ELECTRICAL INSULATION HEAT-RESISTANT PAPER WITH USING PARA-ARAMID FIBRIDS AND PULP AS BINDER.

The possibility of using of para-aramid fibrids and pulp as a binder of para-aramid fibers during production of electrical insulation heatresistant paper have been studied. It has confirmed by microscopy the presence branched structures in para-aramid pulp and fibrids, as well as presence of the film structure in fibrids. The Influence of consumption of fibrids and pulp on general indicators such as density, tensile strength, elongation, tear resistance, electric strength, capillary rise, air permeability of non calendered and calendered heat resistant insulating paper have been obtained. It have been determined that after calendering the density of para-aramid paper increases about by three times. Based on the obtained results the optimal consumption of a binder has been found. It has been showed that using para-aramid fibrids or pulp as a binder is possible during production of para-aramid electrical insulation paper. The using of fibrids (at the same consumption) more increases the main indicators of quality of para-aramid paper than pulp. [ABSTRACT FROM AUTHOR]