Polypropylene composite material and preparation method thereof

A technology of composite materials and polypropylene, applied in the field of polypropylene composite materials and its preparation, can solve problems such as unsatisfactory performance and unfavorable wave penetration, and achieve the effects of improving strength, expanding material application fields, and low dielectric constant

Active Publication Date: 2021-04-16
WUHAN JINFA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional 5G radome materials are mainly glass fiber reinforced polypropylene, glass fiber reinforced polycarbonate, and FRP. These materials have a limited dielectric constant, which is not conducive to wave transmission, and their performance is not ideal.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of polypropylene composite material comprises the following steps:

[0025] By weight, weigh 21 parts of high fluidity copolymerized polypropylene resin A; its melt index characteristic value is 90g / 10min;

[0026] 28.5 parts of high fluidity copolymerized polypropylene resin B; its melt index characteristic value is 55g / 10min;

[0027] 21 parts of high-impact copolymerized polypropylene resin C; its characteristic value is 60kJ / ㎡ of notched impact strength at room temperature.

[0028] 5 parts of toughening agent have a melt flow index of 10g / 10min and a density of 0.85g / cm 3 ethylene octene copolymer;

[0029] 20 parts of aluminum titanate whiskers; the whiskers are 0.4 μm in diameter and 16 μm in length;

[0030] The antioxidant SONOX 1010 of 0.4 part and antioxidant SONOX 168; The mass ratio of described antioxidant SONOX 1010 and antioxidant SONOX 168 is 1:2;

[0031] 0.1 part of ethyl bis stearamide EBS;

[0032] 0.3 parts of epoxy resi...

Embodiment 2

[0037] The preparation method of polypropylene composite material comprises the following steps:

[0038] By weight, weigh 21 parts of high fluidity copolymerized polypropylene resin A; its melt index characteristic value is 100g / 10min;

[0039] 28.5 parts of high fluidity copolymerized polypropylene resin B; its melt index characteristic value is 60g / 10min;

[0040] 21 parts of high-impact copolymerized polypropylene resin C; its characteristic value is 40kJ / ㎡ of notched impact strength at room temperature.

[0041] 5 parts of toughening agent have a melt flow index of 15g / 10min and a density of 0.9g / cm 3 ethylene butene copolymer;

[0042] 20 parts of sodium titanate whiskers, the whiskers are 0.6 μm in diameter and 20 μm in length;

[0043] The antioxidant SONOX 168 of 0.4 part and antioxidant SONOX 1076, the mass ratio of described antioxidant SONOX 168 and antioxidant SONOX 1076 is 1:3;

[0044] 0.1 part of STRUKTOL TR451;

[0045] 0.3 parts light stabilizer is T-81....

Embodiment 3

[0050] The preparation method of polypropylene composite material comprises the following steps:

[0051] By weight, weigh 21 parts of high fluidity copolymerized polypropylene resin A; its melt index characteristic value is 80g / 10min;

[0052]28.5 parts of high fluidity copolymerized polypropylene resin B; its melt index characteristic value is 50g / 10min;

[0053] 21 parts of high-impact copolymerized polypropylene resin C; its characteristic value is 50kJ / ㎡ of notched impact strength at room temperature.

[0054] The 5 parts of toughening agent have a melt flow index of 0.5g / 10min and a density of 0.8g / cm 3 The ethylene octene copolymer and ethylene butene copolymer; Wherein the mass ratio of ethylene octene copolymer and ethylene butene copolymer is 1:1;

[0055] 20 parts of potassium titanate whiskers, the whiskers are 0.1 μm in diameter and 3 μm in length;

[0056] The antioxidant SONOX 168 of 0.4 part and antioxidant DLTDP, the mass ratio of described antioxidant SONO...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps: mixing high-fluidity co-polypropylene resin A, high-fluidity co-polypropylene resin B, high-impact co-polypropylene resin C, a toughening agent, titanate whiskers, an antioxidant and a lubricant according to a special ratio. The preparation method includes steps of: mixing, melting, homogenization and extrusive granulation to obtain the polypropylene composite material. By doping the titanate whiskers, the strength of the polypropylene composite material is remarkably improved, and the polypropylene composite material has a relatively low dielectric constant and can meet the requirements of multimedia transmission and high communication quality of fourth-generation mobile communication.

Description

technical field [0001] The invention belongs to the technical field of polymer materials. More specifically, it relates to a polypropylene composite material and a preparation method thereof. Background technique [0002] Radome is the part with the largest amount of plastic in 5G base stations. Due to the characteristics of 5G communication and increasingly stringent environmental protection requirements, low dielectric, low loss, light weight, good dimensional stability, environmental protection and excellent impact resistance have become radome materials. material selection standards. Polypropylene has the characteristics of low density, excellent mechanical properties and low dielectric constant. At the same time, it is cheap and has a very high cost performance. Titanate whisker is a research hotspot in recent years. It has the characteristics of light weight, excellent single crystal, high strength, good rigidity, and excellent aspect ratio. It is widely used in plas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K7/08
Inventor 陈瑶罗宇付伟何浏炜吴国峰程文超赖昂陈胜杰
Owner WUHAN JINFA TECH CO LTD
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