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Cellulose-reinforcement disc-adhesion-prevention squeaking-prevention abrasion-resistant braking material and preparation method thereof

A brake material, cellulose technology, applied in the direction of chemical instruments and methods, other chemical processes, etc.

Active Publication Date: 2015-11-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose to use porous natural cellulose, core-shell structure rubber powder (porous core and cortex pre-crosslinked rubber) ) and epoxidized vegetable oil as the main components, then add modified resin matrix, and hot-press molding to make anti-stick disc anti-whistle wear-resistant brake pad material

Method used

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  • Cellulose-reinforcement disc-adhesion-prevention squeaking-prevention abrasion-resistant braking material and preparation method thereof
  • Cellulose-reinforcement disc-adhesion-prevention squeaking-prevention abrasion-resistant braking material and preparation method thereof
  • Cellulose-reinforcement disc-adhesion-prevention squeaking-prevention abrasion-resistant braking material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The ratio of cotton linters is MgCl 2 :MgSO 4 = 5:3 solution of 3mol / L, soaked in ammonia water at 30°C for half an hour, then filtered and dried to obtain cellulose fluff with flame-retardant effect; place the fluff in a high-speed opener and spray After pouring the aluminum ester coupling agent alcohol solution, the fluffy short fleece was heated at 80°C for 30 minutes. Take 10 parts of the above-mentioned treated cotton linters, 18 parts of modified phenolic resin, 6 parts of powdered rubber with pre-crosslinked styrene-butadiene rubber as the core layer of floating beads, 6 parts of epoxy soybean oil, and 300 meshes of burnt gem mineral powder 5 parts, 15 parts of carbonaceous material, 40 parts of 200 mesh barite powder.

[0037] The above-mentioned materials are mixed in a Z-type mixer, and the positive and negative rotations are switched every 3 minutes. The total mixing time is controlled within 15 minutes, and then the molded powder is obtained by discharging...

Embodiment 2

[0047] Woodworking sawdust passed through a 40-mesh sieve, sprayed with a dilute solution of melamine-tri(butoxyethyl) phosphate (TBEP) flame retardant, the spraying amount was 10% of the woodworking sawdust, and then pre-baked at 80°C for 30 minutes, and then the same Embodiment 1 makes the anti-stick disc anti-whistling brake pad, and the physical and mechanical properties of the gained brake pad are as follows:

[0048]

[0049] The numerical comparison of the wear rate of the brake pads made in embodiment 2 and embodiment 1 is as follows Figure 4 Shown:

[0050] The anti-whistling and anti-sticking disk test procedure of the brake pad produced in embodiment 2 is the same as that of embodiment 1, and there is no sharp whistling sound and no sticking brake disc phenomenon.

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Abstract

The invention discloses a cellulose-reinforcement disc-adhesion-prevention squeaking-prevention abrasion-resistant braking material and a preparation method thereof. The braking material comprises, by weight, the main raw materials of 6-18 parts of natural cellulose subjected to flame retarding, thermal stabilization and surface treatment (the surface of the cellulose is coated with coupling agents with 1-3% weight), 8-24 parts of modified resin matrixes, 3-12 parts of core-shell rubber powder, 3-9 parts of epoxidation vegetable oil, 5-15 parts of friction conditioning agents, 6-12 parts of carbonaceous materials and the balance of barium sulfate used for filling to 100 parts. The preparation method includes the steps that the natural cellulose is subjected to flame retarding and stabilization treatment, then the coupling agents are sprayed to the natural cellulose, the natural cellulose is suspended to be opened, heating is performed at 30-90 DEG C until the coupling agents are completely soaked, the cellulose subjected to surface treatment and other components are mixed inside a Z-type stirring machine to obtain mold pressing powder, the mold pressing powder is formed at 120-160 DEG C and 5-10 Mpa in a hot pressing mode, hot pressing time is determined according to the thickness of a product and is generally 1.5-3 min / mm for fitness. The components with porous structures are added into the ingredients, so that a brake pad has the disc-adhesion-prevention, squeaking-prevention and abrasion-resistant effects.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a cellulose-reinforced anti-stick disc anti-whistling wear-resistant braking material and a preparation method thereof. Background technique [0002] Electromagnetic or hydraulic brakes used in ports, wind power, mining, metallurgy, hoisting, machine tools, elevators, etc., the actuator is a friction brake couple, that is, the friction generated by the contact between the wear-resistant brake pad and the surface of the brake disc The force is used as a braking force, so that the lifting or rotating parts of the equipment can be adjusted or decelerated to a stop. At present, regardless of the mainstream power-off braking or power-on braking, the brake pads / brake discs are often in a closed state. Since the working environment of the equipment listed above is mostly in the conditions of high humidity or outdoor exposure, the surface of the steel or iron-based brake disc ...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L61/28C08L45/02C08L63/00C08L75/04C08L1/02C08L9/06C08L9/02C08L91/00C08K13/04C08K7/24C08K3/04C08K3/22C08K3/30C08J5/14C09K3/14B29C43/58
Inventor 王海庆
Owner SHANDONG UNIV
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