Search results
Results From The WOW.Com Content Network
Natural fibers are also used in composite materials, much like synthetic or glass fibers. These composites, called biocomposites, are a natural fiber in a matrix of synthetic polymers. [1] One of the first biofiber-reinforced plastics in use was a cellulose fiber in phenolics in 1908. [1]
Most synthetic fibers are round in cross-section, but special designs can be hollow, oval, star-shaped or trilobal. The latter design provides more optically reflective properties. Synthetic textile fibers are often crimped to provide bulk in a woven, non woven or knitted structure. Fiber surfaces can also be dull or bright.
The brightness of the fire in opal ranges on a scale of 1 to 5 (with 5 being the brightest) [14] "Girasol opal" is a term sometimes mistakenly and improperly used to refer to fire opals, as well as a type of transparent to semitransparent type milky quartz from Madagascar which displays an asterism, or star effect when cut properly.
The technology of production of basalt continuous fiber (BCF) is a one-stage process: melting, homogenization of basalt and extraction of fibers. Basalt is heated only once. Further processing of BCF into materials is carried out using "cold technologies" with low energy costs.
As of 2017, the domestic cat was the second most popular pet in the United States, with 95.6 million cats owned [198] [199] and around 42 million households owning at least one cat. [200] In the United Kingdom , 26% of adults have a cat, with an estimated population of 10.9 million pet cats as of 2020.