Final answer:
Polysulfide rubber, also known as mercaptan rubber, is formed by the reaction of sulfur with mercaptan molecules. The mixing time for polysulfide rubber can be determined by monitoring changes in viscosity and the transformation of the liquid into a solid state.
Step-by-step explanation:
Polysulfide rubber, also known as mercaptan rubber, is a type of rubber that is formed by the reaction of sulfur with mercaptan molecules. The mixing time for polysulfide rubber depends on various factors such as the viscosity of the liquid, the temperature, and the degree of polymerization. When rhombic sulfur melts, it forms polymeric chains of sulfur atoms that combine end to end and tangle with one another. As the liquid gradually darkens in color and becomes more viscous, it eventually solidifies into a rubber-like mass called plastic sulfur. The mixing time for polysulfide rubber can be determined by monitoring the changes in viscosity and the transformation of the liquid into a solid state.