studies on new binary accelerator systems in rubber at guatemala
Studies on New Binary Accelerator Systems in Rubber
definite accelerator activity of APT in the sulphur vulcanisation of these styrene butadiene rubber systems is indicated by the above valuesobtained. Considering the binary systems with TMTD, as the concentration of APT increases from 0.25 to 1.50 molar levels optimum cure time is reduced to one third and cure rate is seen to be doubled.
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Studies on a New Binary Accelerator System for the Sulfur
George Mathew, P. Viswanathan Pillai, and A. P. Kuriakose (1992) Studies on a New Binary Accelerator System for the Sulfur Vulcanization of Styrene—Butadiene Rubber.Rubber Chemistry and Technology: May 1992, Vol. 65, No. 2, pp. 277-292.
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Studies on a new binary accelerator system
It is well known that the use of binary accelerator systems in rubber vulcanization provide better physical and chemical properties to the vulcanizates. The present work reports the results obtained on the study of amidinothiourea as a secondary
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Sulphur Vulcanisation of Styrene Butadiene Rubber using
Sulphur Vulcanisation of Styrene Butadiene Rubber using New Binary Accelerator Systems ABI SANTHOSH APREM* AND SABU THOMAS SchoolofChemicalSciences MahatmaGandhiUniversity Kottayam,Kerala,India KURUVILLA JOSEPH DepartmentofChemistry S.B.College,Changanacherry Kerala,India NEKTARIA MARIANTI BARKOULA AND J. KARGER KOCSIS InstituteofCompositeMaterials
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A new binary accelerator system for the sulfur
A new binary accelerator system for the sulfur vulcanization of natural rubber latex ... In the present study 1‐phenyl‐2,4‐thiobiuret (DTB II) and 1,5 ... (CBS) in the vulcanization of natural rubber latex. These binary systems were found to be very effective in reducing the optimum vulcanization time. Also it was noted that 1‐phenyl ...
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Cyriac Mathew's research works | Cochin University
A study of a binary accelerator system using amidinothiourea as a secondary accelerator with mercaptobenzothiazyl disulfde (MBTS), in sulphur vulcanization of natural rubber has been undertaken.
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The mechanical properties, curing characteristics, and swelling behaviour of vulcanized natural rubber with a novel binary accelerator system are investigated. Results indicate that the mechanical properties were improved. Crosslinking density of vulcanized natural rubber was measured by equilibrium swelling method. As a result, the new binary accelerator was found to be able to improve both ...
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The Effect of Novel Binary Accelerator System
The mechanical properties, curing characteristics, and swelling behaviour of vulcanized natural rubber with a novel binary accelerator system are investigated. Results indicate that the mechanical properties were improved. Crosslinking density of vulcanized natural rubber was measured by equilibrium swelling method. As a result, the new binary accelerator was found to be able to improve both ...
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Insight into Vulcanization Mechanism of Novel Binary
Insight into Vulcanization Mechanism of Novel Binary Accelerators for Natural Rubber * Shu-yan Yang a , Zhi-xin Jia b** , Lan Liu b , Wei-wen Fu b , De-min Jia b and Yuan-fang Luo b
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Studies on Novel Binary Accelerator System in Sulfur
Studies on Novel Binary Accelerator System in Sulfur Vulcanization of Natural Rubber Article in Journal of Applied Polymer Science 90(12):3173 - 3182 · December 2003 with 147 Reads
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Studies on New Binary Accelerator Systems in Rubber
STUDIES ON NEW BINARY SYSTEMS CONTAINING AMIDINO PHENYL THIOUREA IN SULPHUR VULCANISATION OF NATURAL RUBBER Natural rubber is the preferred polymer in many areas ofrubber use. This is because of its superior building tack, green stock strength, better processing, high resilience and excellent dynamic properties. The most
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STUDIES ON THE EFFECT OF AMIDINO PHENYL THIOUREA IN THE VULCANISATION OF POLYCHLOROPRENE RUBBER (CR) Neoprene is the generic name for polymers of 2-chloro1,3 butadiene (chloroprene) introduced commercially by DuPont in 1931. The molecular structures of neoprene polymers are primarily trans 1,4 chloroprene units
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Studies on New Binary Accelerator Systems in Rubber
Our study involves the investigations on different systems of vulcanisation of elastomers or their blends using new binary accelerator combinations. In this context we thought it worthwhile to deal in some detail on the use of vulcanising agents, accelerators, fillers etc. in rubber vulcanisation. 1.1 VULCANISING (CURING) AGENTS
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Studies on New Binary Accelerator Systems in Rubber
Studies on the effect of APT in filled natural rubber systems are included in part B of this chapter. Carbon black and silica were used as fillers in this study. It is found that APT can be effectively used as an accelerator in the binary systems containing MBTS, TMTD or CBS in NR filled systems.
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Studies on a new binary accelerator system
It is well known that the use of binary accelerator systems in rubber vulcanization provide better physical and chemical properties to the vulcanizates. The present work reports the results obtained on the study of amidinothiourea as a secondary
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Studies on a New Binary Accelerator System for the Sulfur
The chemical reactions involved when a binary accelerator system is used in rubber vulcanization varies with the systems used. The exact mechanism of these reactions is not fully understood even now. Accelerators in which sulfur is combined as S—S, C—S—C, or S—N are generally inactive at low vulcanization temperatures because of the high thermal stability of their sulfur bonds.
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A new binary accelerator system for the sulfur
In the present study 1‐phenyl‐2,4‐thiobiuret (DTB II) and 1,5‐diphenyl‐2,4‐dithiobiuret (DTB III), which are more nucleophilic than thiourea and which vary in their nucleophilic reactivity, were studied as secondary accelerators along with tetramethyl thiuram disulphide (TMTD) and N‐cyclohexylbenzothiazyl sulphenamide (CBS) in the vulcanization of natural rubber latex. These binary systems were found to be very effective in reducing the optimum vulcanization time.
Send InquiryThe Effect of Novel Binary Accelerator System
() Using the numerical analysis of interaction, operational modelling, mechanical properties, and kinetics of cure reaction of natural rubber vulcanizate cured with a new accelerator, it can be concluded, at a fine accord, that the addition of the new binary accelerator was found to increase the rate of vulcanization significantly.
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