Terahertz dielectric property testing device and method for flaky high-molecular polymer

Abstract

The invention provides a terahertz dielectric property testing device and method for a flaky high-molecular polymer. The device comprises a clamping mechanism, a position moving mechanism, a first supporting piece and a laser range finder, wherein the clamping mechanism comprises a first plate and a second plate which are used for clamping and fixing the flaky high-molecular polymer; a first lensopposite to a first through hole in position and a second lens opposite to a second through hole in position are arranged on two sides of the clamping mechanism respectively; a terahertz signal is transmitted to the flaky high-molecular polymer at the first through hole in parallel through the first lens and the second lens respectively; the laser range finder is fixed on the side edge of the lens,; the emitting surface of the laser range finder is coplanar with the lens surface; and the laser range finder is used for adjusting the position of the clamping mechanism and determining the thickness of the flaky high-molecular polymer. The device is simple to operate and can test flaky high-molecular polymers with different sizes and thicknesses.

Description

technical field [0001] The present disclosure relates to the technical field of testing terahertz dielectric properties, and in particular to a device and method for testing terahertz dielectric properties of sheet-like polymers. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] There are many kinds of high molecular polymer products, which are widely used in a wide range of fields, for example, they are widely used in automobile tires and cables. During long-term use, high-molecular polymer products are inevitably eroded and damaged by external conditions such as heat, light, salt spray, and ozone, resulting in aging. From the perspective of material microstructure, the aging of polymers is a change in its molecular structure, such as molecular chain breakage, re-crosslinking, etc., coupled with the invasion of external elements such as ...

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Problems solved by technology

[0005] The inventors of the present disclosure have discovered that polymer products are mostly soft materials, and samples made of thin slices are not easy to stand upright, and most polymer products may become soft and sticky after being aged by artificial thermal oxygen, ultraviolet rays or ozone. , may also become hard and brittle, and the surface is deformed, so this puts forward higher requirements for the positioning of the polymer sample testing system. At present, there is no better device or method for polymer positioning.

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