The invention discloses a method for manufacturing a motor
brush by a rice
hull, and relates to the technical field of the preparation of the motor
brush. Preparation materials comprise 90-94 parts of rice
hull base
ceramic particles, 0.1-1 part of
adhesive, 0.1-0.8 part of lubricating agent, 1-5 parts of
copper powder and the like, wherein the rice
hull base
ceramic particle is obtained in a way that rice hull
powder and phenolic resin are subjected to high-temperature
carbonization after being mixed evenly at the ratio of 1-5:1. From the comprehensive utilization of the rice hull, the rice hull (
powder) and a phenolic resin high-temperature
carbonization product-rice hull
ceramic particle are used as the body material of the
brush, raw materials including a certain quantity of
solid lubricating agent,
adhesive,
copper powder and the like are used as auxiliary materials, and all materials are evenly stirred and are subjected to compression moulding and
calcination to obtain the motor brush. The method is suitable for manufacturing various classes of motors of brush components, and a preparation process is simple and easy in implementation and is safe and
environmentally friendly. The prepared motor brush has the advantages of being low in
specific resistance, good in commutation, electrical
conductivity and
thermal conductivity, excellent in abrasion performance and decay resistance, long in service life, good in self-lubricating property and the like, and the combination property of the prepared motor brush is obviously superior to the combination property of a traditional brush.