A method for detecting carbon black particle size in nitrile rubber
A technology of nitrile rubber and carbon black, which is applied in the preparation of test samples, measuring devices, particle size analysis, etc., can solve the problems affecting the detection of carbon black particle size, destroying the shape of carbon black, etc., and achieve strong operability Effect
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Embodiment 1
[0106] The nitrile rubber sample was cut into pieces, and then subjected to liquid nitrogen freeze pulverization using a liquid nitrogen freeze pulverizer. 0.5 g of nitrile rubber powder was placed in 10 mL of ethylene glycol, and heated to 90 °C for 15 min using a microwave reactor to obtain the first residual solid. Put the first remaining solid in a polytetrafluoroethylene inner tank, add 15 mL of 0.1 mol / L sodium hydroxide aqueous solution, cover the inner cover, put on a stainless steel outer tank, and then put it into a constant temperature drying oven at 100 °C C for 5 h. After cooling to room temperature, the solid was collected by filtration with a Buchner funnel, washed with deionized water until the pH became neutral, and the second residual solid was obtained. The second remaining solid is added in the Erlenmeyer flask, add 3 g of concentrated nitric acid, add 0.5 g of perchloric acid, place the Erlenmeyer flask in a preheated constant temperature numerical contro...
Embodiment 2
[0109] The nitrile rubber sample was cut into pieces, and then subjected to liquid nitrogen freeze pulverization using a liquid nitrogen freeze pulverizer. 0.5 g of nitrile rubber powder was placed in 10 mL of ethylene glycol, and heated to 130 °C for 3 min using a microwave reactor to obtain the first remaining solid. Put the first remaining solid in a polytetrafluoroethylene inner tank, add 15 mL of 15 mol / L sodium hydroxide aqueous solution, cover the inner cover, put on a stainless steel outer tank, and then put it into a constant temperature drying oven at 120 ° C for 0.5 h. After cooling to room temperature, the solid was collected by filtration with a Buchner funnel, washed with deionized water until the pH became neutral, and the second residual solid was obtained. The second remaining solid is added in the Erlenmeyer flask, add 3 g of concentrated nitric acid, add 0.5 g of perchloric acid, place the Erlenmeyer flask in a preheated constant temperature numerical contr...
Embodiment 3
[0112]The nitrile rubber sample was cut into pieces, and then subjected to liquid nitrogen freeze pulverization using a liquid nitrogen freeze pulverizer. 0.5 g of nitrile rubber powder was placed in 10 mL of ethylene glycol, and heated to 100 °C for 11 min using a microwave reactor to obtain the first residual solid. Put the first remaining solid in a polytetrafluoroethylene inner tank, add 15 mL of 0.5 mol / L sodium hydroxide aqueous solution, cover the inner cover, put on a stainless steel outer tank, and then put it into a constant temperature drying oven at 100 °C C for 3 h. After cooling to room temperature, the solid was collected by filtration with a Buchner funnel, washed with deionized water until the pH became neutral, and the second residual solid was obtained. The second remaining solid is added in the Erlenmeyer flask, add 3 g of concentrated nitric acid, add 0.5 g of perchloric acid, place the Erlenmeyer flask in a preheated constant temperature numerical contro...
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