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High-performance automotive modified polypropylene composite material based on functional POSS hybridization and preparation method thereof

A technology of composite materials and polypropylene, applied in the field of polypropylene, can solve problems such as increasing costs and high performance requirements, and achieve the effect of reducing emissivity

Inactive Publication Date: 2020-05-01
SHANGHAI PRET COMPOSITES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the filled modified polypropylene materials in the mainstream market are mainly based on traditional mineral modification such as talcum powder / calcium carbonate. Some functional parts and reinforcements require higher performance requirements, which need to be applied to many engineering plastics and even special plastics, which greatly increases the cost of automobile manufacturing

Method used

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  • High-performance automotive modified polypropylene composite material based on functional POSS hybridization and preparation method thereof
  • High-performance automotive modified polypropylene composite material based on functional POSS hybridization and preparation method thereof
  • High-performance automotive modified polypropylene composite material based on functional POSS hybridization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Functional POSS nano-powder modified high-performance polypropylene composite material: according to weight parts, 4 parts of vinyl POSS and 80 parts of polypropylene with a flow rate of 60g / 10min, 5 parts of 3000 mesh talc, 9 parts of elastomer , 1010 antioxidant 0.1 parts, other additives: lubricant white oil, light stabilizer V703 1.9 parts together added to the high-speed mixer and mixed uniformly, then added to the twin-screw extruder, through the twin-screw extruder The machine melts, extrudes, cools, and pellets to prepare a modified polypropylene composite material.

[0027] The processing temperatures in the I-X zones of the twin-screw extruder are 155°C, 180°C, 200°C, 205°C, 215°C, 220°C, 225°C, 225°C, 230°C, and 235°C in sequence. The main screw speed is 550r / min, and the tank temperature is 38°C.

Embodiment 2

[0032] Functional POSS nano-powder modified high-performance polypropylene composite material: according to weight parts, 6 parts of vinyl POSS and 70 parts of polypropylene with a flow rate of 60g / 10min, 10 parts of 3000 mesh talc, 12 parts of elastomer , DSTP antioxidant 0.3 parts, other additives: lubricant white oil, light stabilizer 5589 1.5 parts together added to the high-speed mixer and mixed uniformly, then added to the twin-screw extruder, through the twin-screw extruder The machine melts, extrudes, cools, and pellets to prepare a modified polypropylene composite material.

[0033] The processing temperatures in the I-X zones of the twin-screw extruder are 155°C, 180°C, 200°C, 205°C, 215°C, 220°C, 225°C, 225°C, 230°C, and 235°C in sequence. The main screw speed is 550r / min, and the tank temperature is 38°C.

Embodiment 3

[0038] Functional POSS nano-powder modified high-performance polypropylene composite material: In parts by weight, 10 parts of epoxy-based POSS nano-powder, 70 parts of polypropylene with a flow rate of 30g / 10min, and 10 parts of 3000 mesh talc , 8 parts of elastomer, 0.5 part of DSTP antioxidant, other additives: lubricant white oil, 1.5 parts of light stabilizer 5589 and 1.5 parts are added to the high-speed mixer and mixed uniformly, and then added to the twin-screw extruder. The modified polypropylene composite material is prepared by melting, extruding, cooling and pelletizing through a twin screw extruder.

[0039] The processing temperatures in the I-X zones of the twin-screw extruder are 155°C, 180°C, 200°C, 205°C, 215°C, 220°C, 225°C, 225°C, 230°C, and 235°C in sequence. The main screw speed is 550r / min, and the tank temperature is 38°C.

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Abstract

The invention discloses a high-performance automotive modified polypropylene composite material based on functional POSS hybridization and a preparation method thereof. The modified polypropylene material is mainly composed of 1 to 10 parts of functionalized POSS nanometer powder, 45 to 90 parts of conventional polypropylene, 5 to 20 parts of talcum powder, 0 to 15 parts of an elastomer, 0.1 to 1.5 parts of an antioxidant and 0 to 3 parts of auxiliary agents. Compared with a traditional talcum powder modified polypropylene material, the material provided by the invention has the following advantages: due to introduction of functionalized POSS nanoparticles, the modified polypropylene material shows better mechanical properties; and specifically, the heat resistance and the low-temperatureimpact resistance of the modified polypropylene material are superior to the heat resistance and the low-temperature impact resistance of a common talcum powder filled polypropylene material mainly due to the fact that a functionalized POSS structure plays roles of a compatilizer and a nucleating agent in a system. Meanwhile, VOC and odor test results show that the modified polypropylene materialhas the characteristics of low VOC and low odor possibly due to the facts that the thermal stability is improved, and a hollow structure of POSS facilitates capturing unpleasant odor of small molecules.

Description

Technical field [0001] The invention relates to a functional polypropylene material and a preparation method thereof, in particular to a high-performance modified polypropylene composite material for vehicles based on functional POSS hybridization and a preparation method thereof, and belongs to the technical field of polypropylene. Background technique [0002] With the rapid development of the new automobile industry, higher requirements have been put forward for the lightweight, safety, comfort and environmental protection of automobiles. Therefore, the performance requirements of automotive interior and exterior materials also pose higher challenges. As a common material for automotive interior and exterior parts, modified polypropylene has outstanding advantages such as a wide range of sources, low density, good mechanical balance, chemical resistance, easy processing, and low price, making it the preferred plastic for automotive lightweighting. At present, the filled modif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08L23/08C08K3/34
CPCC08L23/12C08L2205/035C08K2201/005C08L83/04C08L23/0815C08K3/34
Inventor 冯晓峰张锴赵丽萍周楠婷吴俊蔡青周文
Owner SHANGHAI PRET COMPOSITES
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