Cotton Quality Study VI

Tovey, Henry

doi:10.1177/004051756103100301

Cited by 55 publications

(5 citation statements)

References 230 publications

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“…Each motor is actuated by a different air tube (on the right side of each picture). Although fabricating paper origami joints is easier and faster, in the current paper we used polyethylene to ensure consistent operation over a longer period of time [78]. The paper-like materials tend to tear apart after several movements or over time.…”

Section: System Designmentioning

confidence: 99%

Design and analysis of plate angles of the four-vertex origami pattern and its impacts on movement of rotational joints

Zare

Teodorescu

2021

Smart Mater. Struct.

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We present a pneumatic origami joint, which consists of 89 degrees plate angles of Four-vertex origami mechanism activated by pouch motors. The proposed prototype consists of four high-density polyethylene plates connected by flexible adhesive polyethylene tapes. A cutting-binding technique was used for the fabrication of the origami. This technique is inexpensive and easy to replicate. We modeled the kinematics of the origami as a spherical mechanism, and compared with experimental result, against several origami mechanisms with different angles of origami's plates. We found that an origami mechanism with a plate angle of 89 • shows around 8.4 times higher rotational movement for a given angular displacement of the input link compared to a mechanism with a plate angle close to 0 • or a simple fold which is equivalent to a revolute joint. The proposed design is flat-foldable (the sum of odd or even angles around the central vertex equals to 180 • ). The pneumatic origami joint can fold and adapt its shape to the environment.

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Section: System Designmentioning

confidence: 99%

Design and analysis of plate angles of the four-vertex origami pattern and its impacts on movement of rotational joints

Zare

Teodorescu

2021

Smart Mater. Struct.

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“…However, despite much research and promotion (33)(34)(35)(36), formaldehyde has had only limited use in practical heat-cure and vaporphase applications. One has only to stand by an oven or range using formaldehyde as the agent to understand the odor problem attached to the use of this agent.…”

Section: Early Cross-linking Agentsmentioning

confidence: 99%

Textiles, Finishing

Calamari

Harper

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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Textile finishing includes various efforts to improve the properties of textile fabrics, whether for apparel, home, or other end uses. In particular, these processes are directed toward modifying either the fiber characteristics themselves or the gross textile end properties. Such modifications may be chemical or mechanical in nature. One modification that is not covered in this article relates to the dyeing of textiles and the dyestuffs employed for fibers; however, areas that involve chemical finishing designed to modify the normal dye receptivity and the growing use of enzyme treatments are included.Fibers have been used by humans for thousands of years, but only in the twentieth century has there been such an explosion in fiber types available to the textile manufacturer. The advent of synthetic fibers possessing improved resiliency and dimensional stability has placed natural fibers, particularly cotton (qv), at an ostensible disadvantage. Before synthetics, various means to control the shrinkage, dimensional stability, and smooth-dry performance of cotton had been investigated, but the appearance of synthetics such as polyester has placed a greater sense of urgency on cotton interests to focus on the perceived deficiencies of natural fibers.Textile finishing encompasses a broad range of approaches and may be directed toward needed properties such as shrinkage control or smooth-dry performance or toward developing properties for specific end uses such as flame retardance, soil release, smolder resistance, weather resistance, or control of static charges.From a historical point of view, mechanical finishing processes have been directed toward improving shrink resistance via compressive shrinkage (Sanforized process) or calender finishing to give surface effects, which include shreinering, chintz finishing, and embossing. These latter effects are semidurable, and can be made more permanent by cross-linking with resins. However, such cross-linked fabrics seem to suffer greater loss in tearing strength when cross-linked in the calendered state. The need for calendered fabrics has decreased with the advent of cross-linked cotton, but compressive shrinkage to control garment shrinkage remains a significant component in textile mill practice, particularly for products that receive little or no resin treatments.For fabrics of thermoplastic fibers, permanent effects are obtainable if heat and pressure are applied to soften the material. Processes dealing with carpets, nonwovens, and chemical modifications or additions that occur before the fiber is formed are not discussed herein (see Nonwoven fabrics).

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“…Imidazolidine trione and their derivatives are useful in the synthesis of high‐performance polymers because of their high decomposition temperature and mechanical and thermal resistant properties, and find numerous applications, e.g. in the synthesis of polyester resin,15 polyurethanes and polyacrylates15 and in increasing the crease‐proof properties of cotton fabrics 16…”

Section: Introductionmentioning

confidence: 99%