Low-odor LED-UV woodware white primer for home decoration and preparation method thereof

Abstract

According to the low-odor LED-UV woodware white primer for home decoration and the preparation method of the low-odor LED-UV woodware white primer, the low-odor LED-UV woodware white primer for home decoration comprises a main agent and a diluent, and the weight ratio of the main agent to the diluent is 10: 1; the construction mode is brush coating. The advantages of high solid content, no solvent and rapid curing of the LED-UV coating are applied to the home decoration market, the viscosity of the prepared product is suitable for a conventional brush coating construction mode of the home decoration market through scientific formula design, the surface effect is excellent, and meanwhile the LED-UV coating has the advantages of being good in storage stability (low in viscosity and free of hard sinking after long-time storage, and free of water resistance and the like. ), excellent adhesive force, good polishing property, low skin irritation, low odor, high solid content, no solvent, safety and environmental protection.

Description

Technical Field

[0001] The present invention belongs to the field of paints, and particularly relates to a low-odor LED-UV wood white primer for home decoration and a preparation method thereof. Background Art

[0002] UV-LED (ultraviolet light-emitting diode) is a new UV light source of semiconductor light emission. Compared with traditional UV light sources such as mercury arc lamps and microwave electrodeless lamps, it has many advantages such as long service life, high efficiency, good safety, low operating cost, no mercury, and no ozone generation. It has become a new generation of UV light source and has been widely used in fields such as UV adhesives, UV inks, UV coatings, and 3D printing, which has promoted energy conservation, consumption reduction, environmental protection, and pollution reduction in the photocuring technology and brought revolutionary changes to the photocuring industry.

[0003] The commonly used wavelengths of UV-LED coatings are currently 385nm, 395nm. The 365nm wavelength is not widely promoted at present because of its high price. Due to its own characteristics, there are still the following problems: Since its wavelength is concentrated in the long wavelength band and the wavelength is single, the energy is low, the surface curing is weak, and the oxygen inhibition polymerization is serious. Generally, it cannot be compared with traditional mercury lamp curing, and the initiator corresponding to the long wavelength is relatively high in price, resulting in a relatively high overall price. Despite some congenital problems, due to its advantages and the development of technology in recent years, it has been successfully applied in some fields, such as in the coating of some furniture paints.

[0004] The paints used in the home decoration market are currently mainly oil-based PU, water-based 1K, and 2K paints. The overall drying time is relatively long, and generally the number of coating times per day is 1-3 times. Although UV or UV-LED coatings are highly efficient and can be cured in seconds, due to the need for professional equipment, they are generally applied in factories, and no related products are seen in the current home decoration market.

[0005] Analysis of existing UV-LED white paint technology:

[0006] 1. The coating object is for factories, and no special requirements and descriptions are made for the environmental protection of the selected materials (low skin irritation, purity, odor, etc.);

[0007] 2. Since the construction method of white UV-LED paint is mostly mechanical roller coating or spraying, the viscosity is relatively high, which is not suitable for the brushing construction method in the home decoration market;

[0008] 3. For the construction method of manual brushing, compared with mechanical roller coating and spraying, it is easy to bring in air bubbles and brush marks, and the requirement for the additive system is higher than that of mechanical roller coating and spraying construction methods. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a low-odor LED-UV wood white primer for home decoration. Aiming at the retail home decoration market, by utilizing its solvent-free, high-solid content and rapid curing characteristics, rapid coating is realized, and the coating efficiency, safety and environmental protection during the coating process are improved; aiming at the brushing coating method commonly used in the home decoration market, on the premise of appropriate construction viscosity, the defoaming property and the leveling property are balanced, ensuring good coating performance and excellent surface effects; on the premise of preferably selecting monomers and main resins with low skin irritation, high purity and low odor in the formula, the scientific combination of different reaction activities minimizes the odor of the coating itself and after curing, has an appropriate balance between curing performance and adhesion, and excellent safety.

[0010] The present invention relates to a low-odor LED-UV wood white primer for home decoration, which is a white primer with a brushing construction method and can be regarded as a combination of "UV-LED white paint + brushing construction method".

[0011] To solve the above problems, the present invention is realized through the following technical solutions:

[0012] The first invention object of the present invention is:

[0013] To provide a low-odor LED-UV wood white primer for home decoration, which comprises the following components in parts by weight:

[0014] Main agent:

[0015] Trifunctional low-viscosity polyester: 25 - 35 parts, tetrafunctional amine-modified polyester: 5 - 15 parts, propoxylated neopentyl glycol diacrylate: 6 - 15 parts, dispersant: 0.1 - 0.5 part, defoamer: 0.1 - 0.3 part, leveling agent: 0.1 - 0.8 part, titanium dioxide: 4 - 6 parts, talcum powder: 8 - 12 parts, highly micronized washed kaolin: 5 - 15 parts, 2,4,6-trimethylbenzoyl phenylphosphonic acid ethyl ester: 3 - 6 parts, phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide: 0.5 - 1.5 parts, inhibitor: 0.05 part, active amine: 3 - 6 parts, acryloylmorpholine: 8 - 15 parts, anti-settling agent: 0.2 - 1 part; the total weight is 100 parts

[0016] Diluent:

[0017] Acryloylmorpholine: 100 parts;

[0018] The weight ratio of the main agent to the diluent is = 10:1;

[0019] The weight ratio of the main resin to the monomer is greater than 1:1;

[0020] Wherein the main resin is the total weight of trifunctional low-viscosity polyester and tetrafunctional amine-modified polyester; the monomer is the total weight of propoxylated neopentyl glycol diacrylate and acryloylmorpholine (including the diluent part);

[0021] The construction method is brushing, and the coating amount is controlled at 55±10 g / m 2 , and a handheld LED curing lamp is used for curing. The light irradiation is carried out three times, and the curing energy per time is 300-400 mJ / cm 2 .

[0022] The further optimization of the low-odor LED-UV wood white primer for home decoration of the present invention is as follows:

[0023] The three-functional low-viscosity polyester mentioned above is CR90475 of Huahui Chemistry; and / or

[0024] The four-functional amine-modified polyester mentioned above is DOUBLEMER 285 of Double Bond Chemistry; and / or

[0025] The neopentyl glycol diacrylate propoxylate is provided by Zeneca Resins (China) Co., Ltd.

[0026] The further optimization of the low-odor LED-UV wood white primer for home decoration of the present invention is as follows:

[0027] The highly micronized washed kaolin mentioned above is ASP G90 of BASF Chemistry.

[0028] The further optimization of the low-odor LED-UV wood white primer for home decoration of the present invention is as follows:

[0029] The ethyl 2,4,6-trimethylbenzoyl phenylphosphinate and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide mentioned above are provided by Hubei Gurun Chemistry.

[0030] The further optimization of the low-odor LED-UV wood white primer for home decoration of the present invention is as follows:

[0031] The dispersant mentioned above is BYK-2158 of BYK Chemistry; and / or

[0032] The defoamer mentioned above is BYK-1799 of BYK Chemistry; and / or

[0033] The leveling agent mentioned above is BYK-3535 of BYK Chemistry; and / or

[0034] The titanium dioxide mentioned above is R-900 of DuPont Chemistry; and / or

[0035] The talc powder mentioned above is provided by K Brand Powder, and the mesh number is 800-1000 meshes; and / or

[0036] The inhibitor mentioned above is 510 of Shanghai Tongjin Chemical Industry; and / or

[0037] The active amine mentioned above is B-27 of Boxing Chemistry; and / or

[0038] The morpholine acrylate is provided by Shanghai Jure Industrial Co., Ltd.; and / or

[0039] The anti-settling agent is RHEOBYK-410 of BYK Chemie.

[0040] The second object of the present invention is:

[0041] To provide a method for preparing the low-odor LED-UV wood white primer for home decoration described above, which comprises the following preparation steps:

[0042] Main agent part:

[0043] S1. First, put in the trifunctional low-viscosity polyester, tetrafunctional amine-modified polyester, partial neopentyl glycol diacrylate propoxylate, dispersant, defoamer, and disperse at high speed for 5 minutes;

[0044] S2. Then put in titanium dioxide, talc powder, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoyl phenylphosphinate, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, inhibitor, anti-settling agent, and disperse at high speed for 30 minutes;

[0045] S3. After the fineness is qualified, then put in the leveling agent, active amine, the remaining neopentyl glycol diacrylate propoxylate, morpholine acrylate, and stir evenly at medium and high speed;

[0046] S4. After passing the inspection, filter and package;

[0047] Diluent part:

[0048] Directly package.

[0049] For the low-odor UV-LED coating used in the home decoration market, the technical key points and problems involved are:

[0050] 1. The best balance among the coating reactivity, adhesion, flexibility, and odor under suitable construction viscosity conditions:

[0051] The commonly used coating method in the home decoration market is brushing. If the viscosity is too high, it cannot be constructed. To achieve the premise of low viscosity, the most direct and simple method is: select low-viscosity resins and reactive monomers, add as many reactive monomers as possible in the formula, and select pigment fillers with low oil absorption. However, from the current technology:

[0052] In the selection of resins and monomers, low-viscosity resins generally rely on improving their functionality to ensure the reactivity of the entire system in UV-LED systems due to their low molecular weight, but the negative impact is that adhesion and flexibility are relatively low in most cases; low-viscosity active monomers are mostly monofunctional or difunctional groups, with relatively good flexibility and adhesion, but relatively average reactivity. This disadvantage will be magnified in UV-LED systems. Although too much active monomer can directly reduce viscosity, too much monomer will first reduce its reactivity and secondly significantly reduce adhesion.

[0053] In the selection of pigments and fillers, titanium dioxide is a fixed item, and the focus is on the selection of fillers. Generally, conventional high oil absorption such as talcum powder has good anti-settling properties and good polishing properties, but excessive addition will lead to excessive viscosity, while low oil absorption heavy calcium and barium precipitation have poor anti-settling properties and poor polishing properties in this system.

[0054] Generally speaking, the key technical points are to balance the reaction activity with adhesion, flexibility and odor by utilizing the advantages and disadvantages of resin and monomer under the premise of setting the construction viscosity, and to select appropriate pigments and fillers to balance the viscosity, anti-settling and polishing properties.

[0055] 2. Excellent storage stability: Due to the transportation and storage process and other reasons, the time it takes for the paint used in the home improvement market to reach the hands of consumers is relatively long. The stability of the paint itself is significantly better than that of some factory-used paints. Attention should be paid to the paint's anti-settling property, viscosity growth, gelation and other indicators. As mentioned above, its low viscosity property itself is not conducive to anti-settling. Conventional solutions such as adding gas-phase silica, bentonite, etc. can solve the problem, but the amount added to achieve the effect will obviously increase the overall viscosity, and abnormalities such as viscosity growth and gelation need to be considered as a whole.

[0056] 3. Low odor, low irritation, safety, and environmental protection. The coating environment in the home improvement market is not like that in factories (with large-scale ventilation measures). There is a certain probability that the air circulation may not be satisfactory. In addition, the construction workers and owners may not have a professional understanding of coatings, and the protection may not be in place, which may lead to skin allergies and other such small-probability abnormal usage scenarios. The better the safety of the coating, the smaller the impact and adverse consequences. Some commonly used UV monomers such as DPGDA and HDDA have good diluents and fast reaction speeds, but they are highly irritating to the skin. Some low-irritation monomers have large molecular weights and poor dilution. The odor and skin irritation of the monomers must be given priority, and on this premise, the performance of the formula must be balanced.

[0057] 4. Better surface effect. Compared with spraying or mechanical roller coating, brushing is the construction method of paint in the home improvement market. It is easier to introduce bubbles and brush marks during the construction process, and the design requirements for the additive system are higher than those of spraying and mechanical roller coating.

[0058] The relatively close patent is CN201611044437 (LED-UV anti-graffiti and anti-fouling coating and its preparation method and usage). Its resin has 8 functional groups and 4 functional groups. The low-energy UV prepolymer is paired with the bifunctional monomer diethylene glycol dimethacrylate, and its combination emphasizes more on hardness and scratch resistance, which is not suitable for the idea of being used as a primer. Moreover, this patent is a varnish without the addition of pigments and fillers, so there is no need to consider the problem of anti-settling. The overall design system of additives is also very simple.

[0059] The main design idea of the present invention is as follows:

[0060] 1. Film-forming substances (selection of the combination of main resin and monomer)

[0061] The main resin is selected as a resin with high functionality and low viscosity, which provides overall reaction activity. However, when used alone, the paint film is hard, brittle and prone to cracking;

[0062] Since monomers are low-molecular-weight substances and have a great impact on the odor of the coating itself, and this product is mainly developed for the retail home decoration market, high purity, low odor and low skin irritation of the monomers are the prerequisites for selection. On this basis, since the main resin has provided sufficient reaction activity, the present invention selects mono-functional and bi-functional monomers with good flexibility and adhesion but slightly lower reaction activity to cooperate with the main resin to balance the performance of the whole system;

[0063] The specific selection idea is as follows:

[0064] The degree of skin irritation and its correlation with the general skin irritation index PII are shown in the following table:

[0065]

[0066] The PII and viscosity of general relevant published literature and commonly used UV monomers in the market are shown in the following table:

[0067]

[0068] In the existing published literature and the market, because the targeted objects are furniture factories, the skin irritation index of UV monomers is generally rarely noticed. The main concerns are viscosity and reaction activity. Most of the coating methods are mechanical coating (the construction viscosity can be reduced by heating), so reducing viscosity, reaction activity and the combination with resin are relatively flexible. However, in the home decoration market, due to the consideration of safety - skin irritation index, there are not many selectable monomers. On this basis, considering reducing viscosity, reaction activity and the requirements for the combination with resin are relatively high. Examples of conventional technical routes are as follows:

[0069] (1) Increasing the amount of the monomer can reduce the viscosity. On this premise, the reactivity can be adjusted, but it will significantly sacrifice the adhesion and fail to meet the requirements. Therefore, in the present invention, the weight ratio of the main resin to the monomer must be greater than 1:1.

[0070] (2) Using high-functional and high-reactivity monomers. As can be seen from the above table, high-functional and high-reactivity monomers generally have relatively high viscosities and weak viscosity-reducing properties. Regardless of whether they are combined with high-, medium-, or low-reactivity resins, they cannot meet the construction requirements under certain conditions.

[0071] (3) Medium- and low-reactivity monomers. If the resin has weak reactivity, the overall reactivity cannot meet the requirements. Resins with ultra-high functional groups generally have relatively increased viscosities, but at the same time, they bring the risk of cracking and need to be combined with resins with appropriate reactivity.

[0072] Since the present invention targets the home improvement market, under some restrictions (such as the balance of viscosity and reactivity), through a large number of experimental designs and screenings, a main resin with 3 to 4 high functional groups, high reactivity, and moderate viscosity is used, and is combined with a low-viscosity monomer with medium reactivity, and the overall can achieve a good balance and meet the requirements.

[0073] 2. In terms of overall storage stability

[0074] The main construction method of coatings in the home improvement market is brushing at normal temperature. Different from mechanical coating, its viscosity is relatively low, which will bring some problems of storage stability such as precipitation. In view of this, in the formulation design:

[0075] ① Adopting a two-component design can increase the viscosity of the main agent to a certain extent, thus improving the anti-settling property, but this alone is not enough;

[0076] ② In the selection of fillers, highly micronized washed kaolin is innovatively introduced as a filler (with moderate oil absorption, good anti-settling property, and good sanding property). There is no relevant patent mention. Even in conventional UV coating patents, very few patents mention the use of conventional kaolin, but it is not the type of kaolin selected in this patent;

[0077] Conventional fillers are generally talc powder, heavy calcium carbonate, precipitated barium sulfate. Compared with ASP G90 in the preferred formulation of this technical solution:

[0078] System viscosity increase: heavy calcium carbonate ≈ precipitated barium sulfate < ASPG90 < talc powder;

[0079] Anti-settling property: ASPG90 ≈ talc powder > heavy calcium carbonate ≈ precipitated barium sulfate;

[0080] Sanding property: talc powder > ASPG90 > heavy calcium carbonate ≈ precipitated barium sulfate;

[0081] Hiding power: ASPG90 > talc powder ≈ heavy calcium carbonate ≈ precipitated barium sulfate;

[0082] Comprehensive performance: Introducing ASP G90 will not cause a significant increase in viscosity like talcum powder. It has good anti-settling and sanding properties, while providing a certain hiding power, reducing the usage amount of titanium dioxide.

[0083] ③ Since highly micronized washed kaolin is introduced, only modified urea needs to be added to the anti-settling system, without the need to use the conventional anti-settling combination (aerosil + modified urea). This reduces the problems that the introduction of aerosil will increase viscosity and reduce leveling property. Through a series of coordinated combination designs (under the condition of determining the overall resin monomer system, from "two-component design" to "introduction of new fillers" to "anti-settling agent" combination), the problem of easy precipitation during storage at low viscosity is successfully solved.

[0084] 3. Photoinitiator:

[0085] Due to considering the safety of the home improvement market, a combination of ethyl 2,4,6-trimethylbenzoyl phenylphosphinate and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide is adopted.

[0086] 4. Other additive systems:

[0087] Considering the brushing construction method (compared with mechanical roller coating and spraying, it is easier to introduce air bubbles and the leveling property is relatively poor), and the present invention is a colored paint system (compared with varnish, the introduction of fillers further reduces the leveling and defoaming properties). Through a large number of experiments, the actual optimal combination is screened out.

[0088] The low-odor LED-UV wood white primer for home improvement prepared by the present invention applies the advantages of high solid content and solvent-free, and rapid curing of LED-UV wood coatings to the home improvement market. Through scientific formula design, the viscosity of the prepared product is suitable for brushing / rolling construction methods, with excellent surface effects. At the same time, it has good storage stability (no hard sedimentation, no gel and other abnormalities during long-term storage at low viscosity), excellent adhesion, good sanding property, low skin irritation, low odor, high solid content and solvent-free, safe and environmentally friendly and other characteristics. Currently, there is no publicly disclosed patent in this regard. Specific embodiments

[0089] In order to make the application, technical solutions and advantages of the present invention clearer and more understandable, the content of the present invention will be described in detail in combination with specific embodiments. It should be understood that the embodiments are only used to illustrate the present invention, rather than limiting the protection scope of the present invention. Any simple improvement to the preparation method of the present invention under the premise of the present invention's concept belongs to the protection scope of the present invention.

[0090] In the following examples, the three-functional low-viscosity polyester is CR90475 from Haohui Chemistry, the four-functional amine-modified polyester is DOUBLEMER 285 from Double Bond Chemistry, the propoxylated neopentyl glycol diacrylate is provided by Avecia Resins (China) Co., Ltd., the dispersant is BYK-2158 from BYK Chemistry, the defoamer is BYK-1799 from BYK Chemistry, the leveling agent is BYK-3535 from BYK Chemistry, the titanium dioxide is R-900 from DuPont Chemistry, the talc powder is provided by K Brand Powder, with a mesh number of 800 - 1000 mesh, the highly micronized water-washed kaolin is ASPG90 from BASF Chemistry, the ethyl 2,4,6-trimethylbenzoyl phenylphosphinate and bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide are provided by Hubei Gurun Chemistry, the inhibitor is 510 from Shanghai Tongjin Chemical Industry, the active amine is B-27 from Boxing Chemistry, the acryloylmorpholine is provided by Shanghai Jure Industrial Co., Ltd., and the anti-settling agent is RHEOBYK-410 from BYK Chemistry.

[0091] Examples 1# - 4#

[0092] Main agent:

[0093] 25 - 35 parts of three-functional low-viscosity polyester, 5 - 15 parts of four-functional amine-modified polyester, 6 - 15 parts of propoxylated neopentyl glycol diacrylate, 0.1 - 0.5 parts of dispersant, 0.1 - 0.3 parts of defoamer, 0.1 - 0.8 parts of leveling agent, 4 - 6 parts of titanium dioxide, 8 - 12 parts of talc powder, 5 - 15 parts of highly micronized water-washed kaolin, 3 - 6 parts of ethyl 2,4,6-trimethylbenzoyl phenylphosphinate, 0.5 - 1.5 parts of bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, 0.05 parts of inhibitor, 3 - 6 parts of active amine, 8 - 15 parts of acryloylmorpholine, 0.2 - 1 part of anti-settling agent; total weight parts is 100 parts

[0094] Diluent:

[0095] 100 parts of acryloylmorpholine;

[0096] The weight ratio of the main agent to the diluent is = 10:1;

[0097] The weight ratio of the main resin to the monomer is greater than 1:1;

[0098] Wherein the main resin is the total weight of the three-functional low-viscosity polyester and the four-functional amine-modified polyester; the monomer is the total weight of the propoxylated neopentyl glycol diacrylate and acryloylmorpholine (including the diluent part);

[0099] The construction method is brushing, and the coating amount is controlled at 55 ± 10 g / m 2 , and a handheld LED curing lamp is used for curing, with a total of three light irradiations, and the curing energy per pass is 300 - 400 mJ / cm 2 .

[0100] It includes the following preparation steps:

[0101] Main agent part:

[0102] S1. First, put in triglycol low-viscosity polyester, tetrafunctional amine-modified polyester, partial propoxylated neopentyl glycol diacrylate, dispersant, defoamer, and disperse at high speed for 5 minutes;

[0103] S2. Then put in titanium dioxide, talc powder, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoyl phenylphosphinate, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, inhibitor, anti-settling agent, and disperse at high speed for 30 minutes;

[0104] S3. After the fineness is qualified, then put in leveling agent, active amine, the remaining propoxylated neopentyl glycol diacrylate, acryloylmorpholine, and stir evenly at medium and high speed;

[0105] S4. After passing the inspection, filter and package.

[0106] Diluent part:

[0107] Direct packaging.

[0108] Table 1 Raw material composition table of each example and comparative example (parts by weight)

[0109]

[0110] Table 2 Performance test table of each example and comparative example

[0111]

[0112]

[0113]

[0114] It can be seen from Tables 1-2 that the main difference among Examples 1#-4# lies in the different pigment and filler contents, which leads to differences in cost and application scenarios. From the performance parameters of the examples, they all meet the expected requirements - good storage stability, no cracking of the cured paint film during cold and hot cycling, high safety. Adhesion and sanding properties meet the actual needs.

[0115] The main differences between Comparative Example 1, Comparative Example 2 and the examples lie in the different components, as shown in Table 1 for details.

[0116] Comparative Example 1:

[0117] For the product prepared in Comparative Example 1, its performance emphasizes hardness and scratch resistance more, while conventional primers focus on adhesion and sandability, and their performance starting points are different. It can be seen from the results that when using a resin with ultra-high functional groups in combination with a difunctional monomer, the viscosity increases, the sandability decreases, and the adhesion will deteriorate significantly, with an obvious risk of cracking.

[0118] Comparative Example 2:

[0119] Conventional ordinary kaolin is generally mainly used in waterborne coatings, especially waterborne architectural coatings, and is rarely used in oil-based coatings. In the currently disclosed UV-LED technologies, there is no use of such powders as highly micronized washed kaolin, and only conventional kaolin is used. However, it generally has a high viscosity and low requirements for anti-settling. If conventional kaolin is used to equivalently replace highly micronized washed kaolin in the present invention, it can be seen that in terms of performance, the anti-settling property and sandability decrease significantly, failing to meet the predetermined performance requirements.

[0120] The role of ASP G90 - highly micronized washed kaolin in this technical solution is mainly reflected in:

[0121] 1. Strong hiding power, with better hiding power compared to fillers such as calcium powder;

[0122] 2. Good suspension performance, without the need to add additional filler suspension stabilizers;

[0123] 3. High whiteness, which can reduce the addition amount of titanium dioxide and lower the cost;

[0124] 4. Less sieve residue, high purity, and stable formulation;

[0125] 5. Little influence on gloss, and can be used in high-gloss coatings;

[0126] 6. Good suspension stability. Compared with ordinary kaolin, ASP G90 - highly micronized washed kaolin has been modified in terms of anti-settling property and dispersibility, and the sandability has been improved.

[0127] Although the materials selected in the present invention still belong to the coating system, through the innovative introduction of some materials and scientific and reasonable formulation design, and through their synergistic effects, a low-odor LED-UV wood white primer for home decoration has been prepared. The viscosity of the prepared product is suitable for brush coating construction, and the surface effect is excellent. The low-odor LED-UV wood white primer for home decoration of the present invention has good storage stability (no hard sedimentation, no gel and other abnormalities during long-term storage at low viscosity), excellent adhesion, good sandability, low skin irritation, low odor, high solid content and solvent-free, and is safe and environmentally friendly. Currently, there are no publicly disclosed patents in this direction.

[0128] In summary, the above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention; any equivalent changes, modifications, and evolutions made by those skilled in the art within the scope of the technical solution of the present invention using the disclosed technical content are regarded as equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

[0129] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0130] The experimental methods in the present invention that do not specify specific conditions are usually carried out under conventional conditions or according to the conditions recommended by the manufacturer.

[0131] For the various optimization technical solutions in the present invention, unless otherwise stated, the various optimization technical solutions can be combined with each other.

[0132] Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0133] The experimental methods in the specification and embodiments that do not specify specific conditions are usually carried out under conventional conditions or according to the conditions recommended by the manufacturer.

[0134] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present invention.

Claims

1. A low-odor LED-UV wood white primer for home decoration, characterized by: It includes the following components by weight: Main agent: 25-35 parts of trifunctional low-viscosity polyester, 5-15 parts of tetrafunctional amine-modified polyester, 6-15 parts of propoxylated neopentyl glycol diacrylate, 0.1-0.5 parts of dispersant, 0.1-0.3 parts of defoamer, 0.1-0.8 parts of leveling agent, 4-6 parts of titanium dioxide, 8-12 parts of talc, 5-15 parts of highly micronized washed kaolin, 3-6 parts of ethyl 2,4,6-trimethylbenzoylphenylphosphonate, 0.5-1.5 parts of phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide, 0.05 parts of inhibitor, 3-6 parts of active amine, 8-15 parts of acryloylmorpholine, 0.2-1 parts of anti-settling agent; total weight parts are 100 parts Thinner: Acryloylmorpholine 100 parts; The weight ratio of the main agent to the diluent is 10:1; The weight ratio of the main resin to the monomer is greater than 1:1; wherein the main resin is the total weight of the trifunctional low-viscosity polyester and the tetrafunctional amine-modified polyester; and the monomer is the total weight of propoxylated neopentyl glycol diacrylate and acryloyl morpholine; The construction method is brush coating, and the coating amount is controlled at 55±10g / m 2 , use a handheld LED curing lamp for curing, three times of illumination, each curing energy is 300 ~ 400mJ / cm 2 .

2. The low-odor LED-UV wood white primer for home decoration according to claim 1, characterized in that: The trifunctional low-viscosity polyester is CR90475 produced by Haohui Chemical; and / or The tetrafunctional amine-modified polyester is DOUBLEMER 285 with double bond chemistry; and / or The propoxylated neopentyl glycol diacrylate was provided by Allnex Resins (China) Co., Ltd.

3. The low-odor LED-UV wood white primer for home decoration according to claim 1, characterized in that: The highly micronized washed kaolin is ASP G90 produced by BASF Chemicals.

4. The low-odor LED-UV wood white primer for home decoration according to claim 1, characterized in that: The 2,4,6-trimethylbenzoylphenylphosphonic acid ethyl ester and phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide are provided by Hubei Gurun Chemical.

5. The low-odor LED-UV wood white primer for home decoration according to claim 1, characterized in that: The dispersant is BYK-2158 from BYK Chemicals; and / or The defoamer is BYK-1799 from BYK Chemicals; and / or The leveling agent is BYK-3535 of BYK Chemicals; and / or The titanium dioxide is R-900 of DuPont Chemical; and / or The talcum powder is provided by K brand powder, with a mesh size of 800-1000 mesh; and / or The inhibitor is 510 from Shanghai Tongjin Chemical; and / or The active amine is B-27 of Boxing Chemical; and / or The acryloylmorpholine is provided by Shanghai Jurui Industrial Co., Ltd.; and / or The anti-settling agent is RHEOBYK-410 from BYK Chemicals.

6. A method for preparing the low-odor LED-UV wood white primer for home decoration according to claim 1, characterized in that: It comprises the following preparation steps: Main agent part: S1. First, add trifunctional low-viscosity polyester, tetrafunctional amine-modified polyester, partially propoxylated neopentyl glycol diacrylate, dispersant, and defoamer, and disperse at high speed for 5 minutes; S2. Then add titanium dioxide, talc, highly micronized washed kaolin, ethyl 2,4,6-trimethylbenzoylphenylphosphonate, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, inhibitor, anti-settling agent, and disperse at high speed for 30 minutes; S3. After the fineness is qualified, then add the leveling agent, active amine, remaining propoxylated neopentyl glycol diacrylate, acryloyl morpholine, and stir evenly at medium and high speed; S4. After passing the test, filter and package; Diluent part: Direct packaging.

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