CN109354987A - Surface drying time is moderate, is adapted to Polyaspartic Polyurea coating, preparation method, application method and the application of environmental change - Google Patents
Surface drying time is moderate, is adapted to Polyaspartic Polyurea coating, preparation method, application method and the application of environmental change Download PDFInfo
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/60—Polyamides or polyester-amides
- C08G18/603—Polyamides
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- 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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K2003/327—Aluminium phosphate
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Abstract
The invention belongs to spray polyurea elastic material technical fields, disclose the Polyaspartic Polyurea coating that a kind of surface drying time is moderate, is adapted to environmental change, mainly be prepared from the following materials: including A material and B material, the mole ratio of NH is 1.05-1.1 in NCO and B material in the A material；The A material is mainly prepared by the raw material of following weight percent: polyether polyol 25-44%, aliphatic polyisocyante 55-74% and nano graphene oxide 1-5%；The B material is mainly prepared by the raw material of following weight percent: polyaspartic ester 70-80%, nano-metal-oxide filler 10-15%, pigments and fillers 5-10%, defoaming agent 1-3%, levelling agent 1-3% and adhesion promoter 2-5%.The present invention also provides preparation method, application method and the applications of aforementioned Polyaspartic Polyurea coating.The advantages of Polyaspartic Polyurea coating provided by the invention, is, is easy to brush, and surface drying time is moderate, is adapted to environmental change.
Description
Technical field
The invention belongs to spray polyurea elastic material technical fields, and in particular to a kind of surface drying time is moderate, is adapted to
Polyaspartic Polyurea coating, preparation method, application method and the application of environmental change.
Background technique
Spray polyurea elastic material is the coating production of domestic and international a kind of response type developed in recent years, solvent-free pollution
Product, since the advent of the world sufficiently show it in waterproof skill just with excellent physicochemical property, excellent public welfare and the feature of environmental protection
The advantage in art field has obtained swift and violent development with its unrivaled superiority.Carbamide paint is hydrophobicity and autocatalysis
, with preferable physical and mechanical property, tensile strength, wear-resisting property, impact resistance, chemical corrosion resistance and waterproofness
Energy.
Carbamide paint elastomer coatings can be realized different anti-by selecting suitable isocyanate prepolymer composition and amino group
System is answered, wherein quick-reaction system can be used for needing the position of rapid shaping, reinforcement, reparation, and slow reaction system is suitable for
Various sealings and joint filling.Carbamide paint intensity is high, good toughness, can functionalization, thus have in dual-use field and widely answer
Use prospect.
Coating property determines that the protection effect of coating should have following advantages: machine in the protective coating that corrosion-resistant field uses
Tool performance is good, and resistance of rainwater washing against collision even rubs；Stability is good, acidproof alkali salt, chemicals-resistant, oil resistant, ageing-resistant and resistance to
Imparted energy；Adhesive force is strong, has stronger adhesive force and adhesive property with substrate；It easily constructs, is environmentally protective.In addition, right
Shielding, hydrophobicity, resistance to soiling and the service life etc. of coating also have certain requirement.
Polyurea elastomer coating is generated by amino-compound and isocyanates reaction, is chiefly used in Offshore Bridges anti-corrosion.Previous generation
The end of the eighties record by American R & D success, because of excellent performance, is worldwide used widely, is after high solid, powder
Last coating, water paint, after photocureable coating etc., the pure polyurea elastomer of the two-component that is novel, efficient, easily brushing of exploitation is applied
Material.This high thick film elastomer coatings feature is obvious: solid content is high, environmentally protective, applies film thickness and densification is flexible, attached with substrate
Put forth effort by force, resistance to ultraviolet, impact resistance etc. is had excellent performance, easy construction.It adds different amounts of polyurea elastomer to be studied, shows to work as
When polyureas content molar fraction reaches 50%, the self assembly effect that hydrogen bond causes increases the crystallinity of copolymer, and coating is corrosion-resistant
Property enhancing, surface can reduce.Pure polyureas anticorrosive paint coating, is exposed aging in artificial naval air environment, with red
The test performances such as external spectrum, DSC, the mechanicalness of coating, ultra-violet resistance are good, stable structure, excellent anti-corrosion performance.
Although polyurea elastomer coating has above-mentioned advantage, there are also defects, and it to be hindered to apply and develop: as solidified
Excessive velocities, interlayer adhesion force is poor, and high temperature resistant and corrosion resistance are applied not as good as fluorocarbon coating etc., these defects and spray polyurea waterproof
Main film forming substance and its preparation process in material have outside the Pass, also related to added auxiliary agent type.In addition, polyurea elastomer
The spraying of coating is very advanced technology, and quality, the technology of construction personnel is also the reason of influencing its performance；Secondly, main former
Material and spraying equipment need import to cause cost very high, and restrict a major reason of China's polyurea elastomer paint development.
Summary of the invention
In order to solve the above problems existing in the present technology, it is poly- that it is an object of that present invention to provide a kind of polyaspartic esters
Urea coating, Polyaspartic Polyurea coating surface drying time is moderate for this, is adapted to environmental change and adapts to more answer
With the occasion of the coating, meanwhile, the present invention also provides the preparation methods of the Polyaspartic Polyurea coating, application method
And application.
The technical scheme adopted by the invention is as follows:
A kind of surface drying time is moderate, is adapted to the Polyaspartic Polyurea coating of environmental change, mainly by following
Raw material is prepared: including A material and B material, the mole ratio of NH is 1.05-1.1 in NCO and B material in the A material；
The A material is mainly prepared by the raw material of following weight percent: polyether polyol 25-44%, aliphatic are more
Isocyanates 55-74% and nano graphene oxide 1-5%；
The B material is mainly prepared by the raw material of following weight percent: polyaspartic ester 70-80%, nanometer
Metal oxide filler 10-15%, pigments and fillers 5-10%, defoaming agent 1-3%, levelling agent 1-3%, adhesion promoter 2-5%.
Specifically, aforementioned Polyaspartic Polyurea coating, the polyaspartic ester is by aliphatic diamine and horse
Carry out acid esters to be prepared, the aliphatic diamine be isophorone diamine, dicyclohexylmethane diamine, 1,6- hexamethylene diamine or 3,
One or more of 3 '-dimethyl, 4,4 '-dicyclohexylmethane diamine, the maleate are diethyl maleate, Malaysia
One or more of dimethyl phthalate, dibutyl maleate.
Specifically, aforementioned Polyaspartic Polyurea coating, the polyether polyol is polytetrahydrofuran dihydric alcohol, gathers
The one or more of tetrahydrofuran trihydroxylic alcohol, polyethylene glycol dihydric alcohol or polyethylene glycol trihydroxylic alcohol.
Specifically, aforementioned Polyaspartic Polyurea coating, the aliphatic polyisocyante is that isophorone two is different
Cyanate, hexamethylene diisocyanate, hexamethylene diisocyanate trimer, cyclohexanedimethyleterephthalate isocyanates or 4,
One or more of 4- dicyclohexyl methyl hydride diisocyanate.
Specifically, aforementioned Polyaspartic Polyurea coating, the nano-metal-oxide filler is nanometer titanium dioxide
Titanium and/or nano ferriferrous oxide.
Specifically, aforementioned Polyaspartic Polyurea coating, the pigments and fillers are aluminium dihydrogen tripolyphosphate, modified silicon is micro-
One or more of powder, barium sulfate, talcum powder or kaolin.
A kind of preparation method of aforementioned Polyaspartic Polyurea coating, includes the following steps:
(1) polyether polyol, aliphatic polyisocyante and nano graphene oxide are weighed according to quantity, is stirred and evenly mixed, and are heated up
After react, obtain A material；
(2) aliphatic diamine is weighed according to quantity, is heated up, diethyl maleate is added, and poly-aspartic-acid is made in insulation reaction
Ester；
(3) polyaspartic ester obtained in step (2) is weighed according to quantity, is preheated, and preheating polyaspartic ester is obtained；
(4) nano-metal-oxide filler, pigments and fillers, defoaming agent, levelling agent and adhesion promoter are weighed according to quantity respectively,
It adds in preheating polyaspartic ester, high speed dispersion, obtains B material；
(5) by the A material and B material according to A expect in NCO and the B material in NH mole ratio be 1.05-1.1 mix, i.e.,
Obtain the Polyaspartic Polyurea coating.
Specifically, the preparation method, it is warming up to 70-90 DEG C in the step (1), the reaction time is 8-16h after heating；
70-90 DEG C is warming up in the step (2), the adding manner of the diethyl maleate is to be added dropwise, the diethyl maleate
Time for adding be 28-32min, the reaction temperature of the insulation reaction is 84-86 DEG C, and the reaction time of the insulation reaction is
22-26h；The temperature preheated in the step (3) is 48-52 DEG C；NCO molar content accounts in A material in A material in the step (5)
The 10-15% of the total moles of all reaction substrates.
A kind of application method of aforementioned Polyaspartic Polyurea coating, by the Polyaspartic Polyurea coating
It is coated on prime coat or floating coat by roller coating, brushing or spraying method, the use of the Polyaspartic Polyurea coating
Amount is 0.15kg/m2。
A kind of aforementioned Polyaspartic Polyurea coating is applied preparing bridge, outdoor architecture, concrete and furniture decoration
Application in material.
The invention has the benefit that
Since the carbamide paint that aromatic compound is raw material is easy to aging, and weather resistance is poor, uses instead in the present invention
Polyurea waterproof coating material is prepared as raw material in aliphatic polyisocyante, and the light that can effectively improve polyurea waterproof coating material is steady
Qualitative and weather resistance, makes coating while with waterproof performance, has excellent anti-yellowing property and antifouling, anticorrosive property
Energy.Meanwhile aliphatic diamine and maleate being selected to prepare polyaspartic ester, guaranteeing coating with low viscosity, easily spray
On the basis of applying performance, the wetability of carbamide paint is further improved, to keep curing rate moderate, the construction time extends.
Meanwhile polyaspartate polyurea coating system reaction speed provided by the invention is slower, gel time is longer, and biography can be used
The static mixing Two-component spray equipment that the spraying equipment of system is constructed without purchasing price valuableness, it is simple to operation, just
In popularization.
Specific embodiment
Further explaination is done to the present invention combined with specific embodiments below.
Embodiment 1
The purpose of the present embodiment is that providing the poly-aspartic-acid that a kind of surface drying time is moderate, is adapted to environmental change
Ester carbamide paint, specifically includes the following steps:
(1) preparation of A material:
By weight percentage, weigh 25% polytetrahydrofuran dihydric alcohol, 74% isophorone diisocyanate and
1% nano graphene oxide is added in the there-necked flask equipped with blender, heating apparatus and condenser, after being warming up to 70 DEG C of mixing
12h is reacted, and measures NCO content, the molal quantity for synthesizing NCO is 10% performed polymer of reaction substrate total moles；
(2) preparation of B component:
The isophorone diamine of respective component is weighed, is added in the there-necked flask equipped with blender, heating apparatus and condenser,
70 DEG C are warming up to, the diethyl maleate of respective component, time for adding 30min is added dropwise, for 24 hours, poly- day is made in 85 DEG C of insulation reactions
L-aminobutanedioic acid ester；Weigh 70% polyaspartic ester and be preheating to 50 DEG C, then weigh respectively 30% component filler mixture and
Auxiliary agent (including nano-titanium dioxide 10%, aluminium dihydrogen tripolyphosphate 10%, defoaming agent 3%, levelling agent 3%, adhesion promoter
4%) it, is added into preheated polyaspartic ester, obtains B material；High speed dispersion is carried out, A material and B after being dispersed
Material.
(3) preparation of Polyaspartic Polyurea coating:
The scattered A material and B material are mixed according to NCO content and NH content mole ratio 1.05, obtain poly- Tianmen
Aspartic acid ester carbamide paint.
Embodiment 2
The purpose of the present embodiment is that providing the poly-aspartic-acid that a kind of surface drying time is moderate, is adapted to environmental change
Ester carbamide paint, specifically includes the following steps:
(1) preparation of A material:
By weight percentage, weigh 30% polytetrahydrofuran trihydroxylic alcohol, 67% hexamethylene diisocyanate and
3% nano graphene oxide is added in the there-necked flask equipped with blender, heating apparatus and condenser, after being warming up to 75 DEG C of mixing
8h is reacted, and measures NCO content, the molal quantity for synthesizing NCO is 15% performed polymer of reaction substrate total moles；
(2) preparation of B component:
The dicyclohexylmethane diamine of respective component is weighed, three mouthfuls equipped with blender, heating apparatus and condenser are added
In bottle, 75 DEG C are warming up to, the diethyl maleate of respective component, time for adding 30min is added dropwise, 85 DEG C of insulation reactions for 24 hours, are made
Obtain polyaspartic ester；Weigh 80% polyaspartic ester and be preheating to 50 DEG C, then weigh respectively 20% component filler it is mixed
Close object and auxiliary agent (including nano-titanium dioxide 11%, modified silicon powder 5%, defoaming agent 1, levelling agent 1%, adhesion promoter
2%) it, is added into preheated polyaspartic ester, obtains B material；High speed dispersion is carried out, A material and B after being dispersed
Material.
(3) preparation of Polyaspartic Polyurea coating:
The scattered A material and B material are mixed according to NCO content and NH content mole ratio 1.05, obtain poly- Tianmen
Aspartic acid ester carbamide paint.
Embodiment 3
The purpose of the present embodiment is that providing the poly-aspartic-acid that a kind of surface drying time is moderate, is adapted to environmental change
Ester carbamide paint, specifically includes the following steps:
(1) preparation of A material:
By weight percentage, 35% polyethylene glycol dihydric alcohol, 60% hexamethylene diisocyanate trimerization are weighed
Body and 5% nano graphene oxide are added in the there-necked flask equipped with blender, heating apparatus and condenser, be warming up to 80 DEG C it is mixed
14h is reacted after conjunction, and measures NCO content, and the molal quantity for synthesizing NCO is 10% performed polymer of reaction substrate total moles；
(2) preparation of B component:
1, the 6- hexamethylene diamine of respective component is weighed, is added in the there-necked flask equipped with blender, heating apparatus and condenser, rises
The diethyl maleate of respective component, time for adding 30min is added dropwise to 80 DEG C in temperature, and for 24 hours, poly- Tianmen is made in 85 DEG C of insulation reactions
Aspartic acid ester；It weighs 76% polyaspartic ester and is preheating to 50 DEG C, then weigh the filler mixture of 24% component respectively and help
Agent (including nano-titanium dioxide 15%, barium sulfate 5%, defoaming agent 1%, levelling agent 1%, adhesion promoter 2%) is added extremely
In preheated polyaspartic ester, B material is obtained；High speed dispersion is carried out, A material and B material after being dispersed.
(3) preparation of Polyaspartic Polyurea coating:
The scattered A material and B material are mixed according to NCO content and NH content mole ratio 1.05, obtain poly- Tianmen
Aspartic acid ester carbamide paint.
Embodiment 4
The purpose of the present embodiment is that providing the poly-aspartic-acid that a kind of surface drying time is moderate, is adapted to environmental change
Ester carbamide paint, specifically includes the following steps:
The preparation of A material:
By weight percentage, 44% polyethylene glycol trihydroxylic alcohol, 51% cyclohexanedimethyleterephthalate isocyanates are weighed
Nano graphene oxide with 5% is added in the there-necked flask equipped with blender, heating apparatus and condenser, is warming up to 90 DEG C of mixing
After react 16h, and measure NCO content, the molal quantity for synthesizing NCO is 10% performed polymer of reaction substrate total moles；
The preparation of B component:
The 3 of respective component are weighed, 3 '-dimethyl, 4,4 '-dicyclohexylmethane diamine is added equipped with blender, heating dress
It sets in the there-necked flask with condenser, is warming up to 90 DEG C, be added dropwise the diethyl maleate of respective component, time for adding 30min, 85 DEG C
For 24 hours, polyaspartic ester is made in insulation reaction；It weighs 72% polyaspartic ester and is preheating to 50 DEG C, then weigh respectively
Filler mixture and auxiliary agent (including nano ferriferrous oxide 13%, talcum powder 8%, the defoaming agent 2%, levelling agent of 28% component
2%, adhesion promoter 3%), it is added into preheated polyaspartic ester, obtains B material；High speed dispersion is carried out, is obtained
A material and B material after dispersion.
(3) preparation of Polyaspartic Polyurea coating:
The scattered A material and B material are mixed according to NCO content and NH content mole ratio 1.05, obtain poly- Tianmen
Aspartic acid ester carbamide paint.
Embodiment 5
The purpose of the present embodiment is that providing the poly-aspartic-acid that a kind of surface drying time is moderate, is adapted to environmental change
Ester carbamide paint, specifically includes the following steps:
The preparation of A material:
By weight percentage, 43% polyethylene glycol trihydroxylic alcohol, 54% 4,4- dicyclohexyl methyl hydride, two isocyanide are weighed
Acid esters and 3% nano graphene oxide be added equipped with blender, heating apparatus and condenser there-necked flask in, be warming up to 80 DEG C
13h is reacted after mixing, and measures NCO content, and the molal quantity for synthesizing NCO is 15% performed polymer of reaction substrate total moles；
The preparation of B component:
The 3 of respective component are weighed, 3 '-dimethyl, 4,4 '-dicyclohexylmethane diamine is added equipped with blender, heating dress
It sets in the there-necked flask with condenser, is warming up to 80 DEG C, be added dropwise the diethyl maleate of respective component, time for adding 30min, 85 DEG C
For 24 hours, polyaspartic ester is made in insulation reaction；It weighs 70% polyaspartic ester and is preheating to 50 DEG C, then weigh respectively
Filler mixture and auxiliary agent (including nano ferriferrous oxide 12%, kaolin 8%, the defoaming agent 2%, levelling agent of 30% component
3%, adhesion promoter 5%), it is added into preheated polyaspartic ester, obtains B material；High speed dispersion is carried out, is obtained
A material and B material after dispersion.
(3) preparation of Polyaspartic Polyurea coating:
The scattered A material and B material are mixed according to NCO content and NH content mole ratio 1.05, obtain poly- Tianmen
Aspartic acid ester carbamide paint.
Maleate in the present invention in addition to diethyl maleate, can also be diethyl maleate, dimethyl maleate,
One or more of dibutyl maleate.In addition, the aliphatic diamine used in the present invention, polyether polyol, aliphatic
Polyisocyanates, nano-metal-oxide filler and pigments and fillers are not limited to the monoreactant in embodiment 1-5, are also possible to
One or more of aforementioned list raw material, if pigments and fillers are aluminium dihydrogen tripolyphosphate, modified silicon powder, barium sulfate, talcum powder
Or one or more of kaolin.
The specifying informations such as Polyaspartic Polyurea coating provided by the invention raw materials used No. CAS or article No. are such as
Under:
Aliphatic diamine: isophorone diamine (CAS No.2855-13-2), dicyclohexylmethane diamine, 1,6- oneself two
Amine (CAS No.124-09-4) or 3,3 ' -4,4 '-dicyclohexylmethane diamine of dimethyl (CAS No.6864-37-5)；
Maleate: diethyl maleate (CAS No.141-05-9), dimethyl maleate (CAS No.624-48-6),
Dibutyl maleate (CAS No.105-76-0)；
Polyether polyol: polytetrahydrofuran dihydric alcohol, polytetrahydrofuran trihydroxylic alcohol, polyethylene glycol dihydric alcohol or polyethylene glycol
Trihydroxylic alcohol (Jining Hua Kai resin Co., Ltd)；
Aliphatic polyisocyante: isophorone diisocyanate (CAS No.4098-71-9), two isocyanide of hexa-methylene
Acid esters (CAS No.822-06-0), hexamethylene diisocyanate trimer, cyclohexanedimethyleterephthalate isocyanates or 4,4- bis-
Diphenylmethane diisocyanate (Shenzhen Jinhua sage Chemical Co., Ltd.)；
Nano-metal-oxide filler: (Ningbo gold thunder nano material science and technology has for nano-titanium dioxide, nano ferriferrous oxide
Limit company).
Pigments and fillers: aluminium dihydrogen tripolyphosphate (CAS No.17375-35-8), modified silicon powder, barium sulfate (CAS
No.7727-43-7), talcum powder (CAS No.14807-96-6) or kaolin (CAS No.52624-41-6)；
Defoaming agent (Sichuan Carpoly Paint Co., Ltd.), levelling agent (Sichuan Carpoly Paint Co., Ltd.), adhesive force
Promotor, (Sichuan Carpoly Paint Co., Ltd.).
Effect example 1
With 1,6- hexamethylene diamine, dicyclohexylmethane diamine, 3,3 ' -4,4 '-dicyclohexylmethane diamine of dimethyl, different Fo Er
Ketone diamines reacts to obtain 4 kinds of polyaspartic esters 1#, 2#, 3# and 4# respectively with diethyl maleate, by obtained poly- day
L-aminobutanedioic acid ester 1#, 2#, 3# and 4# is mixed with other components in B material, obtains four kinds of different B material；The molal quantity of NCO in A material
It is the 10% of reaction substrate total moles；A is expected that the B material different from four kinds is reacted by mole ratio NCO/NH=1.05 again, is used
Stopwatch measures its gel time and surface drying time, result such as table 1:
The gel time and surface drying time of Polyaspartic Polyurea coating in 1 effect example 1 of table
| Polyureas type | Gel time (25 DEG C)/min | Surface drying time (25 DEG C)/min |
| 1# | 0.5~1 | 2~3 |
| 2# | 45~60 | 120~180 |
| 3# | 60~90 | 180~240 |
| 4# | 5~10 | 20~30 |
Effect example 2
With 1,6- hexamethylene diamine, dicyclohexylmethane diamine, 3,3 ' -4,4 '-dicyclohexylmethane diamine of dimethyl, different Fo Er
Ketone diamines reacts to obtain 4 kinds of polyaspartic esters 1#, 2#, 3# and 4# respectively with diethyl maleate, by obtained poly- day
L-aminobutanedioic acid ester 1#, 2#, 3# and 4# is mixed with other components in B material, obtains four kinds of different B material, the molal quantity of NCO in A material
It is the 15% of reaction substrate total moles；A is expected that the B material different from four kinds is reacted by mole ratio NCO/NH=1.05 again, is used
Stopwatch measures its gel time and surface drying time, result such as table 2:
The gel time and surface drying time of Polyaspartic Polyurea coating in 2 effect example 2 of table
| Polyureas type | Gel time (25 DEG C)/min | Surface drying time (25 DEG C)/min |
| 1# | 0.5~1 | 2~3 |
| 2# | 45~60 | 120~180 |
| 3# | 60~90 | 180~240 |
| 4# | 5~10 | 20~30 |
Effect example 3
With 1,6- hexamethylene diamine, dicyclohexylmethane diamine, 3,3 ' -4,4 '-dicyclohexylmethane diamine of dimethyl, different Fo Er
Ketone diamines reacts to obtain 4 kinds of polyaspartic esters 1#, 2#, 3# and 4# respectively with diethyl maleate, by obtained poly- day
L-aminobutanedioic acid ester 1#, 2#, 3# and 4# is mixed with other components in B material, obtains four kinds of different B material, the molal quantity of NCO in A material
It is the 10% of reaction substrate total moles；A is expected that the B material different from four kinds is reacted by mole ratio NCO/NH=1.1 again, is used
Stopwatch measures its gel time and surface drying time, result such as table 3:
The gel time and surface drying time of Polyaspartic Polyurea coating in 3 effect example 3 of table
| Polyureas type | Gel time (25 DEG C)/min | Surface drying time (25 DEG C)/min |
| 1# | 0.5~1 | 2~3 |
| 2# | 45~60 | 120~180 |
| 3# | 60~90 | 180~240 |
| 4# | 5~10 | 20~30 |
Wherein, the polyether polyol in the component A in effect example 1~3 can be polytetrahydrofuran dihydric alcohol, poly- tetrahydro furan
It mutters trihydroxylic alcohol, polyethylene glycol dihydric alcohol or polyethylene glycol trihydroxylic alcohol, the aliphatic polyisocyante in component A can be different Fo Er
Ketone diisocyanate, hexamethylene diisocyanate, hexamethylene diisocyanate trimer, cyclohexanedimethyleterephthalate isocyanic acid
Ester or 4,4- dicyclohexyl methyl hydride diisocyanate.By the result in effect example 1~3 it is found that selecting different aliphatic diamines
Coating is prepared, the gel time and surface drying time variation range of gained coating are larger, are suitable for most of service condition.
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention
The product of kind form.Above-mentioned specific embodiment should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention
Range should be subject to be defined in claims, and specification can be used for interpreting the claims.
Claims (10)
1. a kind of surface drying time is moderate, is adapted to the Polyaspartic Polyurea coating of environmental change, which is characterized in that main
Be prepared from the following materials: including A material and B material, the mole ratio of NH is 1.05- in NCO and B material in the A material
1.1；
The A material is mainly prepared by the raw material of following weight percent: polyether polyol 25-44%, aliphatic polyisocyanate cyanogen
Acid esters 55-74% and nano graphene oxide 1-5%；
The B material is mainly prepared by the raw material of following weight percent: polyaspartic ester 70-80%, nano metal
Oxide filler 10-15%, pigments and fillers 5-10%, defoaming agent 1-3%, levelling agent 1-3% and adhesion promoter 2-5%.
2. Polyaspartic Polyurea coating according to claim 1, it is characterised in that: the polyaspartic ester
Be prepared by aliphatic diamine and maleate, the aliphatic diamine be isophorone diamine, dicyclohexylmethane diamine,
1,6- hexamethylene diamine or 3, one or more of 3 '-dimethyl, 4,4 '-dicyclohexylmethane diamine, the maleate are Malaysia
One or more of diethyl phthalate, dimethyl maleate, dibutyl maleate.
3. Polyaspartic Polyurea coating according to claim 1, it is characterised in that: the polyether polyol is poly-
The one or more of tetrahydrofuran dihydric alcohol, polytetrahydrofuran trihydroxylic alcohol, polyethylene glycol dihydric alcohol or polyethylene glycol trihydroxylic alcohol.
4. Polyaspartic Polyurea coating according to claim 1, it is characterised in that: the aliphatic polyisocyanic acid
Ester is isophorone diisocyanate, hexamethylene diisocyanate, hexamethylene diisocyanate trimer, two Asia of hexamethylene
One or more of methyl isocyanate or 4,4- dicyclohexyl methyl hydride diisocyanate.
5. Polyaspartic Polyurea coating according to claim 1, it is characterised in that: the nano-metal-oxide
Filler is nano-titanium dioxide and/or nano ferriferrous oxide.
6. Polyaspartic Polyurea coating according to claim 1, it is characterised in that: the pigments and fillers are trimerization phosphorus
One or more of acid dihydride aluminium, modified silicon powder, barium sulfate, talcum powder or kaolin.
7. a kind of preparation method of the Polyaspartic Polyurea coating according to claim 2-6 any one, special
Sign is, includes the following steps:
(1) polyether polyol, aliphatic polyisocyante and nano graphene oxide are weighed according to quantity, are stirred and evenly mixed, it is anti-after heating
It answers, obtains A material；
(2) aliphatic diamine is weighed according to quantity, is heated up, diethyl maleate is added, and polyaspartic ester is made in insulation reaction；
(3) polyaspartic ester obtained in step (2) is weighed according to quantity, is preheated, and preheating polyaspartic ester is obtained；
(4) nano-metal-oxide filler, pigments and fillers, defoaming agent, levelling agent and adhesion promoter are weighed according to quantity respectively, is added to
It preheats in polyaspartic ester, high speed dispersion, obtains B material；
(5) by A material and B material according to A expect in NCO and the B material mole ratio of NH be 1.05-1.1 mixing to get arriving
The Polyaspartic Polyurea coating.
8. preparation method according to claim 7, it is characterised in that: be warming up to 70-90 DEG C in the step (1), heating
The reaction time is 8-16h afterwards；70-90 DEG C is warming up in the step (2), the adding manner of the diethyl maleate is drop
Add, the time for adding of the diethyl maleate is 28-32min, and the reaction temperature of the insulation reaction is 84-86 DEG C, described
The reaction time of insulation reaction is 22-26h；The temperature preheated in the step (3) is 48-52 DEG C；A expects in the step (5)
Middle NCO molar content accounts for the 10-15% of the total moles of all reaction substrates in A material.
9. a kind of application method of Polyaspartic Polyurea coating described in -6 any one according to claim 1, special
Sign is: the Polyaspartic Polyurea coating is coated on prime coat or middle painting by roller coating, brushing or spraying method
On layer, the dosage of the Polyaspartic Polyurea coating is 0.15kg/m2。
10. Polyaspartic Polyurea coating described in a kind of -6 any one according to claim 1 is preparing bridge, outdoor
Application in building, concrete and furniture decoration coating.
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