NHN insulation paper, DMD and DMDM three kinds of insulation material difference


Release time:

2023-05-25

NHN insulation paper manufacturers introduced DMDM refers to four layers of composite insulation paper, DMD refers to three layers of composite insulation paper, in which D is Dacron and refers to Juku non-woven fabric. M refers to poly cool film. DMD insulation paper is a composite product with two layers of polyester on the outside and a layer of poly-film in the middle.

NHN insulation paper manufacturers introduced DMDM refers to four layers of composite insulation paper, DMD refers to three layers of composite insulation paper, in which D is Dacron and refers to Juku non-woven fabric. M refers to poly cool film. DMD insulation paper is a composite product with two layers of polyester on the outside and a layer of poly-film in the middle.

The number of layers is different. It is composed of polyester film and polyester fiber non-woven fabric with adhesive from two to four layers, DMD for three layers and DMDM for four layers. All have good mechanical and electrical properties, suitable for small and medium-sized motor slot insulation, turn-to-turn and interlayer insulation, gasket insulation, transformer insulation and other electrical insulation, heat-resistant grade B.

NHN insulation paper is composed of a layer of polyimide film in the middle and Nomex paper (DuPont paper) on both sides. It is a three-layer electrical insulation paper with a heat resistance grade of H (180 ℃). It has good mechanical properties, such as tensile strength, edge tear resistance and good electrical strength. Smooth surface, when the production of low-voltage motor using automatic offline machine can ensure trouble-free NHN is mainly used in high heat-resistant performance of the motor slot, slot cover and phase insulation, in addition can also be used as transformer or other electrical insulation layer.