CN106752224A - A kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method - Google Patents
A kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method Download PDFInfo
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- CN106752224A CN106752224A CN201611011680.2A CN201611011680A CN106752224A CN 106752224 A CN106752224 A CN 106752224A CN 201611011680 A CN201611011680 A CN 201611011680A CN 106752224 A CN106752224 A CN 106752224A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a kind of turbine blade modified epoxy anticorrosion abrasionproof etching method, it includes：(1) sandblasting roughening is carried out in blade surface；(2) roughening blade surface is cleaned with acetone and ethanol and is dried；(3) according to the 10wt% of hard graphene fiber 2 and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, it is made slurry and is well mixed；(4) by the slurry uniform application in blade surface, the terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating that cladding is adulterated in the graphene fiber of blade surface is obtained；(5) according to hard WC ceramic particles, Si3N4The proportioning of nano particle, hdpe fiber and terminal hydroxy liquid rubber modified epoxy resin, is made slurry and is well mixed；(6) the terminal hydroxy liquid rubber modified epoxy resin wear resistant corrosion resistant coating surface that the slurry uniform application adulterates in graphene fiber, obtains multicoat corrosion-resistant coating.Tried out 1 month through in waste stream, do not find obvious abrasion and evidence of corrosion.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of turbine blade modified epoxy multicoat anticorrosion
Abrasionproof etching method.
Background technology
Abrasion wear phenomena all generally existing in many industries such as water conservancy, water power, machinery, weaving and metallurgy, and it is non-
Chang Yanchong, the economic loss for thereby resulting in can quite show.China is very huge in the spending of this aspect, especially water conservancy, water power
Department is more prominent.Because China's silt content of river is big, river of the complete excessively annual fortune sedimentary loading more than 10,000,000 tons is up to 115
Bar, according to first place in the world.Relevant statistics in 2001 shows Ml, and national power station total installation of generating capacity is 80.05GW, gross generation
It is 2184.5 hundred million kW/h, wherein 105,600,000,000 kW h are located at the big areas of silt content of river such as northwest, southwest and North China, these areas
Component of Hydraulic Turbines not only washed away by high-velocity flow, denuded and mechanical force is acted on, but also by being mingled with current
The abrasion of the media such as silt, ablation destruction, therefore the consume of material is very serious.In addition, in Central-South, East China power station,
Although Component of Hydraulic Turbines is because silt content of river is few, and lost by sand erosion small, the cavitation of current is at deep water to water
The destruction of engine blade wheel material is then quite serious.Data shows that a large-scale power station is used to change, repair every year according to the relevent statistics
The expense of water conservancy machinery up to more than million yuan, therefore, solve hydraulic abrasion, erosion problem, it is very necessary.
A kind of most economical, most efficient method is exactly the coating high abrasion anti-corrosion painting high on the blade and arbor of the hydraulic turbine
Layer, and wear resistant corrosion resistant metal coating is because its coating processes is simple, economic and effect is obvious, it is deep to be favored by people.
The content of the invention
It is an object of the invention to propose a kind of turbine blade modified epoxy coating antiseptic erosion abrasionproof etching method, energy
Enough make turbine blade anti scuffing and anticorrosive.
, there is coating hardness in traditional coating material, including metal coating layer material and toughness is difficult to the contradiction taken into account, improve
The hardness of coating is often cost to sacrifice its toughness, causes coating to decline with skin and associativity with matrix.When by big
When particle impacting, abrasion, coating is easy to crack, hard phase is easy to fall off.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method, it includes：
(1) sandblasting roughening is carried out in blade surface；
(2) roughening blade surface is cleaned with acetone and ethanol and is dried；
(3) according to hard graphene fiber 2-10wt% and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus,
It is made slurry and is well mixed；
(4) by the slurry uniform application in blade surface, dried at 90-130 DEG C, obtain cladding in the stone of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of black alkene fiber doping；
(5) 20-65wt%, Si are accounted for according to hard WC ceramic particles3N4Nano particle 5-15wt%, high density polyethylene (HDPE) are fine
The proportioning of dimension 2-10wt% and terminal hydroxy liquid rubber modified epoxy resin surplus, is made slurry and is well mixed；
(6) it is the slurry uniform application is wear-resisting in the terminal hydroxy liquid rubber modified epoxy resin that graphene fiber adulterates
Corrosion-resistant finishes surface, dries at 90-130 DEG C, obtains the terminal hydroxy liquid that cladding is adulterated in the graphene fiber of blade surface
Rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating/WC-Si3N4The terminal hydroxy liquid rubber of-hdpe fiber doping changes
The multicoat corrosion-resistant coating of property epoxy resin abrasion-proof corrosion-proof erosion resisting coating.
The present invention contains abrasion hardness WC high using the different sandwich construction of modified epoxy forming component, its outer layer
Ceramic particle, Si3N4Nano particle and hdpe fiber, play wear resistant corrosion resistant effect, and internal layer uses doped graphene
The modified epoxy layer of fiber, improves the adhesion strength with matrix, difficult for drop-off and corrosion resistance and good, it is achieved thereby that resistance to
The wear-resisting balance of corrosion.
Meanwhile, the multicoat anticorrosion wear-resisting coating that the present invention is used, the WC-Si of use3N4Positioned at the most appearance of coating
Face, compared to blending structure, it can be cost-effective.
Preferably, each coating layer thickness of the invention is between 0.2-2mm.
The present invention improves both compatibilities, and shape using the liquid rubber modified epoxy resin containing terminal functionality
Into inierpeneirating network structure or half interpenetrating network structure, because terminal functionality liquid rubber contains butadiene long-chain, itself tool
There is a preferable pliability, therefore the modified epoxy that uses of the present invention has toughness, therefore its nonmetallic painting for preparing
Layer good toughness, hardness is high, overcomes the defect that conventional coatings hardness can not be taken into account with toughness.
The preparation method of terminal hydroxy liquid rubber modified epoxy resin of the present invention is the state of the art, this
Art personnel can be selected in the range of prior art.Typical but non-limiting example is as follows：
First by terminal hydroxyl polybutadiene liquid rubber or end hydroxy butadiene/acrylonitrile liquid rubber and polyisocyanates
Polyisocyanates terminated polybutadiene liquid rubber prepolymer is produced in reaction or polyisocyanates polybutadiene/acrylonitrile liquid rubber is pre-
Polymers, then reacts the prepolymer and epoxy resin, prepares terminal hydroxy liquid rubber modified epoxy resin.
The terminal hydroxy liquid rubber modified epoxy resin that the present invention is used, it introduces terminal hydroxyl polybutadiene liquid rubber
In the cross-linked network of epoxy resin, play toughening effect, due between terminal hydroxy liquid rubber and various modified components with chemistry
Bond is closed, and can not only retain the high-adhesion energy between epoxy resin and metal, and again high flexible with liquid rubber
Property, thus obtained terminal hydroxy liquid rubber modified epoxy resin possesses the unification of pliability and hardness.
Preferably, in modified epoxy of the present invention, doped with additives such as curing agent.
Preferably, epoxy resin of the present invention, its structural formula is：
In formula, G is epoxide group, and R is H or alkyl, and n is the integer of 2-4.
The present invention is blended in the modified epoxy using WC as wear-resistant noncorroding metal ion.Tungsten carbide is one
Plant the compound being made up of tungsten and carbon.It is black hexagonal, there is metallic luster, hardness is close with diamond, is electric, heat good
Good conductor.
Preferably, WC ceramic particles account for 30-40wt%, further preferred 35wt%.
The multicoat wear-resistant coating that the present invention is prepared, it is tightly combined with matrix, and bond strength is more than 800MPa, makes
Extend more than 6-7 times compared to the blade without coating with the life-span, anti-cavitation ability improves more than 10 times.
The WC-Si that the present invention is prepared3N4The terminal hydroxy liquid rubber modified epoxy of-hdpe fiber doping
Resin abrasion-proof corrosion-proof erosion resisting coating, its advantage for possessing ceramic coating the characteristics of but also with organic matter good film flexibility, not only resists
Abrasion, anticorrosive, pliability is not bad.Tried out 1 month through in waste stream, do not find obvious abrasion and evidence of corrosion.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of turbine blade anticorrosion abrasionproof etching method, it includes：
(1) sandblasting roughening is carried out in blade surface；
(2) roughening blade surface is cleaned with acetone and ethanol and is dried；
(3) according to hard graphene fiber 2wt% and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, it is made
Slurry is simultaneously well mixed；
(4) by the slurry uniform application in blade surface, dried at 90 DEG C, obtain cladding in the Graphene of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of fiber doping；
(5) 20wt%, Si are accounted for according to hard WC ceramic particles3N4Nano particle 15wt%, hdpe fiber
The proportioning of 2wt% and terminal hydroxy liquid rubber modified epoxy resin surplus, is made slurry and is well mixed；
(6) it is the slurry uniform application is wear-resisting in the terminal hydroxy liquid rubber modified epoxy resin that graphene fiber adulterates
Corrosion-resistant finishes surface, dries at 90 DEG C, obtains the terminal hydroxy group liquid that cladding is adulterated in the hdpe fiber of blade surface
Body rubber modified epoxy abrasion-proof corrosion-proof erosion resisting coating/WC-Si3N4The terminal hydroxy liquid rubber of-hdpe fiber doping
The multicoat corrosion-resistant coating of modified epoxy abrasion-proof corrosion-proof erosion resisting coating.
Embodiment 2
A kind of turbine blade anticorrosion abrasionproof etching method, it includes：
(1) sandblasting roughening is carried out in blade surface；
(2) roughening blade surface is cleaned with acetone and ethanol and is dried；
(3) according to hard graphene fiber 10wt% and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, system
Into slurry and it is well mixed；
(4) by the slurry uniform application in blade surface, dried at 130 DEG C, obtain cladding in the graphite of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of alkene fiber doping；
(5) 65wt%, Si are accounted for according to hard WC ceramic particles3N4Nano particle 5wt%, hdpe fiber
The proportioning of 10wt% and terminal hydroxy liquid rubber modified epoxy resin surplus, is made slurry and is well mixed；
(6) it is the slurry uniform application is wear-resisting in the terminal hydroxy liquid rubber modified epoxy resin that graphene fiber adulterates
Corrosion-resistant finishes surface, dries at 130 DEG C, obtains the terminal hydroxy liquid rubber that cladding is adulterated in the graphene fiber of blade surface
Modified epoxy abrasion-proof corrosion-proof erosion resisting coating/WC-Si3N4The terminal hydroxy liquid modified rubber ring of-hdpe fiber doping
The multicoat corrosion-resistant coating of oxygen tree fat abrasion-proof corrosion-proof erosion resisting coating.
Embodiment 3
A kind of turbine blade anticorrosion abrasionproof etching method, it includes：
(1) sandblasting roughening is carried out in blade surface；
(2) roughening blade surface is cleaned with acetone and ethanol and is dried；
(3) according to hard graphene fiber 5wt% and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, it is made
Slurry is simultaneously well mixed；
(4) by the slurry uniform application in blade surface, dried at 100 DEG C, obtain cladding in the graphite of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of alkene fiber doping；
(5) 50wt%, Si are accounted for according to hard WC ceramic particles3N4Nano particle 10wt%, hdpe fiber
The proportioning of 5wt% and terminal hydroxy liquid rubber modified epoxy resin surplus, is made slurry and is well mixed；
(6) it is the slurry uniform application is wear-resisting in the terminal hydroxy liquid rubber modified epoxy resin that graphene fiber adulterates
Corrosion-resistant finishes surface, dries at 100 DEG C, obtains the terminal hydroxy liquid rubber that cladding is adulterated in the graphene fiber of blade surface
Modified epoxy abrasion-proof corrosion-proof erosion resisting coating/WC-Si3N4The terminal hydroxy liquid modified rubber ring of-hdpe fiber doping
The multicoat corrosion-resistant coating of oxygen tree fat abrasion-proof corrosion-proof erosion resisting coating.
The turbine blade that embodiment 1-3 is prepared, tries out 1 month through in waste stream, does not find obvious mill
Erosion and evidence of corrosion.
Claims (3)
1. a kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method, it includes：
(1) sandblasting roughening is carried out in blade surface；
(2) roughening blade surface is cleaned with acetone and ethanol and is dried；
(3) according to hard graphene fiber 2-10wt% and the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, it is made
Slurry is simultaneously well mixed；
(4) by the slurry uniform application in blade surface, dried at 90-130 DEG C, obtain cladding in the Graphene of blade surface
The terminal hydroxy liquid rubber modified epoxy resin abrasion-proof corrosion-proof erosion resisting coating of fiber doping；
(5) 20-65wt%, Si are accounted for according to hard WC ceramic particles3N4Nano particle 5-15wt%, graphene fiber 2-10wt%
With the proportioning of terminal hydroxy liquid rubber modified epoxy resin surplus, it is made slurry and is well mixed；
(6) it is the slurry uniform application is resistance in the terminal hydroxy liquid rubber modified epoxy resin that hdpe fiber adulterates
Mill corrosion-resistant finishes surface, dries at 90-130 DEG C, obtains the terminal hydroxy group liquid that cladding is adulterated in the graphene fiber of blade surface
Body rubber modified epoxy abrasion-proof corrosion-proof erosion resisting coating/WC-Si3N4The terminal hydroxy liquid rubber of-hdpe fiber doping
The multicoat corrosion-resistant coating of modified epoxy abrasion-proof corrosion-proof erosion resisting coating.
2. turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method as claimed in claim 1, its feature exists
In the preparation method of described terminal hydroxy liquid rubber modified epoxy resin is as follows：
First terminal hydroxyl polybutadiene liquid rubber or end hydroxy butadiene/acrylonitrile liquid rubber are reacted with polyisocyanates
Produce polyisocyanates terminated polybutadiene liquid rubber prepolymer or polyisocyanates polybutadiene/acrylonitrile liquid rubber pre-polymerization
Thing, then reacts the prepolymer and epoxy resin, prepares terminal hydroxy liquid rubber modified epoxy resin.
3. turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method as claimed in claim 1 or 2, its feature
It is that WC ceramic particles account for 30-40wt%, further preferred 35wt%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011680.2A CN106752224A (en) | 2016-11-17 | 2016-11-17 | A kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611011680.2A CN106752224A (en) | 2016-11-17 | 2016-11-17 | A kind of turbine blade modified epoxy multicoat anticorrosion abrasionproof etching method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123779A (en) * | 2002-09-30 | 2004-04-22 | Dainippon Ink & Chem Inc | Epoxy resin composition and epoxy resin emulsion |
| CN1978493A (en) * | 2005-12-05 | 2007-06-13 | 中国石油天然气集团公司 | Method for synthesizing liquid rubber-epoxy resin polymer |
| CN103639101A (en) * | 2013-11-15 | 2014-03-19 | 西安航空动力股份有限公司 | Method for coating abradable coating of composite containing ring of aircraft engine |
-
2016
- 2016-11-17 CN CN201611011680.2A patent/CN106752224A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123779A (en) * | 2002-09-30 | 2004-04-22 | Dainippon Ink & Chem Inc | Epoxy resin composition and epoxy resin emulsion |
| CN1978493A (en) * | 2005-12-05 | 2007-06-13 | 中国石油天然气集团公司 | Method for synthesizing liquid rubber-epoxy resin polymer |
| CN103639101A (en) * | 2013-11-15 | 2014-03-19 | 西安航空动力股份有限公司 | Method for coating abradable coating of composite containing ring of aircraft engine |
Non-Patent Citations (4)
| Title |
|---|
| 中国塑料加工工业协会: "《中国塑料工业年鉴》", 31 December 2013, 中国石化出版社 * |
| 周大纲等: "《土工合成材料制造技术及性能》", 31 March 2001, 中国轻工业出版社 * |
| 李青年: "《薄膜制品涉及生产加工新工艺与应用新技术实务全书》", 30 April 2004 * |
| 胡少坤等: "端羟基液体丁腈橡胶改性环氧树脂的结构与性能", 《加工应用》 * |
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Application publication date: 20170531 |