Silicon rubber material with synergetic inflaming retarding by nano inflaming retarding agent and nitrogen-phosphorus intumescent inflaming retarding agent and preparation method of silicon rubber material

Abstract

The invention discloses a silicon rubber material with synergetic inflaming retarding by a nano inflaming retarding agent and a nitrogen-phosphorus intumescent inflaming retarding agent and a preparation method of the silicon rubber material. The material is prepared from the following components in percentages by weight: 68.0 to 82.0 percent of silicon rubber, 0.5 to 5.0 percent of the nano inflaming retarding agent, 18.0 to 25.0 percent of the nitrogen-phosphorus intumescent inflaming retarding agent and 0.5 to 2.5 percent of vulcanizing agent. The rubber material provided by the invention does not contain halogen and other harmful substances, and cannot generate toxic and harmful gases to cause secondary pollution in a combustion process; the nano inflaming retarding agent is uniformly dispersed in a silicon rubber matrix; only a small quantity of the nano inflaming retarding agent is needed, so that the combustion performance of silicon rubber can be obviously decreased; moreover, the mechanical performance of the silicon rubber can be improved; the excellent inflaming retarding performance can be given to the silicon rubber through the nitrogen-phosphorus inflaming retarding agent; further, the inflaming retarding mechanisms of the nano inflaming retarding agent and the nitrogen-phosphorus inflaming retarding agent are both condensed phase inflaming retarding; a synergic effect is obvious; when the nano inflaming retarding agent and the nitrogen-phosphorus inflaming retarding agent are used in a compounding manner, not only can the inflaming retarding performance of the silicon rubber be improved, but also the mechanical performance of the silicon rubber can be maintained furthest.

Description

technical field [0001] The invention relates to the fields of polymer composite material blending and material flame retardancy, in particular to a flame-retardant silicone rubber material synergistically formed by a nano-flame retardant and a nitrogen-phosphorus expansion flame retardant and a preparation method thereof. Background technique [0002] Since the commercialization of silicone rubber in the 1940s, various silicone rubber products have emerged in an endless stream. Silicone rubber has excellent biocompatibility, chemical corrosion resistance, electrical insulation, etc., and is widely used in medical and health care, transportation, electronic appliances and other fields. . However, silicone rubber is extremely flammable, and once ignited, it will emit a lot of heat, which severely limits the application range of silicone rubber. Therefore, the flame retardant modification of silicone rubber is particularly important. [0003] At present, halogen flame retarda...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantage that the intumescent flame retardant deteriorates the mechanical properties of the matrix, and to provide a synergistic flame-retardant silicone rubber material and a preparation method thereof. The material of the present invention has both good Flame retardant and mechanical properties

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