Room temperature testing of PLA plastics

Abstract

Polylactide plastic (PLA) prototypes are studied by means of additive technology to determine their strength properties in case of tension along the grain. In this article, testing of PLA and its compound PLA HP was carried out. Mechanical properties (yield limit, Poisson’s ratio, Young’s modulus) are determined. Analysis of results related to comparison of PLA and PLA HP was realized. Plastic is also studied using microscope for determination of adhesion influence on strength characteristics.

Investigation of the polymer “AEROTEX” mechanical properties in tension of the samples at different printing temperatures

“…Comparison of AEROTEX with other plastics in terms of absolute strength is incorrect, because AEROTEX is originally created for use in unmanned aerial vehicles, respectively, within the framework of this task, the specific strength of the material is especially important, the greater the specific strength of the material, the less weight the manufactured part will have. To compare the specific strength of materials, we take the density of PLA equal to 1.25 g/cm 3 [7] and calculate the density of AEROTEX at each individual temperature, at 250 °C the calculated density is 0.85 g/cm 3 , at 240 °C -0.886 g/cm 3 , at 230 °C -1.016 g/cm 3 . If we consider the tension curves in new values (figure 5), the characteristics become more visual.…”

A Sample‐Triggered Microvalve Based on Material Property Regulation Mechanism for Reagent Storage and on‐Demand Release

“…The Poisson's ratios of PLA and PVA film were taken to be 0.32 and 0.43, respectively. [35][36][37] Based on the material property, the stress distribution of the bilayer films under the microspring force was simulated using ABAQUS finite-element analysis software. As shown in Figure 2b, the maximum principal stress of the single-layer PLA film gradually decreased as the film thickness increased.…”