Check patentability & draft patents in minutes with Patsnap Eureka AI!

Carbon fiber preform for carbon-ceramic brake disc as well as preparation method and application of carbon fiber preform

A carbon fiber preform, carbon ceramic brake disc technology, applied in the direction of brake discs, brake types, brake components, etc., can solve problems such as poor designability, low mechanical properties of brake discs, and increased processing difficulty.

Active Publication Date: 2021-05-28
HUNAN SHIXIN NEW MATERIALS CO LTD
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 103553695A discloses a carbon-ceramic composite brake disc and its preparation method, which is obtained by mixing short carbon fibers, silicon powder, adhesives, absolute ethanol, etc. according to the proportion, and then pressing and solidifying them in an abrasive tool. Brake disc prefabricated body, ventilation slots and other heat dissipation structures must be processed after the green body is densified. The heat dissipation structure is simple, the designability is poor, and the processing difficulty is also increased. In addition, the mechanical properties of the brake disc prepared by this method are also low.
U.S. Patent No. 5,184,387 discloses a method for preparing a ring-mounted carbon fiber prefabricated body. It first needle-punches the carbon fiber unidirectional fabric to a certain thickness and divides it into multiple fan-shaped structural units, and then splices the fan-shaped structural units into a ring structure. The fiber orientation between units can be designed, and the upper and lower unit layers are connected by needle punching; this method can effectively improve the utilization rate of raw materials, and is used to prepare high-performance C / C and C / C-SiC brake discs, but the heat dissipation structure of the brake disc still need follow-up processing

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
  • Carbon fiber preform for carbon-ceramic brake disc as well as preparation method and application of carbon fiber preform
  • Carbon fiber preform for carbon-ceramic brake disc as well as preparation method and application of carbon fiber preform
  • Carbon fiber preform for carbon-ceramic brake disc as well as preparation method and application of carbon fiber preform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of carbon fiber preform for brake disc

[0041] Step 1: Profiling and cutting of no weft fabric and mesh tire

[0042] The carbon ceramic brake disc has an outer diameter of 680mm, an inner diameter of 420mm, and a thickness of 55mm. It adopts a prefabricated outer diameter of 720mm, an inner diameter of 400mm, and a thickness of 59mm; the density is 80g / m 2 Carbon fiber mesh tire and 300g / m 2 The non-weft cloth is cut into rings with an outer diameter of 740mm and an inner diameter of 380mm for later use.

[0043] Step 2: Preparation of the middle layer of the prefabricated body

[0044] In step 1, the rings are alternately laminated with one layer of weft-free cloth and one layer of mesh tires and needling layer by layer. The fibers of two adjacent weft-free cloths are arranged at 0° / 90°, and the needle punching density is 40 needles / cm 2 ; The thickness of the middle layer is 25mm, and the ventilation groove structure is processed after reaching the th...

Embodiment 2

[0055] Step 1: Carbon cloth and mesh tire profiling cutting

[0056] The carbon ceramic brake disc has an outer diameter of 680mm, an inner diameter of 420mm, and a thickness of 55mm. It adopts a prefabricated outer diameter of 720mm, an inner diameter of 400mm, and a thickness of 59mm; the density is 80g / m 2 Carbon fiber mesh tire and 360g / m 2 The carbon cloth is cut into rings with an outer diameter of 740mm and an inner diameter of 380mm for later use.

[0057] Step 2: Preparation of the middle layer of the preform

[0058] The rings in step 1 are stacked alternately with one layer of carbon cloth and one layer of mesh tires, and needling layer by layer. The needling density is 40 needles / cm 2 ; The thickness of the middle layer is 25mm. After reaching the thickness, a ventilation slot structure with complex patterns is processed according to the design drawings (such as Figure 5 ); Simultaneously profiling the EVA board filler for ventilation slots and filling them in ...

Embodiment 3

[0068] Step 1: Profiling and cutting of no weft fabric and mesh tire

[0069] The carbon ceramic brake disc has an outer diameter of 680mm, an inner diameter of 420mm, and a thickness of 55mm. It adopts a prefabricated outer diameter of 720mm, an inner diameter of 400mm, and a thickness of 59mm; the density is 120g / m 2 Carbon fiber mesh tire and 320g / m 2 The non-weft cloth is cut into rings with an outer diameter of 740mm and an inner diameter of 380mm for later use.

[0070] Step 2: Preparation of the middle layer of the preform

[0071] The rings in step 1 are alternately laminated according to one layer of non-weft cloth and one layer of mesh tires and needling layer by layer. The fibers of the adjacent four layers of non-weft cloth are arranged at -45° / 0° / 45° / 90°. Needling density 40 needles / cm 2 ; The thickness of the middle layer is 25mm. After reaching the thickness, the ventilation groove structure is processed; at the same time, the ventilation groove PU foam board...

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
Areal densityaaaaaaaaaa
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a carbon fiber preform as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, carrying out profiling cutting on carbon cloth (non-woven cloth) and a net tire according to the structural size of a brake disc; alternately laminating the cut carbon cloth (non-woven cloth) and the cut net tire, conducting needling layer by layer, performing auxiliary processing to obtain a preform middle layer containing a ventilation slot structure, processing a profiling filler of the ventilation slot structure, and filling the preform middle layer with the profiling filler; then alternately laminating the carbon cloth (non-woven cloth) and the net tire, and carrying out needling layer by layer to obtain a bottom layer and an upper layer of the preform; and finally, further processing a prepared preform blank to obtain a finished brake disc preform. According to the carbon fiber brake disc preform, bearing, heat dissipation and near-size integrated preparation can be achieved, the utilization rate of raw materials is increased, the subsequent production and processing period of the carbon-ceramic brake disc is shortened, the manufacturing cost of the carbon-ceramic brake disc can be greatly reduced, and application of carbon-ceramic materials in the fields of aviation, rail transit and automobile braking is effectively promoted.

Description

technical field [0001] The invention relates to a carbon fiber prefabricated body, a preparation method and application thereof, and belongs to the technical field of carbon ceramic composite material preparation. Background technique [0002] Carbon-ceramic composite materials have low density, high strength, stable friction coefficient and small wear, and are recognized as a new generation of brake materials after carbon-carbon composite materials. Compared with steel brake discs, the weight of carbon ceramic brake discs is reduced by about two-thirds, the load capacity is doubled, and the service life is increased by 1-2 times. Braking systems such as high-end cars have broad application prospects. [0003] At present, the preparation methods of carbon-ceramic brake disc preforms can be divided into two categories: one is hot-pressing forming with short fibers, and the other is needle-punching forming with long fibers. Chinese patent CN 103553695A discloses a carbon-cer...

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
IPC IPC(8): B32B9/00B32B9/04B32B5/06B32B3/08B32B3/26B32B37/00F16D65/12F16D65/847
CPCB32B5/26B32B5/028B32B5/06B32B3/08B32B3/26B32B37/00F16D65/126F16D65/128B32B2262/106B32B2307/30Y02T10/86
Inventor 朱苏华颜兵刘翼君
Owner HUNAN SHIXIN NEW MATERIALS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com