Device for determining density continuous distribution of uniform-thickness transparent high polymer product

Abstract

The invention relates to a device for determining the density continuous distribution of a uniform-thickness transparent high polymer product. The device uses a laser generator, a laser beam shaping frame, a polarizing element, a sample position adjustment system, an optical lens, a wavefront sensor and a computer as main components, wherein the laser beam shaping frame is connected with a laser beam outlet of the laser generator to regulate the shape of a laser beam; the sample position adjustment system is used to clamp a uniform-thickness transparent high polymer product to be determined via a sample fixture; the computer is simultaneously connected with the sample position adjustment system and the wavefront sensor via communication cables; and when the device for determining the density continuous distribution of a uniform-thickness transparent high polymer product is ready, the laser generator, the laser beam shaping frame, the polarizing element, the uniform-thickness transparent high polymer product to be determined, the optical lens and the wavefront sensor are sequentially arranged, and the central points thereof are on the central line of the laser beam. The device is mainly characterized in that a nondestructive measurement method is adopted, the density continuous distribution of all points in the plane of the sample can be obtained, and the determined sample can not be polluted.

Description

technical field [0001] The invention relates to a device for measuring continuous density distribution of transparent products, in particular to a device for measuring continuous density distribution of transparent high polymer (high molecular polymer) products of equal thickness. Background technique [0002] As the national concept of energy saving and emission reduction continues to be deeply rooted in the hearts of the people, "lightweight design" is more and more popular in the design and manufacture of mechanical equipment. One of the outstanding manifestations of "lightweight" is "replacing steel with plastic", that is, using lightweight, high-performance polymer materials and their composite materials to replace traditional metal materials in automobiles and other equipment. As a branch of polymers, transparent polymers are playing an increasingly important role in the fields of optics, medicine and aerospace. As typical equipment parts, transparent polymer products ...

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Problems solved by technology

Yet, there is following obvious defect in this patent: (1) the density measurement method based on ultrasonic technology, its accuracy is low; polymer products) for physical contact, so it is not suitable for density measurement of products with special contact-proof requirements in the optical field; (3) more critically, a specific coupling agent needs to be applied between the ultrasonic probe and the measured object, so it will Physical or even chemical contamination of the measured object

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