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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 ...
A slab of pykrete Pykrete is made of 14% sawdust and 86% water by mass.. Pykrete (/ ˈ p aɪ k r iː t /, PIE-creet) [1] is a frozen ice composite, [2] originally made of approximately 14% sawdust or some other form of wood pulp (such as paper) and 86% ice by weight (6 to 1 by weight).
Fake fur can be made from a variety of materials, including polyester, nylon, or acrylic. First introduced in 1929, fake furs were initially composed of hair from the South American alpaca . The ensuing decades saw substantial improvements in their quality, particularly in the 1940s, thanks to significant advances in textile manufacturing .
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.
Cotton cellulose polymer comprises three different regions: the crystalline region, the amorphous region, and an intermediate region between them. Although in the crystalline region the cellulose chains are closely arranged, limiting their mobility, chains in the amorphous and intermediate regions are bonded together by weaker bonds making them ...
The cited Andersland Charts include corresponding water content percentages for easy measurements. The TPRC Data Book has been quoting de Vries with values of 0.0251 and 0.0109 W⋅cm −3 ⋅Kelvin −1 for the thermal conductivities of organic and dry mineral soils respectively but the original article is free at the website of their cited ...
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Thinsulate fibers are about 15 micrometres (0.00059 in) in diameter, [8] which is thinner than the polyester fibers normally used in insulation for clothing such as gloves or winter jackets. Advertising material suggests that Thinsulate is more effective due to the increased density of fibers with decreased size of fibers compared with more ...