Automotive disc ceramic brake without heavy metal, heavy metal sulfide or heavy metal fluoride

Abstract

The invention relates to an automotive disc ceramic brake without heavy metal, heavy metal sulfide or heavy metal fluoride. The automotive disc ceramic brake is prepared from the following components in parts by weight: 9-16 parts of barium sulfate, 1-5 parts of high-lead alumina powder, 5-15 parts of garnet powder, 3-8 parts of palygorskite powder, 1-5 parts of magnesium oxide powder, 1-6 parts of diatomite powder, 3-9 parts of mica powder, 3-6 parts of talcum powder, 1-6 parts of white carbon black, 3-6 parts of aluminum hydroxide, 6-10 parts of calcium hydroxide, 1-3 parts of zinc borate, 3-7 parts of friction particles, 6-10 parts of vermiculite powder, 1-4 parts of tire powder, 5-12 parts of nitrile modified resin, 2-8 parts of nitrile gelatine powder, 2-4 parts of rigid cellulose fiber, 5-8 parts of natural organic fiber, 4-8 parts of mineral fiber, 10-15 parts of ceramic fiber and 8-15 parts of friction powder. The raw materials are mixed, baked and formed to obtain the brake. The automotive disc ceramic brake without heavy metal, heavy metal sulfide or heavy metal fluoride has good friction performance and is environment-friendly and harmless to human health.

Description

technical field [0001] The invention relates to a disc brake pad used for parking and driving brakes of automobiles, in particular to an automobile disc ceramic brake pad free of heavy metals and heavy metal sulfide fluorides. Background technique [0002] Existing automobile disc brake pads all contain heavy metals, such as tin copper, brass, antimony, lead, tin, etc.; they also contain heavy metal sulfides, such as lead sulfide, antimony sulfide, copper sulfide, etc.; some also contain metal fluorides , such as cryolite powder, industrial sodium fluoride, etc., these are harmful substances that will pollute the environment during the process of manufacturing and using brake pads, and pose a great hazard to human health; in addition, the existing ceramic brake pads The proportion is large (2.2~2.9g / cm3), so the quality is also large, and the manufacturing cost is high, the price is expensive, and it is difficult to popularize and apply. Contents of the invention [0003]...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the existing automobile disc brake pads seriously pollute the environment due to the high content of heavy metals and heavy metal sulfide fluorides, and to invent a sensitive and reliable disc brake pad with no thermal fading, stable friction coefficient, stable braking Automotive disc ceramic brake pads without heavy metals and heavy metal sulfides and fluorides