Regenerative vulcanized butadiene nitrile rubber and preparation thereof
A technology for vulcanizing nitrile butadiene rubber and reclaimed rubber, applied in chemical recycling, plastic recycling, recycling technology, etc., can solve problems such as difficulty in vulcanization, loss of tire manufacturing, and difficulty in crushing costs in the recycling industry.
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Embodiment 1
[0068] A kind of regenerated vulcanized nitrile rubber and preparation method thereof:
[0069] A. Sorting, arranging and classifying the waste vulcanized nitrile rubber, and shearing and pulverizing through open rubber mixing or open groove roller rubber breaking machine. The particle size of the pulverized rubber material is 4 mesh granular or with continuous wire Small block;
[0070] B. Put 39kg of crushed rubber into a self-heating mixer and stir. When the temperature rises to 70°C, add 50kg of desulfurizer and 1.5kg of methacrylic acid as a cocatalyst under continuous stirring. Accelerator is triethanolamine 0.8kg, softening agent is calcium carbonate 0.8kg, constantly stirs;
[0071] C. When the temperature in the mixer reaches 90°C, add 3kg of rosin as a solid tackifier, 0.8kg of Coumaron and 0.4kg of benzoic acid as a plasticizer;
[0072] D. When the temperature reaches 110°C, add 2kg of active modifier rosin and 1kg of coomaron, and when the temperature reaches 11...
Embodiment 2
[0089] A kind of regenerated vulcanized nitrile rubber and preparation method thereof:
[0090] A. Sorting, arranging and classifying the waste vulcanized nitrile rubber, and shearing and crushing it through an open rubber mixing or an open groove roller breaker. The particle size of the crushed rubber material is 20 mesh granular or with wire Small lumps.
[0091] B. Put 80kg of the crushed rubber into a self-heating mixer and stir. When the temperature rises to 90°C, add 15kg of desulfurizer and 0.5kg of methacrylic acid as the co-catalyst under constant stirring. Accelerator is triethanolamine 0.3kg, and softening agent is calcium carbonate 1.2kg, constantly stirs;
[0092] C. When the temperature in the mixer reaches 130°C, add 1 kg of rosin as a solid tackifier, 0.2 kg of Coumaron and 1 kg of benzoic acid as a plasticizer;
[0093] D. When the temperature reaches 140°C, add 0.8kg of rosin and 0.8kg of coomalon as active modifiers, and when the temperature reaches 150°C,...
Embodiment 3
[0110] A kind of regenerated vulcanized nitrile rubber and preparation method thereof:
[0111] A. Sorting, arranging and classifying waste vulcanized nitrile rubber, and shearing and crushing through open rubber mixing or open groove roller rubber breaker. The particle size of the crushed rubber material is 10 mesh granular or with continuous wire Small lumps.
[0112] B. Put 50kg of crushed rubber into a self-heating mixer and stir. When the temperature rises to 80°C, add 45kg of desulfurizer and 0.6kg of methacrylic acid as a cocatalyst under continuous stirring. Accelerator is triethanolamine 0.2kg, and softening agent is calcium carbonate 1kg, constantly stirs;
[0113] C. When the temperature in the mixer reaches 110°C, add 1.5kg of rosin as a solid tackifier, 0.4kg of coomalon as a plasticizer and 0.8kg of benzoic acid;
[0114] D. When the temperature reaches 120°C, add 1.2kg of rosin and 0.9kg of Coomalon as active modifiers, and when the temperature reaches 130°C, ...
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