RIIR/REPDM elastomer and preparation method thereof
An elastomer and elastic technology, applied in the field of recycled rubber and its preparation, to achieve the effect of simple preparation method
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Embodiment 1
[0022] In this example, the vulcanization system used is composed of sulfur, TMTD, and DM. The vulcanization activator is zinc oxide and stearic acid. The specific formula is: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 parts of DM, zinc oxide 5 parts, 3 parts stearic acid, 1.5 parts sulfur.
[0023] The RIIR / REPDM elastomer described in this embodiment, its preparation steps:
[0024] a. First pass RIIR and REPDM on the mill for several times to mix them evenly, then add zinc oxide and stearic acid, add accelerator after mixing evenly, and finally add sulfur; then pack the mixed rubber 10 times, mix Discharge evenly and store for 24 hours for use;
[0025] b. Return the film that has been parked for 24 hours and reload it for later use;
[0026] c. Put the remixed rubber in step b on a flat vulcanizer for vulcanization, the temperature is controlled at 160°C, and the t is measured with a rubber rotorless vulcanizer during vulcanization. 10 and t 90 ,M L a...
Embodiment 2
[0029] The difference between this example and Example 1 is that the type of accelerator has been changed, and the specific formula is: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of TMTD, 0.5 parts of M, 5 parts of zinc oxide, 3 parts of stearic acid, and 1.5 parts of sulfur . Table 2 shows the mechanical property test results of the RIIR / REPDM elastomer described in this example.
Embodiment 3
[0031] The difference between this embodiment and Example 1 is that the kind of accelerator has been changed, specific formula: 90 parts of RIIR, 10 parts of REPDM, 1.5 parts of BZ, 0.5 part of DM, 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of sulfur . Table 2 shows the mechanical property test results of the RIIR / REPDM elastomer described in this example.
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