| 摘要 |
PROBLEM TO BE SOLVED: To provide a brake friction material that has a high strength, a low cracking frequency during use and an excellent squeal characteristic while maintaining the same heat resistance, wear resistance and high coefficient of friction as a brake friction material using a potassium titanate whisker. SOLUTION: The brake friction material at least includes a reinforcing fiber, a binder, a lubricant, a friction modifier and a filler. The brake friction material that amounts to 100% by mass includes 1 to 5% by mass of granular vermiculite of a mean grain size of 0.2 to 2 mm, 5 to 15% by mass of diatomaceous earth, and 5 to 20% by mass of potassium titanate plate fiber, wherein the total of vermiculite and diatomaceous earth amounts to 10 to 20% by mass. COPYRIGHT: (C)2003,JPO
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