CN106167667A - Pure epoxy system delustring low-cure coating composition and coating material thereof for carbon fiber base material - Google Patents
Pure epoxy system delustring low-cure coating composition and coating material thereof for carbon fiber base material Download PDFInfo
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- CN106167667A CN106167667A CN201610752505.2A CN201610752505A CN106167667A CN 106167667 A CN106167667 A CN 106167667A CN 201610752505 A CN201610752505 A CN 201610752505A CN 106167667 A CN106167667 A CN 106167667A
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- 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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Abstract
The present invention relates to a kind of carbon fiber base material low-cure coating composition, wherein, comprise 2 types to 4 types BPA or phenol aldehyde modified epoxy resin, phenols curing agent compositions, catalyst.The problem that the present invention solves carbon fiber primary coat application: 1. realizing low-temperature fast-curing, at 120 DEG C, 15min completes；2. the scope of one-pass film-forming thickness 70～90um；3. levelling is good, PCI grade more than 7 grades；4. hardness is high, pencil hardness 1～more than 2H；5. there is good storage stability, i.e. can preserve under the conditions of 25 DEG C more than 28 days, and conglomeration does not occur, powder flowbility is good；6. glossiness is 6～8%.
Description
Technical field
The present invention relates to the pure epoxy system delustring low-cure coating composition for carbon fiber base material, particularly, belong to
In energy-conserving and environment-protective, low-temperature setting field of new.
Background technology
Carbon fibre material not heatproof, has strict demand to solidification temperature.Coating thickness, levelling grade etc. are had higher wanting
Ask.Typically based on oil paint on market, because using substantial amounts of solvent, limit answering of oil paint carbon fiber base material again
With., there is a lot of problem in presently commercially available water paint, such as: cost is the highest, is not environmental protection coating material, film performance thoroughly
Bad, such as hardness is the highest, surface gloss is inadequate, it is impossible to one-pass film-forming reaches enough thickness.
Epoxide powder coating is a kind of to be entirely free of the anticorrosive paint that solvent sprays in powder form, in its paint film prepared
Containing many hydroxyls and ehter bond, thus metal, pottery, glass, timber isopolarity ground had excellent adhesive force, with tradition
Solvent reducible coatings compare, epoxide powder coating is pollution-free, coating is convenient, curing rate is fast and the feature such as excellent performance.
Realize powdery paints cryogenic curing and have bigger difficulty technically.First, the curing system of powdery paints is one
Plant the curing system of low temperature latency, if this system low-temperature reactivity is higher, powder powder process extrusion and storage certainly will be had influence on
Depositing stability, the resin that on the other hand powdery paints is used and firming agent are all the solids of relatively high softening-point, melt at low temperatures
Melt-viscosity is higher, and when low-temperature setting, film is difficult to levelling, affects surface effect.If use the relatively low resin of softening point with
Though firming agent can reduce melt viscosity, but the storage stability of powder is deteriorated, and needs deepfreeze to preserve, brings to use many
Inconvenience.Therefore, seek a kind of energy to be suitable for the existing higher softening point of powder storage and have again the resin of suitable reactivity with solid
Agent is to prepare the key of low temperature cured powder coating.
Summary of the invention
The present invention proposes in view of the above problems, it is an object of the invention to provide a kind of carbon fiber base material delustring low temperature
Cure coating compositions, wherein, comprises 2 types to 4 types BPA or phenol aldehyde modified epoxy resin, phenols curing agent compositions, catalysis
Agent.
Carbon fiber base material delustring low-cure coating composition of the present invention, wherein, described 2 types to 4 types BPA or
Phenol aldehyde modified epoxy resin is that described 2 types are to 4 types BPA or phenol aldehyde modified epoxy resin, and 25 DEG C of solution viscosities are 230mPa s
Above, epoxide equivalent be more than 252g/eq., softening point be the resin of more than 82 DEG C.
Carbon fiber base material delustring low-cure coating composition of the present invention, wherein, described phenols curing agent group
Compound be in G-92, G-91 at least one phenols curing agent 1 and in G-151, G-152, G-154 at least one phenols
The mixture of firming agent 2, and phenols curing agent 1: the mass ratio 2: 1 of phenols curing agent 2.
In the present invention, described phenols curing agent 1 uses 150 DEG C of melt viscosities to be 100～470mPa s, hydroxyl equivalent is
235～280g/eq., softening point is the phenolic resin of 74～90 DEG C.
Delustring low-temperature setting flat paint compositions of the present invention, wherein, lewis acid and lewis base are combined and are urged
The amount of agent for 1: 1, and relative to the compositions of 100 mass %, is 0.5～3 mass % with molar ratio computing.
Delustring low-temperature setting flat paint compositions of the present invention, wherein, the granularity of coating composition is, D50 exists
In the range of 25-50um.
Carbon fiber base material delustring low-cure coating composition of the present invention, wherein, also includes pigment and or fills out
Material.
The present invention also provides for a kind of carbon fiber base material delustring low temperature solidification coating material, it is characterised in that use above-mentioned
Delustring low-cure coating composition be prepared from.
Delustring low temperature solidification coating material of the present invention, its coating below 120 DEG C at a temperature of solidify 10～15
Minute.
Delustring low temperature solidification coating material of the present invention, it is characterised in that the coating layer thickness of primary coating is 100um
Above.
The present invention and then the preparation method of a kind of delustring low temperature solidification coating material is provided, it is characterised in that use this
Prepared by bright described delustring low-cure coating composition, it comprises the following steps: the surface pre-treatment step of carbon fiber board, molten
Melt spraying process at a temperature of extrusion step, 40 DEG C～90 DEG C, below 120 DEG C at a temperature of solidify the solidification step of 10～15 minutes
Suddenly.
By the present invention, solve the problem that the primary coat for carbon fiber base material is applied: 1. realize low-temperature fast-curing,
At 120 DEG C, 15min completes；2. the scope of one-pass film-forming thickness 70～90um；3. levelling is good, PCI grade more than 7 grades；4. hardness
Height, pencil hardness 1～more than 2H；5. there is good storage stability, i.e. can preserve under the conditions of 25 DEG C more than 28 days,
And there is not conglomeration, powder flowbility is good；6. glossiness is 6～8%.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below, the specific embodiment to the present invention
It is described in detail.
During such as the formula design of the epoxy systems low temperature cure powder coating compositions of the present invention, due to manufacturing condition
Harsher, select formula and production technology particularly critical, not so will cause formula failure.
A kind of carbon fiber base material low-cure coating composition of the present invention, wherein, comprise 2 types to 4 types BPA or
Phenol aldehyde modified epoxy resin, phenols curing agent compositions, catalyst.
Described 2 types are preferably to 4 types BPA or phenol aldehyde modified epoxy resin, 25 DEG C of solution viscosities be more than 230mPa s,
The resin that epoxide equivalent is more than 252g/eq., softening point is more than 82 DEG C, for example, it is possible to enumerate Hensel to step preparation
AralditeGT1804、AralditeGT6063、AralditeGT6064、AralditeGT6084-2、AralditeGT6703、
AralditeGT7004, AralditeGT7072, AralditeGT7444, it is also possible to enumerate the KD-that state of Korea S all prepares
211SW, KD-211E, KD-211G, KD-213, KD-214C, KD-242C, KD-211G, KD-242GHF, KD-243C, but do not limit
In this.
Carbon fiber base material delustring low-cure coating composition of the present invention, wherein, described phenols curing agent group
Compound be in G-92, G-91 at least one phenols curing agent 1 and in G-151, G-152, G-154 at least one phenols
The mixture of firming agent 2, and phenols curing agent 1: the mass ratio 2: 1 of phenols curing agent 2.
Described phenols curing agent 1 is, 150 DEG C of melt viscosities are 100～470mPa s, hydroxyl equivalent is 235～280g/
Eq., softening point be the phenolic resin of 74～90 DEG C, can enumerate, G-92, D.E.H.81, D.E.H.82, D.E.H.84,
D.E.H.85, D.E.H.90 etc., but it is not limited to this.
Low-temperature setting flat paint compositions of the present invention, wherein, lewis acid and lewis base united catalyst
Amount with molar ratio computing for 1: 1, and relative to the compositions of 100 mass %, be 0.5～3 mass %.
The present invention uses lewis-base catalyst, can enumerate:
IMIDAZOLE CATALYST CUREZOL C17Z (four countries' chemical conversion industry system), 2-PHENYL IMIDAZOLE
CUREZOL 2PZ (four countries' chemical conversion industry is made), IMIDAZOLE CATALYST CUREZOL C11Z (four countries' chemical conversion industry system),
2-METHYLIMIDAZOLE DYHARD MI-C (win wound), 2-ISOPROPYLIMIDA ZOLE CUREZOL 2IZ (four countries
Become industry system), but it is not limited to this.
The lewis acid catalyst used in the present invention, can enumerate:
TRIPHENYL PHOSPHINE (ATOFINA) (A Kema system), TETRABUTYLAMMONIUM BROMIDE
(SHELL) (Shell Chemical Co), ETHYLTRIPHENYLPHOSPHONIUM IODIDE (TECHNO.) (TECHNO CHEMIE
System), ETHYL TRIPHENYLPHOSPHONIUM BROMIDE (TECHNOCHEMIE system), BENZYL
TRIETHYLAMMONIUM CHLORIDE (BTEAC) (U.S.'s forest-road chemical company system), but it is not limited to this.
Low-temperature setting flat paint compositions of the present invention, wherein, the granularity of coating composition is 10～120 micro-
Rice, D50 is in the range of 25-50um.
In the present invention, filler can use the mineral of the various safety and environmental protections of the low oil absorption ferric such as calcium carbonate, Kaolin,
But it is not limited to this.In the present invention, pigment can use arbitrary organic or inorganic pigment, as long as meeting heatproof, and safety and environmental protection,
The most do not do other to limit, such as, can enumerate such as titanium dioxide, ferrum oxide, zinc oxide etc., metal hydroxides, metal dust,
Sulfide, sulfate, carbonate, silicate such as aluminium silicate, white carbon black, Talcum, china clay, barite, vivianite, You Jihong, organic
Brown red etc., but it is not limited to this.
Described auxiliary agent consumption in powder coating formulation is the least, but its effect is very important, and conventional auxiliary agent has stream
Flat agent, degasser, delustering agent, wax powder, edge coverage modifying agent etc..These auxiliary agents generally must stably remain in ability in powdery paints
Can play its due function, the auxiliary agent therefore used to have the good compatibility with polyester resin of the present invention, except this
Outside, the auxiliary agent to the present invention, it is not specially limited.
When preparing low temperature cured powder coating, the Main Function of levelling agent is that the melt surface reducing powdery paints is opened
Power, makes coating be able to rapidly levelling before film-forming, it is to avoid the generation of the surface defect such as Pericarpium Citri tangerinae and shrinkage cavity, therefore a small amount of for making
Levelling agent plays one's part to the full, the necessary full and uniform dispersion of the levelling agent in formula, is distributed to the levelling in resin carrier in advance
Agent dispersion effect is more preferable, is more beneficial for it and plays a role in watery fusion solidification process.
Selecting degasser such as Benzoinum and wax powder purpose is that bubble is reduced or eliminated, in LOTES process can rapidly by
Bubble is deviate from from coating, prevents coating from occurring such as pin hole visual defects, and rational degasser screens extremely important, low melting point or
Low viscosity degassing auxiliaries is more beneficial for bubble and deviates from from coating.
In the present invention, selecting degasser such as Benzoinum and wax powder purpose is that bubble is reduced or eliminated, in low-temperature setting mistake
Bubble is deviate from rapidly from coating by Cheng Zhongneng, prevents coating from such as pin hole visual defects occur, and rational degasser screens very
Important, low melting point or low viscosity degassing auxiliaries are more beneficial for bubble and deviate from from coating.In the present invention, as degassing/froth breaking
Agent is preferably used Benzoinum (Qidong, Jiangsu), POWDERMATE 542DG (Troy chemistry system), etc., but it is not limited to this.
In the present invention, levelling agent can use PL-200 (U.S.'s Estron system) PV-88 (WORLEE-CHEMIE),
Deng；As wax powder: polyethylene, polypropylene, polyamide, politef, and various modified waxes powder, such as: LICOWAX PE
520P (Clariant chemical industry system), CERIDUST 9615A (Clariant chemical industry system), but it is not limited to this.
A kind of low-temperature setting plane coating material of the present invention, it is characterised in that use above-mentioned low-temperature setting plane to be coated with
Feed composition.Low-temperature setting plane coating material of the present invention, its coating below 130 DEG C at a temperature of solidify 3 minutes
It is rapidly completed.
The present invention further provides the preparation method of a kind of low-temperature setting plane coating material, it is characterised in that use this
Prepared by the low-temperature setting flat paint compositions described in invention, it comprises the following steps: surface pre-treatment step, spraying process,
Curing schedule.
Described surface pre-treatment step, can use conventional use of method, as long as powder paint compositions can be reached
Sprayable condition, there is no special requirement.
Described spraying process, 40～90 DEG C of spray treatment；Conventional use of spray equipment can be used to carry out, but as long as
Smooth coating can be obtained, all can use.
Curing schedule, below 130 DEG C at a temperature of 3 minutes fast setting.
Embodiment
Embodiment 1
First, 500g EEW, 100g as modified epoxy is weighed as G-92,50g conduct of phenols curing agent 1
G-151,10g of phenols curing agent 2 is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax
Powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper,
To tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses heat exchanger conveying in secondary process of lapping
Cold air cools down, and obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, by right
Carbon fiber carry out pretreatment, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation,
Solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 1, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 84 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness is 6-10%.
Embodiment 2
First, 400g is weighed as EEW, 100g 2 type BPA100g of modified epoxy, 100g as phenols curing agent
G-92,50g of 1 as phenols curing agent 2 G-151,10g as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst,
2g base catalyst, 10g wax powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then warp
Cross Blowing stopper cooling, obtain tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, makes in secondary process of lapping
With heat exchanger conveying cold air cooling, obtain fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect
Finished product.Secondly, by carbon fiber is carried out pretreatment, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, at hot blast
In the curing oven of circulation, solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 2, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 85 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
Embodiment 3
First, 300g is weighed as EEW, 200g 2.5 type BPA of modified epoxy, 100g as phenols curing agent 1
G-92,50g as G-151,10g of phenols curing agent 2 as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g
Base catalyst, 10g wax powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then pass through
Blowing stopper cools down, and obtains tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses in secondary process of lapping
Heat exchanger conveying cold air cooling, obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect
Product.Secondly, by carbon fiber is carried out pretreatment, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, follow at hot blast
In the curing oven of ring, solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 3, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 82 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
The pure epoxy system low-temperature setting flatting coating composition of table 1 embodiment 1-3 and coating material thereof
Embodiment 4
First, 500g2 type BPA, 100g are weighed as G-92,50g of phenols curing agent 1 as the G-of phenols curing agent 2
151,10g is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax powder (PE-520), 300g
Titanium dioxide is put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper, obtain tabletting material；Obtain
Tabletting material obtains fine powder through twice attrition grinding, uses heat exchanger conveying cold air cooling, obtain in secondary process of lapping
Fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, carbon fiber will be carried out pre-place
Reason, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation, solidify at 120 DEG C
15 minutes, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 1, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 88 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
Embodiment 5
First, 500g 4 type BPA, 100g are weighed as G-91,50g of phenols curing agent 1 as the G-of phenols curing agent 2
152,10g is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax powder (PE-520), 300g
Titanium dioxide is put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper, obtain tabletting material；Obtain
Tabletting material obtains fine powder through twice attrition grinding, uses heat exchanger conveying cold air cooling, obtain in secondary process of lapping
Fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, carbon fiber will be carried out pre-place
Reason, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation, solidify at 120 DEG C
15 minutes, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 1, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 84 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 6-7, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
Embodiment 6
First, 500g EEW, 100g as modified epoxy is weighed as G-91,50g conduct of phenols curing agent 1
G-154,10g of phenols curing agent 2 is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax
Powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper,
To tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses heat exchanger conveying in secondary process of lapping
Cold air cools down, and obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, by right
Carbon fiber carry out pretreatment, at 60 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation,
Solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 1, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 84 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
The pure epoxy system low-temperature setting flatting coating composition of table 2 embodiment 4-6 and coating material thereof
Embodiment 7
First, 500g EEW, 100g as modified epoxy is weighed as G-92,50g conduct of phenols curing agent 1
G-151,10g of phenols curing agent 2 is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax
Powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper,
To tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses heat exchanger conveying in secondary process of lapping
Cold air cools down, and obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, by right
Carbon fiber carry out pretreatment, at 40 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation,
Solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 7, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 84 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 6-7, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
Embodiment 8
First, 500g EEW, 50g as modified epoxy is weighed as G-91,25g of phenols curing agent 1 as phenol
G-152,10g of class firming agent 2 is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax powder
(PE-520), 300g titanium dioxide is put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper, obtain
Tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses heat exchanger conveying cold in secondary process of lapping
Air cools down, and obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, will be to carbon
Fiber carry out pretreatment, at 40 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation,
Solidify 15 minutes at 120 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 8, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 70 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 30-50%.
Embodiment 9
First, 500g EEW, 100g as modified epoxy is weighed as G-91,50g conduct of phenols curing agent 1
G-154,10g of phenols curing agent 2 is as PL-200,3g Benzoinum of levelling agent, 5g acid catalyst, 2g base catalyst, 10g wax
Powder (PE-520), 300g titanium dioxide are put in mixing tank；After melt extruder coextrusion, then cool down through Blowing stopper,
To tabletting material；The tabletting material obtained obtains fine powder through twice attrition grinding, uses heat exchanger conveying in secondary process of lapping
Cold air cools down, and obtains fine powder；After being separated by cyclone separator, then sieved by screen cloth, detect to obtain finished product.Secondly, by right
Carbon fiber carry out pretreatment, at 90 DEG C sprayed coating compositions on the carbon fiber of pretreatment, in the curing oven of hot air circulation,
Solidify 15 minutes at 130 DEG C, thus the coating material obtained.
Obtaining coating material according to the method for embodiment 9, visual observations outward appearance then surface is without flaws such as shrinkage cavity, pinprick, granules
Defect, non yellowing, film is 84 DEG C, pencil hardness with the glass transition temperature that the heating rate of TA Q-20,20 DEG C/min obtains
(ASTM D3363:2005) is 1H-2H, and levelling grade (U.S. PCI levelling classification standard) is 7-8, thickness (ISO 2808) is
70-90um, glossiness position 6-10%.
The pure epoxy system low-temperature setting flatting coating composition of table 3 embodiment 7-9 and coating material thereof
By the present invention, solve the problem that the primary coat for carbon fiber base material is applied: 1. realize low-temperature fast-curing,
At 120 DEG C, 15min completes；2. the scope of one-pass film-forming thickness 70～90um；3. levelling is good, PCI grade more than 7 grades；4. hardness
Height, pencil hardness 1～more than 2H；5. there is good storage stability, i.e. can preserve under the conditions of 25 DEG C more than 28 days,
And there is not conglomeration, powder flowbility is good；6. glossiness is 6～8%.
Those skilled in the art it should be appreciated that the present invention is not restricted to the described embodiments, above-described embodiment and
The principle of the simply present invention described in description, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements both fall within scope of the claimed invention.
Claims (10)
1. a carbon fiber base material delustring low-cure coating composition, wherein, comprises 2 types to 4 types BPA or phenol aldehyde modified ring
Epoxy resins, phenols curing agent compositions, catalyst.
Carbon fiber base material delustring low-cure coating composition the most according to claim 1, wherein, described 2 types are to 4 types
BPA or phenol aldehyde modified epoxy resin is, 25 DEG C of solution viscosities are more than 230mPa s, epoxide equivalent is more than 252g/eq., soft
Change the resin that point is more than 82 DEG C.
Carbon fiber base material delustring low-cure coating composition the most according to claim 1, wherein, described phenolic cure
Agent compositions be in G-92, G-91 at least one phenols curing agent 1 and in G-151, G-152, G-154 at least one
The mixture of phenols curing agent 2, and phenols curing agent 1: the mass ratio 2: 1 of phenols curing agent 2.
Delustring low-temperature setting flat paint compositions the most according to claim 1, wherein, lewis acid and lewis base connection
Close the amount of catalyst with molar ratio computing for 1: 1, and relative to the compositions of 100 mass %, be 0.5～3 mass %.
Delustring low-temperature setting flat paint compositions the most according to claim 1, wherein, the granularity of coating composition is,
D50 is in the range of 25-50um.
6., according to carbon fiber base material delustring low-cure coating composition according to claim 1, wherein, also include face
Material and or filler.
7. a carbon fiber base material delustring low temperature solidification coating material, it is characterised in that use in claim 1 to 6 arbitrary
Delustring low-cure coating composition described in Xiang is prepared from.
Delustring low temperature solidification coating material the most according to claim 7, its coating below 120 DEG C at a temperature of solidify 10
～15 minutes.
9. according to the delustring low temperature solidification coating material described in claim 7 or 8, it is characterised in that the thick coating of primary coating
Degree is more than 100um.
10. the preparation method of a delustring low temperature solidification coating material, it is characterised in that use the delustring described in claim 1
Prepared by low-cure coating composition, it comprises the following steps: the surface pre-treatment step of carbon fiber board, melt extrude step,
Spraying process at a temperature of 40 DEG C～90 DEG C, below 120 DEG C at a temperature of solidify the curing schedule of 10～15 minutes.
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| CN101608091A (en) * | 2009-07-07 | 2009-12-23 | 宁波市派特勒粉末涂料有限公司 | Low-temperature setting heavy-duty anticorrosion powder coating |
| JP2012052051A (en) * | 2010-09-02 | 2012-03-15 | Asahi Kasei E-Materials Corp | Curing agent composition for epoxy resin and one-pack epoxy resin composition |
| CN102643595A (en) * | 2012-04-27 | 2012-08-22 | 天津翔盛粉末涂料有限公司 | Fired epoxy powder coating special for hot rolling coating of large-caliber steel pipes |
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Application publication date: 20161130 |