Abstract
The cellulose based pressboards from four well-known suppliers in China, which areChangzhou HuaDian Insulation Material Co., Ltd (HD), TaiZhou XinYuan Electrical EquipmentCo., Ltd (XY), Hunan GuangXin Electrical Technology (GX) and ShangHai YaZhong TradeDevelopment Co., Ltd (YZ) were analyzed and compared. The guarantee value of Figeholm’spressboard was taken as a reference. Mechanical results show that most pressboards have excellenttensile, compressive and flexural properties except for YZ pressboards. The ply adhesion was alsostudied by simple loading method to verify the bonding effect and only XY pressboard show nosliding. Electrical results show that all pressboards have a similar electrical strength while HD andXY pressboards show relatively lower dissipation factor value. Based on the mechanical andelectrical performance, XY pressboards are considered to be better as compared to others andcompetitive to Figeholm’s products.
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