A Novel Approach to Non-Destructive Rubber Vulcanization Monitoring by the Transient Radar Method

Tayebi, Salar; Pourkazemi, Ali; Ospitia, Nicolas; Thibaut, Kato; Kamami, Olsi; Stiens, Johan

doi:10.3390/s22135010

Cited by 1 publication

(1 citation statement)

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“…The idea of the cross-linking (vulcanization) of elastomers (rubbers) is to produce intermolecular cross-links between linear or branched rubber macromolecules leading to an effective three-dimensional spatial network as a result of physical processes and chemical reactions [ 1 , 2 , 3 ]. The curing of elastomers leads to a loss of solubility and the elimination of the translation movements of macromolecules and a considerable reduction in the plastic deformation of elastomers.…”

Section: Introductionmentioning

confidence: 99%

The Morphology, Mechanical and Dynamic Properties, Fire Hazard and Toxicity of Chloroprene and Butadiene Rubber Composites Cross-Linked with Zinc

et al. 2023

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This paper presents the influence of zinc on the cross-linking process, mechanical and dynamic properties, morphologies and balance of thermal degradation of blends containing chloroprene rubber (CR) and butadiene rubber (BR). The novel aspect of this research is a comprehensive approach presenting a new curing agent for the CR/BR blends to increase their cross-linking density and final properties, including non-flammability and low fire hazard. This is due to the need to find an alternative to zinc oxide, which is the standard curing agent for chloroprene rubber. The regulations of the European Union enforce a significant limitation on the use of this compound in elastomer technology, due to its harmful effect on aquatic organisms. In this paper, the CR/BR composites were cured with zinc and filled with natural silica fillers (sillitin or chalcedonite) or synthetic silica filler (aerosil). The investigation focused on the morphology characterization of the obtained compounds, their cross-linking degree, swelling, mechanical and dynamic properties, fire hazard and toxicity. The structure of cured CR/BR blends was characterized via scanning electron microscopy (SEM). The fire resistance studies were performed using cone calorimetry or oxygen index methods, whereas toxicity tests were performed with the use of the FB-FTIR (fluidized bed reactor coupled with FTIR analyzer) method. The results showed that obtained CR/BR products were characterized by satisfactory final properties. The properties determined by the oxygen index and cone calorimetry methods, including the behaviors of the tested CR/BR vulcanizates in fire conditions, showed that the produced compounds were characterized by a low fire hazard and can be classified as non-combustible rubber products. However, the toxicity of the decomposition products, determined at 450, 550 and 750 °C, was very high.

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Section: Introductionmentioning

confidence: 99%