热应力-应变对线路板热物理改性影响研究

The effect of the thermal stress and strain on the heat physical modification of circuit board

文章根据废电路板材料热、力学性质差异,提出了加热改性预处理的技术方法.该方法基于物理改性和微观破坏,以提高破碎解离效率,实现金属与非金属的高度解离.通过加热改性处理,结合ANSYS有限元热应力模型,对改性作用进行分析;从环境风险管理的角度,评估热处理过程环境影响;从分离产物及其再生利用角度对加热改性处理后分离的非金属物料进行表征.研究结果可以为废电路板机械物理技术的提升和新工艺的开发提供理论基础,并为其他层压复合材料类废弃物资源化处理技术提供方法参考.

According to the difference of waste material thermal and mechanical properties circuit, a method of heating the pretreatment of modified technology is proposed. This method is based on physical modification and microscopic damage to increase crushing disintegrates efficiency and realizes disintegrating the metal and the non - metallic highly. Analyze the modification effect through the heating modification treatment com- bined with ANSYS finite element model; Assess the effect of the heat treatment process on environmental from the aspect of environmental risk management. Indicate characters of the modification of the heating sep- aration nonmetal materials by separation products and their recycling. The result provides the theoretical foundation for the waste circuit board mechanical and physical technology promotion and new process, and provides the reference method for other laminated composite material or wastes treatment technology.