【作者】 贾程瑛； 史海真； 王维娜； 刘文； 史贺； 李鸿凯； 季剑锋； 朱阳阳；

【Author】 JIA Chengying;SHI Haizhen;WANG Weina;LIU Wen;SHI He;LI Hongkai;JI Jianfeng;ZHU Yangyang;Quzhou Branch of China National Pulp and Paper Research Institute;Winbon Schoeller New Materials Co.,Ltd.;China National Pulp and Paper Research Institute Co.,Ltd.;China Light Industry Wuhan Design & Engineering Co.,Ltd.;

【机构】 中国制浆造纸研究院衢州分院； 华邦古楼新材料有限公司； 中国制浆造纸研究院有限公司； 中国轻工业武汉工程设计有限责任公司；

【摘要】 本研究采用湿式抄纸法制备了陶瓷填料导热纸（TC导热纸）,研究了助留剂阳离子聚丙烯酰胺（CPAM）添加量对导热填料（Al2O3）留着率的影响,探讨了Al₂O₃添加量、增强型化学助剂（阳离子型两性聚丙烯酰胺（CAmPAM）、阴离子型两性聚丙烯酰胺（AAmPAM）、湿强剂（PAE））添加量对TC导热纸强度的影响,并比较了BN、SiC、Al₂O₃导热纸的热导率。结果表明,随着CPAM添加量的增加,Al2O3单程留着率不断提高,CPAM添加量为0.025%～0.05%较佳。随着Al₂O₃添加量的增加,TC导热纸抗张指数减小,Al₂O₃添加量小于60%时,TC导热纸仍能获得较好的强度。添加0.2%的CAmPAM能显著提高TC导热纸的抗张指数且对Al₂O₃单程留着率影响较小,此时当Al₂O₃添加量分别为46%、55%、60%时,TC导热纸抗张指数分别为33.1、28.0、24.2 N·m/g。当Al₂O₃添加量为55%时,BN纸、SiC纸、Al₂O₃导热纸的导热系数相比纯浆纸分别提高了47.5%,9.0%,14.3%。BN是制备绝缘导热纸的理想导热填料。更多还原

【Abstract】 Thermal paper was prepared by wet papermaking method. The effects of the addition amount of retention aid on the retention rate of thermally conductive fillers were studied. The effects of the the content of thermally conductive fillers and the addition of enhanced chemical additives on the strength of thermally conductive paper were discussed. The thermal conductivity values of thermal papers with BN,SiC,and Al₂O₃,respectively,were compared. The results showed that the amount of Al₂O₃retained in the paper and its single-pass retention rate increased continuously with the increase of the addition amount of CPAM. The optimal addition amount of CPAM was 0.025%～0.05%. With the increased of Al₂O₃content,the tensile index of paper decreased. When the addition amount of Al₂O₃was less than 60%,the paper sheet could still obtain well strength. Adding 0.2% CAmPAM could significantly improve the tensile index of thermally conductive paper with little effect on the retention rate of Al₂O₃. When the addition amount of Al₂O₃was 46%,55%,and 60%,the tensile index was33.1,28.0,and 24.2 N·m/g,respectively. When the addition amount of Al₂O₃was 55%,the thermal conductivity values of thermal paper with BN,SiC and Al₂O₃were increased by 47.5%,9.0%,and 14.3%,respectively. BN is an ideal thermal conductive filler for preparing insulating thermal paper.更多还原