真空绝热板阻隔膜PA/VMPET/Al/PE热封工艺

Heat-Sealing Process of PA/VMPET/Al/PE Film of Vaccum Insulation Panel

真空绝热板阻隔膜PA/VMPET/Al/PE是一种多层复合阻隔膜,是真空绝热板的重要候选膜材.通过实验研究了热封温度、时间、压力对其强度的影响,同时采用Matlab软件对热封工艺参数进行优化,得出最佳的热封工艺.利用DSC对PA/VMPET/Al/PE进行热分析.实验结果表明：热封温度是影响热封强度的最显著因素,当热封温度为160 ～170℃,热封时间为1.0～2.0 s,热封压力为0.2～0.4 MPa时,热封边的热封强度良好.Matlab软件优化最佳热封工艺参数值为：热封温度167℃,热封时间1.80 s,热封压力0.34 MPa,该模拟优化热封工艺参数与实验值一致.

PA/VMPET/Al/PE film of vaccum insulation panel is a kind of multilayer laminate envelope,which is one of the most candidates evelope materials.In this paper,the effect of heat-sealing temperature,heat-sealing time and heat-sealing pressure on the heat-sealing strength were investigated.Simultaneously,the process parameters of heat-sealing film was optimized using m-atlab software.Thermal analysis of PA/VMPET/Al/PE was carried out by using differential scanning calorimeter etry （DSC）.The results showed that the effect of heat-sealing temperature on heat-sealing strength was the most significant in the three parameters.The heat-sealing strength presented good at heat sealing temperature,heat sealing time and heat sealing pressure of 160 to 170℃,1.0 to 2.0 s,0.2 to 0.4 MPa,respectively.The optimal process parameters were simulated by Matlab software,heat-sealing temperature,heat-sealing time and heat-sealing pressure were 167℃,1.80 s and 0.34 MPa,respectively.The result shows that the optimal process parameters were consistent with experimental values.