Tensile strength of acrylic plastics (PPM) in the presence of a temperature gradient over the thickness of the material
- 94 Downloads
Experimental values of the strength and deformation are presented for SO-95, SO-120, and SO-140 acrylic plastics (polymethyl methacrylate: plasticized, unplasticized, and copolymer) stressed in unaxial tension at v=10 mm/min, stationary temperature gradients of from 2.5 to 17.5 deg/mm over the thickness of the material, and a constant cold-face temperature of 25°C. The deformation properties under these conditions are described: in the presence of a temperature gradient the ultimate strains are higher than for a uniform temperature field at a temperature equal to the cold-face temperature, and the elongation at break falls as the hot-face temperature rises. The tensile strength of plastics with a temperature drop over the cross section can be approximately calculated from the mechanical characteristics obtained for a uniform temperature field.
KeywordsTensile Strength Temperature Gradient Methacrylate Polymethyl Methacrylate Temperature Field
Unable to display preview. Download preview PDF.
- 1.B. I. Panshin and G. E. Vishnevskii, Plast. Massy, No. 3, 71 (1961); No. 10, 55 (1961).Google Scholar
- 2.M. G. Lozinskii and G. E. Vishnevskii, IMASh-11 Equipment for Investigating the Mechanical Properties of Sheet Materials Heated on One Side [in Russian], GOSINTI, No. 32-63-61/1 (1963).Google Scholar
- 3.G. S. Pisarenko, V. N. Kudenko, G. N. Tret'yachenko, and V. T. Troshchenko, Strength of Materials at High Temperatures [in Russian], Kiev (1966).Google Scholar
- 4.Handbook of Plastics [in Russian], Khimiya (1968), p. 168.Google Scholar
- 5.S. N. Zhurkov and S. A. Abasov, VMS, 4, 1703 (1962).Google Scholar
- 6.M. I. Bessonov and E. V. Kuvshinskii, in: Solid-State Physics [in Russian], Izd-vo AN SSSR (1959), p. 265.Google Scholar
- 7.N. T. Smotrin and V. M. Chebanov, Mekhan. Polim., No. 4, 60 (1965).Google Scholar