CN110358404B - Solvent-free epoxy weather-resistant paint for outdoor weighing apparatus and preparation process thereof - Google Patents
Solvent-free epoxy weather-resistant paint for outdoor weighing apparatus and preparation process thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/43—Thickening agents
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention relates to a solvent-free epoxy weather-resistant paint for an outdoor weighing apparatus and a preparation process thereof, wherein the solvent-free epoxy weather-resistant paint comprises the following components in percentage by weight: hydrogenated bisphenol A type epoxy resin, 15% -30%; 5% -8% of active diluent; 0.1 to 1.5 percent of assistant A; 0.2 to 2 percent of assistant B; 20% -30% of pigment; 15% -30% of filler; 0.5 to 2 percent of thickening agent; 15 to 20 percent of curing agent. The invention provides a solvent-free epoxy weather-resistant paint for an outdoor weighing apparatus, which can meet various requirements of the current society on metal paint, and has the basic requirements of good mechanical property, acid and alkali resistance, low VOC, low heavy metal content and the like, and also has good weather resistance.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a solvent-free epoxy weather-resistant coating for an outdoor weighing apparatus and a preparation process thereof.
Background
An outdoor weighing apparatus is a measuring instrument which is applied outdoors and determines the mass of an object by the gravity acting on the object.
The outdoor weighing apparatus usually uses polyurethane finish or polyurethane primer-topcoat coating, although the polyurethane coating has excellent weather resistance, the content of VOCS (volatile organic Compounds) in the polyurethane coating is high, and the national development trend of gradually reducing VOCS emission cannot be met; meanwhile, compared with the application of outdoor weighing apparatus, the hardness, wear resistance, medium resistance and other properties are also improved.
The solvent-free coating, especially the solvent-free epoxy coating, gradually enters the selective application range of outdoor weighing apparatus construction due to the excellent performance advantages of high solid content, ultralow VOC emission, high film gloss, high hardness, wear resistance, heat resistance, chemical resistance and the like.
However, the solvent-free epoxy coating mainstream in the market at present has low VOCS performance but poor weather resistance, so that the solvent-free epoxy coating is mainly suitable for indoor application environment and restricts the popularization and application of the solvent-free epoxy coating in the open air.
Therefore, the development of the solvent-free epoxy weather-resistant paint which can be used outdoors is very consistent with the development trend of gradually reducing VOCS emission in China, and simultaneously can improve the performances such as hardness, wear resistance, medium resistance and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a solvent-free epoxy weather-resistant paint for an outdoor weighing apparatus and a preparation process thereof.
The technical scheme for realizing the purpose of the invention is as follows: the invention provides a solvent-free epoxy weather-resistant paint for an outdoor weighing apparatus, which comprises the following components in percentage by weight: hydrogenated bisphenol A type epoxy resin, 15% -30%; 5% -8% of active diluent; 0.1 to 1.5 percent of assistant A; 0.2 to 2 percent of assistant B; 20% -30% of pigment; 15% -30% of filler; 0.5 to 2 percent of thickening agent; 10 to 20 percent of curing agent.
Preferably, the paint comprises the following components in percentage by weight: hydrogenated bisphenol a type epoxy resin, 23.63%; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 1.86 percent of auxiliary agent B; pigment, 22.78%; filler, 27.01%; 0.84% of thickening agent; 15.61% of curing agent.
According to the technical scheme, the reactive diluent is dodecyl-tetradecyl glycidyl ether, and the thickening agent is polyether polyurethane associated aqueous rheological additive.
The technical scheme is that the auxiliary agent A comprises the following components in percentage by weight: 30-50% of a dispersing agent, 10-30% of a defoaming agent and 10-30% of a leveling agent, wherein the dispersing agent is polyether polyamide, the defoaming agent is one or more of dimethylpolysiloxane containing fumed silica or organic modified polysiloxane, and the leveling agent belongs to an organic silicon modified surfactant, and specifically is polyether modified polydimethylsiloxane and alkyl modified polysiloxane.
In the technical scheme, the auxiliary agent B is a mixture of an ultraviolet light absorbent and a light stabilizer.
The pigment in the technical scheme is rutile titanium dioxide.
The filler in the technical scheme comprises the following components in parts by weight: 15-25% of talcum powder, 5-15% of mica powder, 15-25% of antirust pigment and 40-60% of natural barium sulfate, wherein the antirust pigment is one or more of modified aluminum tripolyphosphate, calcium phosphate and zinc phosphate.
According to the technical scheme, the thickening agent is fumed silica.
The curing agent in the technical scheme comprises the following components in parts by weight: the curing accelerator comprises, by weight, 65-75% of IPDA, 5-10% of a curing accelerator and 5-15% of hydrogenated epoxy resin, wherein the curing accelerator is one or more of N-aminoethyl piperazine and m-xylylenediamine.
The invention also provides a preparation process of the solvent-free epoxy weather-resistant paint for the outdoor weighing apparatus, which comprises the following steps:
weighing the components according to the weight percentage, wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 90-95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5-10% of the total amount of the hydrogenated bisphenol A epoxy resin;
step two, putting a first part of hydrogenated bisphenol A epoxy resin and an active diluent into a dispersion kettle, stirring at a high speed for 2500r/min, dispersing for 10min, reducing the speed to 800r/min, putting the prepared assistant A in proportion while stirring, increasing the speed to 2000r/min, fully stirring for 15min, reducing the speed to 800r/min, putting the pigment, the assistant B and the filler in proportion while stirring, stirring at a high speed for 2500r/min and 30min, transferring into a sand mill, controlling the fineness of the sand-milled paint to be less than or equal to 20 mu m, and adding a thickening agent to adjust the viscosity to be used as a component A;
step three, putting the curing agent into a dispersion kettle, stirring at the speed of 300r/min, adding a second part of hydrogenated bisphenol A epoxy resin while stirring, heating to 40-50 ℃, preserving heat for 1-2 h, adding a curing accelerator, stirring at 300r/min, dispersing for 10min, uniformly stirring, preserving heat for 30min, measuring the amine value, filtering and packaging after qualification to serve as a component B;
and step four, uniformly mixing the component A and the component B according to the proportion of 4.4-6.9: 1 before use.
After the technical scheme is adopted, the invention has the following positive effects:
(1) the invention provides a solvent-free epoxy weather-resistant paint for an outdoor weighing apparatus, which can meet various requirements of the current society on metal paint, and has the basic requirements of good mechanical property, acid and alkali resistance, low VOC, low heavy metal content and the like, and also has good weather resistance.
(2) The epoxy resin of the present invention is a hydrogenated bisphenol A type epoxy resin, which is similar to bisphenol A type epoxy resin in molecular structure, and therefore it inherits the properties of bisphenol A type epoxy resin. Has excellent physical and mechanical properties, medium resistance, excellent adhesive force and the like. The benzene ring structure of the epoxy resin can be changed, and the problem of double bond fracture of the benzene ring is solved, so that the weather resistance is improved. The crosslinking time of the hydrogenated bisphenol A epoxy resin and the curing agent is longer than that of the bisphenol A epoxy resin, and the pot life and the drying time are prolonged.
(3) According to the invention, the addition reaction of the epoxy resin and the curing agent is adopted, and a part of chain segments of the product of the component B is firstly formed, so that the final reaction rates are different, the flatness of a paint film is further influenced, and the gloss is reduced. The method does not need to add additional raw materials, does not influence the performance of the coating, and does not increase additional cost.
(4) The filler of the invention uses natural barium sulfate which usually presents thick plate-shaped or columnar crystals, the density and fineness of the natural barium sulfate are not higher than those of precipitated barium sulfate, but the natural barium sulfate completely maintains the crystal form of barite, and has excellent specific surface area, surface atom number and surface energy which are extremely strong, thereby causing great change of optical performance, and having better weather resistance than the precipitated barium sulfate, so that the product of the invention has better weather resistance.
(5) The thickening agent uses fumed silica, so that the thickening effect is achieved, the wear resistance and the aging resistance can be improved, the high fluidity and the small size effect of the fumed silica enable the surface of the material to be more compact and fine, the friction coefficient to be reduced, and the wear resistance of the material to be greatly enhanced due to the high strength of the nano particles; can also strongly reflect ultraviolet rays, and can greatly reduce the degradation of the epoxy resin by the ultraviolet rays when being added into the epoxy resin, thereby achieving the purpose of delaying the aging of the material.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.
The hydrogenated bisphenol A epoxy resin used was commercially available Korean ST 3000.
(example 1)
Step one, weighing the components according to the weight percentage, and hydrogenating 17.47 percent of bisphenol A type epoxy resin; 5.24% of reactive diluent; 1.21% of an auxiliary agent A; 1.92 percent of auxiliary agent B; pigment, 23.58%; filler, 37.04%; 0.87% of thickening agent; curing agent, 12.67%. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step two, putting the first part of hydrogenated bisphenol A epoxy resin and the reactive diluent into a dispersion kettle, stirring at a high speed for 2500r/min, dispersing for 10min, reducing the speed to 800r/min, putting the prepared assistant A in proportion while stirring, increasing the speed to 2000r/min, fully stirring for 15min, reducing the speed to 800r/min, putting the pigment, the assistant B and the filler in proportion while stirring, stirring at a high speed for 2500r/min and 30min, transferring into a sand mill, controlling the fineness of the sand-milled paint to be less than or equal to 20 mu m, and adding a thickening agent to adjust the viscosity to be used as a component A.
And step three, putting the curing agent into a dispersion kettle, stirring at the speed of 300r/min, adding a second part of hydrogenated bisphenol A epoxy resin while stirring, heating to 40-50 ℃, preserving heat for 1-2 h, adding a curing accelerator, stirring at 300r/min, dispersing for 10min, uniformly stirring, preserving heat for 30min, measuring the amine value, filtering and packaging after qualification to obtain the component B.
And step four, uniformly mixing the component A and the component B according to the ratio of 4.5:1 before use.
(example 2)
Example 2 differs from example 1 in that,
step 1, weighing the components according to the weight percentage, namely 22.13 percent of hydrogenated bisphenol A type epoxy resin; reactive diluent, 6.64%; 1.2 percent of auxiliary agent A; 1.88 percent of assistant B; pigment, 22.98%; filler, 29.43%; 0.85% of thickening agent; curing agent, 14.89%. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 93 percent of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 7 percent of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the proportion of 5.2:1 before use.
(example 3)
Example 3 differs from example 1 in that,
step 1, weighing the components according to the weight percentage, and hydrogenating 23.63 percent of bisphenol A type epoxy resin; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 1.86 percent of auxiliary agent B; pigment, 22.78%; filler, 27.01%; 0.84% of thickening agent; 15.61% of curing agent. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 93 percent of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 7 percent of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the ratio of 6.5:1 before use.
(example 4)
Example 4 differs from example 1 in that,
step one, weighing the components according to the weight percentage, and 26.56 percent of hydrogenated bisphenol A type epoxy resin; reactive diluent, 7.97%; 1.17 percent of auxiliary agent A; 1.82 percent of auxiliary agent B; pigment, 22.41%; filler, 22.23%; 0.83% of thickening agent; 17.01 percent of curing agent. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the ratio of 4.8:1 before use.
(example 5)
Example 5 differs from example 1 in that,
weighing the components according to the weight percentage, and 29.39% of hydrogenated bisphenol A type epoxy resin; 8.82% of reactive diluent; 1.14 percent of auxiliary agent A; 1.8 percent of assistant B; pigment, 22.04%; filler, 17.67%; 0.82% of thickening agent; 18.3 percent of curing agent. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the proportion of 5.5:1 before use.
(example 6)
Example 6 differs from example 1 in that,
step one, weighing the components according to the weight percentage, and hydrogenating 23.63 percent of bisphenol A type epoxy resin; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 2.42 percent of auxiliary agent B; pigment, 22.78%; 26.45 percent of filler; 0.84% of thickening agent; 15.61% of curing agent. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the proportion of 5.8:1 before use.
(example 7)
Example 7 differs from example 1 in that,
step one, weighing the components according to the weight percentage, and hydrogenating 23.63 percent of bisphenol A type epoxy resin; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 1.86 percent of auxiliary agent B; 30% of pigment; filler, 19.79%; 0.84% of thickening agent; 15.61% of curing agent. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the ratio of 6.2:1 before use.
(example 8)
Example 8 differs from example 1 in that,
step one, weighing the components according to the weight percentage, and hydrogenating 23.63 percent of bisphenol A type epoxy resin; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 1.86 percent of auxiliary agent B; pigment, 22.78%; filler, 24.19%; 0.84% of thickening agent; curing agent, 18.43%. Wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 95% of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 5% of the total amount of the hydrogenated bisphenol A epoxy resin.
And step four, uniformly mixing the component A and the component B according to the ratio of 6.8:1 before use.
The material ratios for examples 1-8 are given in the following table:
the weathering performance of examples 1-8 is shown in the following table:
| scheme(s) | Test time, h | First day color difference | Color difference on the tenth day | Final color difference | Loss of light,% |
| Example 1 | 500 | 0.71 | 2.06 | 3.8 | 21.38 |
| Example 2 | 500 | 0.45 | 1.31 | 2.64 | 13.48 |
| Example 3 | 500 | 0.29 | 1.01 | 1.34 | 12.52 |
| Example 4 | 500 | 0.6 | 1.94 | 1.88 | 14.7 |
| Example 5 | 500 | 0.43 | 1.87 | 2.01 | 15.26 |
| Example 6 | 500 | 1.1 | 1.99 | 2.45 | 7.11 |
| Example 7 | 500 | 0.22 | 1.34 | 1.89 | 13.55 |
| Example 8 | 500 | 1.13 | 1.7 | 2.31 | 23.4 |
Referring to the above table, examples 1-5, we can see that the weathering performance of the coating is better when the resin is used at 23.63, 26.56 and 29.39 by varying the amount of resin and adjusting the amount of reactive diluent, curing agent and filler natural barium sulfate accordingly.
Example 6 the amount of the assistant B adjusted on the basis of example 3 shows that the more the assistant B is, the better, because the assistant B is a hindered amine, and the progress of the photo-oxidative aging reaction is suppressed by decomposing the hydroperoxide generated in the photochemical reaction and capturing the radical therein, but the excessive use of the assistant B is also an alicyclic amine structure, which adversely affects the suppression effect.
Example 7 the amount of the weather resistant pigment was adjusted based on example 3, it is obvious that the weather resistant pigment has a significant effect on the weather resistance, and the rutile type titanium dioxide used has a higher density and reflectance.
Example 8 adjusting the amount of curing agent can also affect the weatherability of the paint.
In conclusion, example 3 is the best technical solution for weather resistance.
In addition, for the outdoor balancer, in addition to the weather resistance, the wear resistance and the dielectric resistance of the coating are also important, and the wear resistance and the dielectric resistance of examples 1 to 8 are shown in the following table:
as exemplified by wear resistance: 1. effect of the liquid (resin and curing agent) on the coating. Firstly, the liquid itself should have good wear resistance. Currently, the abrasion resistance of epoxy resins is good in itself. Secondly, the ratio of the liquid material to the filler is also important because the internal structure of the formed coating is different due to different adding amount of the filler in the coating, so that the failure mechanisms are different. When the amount of filler added in the coating is less, there is more liquid around the filler. The wear of the coating occurs mainly on the liquid material and, therefore, the amount of wear is greater. With the addition of the filler, a proper amount of liquid material is wrapped around the filler, so that the defects in the coating are greatly reduced, and the hardness of the coating is higher. In this case, the wear mainly occurs on the harder filler, so that the amount of wear is greatly reduced. When the addition amount of the filler is larger than the critical proportion, the embedding degree of the liquid material to the filler is reduced due to the increase of the filler, the filler is easy to fall off during abrasion, and a defect is formed on the surface of the coating, so that the abrasion of the coating is accelerated. There are 2 cases of wear, one of which is abrasive wear, for which the larger the filler particle size, the better the wear resistance. The second wear condition is frictional wear, at which time the smaller the filler particle size, the better the wear resistance. We have found that fillers of a single particle size tend to have a high number of interparticle voids when forming a coating, these voids often being occupied by liquid and gas pores. When fillers with different particle sizes are added into the coating, the small particles fill gaps among the large particles to form tighter packing, so that defects in the coating are greatly reduced.
Such factors are also present in the case of resistance to media and salt spray, and can also be influenced by adjuvants.
The pigment ratio of example 3 is most suitable, SO the wear resistance, medium resistance and salt spray resistance are good, the liquid material part of examples 1 and 2 is less, but the critical filler volume concentration is not exceeded, the coating uniformity is influenced, and the effect is shown when the pigment ratio resists 10% H2SO4 solution.
The liquid material portions of examples 4, 5 and 8 are too many. In particular, in example 5, it is clear that the amount of the liquid material is too much and the amount of the filler is too little, so that a large amount of the filler sinks, the resin overflows from the surface, and the wear resistance of the filler which cannot play a wear-resistant role is obviously reduced.
Examples 6 and 7, although the pigment ratio was close to that of example 3, we observed that the amount of the auxiliary B (weather-resistant auxiliary) used in example 6 was large, and as mentioned above, the alicyclic amine structure of the auxiliary B slightly affects the degree of curing by a small excess, which is reflected in a slight deficiency in the paint film properties. In example 7, the proportion of pigment in the filler is too high, and the proportion of functional filler is too small, so that the paint film performance is obviously affected.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A preparation process of a solvent-free epoxy weather-resistant coating for an outdoor weighing apparatus is characterized by comprising the following steps:
step one, weighing each component according to the weight percentage, and 23.63 percent of hydrogenated bisphenol A type epoxy resin; reactive diluent, 7.09%; 1.18 percent of auxiliary agent A; 1.86 percent of auxiliary agent B; pigment, 22.78%; filler, 27.01%; 0.84% of thickening agent; 15.61% of curing agent; wherein the hydrogenated bisphenol A epoxy resin is divided into two parts, the first part of the hydrogenated bisphenol A epoxy resin accounts for 93 percent of the total amount of the hydrogenated bisphenol A epoxy resin, and the second part of the hydrogenated bisphenol A epoxy resin accounts for 7 percent of the total amount of the hydrogenated bisphenol A epoxy resin;
step two, putting a first part of hydrogenated bisphenol A epoxy resin and an active diluent into a dispersion kettle, stirring at a high speed for 2500r/min, dispersing for 10min, reducing the speed to 800r/min, putting the prepared assistant A in proportion while stirring, increasing the speed to 2000r/min, fully stirring for 15min, reducing the speed to 800r/min, putting the pigment, the assistant B and the filler in proportion while stirring, stirring at a high speed for 2500r/min and 30min, transferring into a sand mill, controlling the fineness of the sand-milled paint to be less than or equal to 20 mu m, and adding a thickening agent to adjust the viscosity to be used as a component A;
step three, putting the curing agent into a dispersion kettle, stirring at the speed of 300r/min, adding a second part of hydrogenated bisphenol A epoxy resin while stirring, heating to 40-50 ℃, preserving heat for 1-2 h, adding a curing accelerator, stirring at 300r/min, dispersing for 10min, uniformly stirring, preserving heat for 30min, measuring the amine value, filtering and packaging after qualification to obtain a component B;
step four, uniformly mixing the component A and the component B according to the ratio of 6.5:1 before use; wherein the reactive diluent is dodecyl to tetradecyl glycidyl ether; the auxiliary agent A comprises the following components in percentage by weight: 30-50% of a dispersing agent, 10-30% of a defoaming agent and 10-30% of a leveling agent, wherein the dispersing agent is polyether polyamide, the defoaming agent is one or more of dimethylpolysiloxane containing fumed silica or organic modified polysiloxane, and the leveling agent belongs to an organic silicon modified surfactant, specifically polyether modified polydimethylsiloxane and alkyl modified polysiloxane; the auxiliary agent B is a mixture of an ultraviolet light absorber and a light stabilizer; the pigment is rutile titanium dioxide; the filler comprises the following components in percentage by weight: 15-25% of talcum powder, 5-15% of mica powder, 15-25% of antirust pigment and 40-60% of natural barium sulfate, wherein the antirust pigment is one or more of modified aluminum tripolyphosphate, calcium phosphate and zinc phosphate; the thickening agent is fumed silica; the curing agent comprises the following components in percentage by weight: IPDA 65-75%, curing accelerator 5-10%, and hydrogenated epoxy resin 5-15%; the curing accelerator is one or more of N-aminoethyl piperazine and m-xylylenediamine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544789.XA CN110358404B (en) | 2019-06-21 | 2019-06-21 | Solvent-free epoxy weather-resistant paint for outdoor weighing apparatus and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910544789.XA CN110358404B (en) | 2019-06-21 | 2019-06-21 | Solvent-free epoxy weather-resistant paint for outdoor weighing apparatus and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN110358404A CN110358404A (en) | 2019-10-22 |
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| CN111393946B (en) * | 2020-02-28 | 2022-03-15 | 南京长江涂料有限公司 | Solvent-free epoxy anticorrosive paint with high operation period and preparation method thereof |
| CN112210274A (en) * | 2020-09-18 | 2021-01-12 | 珠海展辰新材料股份有限公司 | Moisture-curable epoxy resin coating and preparation method thereof |
| CN113321976A (en) * | 2021-06-03 | 2021-08-31 | 泉州超能涂料有限公司 | Special paint with good weather resistance for advertisement sign and preparation method thereof |
| CN116179048B (en) * | 2022-12-30 | 2023-11-03 | 无锡华东锌盾科技有限公司 | Solvent-free weather-resistant epoxy finish paint and preparation method thereof |
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| CN102382551A (en) * | 2011-09-09 | 2012-03-21 | 海洋化工研究院 | Green environment-friendly epoxy type weather-resistant coating composition as well as preparation method and application thereof |
| CN102876198A (en) * | 2012-09-16 | 2013-01-16 | 广州秀珀化工股份有限公司 | Solvent-free high-elasticity epoxy self-leveling coating and preparation method thereof |
| CN105838192A (en) * | 2016-05-12 | 2016-08-10 | 武汉赫斯特涂层材料股份有限公司 | Epoxy polysiloxane paint and preparing method |
| CN106047065A (en) * | 2016-07-01 | 2016-10-26 | 洛阳双瑞防腐工程技术有限公司 | Solvent-free epoxy glass flake coating for sea splash zone steel structures and preparation method thereof |
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| CN102898624B (en) * | 2012-10-29 | 2014-11-05 | 上海维度化工科技有限公司 | Epoxy resin curing agent and preparation method thereof |
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| CN102382551A (en) * | 2011-09-09 | 2012-03-21 | 海洋化工研究院 | Green environment-friendly epoxy type weather-resistant coating composition as well as preparation method and application thereof |
| CN102876198A (en) * | 2012-09-16 | 2013-01-16 | 广州秀珀化工股份有限公司 | Solvent-free high-elasticity epoxy self-leveling coating and preparation method thereof |
| CN105838192A (en) * | 2016-05-12 | 2016-08-10 | 武汉赫斯特涂层材料股份有限公司 | Epoxy polysiloxane paint and preparing method |
| CN106047065A (en) * | 2016-07-01 | 2016-10-26 | 洛阳双瑞防腐工程技术有限公司 | Solvent-free epoxy glass flake coating for sea splash zone steel structures and preparation method thereof |
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