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Acrylic is lightweight, soft, and warm, with a wool-like feel. [2] It can also be made to mimic other fibers, such as cotton, when spun on short staple equipment. Some acrylic is extruded in colored or pigmented form; others are extruded in "ecru", otherwise known as "natural," "raw white," or "undyed." Pigmented fiber has the highest color ...
<1% Iron oxides In 1966 Pyrex 7740 had a composition of about 80.6% SiO 2 , 13% B 2 O 3 , 4.3% Na 2 O and 2.1% Al 2 O 3 . [ 75 ] Similar glasses have a coefficient of linear expansion of about 3 parts per million per Kelvin at 20°Celsius.
Acrylic resin, a group of related thermoplastic or thermosetting plastic substances; Acrylic fiber, a synthetic fiber of polyacrylonitrile; Acrylic paint, fast-drying paint containing pigment suspension in acrylic polymer emulsion; Poly(methyl methacrylate), also known as acrylic glass or Plexiglass, a transparent thermoplastic
It is usually made from either wool, wool and cotton, or wool and synthetic fabric. flax Flax fiber is soft, lustrous and flexible. It is stronger than cotton fiber but less elastic. The best grades are used for linen fabrics such as damasks, lace and sheeting. Coarser grades are used for the manufacturing of twine and rope. frieze
Acrylic elastomer is a general term for a type of synthetic rubber whose primary component is acrylic acid alkyl ester (ethyl or butyl ester). [3] Acrylic elastomer possesses characteristics of heat and oil resistance, with the ability to withstand temperatures of 170–180 °C. It is used primarily for producing oil seals and packaging related ...
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Eisengarn, meaning "iron yarn" in English, is a light-reflecting, strong material invented in Germany in the 19th century. It is made by soaking cotton threads in a starch and paraffin wax solution. The threads are then stretched and polished by steel rollers and brushes.
Modacrylic fibers are modified acrylic fibers made from acrylonitriles, but larger amounts of other polymers are added to make the copolymers. The modacrylic fibers are produced by polymerizing the components, dissolving the copolymer in acetone, pumping the solution into the column of warm air (dry-spun), and stretching while hot. [3]