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Multifunctional polypropylene composite material and preparation method thereof

A composite material and multifunctional technology, which is applied in the field of multifunctional polypropylene composite materials and its preparation, can solve the problems of not being able to be used as engineering plastics, low low-temperature impact strength, poor flame retardancy, etc., and achieve excellent insulation performance and thermal conductivity. , excellent thermal conductivity, and the effect of ensuring flame retardant performance

Active Publication Date: 2015-05-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has defects such as low low-temperature impact strength, poor heat resistance, and poor flame retardancy. When adding halogen-containing flame retardants, it will release toxic gases.
Therefore, in application, especially as a structural material, it is greatly restricted and cannot be used as a high-performance engineering plastic.

Method used

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  • Multifunctional polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Dilute the titanate coupling agent with absolute ethanol at a ratio of 1:1. Under the condition of high-speed stirring, spray the diluted coupling agent on the surface of the magnesium hydroxide filler in the form of mist, keep stirring for 10 minutes, then put it in an oven to dry off the solvent, and cool it for later use;

[0040] (2) Ultrasonicize the graphene nanosheets for 30 minutes, dry and cool for later use;

[0041] (3) Weigh 300g of dried polypropylene pellets, 670g of magnesium hydroxide, 30g of nanographene microflakes, 10g of antioxidant 1010 / 168 (according to the ratio of 1:1), add 5ml of liquid paraffin, and place Mix well in a high-speed mixer;

[0042] (4) Put the pre-mixed uniform material into a twin-screw extruder with an aspect ratio of 25, melt and knead at a temperature of 195 / 200 / 210 / 210 / 205°C, extrude and granulate, and control the screw speed at 62r during the process / min. After the pellets are dried, they are injection molded into te...

Embodiment 2

[0044] The implementation method is the same as in Example 1, changing the magnesium hydroxide to 640g, changing the nano-graphene microsheets to 60g, and changing other components and quality into constant. The performance test results of the obtained composite materials are shown in Table 1.

Embodiment 3

[0046] The implementation method is the same as in Example 1, changing the magnesium hydroxide to 610g, changing the nano-graphene microsheets to 90g, and changing other components and quality into constant. The performance test results of the obtained composite materials are shown in Table 1.

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Abstract

The invention relates to a multifunctional polypropylene composite material and a preparation method thereof. The composite material is prepared from a thermoplastic polypropylene resin matrix, inorganic particles, thermal conducting fillers or a halogen-free flame retardant, carbon-based thermal conducting fillers, toughening fillers and other processing additives, the highest heat conductivity coefficient of the composite material is larger than 5.0 W / m.K, the insulating property is excellent, the vertical flammability is UL94 V-0, and the mechanical properties are excellent. The operation is simple, the cost is low, the multifunctional composite material with excellent comprehensive performance can be prepared in one step, industrialized production is easy to achieve, and the multifunctional polypropylene composite material can be widely used in such fields as heat exchangers, instrument shells, circuit components, automobiles, chemical energy and aviation, etc.

Description

technical field [0001] The invention belongs to the field of polymer composite material preparation, and in particular relates to a multifunctional polypropylene composite material and a preparation method thereof. The invention has wide sources of raw materials, low cost and simple and easy preparation route. The prepared composite material also has excellent thermal conductivity, insulation performance, flame retardancy and mechanical properties, and can be widely used in heat exchangers, instrument casings, circuit components, automobiles, chemical energy, aerospace and other fields. Background technique [0002] Polymer-based composites have been widely used due to their light weight, easy processing, wear resistance, simple preparation, and easy industrialization. However, the thermal conductivity of most polymer materials is extremely low. If a certain thermal conductivity is endowed to polymer materials, the application fields of polymer materials can be greatly expa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L55/02C08L23/16C08L9/06C08L25/10C08K13/06C08K9/04C08K9/06C08K3/04C08K3/22C08K3/28C08K3/34C08K7/24C08K7/06
CPCC08K2201/011C08L23/14C08L2201/02C08L2201/22C08L2205/02C08L2205/03C08L91/06C08K13/06C08K9/04C08K2003/2224C08K3/04C08K5/1345C08K5/526C08L23/0815
Inventor 于中振高山张好斌李晓锋
Owner BEIJING UNIV OF CHEM TECH
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