Unlock instant, AI-driven research and patent intelligence for your innovation.

Pneumatic disc brake pad for low-noise commercial vehicles and preparation method thereof

A technology for disc brake pads and commercial vehicles, applied in the field of brake pads, can solve the problems of low metal brake pads and high noise, and achieve the effects of stable friction performance, improved stability and simple production process

Active Publication Date: 2019-03-22
HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-noise pneumatic disc brake pad for commercial vehicles, which can solve various problems caused by the high noise of the current low-metal brake pads

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pneumatic disc brake pad for low-noise commercial vehicles and preparation method thereof
  • Pneumatic disc brake pad for low-noise commercial vehicles and preparation method thereof
  • Pneumatic disc brake pad for low-noise commercial vehicles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A pneumatic disc brake pad for commercial vehicles, the raw materials of which are calculated by weight percentage as follows:

[0030]

[0031]

[0032] A preparation process for an air pressure disc brake pad for a low-noise commercial vehicle comprises the following steps:

[0033] (1) Mixing: The order of putting the weighed materials into the high-speed mixer is as follows: first pre-mix the non-metallic composite fiber and the friction modifier to ensure that the composite fiber is in a uniformly dispersed state, and then add other raw materials. Auxiliary materials, stir evenly;

[0034] (2) Hot pressing: pressing pressure 300kgf / cm 2 , the hot-pressing temperature is 150°C, the exhaust is 6 times, and the holding time is 60s / mm;

[0035] (3) Warm up the molded brake pad from room temperature to 220°C in 6 hours, keep it warm for 4 hours, and then cool to room temperature with the furnace;

[0036] (4) The heat-treated brake pads are ground, drilled, spr...

Embodiment 2

[0048] A pneumatic disc brake pad for commercial vehicles, the raw materials of which are calculated by weight percentage as follows:

[0049]

[0050] A preparation process for an air pressure disc brake pad for a low-noise commercial vehicle comprises the following steps:

[0051] (1) Mixing: The order of putting the weighed materials into the high-speed mixer is as follows: first pre-mix the non-metallic composite fiber and the friction modifier to ensure that the composite fiber is in a uniformly dispersed state, and then add other raw materials. Auxiliary materials, stir evenly;

[0052] (2) Hot pressing: pressing pressure 310kgf / cm 2 , the hot pressing temperature is 150°C, the exhaust is 8 times, and the holding time is 60s / mm;

[0053] (3) Warm up the molded brake pad from room temperature to 240°C in 6 hours, keep it warm for 4 hours, and then cool to room temperature with the furnace;

[0054] (4) The heat-treated brake pads are ground, drilled, sprayed, printe...

Embodiment 3

[0065] A pneumatic disc brake pad for commercial vehicles, the raw materials of which are calculated by weight percentage as follows:

[0066]

[0067] A preparation process for an air pressure disc brake pad for a low-noise commercial vehicle comprises the following steps:

[0068] (1) Mixing: The order of putting the weighed materials into the high-speed mixer is as follows: first pre-mix the non-metallic composite fiber and the friction modifier to ensure that the composite fiber is in a uniformly dispersed state, and then add other raw materials. Auxiliary materials, stir evenly;

[0069] (2) Hot pressing: pressing pressure 310kgf / cm2, hot pressing temperature 150°C, exhaust 5 times, holding time 60s / mm;

[0070] (3) Warm up the molded brake pad from room temperature to 200°C in 6 hours, keep it warm for 4 hours, and then cool it to room temperature with the furnace;

[0071] (4) The heat-treated brake pads are ground, drilled, sprayed, printed, inspected and packaged...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
friction coefficientaaaaaaaaaa
friction coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-noise air disc brake pad for a commercial vehicle and a preparation method thereof. Main components of the low-noise air disc brake pad comprises boric acid modified phenolic resin, nitrile rubber, carbon fiber, aramid fiber, polyacrylonitrile fiber, mineral fiber, organic friction powder, artificial graphite, flake graphite, alumina, potassium hexatitanate whisker, steel fiber, calcium sulfate whisker, zirconium silicate, antimony sulfide and stuffing. The low-noise air disc brake pad for the commercial vehicle has the characteristics of low noise, stable friction performance and comfortable and stable emergency braking, manufacturing technique is simple and environmentally friendly, and the low-noise air disc brake pad is especially suitable for the air disc brake pad for the commercial vehicle and has broad market prospect.

Description

technical field [0001] The invention belongs to the technical field of brake pads, in particular to a pneumatic disc brake pad for low-noise commercial vehicles and a preparation method thereof. Background technique [0002] In environmental noise pollution, urban traffic noise has become an important source of pollution. Among them, brake linings made of low-end friction materials are one of the main sources of squealing noise, and may become the source of various frequency noises in the entire noise frequency range. From a medical point of view, noise of 85-90 decibels is harmful to people. Automobile braking noise endangers the health and comfort of drivers and passengers, and causes unnecessary noise interference to pedestrians on the road and surrounding residents. In terms of noise, the friction material of the brake lining should be listed as a key control object. At present, low-metal brake pads are widely used in the supporting market for low-end and medium-end au...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14
CPCC09K3/14F16D69/023F16D69/028F16D2200/0065F16D2200/0086
Inventor 杨阳刘伯威段安婧唐兵涂元满
Owner HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS