CN101769352A - Dry-type asbestos-free friction sheet - Google Patents
Dry-type asbestos-free friction sheet Download PDFInfo
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- CN101769352A CN101769352A CN200910095232A CN200910095232A CN101769352A CN 101769352 A CN101769352 A CN 101769352A CN 200910095232 A CN200910095232 A CN 200910095232A CN 200910095232 A CN200910095232 A CN 200910095232A CN 101769352 A CN101769352 A CN 101769352A
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Abstract
The invention relates to a dry-type asbestos-free friction sheet which is made of a metal framework and a friction material, wherein the metal framework is cast and molded by aluminum alloy. The dry-type asbestos-free friction sheet is characterized in that: the friction material comprises the following components in percentage by weight: 5 to 26 percent of butyronitrile modified nano phenolic resin, 4 to 6 percent of copper fiber, 2 to 10 percent of graphite, 5 to 8 percent of polytetrafluoroethylene, 5 to 15 percent of carbon fiber, 5 to 10 percent of sodium fluoride, 10 to 20 percent of acrylic pulp fiber, 5 to 30 percent of mineral substances and 4 to 6 percent of curing agent. The dry-type asbestos-free friction sheet has simple process; and the friction material has excellent abrasion resistance and mechanical property and is an elevator braking friction material with excellent performance.
Description
Technical field
The present invention relates to a kind of engineering machinery braking and use friction means, especially relate to a kind of dry-type asbestos-free friction sheet.
Background technique
Elevator friction catch chip technology is a kind of simple structure, applicability is wide, elevator brake technology convenient for installation and maintenance, a key factor of its popularization and application of restriction at present is the brake friction material that lacks the cost performance excellence, elevator is very high to the requirement of friction material, need stable friction, polishing machine and certain heat-resisting quantity, low noise, and can satisfy open operation operation continuously more than 10,000 times, it is stable that usability keeps, material also requires to satisfy the ROHS of European Union environmental protection and the relevant requirement that limits the use of the material instruction simultaneously, does not contain asbestos, plumbous, cadmium, mercury, Cr VIs etc. influence the material of health.
Present domestic this series products of elevator friction brake wafer is dependence on import basically.For accelerating the paces of developmental research, successively introduce external prescription and equipment as friction material factories such as Hangzhou, Shanghai, actively develop the research of novel elevator brake friction material.But find that in research and in using there are some urgent problems in domestic friction material.Though if any Properties of Friction Materials improved, complex manufacturing, cost has increased, energy consumption increased; The friction material that has is also undesirable with aspects such as the compatibility of mating material, bond strength, productivity.
Therefore, up to now, the utility ratio of domestic elevator brake friction material is still very low, the problem of Security and social enviroment protection aspect in addition, and elevator has become the key factor that restriction China elevator already develops with the present situation of brake friction material.
Summary of the invention
The invention provides a kind of preparation method of friction brake wafer, improved friction material formulation, to solve technical problems such as the existing friction material shaping strength of prior art is low, the friction material utilization ratio is low, frictional behaviour is unstable, noise is big.
Above-mentioned technical problem of the present invention is solved by following technical proposals:
Dry-type asbestos-free friction sheet is made by metal frame, friction material, and described metal frame is to use the aluminium alloy casting moulding, and its friction material formulation is made up of following compositions in weight percentage: butyronitrile modified Nano phenolic resin 5～26%; Copper fiber: 4～6%; Graphite 2%～10%; Teflon: 5～8; Carbon fiber 5～15%; Sodium fluoride 5%～10% acrylic fibers pulp fibers 10～20%; Mineral substance 5%～30; Curing agent 4～6% is formed, and making method is: raw material is mixed in proportion and dries; The pressure of mould of packing at 20～35Mpa, in 160 ℃～170 ℃, pass through from preparing adhesive through hotpress, from the preparing adhesive Main Ingredients and Appearance is phenolic resin and nitrile butadiene rubber and curing agent, its weight proportion is 3: 1: 0.5, with solvent, ratio be 1: 6 with metal frame and friction material compaction moulding, through 180 ℃～200 ℃ sintering 8 hours.
Technology of the present invention is simple, and friction material of the present invention has good wear resistance and mechanical property, is a kind of elevator brake friction material of function admirable.
Specific embodiments
Further specify below with reference to embodiment.
Embodiment 1, dry-type asbestos-free friction sheet are made by metal frame, friction material, and described metal frame is to use the aluminium alloy casting moulding, and its friction material formulation is made up of following compositions in weight percentage: butyronitrile modified Nano phenolic resin 26%; Copper fiber: 6%; Graphite 8%; Teflon: 5%; Carbon fiber 5%; Sodium fluoride 10% acrylic fibers pulp fibers 15%; Mineral substance 20; Curing agent 5% is formed.
Making method is: raw material is mixed in proportion and dries; Mould pack at the pressure of 20Mpa, in 170 ℃ through hotpress by from preparing adhesive, be phenolic resin and nitrile butadiene rubber and curing agent from the preparing adhesive Main Ingredients and Appearance, with metal frame and friction material compaction moulding, through 200 ℃ of sintering 8 hours.
Embodiment 2, dry-type asbestos-free friction sheet are made by metal frame, friction material, and described metal frame is to use the aluminium alloy casting moulding, and its friction material formulation is made up of following compositions in weight percentage: butyronitrile modified Nano phenolic resin 15%; Copper fiber: 4%; Graphite 5%; Teflon: 6%; Carbon fiber 10%; Sodium fluoride 10% acrylic fibers pulp fibers 20%; Mineral substance 25%; Curing agent 5% is formed.
Making method is: raw material is mixed in proportion and dries; Mould pack at the pressure of 35Mpa, in 160 ℃ through hotpress by from preparing adhesive, be phenolic resin and nitrile butadiene rubber and curing agent from the preparing adhesive Main Ingredients and Appearance, with metal frame and friction material compaction moulding, through 180 ℃～200 ℃ sintering 8 hours.
Embodiment 3, dry-type asbestos-free friction sheet are made by metal frame, friction material, and described metal frame is to use the aluminium alloy casting moulding, and its friction material formulation is made up of following compositions in weight percentage: butyronitrile modified Nano phenolic resin 10%; Copper fiber: 6%; Graphite 10%; Teflon: 5; Carbon fiber 15%; Sodium fluoride 5%～10% acrylic fibers pulp fibers 14%; Mineral substance 25; Curing agent 4～6% is formed.
Making method is: raw material is mixed in proportion and dries; The pressure of mould of packing at 20～35Mpa, in 160 ℃～170 ℃, pass through from preparing adhesive through hotpress, from the preparing adhesive Main Ingredients and Appearance is phenolic resin and nitrile butadiene rubber and curing agent, with metal frame and friction material compaction moulding, through 180 ℃～200 ℃ sintering 8 hours.
At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, technological scheme of the present invention is not limited to the foregoing description, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (2)
1. dry-type asbestos-free friction sheet is made by metal frame, friction material, and described metal frame is to use the aluminium alloy casting moulding, it is characterized in that: friction material formulation is made up of following compositions in weight percentage: butyronitrile modified Nano phenolic resin 5～26%; Copper fiber: 4～6%; Graphite 2%～10%; Teflon: 5～8; Carbon fiber 5～15%; Sodium fluoride 5%～10% acrylic fibers pulp fibers 10～20%; Mineral substance 5%～30; Curing agent 4～6% is formed.
2. according to the described dry-type asbestos-free friction sheet of claim 1, it is characterized in that: making method is: raw material is mixed in proportion and dries; The pressure of mould of packing at 20～35Mpa, in 160 ℃～170 ℃, pass through from preparing adhesive through hotpress, from the preparing adhesive Main Ingredients and Appearance is phenolic resin and nitrile butadiene rubber and curing agent, with metal frame and friction material compaction moulding, through 180 ℃～200 ℃ sintering 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095232A CN101769352A (en) | 2009-01-05 | 2009-01-05 | Dry-type asbestos-free friction sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095232A CN101769352A (en) | 2009-01-05 | 2009-01-05 | Dry-type asbestos-free friction sheet |
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| Publication Number | Publication Date |
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| CN101769352A true CN101769352A (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910095232A Pending CN101769352A (en) | 2009-01-05 | 2009-01-05 | Dry-type asbestos-free friction sheet |
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| CN (1) | CN101769352A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853012A (en) * | 2012-09-04 | 2013-01-02 | 浙江大学宁波理工学院 | Brake pad with bionic structure and preparation method thereof |
| CN105864329A (en) * | 2016-04-28 | 2016-08-17 | 湖北三江航天江北机械工程有限公司 | Differential friction plate for double-twisting machine and machining method of differential friction plate |
| CN106015410A (en) * | 2016-06-24 | 2016-10-12 | 海安县东洋通达汽车配件有限公司 | Asbestos-free friction material for brake block |
-
2009
- 2009-01-05 CN CN200910095232A patent/CN101769352A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853012A (en) * | 2012-09-04 | 2013-01-02 | 浙江大学宁波理工学院 | Brake pad with bionic structure and preparation method thereof |
| CN102853012B (en) * | 2012-09-04 | 2015-12-09 | 浙江大学宁波理工学院 | A kind of brake block with biomimetic features and preparation method thereof |
| CN105864329A (en) * | 2016-04-28 | 2016-08-17 | 湖北三江航天江北机械工程有限公司 | Differential friction plate for double-twisting machine and machining method of differential friction plate |
| CN106015410A (en) * | 2016-06-24 | 2016-10-12 | 海安县东洋通达汽车配件有限公司 | Asbestos-free friction material for brake block |
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Application publication date: 20100707 |