Polypropylene/ nickel plated glass fiber/ titanium dioxide composite material and preparation method thereof

A technology of titanium dioxide and glass fiber is applied in the field of polypropylene/nickel-plated glass fiber/titanium dioxide composite material and its preparation, which can solve the problems of high cost and low production efficiency of conductive polymer materials, achieve low cost and improve electromagnetic shielding efficiency. , the effect of good electrical conductivity and electromagnetic shielding performance

Active Publication Date: 2016-01-20
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low production efficiency and high cost of current conductive polymer materials, the pr...

Method used

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  • Polypropylene/ nickel plated glass fiber/ titanium dioxide composite material and preparation method thereof
  • Polypropylene/ nickel plated glass fiber/ titanium dioxide composite material and preparation method thereof
  • Polypropylene/ nickel plated glass fiber/ titanium dioxide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of polypropylene / nickel-plated glass fiber / titanium dioxide electromagnetic shielding functional composite material comprises the following steps:

[0017] (1) First raise the temperature of the torque rheometer to 200 ° C, add 38.5 g of polypropylene to it, banbury for 5 minutes, and rotate at 60 rpm to fully melt the polypropylene;

[0018] (2) Add 1.5g of nano-titanium dioxide to the torque rheometer, knead for 10min, and make the two uniformly mix;

[0019] (3) Add 10g nickel-plated glass fiber to the torque rheometer again, make the volume ratio of polypropylene and nickel-plated glass fiber and nano-titanium dioxide be 91.46:7.74:0.8 and mix 10min, obtain the evenly dispersed mixture;

[0020] (4) Hot pressing the mixture obtained in step (3) under the conditions of 190° C. and 10 MPa to obtain a polypropylene / nickel-plated glass fiber / titanium dioxide composite material.

Embodiment 2

[0022] The preparation method of polypropylene / nickel-plated glass fiber / titanium dioxide electromagnetic shielding functional composite material comprises the following steps:

[0023] (1) First raise the temperature of the torque rheometer to 200°C, add 36g of polypropylene to it, and banbury for 5 minutes at a speed of 60rpm to fully melt the polypropylene;

[0024] (2) Add 1.5g of nano-titanium dioxide to the torque rheometer, knead for 10min, and make the two uniformly mix;

[0025] (3) add 12.5g nickel-plated glass fibers in the torque rheometer again, make the volume ratio of polypropylene and nickel-plated glass fibers and nano-titanium dioxide be 89.10:10.10:0.8, mix 10min, obtain the homogeneously dispersed mixture;

[0026] (4) The mixture obtained in step (3) was hot-pressed at 190° C. and 10 MPa to obtain a polypropylene / nickel-plated glass fiber / titanium dioxide composite material with high electrical conductivity and electromagnetic shielding performance.

Embodiment 3

[0028] The preparation method of polypropylene / nickel-plated glass fiber / titanium dioxide electromagnetic shielding functional composite material comprises the following steps:

[0029] (1) First raise the temperature of the torque rheometer to 200 ° C, add 34.5 g of polypropylene to it, banbury for 5 minutes, and rotate at 60 rpm to fully melt the polypropylene;

[0030] (2) Add 1.5g of nano-titanium dioxide to the torque rheometer, knead for 10min, and make the two uniformly mix;

[0031] (3) add 14g nickel-plated glass fiber to the torque rheometer again, make the volume ratio of polypropylene and nickel-plated glass fiber and nano-titanium dioxide be 87.60:11.60:0.8, mix 10min, obtain the uniformly dispersed mixture;

[0032] (4) The mixture obtained in step (3) was hot-pressed at 190° C. and 10 MPa to obtain a polypropylene / nickel-plated glass fiber / titanium dioxide composite material with high electrical conductivity and electromagnetic shielding performance.

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Abstract

The invention relates to the field of polymer composite materials, in particular to a polypropylene/ nickel plated glass fiber/ titanium dioxide composite material and a preparation method thereof. The composite material is prepared from 85.0-92.0% of polypropylene, 7-14.0% of nickel plated glass fibers and 0.5-1.0vol% of titanium dioxide. According to the polypropylene/ nickel plated glass fiber/ titanium dioxide composite material, the titanium dioxide and the nickel plated glass fibers serve as binary filler for conducting functional improvement on polypropylene; the structural features that the glass fibers are large in length-diameter, and lap joint is easy to conduct are utilized, continuous distribution and network construction of a wrapping nickel layer in the polypropylene are achieved, a conductive path is formed under an extremely low metallic nickel content, and the electric conduction performance is provided for the polypropylene; meanwhile the characteristics of high dielectric constants and dipolar polarization effect of the titanium dioxide are utilized, nanometer TiO<2> particles are added to a polymer, electromagnetic waves are attenuated through the interfacial polarization action, and the electromagnetic shielding property of the composite material is improved.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a polypropylene / nickel-plated glass fiber / titanium dioxide composite material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the electronics industry, the problem of electromagnetic interference (EMI) has become increasingly serious. Electromagnetic wave interference not only affects precision electronic equipment, but also has great harm to human health. Therefore, the development of efficient electromagnetic shielding materials to solve the problem of electromagnetic interference has received widespread attention. Although traditional electromagnetic shielding materials, such as metals and their composite materials, have good electromagnetic shielding performance, they have problems such as heavy weight, low production efficiency and high cost, so they cannot be used in some special occasions. Compared w...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/10C08K9/02C08K7/14C08K3/22
CPCC08K3/22C08K7/14C08K9/02C08K9/10C08K2003/2237C08K2201/011C08L23/12
Inventor 刘亚青杨雅琦段宏基赵贵哲
Owner ZHONGBEI UNIV
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