In rubber production, how is the Mooney index controlled, and what are its effects on the products?
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This post was last edited by ljtjbx on 2015-7-31 15:52. In rubber production, how is the Mooney index controlled, and what are its effects on the products? Once there are issues with the Mooney index, how should it be adjusted, and what impact does it have on the products manufactured in the downstream rubber industry? For example, when using styrene-butadiene rubber to make tires, what are the requirements regarding the Mooney index? ! Please discuss any issues you fellow sailors are aware of or have encountered when using it!
The Mooney index of rubber products has a significant impact on their processing and practical application. Taking HNBR as an example, there are two reasons for high Mooney viscosity: 1. Long-chain branching occurs during the hydrogenation reaction; 2. The AN (nitrile) content in the raw rubber is too high. Ways to reduce Mooney viscosity without affecting the performance parameters of other products include: 1. Softening the initial reaction conditions (the temperature should not rise too quickly or too high, and the pressure should not be too high); 2. Adding radical inhibitors to the reaction mixture; 3. Incorporating LNBR as a compounding agent (in moderation), as excessive use can affect other physical properties of the product
Well, the scope of this question is too broad; it should be focused on a specific type of rubber. The type of rubber determines its application – for example, styrene-butadiene rubber can be either solution-polymerized or emulsion-polymerized styrene-butadiene rubber.