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CN104761995A - SiO2/epoxy resin-based gradient composite wear-resistant coating and preparation method thereof - Google Patents

SiO2/epoxy resin-based gradient composite wear-resistant coating and preparation method thereof Download PDF

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Publication number
CN104761995A
CN104761995A CN201510036343.8A CN201510036343A CN104761995A CN 104761995 A CN104761995 A CN 104761995A CN 201510036343 A CN201510036343 A CN 201510036343A CN 104761995 A CN104761995 A CN 104761995A
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Prior art keywords
epoxy resin
sio
coating
matrix
resistant coating
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CN201510036343.8A
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Chinese (zh)
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CN104761995B (en
Inventor
冯拉俊
沈文宁
李光照
杨帆
罗宏
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Xian University of Technology
Sichuan University of Science and Engineering
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Xian University of Technology
Sichuan University of Science and Engineering
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/02Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12Applying particulate materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention discloses a SiO2/epoxy resin-based gradient composite wear-resistant coating. The SiO2/epoxy resin-based gradient composite wear-resistant coating comprises an epoxy resin matrix and a SiO2 reinforced phase. The epoxy resin matrix is double-component epoxy resin. A mass ratio of the used SiO2 reinforced phase to the epoxy resin matrix is in a range of 20-45%. The invention also discloses a preparation method of the SiO2/epoxy resin-based gradient composite wear-resistant coating. The preparation method comprises carrying out sand-blasting roughening treatment on the surface of the matrix, carrying out cleaning by acetone, coating the surface of the pretreated matrix with prepared epoxy resin coating by a brusher, spray-coating the surface of the epoxy resin coating with SiO2 mixed powder, and carrying out thermal insulation at a temperature of 25-70 DEG C for 30-120min. The SiO2/epoxy resin-based gradient composite wear-resistant coating has gradually increased SiO2 particle sizes from surface to inside, has pure epoxy resin granularity gradient at the interface of the matrix and the coating, solves the problem that the existing coating has defects caused by particle settlement, and has high hardness and wear resistance. The preparation method has simple processes and a low cost.

Description

SiO 2/ epoxy resin-matrix graded composite wear-resistant coating and preparation method thereof
Technical field
The invention belongs to technical field of composite preparation, be specifically related to a kind of SiO 2/ epoxy resin-matrix graded composite wear-resistant coating, the invention still further relates to the preparation method of this wear-resistant coating.
Background technology
Use micron order SiO 2the SiO of ceramic powder filled modification 2/ epoxy composite material has a series of excellent properties such as good solidity to corrosion, wear resistance, insulativity, thermal conductivity is large, linear expansivity is low, cure shrinkage is little, low production cost, is used widely at corrosion-proof wear-resistant material and Electronic Packaging field.
At present, in order to improve the wear resistance of corrosion protection coating, people also add solid packing in cold coating, reduce the consumption of resin on the one hand, reduce costs, increase hardness and the wear resistance of coating on the other hand, but the density due to solid particulate is greater than the density of resin, therefore just there will be solids precipitation and cause coating layering bottom coating, the resin content of upper part coating is high, substantially not containing solid packing, coating abrasion performance is poor, and bottom solids content is high, resin content is few, the cohesive strength of coating is caused to reduce, powder enhancement techniques is made to be difficult to promote in antiseptic wearable coat, in order to address this problem, someone adopts stuffing surface modification process and particle nanometer two kinds of approach effectively to reduce the rate of descent of filler particles in matrix material, but its complex process, cost is higher, also be difficult to be applied in suitability for industrialized production.
Utilize stoke ' s sedimentation law, SiO 2square being directly proportional of the density difference of the settling velocity of particle in coating and particle and coating, particle diameter, is inversely proportional to dope viscosity.The particle sinking speed that filler granularity of the same race is larger is faster, and the settling velocity that density is little is little, therefore adopts the particle of different stage to mix and can form granular gradient in the coating; Raising cross linking of epoxy resin curing speed with temperature is obviously accelerated, viscosity significantly becomes large until lose flowability, make particles settling procedure ends, therefore the viscosity of epoxypaint can be controlled by control temperature, and then affect speed and the time of particles settling, control the degree of depth of particles settling, guarantee that particle is mainly distributed in the middle and upper part of coating, matrix and coating interface place are still pure epoxy resin coating.Final acquisition particle becomes the SiO of Gradient distribution 2/ epoxy resin gradient wear-resistant coating.The coating adopting this technique to prepare overcomes the defect of particles settling bottom coating occurred in blending method, has better bonding strength, wear resistance and surface hardness.
Summary of the invention
The object of this invention is to provide a kind of SiO 2/ epoxy resin-matrix graded composite wear-resistant coating, it has higher hardness and wear resisting property.
Another object of the present invention is to provide a kind of SiO 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating.
The technical solution adopted in the present invention is, SiO 2/ epoxy resin-matrix graded composite wear-resistant coating, comprises epoxy resin-base and SiO 2strengthening phase, wherein epoxy resin-base is bi-component epoxide-resin, SiO 2the amount of strengthening phase is 20% ~ 45% of epoxy resin quality.
Feature of the present invention is also,
Bi-component epoxide-resin is made up of E44 epoxy resin and low molecular polyamides solidifying agent.
SiO 2strengthening phase is by mass percentage by following varigrained SiO 2composition: 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, 40 ~ 50 μm of <5%, the mass percent sum of above each granularity is 100%.
Another technical scheme of the present invention is, SiO 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, specifically carries out according to the following steps:
Step 1, carries out SiO in proportion 2mixed powder
Taking granularity by mass percentage is respectively 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, the SiO of 40 ~ 50 μm of <5% 2powder is put into ball mill and is added alcohol and carry out ball milling, powder is mixed, then puts into drying baker and carry out drying;
Step 2, epoxypaint is allocated
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring, obtain epoxypaint;
Step 3, carries out spraying pre-treatment, brushwork epoxy resin coating
Clean with acetone after sandblasting roughening treatment is carried out to matrix surface; By epoxypaint brushing matrix surface after the pre-treatment deployed for step 2, coat-thickness controls at 100 ~ 200 μm;
Step 4, outer spray SiO 2mixed powder
By SiO 2mixed powder sprays the epoxy coating surface of brushing in step 3 uniformly by electrostatic spraying, wherein SiO 2amount be 20% ~ 45% of epoxypaint quality;
Step 5, sedimentation is solidified
Coating preparation 5 obtained is incubated 30 ~ 120min under 25 ~ 70 DEG C of conditions, namely obtains SiO 2/ epoxy resin-matrix graded composite wear-resistant coating.
Feature of the present invention is also,
In step 1, drying is incubated 2 ~ 4 hours at temperature 110 DEG C ~ 150 DEG C.
Sandblasting roughening treatment processing parameter in step 3: blasting pressure 0.4 ~ 0.6MPa, abrasive material 16 ~ 18 order silicon carbide.
In step 4, electrostatic spraying adopts electrostatic gun to carry out, and design parameter is: compressed air pressure 0.4 ~ 0.7MPa, electrostatic spraying voltage 50 ~ 60V, and spray tip is to workpiece distance 100 ~ 150mm.
The invention has the beneficial effects as follows, SiO of the present invention 2/ epoxy resin-matrix graded composite wear-resistant coating has following advantage compared with the prior art:
(1) coating exists by the inside SiO in surface 2particle increases gradually and matrix and coating interface place are still the granular gradient of pure epoxy resin, overcomes existing coating because particles settling is in bottom, the defect that surface is formed without particle reinforce;
(2) SiO prepared 2/ epoxy resin-matrix graded composite wear-resistant coating and substrate combinating strength high, there is higher hardness and wear resistance;
(3) preparation technology of coating is simple, and favorable repeatability, cost is low.
Accompanying drawing explanation
Fig. 1 is compound coating middle section size distribution prepared by different methods;
Wherein (a) existing blending method; (b) the inventive method;
Fig. 2 is SiO 2the different methods measuring 30% of epoxy resin quality prepares the erosive wear pattern of compound coating under 90 ° of erosion angles.
Wherein (I) existing blending method; (II) the inventive method.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
SiO of the present invention 2/ epoxy resin-matrix graded composite wear-resistant coating, comprises epoxy resin-base and SiO 2strengthening phase, wherein epoxy resin-base is bi-component epoxide-resin, SiO 2add that quality is epoxy resin quality 20% ~ 45% of strengthening phase.Wherein bi-component epoxide-resin is made up of E44 epoxy resin and low molecular polyamides solidifying agent.
SiO 2strengthening phase is by mass percentage by following varigrained SiO 2composition: 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, 40 ~ 50 μm of <5%, the mass percent sum of above each granularity is 100%.
Above-mentioned SiO 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, specifically carries out according to the following steps:
Step 1, carries out SiO in proportion 2mixed powder
Taking granularity by mass percentage is respectively 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, the SiO of 40 ~ 50 μm of <5% 2powder is put into ball mill and is added alcohol and carry out ball milling, powder is mixed, then puts into drying baker and carry out drying, is incubated 2 ~ 4 hours at temperature 110 DEG C ~ 150 DEG C;
Step 2, epoxypaint is allocated
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring;
Step 3, carries out spraying pre-treatment, brushwork epoxy resin coating
Clean with acetone after sandblasting roughening treatment is carried out to matrix surface; Sandblasting roughening treatment processing parameter: blasting pressure 0.4 ~ 0.6MPa, abrasive material 16 ~ 18 order silicon carbide, by epoxypaint brushing matrix surface after the pre-treatment deployed for step 2, coat-thickness controls at 100 ~ 200 μm;
Step 4, outer spray SiO 2mixed powder
By SiO 2mixed powder sprays the epoxy coating surface of brushing in step 3 uniformly by electrostatic spraying, wherein SiO 2amount be 20% ~ 45% of epoxypaint quality, design parameter is: compressed air pressure 0.4 ~ 0.7MPa, electrostatic spraying voltage 50 ~ 60V, spray tip to workpiece distance 100 ~ 150mm;
Step 5, sedimentation is solidified
Coating preparation 5 obtained is incubated 30 ~ 120min under 25 ~ 70 DEG C of conditions, namely obtains SiO 2/ epoxy resin-matrix graded composite wear-resistant coating.
SiO while curing cross-linked 2particle is sedimentation under gravity, is formed by the inside SiO in surface 2particle increases gradually and matrix and coating interface place are still the complex gradient coating of pure epoxy resin.
Embodiment 1
Material selec-tion is: bi-component epoxide-resin (E44 epoxy resin, low molecular polyamides solidifying agent), SiO 2powder Particle Size consists of 5 ~ 10 μm: 50%, 10 ~ 20 μm: 25%, 20 ~ 30 μm: 15%, 30 ~ 40 μm: 7%, 40 ~ 50 μm: 3%.
(1) mixed powder
Take the SiO of different size according to the above ratio 2powder is put into ball mill and is added alcohol and carry out ball milling, alcohol and powder quality than being 1:10, mixed powder 2 hours, powder is mixed, again the above-mentioned powder mixed is put into drying baker and carry out drying, temperature 110 DEG C insulation 4 hours, removing moisture also increases the mobility of powder.
(2) pre-treatment is sprayed
Matrix adopts Q235 steel, and specimen size is 4mm × 4mm × 4mm, with 16 order emergy sandblastings, cleans after processing with acetone again.
(3) epoxypaint allotment
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring.
(4) brushwork epoxy resin coating
Deployed epoxypaint is evenly brushed Q235 steel matrix surface after the pre-treatment, coat-thickness controls at 200 μm.
(5) SiO is sprayed outward 2powder
By SiO 2powder sprays the epoxy coating surface in just brushing uniformly by electrostatic gun, wherein SiO 2amount be 30% of epoxypaint quality.Electrostatic painting process parameter: compressed air pressure 0.7MPa, electrostatic spraying voltage 60V, spray tip is to workpiece distance 100mm.
(6) sedimentation solidification
The sample of preparation is incubated 120min under 25 DEG C of conditions, SiO 2after particles settling to certain depth, coating is solidified completely.
Embodiment 2
Material selec-tion is: bi-component epoxide-resin (E44 epoxy resin, low molecular polyamides solidifying agent), SiO 2powder Particle Size consists of 5 ~ 10 μm: 65%, 10 ~ 20 μm: 20%, 20 ~ 30 μm: 10%, 30 ~ 40 μm: 5%.
(1) mixed powder
Take the SiO of different size according to the above ratio 2powder is put into ball mill and is added alcohol and carry out ball milling, alcohol and powder quality than being 1:10, mixed powder 2 hours, powder is mixed, again the above-mentioned powder mixed is put into drying baker and carry out drying, temperature 130 DEG C insulation 3 hours, removing moisture also increases the mobility of powder.
(2) pre-treatment is sprayed
Matrix adopts Q235 steel, and specimen size is 4mm × 4mm × 4mm, with 17 order emergy sandblastings, cleans after processing with acetone again.
(3) epoxypaint allotment
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring.
(4) brushwork epoxy resin coating
Deployed epoxypaint is evenly brushed Q235 steel matrix surface after the pre-treatment, coat-thickness controls at 100 μm.
(5) SiO is sprayed outward 2powder
By SiO 2powder sprays the epoxy coating surface in just brushing uniformly by electrostatic gun, wherein SiO 2amount be 20% of epoxypaint quality.Electrostatic painting process parameter: compressed air pressure 0.6MPa, electrostatic spraying voltage 50V, spray tip is to workpiece distance 120mm.
(6) sedimentation solidification
The sample of preparation is incubated 30min under 70 DEG C of conditions, SiO 2after particles settling to certain depth, coating is solidified completely.
Embodiment 3
Material selec-tion is: bi-component epoxide-resin (E44 epoxy resin, low molecular polyamides solidifying agent), silicon powder size composition is 5 ~ 10 μm: 35%, 10 ~ 20 μm: 30%, 20 ~ 30 μm: 20%, 30 ~ 40 μm: 10%, 40 ~ 50 μm: 5%.
(1) mixed powder
Take the SiO of different size according to the above ratio 2powder is put into ball mill and is added alcohol and carry out ball milling, alcohol and powder quality than being 1:10, mixed powder 2 hours, powder is mixed, again the above-mentioned powder mixed is put into drying baker and carry out drying, temperature 150 DEG C insulation 2 hours, removing moisture also increases the mobility of powder.
(2) pre-treatment is sprayed
Matrix adopts Q235 steel, and specimen size is 4mm × 4mm × 4mm, with 18 order emergy sandblastings, cleans after processing with acetone again.
(3) epoxypaint allotment
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring.
(4) brushwork epoxy resin coating
Deployed epoxypaint is evenly brushed Q235 steel matrix surface after the pre-treatment, coat-thickness controls at 150 μm.
(5) SiO is sprayed outward 2powder
By SiO 2powder sprays the epoxy coating surface in just brushing uniformly by electrostatic gun, wherein SiO 2amount be 45% of epoxypaint quality.Electrostatic painting process parameter: compressed air pressure 0.4MPa, electrostatic spraying voltage 55V, spray tip is to workpiece distance 150mm.
(6) sedimentation solidification
The sample of preparation is incubated 90min under 50 DEG C of conditions, SiO 2after particles settling to certain depth, coating is solidified completely.
In order to investigate SiO of the present invention 2/ epoxy resin-matrix gradient wear-resistant coating and the standby SiO of blended legal system 2the difference of/epoxy resin-matrix wear-resistant coating, the coating standby with blended legal system to the coating of the present invention obtained by embodiment 1 and the bonding strength of pure epoxy resin coating three kinds of coatings, hardness, wear resistance and erosion resistance are tested and compare, and observe gradient cladding section structure.
According to " GB/T 9286-1998, the cross cut test of paint and varnish paint film " adopt the bonding strength of drawing lattice laboratory method testing coating, find that the bonding strength of the bonding strength of coating of the present invention and pure epoxy resin coating is suitable, be all 0 grade, it is 1 grade that blending method prepares anchoring strength of coating; Adopt Tukon 2100B type micro-/Vickers hardness tester measures coatingsurface hardness, find that the hardness of coating of the present invention is 56HV, the hardness that blending method prepares coating is 23HV, and pure epoxy resin coating hardness is 11HV, is 2.5 times and 5 times respectively; Abrasive material selects particle diameter to be 20-30 object quartz sand, and erosion air pressure is chosen to be 0.4MPa, and erosion distance is 200mm, and the angle of attack 90 °, the erosion time, 90s carried out erosion experiment, found that this coating abrasion rate is only 0.518 × 10 -4gcm -2s -1, compound coating wear rate prepared by blending method is 0.973 × 10 -4gcm -2s -1, be 1/2 of coating abrasion speed prepared by blending method; With JSM-6700F type scanning electron microscopic observation coatingsurface erosive wear pattern, find that coating erosion surface particles strengthening effect prepared by the present invention is obvious.Salt air corrosion 200h under NaCl solution 50 DEG C of conditions of employing 3.5%, result shows that three kinds of coating corrosion resistance can not have notable difference, is 0.07mm/a.Utilize compound coating section structure prepared by opticmicroscope paired observation gradient composite coating of the present invention and blending method, as depicted in figs. 1 and 2, can find that its granularity through-thickness is continuous gradient change, coating and matrix bonding surface place are still pure epoxy resin, in conjunction with tight; And SiO in compound coating prepared by blending method 2particle there occurs obvious sedimentation, and wild phase mainly concentrates on coatings and substrate interface, contributes little, weaken the bonding strength at coating and interface to coatingsurface hardness and wear resistance.

Claims (7)

1.SiO 2/ epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, comprises epoxy resin-base and SiO 2strengthening phase, wherein epoxy resin-base is bi-component epoxide-resin, SiO 2add that quality is epoxy resin-matrix weight 20% ~ 45% of strengthening phase.
2. SiO according to claim 1 2/ epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, described bi-component epoxide-resin is made up of E44 epoxy resin and low molecular polyamides solidifying agent.
3. SiO according to claim 1 and 2 2/ epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, described SiO 2strengthening phase is by mass percentage by following varigrained SiO 2composition: 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, 40 ~ 50 μm of <5%, the mass percent sum of above each granularity is 100%.
4.SiO 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, specifically carries out according to the following steps:
Step 1, carries out SiO in proportion 2mixed powder
Taking granularity by mass percentage is respectively 5 ~ 10 μm: 35% ~ 65%, 10 ~ 20 μm: 20% ~ 30%, 20 ~ 30 μm: 10% ~ 20%, 30 ~ 40 μm: 5% ~ 10%, the SiO of 40 ~ 50 μm of <5% 2powder is put into ball mill and is added alcohol and carry out ball milling, powder is mixed, then puts into drying baker and carry out drying;
Step 2, epoxypaint is allocated
By E-44 epoxy resin and low molecular polyamides solidifying agent with mass ratio 1:1 mixing and stirring;
Step 3, carries out spraying pre-treatment, brushwork epoxy resin coating
Clean with acetone after sandblasting roughening treatment is carried out to matrix surface; By epoxypaint brushing matrix surface after the pre-treatment deployed for step 2, coat-thickness controls at 100 ~ 200 μm;
Step 4, outer spray SiO 2mixed powder
By SiO 2mixed powder sprays the epoxy coating surface of brushing in step 3 uniformly by electrostatic spraying, wherein SiO 2amount be 20% ~ 45% of epoxypaint quality;
Step 5, sedimentation is solidified
Coating preparation 5 obtained is incubated 30 ~ 120min under 25 ~ 70 DEG C of conditions, namely obtains SiO 2/ epoxy resin-matrix graded composite wear-resistant coating.
5. SiO according to claim 4 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, in step 1, drying is incubated 2 ~ 4 hours at temperature 110 DEG C ~ 150 DEG C.
6. SiO according to claim 4 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, is characterized in that, sandblasting roughening treatment processing parameter in step 3: blasting pressure 0.4 ~ 0.6MPa, abrasive material 16 ~ 18 order silicon carbide.
7. SiO according to claim 4 2the preparation method of/epoxy resin-matrix graded composite wear-resistant coating, it is characterized in that, in step 4, electrostatic spraying adopts electrostatic gun to carry out, and design parameter is: compressed air pressure 0.4 ~ 0.7MPa, electrostatic spraying voltage 50 ~ 60V, spray tip is to workpiece distance 100 ~ 150mm.
CN201510036343.8A 2015-01-23 2015-01-23 SiO2/ epoxy resin-matrix graded composite wear-resistant coating and preparation method thereof Expired - Fee Related CN104761995B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108976877A (en) * 2018-07-11 2018-12-11 西安理工大学 A kind of gradient conductive coating and preparation method thereof
CN116179050A (en) * 2023-02-28 2023-05-30 东南大学 Anti-skid repair coating for ship deck and application structure thereof
CN116441142A (en) * 2022-07-12 2023-07-18 西安交通大学 Construction method of photocuring surface layer functionally gradient coating and solid insulating part thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1766020A (en) * 2005-11-30 2006-05-03 深圳清华大学研究院 Antibiotic mildew-resistant algae-resistant anticorrosion paint and its uses
CN101659828A (en) * 2008-08-25 2010-03-03 武汉菲凡士建材有限公司 High abrasion-resistant environmental protection floor coating and production and construction process thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1766020A (en) * 2005-11-30 2006-05-03 深圳清华大学研究院 Antibiotic mildew-resistant algae-resistant anticorrosion paint and its uses
CN101659828A (en) * 2008-08-25 2010-03-03 武汉菲凡士建材有限公司 High abrasion-resistant environmental protection floor coating and production and construction process thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108976877A (en) * 2018-07-11 2018-12-11 西安理工大学 A kind of gradient conductive coating and preparation method thereof
CN116441142A (en) * 2022-07-12 2023-07-18 西安交通大学 Construction method of photocuring surface layer functionally gradient coating and solid insulating part thereof
CN116441142B (en) * 2022-07-12 2023-11-21 西安交通大学 Construction method of photocuring surface layer functionally gradient coating and solid insulating part thereof
CN116179050A (en) * 2023-02-28 2023-05-30 东南大学 Anti-skid repair coating for ship deck and application structure thereof

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