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Spiral rubber extruding frictional piece and production method therefor

A production method and friction plate technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of brake vibration, high hardness of rubber, gnawing, etc.

Inactive Publication Date: 2015-12-02
NANTONG WANDA FRICTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the rubber material of the existing formula is relatively hard and cannot be used in the extrusion process of the screw extrusion method, and the friction plate produced is noisy when braking, and brake vibration or gnawing phenomenon occurs

Method used

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  • Spiral rubber extruding frictional piece and production method therefor

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Embodiment 1

[0018] The invention provides a spiral extruded rubber friction plate, which comprises the following materials in mass fraction: compounding agent: 0.8-1.1; sulfur: 2.5-5.5; filler: 53-73; adhesive: 18-25; Including: styrene-butadiene rubber: 10-14; modified phenolic resin: 8-10.

[0019] The spiral extruded rubber friction plate in the invention reduces the hardness of the rubber material, enhances the plasticity of the rubber material, and can adapt to the screw extrusion process; and the mixed rubber material has strong plasticity and toughness.

[0020] Optionally, the compounding agent includes materials with the following mass fractions: accelerator: 0.4-0.5; anti-aging agent: 0.4-0.6. By adding the accelerator M, the sulfur can reach the maximum activity; and the anti-aging agent D is added, which has a good protective effect on heat, oxygen, flexure and general aging, and prevents the styrene-butadiene rubber in the binder from being plasticized during the mastication ...

Embodiment 2

[0024] The present invention also provides a production method of the above-mentioned spiral extruded rubber friction plate, the flow chart is as follows figure 1 shown, including steps:

[0025] S101: Put the styrene-butadiene rubber into the open mixer for masticating, then mix the compounding agent, sulfur, filler, modified phenolic resin and masticated styrene-butadiene rubber evenly and put them into the internal mixer for banburying, then Put the mixed body after banbury mixing into the open mill for mixing to form a mixed rubber;

[0026] S102: feeding the mixed rubber into the feeding port of the screw extruder, and forming glue lines through the screw extruder with the compound yarn;

[0027] S103: weighing and classifying the glue threads according to the requirements, and winding them into blanks corresponding to patterns and specifications through winding machines;

[0028] S104: placing the blank in a heated mold, forming and curing under the pressure and heatin...

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Abstract

The invention provides a spiral rubber extruding frictional piece and a production method therefor. The spiral rubber extruding frictional piece comprises the following materials in parts by mass: 0.8-1.1 parts of a compounding agent, 2.5-5.5 parts of sulfur, 53-73 parts of filler and 18-25 parts of an adhesive, wherein the adhesive comprises 10-14 parts of butadiene-styrene rubber and 8-10 parts of modified phenolic resin. The production method comprises: plastifying butadiene styrene rubber, uniformly mixing other raw materials and feeding the mixture into an internal mixer to be mixed to form a rubber compound; putting the rubber compound into a spiral rubber extruder to form a rubber line; winding the rubber line to form a blank with a corresponding pattern and specification; carrying out hot press molding on the blank to form the frictional piece; thermally roasting the frictional piece at normal pressure to cure the frictional piece; and polishing, punching, counter-sinking and cleaning the frictional piece. According to the spiral rubber extruding frictional piece provided by the invention, the plasticity and toughness of the rubber compound are enhanced by changing the formula of the frictional piece and the rubber compound is suitable for a production process of spiral extrusion; moreover, the flowability of the rubber compound in the hot press molding process of a product is enhanced and the first pass yield of the product in a processing process is improved.

Description

technical field [0001] The invention relates to the field of friction plates, in particular to a spiral extruded rubber friction plate and a production method thereof. Background technique [0002] At present, all kinds of friction materials for mechanical braking are mainly resin-based friction materials, which generally use phenolic resin or modified phenolic resin as adhesive, add reinforcing fibers, and various functional fillers are formed by hot pressing, curing and other processes. become. Moreover, the rubber material of the existing formula has relatively high hardness, which cannot be used in the extrusion process of the screw extrusion method, and the produced friction plate has a large noise during braking, and brake vibration or gnawing phenomenon occurs. Contents of the invention [0003] A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is n...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L61/14C08K13/02C08K3/06C08K3/04C08K3/30C08K3/34C09K3/14B29C69/00
Inventor 花月群彭鹏张月锋张杨刘义江
Owner NANTONG WANDA FRICTION MATERIAL