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Polymer composite material and preparation method of filter cavity

A technology of composite materials and polymer matrix, which is applied in the field of preparation of polymer composite materials and filter cavities, can solve the problems that it is difficult to effectively control the surface roughness of the product, and the product is difficult to meet the requirements of the communication industry, so as to achieve light weight Quantification, density reduction, and cost reduction

Pending Publication Date: 2020-06-09
江苏宝利金材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is currently difficult to effectively control the roughness of the product surface. At the same time, the combination between the polymer matrix and the metal layer is still a simple physical combination, and the obtained products are difficult to meet the requirements of the communication industry.

Method used

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  • Polymer composite material and preparation method of filter cavity
  • Polymer composite material and preparation method of filter cavity

Examples

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preparation example Construction

[0037] A method for preparing a cavity of a polymer composite material based on the above polymer composite material, comprising the following steps:

[0038] (1) Processing the polymer composite material into a cavity body through a molding process; wherein, the mass content of the reinforcing material in the cavity body is 5-85 wt %;

[0039] The composite material includes a polymer matrix and a reinforcing material in terms of mass percentage, the reinforcing material has a mass content of 5 to 85 wt%, and the reinforcing material is uniformly dispersed in the polymer matrix;

[0040] The molding process is one or more combinations of injection molding, extrusion, powder metallurgy, turning, molding and grinding.

[0041] (2) The cavity embryo body is subjected to a surface activation treatment process to make it have good surface roughness and surface activity; see figure 2 .

[0042] Among them, the surface activation process is divided into two parts. First, the coat...

Embodiment 1

[0050] The filter cavity is prepared by using glass fiber reinforced polyetherimide (PEI) as a polymer composite material, wherein the glass fiber reinforced polyetherimide (PEI) is a polymer composite material including a polymer matrix and a reinforcing material; The molecular matrix is ​​polyetherimide, with a mass content of 55%; the reinforcing material is a mixture of glass fiber and mineral powder, with a mass content of 45%, and the thermal expansion coefficient of the composite material is 25×10 -6 / °C.

[0051] The PEI composite material is injection-molded into a cavity blank of the polymer composite material, and is ready for use after deburring treatment.

[0052] Dissolve PEI in N-methylpyrrolidone under heating conditions, and add metal silver powder and surfactant (OP emulsifier) ​​with a particle size of 15 microns (D 90) to it, and make it after fully stirring evenly PEI coatings containing metallic silver particles.

[0053] The PEI paint containing metall...

Embodiment 2

[0057] The filter cavity is prepared with glass fiber reinforced polyphenylene sulfide (PPS) as a polymer composite material, wherein the polymer matrix is ​​polyphenylene sulfide, and its content is 65%; the reinforcement material is carbon fiber and mineral powder, and its mass The content is 35%, and the thermal expansion coefficient of the composite material is 18×10 -6 / °C.

[0058] The PPS composite material is injection-molded into a cavity blank of a polymer composite material, and is ready for use after deburring treatment.

[0059] Dissolve PPS powder in sulfolane under heating conditions, and add metal copper powder and surfactant (OP emulsifier) ​​with a particle size of 18 microns (D 90) to it, and make it after thorough stirring. into paint.

[0060] The PPS paint containing metallic silver particles is evenly sprayed on the surface of the polymer cavity, and the thickness of the coating is controlled to be 15 microns.

[0061] The sprayed polymer cavity compo...

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Abstract

A polymer composite material and a preparation method of a filter cavity are mainly characterized in that a main body of the cavity is made of a polymer material, a part of reinforcing material is dispersed in the main body, and a metal layer is combined on the surface of the cavity. The thermal expansion coefficient of a base material can be controllably adjusted within the range of 5-40*10<-6> / DEG C by adjusting the relative proportion of macromolecules to the reinforcing material in the main body material. The main body material is molded into a cavity blank through injection molding, extrusion, powder metallurgy / turning, mold pressing, polishing and related processes, then the size of the cavity blank is stabilized through a proper post-treatment process, and finally the surface of thecavity is combined with a metal layer with good performance through a surface metallization process. The polymer composite cavity has the advantages of being small in density, low in thermal expansion coefficient, simple in process, stable in performance, low in cost and the like, and can be used in filters, duplexers, combiners, power dividers, antennas and related mobile communication core equipment.

Description

technical field [0001] The invention relates to the field of mobile communications, in particular to a polymer composite material and a method for preparing a filter cavity. Background technique [0002] With the popularization of 4G network, the construction of 5G network and the rapid development of big data, the spectrum used by communication equipment under the new standard is gradually developing to high frequency. In the high-frequency state, the wave penetration is poor, the attenuation is large, and the coverage ability is greatly weakened, which leads to a large number of small base stations becoming a new trend in the 5G era. Specifically, on the one hand, the reliability of communication equipment is required to be higher and higher, and on the other hand, the weight, volume, and cost are required to be smaller and smaller. This development trend requires the use of new methods or new materials in the manufacturing process of base station equipment. [0003] At p...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08L81/02C08L27/18C08L77/00C08L61/16C08L81/06C08L69/00C08L67/00C08K7/14C08K7/04C08J5/04C08J7/04C09D179/08C09D181/02C09D127/18C09D177/00C09D161/16C09D181/06C09D169/00C09D167/00C09D7/61C23C28/02H01P1/207H01P11/00
CPCC08J5/043C08J5/04C23C28/023C23C28/025H01P1/207H01P11/002C08J2379/08C08J2381/02C08J2327/18C08J2377/00C08J2361/16C08J2381/06C08J2369/00C08J2367/00C08K7/14C08K7/04C08J2479/08C08J2481/02C08J2427/18C08J2477/00C08J2461/16C08J2481/06C08J2469/00C08J2467/00C08K2003/0806C08K2003/0862C08K2003/085C08J5/0405
Inventor 王晓燕陈铿
Owner 江苏宝利金材科技有限公司
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