Low-dielectric-constant POM plate and preparation method thereof

Abstract

The invention discloses a low-dielectric-constant POM plate, and relates to the field of engineering plastics. The low-dielectric-constant POM plate is composed of the following components: POM resin,silicon oxide, polypropylene resin plastic, calcium carbonate, a silane coupling agent, and an EVA copolymer. The preparation method comprises the following steps: 1, weighing the materials of the components in percentage by mass for later use; 2, uniformly stirring silicon oxide, calcium carbonate, the silane coupling agent, POM resin, polypropylene resin and the EVA copolymer; the 3, discharging the uniformly stirred materials, pouring the materials into a constant-temperature drying box for drying, pouring the dried materials into a double-screw extrusion granulator for extrusion and water-cooling granulation, and inputting the granulated materials into a single-screw extruder for manufacturing and molding to obtain a plate. The low-dielectric-constant POM plate has the effects that the interference on the signal transmission of the communication equipment instrument can be greatly reduced, the signal transmission delay of the communication equipment instrument can be effectively reduced after the shell of the communication equipment instrument is manufactured, and the transmission power of a signal required to be sent by the communication equipment instrument is reduced.

Description

technical field [0001] The invention relates to the field of engineering plastics, in particular to a low dielectric constant POM board and a preparation method thereof. Background technique [0002] POM board (polyoxymethylene board) is commonly known as Sai steel plate. It is to use POM plastic particles to extrude through the extruder at high temperature, and extrude through the corresponding die mouth to obtain plates with different thicknesses. It is a thermoplastic engineering plastic with high melting point and high crystallinity. Due to the good characteristics of the POM board, it is very suitable for machining on automatic lathes, especially for the manufacture of precision parts. [0003] However, this material has certain interference to the signal transmission of communication equipment and instruments. Therefore, the shells (mobile phone shells, tablet computer shells, laptop shells, etc.) made of this material will interfere with the internal communication e...

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Problems solved by technology

[0003] However, this material has certain interference to the signal transmission of communication equipment and instruments. Therefore, the shells (mobile phone shells, tablet computer shells, laptop shells, etc.) made of this material will interfere with the internal communication equipment and instruments. As a result, the signal transmission power required by communication equipment and instruments is greater, and there is a problem of signal transmission delay, which is very inconvenient to use