作者: 譏笑 時(shí)間: 2025-3-21 21:33
Structural principles of polymeric fibres,istry and physics; the consumer looks for durability, comfort, adequate dimensional stability and other useful properties in addition to aesthetic appeal. However, the fibre producer must have a good understanding of how fibre structure controls its properties so that the fibre can be ‘engineered’ b作者: NAVEN 時(shí)間: 2025-3-22 03:47 作者: maculated 時(shí)間: 2025-3-22 06:32
Melt-spinning processes,ith the use of solvents. It is therefore the preferred method, provided the polymer gives a stable melt. When polymer granules or chips form the starting material for melt-spinning, they are first dried and then melted in the extruder. The homogenized and filtered melt is squirted through narrow cha作者: Fulsome 時(shí)間: 2025-3-22 10:09 作者: Abominate 時(shí)間: 2025-3-22 13:52
Solution-spinning processes,inly as the former does not involve the use of solvents and the problems associated with their use, namely their removal, recovery, the associated environmental concerns and the low spinning speeds. When melt-spinning cannot be carried out, either because the polymer degrades before melting or the m作者: 新陳代謝 時(shí)間: 2025-3-22 20:48 作者: limber 時(shí)間: 2025-3-22 22:00 作者: 起皺紋 時(shí)間: 2025-3-23 03:34
Characterization of polymers and fibres,ts are as per the specifications. Though fibre characterization has significant areas of commonality with polymer characterization, the emphasis is often different, necessitating adaptation of the techniques to meet specific needs and sometimes the use of special techniques. However, fibre character作者: 上下連貫 時(shí)間: 2025-3-23 08:22
Testing of manufactured fibres,t and process optimization. Fineness, crimp, shrinkage, tensile and evenness are some of the properties tested depending on the material and end use requirements. The exact norms for these properties are not normally available but, depending on the product and end use requirements of the customer, e作者: Intrepid 時(shí)間: 2025-3-23 12:27 作者: mastoid-bone 時(shí)間: 2025-3-23 17:45
Nylon 6 and nylon 66 fibres,an amide, -NH-CO-, group. A polyamide manufactured from aliphatic monomer(s) is commonly designated as nylon. However, the US Federal Trade Commission has defined nylon as a manufactured fibre in which the fibre-forming substance is a long-chain synthetic polyamide in which less than 85% of the amid作者: arthroscopy 時(shí)間: 2025-3-23 18:59
Speciality polyamide and polyester yarns: an industrial approach to their production and rheology, the standard polymer and the filaments have a round cross-section. The so-called ‘speciality yarns’ are also melt-spun either from a chemically modified polymer or through a process involving physical modification or special equipment. The wide spectrum of such yarns includes such diverse products 作者: palette 時(shí)間: 2025-3-24 02:11
Acrylic fibres,en shown by their phenomenal growth and their popularity throughout the world. Acrylic fibres have replaced wool in many major applications, particularly in hand knitting and hosiery garments. The majority of knitting yarns are usually bulky yarns which go into the manufacture of pullovers, sweaters作者: esthetician 時(shí)間: 2025-3-24 06:14
Polypropylene fibres,arena in the 1970s and have become an important member of the rapidly growing family of synthetic fibres. Today polypropylene enjoys fourth spot behind the ‘big three’ fibre classes, i.e. polyester, nylon and acrylic. However, as opposed to other commodity fibres, its use as apparel and household te作者: inquisitive 時(shí)間: 2025-3-24 08:38 作者: 包庇 時(shí)間: 2025-3-24 13:47 作者: temperate 時(shí)間: 2025-3-24 18:27 作者: 聚集 時(shí)間: 2025-3-24 21:17
Kushal Sen introduction to Lie groups and serves as a foundation for aAimed at advanced undergraduate and beginning graduate students, this book provides a first taste of the theory of Lie groups as an appetiser for a more substantial further course. Lie theoretic ideas lie at the heart of much of standard un作者: 調(diào)色板 時(shí)間: 2025-3-24 23:14 作者: convert 時(shí)間: 2025-3-25 03:43 作者: Pastry 時(shí)間: 2025-3-25 10:53
B. C. Goswami introduction to Lie groups and serves as a foundation for aAimed at advanced undergraduate and beginning graduate students, this book provides a first taste of the theory of Lie groups as an appetiser for a more substantial further course. Lie theoretic ideas lie at the heart of much of standard un作者: abject 時(shí)間: 2025-3-25 12:53
Spin finishes for manufactured fibres,Manufactured fibres require spin finishes for efficient processability and conversion to textile materials for various applications. Although a spin finish is a layer only a few molecules thick on the surface of the fibre, it is one of the most important variables dictating the performance, quality and uniformity of processing.作者: 尾巴 時(shí)間: 2025-3-25 17:25
http://image.papertrans.cn/m/image/623616.jpg作者: FADE 時(shí)間: 2025-3-25 21:50 作者: CLOWN 時(shí)間: 2025-3-26 00:22
Introduction,bility. In addition, it should have dimensional and thermal stability and minimum levels of strength and extensibility consistent with the end use. Fibres should also be capable of being converted into yarns and fabrics. There are a number of other requirements that a fibre must satisfy, but those noted above are relatively more significant.作者: 取消 時(shí)間: 2025-3-26 07:32
Basic principles of fluid flow during fibre spinning,hese creatures showed that the following steps were required for extruding thin continuous filaments: (1) acquisition of spinnable liquid, (2) jet formation, and (3) jet hardening. Add to this bobbin winding, and we get manufactured fibres in the spun state. The manufactured fibres may need further drawing so that they have adequate properties.作者: 古董 時(shí)間: 2025-3-26 09:57 作者: installment 時(shí)間: 2025-3-26 13:48 作者: 卷發(fā) 時(shí)間: 2025-3-26 17:20
Melt-spinning processes,ment bundles are wound on tube rolls. In larger modern plants, polyester and nylon are produced in continuous polymerization units in which the melt is directly transported from the final polymerizer to the melt-spinning unit. In the case of polypropylene, since polymerization leads to a solid product, it is separate from the spinning process.作者: uncertain 時(shí)間: 2025-3-26 21:12 作者: 我不明白 時(shí)間: 2025-3-27 05:03
Acrylic fibres,uminosity, ease of washing, resistance to pilling and good light and colour fastness. Because of these properties, and also due to the ease with which modifications can be made during synthesis, spinning and finishing, acrylic fibres have experienced a tremendous growth since their introduction by Du Pont, USA, in 1950.作者: Mitigate 時(shí)間: 2025-3-27 07:11
Testing of manufactured fibres,ach plant establishes certain norms for each important property. Besides satisfying these norms, the fibres and yarns should have consistent properties. The principles and methods of evaluating these properties are discussed in this chapter.作者: 阻擋 時(shí)間: 2025-3-27 12:50
Nylon 6 and nylon 66 fibres,e linkages are attached directly to two aromatic rings, while a polyamide in which at least 85% of the amide links are joined to two aromatic groups is known as an aramid. Aramid fibres are mainly used for industrial applications and are described in Chapter 18.作者: 聲明 時(shí)間: 2025-3-27 15:33 作者: Dappled 時(shí)間: 2025-3-27 20:16
Structural principles of polymeric fibres, available polymers so that the structural requirements for a useful fibre-forming polymer become clear. This is the primary purpose of this chapter. The emphasis is on a physical understanding of the structure-property relationships in very simple terms; the resulting loss of accuracy should not detract from the main theme that is developed.作者: Breach 時(shí)間: 2025-3-27 22:33 作者: Proponent 時(shí)間: 2025-3-28 05:59 作者: 隨意 時(shí)間: 2025-3-28 07:41 作者: 摸索 時(shí)間: 2025-3-28 12:18
Book 1997oduction of all important commoditymanufactured fibres and most of the industrial fibres. The emphasis ison the fundamental principles and industrial aspects of production.Latest developments in manufactured fibres in terms of manufacturingprocesses, characteristics and their applications are also c作者: 蕨類(lèi) 時(shí)間: 2025-3-28 17:10 作者: 粘 時(shí)間: 2025-3-28 18:46
Polypropylene fibres,d the ‘big three’ fibre classes, i.e. polyester, nylon and acrylic. However, as opposed to other commodity fibres, its use as apparel and household textiles has been rather limited; the bulk of the fibre produced is used for industrial applications. Nevertheless, the textile and household uses are growing.作者: 慢慢啃 時(shí)間: 2025-3-29 00:33 作者: Deject 時(shí)間: 2025-3-29 04:01
Kushal Seny developed theory, preparing students for a more standard and abstract course in Lie theory and differential geometry..978-1-85233-470-3978-1-4471-0183-3Series ISSN 1615-2085 Series E-ISSN 2197-4144 作者: conscience 時(shí)間: 2025-3-29 08:55
A. K. Senguptay developed theory, preparing students for a more standard and abstract course in Lie theory and differential geometry..978-1-85233-470-3978-1-4471-0183-3Series ISSN 1615-2085 Series E-ISSN 2197-4144 作者: Processes 時(shí)間: 2025-3-29 12:41 作者: 死亡率 時(shí)間: 2025-3-29 18:16 作者: 虛構(gòu)的東西 時(shí)間: 2025-3-29 20:15 作者: 征兵 時(shí)間: 2025-3-30 02:57
Heat-setting of thermoplastic fibres,endency to curl; this has a deleterious effect on further processing. Apart from this, planar structures like fabrics produced from these unset, continuous filaments or fibres display unfavourable creasing behaviour when in use. Therefore it is necessary to ‘set’ the drawn or twisted filaments in or作者: 乳白光 時(shí)間: 2025-3-30 04:11
Manufactured fibres for high performance, industrial and non-conventional applications,rial nations moving towards lower volume but much higher value-added products for industrial markets, while the developing countries are expanding their production capacities for commodity fibres [.].作者: essential-fats 時(shí)間: 2025-3-30 12:02 作者: oxidize 時(shí)間: 2025-3-30 14:51 作者: vanquish 時(shí)間: 2025-3-30 19:32 作者: 憤憤不平 時(shí)間: 2025-3-31 00:39
Alexander May,Friedrich Eschenbaum,Oliver Breitensteinnce, polymorphism, dynamic binding, genericity, and agents — SCOOP offers the programmer a simple yet powerful framework for efficient development of concurrent systems..This paper presents a survey of SCOOP, including (1) the foundations of the SCOOP paradigm, its computation and synchronization mo作者: BROW 時(shí)間: 2025-3-31 04:11 作者: 在前面 時(shí)間: 2025-3-31 06:12 作者: 憤怒事實(shí) 時(shí)間: 2025-3-31 11:12 作者: 空洞 時(shí)間: 2025-3-31 15:23 作者: 初次登臺(tái) 時(shí)間: 2025-3-31 19:05
Near-infrared imaging in H2 of molecular (CO) outflows from young stars,st energetic outflows known from a high-mass source, turbulent motions along the interface of the flow with the ambient medium seem to play a far more important role than in its low-mass counterparts.
