CN105295839A - Resin-based friction material with ceramic polishing waste material as filler and preparation method thereof - Google Patents
Resin-based friction material with ceramic polishing waste material as filler and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a preparation method of a resin-based friction material with a ceramic polishing waste material as a filler. The preparation method includes the following steps: firstly, carrying out ball milling of the ceramic polishing waste material for 2-3 h, then passing through a 200 mesh sieve, according to the mass fraction, adding 54.7%-63.7% of the waste material particles after sieving and 36.3%-45.3% of a chopped carbon fiber in an aqueous solution of a silane coupling agent, fully mixing, filtering out, drying, and thus obtaining a pretreated mixture; then fully mixing 20-26 parts by mass of the pretreated mixture, 56-64 parts by mass of a phenolic resin and 16-26 parts by mass of a friction performance regulator to obtain a friction material mixture; and finally, loading the friction material mixture into a mould preheated up to 80-90 DEG C, carrying out primary hot pressing treatment on the mould at the temperature of 130-135 DEG C and the pressure of 5-7 MPa, after pressure relieving, at the temperature of 160-170 DEG C and the pressure of 5-7 MPa, carrying out secondary hot pressing treatment, and finally annealing to obtain the product. The preparation method can improve the resin-based synthetic tribological performance, and also can effectively ease the problems of difficult application and treatment of the ceramic polishing waste material.
Description
Technical field
The present invention relates to the preparation method of resin-matrix friction material, be specifically related to a kind of with ceramic polished waste material resin-matrix friction material that is filler and preparation method thereof.
Background technology
The fast development of social economy and ceramic industry, ceramic industry waste material is increasing, and it is not only exerted heavy pressures on to urban environment, but also limits the Sustainable development of ceramic industry, so the treatment and utilization of ceramic industry waste material is extremely important.Current ceramic waste material classification mainly contains, base substrate waste material, and useless glaze, burns till waste material and polished waste material etc.The process approach of various waste material, is roughly divided into following several: (1) is for the preparation of road pavements.Be in the Chinese patent " a kind of road pavements utilizing ceramic waste material and preparation method thereof " of CN201410341102 at application number, ceramic body waste material be applied in road pavements as coarse-fine aggregate, reach good environmental benefit; (2) application number is the Chinese patent " a kind of method utilizing ceramic waste material to prepare aerating hollow brick " of CN201210221709.5, provides a kind of method be applied to after pulverization process again by ceramic block waste material in the production of aerating hollow brick; (3) number of patent application is the Chinese patent " air-entrained concrete building block that a kind of ceramic waste material is produced and manufacture method thereof " of CN201010504967.5, using ceramic polished waste material through sorting, fragmentation, magnetic separation, after drying and other steps, the powder of gained has prepared air-entrained concrete building block as part material, can reach good effect; (4) processing mode of other ceramic waste materiaves such as landfill method.The above-mentioned processing mode listing multiple ceramic waste material.Although aforesaid method has good process to ceramic waste material, be mostly object with ceramic block material, for the polishing abrasive dust waste material that ceramic deep processing produces, also there is no good treatment process so far.
Resin base synthetic friction material primarily of resin matrix, fiber reinforcement phase, filler, frictional property regulator etc. four part composition.Carrying out particle reinforce by adding filler, is the important method of modified friction material.Research for particle reinforce modified resin base composite friction material is a lot, in document " montmorillonite intercalation modified phenolic resin composite material and friction and wear behavior thereof ", Xu Wen etc. have prepared imvite modified phenolic resin-base composite and have studied its friction and wear behavior, significantly improve the resistance toheat of matrix material.Prepare flyash by dry method heat technique in Wang Zhanhong etc. " flyash strengthens resin-matrix friction material wear debris topography " and strengthen resin-matrix friction material, and test its friction and wear behavior, result shows, to add in friction materials as filler with flyash and improve and stabilize its frictional coefficient, reduce wear rate.To sum up, suitable particle reinforce friction materials effectively can improve the tribological property of material.
Summary of the invention
The object of the present invention is to provide a kind of with ceramic polished waste material resin-matrix friction material that is filler and preparation method thereof, to overcome the defect that above-mentioned prior art exists, the present invention can improve resin base synthesis tribological property, effectively can alleviate again the problem that ceramic polished waste material application process is difficult, the resin-matrix friction material stable friction performance utilizing the inventive method to prepare, wear-resisting, corrosion-resistant, relative density is little, specific tenacity is high.
For achieving the above object, the present invention adopts following technical scheme:
A preparation method for the resin-matrix friction material being filler with ceramic polished waste material, comprises the following steps:
Step one: by ceramic polished waste material ball milling 2 ~ 3h, then 200 mesh sieves are crossed, in massfraction, the chopped carbon fiber of the waste granules after 54.7% ~ 63.7% sieve and 36.3% ~ 45.3% is added in the silane coupling agent aqueous solution, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, is fully mixed to get friction materials compound by the pre-treated mixed material of 20 ~ 26 parts, the resol of 56 ~ 64 parts, the frictional property regulator of 16 ~ 26 parts;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 80 ~ 90 DEG C, by mould at the temperature of 130 ~ 135 DEG C, a hot-pressing processing is carried out under the pressure of 5 ~ 7MPa, after pressure release at the temperature of 160 ~ 170 DEG C, carry out secondary hot pressing process under the pressure of 5 ~ 7MPa, eventually passing the annealing resin-matrix friction material that to obtain with ceramic polished waste material be filler.
Further, to be the particle diameter that produces in polishing process of pottery the be granular mixture of 20 μm ~ 500 μm of the ceramic polished waste material described in step one.
Further, the chopped carbon fiber described in step 2 is PAN-based carbon fiber, and its length is 0.6mm ~ 1.5mm.
Further, the resol described in step 2 is cashew nut shell modified phenolic resins or nitrile rubber modified phenolic resin.
Further, the frictional property regulator described in step 2 is the mixture of one or more any mass ratioes in graphite, molybdenumdisulphide, montmorillonite, vermiculite power, mica, aluminum oxide, calcium carbonate, silica powder or barium sulfate.
Further, in step 3, the time of a hot-pressing processing is 10 ~ 20min.
Further, in step 3, secondary hot pressing process comprises 10 ~ 12 hot pressing pressure release process, and the time of each hot pressing is 3 ~ 5min.
Further, the method for annealing in step 3 is: placed 22 ~ 26 hours at 90 ~ 100 DEG C by the blank obtained after secondary hot pressing process.
A preparation method for the resin-matrix friction material being filler with ceramic polished waste material, comprises the following steps:
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 2h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 63.7% sieve and 36.3%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, drops in swing high speed mixer be fully mixed to get friction materials compound by the pre-treated mixed material of 23 parts, the resol of 59 parts, the frictional property regulator of 18 parts, wherein, and nitrile rubber modified phenolic resin; Frictional property regulator is aluminum oxide;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 90 DEG C, after matched moulds by mould at the temperature of 135 DEG C, a hot-pressing processing 15min is carried out under the pressure of 7MPa, at 170 DEG C of temperature, under the pressure of 7MPa, secondary hot pressing process is carried out after pressure release, secondary hot pressing process comprises 12 hot pressing pressure release process, the time of each hot pressing is 5min, finally the blank obtained after secondary hot pressing process is placed at 100 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 24 hours be filler.
With the resin-matrix friction material that ceramic polished waste material is filler, obtained by the preparation method of the resin-matrix friction material being filler with ceramic polished waste material.
Compared with prior art, the present invention has following useful technique effect:
The present invention proposes a kind of scheme utilizing industrial waste to prepare friction materials, adopts the ceramic polished waste material being comparatively difficult to effectively utilize to be part material.The ceramic polished waste material adopted in the present invention is the powdery waste produced in ceramic tile deep processing glossing, added to resin base synthetic friction material, resin base synthesis tribological property can be improved, effectively can alleviate again the problem that ceramic polished waste material application process is difficult, and reduce production cost.According to preparation method of the present invention, the feature that ceramic polished waste material hardness is large, particle diameter is suitable can be made full use of, and through coupling agent modified, after strengthening the bonding properties of itself and resin, machine-processed by the mechanism of particle reinforce mechanical property and solid particulate middle layer lubrication, reach the object strengthening friction materials tribological property.Thus obtained friction materials stable friction performance, wear-resisting, corrosion-resistant, relative density is little, specific tenacity is high.
Accompanying drawing explanation
The SEM figure of the friction materials of Fig. 1 prepared by embodiment 2;
The variation diagram of Fig. 2 the friction coefficient test rate of friction materials prepared by embodiment 2.
Embodiment
Below embodiments of the present invention are described in further detail:
A preparation method for the resin-matrix friction material being filler with ceramic polished waste material, comprises the following steps:
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 2 ~ 3h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm adds in the silane coupling agent aqueous solution by the length of the waste granules after 54.7% ~ 63.7% sieve and 36.3% ~ 45.3%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, the pre-treated mixed material of 20 ~ 26 parts, the resol of 56 ~ 64 parts, the frictional property regulator of 16 ~ 26 parts are dropped in swing high speed mixer and be fully mixed to get friction materials compound, wherein, resol is cashew nut shell modified phenolic resins or nitrile rubber modified phenolic resin; Frictional property regulator is the mixture of one or more any mass ratioes in graphite, molybdenumdisulphide, montmorillonite, vermiculite power, mica, aluminum oxide, calcium carbonate, silica powder or barium sulfate;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 80 ~ 90 DEG C, after matched moulds by mould at the temperature of 130 ~ 135 DEG C, a hot-pressing processing 15min is carried out under the pressure of 5 ~ 7MPa, after pressure release at the temperature of 160 ~ 170 DEG C, secondary hot pressing process is carried out under the pressure of 5 ~ 7MPa, secondary hot pressing process comprises 10 ~ 12 hot pressing pressure release process, the time of each hot pressing is 3 ~ 5min, finally the blank obtained after secondary hot pressing process is placed at 90 ~ 100 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 22 ~ 26 hours be filler.
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 2h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 54.7% sieve and 45.3%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, the pre-treated mixed material of 20 parts, the resol of 60 parts, the frictional property regulator of 20 parts are dropped in swing high speed mixer and be fully mixed to get friction materials compound, wherein, resol is cashew nut shell modified phenolic resins; Frictional property regulator is graphite;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 80 DEG C, after matched moulds by mould at the temperature of 135 DEG C, a hot-pressing processing 15min is carried out under the pressure of 7MPa, at 165 DEG C after pressure release, secondary hot pressing process is carried out under the pressure of 6MPa, secondary hot pressing process comprises 10 hot pressing pressure release process, the time of each hot pressing is 5min, finally the blank obtained after secondary hot pressing process is placed at 100 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 22 hours be filler, the frictional coefficient of prepared friction materials is between 0.27 ~ 0.39, wear rate is 6.03 ~ 6.35 × 10
-5mm
3between/(Nm).
Embodiment 2
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 2h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 63.7% sieve and 36.3%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, drops in swing high speed mixer be fully mixed to get friction materials compound by the pre-treated mixed material of 23 parts, the resol of 59 parts, the frictional property regulator of 18 parts, wherein, and nitrile rubber modified phenolic resin; Frictional property regulator is aluminum oxide;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 90 DEG C, after matched moulds by mould at the temperature of 135 DEG C, a hot-pressing processing 15min is carried out under the pressure of 7MPa, after pressure release at 170 DEG C of temperature, secondary hot pressing process is carried out under the pressure of 7MPa, secondary hot pressing process comprises 12 hot pressing pressure release process, the time of each hot pressing is 5min, finally the blank obtained after secondary hot pressing process is placed at 100 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 24 hours be filler, the frictional coefficient of gained friction materials is between 0.3 ~ 0.4, wear rate is 5.63 ~ 6.04 × 10
-5mm
3between/(Nm).
Embodiment 3
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 3h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 61.5% sieve and 38.5%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, the pre-treated mixed material of 21 parts, the resol of 56 parts, the frictional property regulator of 26 parts are dropped in swing high speed mixer and be fully mixed to get friction materials compound, wherein, resol is cashew nut shell modified phenolic resins; Frictional property regulator is the mixture of molybdenumdisulphide, montmorillonite, vermiculite power;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 90 DEG C, after matched moulds by mould at the temperature of 130 DEG C, a hot-pressing processing 15min is carried out under the pressure of 5MPa, after pressure release at 165 DEG C of temperature, secondary hot pressing process is carried out under the pressure of 7MPa, secondary hot pressing process comprises 11 hot pressing pressure release process, the time of each hot pressing is 3min, finally the blank obtained after secondary hot pressing process is placed at 90 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 26 hours be filler, the frictional coefficient of prepared friction materials is between 0.25 ~ 0.38, wear rate is 5.92 ~ 6.37 × 10
-5mm
3between/(Nm).
Embodiment 4
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 3h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 58% sieve and 42%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, drops in swing high speed mixer be fully mixed to get friction materials compound by the pre-treated mixed material of 26 parts, the resol of 64 parts, the frictional property regulator of 16 parts, wherein, and nitrile rubber modified phenolic resin; Frictional property regulator is the mixture of molybdenumdisulphide, montmorillonite, vermiculite power, mica, aluminum oxide, calcium carbonate, silica powder, barium sulfate;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 80 DEG C, after matched moulds by mould at the temperature of 130 DEG C, a hot-pressing processing 15min is carried out under the pressure of 6MPa, at 160 DEG C of temperature, under the pressure of 5MPa, secondary hot pressing process is carried out after pressure release, secondary hot pressing process comprises 11 hot pressing pressure release process, the time of each hot pressing is 3min, finally the blank obtained after secondary hot pressing process is placed at 90 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 24 hours be filler.
Claims (10)
1., with a preparation method for the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, comprise the following steps:
Step one: by ceramic polished waste material ball milling 2 ~ 3h, then 200 mesh sieves are crossed, in massfraction, the chopped carbon fiber of the waste granules after 54.7% ~ 63.7% sieve and 36.3% ~ 45.3% is added in the silane coupling agent aqueous solution, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, is fully mixed to get friction materials compound by the pre-treated mixed material of 20 ~ 26 parts, the resol of 56 ~ 64 parts, the frictional property regulator of 16 ~ 26 parts;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 80 ~ 90 DEG C, by mould at the temperature of 130 ~ 135 DEG C, a hot-pressing processing is carried out under the pressure of 5 ~ 7MPa, after pressure release at the temperature of 160 ~ 170 DEG C, carry out secondary hot pressing process under the pressure of 5 ~ 7MPa, eventually passing the annealing resin-matrix friction material that to obtain with ceramic polished waste material be filler.
2. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, to be the particle diameter that produces in polishing process of pottery the be granular mixture of 20 μm ~ 500 μm of the ceramic polished waste material described in step one.
3. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, the chopped carbon fiber described in step 2 is PAN-based carbon fiber, and its length is 0.6mm ~ 1.5mm.
4. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, the resol described in step 2 is cashew nut shell modified phenolic resins or nitrile rubber modified phenolic resin.
5. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, the frictional property regulator described in step 2 is the mixture of one or more any mass ratioes in graphite, molybdenumdisulphide, montmorillonite, vermiculite power, mica, aluminum oxide, calcium carbonate, silica powder or barium sulfate.
6. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, in step 3, the time of a hot-pressing processing is 10 ~ 20min.
7. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, in step 3, secondary hot pressing process comprises 10 ~ 12 hot pressing pressure release process, and the time of each hot pressing is 3 ~ 5min.
8. according to claim 1 a kind of with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, the method for annealing in step 3 is: placed 22 ~ 26 hours at 90 ~ 100 DEG C by the blank obtained after secondary hot pressing process.
9., with a preparation method for the ceramic polished waste material resin-matrix friction material that is filler, it is characterized in that, comprise the following steps:
Step one: the particle diameter produced in polishing process by pottery is granular mixture ball milling 2h in planetary ball mill of 20 μm ~ 500 μm, then 200 mesh sieves are crossed, in massfraction, be that the PAN-based carbon fiber of 0.6mm ~ 1.5mm specification adds in the silane coupling agent aqueous solution by the length of the waste granules after 63.7% sieve and 36.3%, leach after abundant mixing, dry, obtain pre-treated mixed material;
Step 2: in mass fraction, drops in swing high speed mixer be fully mixed to get friction materials compound by the pre-treated mixed material of 23 parts, the resol of 59 parts, the frictional property regulator of 18 parts, wherein, and nitrile rubber modified phenolic resin; Frictional property regulator is aluminum oxide;
Step 3: friction materials compound is loaded in the mould of pre-heating temperature elevation to 90 DEG C, after matched moulds by mould at the temperature of 135 DEG C, a hot-pressing processing 15min is carried out under the pressure of 7MPa, at 170 DEG C of temperature, under the pressure of 7MPa, secondary hot pressing process is carried out after pressure release, secondary hot pressing process comprises 12 hot pressing pressure release process, the time of each hot pressing is 5min, finally the blank obtained after secondary hot pressing process is placed at 100 DEG C the resin-matrix friction material that namely to obtain with ceramic polished waste material in 24 hours be filler.
10. with the resin-matrix friction material that ceramic polished waste material is filler, it is characterized in that, by obtaining with the preparation method of the ceramic polished waste material resin-matrix friction material that is filler described in any one of claim 1 ~ 9.
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| CN112694767A (en) * | 2020-12-28 | 2021-04-23 | 杭州临安华龙摩擦材料有限公司 | Friction material and preparation method thereof |
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