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Conductive polypropylene composite material and preparation method thereof

A technology of composite materials and polypropylene, which is applied in the field of conductive polypropylene composite materials and its preparation, can solve problems such as high cost, poor processing performance and mechanical properties, and increased melt viscosity, so as to achieve low prices, improve processing performance, and promote scattered 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

In polymer composite conductive materials, conductive carbon black is the most commonly used conductive filler, and when carbon black and polymer are blended to meet the requirements of electrical conductivity, the content of carbon black required is usually high, resulting in an increase in the solution viscosity of the composite system. Poor processing performance and mechanical properties, and higher cost

Method used

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  • Conductive polypropylene composite material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] After mixing 3 parts by mass of 1-allyl-3-methyl-imidazolium chloride salt and 15 parts of conductive carbon black according to a certain mass ratio, they were ground and mixed at room temperature.

[0025] The conductive carbon black prepared above, 81 parts of homopolypropylene with a melt index of 60g / 10min, and 1 part of hindered phenolic heat stabilizer were weighed according to the mass ratio and mixed evenly, passed through a twin-screw extruder, through mixing, Conductive polypropylene composite material can be obtained by extrusion, drawing and pelletizing.

Embodiment 2

[0027] After mixing 4 parts by mass of 1-allyl-3-methyl-imidazolium chloride salt and 18 parts of conductive carbon black according to a certain mass ratio, they were ground and mixed at room temperature.

[0028] The conductive carbon black prepared above was mixed with 76.5 parts of copolymerized polypropylene having a melt index of 40g / 10min and 1.5 parts of heat stabilizer according to the mass ratio, and then mixed evenly, passed through a twin-screw extruder, through mixing, extrusion, drawing The conductive polypropylene composite material can be obtained by stripping and pelletizing.

Embodiment 3

[0030] After mixing 3.5 parts by mass of 1-allyl-3-methyl-imidazolium chloride salt and 20 parts of conductive carbon black according to a certain mass ratio, they were ground and mixed at room temperature.

[0031] The conductive carbon black prepared above was mixed with 75.7 parts of homopolypropylene with a melt index of 80g / 10min, and 0.8 parts of hindered phenolic heat stabilizer according to the mass ratio, and mixed evenly, passed through a twin-screw extruder, through mixing, Conductive polypropylene composite material can be obtained by extrusion, drawing and pelletizing.

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Abstract

The invention discloses a conductive polypropylene composite material and a preparation method thereof. The conductive polypropylene composite material is prepared from, by mass, 69-85.5% of polypropylene, 12-24% of conductive carbon black, 2-5% of 1-allyl-3-methylimidazolium chloride and 0.5-2% of heat stabilizers. Conductive carbon black is subjected to surface treatment through 1-allyl-3-methylimidazolium chloride so that dispersity and existence form of the conductive carbon black in the polypropylene matrix can be improved; the composite material has good conductivity on the premise of adding a small amount of carbon black, its surface resistance is lower then 190 Ohm, and accordingly the composite material can be applied to field such as packaging and electronic devices having requirements on electrostatic protection and industrial fields having requirements on electromagnetic shielding.

Description

Technical field: [0001] The invention relates to a polypropylene composite material, in particular to a conductive polypropylene composite material and a preparation method thereof. Background technique: [0002] The method of adding conductive fillers to polymers to prepare composite conductive polymers with durable and stable conductive properties has been widely used in many industries such as electronics, energy, chemical industry, and aerospace in recent years due to its simple process and wide adjustable range of resistivity. . In polymer composite conductive materials, conductive carbon black is the most commonly used conductive filler, and when carbon black and polymer are blended to meet the requirements of electrical conductivity, the content of carbon black required is usually high, resulting in an increase in the melt viscosity of the composite system. The processing performance and mechanical properties become worse, and the cost is higher. [0003] As the mos...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K9/04C08K3/04
CPCC08K9/04C08K3/04C08K2201/001C08L23/12C08L23/14
Inventor 杨桂生计娉婷朱敏廖雄兵
Owner HEFEI GENIUS NEW MATERIALS
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