CN106590406A - Preparation method of polyphenylene sulfide composite coating - Google Patents
Preparation method of polyphenylene sulfide composite coating Download PDFInfo
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- CN106590406A CN106590406A CN201611119903.7A CN201611119903A CN106590406A CN 106590406 A CN106590406 A CN 106590406A CN 201611119903 A CN201611119903 A CN 201611119903A CN 106590406 A CN106590406 A CN 106590406A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment 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
- B05D3/02—Pretreatment 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
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment 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
- B05D3/04—Pretreatment 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 exposure to gases
- B05D3/0406—Pretreatment 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 exposure to gases the gas being air
- B05D3/0413—Heating with air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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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
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/02—Polythioethers; Polythioether-ethers
-
- 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
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a preparation method of a polyphenylene sulfide (PPS) composite coating and belongs to the field of material preparation. The preparation method of the polyphenylene sulfide composite coating is characterized by comprising the following steps: preparing PPS liquid coating; soaking the surface of a pretreated metal matrix into the PPS coating and slowly extracting to level the coating on the surface of the metal matrix; putting into an electrothermal blowing drying box and drying the coating; plasticizing each layer at high temperature, quickly transferring from a high-temperature box-shaped electric furnace to cold water to quench to quickly chill the coating to finish preparation. According to the particular steps of mixing the coating by mixing fillers and basic materials by a liquid phase mixing method and the process flow of the coating preparation, the prepared coating is black gray, flat and glossy; furthermore, the preparation method of the PPS composite coating is simple in process, easy to operate and suitable for popularization and application.
Description
Technical field
The invention belongs to field of material preparation, more particularly to a kind of preparation method of polyphenylene sulfide composite coating.
Background technology
The quality of coating except the characteristic with coating itself has it is directly related in addition to, the bond strength of coating and metal base surface
（Adhesive force）And affect a key factor of coating performance.The size of bond strength will directly affect effective use of coating
Life-span.If the bond strength of coating is little, coating cannot be firmly bonded on base material, gently can then reduce the use longevity of coating
Life, causes premature failure, seriously can then cause coating local bubble, be cracked, coming off and cannot use, or even can cause engineering
Accident.The bond strength of coating, including attachment of the coating to matrix, also including the cohesion of coating itself, according to adhesive force and interior
The property of the different and matrix of poly- power relative intensity, the destruction of organic coating mainly have three kinds of primitive forms, i.e. adhesive force to break
Bad, Cohesive failure and matrix destruction.The failure of coating, often coating is loss of adhesion with metallic matrix, or even completely
Interface binding power is lost, causes large-area disbonding, ultimately resulted in the failure of coating.
The content of the invention
Present invention seek to address that the problems referred to above, there is provided a kind of preparation method of polyphenylene sulfide composite coating.
The technical scheme is that：
A kind of preparation method of polyphenylene sulfide composite coating, it is characterised in that comprise the steps：（1）With dehydrated alcohol and distillation
Water dilution pps powder is dispersion liquid, is uniformly at the uniform velocity stirred；Addition polybenzoate, polyether sulfone, molybdenum bisuphide and graphite, mixing
Uniform stirring；It is slowly added to crosslinking accelerator tripolycyanamide and hydroxy-silicone-oil emulsion, KH560 silane couplers, defoamer, silane
Levelling agent, dodecylbenzene sodium sulfonate surfactant, mix homogeneously stirring；（2）Dispersion liquid is placed in into ball milling in ball grinder, and
Ph value of emulsion is adjusted to 7 or so, viscosity is adjusted with dehydrated alcohol, is obtained PPS polyphenylene sulfide liquid coating；（3）Will be pretreated
Metal base surface is immersed in polyphenylene sulfide coating, is then lentamente extracted, and makes absorption in the painting stream of metal base surface
It is flat；（4）It is positioned in electric drying oven with forced convection, is incubated 15-20min, dries coating；（5）Each floor height temperature is plastified；High temperature is plastified
It is quickly transferred to cold quenching-in water afterwards from high-temperature box-type furnace so as to rapidly cool down, completes to prepare.
The preparation method of polyphenylene sulfide composite coating of the present invention, the mass fraction of the KH560 silane couplers
For 5%.
The preparation method of polyphenylene sulfide composite coating of the present invention, the Ball-milling Time are 2-3h.
The preparation method of polyphenylene sulfide composite coating of the present invention, the temperature of the air dry oven is 70 DEG C.
The preparation method of polyphenylene sulfide composite coating of the present invention, the temperature of the high temperature plasticizing is 310-360 DEG C.
The method have technical effect that：
The preparation method of polyphenylene sulfide composite coating of the present invention, is carried out to filler and base materials powder using li quid mixing method
The concrete steps of coating, and technological process prepared by coating are mixed with, prepared coating is in black gray expandable, and coating is smooth
It is glossy, and the preparation method process is simple of polyphenylene sulfide composite coating of the present invention, it is easy to operate, be suitable to promote and answer
With.
Specific embodiment
Embodiment
A kind of preparation method of polyphenylene sulfide composite coating, it is characterised in that comprise the steps：（1）With dehydrated alcohol and
Distilled water diluting pps powder is dispersion liquid, is uniformly at the uniform velocity stirred；Addition polybenzoate, polyether sulfone, molybdenum bisuphide and graphite,
Mix homogeneously is stirred；It is slowly added to crosslinking accelerator tripolycyanamide and hydroxy-silicone-oil emulsion, KH560 silane couplers, defoamer,
Silane levelling agent, dodecylbenzene sodium sulfonate surfactant, mix homogeneously stirring；（2）Dispersion liquid is placed in into ball in ball grinder
Mill, and ph value of emulsion is adjusted to 7 or so, viscosity is adjusted with dehydrated alcohol, obtain PPS polyphenylene sulfide liquid coating；（3）By pretreatment
Metal base surface afterwards is immersed in polyphenylene sulfide coating, is then lentamente extracted, and makes absorption in the painting of metal base surface
Stream is put down；Absorption is made in the coating levelling of metal base surface, then the coating gathered by substrate edges portion is absorbed.Coating procedure
In, the thickness of each sample coatings should not be too thick, and the THICKNESS CONTROL of coating ensures uniform thick as far as possible in 20-40um every time
Degree；（4）It is positioned in electric drying oven with forced convection, is incubated 15-20min, dries coating；As in coating, most of solvent is ethanol
And water, so readily volatilized.The temperature of drying baker is unsuitable too high, when too high, can cause the drying and volatilizing excessive velocities of coating, easily
Cause the uneven of coating surface, cracking, peeling and peeling；When temperature is too low, when drying time is not enough, coating can not be complete
It is dried, the defects such as the foaming of coating local or pin hole, and the easily generation oxidation reaction shadow in high temperature plasticizing process can be caused
Ring the performance of coating.（5）Each floor height temperature is plastified；Quench during cold water is quickly transferred to from high-temperature box-type furnace after high temperature plasticizing
Fire so as to rapidly cool down, to reduce high molecular degree of crystallinity in the internal stress and coating of coating, reduces crystal size, so as to
The coating that good toughness, bond strength are high and surface is more smooth is obtained, completes to prepare.High temperature is plastified, and is also called heat cure, its purpose
It is to make molecular resin full cross-linked.Coated sample is placed in high-temperature box-type furnace and is heated to more than fusing point, make resinous wood
Material crosslinking curing, coating melt levelling at high temperature into continuous coating.Plasticizing is key, and solidification temperature and hardening time are shadows
Coating key factor in the curing process is rung, the oxidation cross-linked ability under conditions of high-temperature time is enough of resin in plasticizing process
Can carry out, but over-crosslinked can make coating become fragile, the bond strength of the too high coating of temperature can decline, thus need to control temperature and
Time.In order to ensure the bond strength of coating and matrix, using relatively low temperature-curable subbing, prevent and reduce Metal Substrate
The oxidation of body and polyphenylene sulfide composite coating；Using higher temperature-curable surface layer, this crosslinking to coating is beneficial.
The preparation method of polyphenylene sulfide composite coating of the present invention, the mass fraction of the KH560 silane couplers
For 5%.
The preparation method of polyphenylene sulfide composite coating of the present invention, the Ball-milling Time are 2-3h.
The preparation method of polyphenylene sulfide composite coating of the present invention, the temperature of the air dry oven is 70 DEG C.
The preparation method of polyphenylene sulfide composite coating of the present invention, the temperature of the high temperature plasticizing is 310-360 DEG C.
, there is an optimal solidification temperature scope in coating forming process in one timing hardening time of coating.Work as temperature
During less than 340 DEG C, the bond strength of coating is raised with temperature and is increased, this be as the melt temperature of composite coating is higher, and
Their viscosity is larger, and the process for melting levelling in certain hour coating needs certain temperature.When the temperature is too low, can because
The melt viscosity of coating is high, and fluidity of molten is bad, not only affects coating leveling, easily produces pin hole, but also meeting
Reduce the binding ability of coating.When solidification temperature is higher, the levelability of coating is naturally better, and in coating, defect just more, is applied
Layer is more with effective binding site of matrix or calmodulin binding domain CaM is bigger, so as to coating will be higher with the bond strength of steel.Work as temperature
In 340 DEG C when, Ekonol can occur the transformation of liquid crystal crystal formation at this temperature, PPS the and PES envelope Ekonol for melting completely
Coating levelling is made with filler.When temperature is higher than 340 DEG C, the bond strength of coating is raised with temperature on the contrary and is reduced, this be because
Too high for temperature, the surface of Q235 steel can occur obvious oxidative phenomena, form layer oxide film, hinder polyphenylene sulfide and steel table
The chemical bonding effect in face.Additionally, temperature is too high, can cause PPS and PES in coating that oxidation reaction occurs, cause coating to become
Yellow, blackening is even decomposed, and the three-dimensional-structure that oxidative crosslinking process is formed increases can the melt viscosity of coating, further result in painting
Layer and the decline or failure of metallic matrix bond strength.Meanwhile, when polyphenylene sulfide is decomposed, can generate a kind of with low point
The pungent gas of sulfide of son amount, not only affects physically and mentally healthy, but also can be to environment.Consider, be combined and apply
The solidification temperature control of layer is advisable in the range of 330 DEG C -350 DEG C.
When solidification temperature is certain, when hardening time is less than 20 minutes, the bond strength of coating can be with the increasing of hardening time
Plus and increase, reach within 20 minutes or so maximum, this is because coating melting levelling process need the regular hour, it is short
In time, PPS and PES do not have to melt completely, composite coating can not clinkering completely, cause bond strength not high.And the time gets over
Long, the flow leveling of coating will be better, and the defect of coat inside accordingly will be reduced, and effective attachment point or region are more,
Therefore bond strength is higher.It is more than 20 minutes when the curing of coatings time, finds the bond strength of coating on the contrary with hardening time
Extend with the trend being obviously reduced, when heated between when reaching 120 min, bond strength only has 8.15MPa.This is because
As hardening time extends, the oxide-film occurred on Q235 steel matrix surface is served with the increase of the oxidation cross-linked degree of PPS, PES
Mastery reaction, oxide-film hinder the Fe of the lone pair electrons and metallic matrix of S atom in PPS3+Generation coordination, while coating
Middle PPS is oxidation cross-linked to be aggravated to form three-dimensional-structure, increase coating over oxidation and become fragile, can affect coating and metallic matrix on the contrary
Bonding.Consider, control solidification time is advisable in the range of 15-25 min.
From diffusion theory it is known that as the increase of coating thickness, the porosity of coating are reduced, coating can be improved
Residual stress can be produced during brilliant etc., with coating thick, residual stress increase.In addition, the heat conductivity of thick coating is little,
The internal-external temperature difference of coating can become very big under the high temperature conditions, the phenomenon such as being cracked and come off easily occur in coating, and can reduce on the contrary
The performance of coating.Therefore, in order that the bond strength of the composite coating has good cohesive force, it is necessary to control coating
Thickness.Impermeabilisation ability, beneficial to the performance for improving coating.However, coating is too thick, the hardening time of coating can be extended or painting is improved
The solidification temperature of layer, reduces the bond strength of coating on the contrary, meanwhile, coating is in solidification shrinkage and uneven knot.Work as coating
When thickness is less than 100um, coating/substrate combinating strength is dramatically increased with the increase of coating layer thickness.When coating layer thickness is 100-
During 200um, the bond strength of coating is essentially identical, about 40Mpa, and the shaping of coating is good, organizes than more uniform, without peeling
Phenomenon.When coating layer thickness is more than 200um, bond strength increases with thickness and reduces, and the amplitude of reduction is shallower.But work as coating
When thickness is more than 600um, anchoring strength of coating downward trend increase, when thickness is 1000um, bond strength only has 20Mpa or so,
And coating shedding phenomenon is more apparent.When coating layer thickness is too thin, bond strength of the coating with matrix is difficult to ensure that, can be affected
The impermeabilisation ability of coating, wear-resistant, anticorrosion and other effects, while in view of with the increase of applied thickness, coating number of times phase
Should increase, the complexity and processing cost of coated technique accordingly increase, while repeatedly coating can be between coating and metallic matrix
Combination produce harmful effect..Consider, the coating layer thickness control can obtain more satisfactory effect in 100-200 um
Really.
Claims (5)
1. a kind of preparation method of polyphenylene sulfide composite coating, it is characterised in that comprise the steps：（1）With dehydrated alcohol and steaming
Distilled water dilution pps powder is dispersion liquid, is uniformly at the uniform velocity stirred；Addition polybenzoate, polyether sulfone, molybdenum bisuphide and graphite, mix
Close uniform stirring；It is slowly added to crosslinking accelerator tripolycyanamide and hydroxy-silicone-oil emulsion, KH560 silane couplers, defoamer, silicon
Alkane levelling agent, dodecylbenzene sodium sulfonate surfactant, mix homogeneously stirring；（2）Dispersion liquid is placed in into ball milling in ball grinder,
And ph value of emulsion is adjusted to 7 or so, viscosity is adjusted with dehydrated alcohol, obtain PPS polyphenylene sulfide liquid coating；（3）After pretreatment
Metal base surface be immersed in polyphenylene sulfide coating, then lentamente extract, make absorption in the coating of metal base surface
Levelling；（4）It is positioned in electric drying oven with forced convection, is incubated 15-20min, dries coating；（5）Each floor height temperature is plastified；High temperature is moulded
Cold quenching-in water is quickly transferred to after change from high-temperature box-type furnace so as to rapidly cool down, completes to prepare.
2. the preparation method of polyphenylene sulfide composite coating according to claim 1, it is characterised in that：The KH560 silane
The mass fraction of coupling agent is 5%.
3. the preparation method of polyphenylene sulfide composite coating according to claim 1, it is characterised in that：The Ball-milling Time is
2-3h。
4. the preparation method of polyphenylene sulfide composite coating according to claim 1, it is characterised in that：The air dry oven
Temperature be 70 DEG C.
5. the preparation method of polyphenylene sulfide composite coating according to claim 1, it is characterised in that：The high temperature plasticizing
Temperature is 310-360 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119903.7A CN106590406A (en) | 2016-12-08 | 2016-12-08 | Preparation method of polyphenylene sulfide composite coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119903.7A CN106590406A (en) | 2016-12-08 | 2016-12-08 | Preparation method of polyphenylene sulfide composite coating |
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| Publication Number | Publication Date |
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| CN106590406A true CN106590406A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611119903.7A Pending CN106590406A (en) | 2016-12-08 | 2016-12-08 | Preparation method of polyphenylene sulfide composite coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312449A (en) * | 2017-08-08 | 2017-11-03 | 肥西县通力机械有限公司 | A kind of heat-punch member high temperature oxidation resisting nano-composite coating and its processing method |
-
2016
- 2016-12-08 CN CN201611119903.7A patent/CN106590406A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312449A (en) * | 2017-08-08 | 2017-11-03 | 肥西县通力机械有限公司 | A kind of heat-punch member high temperature oxidation resisting nano-composite coating and its processing method |
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Application publication date: 20170426 |