Polypropylene-nylon 6 alloy micro-foamed wave-absorbing material and preparation method thereof

Abstract

The invention discloses a polypropylene-nylon 6 alloy micro-foamed wave-absorbing material. The material comprises the following raw materials in percentage by weight: 96-99% of a polypropylene-nylon6 composite material, with the balance being a chemical foaming agent. The polypropylene-nylon 6 composite material comprises the following raw materials in parts by weight: 40 to 80 parts of polypropylene, 5 to 30 parts of nylon 6, 2 to 10 parts of polycrystalline metal fibers, 1 to 15 parts of a compatilizer, 0.4 to 2 parts of an antioxidant, 0.5 to 1 part of a lubricant and 0 to 2 parts of other auxiliary agents. The invention further discloses a preparation method of the polypropylene-nylon 6 alloy micro-foamed wave-absorbing material. According to the invention, the material is made intoa foamed state, and according to the principle of the Faraday cage, electromagnetic waves are not easy to penetrate, so a good wave absorbing effect is formed; the light weight of the material is realized while the electromagnetic wave absorbing function of the material is improved; and the material has excellent mechanical properties and can meet the industrial demands of the current market.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene-nylon 6 alloy micro-foaming wave-absorbing material and a preparation method thereof. Background technique [0002] A wave-absorbing material is a functional conversion material that can effectively absorb electromagnetic waves, and achieve energy conversion by converting electromagnetic wave energy into heat energy, or causing electromagnetic waves to be lost through interference or scattering. Absorbing materials can be divided into three categories: resistive type, dielectric type and magnetic medium type. Silicon carbide, graphite, etc. are resistive wave-absorbing materials, and the electromagnetic energy is mainly attenuated on the material resistance; barium titanate is a dielectric type wave-absorbing material, and its mechanism is the dielectric polarization relaxation loss; The loss mechanism is mainly attributed to ferromagnetic resonance abs...

AI Technical Summary

Problems solved by technology

[0003] Polypropylene and nylon 6 materials are currently widely used polymer materials; polypropylene has many characteristics such as light weight, not easy to absorb water, and high cost performance. It is currently the most widely used plastic, but pure polypropylene has low strength and poor dimensional stability. , It is not easy to use in many fields; Nylon 6 has the advantages of high mechanical strength, heat resistance, wear resistance, etc., and has better polarity, but the disadvantage is that it is easy to absorb water, resulting in poor dimensional stability; Blending of various materials to prepare alloy plastics can eliminate or improve the defects of a single material, so as to better exert their respective advantages and properties

[0004] Many of the current absorbing materials do not comprehensively consider factors such as absorbing function, density and mechanical properties, resulting in low comprehensive performance.

Images