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PVC塑料胶中的溶胶凝胶转变
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| A polymeric gel is a three dimensional network forming from flexible chains through chemical crosslinking or physical interaction. The transition from the liquid state (sol) to the solid state (gel) is called the sol-gel transition and the critical point for the transition is defined as the gel point. To study a gelling material, it is important to have a method to determine the gel point in an accurate and reproducible manner. Rheologically, the independence of the loss tangent of frequency at the gel point has been widely used to measure the gel point for chemical and physical gels. |
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2016-06-21 16:59:28, 80.83 K
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