CN111393951B - High-solid low-viscosity epoxy coating for quick-drying type engineering machinery and preparation method thereof - Google Patents
High-solid low-viscosity epoxy coating for quick-drying type engineering machinery and preparation method thereof Download PDFInfo
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Abstract
A high-solid low-viscosity epoxy coating for quick-drying engineering machinery and a preparation method thereof are disclosed, wherein the coating is prepared by mixing a component A and a component B: the component A comprises bisphenol F type epoxy resin, hydroxymethyl bisphenol A type epoxy resin, a dispersing agent, a leveling agent, an anti-settling agent, special liquid resin, pigment and filler, an anti-rust pigment and a solvent; the component B comprises a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent; the solvent is xylene and n-butanol. The invention also comprises a preparation method of the coating. The coating has high solid content and low viscosity, can be sprayed by air or airless spraying during construction, and has a film forming thickness of more than or equal to 100 mu m at one time; the construction efficiency is high; the coating film drying speed is high, and the surface drying time is less than or equal to 10 min; the coating has strong adhesion with a substrate, good impact resistance, good flexibility, salt spray resistance and excellent medium resistance; the VOC emission is low, and the environment is friendly; the preparation method of the coating is simple to operate and is suitable for industrial production.
Description
Technical Field
The invention relates to a high-solid low-viscosity epoxy coating and a preparation method thereof, in particular to a high-solid low-viscosity epoxy coating for quick-drying engineering machinery and a preparation method thereof.
Background
With the rapid development of modern industry and the continuous enhancement of environmental awareness, the development and development of coatings are also moving towards 5E, namely quality excellent, economic economy, efficiency, ecological and energy. The worldwide restrictions on VOC emissions are becoming more and more strict, which has prompted the development of high solids coatings. On the way of developing heavy-duty anticorrosive coatings in the 21 st century, as people pay more and more attention to environmental protection, the control of the content of solvents in the coatings is also becoming more important for the heavy-duty anticorrosive coatings.
Modern heavy-duty anticorrosive coatings are also developing towards high-solid epoxy coatings, solvent-free epoxy coatings and water-based epoxy coatings. Although the high-solid paint contains a certain amount of solvent, the content of the solvent is obviously lower than that of the traditional epoxy heavy-duty anticorrosive paint, and the anticorrosive performance of the high-solid paint is also more excellent. In the huge heads of engineering machinery such as the middle-series complex and the slow-release group, the high-solid low-viscosity epoxy coating is gradually used due to the environmental protection pressure, but the high-solid epoxy coating is generally dried at a low speed.
CN 104513590A discloses a room temperature quick-drying high-corrosion-resistance two-component water-based epoxy coating, which comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 50-60% of water-based epoxy emulsion; 0.5-1.5% of defoaming agent; 1-2% of a dispersant; 6.5-15% of titanium dioxide; 17-24% of talcum powder; 7-15.5% of an anti-rust pigment; the component B comprises the following raw materials in percentage by weight: 45-55% of a water-based epoxy curing agent; 42-50% of deionized water; 3-5% of cosolvent; before coating, the component A and the component B are mixed according to the weight ratio of 5.0-6.5: 1. The surface drying time of the coating is 20-25min, and the coating is dried for 3-4h, wherein the surface drying time is long, and the requirement of rapid construction cannot be met.
Therefore, the development of a quick-drying, environmentally friendly, high-solid, low-viscosity epoxy coating for construction machinery is urgent.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the high-solid-content low-viscosity epoxy protective coating for the engineering machinery, which has the advantages of high drying speed, particularly high surface drying speed, good mechanical property, salt mist resistance and medium resistance, high solid content of the product and environmental friendliness.
The invention further aims to solve the technical problem of overcoming the defects in the prior art and provide a preparation method of the high-solid low-viscosity epoxy coating for quick-drying engineering machinery, which is simple in process and suitable for industrial production.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-solid low-viscosity epoxy coating for quick-drying engineering machinery is prepared by mixing a component A and a component B: the component A comprises bisphenol F type epoxy resin, hydroxymethyl bisphenol A type epoxy resin, a dispersing agent, a leveling agent, an anti-settling agent, special liquid resin, pigment and filler, an anti-rust pigment and a solvent; the component B comprises a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent; the solvent is xylene and n-butanol.
Preferably, the component A and the component B are mixed according to the volume ratio of 4-6: 1.
In the formula of the invention, the component A is mainly used as a base material, and the component A reaches a balance in drying time, mechanical property, paint viscosity and solid content by adding bisphenol F type epoxy resin, hydroxymethyl bisphenol A type epoxy resin and special liquid resin with different properties; the epoxy resin has excellent corrosion resistance due to the structure of the epoxy resin; phosphate antirust pigment is added in the formula, phosphate and metal ions are released in the slow hydrolysis process of phosphate, and a compact and firm complex protective film with strong adhesiveness is generated by combining phosphate ions and iron salt, so that the salt spray resistance and medium resistance of the product can be improved, and the antirust pigment does not contain heavy metal and is environment-friendly; the component B is mainly used as a curing agent, and the epoxy group of the epoxy resin and the amine curing agent are subjected to crosslinking reaction. Therefore, the epoxy group of the epoxy resin in the component A can be subjected to crosslinking reaction and curing with the amine curing agent in the component B to obtain a paint film with high drying speed, excellent mechanical property, excellent salt spray resistance and excellent medium resistance.
Preferably, the weight parts of the raw materials are as follows: the component A comprises 5-20 parts of bisphenol F type epoxy resin, 10-30 parts of hydroxymethyl bisphenol A type epoxy resin, 0.2-0.8 part of dispersing agent, 0.2-0.8 part of flatting agent, 0.4-1 part of anti-settling agent, 1-5 parts of special liquid resin, 35-60 parts of pigment and filler, 5-15 parts of anti-rust pigment, 5-10 parts of dimethylbenzene and 1-4 parts of n-butyl alcohol; the component B comprises 40-90 parts of modified polyamide curing agent, 5-20 parts of modified aliphatic Mannich base, 2-10 parts of curing accelerator, 5-30 parts of xylene and 2-15 parts of n-butyl alcohol. The use amount of the raw materials can meet the index requirements of the product only within the range.
Preferably, in the component A, the bisphenol F type epoxy resin is one or more of NPEF-170 produced by south Asia epoxy resin Co., Ltd, BFE-283, BFE-170 or BFE-235L produced by Changchun chemical Co., Ltd, and SMF-170 or SMF-175S produced by Jiangsu Sanmu group Co., Ltd. The bisphenol F type epoxy resin has the characteristics of low viscosity which is less than 1/3 of bisphenol A type epoxy resin, almost the same performance of a cured product as the bisphenol A type epoxy resin, slightly low heat resistance and slightly excellent corrosion resistance, can effectively reduce the viscosity of a system, and ensures excellent corrosion resistance.
Preferably, in the component A, the hydroxymethyl bisphenol A type epoxy resin is one or more of 5392-Q-75 produced by vastness, KDN-253 or KDN-255 produced by national chemical industry Co. The hydroxymethyl bisphenol A epoxy resin is a new variety with ring-opening activity much higher than that of common bisphenol A epoxy resin, can be cured at the low temperature of-5 to-10 ℃, and can effectively improve the drying speed of the system.
Preferably, in the component A, the dispersant is one or more of BYK-163 or BYK-110 manufactured by Pico and 9850 manufactured by Germany. They belong to deflocculating dispersants and have the effect of strongly reducing the viscosity of the system.
Preferably, in the component A, the leveling agent is BF-6300 produced by Foshan fibrate. Has better leveling effect.
Preferably, in the component A, the anti-settling agent is one or more of BENGEL828, SD-1 or SD-2 produced by Germany, and BS-1A or BS-1B produced by Zhejiang Fenghong new material, Inc. Has excellent anti-sinking and anti-sagging effects.
Preferably, in the component A, the special liquid resin is one or more of Novares LA100 or Novares LA300 produced by Luteger, and HL100, HL500 or HL1000 produced by Guangdong Xinhuayue resin limited in technology. They have the characteristics of high solid content and low viscosity, and can achieve the goal of balancing corrosion resistance, drying speed and mechanical property.
Preferably, in the component A, the pigment and filler is one or more of red iron oxide or black iron oxide produced by the Hunan tricyclic pigment company, silicon micropowder or powdered quartz produced by the Liuyang Jinma silicon industry and talcum powder produced by the Jiangxi Aust science and technology company.
Preferably, in the component A, the antirust pigment is one or more of zinc phosphate, ZP20 or ZMP-1 produced by Hunan ryishi stone science and technology Limited, and PZ-01, ZA or ZPA produced by Hangzhou stan. They belong to phosphate antirust pigments and have the characteristics of no heavy metal, low water solubility and good antirust effect; phosphate and metal ions are released in the slow hydrolysis process, a compact and firm complex protective film with strong adhesiveness is generated by combining the phosphate ions and iron salts, and the complex protective film is compounded with epoxy resin and amine curing agent to obtain a paint film with excellent corrosion resistance.
Preferably, in the component B, the modified polyamide curing agent is one or more of ANCAMIDE2050, ANCAMIDE2353 or ANCAMIDE2864 produced by atmospheric chemistry, GX-483, GX-533 or GX-540 produced by GmbH chemical Co., Ltd, and ARADUR250 or ARADUR450S produced by Hensman. The modified polyamide curing agent has the excellent mechanical properties of the polyamide curing agent, and the drying speed is higher than that of common polyamide.
Preferably, in the component B, the modified aliphatic Mannich base is one or more of ANCAMINE2636 or ANCAMINE2758 produced by air chemistry, ARADUR943 or ARADUR3229 produced by Hounsfield. The modified aliphatic Mannich base has excellent drying property, can be cured at a low temperature of-5 ℃, and can be compounded with a modified polyamide curing agent for use, so that the drying speed and the mechanical property of the product can reach a balance.
Preferably, in the B component, the curing accelerator is one or more of K54 manufactured by air chemistry, KUMANOX-3111F manufactured by Korea brocade lake. K54 chemical name is 2,4, 6-tri (dimethylamino methyl) phenol, belongs to tertiary amine curing agent accelerator, can be used alone as epoxy resin curing agent, and can be used as curing reaction accelerator of curing agents such as aliphatic polyamine, polyamide, aromatic polyamine and acid anhydride. KUMANOX-3111F is styrenated phenol containing hydroxyl group, and has effects of promoting curing reaction and toughening.
The technical scheme adopted for further solving the technical problems is as follows: a high-solid low-viscosity epoxy coating for quick-drying engineering machinery and a preparation method thereof comprise the following steps:
(1) preparation of component A: mixing part of solvent and anti-settling agent, and stirring at high speed; then adding bisphenol F type epoxy resin and a dispersing agent, and stirring at a high speed; finally, adding coloring pigment, filler and anti-rust pigment, mixing, stirring at a high speed, grinding into slurry by using a horizontal sand mill, adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry, blending, and filtering to obtain a component A;
(2) preparation of the component B: mixing a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent, stirring at a high speed, and filtering to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the volume ratio of 4-6: 1 to obtain the high-performance high-temperature-resistant high-temperature-humidity paint.
Preferably, in the step (1), the mass ratio of the solvents added successively is 1: 0.2-0.4, part of the solvents are added firstly to enable the slurry to have higher viscosity and improve the dispersion effect of the pigment and filler, and then the anti-settling agent is added for high-speed stirring, so that the anti-settling agent can be activated better, and the anti-settling property and the anti-sagging property are activated; then adding bisphenol F type epoxy resin and a dispersant for high-speed stirring, aiming at better and uniform dispersion of the dispersant in a system, better wetting and dispersing effects on pigments, fillers and antirust pigments and improvement of grinding efficiency; adding the pigment, the filler and the anti-rust pigment, stirring at a high speed, and grinding into slurry by using a horizontal sand mill; and then adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry for blending and filtering to obtain the component A. And partial solvent, resin and auxiliary agent are added later, so that the product packaging is facilitated, and the production efficiency is improved.
Preferably, in the step (1), the dispersion speed of the mixed solvent and anti-settling agent is 1000-1500r/min, and the dispersion time is 10-20 min; after the bisphenol F type epoxy resin and the dispersing agent are added, the dispersing speed is 1000-1500r/min, and the dispersing time is 10-20 min; adding the coloring pigment, the filler and the anti-rust pigment, mixing, and then dispersing at a speed of 1000-1500r/min for 10-20 min; finally, hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent are added into the slurry for blending, the dispersion speed is 1000-1500r/min, and the dispersion time is 20-40 min. If the dispersion speed is too low, the dispersion effect is poor; if the dispersion speed is too high, the temperature of the raw materials rises, solvent volatilization is accelerated, and product quality problems and environmental pollution are caused. If the dispersion time is too short, the product is not uniformly mixed, and the product quality problem is caused; if the dispersion time is too long, energy waste is caused, and the production efficiency is reduced.
Preferably, in the step (1), the grinding is carried out until the fineness is less than or equal to 40 mu m.
Preferably, in the step (1), the filtering is performed by using a 100-300-mesh silk cloth.
Preferably, in the step (2), the stirring speed of the mixture of the modified polyamide curing agent, the modified aliphatic Mannich base, the curing accelerator and the solvent is 400-800 r/min, and the stirring time is 10-40 min. If the stirring speed is too low, the time for uniform mixing is prolonged, so that the production efficiency is influenced; if the stirring speed is too high, the temperature of the raw materials is too high, and the solvent is volatilized, so that waste and environmental pollution are caused. If the stirring time is too short, the raw materials are not uniformly mixed, so that the product quality is influenced; if the stirring time is too long, energy waste is caused, and the production efficiency is affected.
Preferably, in the step (2), the filtering is performed by using a 100-300-mesh silk cloth.
The invention has the following beneficial effects:
(1) the high-solid low-viscosity epoxy coating for the quick-drying type engineering machinery can be directly sprayed on the surface of a steel structure of an engineering machinery system, the product overcomes the defect of low drying speed of a high-solid epoxy primer, the coating film drying speed is high (the surface drying speed is less than or equal to 10 min; the actual drying speed is less than or equal to 10h), the upper film thickness is higher than that of a common solvent type product, the drying mode can be randomly adjusted, and the construction efficiency is high, so that the requirement of the site construction assembly line operation of the engineering machinery is met; the coating has strong adhesion with the surface of steel, good impact resistance and flexibility, and excellent salt spray resistance and medium resistance; meanwhile, the quick-drying high-solid low-viscosity epoxy coating product has high solid content and low viscosity, the amount of the added diluent is reduced by 60-90% compared with that of the common solvent type epoxy primer during construction, the quick-drying high-solid low-viscosity epoxy coating belongs to the environment-friendly type, and the application of the quick-drying high-solid low-viscosity epoxy coating product can improve the overall coating level of engineering machinery, improve the market competitiveness of the engineering machinery and has wide market prospect;
(2) the preparation method has simple process and excellent performance, and is suitable for industrial production.
Detailed Description
The present invention will be further described with reference to the following examples.
The bisphenol F epoxy resin NPEF-170 used in the embodiment of the invention is purchased from south Asia, BFE-170 is purchased from Changchun, SMF-175S is purchased from Sanmu; the hydroxymethyl bisphenol A epoxy resin 5392-Q-75 is purchased from Vast and KDN-253 is purchased from China; the dispersant used was BYK-163 from bike and 9850 from D.modest; the flatting agent BF-6300 is purchased from fibrate; the used anti-settling agents BENGEL828, SD-1 and SD-2 are purchased from D.E.; the special liquid resins Novares LA100 and Novares LA300 are purchased from Luteige, and HL500 is purchased from Xinhuayue; the pigment filler iron oxide red is purchased from tricyclic in the south of lake, the silicon micropowder is purchased from silicon of Jinma, and the talcum powder is purchased from Aoxinte in Jiangxi; the used rust-proof pigments zinc phosphate and ZP20 are both purchased from Hunan Ruili, ZA is purchased from Hangzhou Sitan; the modified polyamide curing agent, ANCAMIDE2353, used was purchased from aerochemistry, GX-533 was purchased from guchi, ARADUR450S was purchased from hensimei; the modified aliphatic mannich base used, ANCAMINE2636, was purchased from air chemistry, ARADUR943 from hensmel; the curing accelerator K54 used was purchased from air chemistry.
The chemical reagents used in the examples of the present invention, unless otherwise specified, are commercially available in a conventional manner.
Examples 1 to 3
Examples 1 to 3 of the high-solid low-viscosity epoxy coating for quick-drying type construction machinery of the present invention
The weight parts of the raw materials are shown in table 1: 3
TABLE 1 weight parts of the raw materials of examples 1 to 3 of the high-solid low-viscosity epoxy coating for quick-drying construction machinery of the present invention
Note: in the table, "-" indicates no addition.
Preparation of a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to the invention EXAMPLE 1
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the example 1 in the table 1, firstly, mixing part of the solvent and the anti-settling agent, and then, uniformly stirring for 10min at 1500 r/min; then adding bisphenol F type epoxy resin and a dispersing agent, and stirring at a constant speed of 1500r/min for 10 min; finally, adding coloring pigment, filler and anti-rust pigment, mixing, stirring at a constant speed for 10min at 1500r/min, then grinding into slurry by using a horizontal sand mill, adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry for blending, stirring at a constant speed for 20min at 1500r/min, and filtering to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the embodiment 1 in the table 1, firstly adding the modified polyamide curing agent, the modified aliphatic Mannich base, the curing accelerator and the solvent into a stirring barrel, uniformly stirring for 40min at 400r/min, and filtering to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the volume ratio of 4:1 to obtain the high-performance high-temperature-resistant high-temperature-humidity-resistant paint.
Preparation method of high-solid low-viscosity epoxy coating for quick-drying type engineering machinery according to the invention example 2
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the example 1 in the table 1, firstly, mixing part of the solvent and the anti-settling agent, and then, uniformly stirring for 15min at 1300 r/min; then adding bisphenol F type epoxy resin and a dispersing agent, and stirring at a constant speed of 1300r/min for 15 min; finally, adding coloring pigment, filler and anti-rust pigment, mixing, stirring at a constant speed for 15min at 1300r/min, then grinding into slurry by using a horizontal sand mill, adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry for blending, stirring at a constant speed for 30min at 1300r/min, and filtering to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the embodiment 1 in the table 1, firstly adding a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent into a stirring barrel, uniformly stirring for 30min at 600r/min, and filtering to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the volume ratio of 5:1 to obtain the high-performance high-temperature-resistant high-temperature-resistant medium.
Preparation method of high-solid low-viscosity epoxy coating for quick-drying type engineering machinery according to the invention example 3
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the example 1 in the table 1, firstly, mixing part of the solvent and the anti-settling agent, and then, uniformly stirring for 20min at 1000 r/min; then adding bisphenol F type epoxy resin and a dispersing agent, and stirring at a constant speed for 20min at 1000 r/min; finally, adding coloring pigment, filler and anti-rust pigment, mixing, stirring at a constant speed for 20min at 1000r/min, then grinding into slurry by using a horizontal sand mill, adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry for blending, stirring at a constant speed for 30min at 1000r/min, and filtering to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the embodiment 1 in the table 1, firstly adding a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent into a stirring barrel, uniformly stirring for 20min at 800r/min, and filtering to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the volume ratio of 6:1 to obtain the high-performance high-temperature-resistant high-temperature-humidity-resistant paint.
The fast-drying epoxy coating with high solid content and low viscosity for engineering machinery obtained in examples 1 to 3 and the epoxy coating with high solid content obtained from Zhongshan chemical group Co., Ltd, which is commercially available in the prior art, are respectively sprayed on a steel plate or a tinplate by an air-assisted spray gun, 4 to 9 items are detected on the tinplate, the coating thickness (dry film) is 23 +/-3 mu m, and 13 to 18 items are detected on a cold-rolled steel plate, and the (dry film) is 50 +/-5 mu m. The technical index requirements of the engineering machinery on the product and the actual measurement results of the coating performance of the coatings of the examples 1-3 and the comparative example 1 are shown in the table 2.
Table 2 actual measurement results of coating film performances of the quick-drying type high-solid low-viscosity epoxy coating for engineering machinery obtained in examples 1-3 and the coating film obtained in comparative example 1
Fruit
As can be seen from Table 2, compared with the comparative examples, the coatings of examples 1 to 3 have high solid content, less diluent is added in the construction process, and the coatings have lower heavy metal content and lower VOC content, and belong to environment-friendly products; the coating also has excellent medium resistance, damp-heat resistance and more excellent salt mist resistance; meanwhile, the coating has shorter surface drying and actual drying time, and the product construction can improve the construction efficiency of flow line operation of an engineering machinery workshop.
Three coatings in the embodiments 1-3 of the invention are respectively subjected to template and finished automobile spraying construction in two engineering machinery factories in China, all indexes meet the primer standard of the engineering machinery industry through field inspection, and after the acrylic polyurethane finish paint which is used for spraying the coatings as the primer and matched with a frame is used for 2 years, the coatings are flat and smooth, and have no rust and obvious defects.
Claims (12)
1. A high-solid low-viscosity epoxy coating for quick-drying engineering machinery is characterized in that: is prepared by mixing a component A and a component B: the component A is bisphenol F type epoxy resin, hydroxymethyl bisphenol A type epoxy resin, a dispersing agent, a leveling agent, an anti-settling agent, special liquid resin, pigment and filler, an anti-rust pigment and a solvent; the component B comprises a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent; the solvent is dimethylbenzene and n-butyl alcohol; the volume ratio of the component A to the component B is 4-6: 1;
the component A comprises 5-20 parts of bisphenol F type epoxy resin, 10-30 parts of hydroxymethyl bisphenol A type epoxy resin, 0.2-0.8 part of dispersing agent, 0.2-0.8 part of flatting agent, 0.4-1 part of anti-settling agent, 1-5 parts of special liquid resin, 35-60 parts of pigment and filler, 5-15 parts of anti-rust pigment, 5-10 parts of dimethylbenzene and 1-4 parts of n-butyl alcohol; the component B comprises 40-90 parts of modified polyamide curing agent, 5-20 parts of modified aliphatic Mannich base, 2-10 parts of curing accelerator, 5-30 parts of xylene and 2-15 parts of n-butyl alcohol;
the special liquid resin is one or more of Novares LA100 or Novares LA300, HL100, HL500 or HL 1000; the modified polyamide curing agent is one or more of ANCAMIDE2050, ANCAMIDE2353 or ANCAMIDE2864, GX-483, GX-533 or GX-540, ARADUR250 or ARADUR 450S; the modified aliphatic Mannich base is one or more of ANCAMINE2636 or ANCAMINE2758, ARADUR943 or ARADUR 3229.
2. The high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 1, characterized in that: the bisphenol F type epoxy resin is one or more of NPEF-170, BFE-283, BFE-170, BFE-235L, SMF-170 or SMF-175S; the hydroxymethyl bisphenol A type epoxy resin is one or more of 5392-Q-75, KDN-253 or KDDN-255; the dispersing agent is one or more of BYK-163, BYK-110 or 9850; the flatting agent is BF-6300; the anti-settling agent is one or more of BENGEL828, SD-1, SD-2, BS-1A or BS-1B; the pigment and filler is one or more of red iron oxide or black iron oxide, silicon micropowder, quartz powder or talcum powder; the rust-proof pigment is one or more of zinc phosphate, ZP20, ZMP-1, PZ-01, ZA or ZPA.
3. The high-solid low-viscosity epoxy coating material for quick-drying type construction machinery according to claim 1 or 2, characterized in that: the curing accelerator is one or more of K54 or KUMANOX-3111F.
4. A method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 1 or 2, comprising the steps of:
(1) preparation of component A: mixing part of solvent and anti-settling agent, and stirring at high speed; then adding bisphenol F type epoxy resin and a dispersing agent, and stirring at a high speed; finally, adding coloring pigment, filler and anti-rust pigment, mixing, stirring at a high speed, grinding into slurry by using a horizontal sand mill, adding hydroxymethyl bisphenol A epoxy resin, special liquid resin, a flatting agent and the rest solvent into the slurry, blending, and filtering to obtain a component A;
(2) preparation of the component B: mixing a modified polyamide curing agent, a modified aliphatic Mannich base, a curing accelerator and a solvent, stirring at a high speed, and filtering to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the volume ratio of 4-6: 1 to obtain the high-performance high-temperature-resistant high-temperature-humidity paint.
5. The method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 4, wherein: in the step (1), the high-speed stirring speed is 1000-1500r/min, and the stirring time is 10-40 min.
6. The method for preparing a high-solid low-viscosity epoxy coating material for quick-drying type construction machinery according to claim 4 or 5, wherein: in the step (2), the high-speed stirring speed is 400-800 r/min, and the stirring time is 10-40 min.
7. The method for preparing a high-solid low-viscosity epoxy coating material for quick-drying type construction machinery according to claim 4 or 5, wherein: in the step (1), the grinding is carried out until the fineness is less than or equal to 40 mu m.
8. The method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 6, wherein: in the step (1), the grinding is carried out until the fineness is less than or equal to 40 mu m.
9. The method for preparing a high-solid low-viscosity epoxy coating material for quick-drying type construction machinery according to claim 4 or 5, wherein: in the step (1), the filtration is carried out by using 100-300 meshes of silk cloth.
10. The method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 6, wherein: in the step (1), the filtration is carried out by using 100-300 meshes of silk cloth.
11. The method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 7, wherein: in the step (1), the filtration is carried out by using 100-300 meshes of silk cloth.
12. The method for preparing a high-solid low-viscosity epoxy coating for quick-drying type construction machinery according to claim 8, wherein: in the step (1), the filtration is carried out by using 100-300 meshes of silk cloth.
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| CN114806329A (en) * | 2022-04-06 | 2022-07-29 | 湘江涂料科技有限公司 | High-solid-content low-surface-treatment moisture-curing polysulfide epoxy coating |
| CN115286970B (en) * | 2022-06-23 | 2023-06-30 | 南京长江涂料有限公司 | Solvent-free wet-on-wet construction epoxy anti-corrosion primer and preparation method thereof |
| CN115974531B (en) * | 2023-02-16 | 2023-12-26 | 浙江矽瓷科技有限公司 | Low-temperature cofired ceramic tape casting slurry and preparation method thereof |
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Denomination of invention: A high solid and low viscosity epoxy coating for quick drying construction machinery and its preparation method Effective date of registration: 20230731 Granted publication date: 20211210 Pledgee: Agricultural Bank of China Limited Changsha Wangcheng District sub branch Pledgor: XIANGJIANG PAINT TECHNOLOGY CO.,LTD. Registration number: Y2023980050457 |
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