知识与财富的链接
对添加CF/CNT复合填料的橡胶厚制品的硫化过程进行仿真,分析了硫化及后硫化效应对橡胶厚制品内部温度及硫化程度的影响。结果显示：在硫化升温过程中橡胶厚制品胶料模型内部存在较大的温度差,随着硫化时间的延长,模型芯部温度逐渐达到热源温度,而模型外部温度则一直保持高温状态;自然冷却过程中,橡胶厚制品胶料模型靠近外侧部位温度降低较快,温度在100 ℃以上保持时间较短,后硫化效应较弱;而橡胶厚制品胶料模型内部存在先升温后降温的现象,温度在100 ℃以上保持时间较长,后硫化效应越明显。综合来看,后硫化效应能够使橡胶厚制品内部区域持续短暂的升温,对厚制品内部区域的硫化具有促进作用。
The vulcanization process of rubber thick products with CF/CNT composite fillers was simulated,and the effects of vulcanization and post vulcanization on the internal temperature and degree of vulcanization of rubber thick products were analyzed.The results showed that there was a significant temperature difference inside the rubber material model of thick rubber products during the vulcanization heating process.As the vulcanization time increased,the core temperature of the model gradually reached the heat source temperature,while the external temperature of the model remained at a high temperature.During the natural cooling process,the temperature of the rubber material model of thick rubber products decreased rapidly near the outer side,and the holding time above 100 ℃ was relatively short,resulting in weak post vulcanization effect.However,there was a phenomenon of first heating up and then cooling down inside the rubber material model of thick rubber products.The longer the temperature was maintained above 100 ℃,the more obvious the post vulcanization effect becomesd.Overall,the post vulcanization effect could cause a sustained and brief temperature rised in the internal area of thick rubber products,promoting the vulcanization of the internal area of thick products.
