CN106433401A - Waterbome epoxy resin primer with long-term high corrosion resistance for steel structure and preparation method of primer - Google Patents
Waterbome epoxy resin primer with long-term high corrosion resistance for steel structure and preparation method of primer Download PDFInfo
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- CN106433401A CN106433401A CN201610901144.3A CN201610901144A CN106433401A CN 106433401 A CN106433401 A CN 106433401A CN 201610901144 A CN201610901144 A CN 201610901144A CN 106433401 A CN106433401 A CN 106433401A
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- parts
- cardanol
- attapulgite
- epoxy resin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/64—Amino alcohols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Epoxy Resins (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a waterbome epoxy resin primer with long-term high corrosion resistance for a steel structure. The primer is prepared from, by weight, 50-70 parts of epoxy resin, 15-20 parts of cardanol, 15-25 parts of a formaldehyde solution, 17-24 parts of isophorondiamine, 2-3 parts of KH50, 3-7 parts of attapulgite, an appropriate amount of a hydrochloric acid solution with the concentration being 1 mol/L, 0.8-1.5 parts of benzyl triethyl ammonium chloride, 16-20 parts of a 30% sodium hydroxide solution, an appropriate amount of deionized water, 1-2 parts of stearamide, 1-4 parts of epoxy diluent, 2-5 parts of zinc phosphate, 2-5 parts of aluminum triphosphate and 1-3 parts of zinc yellow. According to the waterbome epoxy resin primer with the long-term high corrosion resistance for the steel structure, silicon hydroxyl on the surface of the attapulgite and cardanol are utilized to generate an etherifying and cross-linking reaction, a modified cardanol aldehyde amine curing agent is prepared through a chemical reaction, the modified curing agent not only has the advantage of an ordinary cardanol aldehyde amine curing agent but also has the advantage of the attapulgite, and the prepared paint has the advantages of being good in yellowing resistance, capable of curing at low temperature and excellent in corrosion resistance.
Description
Technical field
The invention belongs to paint field, particularly to a kind of steel construction with having the water-base epoxy bottom of high antiseptic property for a long time
Paint and preparation method thereof.
Background technology
Countries in the world coating industry steps up the research of the environment-friendly type coating to low VOC emission, water-based anticorrosive paint in recent years
Greatly reduce and even completely eliminated VOC emission, and safe and convenient to use, to develop rapidly.Mono-component aqueous anticorrosive paint
Using base material polymer emulsion mostly be thermoplastics type, the performance difficult to reach solvent-borne type work such as hardness of film, resistance to medium, anti-pollution
Industry Coating levels.Thus people start to be devoted to the research of bi-component waterborne anticorrosive paint in recent years.Bi-component aqueous epoxy is prevented
Rotten coating can be with room temperature crosslinking curing, and adhesive force is strong, high mechanical strength, and chemical mediator-resitant property is good, and its performance can reach molten
Dosage form epoxy coating level, thus solvent type epoxy anticorrosive paint can be substituted, it is applied to anticorrosion of steel structure.
Polyamide-based firming agent can with epoxy resin ambient temperature curing film forming, the paint film after solidification has good anti-corrosive properties
And pliability.But drying time is long, its maximum shortcoming is that low temperature curing properties are poor, and generally, temperature is less than 10 DEG C
When just cannot be carried out normal construction, and the winter temperature of China's most area is all below 5 DEG C, and large-scale steel structure exists substantially
Outdoor construction, which limits its use in the winter time.
Zhao Keming, Wang Feidi, Qiu Qinghua et al. are at it《The synthesis of modified by cardanol amine epoxy terrace firming agent and performance
Research》In one literary composition, with the Cardanol of natural product garbage cashew nut shell extraction as raw material, with formaldehyde and polyamine（Divinyl three
Amine, triethylene tetramine, m-xylene diamine, isophorone diamine）Reaction, synthesizes amine system epoxide terrace firming agent, existing fatty amine
Room temperature fast setting and excellent chemical-resistant, have the low toxicity of low molecular polyamides, good pliability again.But due to waist
Phenolic hydroxyl group-OH in fruit phenol molecule is not involved in reacting, and the phenolic hydroxyl group containing weak acid in modified firming agent is so as to film easily quilt
Aoxidize and alkali resistance is not good, easily absorb ultraviolet light, be copolymerized, the epoxy coating Yellowing especially severe of solidification.
Therefore, utilize the silicone hydroxyl in attapulgite's surface, with Cardanol, etherificate cross-linking reaction occurs herein, then by changing
Learn the modified cashew pnenolic aldehyde amine hardener of reaction preparation, modified firming agent had both had the advantages that general Cardanol amide hardener, and
The advantage having attapulgite concurrently, forms metastable curing system hence it is evident that improving the color inhibition of epoxy resin cure film
Performance.
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of steel construction with having the water-base epoxy of high antiseptic property for a long time
Priming paint and preparation method thereof, improves the anti-yellowing property of epoxy resin cure film, long-term antiseptic property.
A kind of steel construction, with having the water-base epoxy priming paint of high antiseptic property for a long time, is made up of the raw material of following weight portion：
Epoxy resin 50-70 part, Cardanol 15-20 part, formalin 15-25 part, isophorone diamine 17-24 part, KH550 2-3
Part, attapulgite 3-7 part, 1mol/L hydrochloric acid solution is appropriate, benzyltriethylammoinium chloride 0.8-1.5 part, and 30% sodium hydroxide is molten
Liquid 16-20 part, appropriate deionized water, stearmide 1-2 part, epoxide diluent 1-4 part, zinc phosphate 2-5 part, aluminium triphosphate 2-
5 parts, zinc yellow 1-3 part.
Comprise the following steps that：
（1）Attapulgite modified Cardanol：
1., attapulgite is added in the aqueous solution of KH550, adjusts pH to 3-4 with 1mol/L hydrochloric acid solution, at stirring at normal temperature
Reason 12-18 hour, is washed with deionized afterwards, and 1500-2500r/min is centrifuged, and vacuum drying is pulverized, and crosses 100-200 mesh
Sieve, standby；
2., the attapulgite after Cardanol, benzyltriethylammoinium chloride and modification is added in reaction bulb, in 70-90
Under the conditions of DEG C, constant temperature stirring 3-5 hour, is cooled to 50-70 DEG C, adds 30% sodium hydroxide solution, under conditions constant temperature stirring
2-4 hour, is cooled to room temperature, washs to neutrality, separates and concentrate, obtain attapulgite modified Cardanol；
（2）The preparation of modified cashew pnenolic aldehyde amine hardener：
Will be equipped with motor stirrer, the four-hole boiling flask of condensing tube is placed in 30-50 DEG C of water bath with thermostatic control, add step（1）Preparation
Attapulgite modified Cardanol, Deca isophorone diamine while stirring, add formalin and stir, water-bath liter
Warm 90-100 DEG C, isothermal reaction 2-4 hour, it is cooled to 60-75 DEG C, control pressure carries out decompression in 0.0085-0.0095MPa and steams
Evaporate, modification cashew pnenolic aldehyde amine hardener is obtained；
（3）Prepared by component A：
1., first by part steps（2）The modified cashew pnenolic aldehyde amine hardener obtaining and defoamer, water premix, add phosphoric acid afterwards
Zinc, aluminium triphosphate, zinc yellow, are ground to fineness through sand mill and are less than 30 μm, prepared mill base；
2., under stirring, add remaining modification cashew pnenolic aldehyde amine hardener, stearmide in mill base, stir 15-30
Minute, filter and obtain final product component A；
（4）After epoxy resin, epoxide diluent mixing fully, individually pack as component B.
Wherein, step（1）The concentration of aqueous solution of described KH550 is 5%.
Compared with prior art, the present invention has advantages below：
（1）A large amount of silicone hydroxyl structures that the present invention is contained using the attapulgite after silane coupler process, the phenol with Cardanol
There is etherificate cross-linking reaction in hydroxyl, substitute phenolic hydroxyl structure, thus obtaining anti-yellowing property more preferable Fructus anacardii phenol ether through reaction, in modification
On the basis of cashew pnenolic aldehyde amine hardener, develop a kind of novel epoxy coating, have yellowing resistance preferably, low-temperature curable and
The excellent feature of antiseptic property.
（2）In the present invention there is etherificate cross-linking reaction in modified attapulgite and the phenolic hydroxyl group of Cardanol, contains simultaneously
Hydrogen bond, then react prepared modification cashew pnenolic aldehyde amine hardener with isophorone diamine, formaldehyde, both there is general Cardanol amide solid
The advantage of agent, having the advantage of attapulgite concurrently hence it is evident that improving the crosslinking degree of modified firming agent again, being formed metastable solid
Change system, improves toughness, resistance to impact and the thermostability of epoxy resin cure film.
（3）The present invention is used aluminium triphosphate, zinc phosphate and zinc yellow as active rust resisting pigment, and three is combined with collaborative increasing
Effect acts on, and the phosphate radical of dissolution, polyphosphate radical and chromate ion can play passivation, both solve water paint in iron and steel
Sudden strain of a muscle erosion problem when constructing on ground, can slowly discharge inhibition ion after film forming, effectively solving residual moisture causes to coating again
A difficult problem for corrosion troubles is it is ensured that the long-effective corrosion life-span of film.
Specific embodiment
A kind of steel construction water-base epoxy priming paint with high antiseptic property for a long time, by following weight portion（Kilogram）Raw material
Composition：Epoxy resin 65, Cardanol 17, formalin 23, isophorone diamine 21, KH550 3, attapulgite 6,1mol/L salt
Appropriate acid solution, benzyltriethylammoinium chloride 1,30% sodium hydroxide solution 18, appropriate deionized water, stearmide 2, epoxy
Diluent 3, zinc phosphate 3, aluminium triphosphate 3, zinc yellow 2.
Comprise the following steps that：
（1）Attapulgite modified Cardanol：
1., attapulgite is added in the aqueous solution of KH550, adjusts pH to 3.5 with 1mol/L hydrochloric acid solution, at stirring at normal temperature
Reason 16 hours, is washed with deionized afterwards, and 2000r/min is centrifuged, and vacuum drying is pulverized, and crosses 200 mesh sieves, standby；
2., the attapulgite after Cardanol, benzyltriethylammoinium chloride and modification is added in reaction bulb, in 80 DEG C of bars
Under part, constant temperature stirs 4 hours, is cooled to 60 DEG C, adds 30% sodium hydroxide solution, and constant temperature stirs 3 hours under conditions, cooling
To room temperature, wash to neutrality, separate and concentrate, obtain attapulgite modified Cardanol；
（2）The preparation of modified cashew pnenolic aldehyde amine hardener：
Will be equipped with motor stirrer, the four-hole boiling flask of condensing tube is placed in 40 DEG C of waters bath with thermostatic control, add step（1）That prepares is concavo-convex
The Cardanol of excellent land reform, Deca isophorone diamine while stirring, add formalin and stir, water-bath intensification 95
DEG C, isothermal reaction 3 hours, it is cooled to 70 DEG C, control pressure carries out vacuum distillation in 0.0095MPa, modification cashew pnenolic aldehyde is obtained
Amine hardener；
（3）Prepared by component A：
1., first by part steps（2）The modified cashew pnenolic aldehyde amine hardener obtaining and defoamer, water premix, add phosphoric acid afterwards
Zinc, aluminium triphosphate, zinc yellow, are ground to fineness through sand mill and are less than 30 μm, prepared mill base；
2., under stirring, add remaining modification cashew pnenolic aldehyde amine hardener, stearmide in mill base, stir 26 points
Clock, filters and obtains final product component A；
（4）After epoxy resin, epoxide diluent mixing fully, individually pack as component B.
Wherein, step（1）The concentration of aqueous solution of described KH550 is 5%.
The performance test results：
Adhesive force：1 grade；Pliability：2mm；Salt fog resistance/h：>500；Petrol-resistance：200h coating is intact.
Claims (3)
1. a kind of steel construction is with having the water-base epoxy priming paint of high antiseptic property for a long time it is characterised in that by following weight portion
Raw material forms：Epoxy resin 50-70 part, Cardanol 15-20 part, formalin 15-25 part, isophorone diamine 17-24 part,
KH550 2-3 part, attapulgite 3-7 part, 1mol/L hydrochloric acid solution is appropriate, benzyltriethylammoinium chloride 0.8-1.5 part, 30%
Sodium hydroxide solution 16-20 part, appropriate deionized water, stearmide 1-2 part, epoxide diluent 1-4 part, zinc phosphate 2-5 part, three
Poly aluminium phosphate 2-5 part, zinc yellow 1-3 part.
2. a kind of steel construction according to claims 1 is with having the preparation of the water-base epoxy priming paint of high antiseptic property for a long time
Method is it is characterised in that comprise the following steps that：
（1）Attapulgite modified Cardanol：
1., attapulgite is added in the aqueous solution of KH550, adjusts pH to 3-4 with 1mol/L hydrochloric acid solution, at stirring at normal temperature
Reason 12-18 hour, is washed with deionized afterwards, and 1500-2500r/min is centrifuged, and vacuum drying is pulverized, and crosses 100-200 mesh
Sieve, standby；
2., the attapulgite after Cardanol, benzyltriethylammoinium chloride and modification is added in reaction bulb, in 70-90
Under the conditions of DEG C, constant temperature stirring 3-5 hour, is cooled to 50-70 DEG C, adds 30% sodium hydroxide solution, under conditions constant temperature stirring
2-4 hour, is cooled to room temperature, washs to neutrality, separates and concentrate, obtain attapulgite modified Cardanol；
（2）The preparation of modified cashew pnenolic aldehyde amine hardener：
Will be equipped with motor stirrer, the four-hole boiling flask of condensing tube is placed in 30-50 DEG C of water bath with thermostatic control, add step（1）Preparation
Attapulgite modified Cardanol, Deca isophorone diamine while stirring, add formalin and stir, water-bath liter
Warm 90-100 DEG C, isothermal reaction 2-4 hour, it is cooled to 60-75 DEG C, control pressure carries out decompression in 0.0085-0.0095MPa and steams
Evaporate, modification cashew pnenolic aldehyde amine hardener is obtained；
（3）Prepared by component A：
1., first by part steps（2）The modified cashew pnenolic aldehyde amine hardener obtaining and defoamer, water premix, add phosphoric acid afterwards
Zinc, aluminium triphosphate, zinc yellow, are ground to fineness through sand mill and are less than 30 μm, prepared mill base；
2., under stirring, add remaining modification cashew pnenolic aldehyde amine hardener, stearmide in mill base, stir 15-30
Minute, filter and obtain final product component A；
（4）After epoxy resin, epoxide diluent mixing fully, individually pack as component B.
3. a kind of steel construction according to claims 2 is with having the preparation of the water-base epoxy priming paint of high antiseptic property for a long time
Method is it is characterised in that step（1）The concentration of aqueous solution of described KH550 is 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901144.3A CN106433401A (en) | 2016-10-14 | 2016-10-14 | Waterbome epoxy resin primer with long-term high corrosion resistance for steel structure and preparation method of primer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901144.3A CN106433401A (en) | 2016-10-14 | 2016-10-14 | Waterbome epoxy resin primer with long-term high corrosion resistance for steel structure and preparation method of primer |
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| CN106433401A true CN106433401A (en) | 2017-02-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116836399A (en) * | 2023-06-28 | 2023-10-03 | 浙江大学 | Preparation method of organic-inorganic hybrid block polymer based on cardanol and montmorillonite |
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|---|---|---|---|---|
| CN102031053A (en) * | 2010-12-21 | 2011-04-27 | 中国电力科学研究院 | Anti-corrosion coating for surface of steel structure and preparation method thereof |
| CN102702688A (en) * | 2012-06-28 | 2012-10-03 | 哈尔滨工业大学 | Bisphenol-A epoxy resin/attapulgite nano composite material and preparation method thereof |
| CN102816496A (en) * | 2012-07-20 | 2012-12-12 | 常州光辉化工有限公司 | Polyaniline/attapulgite nano-material antirust primer and preparation method thereof |
| CN103275596A (en) * | 2013-03-29 | 2013-09-04 | 厦门双瑞船舶涂料有限公司 | Light-color modified epoxy static conductive anticorrosion coating and preparation method thereof |
-
2016
- 2016-10-14 CN CN201610901144.3A patent/CN106433401A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031053A (en) * | 2010-12-21 | 2011-04-27 | 中国电力科学研究院 | Anti-corrosion coating for surface of steel structure and preparation method thereof |
| CN102702688A (en) * | 2012-06-28 | 2012-10-03 | 哈尔滨工业大学 | Bisphenol-A epoxy resin/attapulgite nano composite material and preparation method thereof |
| CN102816496A (en) * | 2012-07-20 | 2012-12-12 | 常州光辉化工有限公司 | Polyaniline/attapulgite nano-material antirust primer and preparation method thereof |
| CN103275596A (en) * | 2013-03-29 | 2013-09-04 | 厦门双瑞船舶涂料有限公司 | Light-color modified epoxy static conductive anticorrosion coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵科明: "腰果酚改性胺类环氧地坪固化剂的合成及性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116836399A (en) * | 2023-06-28 | 2023-10-03 | 浙江大学 | Preparation method of organic-inorganic hybrid block polymer based on cardanol and montmorillonite |
| CN116836399B (en) * | 2023-06-28 | 2024-04-02 | 浙江大学 | Preparation method of organic-inorganic hybrid block polymer based on cardanol and montmorillonite |
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Application publication date: 20170222 |