At the beginning of the twentieth century, it was considered inconceivable for enterprises to engage in basic scientific research. 1926 DuPont, the largest industrial company in the United States, is interested in basic science and suggests that it carry out basic research to discover new scientific facts. 1927, the company decided to pay $250,000 a year as research expenses and began to hire chemical researchers. By 1928, DuPont established the Institute of Basic Chemistry, and Dr. Wallace H. carothers (1896 ~ 1937), who was only 32 years old, was hired as the head of the Department of Organic Chemistry of the Institute.
American organic chemist Carothers. 1896 was born in Wilmington, Iowa, USA on April 27th. 1937 died in Philadelphia, USA on April 29th. 1924 After receiving his doctorate from the University of Illinois, he taught and studied organic chemistry in this university and Harvard University successively. 1928 was employed to do organic chemistry research in DuPont laboratory in Wilmington, USA. He presided over a series of studies on obtaining high molecular weight substances by polymerization. In 1935, adipic acid and hexamethylene diamine were used as raw materials to prepare polymer. Because both components contained six carbon atoms, it was called polymer 66 at that time. He melted the polymer, extruded it with a needle and stretched it under tension, which is called fiber. This kind of fiber, polyamide 66 fiber, 1939 was named nylon after industrialization, and it was the earliest industrialized synthetic fiber variety.
The synthesis of nylon laid the foundation of synthetic fiber industry, and the appearance of nylon made textiles look brand-new Nylon stockings woven from this fiber is transparent and more durable than silk stockings. 1939,10mesh On the 24th, DuPont made a sensation when it publicly sold nylon stockings at its headquarters, and it was regarded as a rare thing to snap up. People once praised this fiber as "as thin as spider silk, as strong as steel wire and as beautiful as spun silk". To 1940,
From the outbreak of World War II until 1945, the nylon industry turned to military products such as parachutes, aircraft tire fabrics and military uniforms. Because of its characteristics and wide application, nylon developed very rapidly after the Second World War. Various products of nylon, from stockings and clothes to carpets and fishing nets, have appeared in countless ways and become one of the three major synthetic fibers.
Most stockings and some security uniforms on the market are made of nylon, which is easy to burn. The burning edge is mushy, like plastic. It's easy to compete with Bubby.