Introduction to the advantages and disadvantages of NBR foaming

NBR foaming has excellent oil resistance due to the introduction of acrylonitrile into its molecules. With the increase of acrylonitrile content, strength, hardness, wear resistance, heat aging resistance, and chemical resistance all improve, but resilience and cold resistance decrease.

(1) Advantages: Good oil resistance, also resistant to gasoline and light oil; Excellent wear resistance, heat aging resistance, and water resistance; The strength and heat resistance (with a maximum operating temperature of 130 ℃) are slightly better than those of styrene butadiene rubber; Low resistance to organic solvents; Except for base rubber and polysulfide rubber, the airtightness is second only to chloroprene rubber.

(2) The disadvantage is easy to cause bending and cracking, and the dynamic performance is poor; Poor ozone resistance; Less flame retardant than chloroprene rubber, and produces toxic gases during combustion; Low temperature performance is relatively poor, with a cold resistance temperature of -10-20 ℃, which is prone to embrittlement at low temperatures; Poor stability in water vapor or chlorine gas; Poor electrical insulation performance; The production cost is higher than that of chloroprene rubber, making it one of the high priced rubbers.

This article is a summary provided by Ningbo Dongsheng Rubber Products Co., Ltd. The company website is www.dscn.com. Welcome to inquire!