Radiation crosslinked polyethylene foam as well as preparation method and application thereof

Abstract

The invention discloses radiation crosslinked polyethylene foam as well as a preparation method and application thereof. The radiation cross-linked polyethylene foam is mainly prepared from low-density polyethylene, azodicarbonamide, conductive powder, a foaming aid and a compatilizer as raw materials through mixing granulation, extrusion molding, radiation cross-linking and foaming, and the weight ratio of the conductive powder to the foaming aid to the compatilizer is (8-10): (0.3-1): (1-5). The problems that in the prior art, a radiation cross-linked polyethylene foam product with the electromagnetic shielding function and the wave absorbing function causes large pollution to the environment, and the technical problems of complex process, low production efficiency, high process cost, high foam foaming density and poor electromagnetic shielding performance and wave-absorbing performance of foam products are solved, and the radiation crosslinked polyethylene foam products are better in wave-absorbing performance, better in electromagnetic shielding performance, more environment-friendly, higher in production efficiency and lower in foaming density.

Description

technical field [0001] The invention relates to the technical field of foam, in particular to radiation cross-linked polyethylene foam and its preparation method and application. Background technique [0002] With the development of modern science and technology, electronics, electricity and communication technologies have been widely used, but the operation of electronic and electrical equipment will produce electromagnetic radiation of various frequencies. While people are getting convenience in their daily life, they are also suffering from more and more serious health threats. In order to reduce and avoid the harm caused by electromagnetic radiation to the human body, the demand for electromagnetic shielding materials is increasing. At present, the electromagnetic shielding materials on the market are mainly metal materials. This electromagnetic shielding material has high quality, high cost, and does not have the function of cushioning and shock absorption. [0003] R...

AI Technical Summary

Problems solved by technology

[0007] In order to make up for the defects of the prior art, the present invention provides radiation cross-linked polyethylene foam and its preparation method and application, which solves the environmental problems caused by the radiation cross-linked polyethylene foam products with electromagnetic shielding function and wave absorption function in the prior art. The pollution is relatively large, the process is complicated, the production efficiency is low, the process cost is high, the foaming density of the foam is high, the electromagnetic shielding performance and the wave absorption performance of the foam product need to be improved, and the radiation cross-linked polyethylene foam has been realized. The product has better microwave absorption performance, better electromagnetic shielding performance, more environmental protection, higher production efficiency, and lower foaming density