CN105647470A - Composite whisker containing granule with large porosity and preparation method thereof - Google Patents
Composite whisker containing granule with large porosity and preparation method thereof Download PDFInfo
- Publication number
- CN105647470A CN105647470A CN201510719833.8A CN201510719833A CN105647470A CN 105647470 A CN105647470 A CN 105647470A CN 201510719833 A CN201510719833 A CN 201510719833A CN 105647470 A CN105647470 A CN 105647470A
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- CN
- China
- Prior art keywords
- weight part
- diatomite
- preparation
- expanded graphite
- potassium titanate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000008187 granular material Substances 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 17
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 17
- 239000010455 vermiculite Substances 0.000 claims abstract description 17
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 17
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 36
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000004113 Sepiolite Substances 0.000 claims description 16
- 239000011236 particulate material Substances 0.000 claims description 16
- 238000004513 sizing Methods 0.000 claims description 16
- 239000000454 talc Substances 0.000 claims description 16
- 229910052623 talc Inorganic materials 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 6
- 238000010074 rubber mixing Methods 0.000 claims description 6
- 239000002783 friction material Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 239000011591 potassium Substances 0.000 abstract description 2
- 229910052700 potassium Inorganic materials 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/149—Antislip compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a composite whisker containing granule with a large porosity and a preparation method thereof. The granule comprises the following components: fibrous meerschaum, white vermiculite, expanded graphite, tire powder, diatomite, adhesive, and potassium hexatitanate whisker. The preparation method comprises the following steps: evenly mixing raw materials according to the formula, putting the mixture into a double roller rubber open mill, carrying out melting to melt and plasticize the mixture, and grinding the plasticized material into granules with a particle size of 8 to 20 meshes. The granule can effectively reduce the hardness and density of friction plate and noise during the braking process, at the same time and increases the porosity of friction materials; thus the brake noise can be reduced, the wear of brake pad is reduced, the braking stability of vehicles at a high temperature is guaranteed, and the problems of transfer membrane, environment protection, noise, and falling ash are solved.
Description
Technical field
The present invention relates to the material of friction plate in a kind of automobile brake sheet and its preparation method, particularly a kind of have a relatively air porosity must particulate material and its preparation method containing composite crystal.
Background technology
Breaking system is one of security system the most important on automobile, and brake facing is the parts that to have suffered in breaking system important, it can directly have influence on the reliability of whole breaking system, breaking system defines friction pair by brake facing and brake flange phase mutual friction, produce braking moment, the kinetic energy of automobile is converted into heat energy, and temperature during braking can rise to 300��400 DEG C.
Conventional brake facing is divided into:
1, asbestos type, owing to fibrous magnesium silicate has high strength and high temperature resistant, therefore meets the requirement of brake facing and clutch plate, has the anti-tensile ability of fiber and the hardness of senior metal material and wear resistance simultaneously;
2, semi-metal type, main adopts coarse Steel Wool as the big mixture of reinforced fibers and important frictional coefficient, and major advantage is to adapt to normal operation at relatively high temperatures, but noise is too big, and the wear rate of brake flange is bigger;
3, without asbestos organic type, mainly with glass fibre, aromatic polyester fiber and other fibers as reinforcement material, its performance depends primarily on type and other mixture of fiber, and advantage is that shortcoming is that wear resistance and heat resistance are not strong without the ash fouling that falls, feature that noise is little.
Brake facing is the breaking piece of most critical in automobile brake system, the quality of automobile brake perfrmance is played a decisive role. Brake facing is generally made up of steel plate, bonding thermofin and friction plate, and during brake, friction plate is compressed on brake flange to produce friction, thus reaches the object of vehicle slowing-down brake. Friction plate is made up of friction materials and tackiness agent, and friction materials is matrix material, comprises metallic substance, filamentary material and mineral material. The use of these materials makes friction materials generally have higher density and degree of compactness, and void content is extremely low even close to zero, generation noise inevitable during brake, abrasion brake flange.
Simultaneously, the innovative point of the present invention is to utilize crystal whisker of hexa potassium titanate in friction process to the reflex action of energy and the generation of transfer film, thus ensure the stability of brake facing frictional coefficient, conventional asbestos friction material just there will be performance degradation phenomenon when 230 DEG C, and crystal whisker of hexa potassium titanate also there will not be performance degradation phenomenon when 350 DEG C, stable frictional behaviour still can be maintained.Noise is the most insoluble problem of all friction materials manufacturers always, crystal whisker of hexa potassium titanate makes it constantly form displacement membrane due to the molecular structure of its material uniqueness, the brake facing being made up of it is not only without high frequency noise, and substantially solve the problem of low frequency noise, potassium hexatitanate stable chemical performance, nontoxic, human security can not be injured, do not pollute the environment.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of have a relatively air porosity must particulate material containing composite crystal. Solve that the brake noise that existing friction materials causes because void content is low is big, the problem of abrasion brake flange, and provide a kind of composite crystal must using method in formula.
The technical scheme realizing above-mentioned purpose of the present invention is: a kind of have relatively air porosity containing composite crystal must particulate material, it is adopted and is prepared from the following method:
Formula includes: fibrous sepiolite 15��20 weight part, white vermiculite 10��20 weight part, expanded graphite 8��15 weight part, tyre talc 5��8 weight part, diatomite 30��35 weight part, sizing agent 9��11 weight part, crystal whisker of hexa potassium titanate 20��25 weight part.
Step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
The further technical scheme of the present invention is:
Formula includes: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part.
The present invention further technical scheme be:
Formula includes: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part.
The two of the object of the present invention are the above-mentioned deficiencies overcoming prior art, and provide a kind of preparation method containing composite crystal palpus particulate material having relatively air porosity.
The technical scheme realizing above-mentioned purpose of the present invention is: a kind of preparation method containing composite crystal palpus particulate material having relatively air porosity,
Formula includes: fibrous sepiolite 15��20 weight part, white vermiculite 10��20 weight part, expanded graphite 8��15 weight part, tyre talc 5��8 weight part, diatomite 30��35 weight part, sizing agent 9��11 weight part, crystal whisker of hexa potassium titanate 20��25 weight part;
Step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
The further technical scheme of the present invention is:
Formula includes: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part.
The present invention further technical scheme be:
Formula includes: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part.
The present invention is compared with prior art, there is following feature: the present invention can effectively reduce hardness and the degree of compactness (density) of friction plate, friction plate is made operationally to absorb the noise produced when contacting with brake flange, thus the noise produced when reducing braking, simultaneously, increase the void content of friction materials, friction materials is made to have good sound absorbing capabilities, thus reach reduction brake noise, alleviate the object of brake flange abrasion, and ensure that the stability of automobile high-temperature brake, solve transfer film problem and environmental protection, noise, fall ash etc. problem.
Below in conjunction with embodiment, content of the present invention is further described.
Embodiment
Embodiment 1
Have relatively air porosity containing composite crystal must a particulate material, it is adopted and is prepared from the following method:
Formula comprises: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part;
Its step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
Embodiment 2
Have relatively air porosity containing composite crystal must a particulate material, it is adopted and is prepared from the following method:
Formula comprises: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part;
Its preparation technology is identical with embodiment 1.
Embodiment 3
The preparation method containing composite crystal palpus particulate material having relatively air porosity, its formula comprises: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part;
Its step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
Embodiment 4
The preparation method containing composite crystal palpus particulate material having relatively air porosity, its formula comprises: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part;
Its preparation technology is identical with embodiment 3.
The above embodiment is only the better embodiment enumerated for absolutely proving the present invention, and protection scope of the present invention is not limited to this. The equivalent replacement that those skilled in the art do on basis of the present invention or conversion, all within protection scope of the present invention.
Claims (6)
1. have relatively air porosity containing composite crystal must a particulate material, it is characterized in that adopting and be prepared from the following method:
Formula includes: fibrous sepiolite 15��20 weight part, white vermiculite 10��20 weight part, expanded graphite 8��15 weight part, tyre talc 5��8 weight part, diatomite 30��35 weight part, sizing agent 9��11 weight part, crystal whisker of hexa potassium titanate 20��25 weight part;
Step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
2. according to claim 1 a kind of have relatively air porosity containing composite crystal must particulate material, it is characterized in that formula includes: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part.
3. according to claim 1 a kind of have relatively air porosity containing composite crystal must particulate material, it is characterized in that formula includes: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part.
4. the preparation method containing composite crystal palpus particulate material having relatively air porosity, is characterized in that including in formula: fibrous sepiolite 15��20 weight part, white vermiculite 10��20 weight part, expanded graphite 8��15 weight part, tyre talc 5��8 weight part, diatomite 30��35 weight part, sizing agent 9��11 weight part, crystal whisker of hexa potassium titanate 20��25 weight part;
Step of preparation process is as follows:
The first step: the group part and the respective weight part number that contain by material are prepared burden;
2nd step: mixed by raw material, drops into two rod rubber mixing mill and carries out melting, make raw materials melt and plastify, and its roller surface temperature is 50��60 DEG C; Smelting time is 20��30min;
3rd step: become particle diameter to be 8��20 object particles the material disintegrating after plasticizing.
5. a kind of preparation method containing composite crystal palpus particulate material having relatively air porosity according to claim 4, is characterized in that including in formula: fibrous sepiolite 15 weight part, white vermiculite 10 weight part, expanded graphite 8 weight part, tyre talc 5 weight part, diatomite 30 weight part, sizing agent 9 weight part, crystal whisker of hexa potassium titanate 20 weight part.
6. a kind of preparation method containing composite crystal palpus particulate material having relatively air porosity according to claim 4, is characterized in that including in formula: fibrous sepiolite 20 weight part, white vermiculite 20 weight part, expanded graphite 15 weight part, tyre talc 8 weight part, diatomite 35 weight part, sizing agent 11 weight part, crystal whisker of hexa potassium titanate 25 weight part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410704048 | 2014-11-30 | ||
| CN2014107040480 | 2014-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105647470A true CN105647470A (en) | 2016-06-08 |
Family
ID=56481772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510719833.8A Withdrawn CN105647470A (en) | 2014-11-30 | 2015-10-30 | Composite whisker containing granule with large porosity and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105647470A (en) |
-
2015
- 2015-10-30 CN CN201510719833.8A patent/CN105647470A/en not_active Withdrawn
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| PB01 | Publication | ||
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20160608 |