CN106085125A - A kind of high salt fog resistance powdery paints, preparation method and its usage - Google Patents
A kind of high salt fog resistance powdery paints, preparation method and its usage Download PDFInfo
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- CN106085125A CN106085125A CN201610588678.5A CN201610588678A CN106085125A CN 106085125 A CN106085125 A CN 106085125A CN 201610588678 A CN201610588678 A CN 201610588678A CN 106085125 A CN106085125 A CN 106085125A
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- powdery paints
- salt fog
- high salt
- fog resistance
- weight portion
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a kind of high salt fog resistance powdery paints, preparation method and its usage, described high salt fog resistance powdery paints includes the component of following weight portion: epoxy resin: 42 ~ 52 weight portions；Methyl phenolic phenolic resin: 5 ~ 10 weight portions；Auxiliary agent: 10 ~ 20 weight portions；Pigment: 1 ~ 2.5 weight portion；Filler: 24 ~ 31 weight portions.The invention also discloses the preparation method of a kind of high salt fog resistance powdery paints, be by aforementioned component is prepared through mixing, melt, pulverizing by aforementioned weight.High salt fog resistance powdery paints obtained by the present invention is mainly used in cast iron, the aluminum castings such as such as engine cylinder-body；After the high salt fog resistance powdery paints of the present invention uses 240h, coating one side corrosion ＜ 1mm, coating occurs without phenomenons such as foaming, peelings, and the salt spray resistance of coating can be good.
Description
Technical field
The present invention relates to technical field of coatings.More specifically, particularly relate to a kind of high salt fog resistance powdery paints, preparation side
Method and application thereof.
Background technology
Engine cylinder-body is fundamental parts and the skeleton of automobile engine, is again the basis zero during electromotor general assembly simultaneously
Part.The accurate location when effect of engine cylinder-body is to support and ensure the moving component work such as piston, connecting rod, bent axle；Ensure
The ventilation of electromotor, cool down and lubricate；The installation of various aid system, parts and electromotor is provided.Its process characteristic is: knot
Structure, complex-shaped；Plane, groove, hole is more；Wall unevenness is even.
Under conditions of engine cylinder-body is usually operated at high temperature, high load, abrasion acutely, immerse in the oil, work simultaneously
Make humid environment.Engine cylinder-body is typically covered with coating, is generally covered in engine cylinder surface by powdery paints and forms painting
Layer；Described coating uses once spraying, the technique of one-pass film-forming to make, its thickness 80 ~ 150um, and coating has base material bonding
Intensity is big, water absorption rate is little, resistance to elevated temperatures is good, wear-resistant, be coated with the feature that film integrality is good, but shortcoming is salt fog resistance
Can be poor, this engine cylinder-body of coating traditional powder coating in use can use the longevity because salt air corrosion has a strong impact on it
Life.Especially in the most increasing cast aluminium substrate applications under conditions of engine cylinder-body, need more urgently to overcome
This shortcoming.
Therefore, it is necessary to provide a kind of novel powdery paints, can be used for engine cylinder-body, paint coatings pair can ensured
In the adhesive force of base material, resistance to elevated temperatures, wear-resistant, be coated with film integrality on the premise of, improve salt spray resistance.
Summary of the invention
For the defect overcoming above-mentioned prior art to exist, the present invention provides a kind of high salt fog resistance powdery paints, preparation
Method and application thereof, the high salt fog resistance powdery paints coating of the present invention strengthens the salt spray resistance effect to base material, to painting
Layer carries out salt spray resistance test, the highest performance that can reach resistance to 240 hours, it is to avoid cause because base material corrosion resistance is strong
The generation of the bad problem of salt spray resistance of coating.
One aspect of the present invention, it is provided that a kind of high salt fog resistance powdery paints, including the component of following weight portion:
Epoxy resin: 42 ~ 52 weight portions；
Methyl phenolic phenolic resin: 5 ~ 10 weight portions；
Auxiliary agent: 10 ~ 20 weight portions；
Pigment: 1 ~ 2.5 weight portion；
Filler: 24 ~ 31 weight portions.
Preferably, by selecting suitable proportioning raw materials so that described high salt fog resistance powdery paints and the attachment of base material
Power reaches 100/100, and described high salt fog resistance powdery paints is good for the adhesive property of base material, salt fog resistance is good.In the present invention
Each raw material dosage very few, then adhesive force and salt fog resistance can be affected；Consumption is crossed can increase cost at most, and it is resistance to affect it
Salt fog.
Preferably, the epoxide equivalent of described epoxy resin is 700 ~ 800g/eq.Described epoxy resin is selected from Shengli Oil Field side
The epoxy resin E-12 of circle anti-corrosion material company limited, or the GESR904 of HongChang Electronic Materials Co., Ltd, or Langfang promise
The epoxy 014F of your letter Chemical Co., Ltd..
Preferably, the epoxide equivalent of described methyl phenolic phenolic resin is 195 ~ 220g/eq.Described methyl phenolic novolac tree
Fat is selected from the NPCN-704 of South Epoxy Resin (Kunshan) Co., Ltd..
Preferably, at least one during described pigment is titanium dioxide, white carbon black.
Preferably, at least one during described filler is wollastonite, Muscovitum, barium sulfate.Such as, Beijing great achievement that benefits the nation is ultra-fine
The wollastonite of powder body company limited, the sericite of Chuzhou Grea Minerals Co., Ltd., Guizhou Yong Xinjie mining industry company limited
Barium sulfate.
Preferably, described auxiliary agent includes the component of following weight portion:
Levelling agent: 1 ~ 5 weight portion；
Benzoinum: 0.3 ~ 0.5 weight portion；Preferably, the Benzoinum of the present invention is also called 2-hydroxyl-1,2-diphenylethan.
Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；
Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
Preferably, described salt spray resistance auxiliary agent NPAG003 is for prepare voluntarily.
Preferably, described levelling agent is GLP588, GLP599 of Ningbo South-sea Chemical Co., Ltd., and described catalyst is upper
The methylimidazole of sea jade of the He family Chemical Co., Ltd., described desiccant is the oxidation winning wound Degussa (Evonik degussa)
Aluminum C(AEROSIL Alu C), described Benzoinum (2-hydroxyl-1,2-diphenylethan) is Ningbo South-sea Chemical Co., Ltd.
Benzoinum, the concrete consumption in auxiliary agent can be adjusted according to actual needs by those skilled in the art.
Another aspect of the present invention, it is further provided the preparation method of a kind of high salt fog resistance powdery paints, including with
Lower step: by epoxy resin 42 ~ 52 weight portion, methyl phenolic phenolic resin 5 ~ 10 weight portion, auxiliary agent 10 ~ 20 weight portion, pigment 1
~ 2.5 weight portions, filler 24 ~ 31 weight portion, uniformly mix, melt, pulverize；Wherein,
Described melted step is carried out at 95 ~ 105 DEG C；
It is 25 ~ 70 μm that described pulverising step is crushed to particle diameter；
It is ground again after described pulverising step and sieves, thus preparing described high salt fog resistance powdery paints.
Preferably, described auxiliary agent includes the component of following weight portion:
Levelling agent: 1 ~ 5 weight portion；
Benzoinum: 0.3 ~ 0.5 weight portion；Preferably, the Benzoinum of the present invention is also called 2-hydroxyl-1,2-diphenylethan.
Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；
Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
Preferably, described levelling agent is GLP588, GLP599 of Ningbo South-sea Chemical Co., Ltd., can be used alone
GLP588 or GLP589, it is possible to use the mixture of GLP588 and GLP589.Described catalyst is that Shanghai jade of the He family chemical industry has
The methylimidazole of limit company, described desiccant is the aluminium oxide C(AEROSIL winning wound Degussa (Evonik degussa)
Alu C), described Benzoinum (2-hydroxyl-1,2-diphenylethan) is the Benzoinum of Ningbo South-sea Chemical Co., Ltd., described in help
Concrete consumption in agent can be adjusted according to actual needs by those skilled in the art.
Preferably, invention further provides the preparation process of described salt spray resistance auxiliary agent, including: aluminium triphosphate, tree
Fat, filler are according to aluminium triphosphate: resin: the ratio mixing of filler=1:1:1, uniformly melt at 95 ~ 105 DEG C after mixing
Melt, to obtain sheet stock with pre-set velocity feeding and extrusion, sheet stock is pulverized, after cooling, obtains described salt spray resistance auxiliary agent.Preferably,
Described with pre-set velocity feeding and extrusion, generally can carry out by using 70 model double screw extruders, rate of feeding
25HZ, extruded velocity 45HZ.Other refer to this data point reuse with type mechanical parameter, and sheet stock can not use screen cloth when pulverizing
When use pulverizer carry out coarse powder.
Another aspect of the present invention, it is provided that the purposes of a kind of high salt fog resistance powdery paints, walks including method used below
Rapid: the substrate surface of described high salt fog resistance powdery paints will to be used to be preheating to 40 ~ 50 DEG C, spray described high salt fog resistance powder
After the coating of end, described substrate surface is toasted at temperature 120 ~ 160 DEG C.Described preheating uses intermediate frequency coil heating.
Preferably, the purposes of the high salt fog resistance powdery paints that the present invention provides, after farther including to make described baking
The step of base material natural cooling.
Preferably, the purposes of the high salt fog resistance powdery paints that the present invention provides, described high salt fog resistance powdery paints should
For cast iron, aluminum casting.It is applied especially to engine cylinder-body, is cast aluminium or cast iron engine block further.Described high salt tolerant
Mist powdery paints is applicable to the engine cylinder-body that operating temperature is-25 DEG C ~ 50 DEG C.
The present invention, by selecting suitable raw material and selecting the firming agent matched to process, concurrently sets suitably use
Weight range, prepares described high salt fog resistance powdery paints, and the high salt fog resistance powdery paints coating of the present invention is for base material
Salt spray resistance is outstanding, it is to avoid the generation of the bad problem of coating salt spray resistance, when being applied to engine cylinder-body, and can be existing
Carry out on the basis of having engine cylinder-body spraying coating process, do not change in-situ spraying technique.The high salt fog resistance powder of the present invention is coated with
Material coating carries out neutral salt spray test, and result shows after 240h, coating one side corrosion ＜ 1mm, and coating is existing without foaming, peeling etc.
As occurring, the salt spray resistance of coating can be good.
Accompanying drawing explanation
Fig. 1 is the preparation flow schematic diagram of the high salt fog resistance powdery paints in one embodiment of the invention；
Fig. 2 is the using method schematic flow sheet of the high salt fog resistance powdery paints purposes in another embodiment of the present invention；
Fig. 3 is the adhesive force test result figure that the high salt fog resistance powdery paints coating in further embodiment of this invention is in kind；With
And
Fig. 4 is the neutral salt spray test result figure that the high salt fog resistance powdery paints coating in further embodiment of this invention is in kind.
Detailed description of the invention
Understand with reaching purpose and being readily apparent to make the creation characteristic of the present invention, technological means, below in conjunction with concrete real
Execute example and the present invention is expanded on further.It will be appreciated by those skilled in the art that following specifically described content be illustrative and
Nonrestrictive, should not limit the scope of the invention with this.
One embodiment of the present of invention provides a kind of high salt fog resistance powdery paints, including the component of following weight portion:
Epoxy resin: 42 ~ 52 weight portions；
Methyl phenolic phenolic resin: 5 ~ 10 weight portions；
Auxiliary agent: 10 ~ 20 weight portions；
Pigment: 1 ~ 2.5 weight portion；
Filler: 24 ~ 31 weight portions.
The epoxide equivalent of described epoxy resin is 700 ~ 800g/eq.Described epoxy resin has an area of anticorrosion selected from Shengli Oil Field
The epoxy resin E-12 of Materials Co., Ltd, the GESR904 of HongChang Electronic Materials Co., Ltd, or Langfang Nore letter chemical industry
The epoxy 014F of company limited.
The epoxide equivalent of described methyl phenolic phenolic resin is 195 ~ 220g/eq.Described methyl phenolic novolac resin is selected from
The NPCN-704(softening point of South Epoxy Resin (Kunshan) Co., Ltd. 85 ~ 95 DEG C).
Described pigment is at least one in titanium dioxide, white carbon black.Described filler be in wollastonite, Muscovitum, barium sulfate extremely
Few one.Such as, Beijing benefits the nation the wollastonite of great achievement superfine powder company limited, the thin,tough silk of Chuzhou Grea Minerals Co., Ltd.
Muscovitum, the barium sulfate of Guizhou Yong Xinjie mining industry company limited.
Described auxiliary agent includes the component of following weight portion: levelling agent: 1 ~ 5 weight portion；Levelling agent can be used alone Ningbo
GLP588 or GLP589 of South Sea Chemical Co., Ltd., it is possible to use the mixture of GLP588 and GLP589.Benzoinum: 0.3 ~
0.5 weight portion；Benzoinum in the present embodiment is also called 2-hydroxyl-1,2-diphenylethan；Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
In the present embodiment, described levelling agent is that alone GLP588 is preferably 1 weight portion, and alone GLP599 is preferably 5 weights
Amount part, in other embodiments of the present invention, can adjust according to practical situation when being used in mixed way GLP588, GLP599.
Described catalyst is the methylimidazole of NCM.
Described desiccant is the aluminium oxide C(AEROSIL Alu C winning wound Degussa (Evonik degussa)).
Described Benzoinum is the Benzoinum of Ningbo South-sea Chemical Co., Ltd., and the concrete consumption in auxiliary agent can be by this area skill
Art personnel adjust according to actual needs.
Please refer to Fig. 1, the preparation flow of the high salt fog resistance powdery paints showing in one embodiment of the invention
Schematic diagram.The preparation method of high salt fog resistance powdery paints that the present embodiment provides, comprises the following steps: by epoxy resin 42 ~
52 weight portions, methyl phenolic phenolic resin 5 ~ 10 weight portion, auxiliary agent 10 ~ 20 weight portion, pigment 1 ~ 2.5 weight portion, filler 24 ~ 31
Weight portion, uniformly mixes, melts, pulverizes；Wherein,
Described melted step is carried out at 95 ~ 105 DEG C；
It is 25 ~ 70 μm that described pulverising step is crushed to particle diameter；
It is ground again after described pulverising step and sieves thus prepared described high salt fog resistance powdery paints.
Described auxiliary agent includes the component of following weight portion:
Levelling agent: 1 ~ 5 weight portion；Described levelling agent can be used alone GLP588 or GLP589, it is possible to use GLP588 and
The mixture of GLP589；
Benzoinum: 0.3 ~ 0.5 weight portion；Benzoinum in the present embodiment is also called 2-hydroxyl-1,2-diphenylethan；
Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；
Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
Described levelling agent is GLP588, GLP599 of Ningbo South-sea Chemical Co., Ltd., and described catalyst is Shanghai He Shi
The methylimidazole of ancient piece of jade, round, flat and with a hole in its centre Chemical Co., Ltd., described desiccant is the aluminium oxide C winning wound Degussa (Evonik degussa)
(AEROSIL Alu C).Described Benzoinum is the Benzoinum of Ningbo South-sea Chemical Co., Ltd., the concrete consumption in described auxiliary agent
Can be adjusted according to actual needs by those skilled in the art.
In another embodiment of the present invention, still further provides the step preparing described salt spray resistance auxiliary agent: tripolyphosphate
Aluminum, resin, filler are according to aluminium triphosphate: resin: the ratio mixing of filler=1:1:1, uniformly enter at 95 ~ 105 DEG C after mixing
Row is melted, obtains sheet stock with pre-set velocity feeding and extrusion, is pulverized by sheet stock, obtains described salt spray resistance auxiliary agent after cooling.Preferably
Ground, described usual by using 70 model double screw extruders to carry out with pre-set velocity feeding and extrusion, rate of feeding 25HZ, squeezes
Go out speed 45HZ.Other refer to this data point reuse with type mechanical parameter, and sheet stock can be in the situation not using screen cloth when pulverizing
Lower use pulverizer carries out coarse powder.
Please refer to Fig. 2, the use of the high salt fog resistance powdery paints purposes showing in another embodiment of the present invention
Method flow schematic diagram.The purposes of the high salt fog resistance powdery paints that the present embodiment provides, including method step used below: will
The substrate surface using described high salt fog resistance powdery paints is preheating to 40 ~ 50 DEG C, sprays described high salt fog resistance powder and is coated with
After material, described substrate surface is toasted at temperature 120 ~ 160 DEG C.Described preheating uses intermediate frequency coil heating.Wherein,
Still further comprise the step of the base material natural cooling after described baking.
Preferably, the described high salt fog resistance powdery paints that the present invention provides is applied to cast iron, aluminum casting.It is applied especially to
Engine cylinder-body, is cast aluminium or cast iron engine block further.Described high salt fog resistance powdery paints is applicable to operating temperature
For the engine cylinder-body of-25 DEG C ~ 50 DEG C.
It is further elucidated with 1 ~ 3 couple of present invention of specific embodiment below:
Embodiment 1
A kind of high salt fog resistance powdery paints, including the component of following weight portion:
Epoxy resin 42 parts；
Methyl phenolic novolac resin 5.0 parts；
Levelling agent 4.2 parts；
Benzoinum 0.5 part；
Catalyst 0.2 part；
0.1 part of desiccant；
Salt spray resistance auxiliary agent 15 parts；
Titanium dioxide 0.3 part；
White carbon black 1.7 parts；
31 parts of barium sulfate.
In the present embodiment, the preparation method of described high salt fog resistance powdery paints, comprise the following steps:
The formula composition being first according to coating composition weighs raw material accurately, crosses high speed rotating at premixing tank back warp and uniformly mixes
(doing time in advance 5 ~ 10 minutes), then at the uniform velocity puts into double screw extruder mixed uniformly raw material and melts under the conditions of 95 ~ 105 DEG C
Melt extrusion；After chill roll, be pressed into tablet, after tablet cools down under natural temperature, use pulverizer sheet stock is pulverized or
Coarse crushing；Use pulverizer to use 180 eye mesh screens to carry out screening after being ground levigate pulverizing after the material cooling obtained to sieve,
Finally obtain the described high salt fog resistance powdery paints of uniform particle sizes's (25 ~ 70 μm).
In the present embodiment, the purposes of described high salt fog resistance powdery paints, comprise the following steps:
First, by engine cylinder-body after carrying out impeller blasting, steel tube surface is heated to (40 ~ 50 incite somebody to action) by intermediate frequency coil, so
After carry out spraying described high salt fog resistance powdery paints at dust free room.Afterwards engine cylinder-body is entered drying tunnel, toast, treat
Described high salt fog resistance powdery paints coating fully solidify after natural cooling.High salt fog resistance powder described in the present embodiment is coated with
Expect the same with normal engine cylinder body spraying method at the spraying method of engine cylinder-body, technique such as following table:
Please refer to shown in Fig. 3, for the adhesive force test result figure of the high salt fog resistance powdery paints coating in the present embodiment；
It can be seen from figure 3 that described high salt fog resistance powdery paints coating is carried out adhesive force test, two interlayers can be with 100/100 attachment.
Please refer to shown in Fig. 4, for the neutral salt spray test of the real high salt fog resistance powdery paints coating originally executed in example
Result figure；As seen from Figure 4, described high salt fog resistance powdery paints coating is carried out neutral salt spray test, after 240h, described coating
Unilateral corrosion ＜ 1mm, coating occurs without phenomenons such as foaming, peelings, illustrates that this coating salt spray resistance is the best.
Embodiment 2
A kind of high salt fog resistance powdery paints, including the component of following weight portion:
Epoxy resin E-12 52 parts；
Methyl phenolic novolac resin 10.0 parts；
Levelling agent GLP588 1.0 parts；
Benzoinum 0.3 part；
0.10 part of desiccant；
Catalyst 0.10 part；
Salt spray resistance auxiliary agent 9.0 parts;
Titanium dioxide 0.2 part；
White carbon black 0.8 part；
26.5 parts of barium sulfate.
In the present embodiment, the Preparation method and use of described high salt fog resistance powdery paints, with the preparation method of embodiment 1 and making
Identical by method, do not repeat them here.
Described high salt fog resistance powdery paints coating in the present embodiment is carried out neutral salt spray test, after 240h, described
Coating one side corrosion ＜ 1mm, coating occurs without phenomenons such as foaming, peelings, illustrates that this coating salt spray resistance is the best.
Embodiment 3
A kind of high salt fog resistance powdery paints, including the component of following weight portion:
Epoxy resin E-12 48 parts；
Methyl phenolic novolac resin 6.8 parts；
Levelling agent GLP599 5.0 parts；
Benzoinum 0.4 part；
0.2 part of desiccant；
Catalyst 0.2 part；
Salt spray resistance auxiliary agent 10 parts；
Titanium dioxide 0.5 part；
White carbon black 2.0 parts；
24 parts of barium sulfate.
In the present embodiment, the Preparation method and use of described high salt fog resistance powdery paints, with the preparation of embodiment 1 or 2
Method and using method are identical, do not repeat them here.
Described high salt fog resistance powdery paints coating in the present embodiment is carried out neutral salt spray test, after 240h, described
Coating one side corrosion ＜ 1mm, coating occurs without phenomenons such as foaming, peelings, illustrates that this coating salt spray resistance is the best.
Comparison example: when the epoxy resin content reduced in described high salt fog resistance powdery paints is to less than 42%, such as 38% or
Lower；Or reduce the salt spray resistance auxiliary agent content in described high salt fog resistance powdery paints to less than 7%, and such as 6% or lower, can lead
The salt spray resistance causing the high salt fog resistance powdery paints coating after baking declines, then do not reach corrosion ＜ in coating one side after 240h
1mm, the requirement that coating occurs without phenomenons such as foaming, peelings.And, the above epoxy resin and the content of salt spray resistance adjuvant component
Too high cost also can be caused to increase.
The high salt fog resistance powdery paints of the present invention is by selecting suitable proportioning raw materials so that described high salt fog resistance powder
The adhesive force of end coating and base material can reach cross-hatching 0 grade, and described high salt fog resistance powdery paints is for the adhesive property of base material
Well, salt fog resistance is good.The present invention, by selecting suitable raw material and selecting the firming agent matched to process, concurrently sets conjunction
Suitable amount ranges, prepares described high salt fog resistance powdery paints, the high salt fog resistance powdery paints coating of the present invention for
The salt spray resistance of base material is outstanding, it is to avoid the generation of the bad problem of coating salt spray resistance, when being applied to engine cylinder-body,
Can carry out on the basis of available engine cylinder body spraying coating process, not change in-situ spraying technique.High salt fog resistance to the present invention
Powdery paints coating carries out neutral salt spray test, and result shows after 240h, coating one side corrosion ＜ 1mm, and coating is without bubbling, shelling
The phenomenon such as fall occurs, and the salt spray resistance of coating can be good.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not right
The restriction of embodiments of the present invention, but, those skilled in the art are it is understood that in the essence without departing from the present invention
In the case of god and scope, it is also possible to the detailed description of the invention of the present invention is made various change and replacement.These changes and replacement
All fall in claims of the present invention limited range.
Claims (13)
1. one kind high salt fog resistance powdery paints, it is characterised in that: include the component of following weight portion:
Epoxy resin: 42 ~ 52 weight portions；
Methyl phenolic phenolic resin: 5 ~ 10 weight portions；
Auxiliary agent: 10 ~ 20 weight portions；
Pigment: 1 ~ 2.5 weight portion；
Filler: 24 ~ 31 weight portions.
High salt fog resistance powdery paints the most according to claim 1, it is characterised in that: the epoxide equivalent of described epoxy resin
It is 700 ~ 800g/eq.
High salt fog resistance powdery paints the most according to claim 1, it is characterised in that: described methyl phenolic phenolic resin
Epoxide equivalent is 195 ~ 220g/eq.
High salt fog resistance powdery paints the most according to claim 1, it is characterised in that: described pigment is titanium dioxide, white carbon black
In at least one.
High salt fog resistance powdery paints the most according to claim 1, it is characterised in that: described filler be wollastonite, Muscovitum,
At least one in barium sulfate.
High salt fog resistance powdery paints the most according to claim 1, it is characterised in that: described auxiliary agent includes following weight portion
Component:
Levelling agent: 1 ~ 5 weight portion；
Benzoinum: 0.3 ~ 0.5 weight portion；
Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；
Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
7. the preparation method of the high salt fog resistance powdery paints described in an any one of claim 1 ~ 6, it is characterised in that: include
Following steps: by epoxy resin 42 ~ 52 weight portion, methyl phenolic phenolic resin 5 ~ 10 weight portion, auxiliary agent 10 ~ 20 weight portion, face
Material 1 ~ 2.5 weight portion, filler 24 ~ 31 weight portion, uniformly mix, melt, pulverize；Wherein,
Described melted step is carried out at 95 ~ 105 DEG C；
It is 25 ~ 70 μm that described pulverising step is crushed to particle diameter；
It is ground again after described pulverising step and sieves, thus preparing described high salt fog resistance powdery paints.
The preparation method of high salt fog resistance powdery paints the most according to claim 7, it is characterised in that: described auxiliary agent includes
The component of following weight portion:
Levelling agent: 1 ~ 5 weight portion；
Benzoinum: 0.3 ~ 0.5 weight portion；
Catalyst: 0.1 ~ 0.2 weight portion；
Desiccant: 0.1 ~ 0.2 weight portion；
Salt spray resistance auxiliary agent: 9 ~ 15 weight portions.
The preparation method of high salt fog resistance powdery paints the most according to claim 8, it is characterised in that: farther include system
The step of standby described salt spray resistance auxiliary agent: by aluminium triphosphate, resin, filler according to aluminium triphosphate aluminum phosphate: resin: filler=
The ratio mixing of 1:1:1, uniformly melts at 95 ~ 105 DEG C after mixing, obtains sheet stock with pre-set velocity feeding and extrusion,
Sheet stock is pulverized, after cooling, obtains described salt spray resistance auxiliary agent.
The preparation method of high salt fog resistance powdery paints the most according to claim 9, it is characterised in that: described to preset
Speed feeding and extrusion, by using 70 model double screw extruders to carry out, rate of feeding 25HZ, extruded velocity 45HZ.
The purposes of the high salt fog resistance powdery paints described in 11. 1 kinds of any one of claim 1 ~ 6, it is characterised in that: described height
Salt fog resistance powdery paints is applied to engine cylinder-body or cast iron or aluminum casting.
The purposes of 12. high salt fog resistance powdery paints according to claim 11, it is characterised in that: comprise the following steps:
The substrate surface that will use described high salt fog resistance powdery paints is preheating to 40 ~ 50 DEG C, sprays described high salt fog resistance powder
After coating, described substrate surface is toasted at temperature 120 ~ 160 DEG C.
The purposes of 13. high salt fog resistance powdery paints according to claim 12, it is characterised in that: farther include to make institute
State the step of the base material natural cooling after baking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107964336A (en) * | 2017-08-16 | 2018-04-27 | 广东美的环境电器制造有限公司 | UV cures anion powder coating and its preparation method and application and anion release product |
| CN108300145A (en) * | 2017-09-05 | 2018-07-20 | 湖州加成金属涂料有限公司 | A kind of zinc-plated base material powdery paints and preparation method |
| CN108441084A (en) * | 2018-04-28 | 2018-08-24 | 山东兰生环保科技有限公司 | The powdery paints of high resisting salt fog corrosion |
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| CN107964336A (en) * | 2017-08-16 | 2018-04-27 | 广东美的环境电器制造有限公司 | UV cures anion powder coating and its preparation method and application and anion release product |
| CN108300145A (en) * | 2017-09-05 | 2018-07-20 | 湖州加成金属涂料有限公司 | A kind of zinc-plated base material powdery paints and preparation method |
| CN108441084A (en) * | 2018-04-28 | 2018-08-24 | 山东兰生环保科技有限公司 | The powdery paints of high resisting salt fog corrosion |
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