RFP_2019_03_Ansarifar.pdf (834.06 kB)
An alternative method for the vulcanization of rubber articles
journal contribution
posted on 2019-11-18, 11:37 authored by Ali Ansarifar, Kornkanok NoultaKornkanok Noulta, George WeaverGeorge Weaver, Upul Wijayantha-Kahagala-GamageZinc oxide was treated with a sulfenamide accelerator by vacuum evaporation of a suspension of ZnO in a solution of the accelerator in dichloromethane to provide a convenient single material component to use as additive. The optimum quantity of the accelerator in the additive was found to be 350 mg/g. A large batch of the surface-modified zinc oxide with this composition (referred to as the ‘TBBS/ZnO powder’) was then prepared. The effect of an increasing loading of the TBBS/ZnO powder on the cure properties of ethylene-propylene-diene rubber (EPDM) and polybutadiene rubber (BR) containing elemental sulfur was subsequently measured. When the loading of the TBBS/ZnO powder in the rubbers was raised progressively, the scorch time was unaffected and the optimum cure time reduced. The rate of cure kept rising until it reached an optimum. The crosslink density increased substantially as the loading of the TBBS/ZnO powder in the rubber was raised progressively. All the indications are that the use of the TBBS/ZnO powder in combination with sulfur in the cure system improves efficiency of the vulcanization process, reduces cost and harmful effects while also shortening the cure cycle. The surface modified TBBS/ZnO powder is a viable alternative chemical additive for the sulfur vulcanization of rubber.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
- Science
Department
- Chemistry
- Materials
Published in
Rubber Fibres Plastics InternationalVolume
14Issue
3Pages
184 - 188Publisher
Dr. Gupta VerlagVersion
- VoR (Version of Record)
Rights holder
© Dr. Gupta VerlagPublisher statement
This paper first appeared in RFP Rubber Fibres Plastics International, 14 (3), pp.184-188 and appears here with the permission of the publisher.Acceptance date
2019-03-24Publication date
2019-09-27Copyright date
2019ISSN
1863-7116Publisher version
Language
- en
Depositor
Dr Ali Ansarifar. Deposit date: 14 November 2019Usage metrics
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