CN103641408B - Non-asbestos brake block of a kind of cement and preparation method thereof - Google Patents
Non-asbestos brake block of a kind of cement and preparation method thereof Download PDFInfo
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- CN103641408B CN103641408B CN201310576711.9A CN201310576711A CN103641408B CN 103641408 B CN103641408 B CN 103641408B CN 201310576711 A CN201310576711 A CN 201310576711A CN 103641408 B CN103641408 B CN 103641408B
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Abstract
The invention discloses a kind of non-asbestos brake block of cement, its raw materials by weight comprises: 14-18% modified phenolic resins, 28-33% fiber-like material, and 40-50% fills class material, 3-9% cement; Wherein, fiber-like material is made up of one or more of mineral fibre, glass fibre and paper fiber, cement by silicate cement, ordinary Portland cement, Portland blast furnace slag cement, Portland pozzolana cement, Portland fly ash cement, composite Portland cement, moderate-heat portland cement, low heat portland blast-furnace-slag cement, white portland cement one or more form.The invention also discloses a kind of preparation method of non-asbestos brake block of cement.In the present invention, the shock strength of the non-asbestos brake block of described cement is large, and during high temperature, wear resistance is good, and the preparation method of the non-asbestos brake block of described cement is simple, and cost is lower.
Description
Technical field
The present invention relates to brake facing technical field, particularly relate to non-asbestos brake block of a kind of cement and preparation method thereof.
Background technology
Brake facing is also brake(-holder) block or brake rubber block, and in the brake system of automobile, brake facing is the breaking piece of most critical, plays a decisive role to the quality of braking effect, and brake facing is generally made up of steel plate, bonding thermofin and frictionshoe.Frictionshoe is made up of friction materials and tackiness agent, during brake, frictionshoe is compressed on brake flange or brake drum and rubs with its generation, thus reach the object making vehicle deceleration brake, visible, frictionshoe determines the performance of brake facing under high-speed and high-temperature braking condition, and friction materials is the integral part very important in manufacturing processed and use procedure of brake facing.
The principle of work of brake mainly carrys out self-friction, and utilize the friction on brake facing and brake disc (drum) and tire and ground, the kinetic energy of being advanced by vehicle converts the heat energy after friction to, is stopped by car.A set of good efficient brake system must can provide stable, enough, controllable braking force, and there is good hydraulic pressure transfer and heat-sinking capability, to guarantee that the power that driver executes from brake pedal fully effectively can pass to master cylinder and each wheel cylinder, the hydraulic failure avoiding high heat to cause and brake decline.
Asbestos brake lining is one comparatively conventional in brake facing, because its cost is low, lightweight, a lot of vehicle manufacturing enterprise is at production lorry, during the automobile of engineering truck and so on, still contain asbestos brake lining in use, the generation dust because brake facing can rub in the course of the work, the sick contaminate environment of release objectionable impurities, many countries prohibit the use asbestos products in the world, more and more to be developed without asbestos formula, and again because adhesive is generally organism-resol in current friction materials, resin easily decomposes when high temperature, friction material matrix is caused to disintegrate, thus allow the frictional coefficient of brake facing decline, wearing and tearing aggravation, how to prepare a kind of shock strength large, the non-asbestos brake block that during high temperature, wear resistance is good becomes the current technical issues that need to address.
Summary of the invention
In order to solve the technical problem existed in background technology, the present invention proposes non-asbestos brake block of a kind of cement and preparation method thereof, the wear resistance of the non-asbestos brake block of described cement is good, shock strength is large, during high temperature, wear resistance is good, the preparation method of the non-asbestos brake block of described cement is simple, and cost is lower.
The non-asbestos brake block of a kind of cement that the present invention proposes, its raw materials by weight comprises: 14-18% modified phenolic resins, 28-33% fiber-like material, and 40-50% fills class material, 3-9% cement; Wherein, fiber-like material is made up of one or more of mineral fibre, glass fibre and paper fiber, cement by silicate cement, ordinary Portland cement, Portland blast furnace slag cement, Portland pozzolana cement, Portland fly ash cement, composite Portland cement, moderate-heat portland cement, low heat portland blast-furnace-slag cement, white portland cement one or more form.
In a particular embodiment, the content of modified phenolic resins can be 14%, 15%, 15.3%, 15.8%, 16%, 17%, 18%, the content of fiber-like material can be 28%, 29.3%, 30%, 31%, 31.3%, 31.5%, 32%, 33%, the content of filling class material can be 40%, 41%, 43%, 44%, 45%, 45.4%, 46%, 46.7%, 47%, 47.5%, 48.3%, 49%, 50%, and the content of cement can be 3%, 4%, 5%, 5.4%, 6%, 6.7%, 7%, 7.8%, 8%, 9%.
Preferably, its raw materials by weight comprises: 15-16% modified phenolic resins, 31-32% fiber-like material, and 45-49% fills class material, 5-8% cement.
A preparation method for the non-asbestos brake block of the cement described in basis, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and cement mixing even;
S3, the compound prepared by S2 are pressed, and press temperature is 145-155 DEG C, obtain the non-asbestos brake block of cement.
Preferably, in S2, add after filling class material and cement and mix in plough type mixer.
Preferably, in S3, in hydropress, compound prepared by S2 is pressed.
Preferably, in S3, press temperature is 151-154 DEG C.
In the present invention, adopt modified phenolic resins as the sizing agent of brake facing and its proportioning of conservative control, effectively can improve the heat fading performance of brake facing, restorability, polishing machine and mechanical property, but because modified phenolic resins can decompose when higher temperatures, friction material matrix is caused to disintegrate, thus allow the frictional coefficient of brake facing decline, wearing and tearing aggravation, by adding cement in brake facing, utilize cement water breakthrough to condense and produce the characteristic of cohesive strength, good strengthening action can be had to matrix when high temperature, in friction materials, add cement can significantly improve shock strength, wear resisting property when greatly improving high temperature, fiber-like material add the density that can reduce material, reduce its abrasion loss, also can reduce the frictional coefficient of material, wherein mineral fibre, glass fibre and paper fiber is used in combination, can significantly improve friction materials in the stability of each temperature section and the affine performance with sizing agent thereof simultaneously, fill class material and can form transfer film, moment of friction and stable frictional coefficient can be improved, the damage to mating plate can be reduced again, improve the wear resisting property of brake facing, the non-asbestos brake block of described cement is in preparation process, by adding fiber-like material and cement mixing again after resin and filling class material mixing are even, can make fiber-like material while fully disperseing, also can not because of the long intensity being reduced product by battering down of churning time, and the preparation method of the non-asbestos brake block of described cement is simple, cost is lower.
Embodiment
Embodiment 1
A kind of non-asbestos brake block of cement, its raw materials by weight comprises: 15% modified phenolic resins, 32% fiber-like material, 44% fills class material, 9% cement, wherein cement is made up of silicate cement, ordinary Portland cement and Portland blast furnace slag cement, and fiber-like material is by fibrous by mineral fibre, glass fibre and paper;
In the present embodiment, the preparation method of the non-asbestos brake block of above-mentioned cement, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and mix in plough type mixer with cement;
S3, the compound obtained by S2 are put into hydropress and are suppressed, and press temperature is 148 DEG C, obtain the non-asbestos brake block of cement.
Embodiment 2
A kind of non-asbestos brake block of cement, its raw materials by weight comprises: 15.8% modified phenolic resins, 31.3% fiber-like material, 46.2% fills class material, 6.7% cement, wherein cement is made up of Portland pozzolana cement, Portland fly ash cement, composite Portland cement and moderate-heat portland cement, and fiber-like material is mineral fibre;
In the present embodiment, the preparation method of the non-asbestos brake block of above-mentioned cement, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and mix in plough type mixer with cement;
S3, the compound obtained by S2 are put into hydropress and are suppressed, and press temperature is 148 DEG C, obtain the non-asbestos brake block of cement.
Embodiment 3
A kind of non-asbestos brake block of cement, its raw materials by weight comprises: 17% modified phenolic resins, 29.3% fiber-like material, 48.3% fills class material, 5.4% cement, wherein cement is made up of low heat portland blast-furnace-slag cement, white portland cement and Portland blast furnace slag cement, and fiber-like material is by fibrous by mineral fibre, glass fibre and paper;
In the present embodiment, the preparation method of the non-asbestos brake block of above-mentioned cement, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and mix in plough type mixer with cement;
S3, the compound obtained by S2 are put into hydropress and are suppressed, and press temperature is 148 DEG C, obtain the non-asbestos brake block of cement.
Embodiment 4
A non-asbestos brake block for cement, its raw materials by weight comprises: 18% modified phenolic resins, 29% fiber-like material, and 49% fills class material, 4% ordinary Portland cement; Fiber-like material by glass fibre and paper fibrous
In the present embodiment, the preparation method of the non-asbestos brake block of above-mentioned cement, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and ordinary Portland cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and mix in plough type mixer with ordinary Portland cement;
S3, the compound obtained by S2 are put into hydropress and are suppressed, and press temperature is 148 DEG C, obtain the non-asbestos brake block of cement.
In the present invention, adopt modified phenolic resins as the sizing agent of brake facing and its proportioning of conservative control, effectively can improve the heat fading performance of brake facing, restorability, polishing machine and mechanical property, but because modified phenolic resins can decompose when higher temperatures, friction material matrix is caused to disintegrate, thus allow the frictional coefficient of brake facing decline, wearing and tearing aggravation, by adding cement in brake facing, utilize cement water breakthrough to condense and produce the characteristic of cohesive strength, good strengthening action can be had to matrix when high temperature, in friction materials, add cement can significantly improve shock strength, wear resisting property when greatly improving high temperature, fiber-like material add the density that can reduce material, reduce its abrasion loss, also can reduce the frictional coefficient of material, wherein mineral fibre, glass fibre and paper fiber is used in combination, can significantly improve friction materials in the stability of each temperature section and the affine performance with sizing agent thereof simultaneously, fill class material and can form transfer film, moment of friction and stable frictional coefficient can be improved, the damage to mating plate can be reduced again, improve the wear resisting property of brake facing, the non-asbestos brake block of described cement is in preparation process, by adding fiber-like material and cement mixing again after resin and filling class material mixing are even, can make fiber-like material while fully disperseing, also can not because of the long intensity being reduced product by battering down of churning time, and the preparation method of the non-asbestos brake block of described cement is simple, cost is lower.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (6)
1. a non-asbestos brake block for cement, is characterized in that, its raw materials by weight comprises: 14-18% modified phenolic resins, 28-33% fiber-like material, and 40-50% fills class material, 3-9% cement; Wherein, fiber-like material is fibrous by mineral fibre, glass fibre and paper, and cement is made up of silicate cement, ordinary Portland cement, Portland blast furnace slag cement, Portland pozzolana cement, Portland fly ash cement, composite Portland cement, moderate-heat portland cement, low heat portland blast-furnace-slag cement, white portland cement.
2. the non-asbestos brake block of cement according to claim 1, is characterized in that, its raw materials by weight comprises: 15-16% modified phenolic resins, 31-32% fiber-like material, and 45-49% fills class material, 5-8% cement.
3. a preparation method for the non-asbestos brake block of cement according to claim 1 and 2, is characterized in that, comprises the steps:
S1, take modified phenolic resins, fiber-like material, filling class material and cement by weight percentage;
S2, by modified phenolic resins in S1 and to fill class material mixing even, then add the fiber-like material described in S1 and cement mixing even;
S3, the compound prepared by S2 are pressed, and press temperature is 145-155 DEG C, obtain the non-asbestos brake block of cement.
4. the preparation method of the non-asbestos brake block of cement according to claim 3, is characterized in that, in S2, adds after filling class material and cement and mixes in plough type mixer.
5. the preparation method of the non-asbestos brake block of cement according to claim 3, is characterized in that, in S3, is pressed by compound prepared by S2 in hydropress.
6. the preparation method of the non-asbestos brake block of cement according to claim 3, is characterized in that, in S3, press temperature is 151-154 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310576711.9A CN103641408B (en) | 2013-11-15 | 2013-11-15 | Non-asbestos brake block of a kind of cement and preparation method thereof |
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| CN201310576711.9A CN103641408B (en) | 2013-11-15 | 2013-11-15 | Non-asbestos brake block of a kind of cement and preparation method thereof |
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| CN103641408A CN103641408A (en) | 2014-03-19 |
| CN103641408B true CN103641408B (en) | 2015-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104045288B (en) * | 2014-06-27 | 2015-11-18 | 无锡市崇安区科技创业服务中心 | A kind of wear-resisting antiskid concrete and constructional method thereof |
| CN105735589B (en) * | 2014-08-28 | 2017-10-03 | 山东省建筑科学研究院 | Texture paint used for building exterior wall decorates prefabricated coiled material preparation method |
| CN108050183B (en) * | 2017-12-12 | 2018-12-04 | 绍兴同辰化纤有限公司 | A kind of friction material and its locomotive brake shoe of preparation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563735A (en) * | 2004-04-08 | 2005-01-12 | 广西科学院应用物理研究所 | Automotiv non-asbestos high strength braking friction disk, and its prodn. method |
| CN103045163A (en) * | 2012-10-18 | 2013-04-17 | 殷国忠 | Synthesizing type friction material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563735A (en) * | 2004-04-08 | 2005-01-12 | 广西科学院应用物理研究所 | Automotiv non-asbestos high strength braking friction disk, and its prodn. method |
| CN103045163A (en) * | 2012-10-18 | 2013-04-17 | 殷国忠 | Synthesizing type friction material |
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