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Vicat softening temperature or Vicat hardness is the determination of the softening point for materials that have no definite melting point, such as plastics. It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat-ended needle with a 1 mm 2 circular or square cross-section.
The softening point is the temperature at which a material softens beyond some arbitrary softness. [1] It can be determined, for example, by the Vicat method (ASTM-D1525 or ISO 306), Heat Deflection Test (ASTM-D648) or a ring and ball method (ISO 4625 or ASTM E28-67/E28-99 or ASTM D36 or ASTM D6493 - 11 or JIS K 6863).
World locations of Vicat. The company was established in 1853 by Joseph Vicat (1821–1902), son of Louis Vicat, who invented artificial cement in 1817. His cement plant was at Genevrey-de-Vif south of Grenoble . It used an argillaceous limestone that Joseph Vicat had established as suitable by chemical analysis. The company expanded in 1922 ...
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Louis Vicat (31 March 1786, Nevers – 10 April 1861, Grenoble) was a French engineer. He graduated from the École Polytechnique in 1804 and the École des Ponts et Chaussées in 1806. Vicat studied the setting of mortars and developed his own.
Artificial Cement by Louis Vicat. [280] Hairdryer in 1879 by Alexandre Godefroy. [281] Modern Dry cleaning in 1855 by Jean Baptiste Jolly. [282] Reinforced concrete by Joseph Monier in 1849 and patented in 1867. [283] Loppers by Bertrand de Molleville. Ball bearing by Jules Suriray, a Parisian bicycle mechanic, on 3 August 1869. [284]
Pet parenting just entered its tech era, and your fur baby's living their best analog life while others are going digital. We've rounded up 25 genius gadgets that transform basic pet care into ...
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