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Functionalized boron nitride nanosheet/polypropylene composite material and preparation method thereof

A composite material and boron nitride technology, applied in the field of functionalized boron nitride nanosheet/polypropylene composite material and its preparation, can solve the problems of affecting the filling and dispersing effect of BN nanosheets, easy agglomeration and high surface energy, and achieve improvement Mechanical strength, avoid aging, improve the effect of mechanical properties

Inactive Publication Date: 2016-04-06
GUANGDONG WAYLAM ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high surface energy of BN nanosheets, it is easy to agglomerate, which affects the actual filling and dispersion effect of BN nanosheets.

Method used

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  • Functionalized boron nitride nanosheet/polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0014] The weight percentage of each component is: 70 parts of homopolymerized or copolymerized polypropylene, 0 parts of functionalized boron nitride nanosheet BN-LCP, 15 parts of alkali-free glass fiber yarn, 5 parts of grafted PP, 10 parts of barium sulfate, and 0.15 parts of antioxidant parts, 0.3 parts of other additives; the materials according to the above weight percentages are added to a high-speed mixer and mixed evenly; the mixed materials enter the extruder, and are extruded by a twin-screw extruder with a melting temperature of 180-230 ° C. After cooling, cutting Granulation, sieving, and packaging to obtain unmodified polypropylene composite material A.

Embodiment B

[0016] The weight percentage of each component is: 65 parts of homopolymerized or copolymerized polypropylene, 5 parts of functionalized boron nitride nanosheet BN-LCP, 15 parts of alkali-free glass fiber yarn, 5 parts of grafted PP, 10 parts of barium sulfate, and 0.15 parts of antioxidant parts, 0.3 parts of other additives; the materials according to the above weight percentages are added to a high-speed mixer and mixed evenly; the mixed materials enter the extruder, and are extruded by a twin-screw extruder with a melting temperature of 180-230 ° C. After cooling, cutting Granulation, sieving, and packaging to obtain the functionalized boron nitride nanosheet / polypropylene composite material B.

Embodiment C

[0018] The weight percentage of each component is: 60 parts of homopolymerized or copolymerized polypropylene, 10 parts of functionalized boron nitride nanosheet BN-LCP, 15 parts of alkali-free glass fiber yarn, 5 parts of grafted PP, 10 parts of barium sulfate, and 0.15 parts of antioxidant parts, 0.3 parts of other additives; the materials according to the above weight percentages are added to a high-speed mixer and mixed evenly; the mixed materials enter the extruder, and are extruded by a twin-screw extruder with a melting temperature of 180-230 ° C. After cooling, cutting Granulation, sieving, and packaging to obtain functionalized boron nitride nanosheet / polypropylene composite material C.

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Abstract

The invention provides a functionalized boron nitride nanosheet / polypropylene composite material. The composite material comprises the following components in parts by weight: 50-70 parts of polypropylene, 5-20 parts of a functionalized boron nitride nanosheet, 5-15 parts of an alkali-free glass fiber yarn, 0-5 parts of grafted PP, 5-10 parts of barium sulfate, 0.1-0.5 part of an antioxidant and 0.1-1 part of other aids. The invention further provides a preparation method of the functionalized boron nitride nanosheet / polypropylene composite material. By virtue of pi-pi action stacked functionalization modification, the surface energy and the surface polarity of a BN nanosheet can be decreased, the dispersion degree of the BN nanosheet in a polypropylene resin matrix can be improved, and therefore, the agglomeration phenomenon is reduced; by decreasing two-phase interfacial tension, the wettability, the consistency and the bonding force between the BN nanosheet and polypropylene resin are improved, and therefore, the mechanical strength of the composite material is improved.

Description

Technical field: [0001] The invention relates to a functionalized boron nitride nanosheet / polypropylene composite material and a preparation method thereof, belonging to the technical field of modified polypropylene composite materials. Background technique: [0002] Polypropylene (PP) material, as a general-purpose plastic with low price and good rigidity, has been continuously expanded in use, and currently occupies a certain seat in the field of daily food packaging. However, its low heat distortion temperature, low-temperature brittleness and other shortcomings restrict its application as an engineering stress material. In order to broaden its application range, polypropylene must be modified. Common modification methods such as chlorinated polypropylene, polypropylene graft modification, polypropylene cross-linking modification, polypropylene filling blending, etc. In recent years, there have been many researches on the blending and modification of polypropylene filled...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08L51/06C08K13/06C08K9/04C08K7/00C08K7/14C08K3/30
CPCC08L23/12C08K2201/011C08L53/00C08L2201/08C08L2205/03C08L2205/24C08L51/06C08K13/06C08K9/04C08K7/00C08K7/14C08K2003/3045
Inventor 袁正凯皮正亮葛嘉宝王琦
Owner GUANGDONG WAYLAM ENG PLASTICS
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