zones, 220℃ of die head, twin-screw extruder speed 400 rpm. After the particles are dried, they are injection molded on an injection molding machine.

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Abstract

The invention provides a nano talcpowder modified polypropylene composite material and a preparation method thereof. A nano-scale talcpowder filler is added and a proper amount of traditional micro-scale talcpowder is added for synergistic modification of polypropylene, an agglomeration phenomenon of the nano filler is avoided to the greatest extent by a special feed and extrusion process, and the composite material with higher comprehensive performance and wider application range is obtained under the conditions of relatively low material density and cost.

Description

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Claims

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Application Information

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Owner SHANGHAI PRET COMPOSITES
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