Effect of Organoclays on Fire Resistance of Siloxane Rubbers

Abstract

The technological progress constantly raises standards for items operated in rough conditions in order to improve their reliability in a wide range of operating temperatures, fire resistance and sustainability. Researches aimed at discovering flame retardant agents that would help to develop siloxane rubbers with increased fire-resistance are of great scientific interest and have a practical significance. We have studied the effect of aluminium hydroxide on the physical and mechanical properties and fire-resistance of siloxane rubbers. The study has shown that the aluminium hydroxide acts as an effective fire retardant at its content in the rubber over 40 % (wt.), however, it significantly decreases the physical and mechanical properties of the siloxane rubbers and causes difficulties in processing of the rubber mix. The research has shown that the additional introduction of organoclays (5 pts. wt.) improves the fire-resistance of such rubbers, the most effective being montmorillonites modified with alkylbenzyldimethylammonium chloride.

Thermoplastic Vulcanizates Filled with а Layered Silicate

“…At the same time, environmental issues and the possibility of recycling polymer composites are coming to the fore in the world. All these requirements are satisfied by thermoplastic vulcanizates, which are obtained by mixing elastomers with thermoplastics with simultaneous vulcanization of the elastomer [4][5][6][7][8][9]. Thermoplastic vulcanizates are considered one of the promising classes of polymer composite materials due to the lower cost of finished products, a wide temperature range of working capacity, a complex of high physicomechanical properties.…”

Effect of Organoclay on the Properties of Vulcanized Siloxane Rubber of the Brand SKTFV-803

“…An important role in the creation of siloxane rubbers belongs to modifiers of the chemical and physical type, as well as to fillers and plasticizers, which allow not only to improve the properties of rubbers, but also to reduce their cost [1]. It should be noted that at present time, research on the creation of nanocomposites based on polymers is actively developing [2][3][4][5][6][7][8][9][10][11][12][13][14]. Earlier studies established the high efficiency of using layered silicates -montmorillonites modified by quaternary ammonium salts (organoclays) [3][4][5][6][7][8][9][10][11][12][13][14] in vulcanized dimethylvinylsiloxane rubber of the brand SKTV-1 [9][10][11][12][13][14], which is manifested in the improvement of rubber properties such as resistance to swelling in solvents, thermo-and fire resistance.…”

“…It should be noted that at present time, research on the creation of nanocomposites based on polymers is actively developing [2][3][4][5][6][7][8][9][10][11][12][13][14]. Earlier studies established the high efficiency of using layered silicates -montmorillonites modified by quaternary ammonium salts (organoclays) [3][4][5][6][7][8][9][10][11][12][13][14] in vulcanized dimethylvinylsiloxane rubber of the brand SKTV-1 [9][10][11][12][13][14], which is manifested in the improvement of rubber properties such as resistance to swelling in solvents, thermo-and fire resistance. In this regard, studies on the effect of organoclay on the properties of vulcanized dimethylphenylvinylsiloxane rubber of the brand SKTFV-803 are of scientific interest and practical significance.…”