然后,我们将己二胺(HMD)与己二酸——也就是尼龙6,6中的另外六个碳分子混合, 这会在水中形成盐溶液。 6. 加压 接着使盐经过高温和高压处理,排空水,使熔融的聚酰胺链加长和增强。 7. 制造粒子 最后,我们将这些熔融的聚酰胺挤出到冷水槽中,在其中固化,然后将其送入切割机中加工成尼龙6,6颗粒。 8. 尼龙6,6...
McCoyMichaelEBSCO_bspChemical & Engineering NewsMcCoy, M. Slowly changing how nylon is made. Chem. Eng. News 2000, 78, 32-34.
How warm this coat is! It may be made of ___. A. cotton B. fur C. linen D. nylon 相关知识点: 试题来源: 解析 B。“How warm this coat is!”强调外套保暖,皮毛材质保暖性好,故选 B 皮毛。A 棉花、C 亚麻、D 尼龙的保暖性能不如皮毛。反馈...
3.The atmosphere is ___ certain gases mixed together in definite proportions. 4.Nylon is ___ oil, coal and water. 试题答案 在线课程 答案:made into;made of;made up of;made from 练习册系列答案 天天向上口算本系列答案 天下中考系列答案
Not surprisingly, as carry-ons eliminated long waits in airports, they became more and more the luggage of choice in our fast-paced age. Today, about two-thirds of all luggage manufactured throughout the world is made of nylon, says Ermatinger. ...
Textile manufacturers like the fact that it's easy to mix this fabric with other types of textiles; for instance, it plays well with cotton, silk, rayon, polyester, nylon, and wool. How Is Lyocell Fabric Made? Tencel is almost chemically identical to rayon, but a somewhat different ...
What Is Polyamide Fabric? Polyamide fabric is a general term that is used to refer to a variety of different fabrics that are made from strings of polyamide monomers. The most famous form of polyamide fabric is nylon, but there are quite a few different varieties of this textile. While ...
These early nylon polymers were stiff and rigid, so efforts were begun to make them more elastic. When scientists found that other polyurethanes could be made into fine threads, they decided that these materials might be useful in making more stretchable nylons or in making lightweight garments....
In 1926, United States-based E.I. du Pont de Nemours and Co. began research into very large molecules and synthetic fibers. This early research, headed by W.H. Carothers, centered on what became nylon, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists...
Tape, made of plastic or cloth, can then be attached to the handlebars and the ends are plugged. Saddles and seat posts 13 Seat posts are generally steel or aluminum alloy and are bolted or clamped into position. The saddle is generally made of molded padding and covered with nylon or ...