Summary of the invention
The objective of the invention is to deficiency, a kind of Wet-type friction material with better weather resistance and safety and preparation method thereof is provided to prior art.
To achieve these goals, the present invention has adopted following technical scheme: a kind of wet type composite friction material is characterized in that: its component comprises as the carbon fiber sheet of material skeleton, thermosetting resin, solidifying agent and frictional property regulator; The parts by weight of said each component are:
40~80 parts of carbon fiber sheets,
10~30 parts of thermosetting resins,
8~15 parts in solidifying agent,
1~5 part of regulator,
The parts by weight of each component are preferably:
60~70 parts of carbon fiber sheets,
15~25 parts of thermosetting resins,
8~10 parts in solidifying agent,
2~4 parts of regulators,
Described carbon fiber sheet is the carbon fiber sheet of quadrature line or oblique line; Described thermosetting resin is the epoxy resin of binding type.
Described solidifying agent is a quadrol; Described regulator is a nano-ceramic particle; Described solvent is selected from a kind of of acetone and absolute ethyl alcohol.
The oxirane value of described epoxy resin is 0.24~0.45.
Described nano-ceramic particle is selected from nano SiC ceramic particle, nano TiC ceramic particle and nanometer TiB
2A kind of in the ceramic particle.
The particle diameter of described nano-ceramic particle is 20~100nm.
The preparation method of wet type composite friction material of the present invention may further comprise the steps successively:
(1) parts by weight by each component take by weighing carbon fiber sheet, thermosetting resin, solidifying agent, regulator and solvent; Then thermosetting resin, solidifying agent, regulator and solvent are carried out ultrasonic dispersing 20~40min; Be mixed into steeping fluid, and the temperature that in mixing process, keeps steeping fluid is at 30~50 ℃;
(2) after liquid to be impregnated is made into, carbon fiber sheet is put into steeping fluid soak 10~20min, take out carbon fiber sheet then and put into air dry oven and carry out drying in 50~90 ℃, be 18~36h time of drying; Carbon fiber sheet is fixed with acupuncture on the Z direction in drying process.
(3) 3~10 layers warp immersion, dried carbon fiber sheet are put into vulcanizing press in 130~160 ℃ of hot-press solidifying 10~30min, temperature rise is lower than 6 ℃/min in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 180~220 ℃ loft drier and is cured thermal treatment 8~15h, and temperature rise is 3~5 ℃/min; At last, it being cooled to room temperature gets product.
The parts by weight of each component described in the preparation method are:
40~80 parts of carbon fiber sheets,
10~30 parts of thermosetting resins,
8~15 parts in solidifying agent,
1~5 part of regulator,
Carbon fiber sheet described in the preparation method is the carbon fiber sheet of quadrature line or oblique line; Described thermosetting resin is the epoxy resin of binding type, and the oxirane value of epoxy resin is 0.24~0.45.
Solidifying agent described in the preparation method selects quadrol; Described regulator is a nano-ceramic particle, is selected from nano SiC ceramic particle, nano TiC ceramic particle and nanometer TiB
2A kind of in the ceramic particle; Described solvent is selected from a kind of in acetone, absolute ethyl alcohol and the ethylene glycol-acetate.
The particle diameter of the nano-ceramic particle described in the preparation method is 20~100nm.
In preparation method of the present invention, it is laboratory Ultrasonic Cleaners commonly used that the part component is carried out the instrument that ultrasonic dispersing uses; Like SK250LH dual-frequency ultrasonic wave cleanser, there are two kinds of frequencies of 59KHz and 40KHz to select, the UW of high frequency has very strong perviousness, can make mixing, the degassing, deaeration, dispersion and extract quicker, more abundant.Adopt the ultrasonic cleaner of other models also passable, like SK3200LH dual-frequency ultrasonic wave cleanser, SK2200 high-frequency ultrasonic cleanser etc.Do not have the restriction of too many technical parameter carrying out this process of ultrasonic dispersing, only need thermosetting resin, solidifying agent, regulator and solvent put into to mix to get final product.
Advantage of the present invention:
(1) nano-ceramic particle/epoxy resin // ethanol/solidifying agent steeping fluid prescription has originality; Can satisfy two-dimentional charcoal cloth range upon range of/epoxy resin friction materials viscosity, curing and requirement of strength; Also, make that the preparation process is easy, compare with Wet-type friction materials such as powder metallurgy friction material, paper friction materials applicable to other resin-matrix friction materials; Level of automation is high, reduces preparation cost greatly;
(2) adopt nano-ceramic particle as single filler, can effectively control the rubbing factor size, improve the heat resisting temperature of epoxy resin, prevent in the filler working process because of the wearing and tearing pollution lubricating oil that comes off;
(3) adopt needle punching fixed carbon cloth, effectively controlled the cracking and the buckling deformation of charcoal cloth lamination;
(4) technology of the present invention is simple, energy consumption is low, good, the high mechanical strength of material homogeneity, obdurability, thermomechanical property is good, rubbing factor is stable, Heat stability is good, fabulous weather resistance and safety, low rate of wear, long service life; Be fit to the clutch coupling of multiple sedan limousine, heavy vehicle clutch, engineering machinery, mining machinery, very wide application prospect is arranged.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1:
Each composition weight of wet type composite friction material: carbon fiber sheet 400 grams, oxirane value are 0.24 epoxy resin 100 grams, and quadrol 50 grams, particle diameter are nano SiC ceramic particle 10 grams of 20nm, acetone 100 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, quadrol, nano SiC ceramic particle, acetone are carried out ultrasonic dispersing 20min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 10min, take out carbon fiber sheet then and put into air dry oven and carry out dry 36h in 50 ℃;
(3) put into vulcanizing press in 130 ℃ of hot-press solidifying 30min with 3 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 180 ℃ loft drier and is cured thermal treatment 15h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.136, and dynamic friction factor is 0.135 ~ 0.157, and 300 arresting wear rates of material are 1.0 * 10
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Embodiment 2:
Each composition weight of wet type composite friction material: carbon fiber sheet 800 grams, oxirane value are 0.45 epoxy resin 300 grams, and acid anhydrides 80 grams, particle diameter are nano TiC ceramic particle 50 grams of 100nm, absolute ethyl alcohol 450 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, quadrol, nano TiC ceramic particle, absolute ethyl alcohol are carried out ultrasonic dispersing 25min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 50 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 20min, take out carbon fiber sheet then and put into air dry oven and carry out dry 18h in 90 ℃;
(3) put into vulcanizing press in 160 ℃ of hot-press solidifying 10min with 10 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 220 ℃ loft drier and is cured thermal treatment 8h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.130, and dynamic friction factor is 0.132 ~ 0.143, and 300 arresting wear rates of material are 0.95 * 10
-8Cm
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Embodiment 3:
Each composition weight of wet type composite friction material: carbon fiber sheet 600 grams, oxirane value are 0.3 epoxy resin 150 grams, quadrol 60 grams, and particle diameter is the nanometer TiB of 40nm
2Ceramic particle 20 grams, acetone 150 grams.
The preparation process:
(1) with the above-mentioned epoxy resin that takes by weighing, quadrol, nanometer TiB
2Ceramic particle, acetone carry out ultrasonic dispersing 25min, and are mixed into steeping fluid, and the temperature that in mixing process, keeps steeping fluid is about 40 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 13min, take out carbon fiber sheet then and put into air dry oven and carry out dry 20h in 60 ℃;
(3) put into vulcanizing press in 135 ℃ of hot-press solidifying 25min with 4 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 190 ℃ loft drier and is cured thermal treatment 14h, and temperature rise is 4 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.138, and dynamic friction factor is 0.140 ~ 0.151, and 300 arresting wear rates of material are 1.1 * 10
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3/ J.
Embodiment 4:
Each composition weight of wet type composite friction material: carbon fiber sheet 700 grams, oxirane value are 0.40 epoxy resin 250 grams, and quadrol 70 grams, particle diameter are nano TiC ceramic particle 40 grams of 80nm, absolute ethyl alcohol 300 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, quadrol, nano TiC ceramic particle, absolute ethyl alcohol are carried out ultrasonic dispersing 30min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 45 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 17min, take out carbon fiber sheet then and put into air dry oven and carry out dry 24h in 75 ℃;
(3) put into vulcanizing press in 150 ℃ of hot-press solidifying 20min with 8 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 200 ℃ loft drier and is cured thermal treatment 9h, and temperature rise is 5 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.136, and dynamic friction factor is 0.135 ~ 0.157, and 300 arresting wear rates of material are 0.89 * 10
-8Cm
3/ J.
Embodiment 5:
Each composition weight of wet type composite friction material: carbon fiber sheet 650 grams, oxirane value are 0.35 epoxy resin 200 grams, and quadrol 65 grams, particle diameter are nano SiC ceramic particle 30 grams of 65nm, acetone 225 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, quadrol, nano SiC ceramic particle, acetone are carried out ultrasonic dispersing 35min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 10min, take out carbon fiber sheet then and put into air dry oven and carry out dry 36h in 50 ℃;
(3) put into vulcanizing press in 155 ℃ of hot-press solidifying 15min with 6 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 210 ℃ loft drier and is cured thermal treatment 10h, and temperature rise is 4 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.131, and dynamic friction factor is 0.140 ~ 0.150, and 300 arresting wear rates of material are 1.2 * 10
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Embodiment 6:
Each composition weight of wet type composite friction material: carbon fiber sheet 600 grams, oxirane value are 0.32 epoxy resin 200 grams, and quadrol 65 grams, particle diameter are nano SiC ceramic particle 25 grams of 55nm, acetone 280 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, acid anhydrides, nano SiC ceramic particle, acetone are carried out ultrasonic dispersing 40min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 10min, take out carbon fiber sheet then and put into air dry oven and carry out dry 36h in 50 ℃;
(3) put into vulcanizing press in 160 ℃ of hot-press solidifying 10min with 5 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 200 ℃ loft drier and is cured thermal treatment 10h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.140, and dynamic friction factor is 0.145 ~ 0.165, and 300 arresting wear rates of material are 1.1 * 10
-8Cm
3/ J.
Embodiment 7:
Each composition weight of wet type composite friction material: carbon fiber sheet 400 grams, oxirane value are 0.24 epoxy resin 100 grams, quadrol 50 grams, and particle diameter is the nanometer TiB of 20nm
2Ceramic particle 10 grams, acetone 100 grams.
The preparation process:
(1) with the above-mentioned epoxy resin that takes by weighing, quadrol, nanometer TiB
2Ceramic particle, acetone carry out ultrasonic dispersing 25min, and are mixed into steeping fluid, and the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 10min, take out carbon fiber sheet then and put into air dry oven and carry out dry 36h in 50 ℃;
(3) put into vulcanizing press in 130 ℃ of hot-press solidifying 30min with 7 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 220 ℃ loft drier and is cured thermal treatment 8h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.136, and dynamic friction factor is 0.134 ~ 0.149, and 300 arresting wear rates of material are 0.87 * 10
-8Cm
3/ J.
Embodiment 8:
Each composition weight of wet type composite friction material: carbon fiber sheet 450 grams, oxirane value are 0.24 epoxy resin 100 grams, and quadrol 50 grams, particle diameter are nano SiC ceramic particle 10 grams of 20nm, acetone 130 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, Dyhard RU 100, ceramic of nano SiC, acetone are carried out ultrasonic dispersing 30min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 15min, take out carbon fiber sheet then and put into air dry oven and carry out dry 36h in 50 ℃;
(3) put into vulcanizing press in 130 ℃ of hot-press solidifying 30min with 3 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 180 ℃ loft drier and is cured thermal treatment 15h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.130, and dynamic friction factor is 0.136 ~ 0.150, and 300 arresting wear rates of material are 0.93 * 10
-8Cm
3/ J.
Embodiment 9:
Each composition weight of wet type composite friction material: carbon fiber sheet 800 grams, oxirane value are 0.45 epoxy resin 300 grams, and quadrol 80 grams, particle diameter are nano TiC ceramic particle 50 grams of 100nm, acetone 450 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, acid anhydrides, nano TiC ceramic particle, acetone are carried out ultrasonic dispersing 40min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 50 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 20min, take out carbon fiber sheet then and put into air dry oven and carry out dry 18h in 90 ℃;
(3) put into vulcanizing press in 160 ℃ of hot-press solidifying 10min with 10 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 220 ℃ loft drier and is cured thermal treatment 8h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.133, and dynamic friction factor is 0.140 ~ 0.153, and 300 arresting wear rates of material are 1.2 * 10
-8Cm
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Embodiment 10:
Each composition weight of wet type composite friction material: carbon fiber sheet 400 grams, oxirane value are 0.24 epoxy resin 100 grams, and quadrol 50 grams, particle diameter are nano SiC ceramic particle 10 grams of 20nm, acetone 100 grams.
The preparation process:
(1) the above-mentioned epoxy resin that takes by weighing, quadrol, ceramic of nano SiC, acetone are carried out ultrasonic dispersing 25min, and be mixed into steeping fluid, the temperature that in mixing process, keeps steeping fluid is about 30 ℃;
(2) carbon fiber sheet is put into the steeping fluid for preparing and soak 10min, take out carbon fiber sheet then and put into air dry oven and carry out dry 30h in 75 ℃;
(3) put into vulcanizing press in 140 ℃ of hot-press solidifying 25min with 5 layers through immersion, dried carbon fiber sheet, temperature rise is lower than 6 ℃ in hot pressing, exits 3 times;
(4) carbon fiber sheet after will suppressing is put into 180 ℃ loft drier and is cured thermal treatment 15h, and temperature rise is 3 ℃/min; At last, it being cooled to room temperature gets product.
(5) friction materials with gained detects through MM-2000 type friction material test machine, pressure 2MPa, and rotating speed 3500r/min, recording static friction factor is 0.132, and dynamic friction factor is 0.136 ~ 0.142, and 300 arresting wear rates of material are 0.96 * 10
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3/ J.