CN101812283A - Premix material for friction material and processing method thereof - Google Patents
Premix material for friction material and processing method thereof Download PDFInfo
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- CN101812283A CN101812283A CN201010143504A CN201010143504A CN101812283A CN 101812283 A CN101812283 A CN 101812283A CN 201010143504 A CN201010143504 A CN 201010143504A CN 201010143504 A CN201010143504 A CN 201010143504A CN 101812283 A CN101812283 A CN 101812283A
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Abstract
The invention discloses a premix material for a friction material and a processing method thereof. The premix material comprises the following components in percentage by weight: 45 to 70 percent of natural crystalline flake graphite, 15 to 30 percent of jute fiber, sisal fiber or a mixture of the two, 4 to 8 percent of nitrile butadiene rubber, 8 to 12 percent of ethylene propylene terpolymer, 0.5 to 3 percent of zinc oxide, 0.8 to 1.5 percent of sulphur and 0.7 to 1.5 percent of accelerator M. The nitrile butadiene rubber, ethylene propylene terpolymer, zinc oxide, natural plant fiber, natural crystalline flake graphite, accelerator M and sulphur are sequentially added into a rubber fining mixer to be mixed and then the raw materials are crushed into grains with a crushing machine so as to obtain the finished product. The premix material for the friction material has the advantages of effectively regulating the surface hardness of the friction material product, improving the friction effect, reducing the abrasion and improving the comfort of the friction material during use.
Description
Technical field
The present invention relates to be used for the friction materials of various brakings or transmission system, particularly a kind of premix material for friction material and working method thereof.
Background technology
Any mechanical means and vehicle, braking and transmission system all must be arranged, the friction materials goods are key parts of these systems, and the quality of its friction and wear behavior is directly connected to operation, efficient and even the equipment of mechanical means or vehicle and personnel's safety, and its importance is self-evident.
Friction materials be a kind of be the functional type matrix material of groundwork character with its friction and wear behavior, its composition generally can be divided into four parts by function: matrix, strengthen body, frictional property regulator and filler.Wherein frictional property regulator can be divided into two classes again by effect: increase rub agent and lubricant.Increasing the agent that rubs mainly is a little hard particles, and its effect is the frictional force when increasing friction materials work.Though the groundwork character of friction materials is to utilize its frictional force to realize the conversion of energy, if cause the friction materials goods to get surface hardness raising but add too much the increasing agent meeting that rubs, and too high surface hardness can cause that the friction materials goods occur skidding when work, locking, tremble, negative condition such as noise.Therefore, interpolation increases kind, self property and the consumption that need increase the agent that rubs when rubbing agent according to practical situation control in friction materials.The significant feature of the lubricant in the friction materials is the frictional behaviour of regulating friction materials, makes every performance index (comfort level in frictional coefficient, wear rate and the use etc.) of friction materials reach a balance preferably.
The lubricant that uses in friction materials at present mainly is the non-metallic minerals that graphite, mica etc. have laminated structure, generally adds with form of powder.Use these non-metallic minerals powder can play the effect that reduces frictional coefficient as lubricant, but also brought some negative influences simultaneously,, wearing and tearing higher as the surface hardness of friction materials more greatly, easily produce noise etc.
Summary of the invention
The purpose of this invention is to provide a kind of can reconciliation statement in the friction materials goods surface hardness, reduce wear rate, control friction noise friction materials with lubricator, special a kind of premix material for friction material and the working method thereof of proposing.
For achieving the above object, the technical solution used in the present invention is, a kind of premix material for friction material and working method thereof is characterized in that: described premix material for friction material is to be made through mixing, fragmentation by 45%～70% natural flake graphite, 15%～30% natural plant fibre, 12%～20% rubber matrix, 2%～6% rubber ingredients by weight.
Described natural plant fibre is jute fibre or sisal fibers.
Described rubber matrix is made up of 4%～8% paracril and 8%～12% terpolymer EP rubber by weight.
Described rubber ingredients are made up of the captax of 0.5%～3% zinc oxide, 0.8%～1.5% sulphur and 0.7%～1.5% by weight.
A kind of working method of premix material for friction material is characterized in that comprising the following steps:
(1) is that 12%～20% rubber matrix is put into rubber mixing machine with weight ratio, plasticated 2-3 minute;
(2) roll temperature that keeps rubber mixing machine is between 40 ℃～80 ℃, adds weight ratio and be 15%～30% natural plant fibre and weight ratio and be 40%～70% natural flake graphite, and is mixing even to Graphite Distribution with the rubber unvulcanizate that step (1) obtains;
(3) continue adding weight ratio is 2%～6% rubber ingredients, and the rubber unvulcanizate that obtains with step (2) is mixing to be evenly distributed to all material;
(4) adhesive plaster that step (3) is obtained or micelle are put into crusher and are broken into particle, obtain finished product.
Beneficial effect
Beneficial effect of the present invention is:
(1) regulates friction materials product surface hardness.Premix material for friction material involved in the present invention is a kind of soft material, when using in the friction materials goods, can form soft point at the friction materials product surface, can effectively reduce the surface hardness of friction materials goods;
(2) usefulness thereby the raising of the real contact area of increase friction materials goods and friction pair rubs.Because premix material for friction material involved in the present invention has formed soft point at the friction materials product surface, under the effect of positive pressure, the minute protrusions on friction pair surface can embed in these soft points, thereby increased the real contact area of friction materials goods and friction pair, shown as the raising of friction usefulness on the macroscopic view;
(3) wear rate of reduction friction materials goods improves work-ing life.Premix material for friction material involved in the present invention becomes an integral body with graphite and rubber matrix are mixing, and added fiber reinforcement, make its intensity on tangential direction will be much larger than simple natural flake graphite, under the effect of tangential force, be not easy to come off, thereby reduced the wear rate of friction materials goods, improved work-ing life.
(4) improve the level of comfort that the friction materials goods use.Premix material for friction material involved in the present invention can effectively be regulated the surface hardness of friction materials goods, makes the friction materials goods softer when contacting with friction pair, thus reduced tremble in the friction process, the probability of negative phenomena such as noise.
Embodiment
The present invention mainly is achieved through the following technical solutions, and each component prescription is by weight: 45%～70% natural flake graphite, 15%～30% natural plant fibre, 12%～20% rubber matrix, 2%～6% rubber ingredients.Wherein natural plant fibre is jute fibre, sisal fibers or the mixture of the two, rubber matrix is 4%～8% paracril and 8%～12% terpolymer EP rubber by weight, rubber ingredients are 0.5%～3% zinc oxide, 0,8%～1.5% sulphur and 0.7%～1.5% captax by weight.
Above-mentioned materials is added in the rubber mixing machine successively mixing according to the order of paracril, terpolymer EP rubber, zinc oxide, natural plant fibre, natural flake graphite, captax and sulphur, become particulate state to obtain finished product through crusher in crushing again.
Embodiment 1
With weight ratio is that 6% paracril, 10% terpolymer EP rubber, 2.8% zinc oxide, 18% jute fibre, 61.2% natural flake graphite, 1% captax and 1% sulphur add in the rubber mixing machine successively, keeping the rubber mixing machine roll temperature mixing even under the condition between 40 ℃～80 ℃, after fragmentation, obtain a kind of premix material for friction material.Its physical and chemical index is:
Embodiment 2
With weight ratio is that 5% paracril, 12% terpolymer EP rubber, 2% zinc oxide, 23.6% sisal fibers, 55.4% natural flake graphite, 1% captax and 1% sulphur add in the rubber mixing machine successively, keeping the rubber mixing machine roll temperature mixing even under the condition between 40 ℃～80 ℃, after fragmentation, obtain a kind of premix material for friction material.Its physical and chemical index is:
Claims (9)
1. premix material for friction material, it is characterized in that: described premix material for friction material is to be made through mixing, fragmentation by 45%～70% natural flake graphite, 15%～30% natural plant fibre, 12%～20% rubber matrix, 2%～6% rubber ingredients by weight.
2. a kind of premix material for friction material according to claim 1 is characterized in that: described natural plant fibre is jute fibre or sisal fibers.
3. a kind of premix material for friction material according to claim 1 is characterized in that: described rubber matrix is made up of the terpolymer EP rubber of 4%～8% paracril and 8%～12% by weight.
4. a kind of premix material for friction material according to claim 1 is characterized in that: described rubber ingredients are made up of the captax of 0.5%～3% zinc oxide, 0.8%～1.5% sulphur and 0.7%～1.5% by weight.
5. the working method of a premix material for friction material comprises the following steps:
(1) is that 12%～20% rubber matrix is put into rubber mixing machine with weight ratio, plasticated 2-3 minute;
(2) roll temperature that keeps rubber mixing machine is between 40 ℃～80 ℃, adds weight ratio and be 15%～30% natural plant fibre and weight ratio and be 40%～70% natural flake graphite, and is mixing even to Graphite Distribution with the rubber unvulcanizate that step (1) obtains;
(3) continue adding weight ratio is 2%～6% rubber ingredients, and the rubber unvulcanizate that obtains with step (2) is mixing to be evenly distributed to all material;
(4) adhesive plaster that step (3) is obtained or micelle are put into crusher and are broken into particle, obtain finished product.
6. the working method of a kind of premix material for friction material according to claim 5 is characterized in that: described rubber matrix is made up of the terpolymer EP rubber of 4%～8% paracril and 8%～12% by weight.
7. the working method of a kind of premix material for friction material according to claim 5, it is characterized in that: described natural plant fibre is jute fibre, sisal fibers or the mixture of the two.
8. the working method of a kind of premix material for friction material according to claim 5 is characterized in that: described rubber ingredients are made up of the captax of 0.5%～3% zinc oxide, 0.8%～1.5% sulphur and 0.7%～1.5% by weight.
9. the working method of a kind of premix material for friction material according to claim 5 is characterized in that: keep the rubber mixing machine roll temperature in mixing process between 40 ℃～80 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010143504A CN101812283A (en) | 2010-04-06 | 2010-04-06 | Premix material for friction material and processing method thereof |
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| CN201010143504A CN101812283A (en) | 2010-04-06 | 2010-04-06 | Premix material for friction material and processing method thereof |
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| CN101812283A true CN101812283A (en) | 2010-08-25 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834363A (en) * | 2013-10-08 | 2014-06-04 | 姜著川 | Agave americana fiber-reinforced environment-friendly friction material and preparation method thereof |
| CN103883655A (en) * | 2012-12-20 | 2014-06-25 | 吴有站 | Low-temperature flexible high-friction composite brake shoe |
| CN104152106A (en) * | 2014-07-30 | 2014-11-19 | 苏州通力电气有限公司 | Low-friction-factor soft filler and preparation method thereof |
| CN104178086A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Low-friction coefficient soft filler |
| CN107218323A (en) * | 2017-06-30 | 2017-09-29 | 朱燕萍 | A kind of assorted fibre friction material and preparation method thereof |
| CN108050184A (en) * | 2017-12-18 | 2018-05-18 | 常州思宇环保材料科技有限公司 | A kind of preparation method of wear-resisting type friction material |
| CN111087973A (en) * | 2019-12-17 | 2020-05-01 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN111483544A (en) * | 2019-01-29 | 2020-08-04 | 台万工业股份有限公司 | Anti-skid pedal |
| CN112694649A (en) * | 2020-12-25 | 2021-04-23 | 湖北飞龙摩擦密封材料股份有限公司 | Preparation method of novel disc type friction plate |
| CN114044948A (en) * | 2021-11-30 | 2022-02-15 | 天宜上佳（天津）新材料有限公司 | Dual-protection composition, wear-resistant material, brake drum type sheet and preparation method |
-
2010
- 2010-04-06 CN CN201010143504A patent/CN101812283A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883655A (en) * | 2012-12-20 | 2014-06-25 | 吴有站 | Low-temperature flexible high-friction composite brake shoe |
| CN103834363A (en) * | 2013-10-08 | 2014-06-04 | 姜著川 | Agave americana fiber-reinforced environment-friendly friction material and preparation method thereof |
| CN103834363B (en) * | 2013-10-08 | 2016-01-13 | 青岛大学 | A kind of american aloe fiber reinforcement Environment protection type friction material and preparation method thereof |
| CN104178086A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Low-friction coefficient soft filler |
| CN104178086B (en) * | 2014-07-30 | 2015-12-30 | 苏州赛斯德工程设备有限公司 | A kind of low-friction coefficient wadding |
| CN104152106B (en) * | 2014-07-30 | 2015-12-30 | 苏州赛斯德工程设备有限公司 | A kind of low-friction coefficient wadding and preparation method thereof |
| CN104152106A (en) * | 2014-07-30 | 2014-11-19 | 苏州通力电气有限公司 | Low-friction-factor soft filler and preparation method thereof |
| CN107218323A (en) * | 2017-06-30 | 2017-09-29 | 朱燕萍 | A kind of assorted fibre friction material and preparation method thereof |
| CN108050184A (en) * | 2017-12-18 | 2018-05-18 | 常州思宇环保材料科技有限公司 | A kind of preparation method of wear-resisting type friction material |
| CN111483544A (en) * | 2019-01-29 | 2020-08-04 | 台万工业股份有限公司 | Anti-skid pedal |
| CN111087973A (en) * | 2019-12-17 | 2020-05-01 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN111087973B (en) * | 2019-12-17 | 2021-07-27 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN112694649A (en) * | 2020-12-25 | 2021-04-23 | 湖北飞龙摩擦密封材料股份有限公司 | Preparation method of novel disc type friction plate |
| CN114044948A (en) * | 2021-11-30 | 2022-02-15 | 天宜上佳（天津）新材料有限公司 | Dual-protection composition, wear-resistant material, brake drum type sheet and preparation method |
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Application publication date: 20100825 |