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High-performance polypropylene material and preparation method thereof

A polypropylene material and high-performance technology, which is applied in the field of high-performance polypropylene materials and their preparation, can solve the problems of difficulty in improving simultaneously, limited rigidity and toughness of modified polypropylene materials, and is suitable for large-scale industrial production. Mechanical properties, simple operation effect

Inactive Publication Date: 2019-04-05
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rigidity and toughness of modified polypropylene materials are limited, especially as a pair of contradictory properties, it is difficult to improve simultaneously.

Method used

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  • High-performance polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 77.9 parts by weight of polypropylene copolymer having a melt index of 30g / 10min, 0.5 parts by weight of basic magnesium sulfate whiskers, 1 part by weight of α-nucleating agent, 5 parts by weight of POE, 15 parts by weight of talcum powder, 0.2 parts by weight 1010, 0.2 parts by weight of 168 and 0.2 parts by weight of calcium stearate.

[0031] Its preparation process is as follows:

[0032] After uniformly mixing the above ingredients, put them into the twin-screw extruder, the temperature of the extruder is set at 190°C-210°C, and the rotation speed is 200rpm; Acrylic material. Its mechanical properties are listed in Table 1.

Embodiment 2

[0034] 69.2 parts by weight of homopolypropylene with a melt index of 60g / 10min, barium sulfate whiskers of 1 part by weight, α-nucleating agent of 0.8 parts by weight, POE of 8 parts by weight, calcium carbonate of 20 parts by weight, 0.3 parts by weight of 1010, 0.3 parts by weight of 168 and 0.4 parts by weight of zinc stearate.

[0035] Its preparation process is as follows:

[0036] After uniformly mixing the above ingredients, put them into the twin-screw extruder, the temperature of the extruder is set at 200°C-220°C, and the speed is 300rpm; the extruded product is cooled by water and pelletized to obtain high-performance polymer Acrylic material. Its mechanical properties are listed in Table 1.

Embodiment 3

[0038] 87.5 parts by weight of polypropylene copolymer having a melt index of 80g / 10min, 1.5 parts by weight of silicon carbide whiskers, 1.5 parts by weight of beta nucleating agent, 3 parts by weight of LLDPE, 5 parts by weight of mica, 0.5 parts by weight of 168 and 1 part by weight of calcium stearate.

[0039] Its preparation process is as follows:

[0040] After mixing the above ingredients evenly, put them into the twin-screw extruder, the temperature of the extruder is set at 210°C-230°C, and the rotation speed is 300rpm; Acrylic material. Its mechanical properties are listed in Table 1.

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Abstract

The invention discloses a high-performance polypropylene material which comprises, by weight, 99.2-54 parts of polypropylene, 0.1-2 parts of mineral crystal whiskers, 0.5-2 parts of nucleating agents,0-10 parts of toughening agents, 0-30 parts of inorganic fillers and 0.2-2 parts of antioxidants and processing agents. A preparation method of the material includes the steps: uniformly mixing components; adding the mixed components into a screw extruder; performing melting and mixing reaction; extruding and granulating mixture to obtain the high-performance polypropylene material. According tothe high-performance polypropylene material, the mineral crystal whiskers and the nucleating agents are matched, so that the polypropylene has a repeatedly alternated state of a shear layer and a crystallizing layer, the polypropylene with the structure has better rigidity and toughness as compared with traditional polypropylene, and high-performance preparation of the polypropylene is facilitated.

Description

Technical field: [0001] The invention belongs to the field of polymer materials, and in particular relates to a high-performance polypropylene material and a preparation method thereof. Background technique: [0002] Due to its light weight, low price, and excellent rigidity and toughness, polypropylene is currently one of the top five engineering plastics in general use, and has a wide range of applications in chemical, construction, automobile, home appliances and other fields. However, the rigidity and toughness of modified polypropylene materials are limited, especially as a pair of contradictory properties, it is difficult to improve simultaneously. [0003] The present invention proposes to design from the perspective of molecular structure of polypropylene for the first time, adding whiskers and nucleating agents at the same time during the modification, so that the product forms a multi-layer structure in which shear layers and crystal layers alternate with each othe...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L23/06C08K13/04C08K7/08C08K7/10C08K5/098C08K3/34
CPCC08L23/14C08K2201/014C08L23/12C08L2205/035C08L2205/06C08L2205/24C08L2205/242C08L2207/062C08L23/0815C08K13/04C08K7/08C08K3/34C08K5/098C08K7/10C08L23/06
Inventor 杨桂生计娉婷朱敏廖雄兵
Owner HEFEI GENIUS NEW MATERIALS