Polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene modified composite materials and its preparation, can solve the problems of easy cracking, slow heat exchange rate, poor impact resistance, etc., achieve good interfacial compatibility, improve interface Combining and improving the effect of mechanical properties

Active Publication Date: 2014-11-19
RIFENG ENTERPRISE GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene has a high glass transition temperature, which leads to its poor low-temperature impact resistance, and it is prone to brittle cracks when it is impacted in cold seasons; and the disadv

Method used

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  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof
  • Polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Pour 100 parts by weight of alumina fillers with a size of 6000 mesh into distilled water at 100 ° C, ultrasonically disperse for 1 hour, take out and dry for later use, 1 weight part of aluminum ester acid coupling agent is dissolved in ethanol solution for alcoholysis For 1 hour, add the nano thermal conductive filler for drying, stir at a constant temperature of 75°C for 1 hour, vacuum filter, dry, grind and sieve to obtain the surface-treated alumina filler;

[0016] (2) 100 parts by weight of modified alumina filler and 20 parts by weight of maleic anhydride grafted polyolefin elastomer, 1.5 parts by weight of antioxidant 1010, 2 parts by weight of stearic acid are directly put into high-speed mixer and carried out Initial mixing, mixing at room temperature;

[0017] (3) moving the mixture obtained in the step (2) into the twin-screw and kneading evenly, the extrusion temperature is 200 ° C, water-cooled granulation, and fully dried;

[0018] (4) mixing the ma...

Embodiment 2

[0020] (1) 120 parts by weight of alumina fillers with a size of 7000 objects are first subjected to surface treatment with an aluminum ester acid coupling agent; the consumption of the aluminum ester acid coupling agent is 1 part by weight;

[0021] (2) 120 parts by weight of modified alumina filler and 25 parts by weight of maleic anhydride grafted polyolefin elastomer, 1.5 parts by weight of antioxidant 1010, 2 parts by weight of stearic acid are directly put into high-speed mixer and carried out Initial mixing, mixing at room temperature;

[0022] (3) moving the mixture obtained in the step (2) into the twin-screw and kneading evenly, the extrusion temperature is 200 ° C, water-cooled granulation, and fully dried;

[0023] (4) The material obtained in the step (3) and 100 parts by weight of polypropylene are mixed in a high-speed mixer, mixed at room temperature, and then subjected to secondary extrusion and granulation, and the extrusion temperature is 220 ° C. After wate...

Embodiment 3

[0025] (1) 100 parts by weight of zinc oxide fillers with a size of 6500 meshes are first subjected to surface treatment with a titanate acid coupling agent; the amount of the titanate coupling agent is 1 part by weight;

[0026] (2) 100 parts by weight of modified zinc oxide filler and 25 parts by weight of maleic anhydride grafted polyolefin elastomer, 1.5 parts by weight of antioxidant 1010, 2.5 parts by weight of stearic acid are directly put into the high-speed mixer and carried out Initial mixing, mixing at room temperature;

[0027] (3) moving the mixture obtained in the step (2) into the twin-screw and kneading evenly, the extrusion temperature is 200 ° C, water-cooled granulation, and fully dried;

[0028] (4) The material obtained in the step (3) and 100 parts by weight of polypropylene are mixed in a high-speed mixer, mixed at room temperature, and then subjected to secondary extrusion and granulation, and the extrusion temperature is 220 ° C. After water cooling A...

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PUM

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Abstract

The invention relates to a polypropylene composite material and a preparation method thereof. The material is prepared from the raw materials of, by weight, 100 parts of polypropylene, 40-200 parts of a nano-grade heat conductive filling material, 10-50 parts of a grafted polyolefin elastomer compatibilizer, 0.5-5 parts of a coupling agent, 0.5-3 parts of an antioxidant, and 1-5 parts of a lubricant. According to the invention, the heat-conductive filling material is modified by using the coupling agent; the modified heat-conductive filling material is uniformly mixed with the compatibilizer, the antioxidant, and the lubricant according to the ratio; extrusion granulation is carried out, such that a cladding structure is formed; the cladding structure is subjected to mixing with polypropylene in a double-screw extruder, such that the polypropylene composite material is obtained. According to the invention, the nano-grade heat-conductive filling material and the grafted polyolefin elastomer are used for filling and modifying polypropylene resin. With a double-stage extrusion method, the heat-conductive filling material has good dispersion property and interface bonding property, such that heat conductivity and impact property of polypropylene are improved. Especially, low-temperature impact property of polypropylene is also substantially improved. The material and the method can be applied in the fields of floor heating, solar energy, chemical transportation, and the like.

Description

technical field [0001] The invention relates to the technical field of polymer composite material modification and processing technology, in particular to a polypropylene modified composite material and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin with a wide range of sources. It has the characteristics of low price, good mechanical properties, easy molding and processing, and corrosion resistance. However, polypropylene has a high glass transition temperature, which leads to its poor low-temperature impact resistance, and it is prone to brittle cracks when it is impacted in cold seasons; the disadvantage of low thermal conductivity makes its heat exchange rate slow; therefore, it cannot meet the needs of high-quality products in the fields of floor heating, solar energy, and chemical transportation. Contents of the invention [0003] The purpose of the present invention is to provide a polypropylene composite material ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/04C08K9/06C08K3/08C08K3/22C08K3/28C08K3/38C08K3/34
CPCB29C48/92B29C2948/9258B29C2948/92704C08K2201/011C08L23/12C08L2205/03C08L51/06C08K13/06C08K9/04C08K2003/2227C08K5/1345C08K5/09C08K2003/2296C08L91/00C08K9/06C08K2003/0812C08L91/06C08K2003/222C08K2003/282
Inventor 彭晓翊李白千秦小梅王军
Owner RIFENG ENTERPRISE GRP CO LTD
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