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Effect Of Organic Accelerators On The Sulfur Vulcanization Of Brominated Ethylene Propylene Rubber
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Book Synopsis Effect of Organic Accelerators on the Sulfur Vulcanization of Brominated Ethylene Propylene Rubber by : A. A. Dontsov
Download or read book Effect of Organic Accelerators on the Sulfur Vulcanization of Brominated Ethylene Propylene Rubber written by A. A. Dontsov and published by . This book was released on 1972 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made of the kinetics involved in splitting off of bound bromine, the attachment of accelerator sulfur and elemental sulfur, and also cross linking during heating of brominated ethylene-propylene rubber with sulfur-vulcanization accelerators - mercaptobenzothiazoles, dibenzothiazyl disulfide, tetramethylthiuram disulfide, and zinc diethyldithiocarbamate both with and without elemental sulfur. During sulfur vulcanization of brominated ethylene-propylene rubber the accelerators react in two directions.
Book Synopsis Highly Efficient Methods for Sulfur Vulcanization Techniques, Results and Implications by : Dr Ali Ansarifar
Download or read book Highly Efficient Methods for Sulfur Vulcanization Techniques, Results and Implications written by Dr Ali Ansarifar and published by Balboa Press. This book was released on 2022-02-09 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, two new methods are described and supported by extensive experimental results that measure the amounts of a sulfur-donor thiuram accelerator and a sulfenamide thiazole accelerator needed to provide monomolecular coverage of zinc oxide. These methods use zinc oxide with only one accelerator and no stearic acid to produce two single additives, that can efficiently cure rubber, despite using fewer chemicals. This is a departure from the past when efficiency in sulfur vulcanization was achieved by using a high volume of these chemicals. A few sulfur-donor accelerators that exist produce highly toxic nitrosamines during high-temperature mixing and curing. When safer accelerators are on hand to treat the zinc oxide, a suitable single additive will be available to replace the current sulfur cure systems in industrial rubber formulations. This will bring huge benefits to the manufacturers and users of these chemicals. It is preferable to use zinc oxide to determine the precise amount of the accelerator required for a satisfactory cure rather than relying on outdated methods that need to be modified. A software is also developed to help with the selection and management of zinc oxide and the accelerators for the sulfur vulcanization. Green rubber products are within reach.
Book Synopsis Organic Accelerators in the Vulcanization of Rubber by : Grigoriĭ Abramovich Blokh
Download or read book Organic Accelerators in the Vulcanization of Rubber written by Grigoriĭ Abramovich Blokh and published by . This book was released on 1968 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Accelerators of the Vulcanization of Rubber, Chemical Composition with Names of Suppliers by : United States. Office of the Rubber Director
Download or read book Organic Accelerators of the Vulcanization of Rubber, Chemical Composition with Names of Suppliers written by United States. Office of the Rubber Director and published by . This book was released on 1943 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Devulcanization of Ethylene-propylene-diene Monomer Rubber Waste by : Larissa Gschwind
Download or read book Devulcanization of Ethylene-propylene-diene Monomer Rubber Waste written by Larissa Gschwind and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic study was performed to understand the effects of the devulcanizing agent dibenzamido diphenyl disulfide (DBD) on the vulcanization and devulcanization process of a sulfur-cured ethylene-propylene-diene monomer (EPDM) rubber. The influence of DBD on vulcanization was investigated by mixing DBD with virgin rubber and curative system. The devulcanization of rubber waste was achieved with varying amounts of DBD ranging from 0.4 to 13.8 wt% and temperatures from 150 to 200°C. The quality of vulcanizates and devulcanizates was evaluated by rheometer tests, temperature scanning stress relaxation measurements, and analysis of mechanical properties. During vulcanization, DBD acts as an accelerator in the presence of sulfur. When accelerators are added, the scorch time increases, and the cure rate decreases. Thus, DBD acts as a retarder. In the presence of activators, DBD leads to a significant reduction of crosslink density. This results in composites with high elongation at break and poor compression set values. The efficiency of the devulcanization of rubber waste depends strongly on DBD concentration and temperature. The monosulfidic crosslinks are cleaved by low concentrations of DBD, while polysulfidic crosslinks require higher concentrations. These results show that DBD is effective as a devulcanizing agent and degrades the network below 200°C.
Book Synopsis Vulcanization of Elastomers by : Glen Alliger
Download or read book Vulcanization of Elastomers written by Glen Alliger and published by . This book was released on 1964 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Accelerators and Curing Systems for Elastomers by : G. A. Blokh
Download or read book Organic Accelerators and Curing Systems for Elastomers written by G. A. Blokh and published by . This book was released on 1981 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rubber Curing Systems by : R. N. Datta
Download or read book Rubber Curing Systems written by R. N. Datta and published by iSmithers Rapra Publishing. This book was released on 2002 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review discusses the different types of curing systems available today for different rubber types, including natural rubber, SBR, NBR, BR, IIR, CR, XIIR and EPDM. The uses of primary and secondary accelerators, prevulcanisation inhibitors (PVIs) and antireversion chemicals are outlined.Typical rubber formulations for applications in industrial rubber products and tyres are given. Cure systems are described and compared with extensive tables of data on formulae and compound properties. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Book Synopsis Bibliography of rubber literature (excluding patents) by :
Download or read book Bibliography of rubber literature (excluding patents) written by and published by . This book was released on 1971 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1973 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Certain Organic Accelerators on Vulcanization of Rubber by : George Stafford Whitby
Download or read book Influence of Certain Organic Accelerators on Vulcanization of Rubber written by George Stafford Whitby and published by . This book was released on 1921 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rubber Products Manufacturing Technology by : AnilK. Bhowmick
Download or read book Rubber Products Manufacturing Technology written by AnilK. Bhowmick and published by Routledge. This book was released on 2018-10-03 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides authoritative coverage of compounding, mixing, calendering, extrusion, vulcanization, rubber bonding, computer-aided design and manufacturing, automation and control using microprocessors, just-in-time technology and rubber plant waste disposal.
Book Synopsis Organic Accelerators of the Vulcanization of Rubber by : United States. War Production Board. Educational Committee
Download or read book Organic Accelerators of the Vulcanization of Rubber written by United States. War Production Board. Educational Committee and published by . This book was released on 1943 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highly Efficient Methods for Sulfur Vulcanization Techniques, Results and Implications: Selection and Management of Rubber Curatives by : Ali Ansarifar
Download or read book Highly Efficient Methods for Sulfur Vulcanization Techniques, Results and Implications: Selection and Management of Rubber Curatives written by Ali Ansarifar and published by Balboa Press UK. This book was released on 2022-02-09 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, two new methods are described and supported by extensive experimental results that measure the amounts of a sulfur-donor thiuram accelerator and a sulfenamide thiazole accelerator needed to provide monomolecular coverage of zinc oxide. These methods use zinc oxide with only one accelerator and no stearic acid to produce two single additives, that can efficiently cure rubber, despite using fewer chemicals. This is a departure from the past when efficiency in sulfur vulcanization was achieved by using a high volume of these chemicals. A few sulfur-donor accelerators that exist produce highly toxic nitrosamines during high-temperature mixing and curing. When safer accelerators are on hand to treat the zinc oxide, a suitable single additive will be available to replace the current sulfur cure systems in industrial rubber formulations. This will bring huge benefits to the manufacturers and users of these chemicals. It is preferable to use zinc oxide to determine the precise amount of the accelerator required for a satisfactory cure rather than relying on outdated methods that need to be modified. A software is also developed to help with the selection and management of zinc oxide and the accelerators for the sulfur vulcanization. Green rubber products are within reach.
Book Synopsis The Mechanism of the Action of Certain Organic Accelerators of Vulcanization by : Samuel Eldon Cotter
Download or read book The Mechanism of the Action of Certain Organic Accelerators of Vulcanization written by Samuel Eldon Cotter and published by . This book was released on 1924 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reverse Engineering of Rubber Products by : Saikat Das Gupta
Download or read book Reverse Engineering of Rubber Products written by Saikat Das Gupta and published by CRC Press. This book was released on 2013-09-19 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reverse engineering is widely practiced in the rubber industry. Companies routinely analyze competitors’ products to gather information about specifications or compositions. In a competitive market, introducing new products with better features and at a faster pace is critical for any manufacturer. Reverse Engineering of Rubber Products: Concepts, Tools, and Techniques explains the principles and science behind rubber formulation development by reverse engineering methods. The book describes the tools and analytical techniques used to discover which materials and processes were used to produce a particular vulcanized rubber compound from a combination of raw rubber, chemicals, and pigments. A Compendium of Chemical, Analytical, and Physical Test Methods Organized into five chapters, the book first reviews the construction of compounding ingredients and formulations, from elastomers, fillers, and protective agents to vulcanizing chemicals and processing aids. It then discusses chemical and analytical methods, including infrared spectroscopy, thermal analysis, chromatography, and microscopy. It also examines physical test methods for visco-elastic behavior, heat aging, hardness, and other features. A chapter presents important reverse engineering concepts. In addition, the book includes a wide variety of case studies of formula reconstruction, covering large products such as tires and belts as well as smaller products like seals and hoses. Get Practical Insights on Reverse Engineering from the Book’s Case Studies Combining scientific principles and practical advice, this book brings together helpful insights on reverse engineering in the rubber industry. It is an invaluable reference for scientists, engineers, and researchers who want to produce comparative benchmark information, discover formulations used throughout the industry, improve product performance, and shorten the product development cycle.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1973 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
