Immersion ultrasonic measurement device and method for adjusting and measuring channel gap

Abstract

The invention discloses an immersion ultrasonic measurement device and method for adjusting and measuring a channel gap. The immersion ultrasonic measurement device comprises a measuring head and a distance adjustable device, wherein the measuring head includes the main body of a measuring head; a slit channel is formed in the end part of the main body of the measuring head in the radial direction, and enables the melt to flow; one side of the slit channel is provided with a probe channel; a buffer rod with a cladding layer is arranged in the probe channel; an ultrasonic probe is fixedly arranged in the buffer rod; the buffer rod is fixed on the distance adjustable device; a displacement sensor is arranged on the distance adjustable device; and the distance adjustable device drives the buffer rod to move axially along the probe channel, so that the distance from the ultrasonic probe to the radial direction of the slit channel can be adjustable. During the process of ultrasonic measurement for a polymer melt, the immersion ultrasonic measurement device can break through the restriction of the physical width of a current die and can expand the test area of the probe. The immersion ultrasonic measurement device can research the granularity size and the dispersion behavior for the polymer filling system melt in different channels, and has practical significance for the technology development of polymer processing engineering.

Description

technical field [0001] The invention relates to the technical field of polymer ultrasonic testing, in particular to an immersion ultrasonic measuring device and a measuring method for adjusting the gap of a measuring flow channel. Background technique [0002] Due to the needs of molding during polymer processing and molding, certain particles are usually added as reinforcing components during the flow of the polymer melt to improve the product performance of the molding material and reduce costs. However, the polymer melt components The influence of the microstructure such as the dispersed state will eventually affect the macroscopic properties such as the size, shape, and physical properties of the polymer product. How to understand the dispersion state, and adjust the process in time according to the existing dispersion state, and feedback the actual production parameters at the first time, so that the staff can adjust the preset process parameters in time, reduce the rat...

AI Technical Summary

Problems solved by technology

The invention provides a detection scheme for the detection of particle size dispersion of polymer-enhanced particles, and solves the problem that the current field of polymer processing cannot quantitatively characterize the dispersion of polymer-based composite material reinforcement particles, especially the local dispersion.

Images