Abstract
This paper presents the results of investigating the thermal stability, flammability, and fire hazard of cross-linked EVM/NBR blends unfilled and filled with halogenless flame-retardant compounds such as melamine cyanurate or magnesium hydroxide. The thermal analysis of the blends was carried out in the atmosphere of air. The activation energy of the composite destruction was determined by two non-isothermal methods: Flynn–Wall–Ozawa’s and Kissinger’s methods. The flammability of the composites obtained was determined by the method of oxygen index and on the basis of their combustion in air. The fire hazard of the vulcanizates investigated was determined with the use of a cone calorimeter and on the basis of toxicometric parameters W LC50SM. The test results have shown that the flame retardants used increase the thermal stability of the cross-linked blends and decrease their flammability, and thereby allow one to obtain self-extinguishing or non-flammable polymeric materials. The cross-linked EVM/NBR blends filled with these flame-retardant compounds are characterized by good mechanical properties and reduced fire hazard.
Highlights
Elastomers and materials made of them are commonly used almost in all fields of live
This paper presents the results of investigating the thermal stability, flammability, and fire hazard of crosslinked EVM/NBR blends unfilled and filled with halogenless flame-retardant compounds such as melamine cyanurate or magnesium hydroxide
The thermal properties of cross-linked EVM/NBR blends depend on the content of NBR rubber
Summary
Elastomers and materials made of them are commonly used almost in all fields of live. From the review of literature data, it follows that 55–80 % of all the fatal accidents during fires are caused by poisoning with the products of thermal decomposition and combustion as well as smoke [1, 2]. These penetrate human organism as a result of inhalation and absorption by skin. The foundation of action aimed at the reduction in human losses is the laboratory test results including the measurements of the potential formation rate of thermal decomposition and combustion products, quantity and rate of smoke emission under set combustion conditions, heat quantity emitted, increase in oxygen deficit, and mutual relations between these parameters. Melamine cyanurate (CM) (POCh Gliwice), magnesium hydroxide (Martinswerk, GmbH), and Magnifin H5 (Mg), were used as flame retardant and were incorporated into L450/NBR30 or L800/NBR30 mixtures in the following quantities: melamine cyanurate 50 phr magnesium hydroxide 60 or 80 phr
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
