Environment-friendly modified polypropylene profiled bar base station antenna casing and preparation method

An environment-friendly, base station antenna technology, applied in the field of special-shaped material housing and its preparation, can solve the problems of poor weather resistance and aging resistance, achieve low dielectric loss tangent, balance rigidity, and improve the effect of UV resistance

Active Publication Date: 2013-06-05
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, aiming at the shortcomings of PP's easy degradation, poor heat resistance and weather resistance, the present invention uses antioxidants, hindered amine light stabilizers, ultraviolet light absorbers, ultraviolet light shielding agents, and supplemented by special structural inorganic Filler, the PP profile base station antenna cover not only has good mechanical properties, but also greatly improves the UV resistance

Method used

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  • Environment-friendly modified polypropylene profiled bar base station antenna casing and preparation method
  • Environment-friendly modified polypropylene profiled bar base station antenna casing and preparation method
  • Environment-friendly modified polypropylene profiled bar base station antenna casing and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Raw material formula: homopolypropylene (melt flow rate measured at 230°C×2160g=0.8g / 10min) 35, random copolymerized polypropylene (melt flow rate measured at 230°C×2160g=0.5g / 10min) 65, Stearic acid 0.1, calcium stearate 0.1, ultraviolet absorber UV 531 0.5, antioxidant 1010 0.3, hindered amine light stabilizer C944 0.3, rutile TiO 2 10. Surface modification of CaCO 3 20. Nucleating agent NAA325 0.2.

[0038] Preparation Process:

[0039] ① Pre-dispersion of functional additives: Put 10 parts of random copolymerized PP resin powder and all lubricants, ultraviolet light absorbers, antioxidants, hindered amine light stabilizers, and rigid nucleating agents into the high-speed mixer And other functional additives, control the speed of the mixer at a low speed below 500rpm and stir for 3 minutes at a material temperature of about 40°C to discharge to the silo.

[0040] ②Surface modification of inorganic fillers: First, add 100 kg of CaCO to a high-speed mixer with tem...

Embodiment 2

[0046] Raw material formula: homopolypropylene (melt flow rate measured at 230°C×2160g=0.3g / 10min) 60, random copolymerized polypropylene (melt flow rate measured at 230°C×2160g=0.3g / 10min) 40, Zinc stearate 0.1, oleic acid amide 0.1, ultraviolet absorber UV 326 0.5, antioxidant B215 0.2, hindered amine light stabilizer T770 0.2, rutile TiO 2 5. Surface modified mica 25, nucleating agent NAP-71 0.1.

[0047] Preparation Process:

[0048] ① Pre-dispersion of functional additives: Put 10 parts of homopolymer PP resin powder in the formula and all lubricants, ultraviolet light absorbers, antioxidants, hindered amine light stabilizers, rigid nucleating agents, etc. into the high-speed mixer Functional additives, control the speed of the mixer at a low speed below 500rpm, stir for 6 minutes, and discharge to the silo at a material temperature of about 40°C.

[0049] ②Surface modification of inorganic fillers: First, add 100 kg of mica to a high-speed mixer at a temperature contr...

Embodiment 3

[0055] Raw material formula: random copolymerized polypropylene (melt flow rate measured at 230°C×2160g=0.5g / 10min) 30, block copolymerized polypropylene (melt flow rate measured at 230°C×2160g=0.5g / 10min) 70 , zinc stearate 0.2, magnesium stearate 0.3, UV absorber UV 326 0.3, UV absorber UV 531 0.2, antioxidant 168 0.2, antioxidant 1010 0.2, hindered amine light stabilizer T770 0.1, Hindered amine light stabilizer HS-765 0.1, rutile TiO 2 15, surface modified talc powder 5, surface modified attapulgite 15, nucleating agent NAP-71 0.1, nucleating agent NAA325 0.1.

[0056] Preparation Process:

[0057] ① Pre-dispersion of functional additives: Put 10 parts of block copolymerized PP resin powder and all lubricants, ultraviolet light absorbers, antioxidants, hindered amine light stabilizers, and rigid nucleating agents into the high-speed mixer And other functional additives, control the speed of the mixer at a low speed below 500rpm and stir for 5min at a material temperatur...

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Abstract

The invention discloses an environment-friendly modified polypropylene profiled bar base station antenna casing, which satisfies the required strength, modulus and hear resistance requirements of the base station antenna housing profiled bar, and more importantly, the melt-strength improvement can reach extrusion moulding treatment requirement of the complex section structural profile bar. The PP profile bar base station antenna casing has good machinery performance and greatly enhances the ultraviolet light resistant performance. The modified polypropylene profiled bar base station antenna casing comprises the following raw materials by mass: 100 parts of low melt flow rate polypropylene resin, 0.2-2 parts of lubricant, 0.1-1.0 parts of ultraviolet light absorbent, 0.2-0.5 parts of anti-oxidant, 0-0.8 parts of hindered amine light stabilizer, 5-20 parts of surface modified titanium dioxide, 5-30 parts of surface modified inorganic filling material and 0.1-0.5 parts of rigid nucleating agent.

Description

technical field [0001] The invention relates to a special-shaped material outer cover and a preparation method thereof, and more specifically relates to an environment-friendly modified polypropylene special-shaped material base station antenna cover and a preparation method thereof. Background technique [0002] Communication technology is changing with each passing day, bringing people a lot of convenience and enjoyment. For example, with the rapid development of mobile network and communication industry, mobile network and telephone provide more and more convenience and speed for people's work and life. With the development of data communication and multimedia service requirements, the fourth generation mobile communication (4G) that adapts to the needs of mobile data, mobile computing and mobile multimedia operations has begun to emerge. Therefore, this fourth generation mobile communication technology brings people a better future. future. Compared with previous mobile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L53/00C08K13/06C08K9/10C08K9/02C08K3/22B29C47/92B29C48/92
CPCB29C48/385B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 张军王沈巍徐国忠陈浩柴瑞丹黄安刘涛郝丽媛
Owner NANJING UNIV OF TECH
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