CN108458015B - Drum type brake lining - Google Patents
Drum type brake lining Download PDFInfo
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- CN108458015B CN108458015B CN201810092374.9A CN201810092374A CN108458015B CN 108458015 B CN108458015 B CN 108458015B CN 201810092374 A CN201810092374 A CN 201810092374A CN 108458015 B CN108458015 B CN 108458015B
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- brake lining
- loofah sponge
- drum brake
- sponge
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- 235000009814 Luffa aegyptiaca Nutrition 0.000 claims abstract description 50
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 12
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 10
- 239000010951 brass Substances 0.000 claims abstract description 10
- 239000006229 carbon black Substances 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 9
- 239000005011 phenolic resin Substances 0.000 claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 8
- 229910021383 artificial graphite Inorganic materials 0.000 claims abstract description 8
- 239000002557 mineral fiber Substances 0.000 claims abstract description 8
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 150000003672 ureas Chemical class 0.000 claims description 3
- 244000226021 Anacardium occidentale Species 0.000 claims description 2
- 235000020226 cashew nut Nutrition 0.000 claims description 2
- 244000302544 Luffa aegyptiaca Species 0.000 claims 12
- 244000280244 Luffa acutangula Species 0.000 abstract description 38
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000001913 cellulose Substances 0.000 abstract description 4
- 229920002678 cellulose Polymers 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000003923 scrap metal Substances 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical class O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 235000013877 carbamide Nutrition 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZSJHIZJESFFXAU-UHFFFAOYSA-N boric acid;phosphoric acid Chemical compound OB(O)O.OP(O)(O)=O ZSJHIZJESFFXAU-UHFFFAOYSA-N 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- MSBXTPRURXJCPF-DQWIULQBSA-N cucurbit[6]uril Chemical compound N1([C@@H]2[C@@H]3N(C1=O)CN1[C@@H]4[C@@H]5N(C1=O)CN1[C@@H]6[C@@H]7N(C1=O)CN1[C@@H]8[C@@H]9N(C1=O)CN([C@H]1N(C%10=O)CN9C(=O)N8CN7C(=O)N6CN5C(=O)N4CN3C(=O)N2C2)C3=O)CN4C(=O)N5[C@@H]6[C@H]4N2C(=O)N6CN%10[C@H]1N3C5 MSBXTPRURXJCPF-DQWIULQBSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- 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
- F16D65/00—Parts or details
- F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters
-
- 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
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a drum brake lining which is mainly prepared from the following components in parts by weight: 9-14 parts of phenolic resin, 3-8 parts of nitrile rubber, 6-8 parts of synthetic graphite, 3-5 parts of friction powder, 15-30 parts of precipitated barium sulfate, 20-30 parts of mineral fiber, 6-10 parts of glass fiber, 0.5-2 parts of alpha-alumina, 1-2 parts of carbon black, 1-5 parts of antimony sulfide, 3-8 parts of brass chips and 5-8 parts of loofah sponge. The invention has the beneficial effects that: according to the invention, the loofah sponge which is natural cellulose is added, so that carbon black and other small molecular substances can be effectively adsorbed, the discharge of oil-soluble substances is reduced, and the adhesion degree of falling ash is further weakened; the brass scrap metal friction agent can magnetically adsorb residues and the brake hub, so that the friction coefficient is stabilized, and the abrasion is reduced.
Description
Technical Field
The invention belongs to the technical field of friction braking, and particularly relates to a drum brake lining with stable friction coefficient, small abrasion and less ash falling.
Background
With the rapid development of the automobile industry and the enhancement of environmental awareness, people have higher and higher requirements on various performance indexes of a brake lining (commonly called as a brake pad), such as sufficient and stable friction coefficient, comfortable braking, no noise, small abrasion, good thermal conductivity, low cost and the like. The conventional products on the market at present have the defects of more dust falling, unstable friction coefficient and the like, so that the design of a novel brake lining with good performance indexes is particularly important for the friction material industry.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a drum brake lining which has the characteristics of stable friction coefficient, small abrasion, less ash falling and the like.
The invention aims to provide a drum brake lining.
According to the embodiment of the invention, the drum brake lining is mainly prepared from the following components in parts by weight: 9-14 parts of phenolic resin, 3-8 parts of nitrile rubber, 6-8 parts of synthetic graphite, 3-5 parts of friction powder, 15-30 parts of precipitated barium sulfate, 20-30 parts of mineral fiber, 6-10 parts of glass fiber, 0.5-2 parts of alpha-alumina, 1-2 parts of carbon black, 1-5 parts of antimony sulfide, 3-8 parts of brass chips and 5-8 parts of loofah sponge.
According to the drum brake lining of the embodiment of the invention, the friction powder is cashew nut shell oil friction powder.
According to the embodiment of the invention, the drum brake lining is mainly prepared from the following components in parts by weight: 11 parts of phenolic resin, 5 parts of nitrile rubber, 5 parts of synthetic graphite, 4 parts of friction powder, 25 parts of precipitated barium sulfate, 20.5 parts of mineral fiber, 8 parts of glass fiber, 1.5 parts of alpha-alumina, 2 parts of carbon black, 4 parts of antimony sulfide, 4 parts of brass chips and 7 parts of modified loofah sponge.
According to the embodiment of the invention, the drum brake lining is mainly prepared from the following components in parts by weight: 9 parts of phenolic resin, 3 parts of nitrile rubber, 6 parts of synthetic graphite, 3 parts of friction powder, 15 parts of precipitated barium sulfate, 20 parts of mineral fiber, 6 parts of glass fiber, 0.5 part of alpha-alumina, 1 part of carbon black, 1 part of antimony sulfide, 3 parts of brass chips and 5 parts of modified loofah sponge.
According to the drum brake lining, the particle size of the loofah sponge is 0.5-0.8 cm.
According to the drum brake lining of the embodiment of the invention, the loofah sponge is modified loofah sponge, and the modified loofah sponge is processed according to the following steps:
(1) soaking the loofah sponge in a saturated carbamide ethanol solution for 5-8 hours;
(2) taking out the loofah sponge, and drying at the temperature of 60-80 ℃ for 0.5-1 hour;
(3) and heating to 260-270 ℃, and keeping for 3 hours to obtain the modified loofah sponge.
The loofah sponge is a natural cellulose, and the loofah sponge is modified by using carbamide, so that a simpler pore channel can be formed on the surface of the loofah sponge, the specific surface area of the loofah sponge is increased, and the adsorption of friction scraps can be increased; the formation of adsorption pore channels is facilitated at the temperature of 260-270 ℃, and the structure of cellulose is not damaged.
According to the drum brake lining of the embodiment of the invention, in the step (3), the temperature rise rate is 6 ℃/min.
According to the drum brake lining provided by the embodiment of the invention, the loofah sponge is soaked in supersaturated boric oxide phosphoric acid solution and then dried for 3 hours at the temperature of 260-270 ℃.
After the boric acid phosphate solution is treated, the oxidation resistance of the loofah sponge at high temperature is improved, and the service lives of the loofah sponge and the integral brake lining are effectively prolonged.
According to the drum brake lining of the embodiment of the invention, the phosphoric acid solution has a mass concentration of 60-70%.
According to the drum brake lining provided by the embodiment of the invention, the loofah sponge is soaked in the supersaturated boric oxide phosphoric acid solution at the temperature of 60-80 ℃, and the soaking time is 3-4 h.
According to the drum brake lining of the specific embodiment of the invention, an S-shaped slag guide groove is arranged on the outer side surface (the outer side surface is the contact surface of the brake lining and a brake hub) of the drum brake lining, the width of the slag guide groove is less than 2mm, and the depth of the slag guide groove is less than 2 mm; the slag guide groove is filled with loofah sponge.
A slag guide groove is formed in the outer side face, in contact with the hub, of the brake lining, the slag guide groove is a narrow gap in the brake lining, loofah sponge is filled in the slag guide groove, and a small amount of generated dust is absorbed and stored in the slag guide groove by means of natural net-shaped textures of the loofah sponge, so that the effects of stabilizing the friction coefficient and reducing abrasion are further achieved.
The slag guide groove can adsorb dust, and hot gas generated by the brake disc can be rapidly dispersed along the slag guide groove under the action of centrifugal force when the brake disc rotates, so that the braking performance is improved to a certain extent.
The invention has the beneficial effects that:
1. the loofah sponge natural cellulose is added in the invention, so that carbon black and other small molecular substances can be effectively adsorbed, the discharge of oil-soluble substances is reduced, and the adhesion degree of falling ash is further weakened.
2. The brass chip metal friction reducer is added to the drum brake, and mainly has the functions of demagnetization and reduction of magnetic adsorption of the brake lining and the brake hub (earlier experiments show that the main components of dust remaining after the drum brake is used for a long time are ferric oxide and ferroferric oxide, and the residues are easily magnetically adsorbed with the brake hub and are not easily discharged). And the friction coefficient can be stabilized, and the abrasion is small. The invention carries out modification treatment on the cucurbituril and can effectively adsorb a small amount of ferric oxide and ferroferric oxide generated in the braking process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The drum brake lining comprises 9kg of phenolic resin, 3kg of nitrile rubber, 6kg of synthetic graphite, 3kg of friction powder, 15kg of precipitated barium sulfate, 20kg of mineral fiber, 6kg of glass fiber, 0.5kg of alpha-alumina, 1kg of carbon black, 1kg of antimony sulfide, 3kg of brass chips and 5kg of loofah sponge.
The present invention is described in further detail below by way of examples.
TABLE 1 Scale for materials of examples 2-5
Example 6
The modification treatment method of the loofah sponge comprises the following steps:
(1) soaking retinervus Luffae fructus in saturated ethanol solution of carbamide (95%) for 5 hr;
(2) taking out the loofah sponge, and drying the loofah sponge in a drying box at the temperature of 60 ℃ for 1 hour;
(3) and then raising the temperature to 260 ℃ at the speed of 6 ℃/min, and keeping the temperature at 260 ℃ for 3 hours to obtain the modified loofah sponge.
Example 7
The modification treatment method of the loofah sponge comprises the following steps:
(1) soaking loofah sponge in saturated carbamide ethanol solution for 8 hours;
(2) taking out the loofah sponge, and drying in a drying oven at 80 ℃ for 0.5 hour;
(3) then the temperature is increased to 280 ℃ at the speed of 6 ℃/min and kept at 280 ℃ for 3 hours;
(4) soaking the loofah sponge in a supersaturated boric oxide phosphoric acid solution (the mass concentration of the phosphoric acid solution is 60-70%) for 3-4 hours; and then drying the loofah sponge for 3 hours at the temperature of 260-270 ℃.
The treated loofah sponge can not form gaps or pore canals on the surface, so that the surface area of the loofah sponge is increased, and the oxidation resistance of the loofah sponge is improved after boron oxide treatment.
Example 8
The preparation method comprises the following steps:
(1) mixing raw materials: dividing three parts into three parts, namely adding the loofah sponge (crushed into particles with the particle size of 0.5-0.8 cm), the precipitated barium sulfate and the phenolic resin with the formula amount of 1/4 into a plow-rake type mixer, mixing for 5min, and premixing; secondly, adding the rest of the formula materials (except the glass fiber) into a plow-harrow type mixer, mixing and stirring at a high speed for 5min, finally adding the glass fiber, just plowing and raking for 2min, and uniformly mixing the materials;
(2) bagging: weighing the raw materials according to the feeding amount of the process card, putting the raw materials into a packaging bag, and then packaging;
(3) pressing: the packaged plastic material is put into a die groove of a hot press by adopting a one-step molding method, the control temperature of the hot press molding is 140-160 ℃, and the pressure is 150kg/cm2The curing time is 8 min;
(4) and (3) heat treatment: and carrying out heat treatment on the product after hot press molding, wherein the heat treatment temperature is 160 ℃, and the heat treatment time is 8-10 h.
(5) Grinding: and grinding the product to obtain a final finished product.
The friction materials obtained in examples 1 to 5 were subjected to friction performance tests according to GB5763-2008, respectively, and compared with commercially available products (manufacturer: TBK, friction plate for engineering vehicle), the results are shown in the following table:
TABLE 2 Friction Properties comparison Table
And (4) conclusion: as in examples 1 to 5, the friction coefficient is always kept around 0.4 along with the rise of the temperature, the fluctuation range of the friction coefficient is less than 0.05, no obvious change occurs, and the friction coefficient of the comparative example fluctuates to 0.09; the wear rates and wear qualities of examples 1-5 were less than those of the comparative examples.
According to the invention, the ash falling condition of the product is inspected, the sample examples 1-5 and the commercial products (manufacturer: TBK, friction plate for engineering truck) are adopted, the test method refers to QC/T239-2015 standard, and the specific test result is as follows:
TABLE 3 comparison of "ash falling" conditions for the products
| Ash falling phenomenon | |
| Example 1 | Small amount of |
| Example 2 | Between small and large, moderate |
| Example 3 | Small amount of |
| Example 4 | Between small and large, moderate |
| Example 5 | Small amount of |
| Comparative example | Much more |
And (4) conclusion: in examples 1 to 5, the amount of dust falling from the hub was smaller than that in the comparative example. Therefore, the invention can effectively solve the problem of magnetic adsorption.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A drum brake lining, characterized in that it is mainly prepared from the following components in parts by weight: 9-14 parts of phenolic resin, 3-8 parts of nitrile rubber, 6-8 parts of synthetic graphite, 3-5 parts of friction powder, 15-30 parts of precipitated barium sulfate, 20-30 parts of mineral fiber, 6-10 parts of glass fiber, 0.5-2 parts of alpha-alumina, 1-2 parts of carbon black, 1-5 parts of antimony sulfide, 3-8 parts of brass chips and 5-8 parts of loofah sponge;
an S-shaped slag guide groove is formed in the outer side face of the drum type brake lining, loofah sponge is filled in the slag guide groove, and the outer side face is a contact face of the brake lining and the brake hub.
2. The drum brake lining of claim 1, wherein said friction powder is cashew nut shell oil friction powder.
3. A drum brake lining according to claim 1 or 2, which is prepared from essentially the following components in parts by weight: 11 parts of phenolic resin, 5 parts of nitrile rubber, 5 parts of synthetic graphite, 4 parts of friction powder, 25 parts of precipitated barium sulfate, 20.5 parts of mineral fiber, 8 parts of glass fiber, 1.5 parts of alpha-alumina, 2 parts of carbon black, 4 parts of antimony sulfide, 4 parts of brass chips and 7 parts of loofah sponge.
4. A drum brake lining according to claim 1 or 2, which is prepared from essentially the following components in parts by weight: 9 parts of phenolic resin, 3 parts of nitrile rubber, 6 parts of synthetic graphite, 3 parts of friction powder, 15 parts of precipitated barium sulfate, 20 parts of mineral fiber, 6 parts of glass fiber, 0.5 part of alpha-alumina, 1 part of carbon black, 1 part of antimony sulfide, 3 parts of brass chips and 5 parts of loofah sponge.
5. The drum brake lining according to claim 1, wherein the loofah sponge used to produce the drum brake lining has a particle size of 0.5 to 0.8 cm.
6. The drum brake lining according to claim 1, characterized in that said vegetable sponge is a modified vegetable sponge, said modified vegetable sponge being treated according to the following steps:
(1) soaking the loofah sponge in a saturated carbamide ethanol solution for 5-8 hours;
(2) taking out the loofah sponge, and drying the loofah sponge for 0.5-1 hour at the temperature of 60-80 ℃;
(3) and raising the temperature to 260-270 ℃, and keeping for 3 hours to obtain the modified loofah sponge.
7. The drum brake lining according to claim 6, wherein in step (3), the rate of temperature rise is 6 ℃/min.
8. A drum brake lining according to claim 1, wherein the width of the slag groove is less than 2 mm.
9. A drum brake lining according to claim 1, wherein the depth of the slag groove is less than 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810092374.9A CN108458015B (en) | 2018-01-30 | 2018-01-30 | Drum type brake lining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810092374.9A CN108458015B (en) | 2018-01-30 | 2018-01-30 | Drum type brake lining |
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| Publication Number | Publication Date |
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| CN108458015A CN108458015A (en) | 2018-08-28 |
| CN108458015B true CN108458015B (en) | 2020-01-07 |
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| CN201810092374.9A Active CN108458015B (en) | 2018-01-30 | 2018-01-30 | Drum type brake lining |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109611480B (en) * | 2018-12-10 | 2021-04-13 | 湖北飞龙摩擦密封材料股份有限公司 | Low-abrasion drum type brake lining and preparation method thereof |
| CN109737158B (en) * | 2018-12-21 | 2020-09-25 | 湖北飞龙摩擦密封材料股份有限公司 | Drum type brake lining and preparation method thereof |
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- 2018-01-30 CN CN201810092374.9A patent/CN108458015B/en active Active
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| CN105202075A (en) * | 2015-10-08 | 2015-12-30 | 刘桂华 | Automobile brake lining |
| CN105295838A (en) * | 2015-11-18 | 2016-02-03 | 长春特必克世立汽车零部件有限公司 | Drum type brake lining friction material and drum type brake lining preparation method |
| CN105370769A (en) * | 2015-12-22 | 2016-03-02 | 西南交通大学 | Dust collecting device for automobile disc brake |
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