Device and method for preparing small-size round gelatin sheet sample

Abstract

The invention discloses a device and a method for preparing a small-size round gelatin sheet sample. The device comprises a preparation die and a punch, wherein the preparation die is used for preparing a rectangular gelatin sheet comprising a front frosted glass plate, a rear frosted glass plate, a sandwich framework and a clamping tool; the front and rear frosted glass plates are of rectangular structures with same width; the sandwich layer framework is a hollow square-shaped framework which is arranged between the front frosted glass plate and the rear frosted glass plate; the front frosted glass plate, the sandwich framework and the rear frosted glass plate are clamped and sealed through the clamping tool; inner walls of the front and rear frosted glass plates are each provided with an anti-sticking layer; the height of the front frosted glass plate is smaller than the height of the rear frosted glass plate; a gap used for injecting a gelatin solution is formed between the front frosted glass plate and an upper frame of the sandwich framework; the punch is of a tubular structure, and a taper for cutting the rectangular gelatin sheet prepared by the preparation die is arranged at the head part of the punch. A gelatin sample prepared by the device disclosed by the invention is regular in shape, uniform in thickness and smooth in end surface, and the efficiency for preparing the small-size round gelatin sheet sample is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of Hopkinson compression bar experiments, in particular to a preparation device and method for a small circular gelatin sheet sample. Background technique [0002] In the Hopkinson compression bar experiment technique, the sample is required to be a round sheet with regular shape, uniform thickness, and flat end surface, while gelatin is a soft material with high viscosity and low strength, and the required sample size is small ( 5-10 mm in diameter, 2-5 mm in thickness), the traditional method of flat punching and injection molding requires high levelness and precise injection molding dose control, but there are poor thickness consistency, difficult demoulding, uneven end faces, and easy Defects such as damage and low yield. Contents of the invention [0003] The object of the present invention is to provide a simple preparation device and method for small round gelatin sheet samples, to prepare gelatin ...

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Problems solved by technology

[0002] In the Hopkinson pressure bar experiment technique, the sample is required to be a round sheet with regular shape, uniform thickness, and flat end surface, while gelatin is a soft material with high viscosity and low strength, and the required sample size is small ( 5-10 mm in diameter, 2-5 mm in thickness), the traditional method of flat punching and injection molding requires high levelness and precise injection molding dose control, but there are poor thickness consistency, difficult demoulding, uneven end faces, and easy Disadvantages such as damage and low yield

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