CN103436221A - Brake pad friction material and preparation technology thereof - Google Patents
Brake pad friction material and preparation technology thereof Download PDFInfo
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- CN103436221A CN103436221A CN2013103200255A CN201310320025A CN103436221A CN 103436221 A CN103436221 A CN 103436221A CN 2013103200255 A CN2013103200255 A CN 2013103200255A CN 201310320025 A CN201310320025 A CN 201310320025A CN 103436221 A CN103436221 A CN 103436221A
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Abstract
The invention discloses a brake pad friction material. The brake pad friction material comprises phenolic resin, nitrile butadiene rubber, Lauren fiber, glass fiber, carbon fiber, graphite, petroleum coke, antimony sulfide, barium sulfate, a friction powder, tire powder, a friction increasing agent, aedelforsite, a fire retardant and meerschaum. The brake pad friction material with excellent environmental protection performance and high wearing coefficient is prepared by following steps: mixing of raw materials; grinding of raw materials; hot-pressing process, and moulding process.
Description
Technical field
The invention belongs to the brake facing industry, relate to a kind of brake shoe friction materials and preparation technology thereof.
Background technology
Brake facing is parts the most key in breaking system, by brake facing, movement parts is carried out to locking, and so the quality of brake facing has determined braking effect.Brake facing, by the steel plate that is arranged on stopper, is bonded in the mode on steel plate by friction materials being utilized to caking agent, thereby while braking, utilize friction materials to prop up movement parts, make it and movement parts between produce friction, make to install the decelerations such as the vehicle of stopper or equipment, even locking.But the quality of the performance of friction materials and drag effect have close relationship.
Friction materials is comprised of strongthener, caking agent, stopping composition and frictional property regulator four major parts usually, caking agent is the important component part in friction materials, affect friction materials heat fading performance, restorability and abrasion resistance properties, that generally uses at present has epoxy resin and a resol etc.Strongthener mainly plays toughener in friction materials, and what generally use at present is to add asbestos, copper fiber etc.Stopping composition, mainly for improving moment of friction and the frictional coefficient of friction materials, increases the wear-resistant coefficient of friction materials, usually by adding copper powder etc., through metal-powder, is realized.Frictional property regulator mainly carries out noise abatement by graphite etc. and improves the wearing coefficient of friction materials.
But along with the raising of people to the environmental-protecting performance requirement of braking quality and brake facing, contain the heavy metal composition in traditional brake block friction material, as copper etc., thereby study a kind of research that does not contain the brake block friction material of heavy metal, be problem in the urgent need to address.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of brake shoe friction materials and preparation technology thereof, has good braking effect, the characteristics that the environmental protection coefficient is high.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of brake shoe friction materials, its innovative point is, comprise part by weight 15%～25% resol, 3%～5% nitrile rubber, 6%～8% labor human relations fiber, 5%～10% glass fibre, 1%～3% carbon fiber, 3%～5% graphite, 2%～4% refinery coke, 5%～8% antimony sulfide, 2%～4% barium sulfate, 5%～10% friction powder, 15%～25% tyre talc, 1%～6% increase the agent that rubs, 3%～6% wollastonite, 3%～5% fire retardant and 1%～3% sepiolite.
Further, describedly increase the agent that rubs and be mainly one or more in powdered iron ore, magnesium oxide, zirconium white, aluminum oxide.
Further, best proportioning is: the resol of part by weight 20%, 5% nitrile rubber, 6% labor human relations fiber, 8% glass fibre, 2% carbon fiber, 4% graphite, 3% refinery coke, 6% antimony sulfide, 3% barium sulfate, 8% friction powder, 20% tyre talc, 4% increase the agent that rubs, 5% wollastonite, 4% fire retardant and 2% sepiolite.
A kind of preparation technology of brake shoe friction materials, for obtaining a kind of brake shoe friction materials, comprise the following steps:
Step 1: the mixing of raw material, take resol, nitrile rubber, labor human relations fiber, glass fibre, carbon fiber, graphite, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite according to aforementioned proportion, then deliver to even mixed friction material in stirrer;
Step 2: the grinding of raw material, mixed friction materials is delivered to pulverizer, its order numerical control is below 40 orders;
Step 3: hot pressing process, the friction materials after grinding is sent in die arrangement, obtain the work in-process brake block friction material;
Step 4: shaping process, the work in-process brake block friction material is delivered in heating unit, the work in-process brake block friction material is carried out to baking processing.
Further, include the following step in described step 1:
Step 1a: take resol, nitrile rubber, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite and stirred in advance according to aforementioned proportion, churning time is 5min～10min;
Step 1b: then, after step 1a stirs end, add graphite and again stir, churning time is 3min～5min;
Step 1c: then, after step 1b stirs end, interpolation labor human relations fiber, glass fibre, carbon fiber stir again, and churning time is 4min～6min;
Further, be provided with deironing apparatus in the grinding of described step 2 raw material.
Further, in described step 3 hot pressing process, hot pressing temperature is 150 ℃～180 ℃, and hot pressing time is 4min～6min, and hot pressing pressure is 12～15Mpa.
Further, in described step 4 shaping process, the temperature of heating unit is controlled at 140 ℃～180 ℃, be 2h～2.5h heat-up time, then be incubated 160 ℃ of 30min, then continue heating, the temperature of heating unit is controlled at 160 ℃～180 ℃, be 3h～3.5h heat-up time, after heating finishes, obtains the brake block friction material finished product.
The invention has the advantages that: do not contain the heavy metals such as copper in the friction materials composition of raw materials, thereby ensure its environmental-protecting performance, by effective combination of mentioned component, make the crocking resistance parameter of friction materials be improved in addition.
Embodiment
Embodiment mono-:
The friction materials proportioning: the resol of part by weight 20%, 5% nitrile rubber, 6% labor human relations fiber, 8% glass fibre, 2% carbon fiber, 4% graphite, 3% refinery coke, 6% antimony sulfide, 3% barium sulfate, 8% friction powder, 20% tyre talc, 4% increase the agent that rubs, 5% wollastonite, 4% fire retardant and 2% sepiolite.Wherein increase the agent that rubs and be mainly one or more in powdered iron ore, magnesium oxide, zirconium white, aluminum oxide.
Preparation technology comprises the following steps: step 1: the mixing of raw material, take resol, nitrile rubber, labor human relations fiber, glass fibre, carbon fiber, graphite, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite according to aforementioned proportion, then deliver to even mixed friction material in stirrer; Step 2: the grinding of raw material, mixed friction materials is delivered to pulverizer, its order numerical control is below 40 orders; Step 3: hot pressing process, the friction materials after grinding is sent in die arrangement, obtain the work in-process brake block friction material; Step 4: shaping process, the work in-process brake block friction material is delivered in heating unit, the work in-process brake block friction material is carried out to baking processing.
Wherein, include the following step: step 1a in step 1: take resol, nitrile rubber, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite and stirred in advance according to aforementioned proportion, churning time is 5min～10min; Step 1b: then, after step 1a stirs end, add graphite and again stir, churning time is 3min～5min; Step 1c: then, after step 1b stirs end, interpolation labor human relations fiber, glass fibre, carbon fiber stir again, and churning time is 4min～6min.Be provided with deironing apparatus in the grinding of step 2 raw material.In step 3 hot pressing process, hot pressing temperature is 150 ℃～180 ℃, and hot pressing time is 4min～6min, and hot pressing pressure is 12～15Mpa.In step 4 shaping process, the temperature of heating unit is controlled at 140 ℃～180 ℃, be 2h～2.5h heat-up time, then be incubated 160 ℃ of 30min, then continue heating, the temperature of heating unit is controlled at 160 ℃～180 ℃, and be 3h～3.5h heat-up time, after heating finishes, obtains the brake block friction material finished product.
Embodiment bis-:
The friction materials proportioning: the resol of part by weight 15%, 5% nitrile rubber, 8% labor human relations fiber, 8% glass fibre, 3% carbon fiber, 5% graphite, 4% refinery coke, 5% antimony sulfide, 4% barium sulfate, 8% friction powder, 17% tyre talc, 4% increase the agent that rubs, 6% wollastonite, 5% fire retardant and 3% sepiolite.Wherein increase the agent that rubs and be mainly one or more in powdered iron ore, magnesium oxide, zirconium white, aluminum oxide.
Preparation technology comprises the following steps: step 1: the mixing of raw material, take resol, nitrile rubber, labor human relations fiber, glass fibre, carbon fiber, graphite, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite according to aforementioned proportion, then deliver to even mixed friction material in stirrer; Step 2: the grinding of raw material, mixed friction materials is delivered to pulverizer, its order numerical control is below 40 orders; Step 3: hot pressing process, the friction materials after grinding is sent in die arrangement, obtain the work in-process brake block friction material; Step 4: shaping process, the work in-process brake block friction material is delivered in heating unit, the work in-process brake block friction material is carried out to baking processing.
Wherein, include the following step: step 1a in step 1: take resol, nitrile rubber, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite and stirred in advance according to aforementioned proportion, churning time is 5min～10min; Step 1b: then, after step 1a stirs end, add graphite and again stir, churning time is 3min～5min; Step 1c: then, after step 1b stirs end, interpolation labor human relations fiber, glass fibre, carbon fiber stir again, and churning time is 4min～6min.Be provided with deironing apparatus in the grinding of step 2 raw material.In step 3 hot pressing process, hot pressing temperature is 150 ℃～180 ℃, and hot pressing time is 4min～6min, and hot pressing pressure is 12～15Mpa.In step 4 shaping process, the temperature of heating unit is controlled at 140 ℃～180 ℃, be 2h～2.5h heat-up time, then be incubated 160 ℃ of 30min, then continue heating, the temperature of heating unit is controlled at 160 ℃～180 ℃, and be 3h～3.5h heat-up time, after heating finishes, obtains the brake block friction material finished product.
Embodiment tri-:
The friction materials proportioning: the resol of part by weight 25%, 3% nitrile rubber, 6% labor human relations fiber, 5% glass fibre, 1% carbon fiber, 3% graphite, 2% refinery coke, 5% antimony sulfide, 2% barium sulfate, 10% friction powder, 25% tyre talc, 3% increase the agent that rubs, 4% wollastonite, 4% fire retardant and 2% sepiolite.Wherein increase the agent that rubs and be mainly one or more in powdered iron ore, magnesium oxide, zirconium white, aluminum oxide.
Preparation technology comprises the following steps: step 1: the mixing of raw material, take resol, nitrile rubber, labor human relations fiber, glass fibre, carbon fiber, graphite, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite according to aforementioned proportion, then deliver to even mixed friction material in stirrer; Step 2: the grinding of raw material, mixed friction materials is delivered to pulverizer, its order numerical control is below 40 orders; Step 3: hot pressing process, the friction materials after grinding is sent in die arrangement, obtain the work in-process brake block friction material; Step 4: shaping process, the work in-process brake block friction material is delivered in heating unit, the work in-process brake block friction material is carried out to baking processing.
Wherein, include the following step: step 1a in step 1: take resol, nitrile rubber, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite and stirred in advance according to aforementioned proportion, churning time is 5min～10min; Step 1b: then, after step 1a stirs end, add graphite and again stir, churning time is 3min～5min; Step 1c: then, after step 1b stirs end, interpolation labor human relations fiber, glass fibre, carbon fiber stir again, and churning time is 4min～6min.Be provided with deironing apparatus in the grinding of step 2 raw material.In step 3 hot pressing process, hot pressing temperature is 150 ℃～180 ℃, and hot pressing time is 4min～6min, and hot pressing pressure is 12～15Mpa.In step 4 shaping process, the temperature of heating unit is controlled at 140 ℃～180 ℃, be 2h～2.5h heat-up time, then be incubated 160 ℃ of 30min, then continue heating, the temperature of heating unit is controlled at 160 ℃～180 ℃, and be 3h～3.5h heat-up time, after heating finishes, obtains the brake block friction material finished product.
The above embodiment to the invention has been described in detail, but described content is only the preferred embodiment of the invention, can not be considered to for limiting the practical range of the invention.All equalization variations of doing according to the invention application range and improvement etc., within all should still belonging to the patent covering scope of the invention.
Claims (8)
1. a brake shoe friction materials, it is characterized in that, comprise part by weight 15%～25% resol, 3%～5% nitrile rubber, 6%～8% labor human relations fiber, 5%～10% glass fibre, 1%～3% carbon fiber, 3%～5% graphite, 2%～4% refinery coke, 5%～8% antimony sulfide, 2%～4% barium sulfate, 5%～10% friction powder, 15%～25% tyre talc, 1%～6% increase the agent that rubs, 3%～6% wollastonite, 3%～5% fire retardant and 1%～3% sepiolite.
2. a kind of brake shoe friction materials according to claim 1, is characterized in that, describedly increases the agent that rubs and be mainly one or more in powdered iron ore, magnesium oxide, zirconium white, aluminum oxide.
3. a kind of brake shoe friction materials according to claim 1, it is characterized in that, best proportioning is: the resol of part by weight 20%, 5% nitrile rubber, 6% labor human relations fiber, 8% glass fibre, 2% carbon fiber, 4% graphite, 3% refinery coke, 6% antimony sulfide, 3% barium sulfate, 8% friction powder, 20% tyre talc, 4% increase the agent that rubs, 5% wollastonite, 4% fire retardant and 2% sepiolite.
4. the preparation technology of a brake shoe friction materials, for obtaining a kind of brake shoe friction materials claimed in claim 1, is characterized in that, comprises the following steps:
Step 1: the mixing of raw material, take resol, nitrile rubber, labor human relations fiber, glass fibre, carbon fiber, graphite, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite according to aforementioned proportion, then deliver to even mixed friction material in stirrer;
Step 2: the grinding of raw material, mixed friction materials is delivered to pulverizer, its order numerical control is below 40 orders;
Step 3: hot pressing process, the friction materials after grinding is sent in die arrangement, obtain the work in-process brake block friction material;
Step 4: shaping process, the work in-process brake block friction material is delivered in heating unit, the work in-process brake block friction material is carried out to baking processing.
5. the preparation technology of a kind of brake shoe friction materials according to claim 4, is characterized in that, includes the following step in described step 1:
Step 1a: take resol, nitrile rubber, refinery coke, antimony sulfide, barium sulfate, friction powder, tyre talc, increase the agent that rubs, wollastonite, fire retardant and sepiolite and stirred in advance according to aforementioned proportion, churning time is 5min～10min;
Step 1b: then, after step 1a stirs end, add graphite and again stir, churning time is 3min～5min;
Step 1c: then, after step 1b stirs end, interpolation labor human relations fiber, glass fibre, carbon fiber stir again, and churning time is 4min～6min.
6. the preparation technology of a kind of brake shoe friction materials according to claim 4, is characterized in that, in the grinding of described step 2 raw material, is provided with deironing apparatus.
7. the preparation technology of a kind of brake shoe friction materials according to claim 4, is characterized in that, in described step 3 hot pressing process, hot pressing temperature is 150 ℃～180 ℃, and hot pressing time is 4min～6min, and hot pressing pressure is 12～15Mpa.
8. the preparation technology of a kind of brake shoe friction materials according to claim 4, it is characterized in that, in described step 4 shaping process, the temperature of heating unit is controlled at 140 ℃～180 ℃, and be 2h～2.5h heat-up time, then is incubated 160 ℃ of 30min, then continue heating, the temperature of heating unit is controlled at 160 ℃～180 ℃, and be 3h～3.5h heat-up time, after heating finishes, obtains the brake block friction material finished product.
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Cited By (6)
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| CN103912618A (en) * | 2014-03-13 | 2014-07-09 | 中实洛阳工程塑料有限公司 | Manufacturing method of flame-retardant, anti-static and asbestos-free brake shoe |
| CN103952122A (en) * | 2014-05-12 | 2014-07-30 | 日照中伟汽车配件有限公司 | Disc brake pad friction material, disc brake pad and manufacturing process thereof |
| CN104110455A (en) * | 2014-06-20 | 2014-10-22 | 宁国飞鹰汽车零部件股份有限公司 | Novel brake pad |
| CN104405804A (en) * | 2014-10-20 | 2015-03-11 | 杭州科铂科技有限公司 | Mineral fiber and carbon fiber automobile brake pad and preparation method thereof |
| CN107353029A (en) * | 2017-08-29 | 2017-11-17 | 瑞安市洪江车业有限公司 | A kind of ceramic friction base material of brake block |
| CN110360253A (en) * | 2019-06-11 | 2019-10-22 | 江西昌河航空工业有限公司 | A kind of friction brake wafer ingredient and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103912618A (en) * | 2014-03-13 | 2014-07-09 | 中实洛阳工程塑料有限公司 | Manufacturing method of flame-retardant, anti-static and asbestos-free brake shoe |
| CN103952122A (en) * | 2014-05-12 | 2014-07-30 | 日照中伟汽车配件有限公司 | Disc brake pad friction material, disc brake pad and manufacturing process thereof |
| CN103952122B (en) * | 2014-05-12 | 2015-12-30 | 日照中伟汽车配件有限公司 | Disc brake pad friction material, disc brake pad and disc brake pad manufacturing process |
| CN104110455A (en) * | 2014-06-20 | 2014-10-22 | 宁国飞鹰汽车零部件股份有限公司 | Novel brake pad |
| CN104110455B (en) * | 2014-06-20 | 2017-01-25 | 宁国飞鹰汽车零部件股份有限公司 | Brake pad |
| CN104405804A (en) * | 2014-10-20 | 2015-03-11 | 杭州科铂科技有限公司 | Mineral fiber and carbon fiber automobile brake pad and preparation method thereof |
| CN107353029A (en) * | 2017-08-29 | 2017-11-17 | 瑞安市洪江车业有限公司 | A kind of ceramic friction base material of brake block |
| CN110360253A (en) * | 2019-06-11 | 2019-10-22 | 江西昌河航空工业有限公司 | A kind of friction brake wafer ingredient and preparation method thereof |
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Application publication date: 20131211 |