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High-heat-resistant polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene polymer materials, can solve the problems of strict storage conditions and difficulty in purchasing powder materials, and achieves the effect of being extremely easy to realize and improving the dispersing ability.

Inactive Publication Date: 2017-07-25
谢炳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powdery polyethylene used is unprocessed powdery polyethylene directly synthesized by the synthesis tower. For general enterprises, it is difficult to purchase powder, and because there is no addition of antioxidants and other additives The storage conditions must also be strict, which limits the application of this method to a certain extent.

Method used

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  • High-heat-resistant polypropylene composite material and preparation method thereof
  • High-heat-resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Accurately weigh homopolypropylene 66.4, talcum powder 30.0, polyethylene wax 0.05, polytetrafluoroethylene 3.0, antioxidant 1010 0.2, antioxidant DSTP 0.15, antioxidant 168 0.2 and place in a high-speed mixer by mass parts Mix for 5 minutes, then melt, extrude, and granulate through a twin-screw extruder.

[0048] The process parameters of the extruder are: zone 1 190-200°C, zone 2 200-210°C, zone 3 210-220°C, zone 4 205-215°C; the residence time of the entire extrusion process is 1-2 minutes, and the pressure is 12-18MPa.

Embodiment 2

[0050] Accurately weigh homopolypropylene 66.0, talcum powder 30.3, polyethylene wax 0.1, polytetrafluoroethylene 3.0, antioxidant 1010 0.2, antioxidant DSTP 0.2, antioxidant 168 0.2 and place in a high-speed mixer by mass parts Mix for 5 minutes, then melt, extrude, and granulate through a twin-screw extruder.

[0051] The process parameters of the extruder are: zone 1 190-200°C, zone 2 200-210°C, zone 3 210-220°C, zone 4 205-215°C; the residence time of the entire extrusion process is 1-2 minutes, and the pressure is 12-18MPa.

Embodiment 3

[0053] Accurately weigh homopolypropylene 64.9, talcum powder 30.5, polyethylene wax 1.0, polytetrafluoroethylene 3.0, antioxidant 1010 0.2, antioxidant DSTP 0.2, antioxidant 168 0.2 by mass parts and place in a high-speed mixer Mix for 5 minutes, then melt, extrude, and granulate through a twin-screw extruder.

[0054] The process parameters of the extruder are: zone 1 190-200°C, zone 2 200-210°C, zone 3 210-220°C, zone 4 205-215°C; the residence time of the entire extrusion process is 1-2 minutes, and the pressure is 12-18MPa.

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Abstract

The invention discloses a high-heat-resistant polypropylene composite material, which is prepared from the preparation raw materials including polypropylene, talcum powder and antioxidants and is also prepared from the following preparation raw materials in percentage by weight: 0.1 to 10 percent of polyethylene wax and 1 to 15 percent of polytetrafluoroethylene. The invention also discloses a preparation method of the high-heat-resistant polypropylene composite material. The proper amount of polyethylene wax and polytetrafluoroethylene are used, so that the dispersing capability of the talcum powder in a polypropylene composite material system can be obviously improved, and the prepared polypropylene composite material maintains a high-heat-resistant characteristic. The prepared polypropylene composite material ensures the feeding smoothness; meanwhile, all items of mechanical properties of the material are basically not influenced. The provided method for overcoming the feeding difficulty of the polypropylene composite material has the advantages that the preparation process is simple; the technical transformation on an extruding machine is not needed; the method can be easily realized in the practical production process.

Description

technical field [0001] The invention belongs to the field of polypropylene polymer materials, and in particular relates to a high heat-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene plays an irreplaceable role in the field of polymer materials due to its excellent performance characteristics. It has light weight, high tensile strength, high bending strength, good comprehensive performance, and it is cheap, easy to obtain, and easy to process. One of the most widely used plastic varieties in the world. However, polypropylene also has the obvious disadvantages of poor heat resistance and low rigidity. In order to solve this problem, scientific and technological workers have developed heat-resistant polypropylene, and heat-resistant modified polypropylene has largely replaced ABS, PC and other materials in the manufacture of household appliances. As for the modification method to improve the heat resist...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L27/18C08K3/34B29B9/06B29C47/92B29C48/92
CPCC08L23/12B29B9/06B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704C08L2201/08C08L2205/03C08L23/06C08L27/18C08K3/34
Inventor 谢炳
Owner 谢炳
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