High performance XNBR vulcanized rubber containing graphene oxide and its preparation method
A vulcanized rubber and high-performance technology, which is applied in the field of preparation of rubber-like polymer composite materials, can solve the problems of not mentioning the application effect of carboxyl nitrile butadiene rubber, no implementation effect, and more reaction steps, etc., so as to improve mechanical strength, The effect of improving the thermal conductivity and improving the utilization rate
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[0020] Example 1
[0021] Weigh 10g of graphene oxide, 50g of sodium lauryl sulfate, and dissolve in 1L of deionized water, with an ultrasonic power of 125W, a temperature of 20°C, ultrasonic for 6h, and a centrifugal separation of the upper centrifugal liquid at a speed of 6000 rpm. Take the upper layer of liquid to obtain a monolithic graphene oxide suspension. The thickness of graphene oxide see figure 2 .
[0022] Weigh the corresponding quality of the single-layer graphene oxide suspension, ultrasonic for 20min, weigh 30g of XNBR latex, under magnetic stirring, add the graphene oxide solution (the net content of graphene oxide is 0.3g) into the latex, ultrasonic for 1h, Add 0.15 grams of antioxidant WL. Adjust the pH of the latex to about 2, add the latex to the KCl solution for flocculation, and then repeatedly wash the flocculated latex with deionized water at 100°C and dry it at 110°C for 2h. Weigh 10g graphene / XNBR (masterbatch), add 0.3g vulcanizing agent DCP, and mix...
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[0023] Example 2
[0024] Repeat the method of Example 1 according to the specified content of each component, but use 0.9 g of graphene oxide, 0.3 g of antioxidant WL, and 0.3 g of DTBP in the formula. The tensile strength of the obtained vulcanizate is 15.61MPa and the elongation at break Rate of 177%, 100% tensile strength 7.74MPa, Shore hardness 77, maximum thermal decomposition temperature 473. °C, thermal conductivity coefficient 0.233W×mK-1, thermal diffusion coefficient 0.096mm 2 ·S -1 . Oil absorption (ASTM1 # Oil) after treatment, the tensile strength is 10.4MPa, the elongation at break is 176%, and the Shore hardness is 73.
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[0025] Example 3
[0026] Repeat the method of Example 1 according to the specified content of each component, but use 1.2 grams of graphene oxide, 0.15 grams of antioxidant 4010NA, and 0.2 grams of DCP in the formula. The tensile strength of the obtained vulcanizate is 12.9MPa and the elongation at break Rate 191%, 100% tensile strength 5.0MPa, Shore hardness 77, maximum thermal decomposition temperature 473.°C, thermal conductivity coefficient 0.270W×mK-1, thermal diffusion coefficient 0.096mm 2 ·S -1 . Oil absorption (ASTM1 # ) After treatment, the tensile strength is 12.1MPa, the elongation at break is 191%, and the Shore hardness is 75.
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