CN114672164A - Aramid fiber fabric reinforced wet friction material and preparation method thereof - Google Patents
Aramid fiber fabric reinforced wet friction material and preparation method thereof Download PDFInfo
- Publication number
- CN114672164A CN114672164A CN202210218643.8A CN202210218643A CN114672164A CN 114672164 A CN114672164 A CN 114672164A CN 202210218643 A CN202210218643 A CN 202210218643A CN 114672164 A CN114672164 A CN 114672164A
- Authority
- CN
- China
- Prior art keywords
- aramid fiber
- fiber fabric
- friction material
- sample
- fabric reinforced
- 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.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 123
- 229920006231 aramid fiber Polymers 0.000 title claims abstract description 96
- 239000002783 friction material Substances 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims description 27
- 239000011347 resin Substances 0.000 claims description 27
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 13
- 238000002791 soaking Methods 0.000 claims description 13
- 238000005470 impregnation Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 7
- 244000226021 Anacardium occidentale Species 0.000 claims description 6
- 235000020226 cashew nut Nutrition 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009941 weaving Methods 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 23
- 239000004917 carbon fiber Substances 0.000 abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 21
- 239000005011 phenolic resin Substances 0.000 abstract description 7
- 229920001568 phenolic resin Polymers 0.000 abstract description 7
- 239000011208 reinforced composite material Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000004760 aramid Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229920000271 Kevlar® Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004761 kevlar Substances 0.000 description 4
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2461/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2461/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08J2461/14—Modified phenol-aldehyde condensates
Abstract
The invention relates to an aramid fiber fabric reinforced wet friction material and a preparation method thereof, wherein aramid fiber fabrics and modified phenolic resin are used as raw materials, the pretreated aramid fiber fabrics are alternately cleaned and dried by deionized water and absolute ethyl alcohol, then the aramid fiber fabrics are immersed in a phenolic resin solution dissolved by the absolute ethyl alcohol for a period of time, and then the aramid fiber fabrics are taken out for natural airing and then are subjected to hot-pressing and curing by a flat-plate vulcanizing machine to obtain the final aramid fiber fabric reinforced composite material. The invention is beneficial to solving the problems of the existing carbon fiber fabric reinforced wet friction material in the preparation process and the application process, thereby obtaining the aramid fiber fabric reinforced wet friction material with more excellent comprehensive performance. The friction material prepared by the invention is tested by an HSR-2M type high-speed reciprocating friction and wear testing machine, the friction and wear performance (the friction coefficient is improved by about 10%) is excellent, the dynamic friction coefficient under a wet condition is high and stable, the cost is low, and the durability and the reliability are excellent.
Description
Technical Field
The invention belongs to the field of friction materials, and relates to an aramid fiber fabric reinforced wet friction material and a preparation method thereof.
Background
The wet friction material is a component material which works in a lubricating medium (mainly lubricating oil) and realizes braking and transmission functions by virtue of friction action, and is mainly applied to wet transmission systems such as an automatic transmission, a differential, a torque manager, a synchronizer and the like.
With the development of vehicles towards high speed and heavy load, higher requirements are put on the safety and stability of a wet transmission system. As a high-performance wet friction material, the carbon fiber fabric reinforced resin-based friction material is a friction material which takes fabric (carbon fiber) as a reinforcement and resin as a bonding matrix. The carbon fiber fabric is formed by weaving filament carbon fibers in a warp-weft mode, and is a general multi-purpose plain fabric. The fiber bundle forms an integral structure in the carbon fiber fabric reinforced friction material, so that the carbon fiber fabric reinforced friction material has the characteristics of high bearing capacity, impact resistance, difficulty in cracking and the like. Due to the unique structure of the fabric reinforcement, fabric reinforced friction materials exhibit better resistance to delamination than chopped strand reinforced friction materials.
The document "Chinese patent with publication number CN 102757621A" discloses a wet friction material and a preparation method thereof, wherein the components of the friction material comprise: the material comprises carbon fiber fabric as a material framework, thermosetting resin, a curing agent and a friction performance regulator. The preparation process comprises the steps of mixing acetone or absolute ethyl alcohol serving as a solvent, phenolic resin, ethylenediamine and ceramic particles at one time, carrying out ultrasonic dispersion on the mixture to prepare an impregnation liquid which is uniformly mixed and has moderate viscosity, then impregnating the carbon fiber fabric, drying, and carrying out hot-pressing curing and subsequent curing heat treatment on the carbon fiber fabric. However, the carbon fiber fabric reinforced wet friction material has poor pasting effect when forming a friction pair with steel, and is caused by poor interface bonding of the fiber and the matrix.
The hybrid chopped fiber reinforced paper-based friction material is generally only suitable for working conditions of medium and low loads, and is easy to lose effectiveness and generate layering damage under abnormal conditions of high rotating speed, large pressure, insufficient lubrication and the like. Under longer-term service conditions, such hybrid fiber reinforced paper-based friction materials also exist: high wear rate, poor interfacial bonding between the components, low homogenization of the material components, and poor friction stability caused by the homogenization.
The document 'Chinese patent with publication number CN 108559446A' discloses a fiber reinforced resin-based wet friction material and a preparation method thereof, aramid fibers are carded and layered by a non-woven fiber fabric technology to obtain a fiber fabric, then mixed filler paste is uniformly added into the fiber fabric, phenolic resin is used as a bonding agent, and the paper-based friction material is finally prepared by gum dipping and hot pressing. The friction coefficient is 0.1-0.13, the static friction coefficient is 0.148-0.160, and the stability coefficient is high. However, since the paper-based friction material generally uses chopped fibers as reinforcement, the three-dimensional skeleton structure (poor support) formed by the chopped fibers makes the paper-based friction material easily generate a delamination phenomenon in service. The paper-based friction material still has the problems of poor interface bonding between the fibers and the resin matrix, uneven distribution of the fibers and the filler in the material surface caused by a forming mode and the like.
As one of the wet friction materials, the two-dimensional fabric has been increasing in importance for reinforcing the wet friction material. In the past, two-dimensional carbon fiber fabric reinforced wet friction materials have been mainly studied. Because the surface of the carbon fiber is inert, the interface bonding force between the carbon fiber and matrix resin is poor, and the stability is further influenced by the weak interface bonding force. Secondly, the impregnation of carbon fiber fabrics is inefficient and often requires multiple, repeated impregnations to obtain preforms containing a certain mass fraction (resin). Carbon fiber fabric reinforced wet friction material is difficult to bond and fasten with the process of basement steel ring paster, and the increase of service time after bonding easily causes to drop and then leads to the vice inefficacy of friction.
By reviewing the current research results on wet friction materials, it can be found that the reinforcement of the two-dimensional fabric reinforced wet friction material is basically a carbon fiber fabric, and the components are relatively single. Paper-based friction materials in wet friction materials have more abundant structural systems than fabric reinforced friction materials, and paper-based friction materials of pure aramid fiber systems have been prepared. Aramid fibers have superior properties in some respects to carbon fibers, however, their use in friction materials under fabric reinforcement systems is less common. Little is seen about the use of filament aramid fibers in wet friction materials. Therefore, the aramid fiber fabric is introduced on the basis of the original carbon fiber fabric reinforced friction material, and the direction worthy of research is formed. At present, aramid fiber fabric reinforced resin-based wet friction materials are not reported.
Aramid 1414 is the highest strength synthetic fiber with the foreign trade name Kevlar, which is known as aramid 1414. The thermal decomposition temperature of the aramid fiber 1414 is as high as 560 ℃, and the strength retention rate is 84% after the aramid fiber is placed in the air at 180 ℃ for 48 hours. Besides, the composite material also has high tensile strength and initial elastic modulus, the fiber strength is high, the specific strength is five times of that of steel, and the composite material has excellent compression strength and bending strength when used in the composite material. Stable thermal shrinkage and creep properties, high insulation and chemical resistance.
Aramid fiber fabrics are classified into kevlar fiber fabrics and nomex fiber fabrics. The Kevlar fiber fabric is formed by weaving Kevlar fibers, and not only has high bearing pressure and excellent tribological performance, but also has the following excellent performances: excellent high temperature resistance, strong flexibility, excellent cutting crack resistance, small temperature change coefficient, high dimensional stability and the like.
Disclosure of Invention
Technical problem to be solved
In order to avoid the defects of the prior art, the invention provides an aramid fiber fabric reinforced wet friction material and a preparation method thereof, and provides the aramid fiber fabric reinforced wet friction material and the preparation method thereof aiming at the defects of the prior carbon fiber fabric reinforced friction material system; the novel aramid fiber fabric/resin-based wet friction material is prepared through the process routes of preparation of a prefabricated body, resin impregnation, hot-pressing treatment of a vulcanizing machine and the like. The problems of low resin impregnation efficiency, low friction coefficient, poor interface bonding of composite materials, unstable friction coefficient, poor bonding effect with a steel ring (easy falling after long-time work), high cost and the like of the original fabric reinforced wet friction material are solved.
Technical scheme
An aramid fiber fabric reinforced wet friction material is characterized in that the components comprise aramid fiber fabric used as a material framework and thermosetting resin; the weight parts of each component are as follows: 70-90 parts of aramid fiber fabric and 10-30 parts of thermosetting resin.
The preparation method of the aramid fiber fabric reinforced wet friction material is characterized by comprising the following steps:
step 1: adding thermosetting resin into absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A; the thermosetting resin is bonding cashew nut shell oil modified phenolic resin;
step 2: cutting the aramid fiber fabric into a rectangular shape, locking the aramid fiber fabric with a thread, soaking the aramid fiber fabric with the locked edge in acetone for 24 hours, taking out the aramid fiber fabric, and airing to obtain a sample A;
and step 3: alternately cleaning the sample A with deionized water and absolute ethyl alcohol for a plurality of times, and drying to obtain a sample B;
and 4, step 4: dipping the sample B in the solution A, taking out and airing to obtain a sample C;
and 5: and placing the sample C on a vulcanizing machine for hot press molding to obtain the aramid fiber fabric reinforced wet friction material.
The rectangular size of the aramid fiber fabric is 5cm multiplied by 10 cm.
And the drying in the step 3 is to obtain a sample B after drying for at least 10 hours at about 75 ℃.
The hot press molding conditions in the step 5 are as follows: the hot pressing temperature is 170 ℃, the hot pressing time is 5-10 minutes, and the hot pressing pressure is 5-10 Mpa.
The weaving type of the aramid fiber fabric is plain weave, twill weave or satin weave.
The specification of the aramid fiber fabric is 200g, 300g and 400 g.
And 4, the step 4 of impregnation is carried out under the condition of natural impregnation under normal pressure or vacuum impregnation.
Advantageous effects
The invention provides an aramid fiber fabric reinforced wet friction material and a preparation method thereof, and a novel fabric reinforced wet friction material is developed by combining the traditional thermosetting resin matrix composite material preparation process and the aramid fiber fabric. The method comprises the steps of taking aramid fiber fabric and modified phenolic resin as raw materials, alternately cleaning and drying the pretreated aramid fiber fabric by using deionized water and absolute ethyl alcohol, immersing the aramid fiber fabric in a phenolic resin solution dissolved by the absolute ethyl alcohol for a period of time, taking out the aramid fiber fabric, naturally airing, and carrying out hot-pressing and curing by using a flat vulcanizing machine to obtain the final aramid fiber fabric reinforced composite material. The invention is beneficial to solving the problems of the existing carbon fiber fabric reinforced wet friction material in the preparation process and the application process, thereby obtaining the aramid fiber fabric reinforced wet friction material with more excellent comprehensive performance. The friction material prepared by the invention is tested by an HSR-2M type high-speed reciprocating friction and wear testing machine, the friction and wear performance (the friction coefficient is improved by about 10%) is excellent, the dynamic friction coefficient under a wet condition is high and stable, the cost is low, and the durability and the reliability are excellent. Particularly, the carbon fiber fabric reinforced wet friction material has better performance in the aspects of tribological performance, patch conformability, impregnation efficiency, cost and the like.
The beneficial effects of the invention are as follows:
(1) the aramid fiber fabric reinforced composite material prepared by the invention has stronger interface bonding, because the adopted aramid fiber has stronger mechanical bonding force (large specific surface area) and van der Waals force physical adsorption, and the strong interface bonding can ensure that the friction material prepared from the aramid fiber fabric obtains better friction coefficient stability and stronger wear resistance.
(2) The aramid fiber fabric reinforced composite material prepared by the invention has high shear strength and good toughness. Due to the characteristics of the aramid fiber, the aramid fiber fabric reinforced wet friction material prepared from the aramid fiber fabric has higher competitiveness when facing working conditions such as dynamic load, local impact and the like.
(3) The failure mode of the aramid fiber fabric reinforced composite material prepared by the invention is plastic, and is completely different from other fabric reinforced composite materials which mainly adopt a brittle fracture failure mode. In addition, the material patch (bonded with the dual steel ring) prepared by the invention has better effect, and simultaneously, the vibration and noise generated by the friction material are improved due to the outstanding flexibility of the material patch.
Drawings
Fig. 1 is a SEM photograph comparison of aramid fiber fabric reinforced wet friction materials with different resin contents, wherein fig. 1(a) is a surface micro-topography of the aramid fiber fabric reinforced friction material with 20% of resin content, and fig. 1(b) is a surface micro-topography of the aramid fiber fabric reinforced friction material with 35% of resin content;
FIG. 2 is a friction coefficient curve diagram of aramid fiber fabric reinforced wet friction materials with different resin contents sliding continuously for 150min under the conditions of friction pressure 190N and sliding speed of 0.15 m/s;
FIG. 3 is a graph of the relationship between the coefficient of dynamic friction and the friction pressure of aramid fiber fabric reinforced friction materials with different resin contents;
FIG. 4 is a graph of the relationship between the coefficient of dynamic friction and the sliding speed of aramid fiber fabric reinforced friction materials with different resin contents;
FIG. 5 is a graph comparing wear rates of aramid fiber fabric reinforced friction materials of different resin contents.
Detailed Description
The invention will now be further described with reference to the following examples, and the accompanying drawings:
the invention adopts the following technical scheme:
the method comprises the steps of pretreating the aramid fiber fabric by using acetone at normal temperature, soaking the pretreated aramid fiber fabric in a modified phenolic resin solution, and performing hot press molding after soaking to obtain the aramid fiber fabric reinforced wet friction material.
The pretreatment method comprises the following steps: and soaking the carbon fiber fabric in acetone for cleaning, and then airing.
The modified phenolic resin solution is 20-40% of cashew nut shell oil modified phenolic resin absolute ethyl alcohol solution.
The preparation method of the aramid fiber fabric reinforced wet friction material specifically comprises the following steps:
step 1: adding 100-200g of modified phenolic resin into 550ml of absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A;
and 2, step: cutting the aramid fiber fabric into a 5cm multiplied by 10cm rectangular shape, locking the side of the aramid fiber fabric with a thread, putting the aramid fiber fabric with the locked side into a culture dish containing acetone, soaking the aramid fiber fabric for 24 hours, taking out the aramid fiber fabric, and airing the aramid fiber fabric to obtain a sample A;
step 3, washing the sample A with deionized water and absolute ethyl alcohol alternately for a plurality of times, and then drying the sample A at about 75 ℃ for at least 10 hours to obtain a sample B;
and 4, step 4: soaking the sample B in the solution A for a period of time, taking out and airing to obtain a sample C;
and 5: and placing the sample C on a vulcanizing machine for hot press molding to obtain the aramid fiber fabric reinforced wet friction material.
Example 1:
step 1: weighing the components of the wet friction material by weight respectively as follows: 400g of aramid fiber fabric, 100g of cashew nut shell oil modified phenolic resin, 300g of absolute ethyl alcohol and 250g of acetone.
Step 2: adding 100g of modified phenolic resin into 550ml of absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A;
And 3, step 3: cutting the aramid fiber fabric into a 5cm multiplied by 10cm rectangular shape, locking the side of the aramid fiber fabric with a thread, putting the aramid fiber fabric with the locked side into a culture dish containing acetone, soaking the aramid fiber fabric for 24 hours, taking out the aramid fiber fabric, and airing the aramid fiber fabric to obtain a sample A;
step 4, washing the sample A with deionized water and absolute ethyl alcohol alternately for a plurality of times, and then drying the sample A at about 75 ℃ for at least 10 hours to obtain a sample B;
and 5: placing the sample B in the solution A and placing the sample B and a container in a vacuum box together, setting the pressure value within a certain range, taking out after soaking for a period of time, and drying to obtain a sample C;
and 6: and placing the sample C on a vulcanizing agent for hot press molding to obtain the aramid fiber fabric reinforced wet friction material with the phenolic resin content of 35%.
The obtained friction material is detected by an HSR-2M type friction material tester, according to a test method of a wet (non-metal) friction material (GB/T13826--14m3/(N·m)-1
Example 2:
step 1: weighing the components of the wet friction material by weight respectively as follows: 400g of aramid fiber fabric, 100g of cashew nut shell oil modified phenolic resin, 300g of absolute ethyl alcohol and 250g of acetone.
Step 2: adding 200g of modified phenolic resin into 550ml of absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A;
and step 3: cutting the aramid fiber fabric into a rectangular shape of 5cm multiplied by 10cm, locking the side with a thread, putting the aramid fiber fabric with the locked side into a culture dish containing acetone, soaking for 24 hours, taking out, and airing to obtain a sample A;
step 4, alternately cleaning the sample A with deionized water and absolute ethyl alcohol for a plurality of times, and then drying the sample A for at least 10 hours at about 75 ℃ to obtain a sample B;
and 5: soaking the sample B in the solution A for a period of time, taking out and airing to obtain a sample C;
step 6: and placing the sample C on a vulcanizing agent for hot press molding to obtain the aramid fiber fabric reinforced wet friction material with the phenolic resin content of 20%.
The obtained friction material is detected by an HSR-2M type friction material tester, according to a test method of a wet (non-metal) friction material (GB/T13826--14m3/(N·m)-1
Example 3:
step 1: weighing the components of the wet friction material by weight respectively as follows: 400g of aramid fiber fabric, 100g of cashew nut shell oil modified phenolic resin, 300g of absolute ethyl alcohol and 250g of acetone.
And 2, step: adding 150g of modified phenolic resin into 550ml of absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A;
and step 3: cutting the aramid fiber fabric into a rectangular shape of 5cm multiplied by 10cm, locking the side with a thread, putting the aramid fiber fabric with the locked side into a culture dish containing acetone, soaking for 24 hours, taking out, and airing to obtain a sample A;
step 4, alternately cleaning the sample A with deionized water and absolute ethyl alcohol for a plurality of times, and then drying the sample A for at least 10 hours at about 75 ℃ to obtain a sample B;
and 5: soaking the sample B in the solution A for a period of time, taking out and airing to obtain a sample C;
step 6: and placing the sample C on a vulcanizing agent for hot press molding to obtain the aramid fiber fabric reinforced wet friction material with the phenolic resin content of 20%.
The obtained friction material is detected by an HSR-2M type friction material tester, according to a test method of a wet (non-metal) friction material (GB/T13826--14m3/(N·m)-1
The invention is not the best known technology.
The above embodiments of the present invention are provided only for illustrating the technical concept and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. The scope of the present invention is not intended to be limited by the foregoing description, but is only limited by the scope of the appended claims. Therefore, any changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. An aramid fiber fabric reinforced wet friction material is characterized in that the components comprise aramid fiber fabric used as a material framework and thermosetting resin; the weight parts of each component are as follows: 70-90 parts of aramid fiber fabric and 10-30 parts of thermosetting resin.
2. A preparation method of the aramid fiber fabric reinforced wet friction material as claimed in claim 1, characterized by comprising the following steps:
step 1: adding 100-200g of thermosetting resin into 550ml of absolute ethyl alcohol, stirring for 4 hours, and standing for 24 hours after stirring to obtain a solution A; the thermosetting resin is bonding cashew nut shell oil modified phenolic resin;
step 2: cutting the aramid fiber fabric into a rectangular shape, locking the aramid fiber fabric with a thread, soaking the aramid fiber fabric with the locked edge in acetone for 24 hours, taking out the aramid fiber fabric, and airing to obtain a sample A;
and step 3: alternately cleaning the sample A with deionized water and absolute ethyl alcohol for a plurality of times, and drying to obtain a sample B;
and 4, step 4: dipping the sample B in the solution A, taking out and airing to obtain a sample C;
and 5: and placing the sample C on a vulcanizing machine for hot press molding to obtain the aramid fiber fabric reinforced wet friction material.
3. The method of claim 2, wherein: the rectangular size of the aramid fiber fabric is 5cm multiplied by 10 cm.
4. The method of claim 2, wherein: and the drying in the step 3 is to obtain a sample B after drying for at least 10 hours at about 75 ℃.
5. The method of claim 2, wherein: the hot press molding conditions in the step 5 are as follows: the hot pressing temperature is 170 ℃, the hot pressing time is 5-10 minutes, and the hot pressing pressure is 5-10 Mpa.
6. A method according to claim 2 or 3, characterized in that: the weaving type of the aramid fiber fabric is plain weave, twill weave or satin weave.
7. The method of claim 2, wherein: the specification of the aramid fiber fabric is 200g, 300g and 400 g.
8. The method of claim 2, wherein: and 4, the step 4 of impregnation is carried out under the condition of natural impregnation under normal pressure or vacuum impregnation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210218643.8A CN114672164A (en) | 2022-03-02 | 2022-03-02 | Aramid fiber fabric reinforced wet friction material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210218643.8A CN114672164A (en) | 2022-03-02 | 2022-03-02 | Aramid fiber fabric reinforced wet friction material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114672164A true CN114672164A (en) | 2022-06-28 |
Family
ID=82071447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210218643.8A Pending CN114672164A (en) | 2022-03-02 | 2022-03-02 | Aramid fiber fabric reinforced wet friction material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114672164A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105348729A (en) * | 2015-10-30 | 2016-02-24 | 陕西科技大学 | Preparation method of organic fiber reinforced carbon cloth/resin composite material |
| CN107793700A (en) * | 2016-09-02 | 2018-03-13 | 江苏先诺新材料科技有限公司 | The composite of a kind of carbon fiber/polyamide imine fiber hybrid fabric as enhancing main body and preparation method thereof |
| CN112154275A (en) * | 2018-05-31 | 2020-12-29 | 株式会社F.C.C. | Wet friction plate and wet multiple plate clutch device having the same |
| CN113518870A (en) * | 2019-02-27 | 2021-10-19 | 法雷奥摩擦材料公司 | Method for the additive manufacturing of a friction lining |
-
2022
- 2022-03-02 CN CN202210218643.8A patent/CN114672164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105348729A (en) * | 2015-10-30 | 2016-02-24 | 陕西科技大学 | Preparation method of organic fiber reinforced carbon cloth/resin composite material |
| CN107793700A (en) * | 2016-09-02 | 2018-03-13 | 江苏先诺新材料科技有限公司 | The composite of a kind of carbon fiber/polyamide imine fiber hybrid fabric as enhancing main body and preparation method thereof |
| CN112154275A (en) * | 2018-05-31 | 2020-12-29 | 株式会社F.C.C. | Wet friction plate and wet multiple plate clutch device having the same |
| CN113518870A (en) * | 2019-02-27 | 2021-10-19 | 法雷奥摩擦材料公司 | Method for the additive manufacturing of a friction lining |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pujari et al. | Comparison of jute and banana fiber composites: A review | |
| Anand et al. | Investigations on the performances of treated jute/Kenaf hybrid natural fiber reinforced epoxy composite | |
| Ashok Kumar et al. | Frictional coefficient, hardness, impact strength, and chemical resistance of reinforced sisal-glass fiber epoxy hybrid composites | |
| Venkateshwaran et al. | Mechanical and water absorption properties of woven jute/banana hybrid composites | |
| Satapathy et al. | Processing and characterization of jute-epoxy composites reinforced with SiC derived from rice husk | |
| MR et al. | Study on water absorption behaviour of jute and kenaf fabric reinforced epoxy composites: Hybridization effect of e-glass fabric | |
| Rashid et al. | Influence of treatments on the mechanical and thermal properties of sugar palm fibre reinforced phenolic composites | |
| Sekaran et al. | Evaluation on mechanical properties of woven aloevera and sisal fibre hybrid reinforced epoxy composites | |
| Bollino et al. | Mechanical behavior of chemically-treated hemp fibers reinforced composites subjected to moisture absorption | |
| CN105348729A (en) | Preparation method of organic fiber reinforced carbon cloth/resin composite material | |
| CN103003591A (en) | Friction member and friction material thereof | |
| Khalid et al. | Evaluation of tensile properties of glass/sisal and glass/jute fibers reinforced hybrid composites at different stacking sequences | |
| Arun et al. | Friction and wear behaviour of glass fibre reinforced polymer composite (GFRP) under dry and oil lubricated environmental conditions | |
| Şahin et al. | Friction and wear behavior of carbon fabric-reinforced epoxy composites | |
| Jagadeesh et al. | Investigations on physical, mechanical, morphological and water absorption properties of ramie/hemp/kevlar reinforced vinyl ester hybrid composites | |
| Mohmad et al. | Physical-mechanical properties of palm kernel activated carbon reinforced polymeric composite: Potential as a self-lubricating material | |
| CN114672164A (en) | Aramid fiber fabric reinforced wet friction material and preparation method thereof | |
| CN105697624A (en) | 2.5-dimensional carbon fiber/aramid fiber woven perform reinforced cashew nut shell oil modified phenolic resin-based friction material | |
| CN101429976A (en) | Clutch face sheet for cars | |
| Toha et al. | Preliminary development of laminated nanocomposite from nanocellulose-Kevlar for military application | |
| CN108504050B (en) | Preparation method of composite sliding plate for bridge support and friction pair | |
| CN109435270B (en) | Static ring material for sealing end face of ship shafting and preparation method thereof | |
| Ramprasad et al. | Development and comparison of cotton dust waste-jute and cotton dust waste-glass fiber reinforced epoxy based hybrid composites. | |
| Alshgari et al. | Mechanical evaluation on carbon/basalt fiber-reinforced hybrid polymer matrix composite | |
| Malaiah et al. | Investigation on effect of fiber and orientation on the properties of bio-fibre reinforced laminates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |