CN102391814A - Abrasion-resistant repair agent - Google Patents
Abrasion-resistant repair agent Download PDFInfo
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- CN102391814A CN102391814A CN2011102930586A CN201110293058A CN102391814A CN 102391814 A CN102391814 A CN 102391814A CN 2011102930586 A CN2011102930586 A CN 2011102930586A CN 201110293058 A CN201110293058 A CN 201110293058A CN 102391814 A CN102391814 A CN 102391814A
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Abstract
The invention provides an abrasion-resistant repair agent and a preparation method thereof. The repair agent is an epoxy toughened and modified normal temperature cured high-performance abrasion-resistant adhesive which is designed by optimizing the formula according to the main requirement of abrasion resistance and the requirement of antifriction and has excellent comprehensive performance. The repair agent is prepared by double-component reaction, the assimilated adhesive layer is black, the bonding strength of the repair agent reaches over 56MPa, and the using temperature of the repair agent is 60 to 190 DEG C. The repair agent has the advantages of high adhesive strength and good abrasion resistance, oil resistance, water resistance and medium resistance, is mainly used for coating repair of the abraded surface of an axle hole, and can also be used for cementing of high-strength structures.
Description
Technical field
The present invention relates to a kind of wear-resisting healant, especially a kind of pair of epoxide modified normal temperature cured type high performance alloys of component response type, ceramic wear-resisting healant.
Background technology
Surface Engineering is paid much attention to as the important means of maintenance day by day.As Surface Engineering subject important component part n9 sufacing; The surface recovery technique comprises platings, brush plating, thermospray, bonding sticking be coated with etc., and these restorative procedures replenish each other, become the means emergency schedule of ME necessity; Repair scrapped parts; Old part is come back to life, and for enterprise retrieves the tremendous economic loss, ME has become the organic component of yield-power.
The surface cohering technology in recent years, has been brought into play significant role and has been obtained good social benefit and huge economic benefit as representing one of surface technology in the ME field.
The surface cohering technology is compared with built-up welding, thermospray, brush plating; Its technology is easy; Do not need Special Equipment, need not to consume heat energy and electric energy, only need the face of repairing watch of waiting that it is good that the healant for preparing be coated on cleaning get final product, after solidifying as hard as the metal; Can carry out various mechanical workouts, satisfy that part is wear-resisting, anti-corrosion, maintenance needs such as resizing, defective are filled up, sealing and plugging.General ambient temperature curable does not have heat affected zone and thermal distortion to part, but and site work, reduce stop time.Its time and labour saving, save energy and substantial contribution are a kind of quick and inexpensive repairing techniques, are the effective means of ME, will develop into important one of the surface technology of representing.
Metal repairing agent is surface cohering and a cementitious gordian technique in the ME; It is by high molecular polymer and metal-powder, ceramic powder and fibrous pair of component (or many components) clay shape matrix material; Be widely used in wear-resistant, corrosion-resistant reparation of part and preparatory supercoat and be used for repairing various defectives of part (like crackle, scuffing, dimension overproof, blow hole, sand holes) and sealing and plugging etc.; Its technology is simple and easy to do; Only need two components are mixed in proportion, be coated on, solidify the back finishing and get final product through the surface of rust cleaning, oil removing; Be a kind of saving of labor, save time, economic, durable, flexible, convenient, the novel patching material of ideal, be one of matrix material at present with fastest developing speed.
This patching material abroad just begins one's study from the fifties end; U.S. Belzona high polymer alloy healant for example; Germany Diamant product is also world-famous; Can be used to repair various materials, can be used for repairing metal, rubber, pottery etc., can select the healant of the different trades mark according to conditions such as different use temperatures, pressure, media for use.The MEcATeC product of Switzerland Castolin company also has tens kinds, in the ME of multiple industries such as casting, cement, sugaring, railway, electronics, has obtained using widely.In addition, fill up agent, wear-resisting glue though more domestic units develop some metals, performance can't satisfy the request for utilization of ME.The patching material of above-mentioned external development; Though performance is higher than home products; China's the eighties was just once used German Diamant product to tank track kiss-coating plate, but intensity, heat resistance still are difficult to reach the requirement of harsh equipment such as the performance requriementss of repairing war industry equipment or intensity, and the price of import healant and costliness thereof; Consume a large amount of foreign exchanges, cause enterprise aspect ME, to consume a huge sum of money.
The serial wear-resisting healant bonding strength of the present invention development is high, wear-resistant, and oil resistant, medium-resistance are good, is applicable to the manufacturing and the apparatus maintenance of industry products such as aerospace, military project, machinery, shipbuilding, electronics, electrical equipment, automobile, light industry, agricultural machinery.Be mainly used in the wearing and tearing of axial workpiece, bearing saddle bore, hydraulic ram, plunger and the reparation of pulling, the structure that also can be used for fractured part is bonding, the filling up of bleb, sand holes.
Summary of the invention
The composition of healant can be divided into sizing, solidifying agent, toughner, particular fillers, thinner, coupling agent, anti-aging agent, thixotropic agent, skimmer, promotor etc.Sizing is selected epoxy resin, resol, unsaturated polyester, urethane, silicone resin etc. for use, and filler can be divided into metal-powder (like iron powder, aluminium powder, copper powder, lead powder etc.), ceramic powder (WC, SiC, A1
2O
3, BC, Cr
2O
3, SiO
2, silica sand etc.) and graphite, MoS
2, antifriction materials such as polytetrafluoroethylene.Two two component healants, two components are mixed use by a certain percentage during coating, generally are made up of sizing, solidifying agent and filler (abbreviation particular fillers) and subsidiary material with certain characteristic (wear-resisting, against corrosion, insulation, conduction etc.).
1, sizing
Or the title base-material, like thermosetting resin, viton etc.Thermosetting resin such as epoxy, phenolic aldehyde, urethane, unsaturated polyester, acrylic acid ester etc. have the three-dimensional crosslinking structure, and are heat-resisting, water-fast, resistance to medium is good, in healant, use more.
The effect of sizing is to contain the various materials in the healant and stick to matrix surface securely to form coating, therefore, and for the sizing of adhesive coating layer should have following performance:
(1) coated matrix and filler there is higher binding strength.
(2) cured article should have higher physical strength and good heatproof, oil resistant, chemically-resistant and ageing resistance, and its Young's modulus wants high with stability.
(3) the cured article shrinking percentage is little.
2, solidifying agent
The effect of solidifying agent is and sizing generation chemical reaction, forms netted space polymer, in the body of dictyosome, forms the crosslinked combination of three-dimensional to the filler envelope.
Requirement with solidifying agent is generally to healant:
(1) cured article hardness is high, good toughness, and wear resistance is good, and solidity to corrosion, medium-resistance are good or the like.
(2) preferably can self-vulcanizing, set time is short.
Healant of the present invention is generally amine curing agent with solidifying agent, adopts aminated compounds as solidifying agent, makes healant that higher degree of cure and outstanding resistance toheat arranged.
3, particular fillers
Particular fillers plays important effect in healant, like antiwear and antifriction, anti-corrosion, insulation, conduction etc.Therefore the selection of particular fillers is most important to the performance of coating, needs and the chemical terms consideration from maintenance, filler is required be:
(1) filler should be neutral or weakly alkaline, does not contain combination water, and is good with the sizing affinity, and liquid is not had adsorptivity or adsorptivity is seldom arranged.
(2) enough thermotolerances and certain purity to be arranged, if filler absorption impurity can cause the resin degraded.
(3) require particle or grain density little, scattered, sedimentation is little in resin.
The healant filler comprises powder or the fiber with a certain size; Like hard particles such as metal-powder, oxide compound, carbide, nitride even diamond, boride or fiber, graphite, molybdenumdisulphide, polytetrafluoroethylene etc., according to the wear-resistant filler of the optional hard of different coatings.
4, subsidiary material
Subsidiary material comprise toughner, plasticity, thinner, curing catalyst, coupling agent, skimmer, anti-aging agent etc., its effect be improve coating performance such as toughness, resistance to deterioration etc. and reduce glue viscosity, improve coating quality etc.
According to above-mentioned four kinds of component roles, according to different working conditionss and performance requriements, through preferred suitable material and the proportioning of test, the healant of preparation various requirement.
In addition, the present invention also provides the working method of above-mentioned wear-resisting healant.
The present invention provides a kind of wear-resisting healant, is mixed by A component and B component, and wherein the A component is epoxy resin E51, dibutylester, norbide, aluminium sesquioxide, white titanium pigment, spun glass and WHITE CARBON BLACK; The B component is KH550 silane coupling agent, DMP-30 (2,4,6-three (dimethylamino methyl) phenol) and WHITE CARBON BLACK; The weight proportion of A component and B component is 5:1 ~ 8:1, and optimum ratio is 6:1.
The prescription that adopts in the concrete production process is following: the A component is epoxy resin E51 2900g, dibutylester 208g, norbide 932g, aluminium sesquioxide 4140g, white titanium pigment 205.5g, spun glass 82.8g and WHITE CARBON BLACK 720g; The B component is KH550 silane coupling agent 129.2g, DMP-30 (2,4,6-three (dimethylamino methyl) phenol) 193.2g and WHITE CARBON BLACK 239.3g; The use of healant is the ratio of 5:1 ~ 8:1 with above-mentioned A, B component by weight ratio, and the ratio of preferred 6:1 takes by weighing, and mixes.
Wear-resisting healant by the said ratio preparation; Be epoxy toughening modification normal temperature cured type, with special ceramal powder, with wear-resisting be to lead and consider the antifriction requirement and the high-performance abrasion-proof tackiness agent of optimization of C design synthesis excellent property; Two component response types; Cured glue layer black in color, bonding strength reaches more than the 52MPa, 60～190 ℃ of use temperatures; This product adhesive strength is high, wear-resistant, oil resistant, water-fast, medium-resistance is good, what be mainly used in the axis hole wear surface stickingly is coated with reparation, also can be used for high-strength structure and glued joint.
The preparation method of wear-resisting healant of the present invention comprises the steps:
1. the assistant coating formulation optimization that uses a computer designs, and obtains the prescription of above-mentioned healant;
At first starting material have been carried out preferably; Through a large amount of simultaneous tests; And then the factor such as filling kind, filling adding amount, filler granularity, solidifying agent, toughner kind and the add-on that influence coating abrasion performance, hardness, intensity carried out single factor experiment; Confirm the optimum range of each composition, with the design of computingmachine assistant coating formulation optimization, obtained optimum formula at last.
The process that the area of computer aided coating is optimized is following: the design of variable factor level---formula test------prescription optimization---optimization formula of setting up mathematical model.
Can know that by the result the wear-resisting healant coating formula performance of computer aided optimum obviously improves, and compares with the prescription of general extremum method optimization, improves 20% approximately.
2. starting material are anticipated;
1) starting material in bulk and that make moist is dried down at 100 ℃;
2) the heavy-gravity starting material are added heat gain flowability, but temperature can not surpass 60 ℃, in case rotten;
3), grind and sieve and get fine particle materials to coarse grained pulvis starting material;
3.A, the preparation of B component
Take by weighing A component starting material by prescription, epoxy resin E51, dibutylester are placed duplicate rows star dynamic mixing still, be heated to 90 ℃; Stir 30min; Add norbide, aluminium sesquioxide, white titanium pigment, spun glass and WHITE CARBON BLACK, high-speed stirring 30min is cooled to 40 ℃ then to mixing; Vacuumize and stirring at low speed 20min, it is subsequent use to obtain the A component;
Take by weighing B component starting material by prescription, KH550 silane coupling agent and DMP-30 are placed duplicate rows star dynamic mixing still, mix and stir 30min, add WHITE CARBON BLACK and continue to stir 30min to mixing, vacuumize then and stirring at low speed 20min, it is subsequent use to obtain the B component;
4. the preparation of healant
Press A, B two component weight ratio A:B=5:1 ~ 8:1; The ratio weighing of preferred 6:1 is taken out, and promptly uses after stirring, and the glue for preparing is when 20 ℃ of left and right sides of room temperature; Be preferably in 30 ~ 40min and use up; In order to avoid viscosity increase influence tackiness agent with by the infiltration of sticking part with bondingly stickingly be coated with effect, join the glue amount and how much look the correction of the defect size and decide, at present with join at present.
Under the concrete preparation steps:
1), waiting to repair the position purifies with the decontamination of acetone (analytical pure) degreasing degreasing;
2), the axial workpiece best car that weares and teares goes out cutter flower (ap=0.4; F=0.7); Generalized case can be used roughening treatments such as file, sand paper, hand operated grinding wheel, rotary file, roughness (
) be advisable (the available chemical method of having ready conditions carries out chemical treatment to the surface);
3), wearing and tearing with pull surperficial uniform gluing, reserve process redundancy;
4), general ambient temperature curable, if heating (50 ~ 60 ℃) solidifies, then intensity can improve (treat when being heating and curing preliminary gel after reheat) greatly;
5), turning or by hand the polishing to size that requires and tolerance.
Precaution
Storing the quality guaranteed period is 2 years.
Beneficial technical effects of the present invention is:
1, cured article should have higher physical strength and good heatproof, oil resistant, chemically-resistant and ageing resistance; 2, wear-resisting healant TCY205 (100Kg/cm2) wear resistance under the low-stress operating mode is suitable with brush plating nickel, is 1.5 times of 45 steel (modifier treatment HB320-259).
Description of drawings
Fig. 1 is a tension specimen;
Fig. 2 is for shearing sample;
Fig. 3 is the resistance to compression sample;
Fig. 4 is the wearing test sample.
Embodiment
Below in conjunction with embodiment 1-3 the present invention is further specified, but the present invention never is confined to these embodiment.
Embodiment 1-3
The A component is epoxy resin E51 2900g, dibutylester 208g, norbide 932g, aluminium sesquioxide 4140g, white titanium pigment 205.5g, spun glass 82.8g and WHITE CARBON BLACK 720g; The B component is KH550 silane coupling agent 129.2g, DMP-30 (2,4,6-three (dimethylamino methyl) phenol) 193.2g and WHITE CARBON BLACK 239.3g; The use of healant for the ratio of 5:1 ~ 8:1 takes by weighing, mixes above-mentioned A, B component by weight ratio.The concrete proportioning of each embodiment is as shown in table 1.
Table 1
| |
1 | 2 | 3 |
| The trade mark | TCY204 | TCY205 | TCY206 |
| A, B ratio | 5:1 | 6:1 | 8:1 |
Tensile strength, tensile shear strength, compressive strength, hardness, wear resistance, 7 performance index of erosion resistance and temperature tolerance are tested by the Ministry of Chemical Industry and national standard, and testing method and test result are following:
3.1 tensile strength
(1) testing method:
1, sample (specimen shape, size as shown in Figure 1)
Attention: the splicing face of sample should be the plane, and vertical with the main shaft of sample; Adhesively bonded joint should use the tackiness agent of capacity, and makes the glue of slightly having a surplus around the joint, avoids occurring starved joint, and excessive glue needn't be removed usually.
2, testing installation:
Puller system should make the sample failure load at 10%～90% of pulling force full range, and the measuring error of puller system is not more than 1%, and puller system should be able to increase load in constant speed ground.
3, test conditions:
When not having particular requirement, the test conditions of recommending by GB2918 carries out, and promptly temperature is 23 ± 2 ℃, relative humidity (50 ± 5) %.
4, test-results:
(1) tensile strength is calculated by formula (1):
Maximum load (N) when P one sample destroys;
A one bond area (mm2).
(2) only if regulation is arranged in the adhesive products standard in addition, tensile strength values is in five efficiency test results' arithmetical av.
(2) test result
The tensile strength test result sees table 2.
Table 2 tensile strength test result
3.2 tensile shear strength
Testing method:
1, sample
Very little as shown in Figure 2 to the greatest extent on the specimen shape.
2, testing installation
(1) trier that uses should make the sample destruction load the full scale load 15%～85% between, the power value indication error of trier should be greater than 1%, trier should guarantee that the translational speed of specimen holder keeps stablizing among 5 ± 1mm/1min;
(2) glueing joint the tinsel surface of usefulness should be smooth, the bending that do not have, lifts up song, distortion such as crooked.Tinsel should not have burr, and the edge keeps the right angle;
(3) the preparation sample all should use anchor clamps, correctly overlaps and accurately locatees to guarantee sample.
3, test conditions
Unless otherwise prescribed, the storage period of sample and testing circumstance should meet the following requirements:
(1) the well back shortest time to test of specimen preparation is 16h, and maximum duration is 1 month:
(2) test should be carried out in temperature is 23 ± 2 ℃ environment.Arbitration test or should be that 234 ± 2 ℃, relative humidity are to carry out in 45%～55% the environment in temperature to the tackiness agent of temperature, humidity sensitive;
(3) to the test of temperature requirement is only arranged, sample should not be less than half a hour in the following storage period of test temperature before the test; To the test of temperature, humidity requirement is arranged, the storage period of sample under testing circumstance generally should not be less than 16h before the test.
4, test-results
(1) tensile shear strength calculates by formula (2):
Maximum load (N) when P--destroys;
B--sample bonding plane width (mm);
L--sample bonding plane length (mm).
(2) test-results is represented with arithmetical av, mxm., the Schwellenwert of shearing resistance, gets four position effective digitals.
(2) test result
The tensile shear strength test-results is seen table 3.
Table 3 tensile shear strength test-results
3.3 ultimate compression strength
(1) testing method
1, sample
(1) glue Chinese catalpa shape, size are as shown in the figure
(2) upper and lower end face of glue post should be the plane, and vertical with the main shaft of glue post.
2, testing installation
Trier should make the sample failure load at 10%～90% of full range, and the measuring error of trier is not more than 1%.
3, test conditions
Trier pressure head translational speed is ± 0.2mm/min.
4, test-results
(1) ultimate compression strength is calculated by formula (3);
B=P／A
B one ultimate compression strength (MPa) in the formula;
Maximum load (N) when P one destroys;
A one glue post cross-sectional area (mm
2).
(2) test result
Table 4 compressive strength test result
3.4 hardness
(1) testing method:
1, sample
(1) glue-line answers thickness even, smooth surface, smooth, no bubble, has no mechanical damage and impurity etc.;
(2) bondline thickness should be not less than 3 millimeters;
(3) sample size should guarantee that each MP and sample Edge Distance are not less than 12 millimeters, and the distance between each MP is not less than 6 millimeters;
(4) every group of sample measurement counted and is no less than 5, can on one or several sample, carry out.
2, testing installation
(1) this test equipment used is the xHS.D Shore durometer.
(2) hardness permission maximum deviation is ± 1 Shore durometer number.
3, test conditions
(1) during no particular requirement, sample should be placed in testing circumstance 1 hour at least before the test.
(2) pressing and reading immediately after sample contacts 15 seconds fully if regulation is wanted instantaneous reading, then contact reading in back 1 second at pressing and sample fully.
4, test-results
(1) reading that obtains on the reading scale is the Shore durometer number of being measured.
(2) every group of sample measurement counted and is no less than 5, can on one or several sample, carry out, and test-results is with the arithmetical mean value representation of one group of sample.
(2) test result
The hardness test result sees table 5.
Table 5. the hardness test result
3.5 wear resistance
(1) testing method
1, sample
(1) specimen shape, size are as shown in Figure 4;
(2) matrix of samples is 45 steel, and coating and matrix bond are firm, the coatingsurface zero defect.
2, testing installation
(1) this test equipment used is SKODA-SAVIN friction wear testing machine;
(2) emery wheel is 40 wimet, surface roughness Ra 0.03;
(3) emery wheel rotating speed: n=675r/rain.
3, test conditions
(1) before the test, specimen surface polishes;
(2) preload: p=5Kg;
(3) total revolution: N=3000r;
(4) emery wheel be coated with interlayer spray 50%K
2CrO
7The aqueous solution.
4, test-results
(1) measure the polishing scratch width B with eyepiece, tabling look-up draws corresponding wear volume, calculates its wear resistance;
(2) test-results is to be no less than the arithmetical mean value representation of three test blocks.
(2) test result
Wearing test result sees table 6
Table 6. wearing test result
3.6 erosion resistance
(1) TP
1, sample
Cast out 20 * 24 sample with plastics tubing
2, corrosive fluid
3, test conditions
(soil) test is at room temperature carried out;
(2) regularly observe, all around back record observations.
(2) test-results
The anti-corrosion test result sees table 7.
Table 7. anti-corrosion test result
In 2 tables "/" be that no this item is tested
3.7 temperature tolerance
(1) testing method
1, sample
Tackiness agent evenly is coated in 45 steel matrix surface, bondline thickness 2mm.
2, test conditions
Put into baking oven to the sticking sample that coats, progressively heat, behind the insulation certain hour, observe the glue-line changing conditions to the desired temperature of test.
(2) test result
The temperature tolerance test-results is seen table 8.
Table 8 heatproof test-results
Claims (5)
1. a wear-resisting healant is mixed by A component and B component, and wherein the A component is epoxy resin E51, dibutylester, norbide, aluminium sesquioxide, white titanium pigment, spun glass and WHITE CARBON BLACK; The B component is KH550 silane coupling agent, DMP-30 (2,4,6-three (dimethylamino methyl) phenol) and WHITE CARBON BLACK; The weight proportion of A component and B component is 5:1 ~ 8:1.
2. wear-resisting healant according to claim 1 is characterized in that, the weight proportion of A component and B component is preferably 6:1.
3. wear-resisting healant according to claim 1; It is characterized in that the concrete content of each component is following: the A component is epoxy resin E51 2900g, dibutylester 208g, norbide 932g, aluminium sesquioxide 4140g, white titanium pigment 205.5g, spun glass 82.8g and WHITE CARBON BLACK 720g; The B component is KH550 silane coupling agent 129.2g, DMP-30 (2,4,6-three (dimethylamino methyl) phenol) 193.2g and WHITE CARBON BLACK 239.3g.
4. according to the preparation method of each described wear-resisting healant of claim 1-3, comprise the steps:
1) use a computer assistant coating formulation optimization design obtains the prescription of above-mentioned healant;
2) starting material are anticipated;
3) preparation of A, B component
Take by weighing A component starting material by prescription, epoxy resin E51, dibutylester are placed duplicate rows star dynamic mixing still, be heated to 90 ℃; Stir 30min; Add norbide, aluminium sesquioxide, white titanium pigment, spun glass and WHITE CARBON BLACK, high-speed stirring 30min is cooled to 40 ℃ then to mixing; Vacuumize and stirring at low speed 20min, it is subsequent use to obtain the A component;
Take by weighing B component starting material by prescription, KH550 silane coupling agent and DMP-30 are placed duplicate rows star dynamic mixing still, mix and stir 30min, add WHITE CARBON BLACK and continue to stir 30min to mixing, vacuumize then and stirring at low speed 20min, it is subsequent use to obtain the B component;
4) preparation of healant
Ratio weighing in A, B two component weight ratios is taken out, and promptly uses after stirring.
5. the preparation method of wear-resisting healant according to claim 4 is characterized in that, starting material is anticipated comprise:
1) starting material in bulk and that make moist is dried down at 100 ℃;
2) the heavy-gravity starting material are added heat gain flowability, but temperature can not surpass 60 ℃, in case rotten;
3), grind and sieve and get fine particle materials to coarse grained pulvis starting material.
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|---|---|---|---|
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| CN106118002A (en) * | 2016-07-02 | 2016-11-16 | 黄绍华 | A kind of composite repairing material and application thereof and construction method |
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| CN107903856A (en) * | 2017-12-05 | 2018-04-13 | 苏州市宽道模具机械有限公司 | A kind of mould proof wear-resistant healant and preparation method thereof |
| CN109913164A (en) * | 2019-03-07 | 2019-06-21 | 海南必凯水性新材料有限公司 | A kind of wear-resistant daub |
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