CN109836917B - Protective coating for outdoor power equipment and preparation method thereof - Google Patents
Protective coating for outdoor power equipment and preparation method thereof Download PDFInfo
- Publication number
- CN109836917B CN109836917B CN201910142264.3A CN201910142264A CN109836917B CN 109836917 B CN109836917 B CN 109836917B CN 201910142264 A CN201910142264 A CN 201910142264A CN 109836917 B CN109836917 B CN 109836917B
- Authority
- CN
- China
- Prior art keywords
- parts
- power equipment
- protective coating
- outdoor power
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides an outdoor power equipment protective coating, and belongs to the technical field of coating compositions. The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 30-45 parts of FEVE fluorocarbon resin, 12-20 parts of bisphenol A epoxy resin, 5-10 parts of modified nano silicon dioxide, 25-35 parts of solvent, 0.02-0.1 part of catalyst and 0.8-1.5 parts of ultraviolet absorbent. The outdoor power equipment protective coating disclosed by the invention can enhance the weather-resistant and corrosion-resistant performances of outdoor power equipment.
Description
Technical Field
The invention relates to the technical field of coating compositions, and particularly relates to an outdoor power equipment protective coating and a preparation method thereof.
Background
The installation addresses of most electric power equipment in China are mainly selected outdoors, under the condition, the electric power equipment is always damaged by natural environments such as wind, sunlight and the like, the surface of the electric power equipment is easy to corrode, dust and aging are easy to accumulate, the probability of accidents becomes larger, and therefore the protection work of the electric power equipment is very important.
The application of the fluorocarbon coating in the field of corrosion prevention has been long, and the fluorocarbon coating has special advantages in the aspect of corrosion prevention of power equipment and metal frameworks thereof based on the unique chemical structure of the fluorocarbon coating. The anticorrosive effect of the coating mainly comprises the following contents: the paint has the advantages of shielding effect, cathode protection effect, resistance effect of paint film, pigment corrosion inhibition effect and passivation effect. The anticorrosive application of the fluorocarbon coating mainly depends on the atomic structures of fluorine atoms and carbon atoms, fluorine molecules are nonpolar molecules, fluorine elements have low polarizability, the binding effect of fluorine atom cores on extra-nuclear electrons and bonding electron clouds is strong, and the structures are relatively symmetrical. Meanwhile, when fluorine atoms and other atoms are copolymerized to form a high polymer, the fluorine atoms play a strong shielding effect and a steric hindrance effect, so that the copolymer has higher chemical inertness than the common non-fluorine copolymer. All of the above factors determine the excellent properties of the fluoropolymer.
Patent document with publication number CN105400314A discloses a corrosion-resistant fluorocarbon resin coating, which comprises the following raw materials in parts by weight: 30-50 parts of FEVE fluorocarbon resin, 20-45 parts of aliphatic epoxy resin, 20-40 parts of acrylic acid modified alkyd resin, 5-15 parts of bentonite, 5-12 parts of magnesium silicate, 10-20 parts of modified kaolin, 2-8 parts of hollow glass beads, 2-8 parts of graphene, 10-18 parts of melamine resin, 2-7 parts of 2-amino-2-methyl-1-propanol, 5-10 parts of methyl cellulose, 1-3 parts of anionic polyacrylamide, 2-7 parts of IPDI isocyanate curing agent, 1-1.8 parts of polydimethylsiloxane, 2-8 parts of butyl acetate, 1-10 parts of propylene glycol, 2-8 parts of dimethyl valerate, 1-4 parts of wetting agent, 1-3 parts of preservative and 30-60 parts of water. The invention has good adhesive force and excellent corrosion resistance. The weather resistance of the fluorocarbon coating needs to be further improved, the variety of materials is various, and the performance stability of the product is not easy to control.
Patent document No. CN107163709A discloses a fluorocarbon resin protective paint coating, which is characterized in that: the material consists of fluorocarbon resin, aliphatic isocyanate, carbon black, acetone, magnesium oxide micro powder, superfine slack wax micro powder, halloysite powder, polyacrylamide and butanone oxime. The finished product of the invention can be applied to the surfaces of steel products, wood, concrete, ships, bridges and various outdoor and indoor hardware equipment, and can prevent corrosion and corrosion of the steel products and the concrete. The aliphatic isocyanate is mixed into the fluorocarbon resin, and the performance of the coating is improved by matching substances such as pigment and the like.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a protective coating for outdoor electrical equipment, so as to enhance the weather resistance and corrosion resistance of the outdoor electrical equipment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 30-45 parts of FEVE fluorocarbon resin, 12-20 parts of bisphenol A epoxy resin, 5-10 parts of modified nano silicon dioxide, 25-35 parts of solvent, 0.02-0.1 part of catalyst and 0.8-1.5 parts of ultraviolet absorbent.
Preferably, the solvent is one or more than two of methyl oleate, cyclohexanone and butyl acetate.
Preferably, the catalyst is zirconium acetylacetonate.
Preferably, the ultraviolet absorber is a benzophenone-based ultraviolet absorber.
Preferably, the ultraviolet absorber is an ultraviolet absorber UV-214, UV-9 or UV-531.
Preferably, the modified nano-silica is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare suspension with the mass fraction of 3-8%, and dispersing for 30-40 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.0-4.2, and stirring in water bath for 30-35 min; adding sodium hexametaphosphate solution with the mass fraction of 2.5-3.0%, dispersing for 30-40 minutes at 2000r/min, standing for 6-8 hours, taking the upper suspension, drying and grinding.
Preferably, the temperature of the water bath is 85-90 ℃.
Preferably, the amount of the sodium hexametaphosphate is 0.5 to 1.2 g.
Preferably, the preparation method of the protective coating for outdoor power equipment comprises the following steps: firstly, mixing the FEVE fluorocarbon resin, the bisphenol A epoxy resin and a solvent, adding 0.01-0.05 part by weight of a catalyst, and stirring and reacting for 1-1.2 hours at the temperature of 75-80 ℃; then adding the modified nano-silica, the ultraviolet absorbent and the rest catalyst, continuously stirring and reacting for 2-3 hours, and naturally cooling to obtain the nano-silica modified ultraviolet light-absorbing material.
Preferably, the stirring speed of the stirring reaction is 200-250 r/min.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, a proper amount of bisphenol A type epoxy resin is mixed into FEVE fluorocarbon resin, the FEVE fluorocarbon resin and the bisphenol A type epoxy resin are used as main film forming substances, and specific modified nano silicon dioxide, a catalyst, an ultraviolet absorbent and a solvent are added, so that the paint with excellent weather resistance and corrosion resistance is prepared.
According to the invention, the FEVE fluorocarbon resin and the bisphenol A epoxy resin are matched, so that the corrosion resistance and weather resistance of the obtained coating are improved; the modified nano silicon dioxide is added, so that the light transmittance of the coating is reduced, the damage of transmitted light to the surface of outdoor power equipment can be reduced, the anti-aging performance is enhanced, the surface of the coating is more compact and flat, the friction coefficient is reduced, the adhesion of pollutants on the surface of the coating can be reduced, the stain resistance of the coating is enhanced, and the coating also has higher acid and alkali resistance; the proper catalyst is added to accelerate the curing speed of the coating, the catalyst is zirconium acetylacetonate, the safety of the coating is further improved, a proper amount of ultraviolet absorbent is added to reduce ultraviolet transmission and enhance the ultraviolet resistance of the coating, and the weather resistance and the ageing resistance of the coating are further improved by matching with the modified nano silicon dioxide; the use of an appropriate and proper amount of solvent is the basis for obtaining a coating film with excellent properties, and improper use of solvent and the amount thereof can cause the coating film to have pathological phenomena such as shrinkage, pinholes and the like, and also affect the dispersion properties of raw materials in the solvent, the stability of the coating and the like. The invention selects one or more than two of methyl oleate, cyclohexanone and butyl acetate as solvents, the obtained coating is easy to coat, has no surface defects, and has high appearance glossiness and strong adhesive force.
Detailed Description
In order to better understand the present invention, the following examples are further provided to clearly illustrate the contents of the present invention, but the contents of the present invention are not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 30-45 parts of FEVE fluorocarbon resin, 12-20 parts of bisphenol A epoxy resin, 5-10 parts of modified nano silicon dioxide, 25-35 parts of solvent, 0.02-0.1 part of catalyst and 0.8-1.5 parts of ultraviolet absorbent.
The FEVE fluorocarbon resin and the bisphenol A epoxy resin used in the invention are obtained from markets.
The solvent of the invention is selected from one or more than two of methyl oleate, cyclohexanone and butyl acetate, preferably more than two of methyl oleate, cyclohexanone and butyl acetate; more preferably methyl oleate and cyclohexanone in a weight ratio (1.2-2.3): 1, or, cyclohexanone and butyl acetate in a weight ratio of 1: the composition of (2-3).
The catalyst of the invention selects zirconium acetylacetonate, and the molecular formula is as follows: C20H28ZrO 8.
The ultraviolet absorber of the present invention is a benzophenone-based ultraviolet absorber, preferably an ultraviolet absorber UV-214, UV-9 or UV-531, most preferably an ultraviolet absorber UV-214, and the above-mentioned materials are commercially available.
The modified nano silicon dioxide is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare suspension with the mass fraction of 3-8%, and dispersing for 30-40 minutes at 5000 r/min; adding 3% by volume hydrochloric acid to adjust the pH value of the suspension to 4.0-4.2, and stirring in water bath for 30-35 min; adding sodium hexametaphosphate solution with the mass fraction of 2.5-3.0%, dispersing for 30-40 minutes at 2000r/min, standing for 6-8 hours, taking the upper suspension, drying and grinding.
Preparing nano silicon dioxide into suspension, dispersing, adjusting pH, adding sodium hexametaphosphate, continuously dispersing, wherein the obtained suspension has strong stability, good uniformity and improved compatibility with resin, generating a little impurity after being dispersed for 30-40 minutes at 2000r/min and standing for 6-8 hours, and only taking the upper suspension and removing the bottom impurity.
Preferably, the temperature of the water bath is 85-90 ℃.
Preferably, the amount of sodium hexametaphosphate used is 0.5 to 1.2 g.
The preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing FEVE fluorocarbon resin, bisphenol A epoxy resin and a solvent, adding 0.01-0.05 part by weight of a catalyst, and stirring and reacting for 1-1.2 hours at the temperature of 75-80 ℃; then adding the modified nano-silica, the ultraviolet absorbent and the rest catalyst, continuously stirring and reacting for 2-3 hours, and naturally cooling to obtain the nano-silica modified ultraviolet light-absorbing material.
Preferably, the stirring speed of the stirring reaction is 200-250 r/min.
The using method of the protective coating comprises the following steps: the surface of the outdoor power equipment is directly coated after being cleaned, so that the outdoor power equipment is protected, and the corrosion resistance and weather resistance of the outdoor power equipment are improved.
Example 1
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 30 parts of FEVE fluorocarbon resin, 12 parts of bisphenol A epoxy resin, 5 parts of modified nano silicon dioxide, 25 parts of solvent, 0.02 part of catalyst and 0.8 part of ultraviolet absorbent.
The solvent is methyl oleate and cyclohexanone in a weight ratio of 1.5: 1 in the composition of claim 1. The catalyst is zirconium acetylacetonate. The ultraviolet absorbent is ultraviolet absorbent UV-214.
The modified nano silicon dioxide is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare suspension with the mass volume fraction of 3%, and dispersing for 30 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.0, and stirring in water bath for 30 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.5 percent, dispersing for 30 minutes at 2000r/min, standing for 6 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 85 ℃. The amount of sodium hexametaphosphate was 0.5 g.
The preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing FEVE fluorocarbon resin, bisphenol A epoxy resin and a solvent, adding 0.01 part by weight of a catalyst, and stirring and reacting for 1 hour at the temperature of 75 ℃; and then adding the modified nano silicon dioxide, the ultraviolet absorbent and the rest catalyst, continuously stirring for reaction for 2 hours, and naturally cooling to obtain the nano silicon dioxide catalyst.
The stirring speed of the stirring reaction was 200 r/min.
Example 2
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 45 parts of FEVE fluorocarbon resin, 20 parts of bisphenol A epoxy resin, 10 parts of modified nano silicon dioxide, 35 parts of solvent, 0.1 part of catalyst and 1.5 parts of ultraviolet absorbent.
The solvent is methyl oleate and cyclohexanone in a weight ratio of 2.3: 1 in the composition of claim 1. The catalyst is zirconium acetylacetonate. The ultraviolet absorber is UV-214.
The modified nano silicon dioxide is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare suspension with the mass fraction of 8%, and dispersing for 40 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.2, and stirring in water bath for 35 min; and adding a sodium hexametaphosphate solution with the mass fraction of 3.0 percent, dispersing for 40 minutes at 2000r/min, standing for 8 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 90 ℃. The amount of sodium hexametaphosphate was 1.2 g.
The preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing FEVE fluorocarbon resin, bisphenol A epoxy resin and a solvent, adding 0.05 part by weight of a catalyst, and stirring and reacting for 1.2 hours at the temperature of 75 ℃; and then adding the modified nano silicon dioxide, the ultraviolet absorbent and the rest catalyst, continuously stirring for reaction for 3 hours, and naturally cooling to obtain the nano silicon dioxide catalyst.
The stirring speed of the stirring reaction was 250 r/min.
Example 3
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 38 parts of FEVE fluorocarbon resin, 16 parts of bisphenol A epoxy resin, 7 parts of modified nano silicon dioxide, 32 parts of solvent, 0.06 part of catalyst and 1.1 part of ultraviolet absorbent.
The solvent is cyclohexanone and butyl acetate, and the weight ratio of the cyclohexanone to the butyl acetate is 1: 2.3 of the composition. The catalyst is zirconium acetylacetonate. The ultraviolet absorbent is ultraviolet absorbent UV-214.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 5.2%, and dispersing for 35 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.1, and stirring in water bath for 32 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.8 percent, dispersing at 2000r/min for 38 minutes, standing for 7 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 90 ℃. The amount of sodium hexametaphosphate was 1.0 g.
The preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing FEVE fluorocarbon resin, bisphenol A epoxy resin and a solvent, adding 0.02 part by weight of a catalyst, and stirring and reacting for 1.0 hour at the temperature of 80 ℃; and then adding the modified nano silicon dioxide, the ultraviolet absorbent and the rest catalyst, continuously stirring and reacting for 2.5 hours, and naturally cooling to obtain the nano silicon dioxide catalyst.
The stirring speed of the stirring reaction was 200 r/min.
Example 4
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 32 parts of FEVE fluorocarbon resin, 14 parts of bisphenol A epoxy resin, 6 parts of modified nano silicon dioxide, 27 parts of solvent, 0.03 part of catalyst and 1.0 part of ultraviolet absorbent.
The solvent is cyclohexanone and butyl acetate, and the weight ratio of the cyclohexanone to the butyl acetate is 1: 2 in the presence of a surfactant. The catalyst is zirconium acetylacetonate. The ultraviolet absorbent is ultraviolet absorbent UV-9.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 6.5%, and dispersing for 35 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.1, and stirring in water bath for 32 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.8 percent, dispersing for 40 minutes at 2000r/min, standing for 6 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 90 ℃. The amount of sodium hexametaphosphate was 0.72 g.
The preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing FEVE fluorocarbon resin, bisphenol A epoxy resin and a solvent, adding 0.02 part by weight of a catalyst, and stirring and reacting for 1 hour at the temperature of 75 ℃; and then adding the modified nano-silica, the ultraviolet absorbent and the rest catalyst, continuously stirring and reacting for 2.2 hours, and naturally cooling to obtain the nano-silica modified ultraviolet light-absorbing material.
The stirring speed of the stirring reaction was 230 r/min.
Example 5
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 40 parts of FEVE fluorocarbon resin, 15 parts of bisphenol A epoxy resin, 8 parts of modified nano silicon dioxide, 30 parts of solvent, 0.08 part of catalyst and 1.1 parts of ultraviolet absorbent.
The solvent is cyclohexanone and butyl acetate, and the weight ratio of the cyclohexanone to the butyl acetate is 1: 3 in the presence of a surfactant. The catalyst is zirconium acetylacetonate. The ultraviolet absorbent is ultraviolet absorbent UV-531.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 7.2%, and dispersing for 40 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.2, and stirring in water bath for 35 min; and adding a sodium hexametaphosphate solution with the mass fraction of 3.0 percent, dispersing for 40 minutes at 2000r/min, standing for 8 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 88 ℃. The amount of sodium hexametaphosphate was 0.9 g.
The preparation method of the protective coating for outdoor power equipment in the embodiment refers to the embodiment 3.
Example 6
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 42 parts of FEVE fluorocarbon resin, 18 parts of bisphenol A epoxy resin, 9 parts of modified nano silicon dioxide, 34 parts of solvent, 0.09 part of catalyst and 1.3 parts of ultraviolet absorbent.
The solvent is methyl oleate and cyclohexanone in a weight ratio of 1.2: 1 in the composition of claim 1. The catalyst is zirconium acetylacetonate. The ultraviolet absorbent is ultraviolet absorbent UV-214.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 4.1%, and dispersing for 30 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.0, and stirring in water bath for 30 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.7 percent, dispersing for 30 minutes at 2000r/min, standing for 6 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 90 ℃. The amount of sodium hexametaphosphate was 1.1 g.
The preparation method of the protective coating for outdoor power equipment in the embodiment refers to the embodiment 3.
Example 7
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 36 parts of FEVE fluorocarbon resin, 15 parts of bisphenol A epoxy resin, 7 parts of modified nano silicon dioxide, 32 parts of solvent, 0.06 part of catalyst and 1.2 parts of ultraviolet absorbent.
The solvent is methyl oleate and cyclohexanone in a weight ratio of 2.0: 1 in the composition of claim 1.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 3.4%, and dispersing for 30 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.1, and stirring in water bath for 32 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.9 percent, dispersing at 2000r/min for 38 minutes, standing for 6.5 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 87 ℃. The amount of sodium hexametaphosphate was 0.82 g.
The preparation methods of the catalyst, the ultraviolet absorber and the outdoor power equipment protective coating in the embodiment refer to the embodiment 3.
Example 8
The protective coating for outdoor power equipment is prepared from the following raw materials in parts by weight: 34 parts of FEVE fluorocarbon resin, 13 parts of bisphenol A epoxy resin, 8 parts of modified nano silicon dioxide, 28 parts of solvent, 0.04 part of catalyst and 1.3 parts of ultraviolet absorbent.
The solvent is methyl oleate and butyl acetate in a weight ratio of 1: 1, in a mixture of the components.
The modified nano silicon dioxide is obtained by the following preparation method: taking nano silicon dioxide powder, adding water to prepare a suspension with the mass fraction of 4.8%, and dispersing for 36 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.1, and stirring in water bath for 33 min; and adding a sodium hexametaphosphate solution with the mass fraction of 2.8 percent, dispersing for 36 minutes at 2000r/min, standing for 7.5 hours, taking the upper suspension, drying and grinding.
The temperature of the water bath was 90 ℃. The amount of sodium hexametaphosphate was 1.05 g.
The preparation methods of the catalyst, the ultraviolet absorber and the outdoor power equipment protective coating in the embodiment refer to the embodiment 3.
Comparative example 1
The composition of the protective coating for outdoor electrical equipment of the comparative example is substantially the same as that of example 1, except that: the use of bisphenol a type epoxy resin is omitted.
Comparative example 2
This comparative example is an outdoor electrical equipment protective coating of substantially the same composition as example 2, except that: nanosilica was used without modification.
Comparative example 3
This comparative example is an outdoor electrical equipment protective coating of substantially the same composition as example 3, except that: FEVE fluorocarbon resin and bisphenol A epoxy resin are mixed according to the weight ratio of 1: 1, and the total weight parts of the two raw materials are the same as that of the example 3, namely 27 weight parts of FEVE fluorocarbon resin and 27 weight parts of bisphenol A epoxy resin.
Comparative example 4
This comparative example is an outdoor electrical equipment protective coating of substantially the same composition as example 3, except that: the solvent is cyclohexanone.
Comparative example 5
This comparative example is an outdoor electrical equipment protective coating of substantially the same composition as example 3, except that: the use of ultraviolet absorbers is omitted.
Comparative example 6
The composition of the protective coating for outdoor electrical equipment of this comparative example is the same as that of example 3, except that: the modified nano silicon dioxide is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare a suspension with the mass fraction of 5.2%, adding a sodium hexametaphosphate solution with the mass fraction of 2.8%, wherein the using amount of the sodium hexametaphosphate is 1.0g, dispersing for 38 minutes at 5000r/min, adding hydrochloric acid with the volume fraction of 3% to adjust the pH value of the suspension to be 4.1, and stirring in a water bath at 90 ℃ for 32 minutes; standing for 7h, taking the upper suspension, drying and grinding.
Evaluation of Effect
Spraying the prepared coating on the treated bottom plate, controlling the thickness to be 30-35 microns, and then curing at room temperature, drying and testing.
The impact strength test is carried out according to the method specified in GB/T1732-93 "determination method of impact resistance of paint film".
Adhesion test is carried out according to the method specified in GB/T1720-79(89) 'paint film adhesion test method'.
Thirdly, the flexibility test is carried out according to the method specified in GB/T1731-93 paint film flexibility determination method.
And fourthly, testing the neutral salt spray resistance according to a method specified in GB/T1771-91 'determination of neutral salt spray resistance of colored paint and varnish'. The evaluation of the results is carried out according to the method specified in GB/T1740-2007 determination of the resistance to moist heat of paint films.
And fifthly, performing artificial accelerated aging test by referring to the method specified in GB/T1865-2009 'xenon arc radiation filtered by artificial weathering and artificial radiation exposure of colored paint and varnish' and GB/T16422.3-2014 'method for exposing light source in plastic laboratory 3 part of fluorescent ultraviolet lamp'. The evaluation of the results is carried out according to the method specified in GB/T1766-2008 "method for rating the ageing of paints and varnishes coating
The results of the performance tests of the coatings obtained in examples 1 to 3 of the present invention and comparative examples 1 to 6 are shown in Table 1.
TABLE 1 outdoor power equipment protective coating film performance test results
The results in Table 1 show that the protective coating for outdoor power equipment has the advantages of impact strength of 50N cm, flexibility of 1mm, excellent water resistance, acid resistance and alkali resistance, salt spray accelerated corrosion test evaluation of grade 1, artificial accelerated light aging test, light loss rate of below 2% at 1000h, pulverization grade of 0, light loss rate of below 6% at 2000h, pulverization grade of 0, and excellent weather resistance, corrosion resistance and aging resistance.
Comparative example 1 omitting the use of bisphenol a type epoxy resin, table 1 shows that although the impact strength, adhesion, flexibility of the resulting coating are comparable to those of example 1, the water resistance, acid resistance and alkali resistance are reduced, the light loss rate in the artificial accelerated aging test is increased, and the addition of bisphenol a type epoxy resin to the protective coating according to the present invention improves the weather resistance and aging resistance of the coating.
Comparative example 2 shows that the nano-silica modified by the method of the present invention has a beneficial effect on the anti-aging performance of the coating, because the nano-silica is not modified, the performance of the salt spray accelerated corrosion test (5000 h) is reduced, and the light loss rate is increased and the chalking phenomenon occurs in the artificial accelerated aging test.
Comparative example 3 the use ratio of FEVE fluorocarbon resin and bisphenol A epoxy resin was adjusted differently from example 3, and the performance of the obtained coating was reduced in impact strength, adhesion, flexibility, corrosion resistance, aging resistance and the like as compared with example 3, showing that the proper proportion of the film forming substance has an important influence on the coating performance.
The solvent of comparative example 4 is cyclohexanone, and the adhesion, weather resistance, corrosion resistance and the like of the coating are reduced compared with those of example 3.
Comparative example 5 omits the use of an ultraviolet absorber, and the resulting coating had not only reduced aging resistance, but also reduced weather resistance and corrosion resistance as compared with example 3.
Comparative example 6 changes the modification method of nano-silica, the obtained coating has reduced impact strength, reduced water resistance, acid resistance, alkali resistance, accelerated salt spray test and aging resistance, and shows that the modification method of nano-silica used in the invention is reasonable, and can be better integrated into the coating and improve the quality of the coating.
The experiments and results show that the protective coating for outdoor power equipment has reasonable raw material composition, the preparation method is proper, and the obtained coating has obvious corrosion resistance, weather resistance and ageing resistance.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The protective coating for outdoor power equipment is characterized by being prepared from the following raw materials in parts by weight: 30-45 parts of FEVE fluorocarbon resin, 12-20 parts of bisphenol A epoxy resin, 5-10 parts of modified nano silicon dioxide, 25-35 parts of solvent, 0.02-0.1 part of catalyst, 0.8-1.5 parts of ultraviolet absorbent,
the solvent is more than two of methyl oleate, cyclohexanone and butyl acetate,
the modified nano silicon dioxide is obtained by the following preparation method: adding water into nano silicon dioxide powder to prepare suspension with the mass fraction of 3-8%, and dispersing for 30-40 minutes at 5000 r/min; adding hydrochloric acid with volume fraction of 3% to adjust the pH value of the suspension to 4.0-4.2, and stirring in water bath for 30-35 min; adding sodium hexametaphosphate solution with the mass fraction of 2.5-3.0%, dispersing for 30-40 minutes at 2000r/min, standing for 6-8 hours, taking the upper suspension, drying and grinding.
2. The outdoor power equipment protective coating of claim 1, wherein: the catalyst is zirconium acetylacetonate.
3. The outdoor power equipment protective coating of claim 2, wherein: the ultraviolet absorbent is benzophenone ultraviolet absorbent.
4. The outdoor power equipment protective coating of claim 3, wherein: the ultraviolet absorbent is ultraviolet absorbent UV-214, UV-9 or UV-531.
5. The outdoor power equipment protective coating of claim 1, wherein: the temperature of the water bath is 85-90 ℃.
6. The outdoor power equipment protective coating of claim 5, wherein: the amount of the sodium hexametaphosphate is 0.5-1.2 g.
7. The method of claim 6, wherein the step of preparing the protective coating for outdoor power equipment comprises: the preparation method of the protective coating for the outdoor power equipment comprises the following steps: firstly, mixing the FEVE fluorocarbon resin, the bisphenol A epoxy resin and a solvent, adding 0.01-0.05 part by weight of a catalyst, and stirring and reacting for 1-1.2 hours at the temperature of 75-80 ℃; then adding the modified nano-silica, the ultraviolet absorbent and the rest catalyst, continuously stirring and reacting for 2-3 hours, and naturally cooling to obtain the nano-silica modified ultraviolet light-absorbing material.
8. The method of claim 7, wherein the step of preparing the protective coating for outdoor power equipment comprises: the stirring speed of the stirring reaction is 200-250 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142264.3A CN109836917B (en) | 2019-02-26 | 2019-02-26 | Protective coating for outdoor power equipment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142264.3A CN109836917B (en) | 2019-02-26 | 2019-02-26 | Protective coating for outdoor power equipment and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109836917A CN109836917A (en) | 2019-06-04 |
| CN109836917B true CN109836917B (en) | 2021-03-12 |
Family
ID=66885045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910142264.3A Active CN109836917B (en) | 2019-02-26 | 2019-02-26 | Protective coating for outdoor power equipment and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109836917B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354990A (en) * | 2021-06-16 | 2021-09-07 | 苏州天禄建筑工程有限责任公司 | Cold-feel-resistant fluorocarbon coating and preparation method thereof |
| CN114773925A (en) * | 2022-04-08 | 2022-07-22 | 江苏大亿智能科技有限公司 | Metal surface anticorrosive coating and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304502C (en) * | 2004-06-23 | 2007-03-14 | 宁波艾利特科技发展有限公司 | Curing nanometer building paint from fluoride carbon resin at normal temperature and production thereof |
| CN101538434A (en) * | 2009-04-28 | 2009-09-23 | 济南华临化工有限公司 | Fluorocarbon finish paint for corrosion protection of wind power equipment and preparation method thereof |
-
2019
- 2019-02-26 CN CN201910142264.3A patent/CN109836917B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109836917A (en) | 2019-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109836917B (en) | Protective coating for outdoor power equipment and preparation method thereof | |
| CN109601001B (en) | Benzophenone derivative, aqueous copolymer dispersion, and aqueous coating composition | |
| CN109294382B (en) | Super-weather-resistant acid-rain-resistant stain-resistant water-based inorganic nano ceramic coating and preparation method thereof | |
| CN104559686B (en) | A kind of preparation method of UV-Curable Epoxy Acrylate Coating | |
| CN110713760A (en) | Water-based acrylic floor paint and preparation method thereof | |
| CN111718647B (en) | Environment-friendly water-based UV coating and preparation method thereof | |
| CN110317526B (en) | High-water-seepage-resistance powder coating and preparation method thereof | |
| CN103756519A (en) | UV (Ultraviolet) white base paint with high covering power | |
| CN112745766B (en) | Outdoor floor bi-component water-based asphalt anticorrosive paint and preparation method thereof | |
| CN105505143B (en) | Aging-proof building paint that a kind of nano composite material is modified and preparation method thereof | |
| CN108485452B (en) | Water-based paint suitable for wooden products and preparation method thereof | |
| KR102269267B1 (en) | High weatherability infrared low emissivity paint material compositions | |
| CN105295596A (en) | Highly weather-resistant fluorescent paint | |
| CN112322131A (en) | Bright and super-weather-resistant adhesive paint for exterior wall and preparation method thereof | |
| RU2333925C1 (en) | Polymer composition for coating | |
| CN113462248A (en) | High-stability water-based paint suitable for various substrates and preparation method thereof | |
| CN108753020B (en) | Weather-resistant fireproof coating for ultrathin steel structure and preparation method thereof | |
| JP6477646B2 (en) | Dispersion and method for producing the same, paint, coating film | |
| CN110982396A (en) | High-corrosion-resistance color plate coil coating | |
| CN114149696B (en) | Modified calcium carbonate, preparation method, aging-resistant exterior wall coating and application | |
| CN115895438B (en) | Transparent organic silicon coating for polycarbonate surface and preparation method thereof | |
| CN109467988A (en) | A kind of thermosetting powder coating of UV resistant | |
| KR20150049206A (en) | Method for powder coating with high impact resistance | |
| CN103725129A (en) | High weather-proof finishing coat for megawatt wind power blade | |
| CN114672214A (en) | Ultraviolet-resistant automobile paint and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |