Long and short glass fiber hybrid reinforced polypropylene base station antenna outer cover composite material and preparation method thereof

A polypropylene base station, long glass fiber technology, applied in the direction of the radiation unit cover, etc., can solve the problem of being unsuitable for extrusion molding process, and achieve the effect of low dielectric constant, high dielectric loss tangent, and good mechanical properties

Active Publication Date: 2022-04-12
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, short or long glass fiber reinforced polypropylene composites, especially polypropylene with high melt flow rate in the formulation of long glass fiber reinforced polypropylene composites, are not suitable for extrusion molding commonly used for base station antenna housing profiles craft

Method used

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  • Long and short glass fiber hybrid reinforced polypropylene base station antenna outer cover composite material and preparation method thereof
  • Long and short glass fiber hybrid reinforced polypropylene base station antenna outer cover composite material and preparation method thereof
  • Long and short glass fiber hybrid reinforced polypropylene base station antenna outer cover composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Raw material formula (mass ratio, parts): low dielectric properties long glass fiber reinforced polypropylene (fiber content 70%) 20, block copolymerized polypropylene resin (load 2.16kg, MFR=0.4g / 10min at a temperature of 230°C) 45 , polyolefin thermoplastic elastomer (octene content 55%, load 2.16kg, temperature 190°C when MFR=0.2g / 10min) 10, functionalized polypropylene (maleic anhydride content 1.0%, load 2.16kg, temperature 230°C MFR=5g / 10min)3, low dielectric properties chopped glass fiber 16, rutile titanium dioxide 3, ultraviolet light absorber UV 326 0.6, hindered amine light stabilizer C944 1.0, antioxidant B215 0.6, zinc stearate 0.3 , Interacid amide 0.2, ethylene bis stearic acid amide 0.3.

[0036] Preparation Process:

[0037] Mixing and granulation of functionalized polypropylene and antioxidant: First, mix functionalized polypropylene and antioxidant B215 uniformly in a high-speed mixer at room temperature according to the formula, and then blend in a ...

Embodiment 2

[0042] Raw material formula (mass ratio, parts): low dielectric properties long glass fiber reinforced polypropylene (fiber content 70%) 20, block copolymerized polypropylene resin (load 2.16kg, MFR=0.3g / 10min at 230°C) 42 , polyolefin thermoplastic elastomer (octene content 60%, load 2.16kg, temperature 190 ℃ MFR = 0.5g / 10min) 10, functionalized polypropylene (maleic anhydride content 0.8%, load 2.16kg, temperature 230 ℃ MFR=10g / 10min)3, low dielectric properties chopped glass fiber 19, rutile titanium dioxide 3, ultraviolet light absorber UV 326 0.6, hindered amine light stabilizer C944 1.0, antioxidant B215 0.6, zinc stearate 0.8 .

[0043] Preparation Process:

[0044] Mixing and granulation of functionalized polypropylene and antioxidant: First, mix functionalized polypropylene and antioxidant B215 uniformly in a high-speed mixer at room temperature according to the formula, and then blend in a twin-screw extruder at 170-200°C The pelletizer yields functionalized polypr...

Embodiment 3

[0049] Raw material formula (mass ratio, parts): low dielectric properties long glass fiber reinforced polypropylene (fiber content 60%) 30, block copolymer polypropylene resin (load 2.16kg, MFR=0.5g / 10min at a temperature of 230°C) 35 , polyolefin thermoplastic elastomer (octene content 60%, load 2.16kg, temperature 190°C MFR = 1.0g / 10min) 8, functionalized polypropylene (maleic anhydride content 0.5%, load 2.16kg, temperature 230°C MFR=8g / 10min)4, low dielectric properties chopped glass fiber 17, rutile titanium dioxide 3, ultraviolet light absorber UV 326 0.6, hindered amine light stabilizer C944 1.0, antioxidant B215 0.6, zinc stearate 0.3 , Interacid amide 0.5.

[0050] Preparation Process:

[0051] Mixing and granulation of functionalized polypropylene and antioxidant: First, mix functionalized polypropylene and antioxidant B215 uniformly in a high-speed mixer at room temperature according to the formula, and then blend in a twin-screw extruder at 170-200°C The pelleti...

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Abstract

The invention discloses a long and short glass fiber hybrid reinforced polypropylene base station antenna housing composite material. The composite material has good mechanical properties, weather aging resistance, low dielectric constant and dielectric loss tangent value, is environment-friendly and is easy to extrude, process and mold. The invention discloses a long and short glass fiber hybrid reinforced polypropylene base station antenna outer cover composite material. The long glass fiber reinforced polypropylene composite material is prepared from the following raw materials in parts by mass: 20-30 parts of a long glass fiber reinforced polypropylene composite material, 26-45 parts of block co-polypropylene, 8-12 parts of a polyolefin thermoplastic elastomer, 16-25 parts of chopped glass fiber, 3-5 parts of functionalized polypropylene, 2-4 parts of rutile titanium dioxide, 0.4-0.8 part of an ultraviolet light absorber, 0.5-1.5 parts of a hindered amine light stabilizer, 0.4-0.8 part of an antioxidant and 0.6-1 part of a lubricant.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a long and short glass fiber hybrid reinforced polypropylene base station antenna cover composite material and a preparation method thereof. Background technique [0002] In recent years, the "Internet +" economy such as smart communication, smart home, smart logistics, and automatic driving has risen rapidly. Taking mobile communication as an example, more than 5 billion people around the world use smart phones, accounting for about 70% of the global population. It is estimated that by 2025, 80% of the world's Internet connection will be carried out through smart phones. The base station antenna is an important part of the mobile communication wireless access system. The base station antenna is used to convert the radio frequency power fed by the transmitter into electromagnetic wave energy, or convert the electromagnetic wave energy into radio frequency p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04C08L23/14C08L23/12C08L23/20C08L51/06C08K5/134C08K5/526C08K7/14C08K13/04H01Q1/42
Inventor 张军杨帆包建宁陈浩柴瑞丹钱建培黄安倪桓李峰张亚文
Owner NANJING UNIV OF TECH
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