Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for those who participate； Question 52
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When natural rubber is mixed using an open-type rubber mixing machine, the roller temperature is 50–60°C; when a internal mixer is used, the single-stage method is employed. For styrene-butadiene rubber, the single-stage method is used when mixed with an internal mixer. For neoprene, the roller temperature is 40–50°C when mixed using an open-type rubber mixing machine, while the （ ） method is used when an internal mixer is utilized. A Single-stage method, Single-stage method B Single-stage method, Two-stage method C Two-stage method, Single-stage method D Two-stage method, Two-stage method (D)
When natural rubber is mixed using an open-type rubber mixing machine, the roller temperature is 50–60°C; when a internal mixer is used, the single-stage method is employed. For styrene-butadiene rubber, the single-stage method is used when mixed with an internal mixer. For neoprene, the roller temperature is 40–50°C when mixed using an open-type rubber mixing machine, while the (D) method is used when an internal mixer is utilized. A Single-stage method, Single-stage method B Single-stage method, Two-stage method C Two-stage method, Single-stage method D Two-stage method, Two-stage method
When natural rubber is mixed using an open-type rubber mixing machine, the roller temperature is 50–60°C; when a internal mixer is used, the single-stage method is employed. For styrene-butadiene rubber, the single-stage method is used when mixed with an internal mixer. For neoprene, the roller temperature is 40–50°C when mixed using an open-type rubber mixing machine, while the single-stage method is used when an internal mixer is utilized. Options: A. Single-stage method, single-stage method; B. Single-stage method, two-stage method; C. Two-stage method, single-stage method; D. Two-stage method, two-stage method. Answer: D
For natural rubber, the two-stage method is used; when mixing it with an open-type rubber mixer, the roller temperature is set at 50–60°C. When using a internal mixer, the single-stage method is employed. For styrene-butadiene rubber, the two-stage method is used when mixing it with an internal mixer. For neoprene, the roller temperature is 40–50°C when using an open-type rubber mixer, and the two-stage method is used when using an internal mixer
When mixing styrene-butadiene rubber using an open-type rubber mixing machine, the roller temperature is 50–60°C; when using a internal mixer, the one-stage method is employed. For styrene-butadiene rubber mixed with an internal mixer, ( ) is used, while for neoprene rubber, the roller temperature is 40–50°C when using an open-type rubber mixing machine, and (D) is used when using an internal mixer
When natural rubber is mixed using an open-type rubber mixing machine, the roller temperature is 50–60°C; when a internal mixer is used, the single-stage method is employed. For styrene-butadiene rubber, the single-stage method is used when mixed with an internal mixer. For neoprene, the roller temperature is 40–50°C when mixed using an open-type rubber mixing machine, while the （ ） method is used when an internal mixer is utilized. A. Single-stage method, single-stage method B. Single-stage method, two-stage method C. Two-stage method, single-stage method D. Two-stage method, two-stage method Answer: D
When natural rubber is mixed using an open-type rubber mixer, the roller temperature is 50–60°C; when a internal mixer is used, the single-stage method is employed. For styrene-butadiene rubber, the internal mixer is used with the two-stage method. When neoprene is mixed using an open-type rubber mixer, the roller temperature is 40–50°C; when an internal mixer is used, the two-stage method is used. A Single-stage method, Single-stage method B Single-stage method, Two-stage method C Two-stage method, Single-stage method D Two-stage method, Two-stage method