连续法聚氨酯彩钢夹芯板厚度偏差影响因素的研究  

Influence Factors of Thickness Deviation of PU Color Steel Sandwich Insulation Panel by Continuous Process

作　　者：窦忠山 刘访艺 王磊 张宝银[1] 李晓静 刘永亮 DOU Zhongshan;LIUFangyi;WANG Lei;ZHANG Baoyin;LI Xiaojing;LIU Yongliang(Wanhua Energysav Science&Technology Group Co.Ltd,Yantai 264006,China;Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]万华节能科技集团股份有限公司,山东烟台264006 [2]郑州大学,河南郑州450001

出　　处：《聚氨酯工业》2024年第2期37-39,共3页Polyurethane Industry

摘　　要：结合实际生产,详细介绍了配方及生产工艺对聚氨酯彩钢夹芯板厚度尺寸偏差的影响。结果表明:随着聚酯多元醇羟值的提高,泡沫交联密度增大,板材厚度尺寸偏差减小;随着配方中水含量的增加,反应过程中生成大量脲基并释放大量的热,热量越大则出层压机板材的泄压膨胀越严重,在熟化过程中刚性的脲基阻止了板材的回缩,导致板材厚度偏差较大;生产线速越慢,泡沫在双履带层压机中熟化时间越长,泡沫反应越完全,强度提升越大,板材厚度尺寸偏差越小。Combined with the actual production,the influence offormula and production process on the thickness deviation of polyurethane color steel sandwich panel were introduced in detail.The results showed that,with the increase of hydroxyl value of polyester polyol,the crosslinking density of the foam increased and the thickness deviation decreased.With the increase of water content in the formula,a large number of urea groups were generated and a lot of heat was released in the reaction process.When the heat was greater,the pressure relief expansion of the board was more serious out of the machine.The rigid urea groups prevented the shrink of the sheet during the curing process,which lead to the large thickness deviation of the board.As the production line speed slowed down,the curing time of the foam in the double⁃track laminating machine was longer,the reaction of foam was more complete,the strength improve greater,and the thickness deviation of the plate was smaller.

关 键 词：聚氨酯 聚异氰脲酸酯 彩钢夹芯板 厚度尺寸偏差 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]