CN109796846A - A kind of high conductivity based on conducing composite material can weld shop primer and preparation method thereof - Google Patents
A kind of high conductivity based on conducing composite material can weld shop primer and preparation method thereof Download PDFInfo
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- CN109796846A CN109796846A CN201910059171.4A CN201910059171A CN109796846A CN 109796846 A CN109796846 A CN 109796846A CN 201910059171 A CN201910059171 A CN 201910059171A CN 109796846 A CN109796846 A CN 109796846A
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Abstract
The present invention relates to paint fields, there is provided a kind of high conductivity based on conducing composite material can weld shop primer and preparation method thereof, the shop primer product for solving the prior art cannot achieve electric resistance welding when not removing shop primer coating, the problem of function of Plasma Welding, it is made of component one and component two, the component one includes each raw material of following parts by weight: 2~10 parts of epoxy resin, 10~15 parts of solvent, 0.1~1 part of dispersing agent, 50~90 parts of metallic conduction powder, 0.01~1 part of radio frequency powder, 1~3 part of auxiliary rheological agents, 0.1~1 part of defoaming agent, 0.5~1 part of adhesion promoter；The component two is made of the polyamine curing agent of 30~80 parts by weight and the solvent of 20~70 parts by weight.
Description
Technical field
The present invention relates to paint fields more particularly to a kind of high conductivity based on conducing composite material can weld pre- linging
Paint and preparation method thereof.
Background technique
Engineering truck, mechanical equipment, ship, carbon steel passenger train and lorry etc. using a large amount of iron and steel material shaped and plate come
Processing and manufacturing.If the material corroded progress welding fabrication is surface-treated again, difficulty increases, especially structure
The complicated, region of narrow space and sheet member etc., if thin plate injection is easily deformed, small space and labyrinth corner rust
The problems such as erosion region can not effectively derust is very significant, and therefore, technical process is usually to spray to required steel material
Processing is penetrated except descale and pollutant, coats interim protection priming paint or shop primer；Then to iron and steel material shaped and plate by wanting
It asks and is cut and welded；Weld seam and damage field are cleared up after welding fabrication, post-coatings system is finally coated and is decorated
And anti-corrosion protection.The purpose of coating shop primer is: preventing these steel materials in storage and transportation, the process such as cutting, welding
Corrosion causes material property to decline；The area and difficulty for substantially reducing equipment molding sequent surface processing, improve subsequent painting
Layer system Corrosion Protection improves equipment service life and operational safety.
Current each equipment manufacture industry is made frequently with epoxy dust primer, inorganic zinc silicate primer, epoxy anti-corrosive primer etc.
For shop primer, coating thickness is no more than 25 microns, realized by shallow layer processing, in storage and transport process steel anti-corrosion, ring
Oxygen zinc powder shop primer, to realize that shallow layer anti-corrosion can be in specific thickness containing a large amount of zinc powder (accounting for dry film 60~80%)
Gas shielded welding is carried out in range, but cannot achieve electric resistance welding and Plasma Welding, product zinc mist in welding and cutting
Flue dust is big, is easy to be burnt, and coating thickness welding quality influences big；The advantages of inorganic zinc silicate shop primer is anticorrosive property
Can it is good, zinc fog dust dirt is also smaller, but still can not achieve electric resistance welding and Plasma Welding, at the same to condition of cure and substrate at
The requirement of reason is high, and the undesirable substrate of spray treatment, dry environment etc. can not form good film and adhesive force.Not zincilate
Epoxy antirust shop primer welding when fully erased must could obtain higher welding quality.These coating products can not
Meet the welding manners such as a variety of welding manners, such as electric resistance welding, Plasma Welding, gas shielded welding, is needed before being welded
These shop primers are carried out with whole removings or part removes and is just able to achieve welding, secondary removing needs to consume a large amount of manpower objects
Power reduces processing efficiency, causes significant wastage.So far, shop primer coating is not still removed in the market and reality
The shop primer product of existing electric resistance welding, Plasma Welding, can not also meet a variety of welding manners simultaneously.Exempt to remove coating, it can be real
The solderable shop primer of existing electric resistance welding and Plasma Welding has no relation technological researching and using document report.
Summary of the invention
Therefore, for the above content, the present invention provides a kind of solderable precoating of the high conductivity based on conducing composite material
Priming paint and preparation method thereof, the shop primer product for solving the prior art cannot achieve resistance when not removing shop primer coating
Weldering, Plasma Welding function the problem of.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions: a kind of based on conducing composite material
High conductivity can weld shop primer, be made of component one and component two, and the component one includes each raw material of following parts by weight:
2~10 parts of epoxy resin, 10~15 parts of solvent, 0.1~1 part of dispersing agent, 50~90 parts of metallic conduction powder, radio frequency powder
Last 0.01~1 part, 1~3 part of auxiliary rheological agents, 0.1~1 part of defoaming agent, 0.5~1 part of adhesion promoter；The component two is by 30
The polyamine curing agent of~80 parts by weight and the solvent of 20~70 parts by weight composition.
A further improvement is that: the epoxy resin is bisphenol A epoxide resin, o-cresol epoxy resin, epoxy novolac tree
In rouge, bisphenol f type epoxy resin any one or it is two or more with the mixed mixture of any ratio, epoxide equivalent is 200~
500g/Eq。
A further improvement is that: the metallic conduction powder is iron powder, in nickel powder, powder of stainless steel, zinc powder, zinc flake
At least two or more mixture, the fineness of powder is 100 mesh~2000 mesh, and wherein the content of zinc powder is no more than metallic conduction
The 30wt% of powder total amount.
A further improvement is that: the non-metal powder is conductive black, in graphene, electrically conductive graphite, carbon nanotube
Any one, for improving the electric conductivity of film-forming resin.
A further improvement is that: the adhesion promoter is in epoxy radicals silicone hydride, amino silane or vinyl silanes
Any one, silane hydrolyzate generates silicone hydroxyl, silicone hydroxyl and the micro reaction of moisture shape of metallic substrate surface in film forming procedure
At covalent bond, organic segment participates in resin cross-linking reaction, improves coating and obtains adhesive force and Corrosion Protection.
A further improvement is that: the auxiliary rheological agents are fumed silica, in organobentonite, modified polyurethane urea
Any one is two or more with the mixed composition of any ratio, for preventing sagging when filler precipitating and construction.
A further improvement is that: the polyamine curing agent be polyamide, aromatic amine or ring grease amine in any one or
It is two or more with the mixed mixture of any ratio, active hydrogen equivalent weight is 80~500.
A kind of high conductivity based on conducing composite material can weld the preparation method of shop primer, including component one and group
Divide two preparation step, the preparation step of the component one are as follows: (1) prepare material: asphalt mixtures modified by epoxy resin by the mass percent of each formula
2~10 parts of rouge, 10~15 parts of solvent, 0.1~1 part of dispersing agent, 50~90 parts of metallic conduction powder, radio frequency powder 0.01
~1 part, 1~3 part of auxiliary rheological agents, 0.1~1 part of defoaming agent, 0.5~1 part of adhesion promoter；(2) in order by epoxy resin,
Solvent, dispersing agent, auxiliary rheological agents are added in a mixing bowl, after mixing evenly, metal conductive powder are slowly uniformly added under stirring
End, radio frequency powder, then high speed dispersion is uniform；(3) it is uniform that adhesion promoter mixed on low speed is added；(4) to product
It is detected, filtering, packaging after detection is qualified, filter screen mesh number is 120 mesh；The preparation step of the component two are as follows: (1) press
The mass percent being respectively formulated prepares material: 30~80 parts by weight of polyamine curing agent, 20~70 parts by weight of solvent；(2) by suitable
Polyamine curing agent, solvent are added in a mixing bowl sequence, stir evenly.
A further improvement is that: further include the steps that for component one and component two being uniformly mixed and is prepared into film.
A further improvement is that: the film with a thickness of 5~25um.Film is coated in steel surface, steel surface
Resistance≤1000 Ω.Film is able to carry out electric resistance welding, ion welding and gas shielded welding when not removing on steel substrate.
By using preceding solution, the beneficial effects of the present invention are: the height of the invention based on conducing composite material
Electric conductivity can weld shop primer, and metal powder or non-metal powder containing high conductivity in coating are made using epoxy resin
For film forming matter, which realizes resistance welding by the way that film electric resistance is greatly lowered, while the conductive material welding compounded
It can satisfy welding performance after high-temperature fusion, do not influence structure and weld strength after welding.Thin coating film meets anticorrosion need
It asks, it can be compatible with subsequent a variety of erosion shields.With exempting to remove coating welding, when welding low flue dust, the features such as Hearth Furnace,
Product is mainly used for the precoating protection of iron and steel material shaped, plate etc., meets advanced cutting and welding procedure.
The present invention is to use epoxy resin for film forming matter to the main contributions of welding technique, metal powder, non-metallic material
Expect that the composite material rationally compounded is welding a part that metallic matrix base material can be formed when fusion, welding quality influence
Small, Metallographic Analysis result and shear strength meet welding technique requirement, and high conductivity can weld shop primer and can not remove
A variety of welding manners such as electric resistance welding is realized in the case where coating, while also meeting Plasma Welding and gas shielded welding.
The present invention is to exempt to remove coating realization welding to the contribution of precoating anti-corrosive primer technological progress, is avoided because removing
Into secondary operation welding process, substrate corrodes after coating, improves the protection efficiency of shop primer.It is not removed before welding
Pre- coating layer can be greatly reduced secondary surface treatment bring point danger and save cost of labor, improve processing and manufacturing efficiency.With
For 2mm thickness plate, after welding fabrication can not spray treatment, injection will cause deformation, cause to equip unqualified or scrap,
If welded again after removing coating when resistance welding, the expense for clearing up every square of the expense of coating is about 20~40 yuan/m2,
And consume 0.2~1 hour/m of work2, cause manpower and material resources huge waste, from the point of view of above-mentioned data with the existing precoating of existing market
Priming paint compares, and shop primer of the invention can save lot of materials and labour cost, has significant social benefit and economic effect
Benefit
The present invention can weld pre- linging by a variety of high-conductive metal material powders and conductive nonmetal material compounding preparation
Paint is tested by a large amount of soldering test and welding performance, it was demonstrated that reasonable conductive material compounding and Design of Coatings Formulation ability
Guarantee to realize good welds performance in the case where not removing shop primer coating, while being suitble to a variety of welding manners.
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to specific embodiment, how skill is applied to the present invention whereby
Art means solve technical problem, and the realization process for reaching technical effect can fully understand and implement.
Unless otherwise specified, the conventional hand that technological means employed in embodiment is well known to those skilled in the art
Section, used reagent and product are also available commercial.The source of agents useful for same, trade name and it is necessary to list it
Constituent person is indicated on the first occurrence.
Embodiment one
A kind of solderable shop primer of the high conductivity based on conducing composite material, is made of, institute component one and component two
State each raw material of component one including following parts by weight: 10 parts of 2 parts of bisphenol A epoxide resin, solvent that epoxide equivalent is 200g/Eq,
0.1 part of dispersing agent, 50 parts of the iron powder of 100 mesh of fineness, 200 mesh of fineness 0.01 part of 10 parts of nickel powder, conductive black, graphene 0.01
Part, 1 part of fumed silica, 0.1 part of defoaming agent, 0.5 part of epoxy radicals silicone hydride；The component two by 30 parts by weight polyamide
The solvent composition of (its active hydrogen equivalent weight is 80) and 70 parts by weight.
A kind of high conductivity based on conducing composite material can weld the preparation method of shop primer, including component one and group
Divide two preparation step, the preparation step of the component one are as follows: (1) prepare material by the above-mentioned mass percent being respectively formulated；(2)
Bisphenol A epoxide resin, solvent, dispersing agent, fumed silica are added in a mixing bowl in order, after mixing evenly, stir shape
Iron powder, nickel powder, conductive black, graphene are slowly uniformly added under state, then high speed dispersion is uniform；(3) epoxy radicals silicone hydride is added
Mixed on low speed is uniform；(4) product is detected, filtering, packaging after detection is qualified, filter screen mesh number is 120 mesh；Described group
Divide two preparation step are as follows: (1) by the mass percent preparation material of each formula: 0~80 parts by weight of kymene, solvent 20~
70 parts by weight；(2) polyamide, solvent are added in a mixing bowl in order, are stirred evenly.Then component one and component two are mixed
Uniformly be made film, the film with a thickness of 5um, be coated in steel surface resistance≤1000 Ω.
Embodiment two
A kind of solderable shop primer of the high conductivity based on conducing composite material, it is characterised in that: by component one and group
Divide two compositions, the component one includes each raw material of following parts by weight: epoxide equivalent is the o-cresol epoxy resin 6 of 300g/Eq
Part, 13 parts of solvent, 0.6 part of dispersing agent, 10 parts of the zinc powder that fineness is 500 mesh, 70 parts of the iron powder that fineness is 600 mesh, electrically conductive graphite
0.01,0.05 part of carbon nanotube, 2 parts of organobentonite, 0.5 part of defoaming agent, 0.8 part of amino silane；The component two is by 80 weights
Measure the aromatic amine (active hydrogen equivalent weight 300) of part and the solvent composition of 20 parts by weight.
A kind of high conductivity based on conducing composite material can weld the preparation method of shop primer, including component one and group
Divide two preparation step, the preparation step of the component one are as follows: (1) prepare material by the mass percent of each formula；(2) by suitable
Epoxy resin, solvent, dispersing agent, auxiliary rheological agents are added in a mixing bowl sequence, after mixing evenly, slowly uniformly add under stirring
Enter metallic conduction powder, radio frequency powder, then high speed dispersion is uniform；(3) it is uniform that amino silane mixed on low speed is added；
(4) product is detected, filtering, packaging after detection is qualified, filter screen mesh number is 120 mesh；The preparation of the component two walks
Suddenly are as follows: (1) prepare material: 80 parts by weight of polyamine curing agent, 20 parts by weight of solvent by the mass percent of each formula；(2) it presses
Polyamine curing agent, solvent are added in a mixing bowl sequence, stir evenly, and further include that component one and component two are uniformly mixed system
It is standby at film, the film with a thickness of 5~25um.
Embodiment three
A kind of solderable shop primer of the high conductivity based on conducing composite material, it is characterised in that: by component one and group
Divide two compositions, the component one includes each raw material of following parts by weight: epoxide equivalent is the bisphenol f type epoxy resin of 500g/Eq
10 parts, 15 parts of solvent, 1 part of dispersing agent, 10 parts of the zinc flake that fineness is 300 mesh, 80 parts of the iron powder that fineness is 400 mesh, graphite
Alkene 0.01,0.09 part of electrically conductive graphite, 3 parts of modified polyurethane urea, 1 part of defoaming agent, 1 part of vinyl silanes；The component two is by 50
The ring grease amine (active hydrogen equivalent weight 500) of parts by weight and the solvent composition of 50 parts by weight.
The high conductivity based on conducing composite material can weld the preparation method of shop primer, including component one and group
Divide two preparation step, the preparation step of the component one are as follows: (1) prepare material: asphalt mixtures modified by epoxy resin by the mass percent of each formula
10 parts of rouge, 15 parts of solvent, 1 part of dispersing agent, 90 parts of metallic conduction powder, 1 part of radio frequency powder, 3 parts of auxiliary rheological agents, defoaming
1 part of agent, 1 part of adhesion promoter；(2) epoxy resin, solvent, dispersing agent, auxiliary rheological agents are added in a mixing bowl in order, are stirred
After mixing uniformly, metallic conduction powder, radio frequency powder are slowly uniformly added under stirring, then high speed dispersion is uniform；
(3) it is uniform that adhesion promoter mixed on low speed is added；(4) product is detected, filtering, packaging, filter screen after detection is qualified
Mesh number is 120 mesh；The preparation step of the component two are as follows: (1) prepare material: ring grease amine 50 by the mass percent of each formula
Parts by weight, 50 parts by weight of solvent；(2) polyamine curing agent, solvent are added in a mixing bowl in order, are stirred evenly.Further include
Component one and component two are uniformly mixed and are prepared into film, the film with a thickness of 25um.
Wherein, in the present invention, the raw materials and consumption of the component one and component two can be achieved in following parameter area
The purpose of the present invention, component one: 2~10 parts of epoxy resin, 10~15 parts of solvent, 0.1~1 part of dispersing agent, metallic conduction powder
50~90 parts, 0.01~1 part of radio frequency powder, 1~3 part of auxiliary rheological agents, 0.1~1 part of defoaming agent, adhesion promoter
0.5~1 part；The polyamine curing agent and 20~70 parts by weight of two: 30~80 parts by weight of component.
The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the patents of this creation opinion, and is not limited to those disclosed embodiments.
Claims (10)
1. a kind of high conductivity based on conducing composite material can weld shop primer, it is characterised in that: by component one and component
Two compositions, the component one include each raw material of following parts by weight: 2~10 parts of epoxy resin, 10~15 parts of solvent, dispersing agent
0.1~1 part, 50~90 parts of metallic conduction powder, 0.01~1 part of radio frequency powder, 1~3 part of auxiliary rheological agents, defoaming agent
0.1~1 part, 0.5~1 part of adhesion promoter；The component two is by the polyamine curing agent of 30~80 parts by weight and 20~70
The solvent of parts by weight forms.
2. a kind of high conductivity based on conducing composite material according to claim 1 can weld shop primer, feature
Be: the epoxy resin is bisphenol A epoxide resin, o-cresol epoxy resin, novolac epoxy resin, bisphenol f type epoxy resin
In any one or it is two or more with the mixed mixture of any ratio, epoxide equivalent is 200~500g/Eq.
3. a kind of high conductivity based on conducing composite material according to claim 1 or 2 can weld shop primer, special
Sign is: the metallic conduction powder is iron powder, nickel powder, powder of stainless steel, zinc powder, at least two or more in zinc flake
Mixture, the fineness of powder are 100 mesh~2000 mesh, and wherein the content of zinc powder is no more than metallic conduction powder total amount
30wt%.
4. a kind of high conductivity based on conducing composite material according to claim 1 can weld shop primer, feature
Be: the non-metal powder is conductive black, graphene, electrically conductive graphite, any one in carbon nanotube.
5. a kind of high conductivity based on conducing composite material according to claim 1 can weld shop primer, feature
Be: the adhesion promoter is any one in epoxy radicals silicone hydride, amino silane or vinyl silanes.
6. a kind of high conductivity based on conducing composite material according to claim 1 can weld shop primer, feature
Be: the auxiliary rheological agents be fumed silica, organobentonite, in modified polyurethane urea any one or it is two or more
With the mixed composition of any ratio.
7. a kind of high conductivity based on conducing composite material according to claim 1 can weld shop primer, feature
Be: the polyamine curing agent be in polyamide, aromatic amine or ring grease amine any one or it is two or more with any than mixed
The mixture of conjunction, active hydrogen equivalent weight are 80~500.
8. the preparation method that a kind of high conductivity based on conducing composite material can weld shop primer, it is characterised in that: including
The preparation step of component one and component two, the preparation step of the component one are as follows: (1) prepare object by the mass percent of each formula
Material: 2~10 parts of epoxy resin, 0.1~1 part of dispersing agent, 50~90 parts of metallic conduction powder, nonmetallic is led at 10~15 parts of solvent
0.01~1 part of electro-powder, 1~3 part of auxiliary rheological agents, 0.1~1 part of defoaming agent, 0.5~1 part of adhesion promoter；(2) in order
Epoxy resin, solvent, dispersing agent, auxiliary rheological agents are added in a mixing bowl, after mixing evenly, are slowly uniformly added under stirring
Metallic conduction powder, radio frequency powder, then high speed dispersion is uniform；(3) it is uniform that adhesion promoter mixed on low speed is added；
(4) product is detected, filtering, packaging after detection is qualified, filter screen mesh number is 120 mesh；The preparation of the component two walks
Suddenly are as follows: (1) prepare material: 30~80 parts by weight of polyamine curing agent, 20~70 weight of solvent by the mass percent of each formula
Part；(2) polyamine curing agent, solvent are added in a mixing bowl in order, are stirred evenly.
9. the preparation side that a kind of high conductivity based on conducing composite material according to claim 8 can weld shop primer
Method, it is characterised in that: further include the steps that for component one and component two being uniformly mixed and be prepared into film.
10. the preparation that a kind of high conductivity based on conducing composite material according to claim 9 can weld shop primer
Method, it is characterised in that: the film with a thickness of 5~25um.
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Cited By (5)
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| CN112940604A (en) * | 2021-03-18 | 2021-06-11 | 北京冬曦既驾科技咨询有限公司 | Conductive coating and preparation method thereof |
| CN113337198A (en) * | 2021-06-25 | 2021-09-03 | 上海戎科特种装备有限公司 | Black shading conductive coating and preparation method thereof |
| CN113416463A (en) * | 2021-04-29 | 2021-09-21 | 武汉双虎涂料有限公司 | Water-based epoxy paint and preparation method and application thereof |
| CN114574082A (en) * | 2022-01-26 | 2022-06-03 | 浙江富邦汽车内饰科技有限公司 | Conductive leather for automobile interior decoration and preparation method thereof |
| CN114989709A (en) * | 2022-06-17 | 2022-09-02 | 中车株洲车辆有限公司 | Water-based precoated primer, coating and product with coating |
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Application publication date: 20190524 |