A kind of foamed polyurethane relief decorative plate is sprayed with quasi-molecular uv skin-feel paint

Abstract

The application provides a kind of foamed polyurethane relief decorative plate for spraying excimer UV skin feel paint, belongs to the field of coating technology, the excimer UV skin feel paint includes the following mass percentage components: polypropylene carbonate acrylic resin: 30-70%, modified epoxy acrylate resin: 8-20%, unsaturated cellulose resin solution: 20-40%, photoinitiator A: 1-5%, photoinitiator B: 0.2-1%, anti-fouling aid: 0.5-3%, defoaming agent: 0.1-0.3%, leveling agent: 0.1-1%, light stabilizer: 0.5-2%, ethyl acetate: 5-15%; The viscosity range of the excimer UV skin feel paint is: 600±100 mPa.s / 25 DEG C; The mercury lamp curing energy requirement of the excimer UV skin feel paint when applied is greater than 800 millijoule per square centimeter. The application provides a kind of foamed polyurethane relief decorative plate for spraying excimer UV skin feel paint, to achieve the purpose of sealing the smell of foamed polyurethane relief decorative plate after spraying film.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. Background Technology

[0002] Polyurethane foam relief is a new type of three-dimensional modeling material made from polyurethane resin, foaming agents, and other raw materials. After being softened by heat, it is then carved or shaped into various forms. Unlike traditional sculptures, it features high plasticity, elasticity, precision, and vibrant colors. Combining the creativity, aesthetics, and decorative qualities of relief with advancements in engineered wood panel bonding technology, polyurethane foam relief has begun to be used as a home decoration panel. However, due to its material properties, polyurethane foam relief decorative panels have a strong odor. To address this odor issue, paint is typically used to seal and isolate the odor. However, traditional polyurethane paints cannot achieve an odor-free film, and water-based paints have low cross-linking density and weak sealing effects, failing to completely seal the odor inherent in the polyurethane foam relief itself. This severely hinders the application of polyurethane foam relief decorative panels in interior decoration.

[0003] Therefore, there is a need to provide a spray excimer UV skin-feel paint for foamed polyurethane embossed decorative panels to solve the problem that the odor of polyurethane paint film cannot be completely sealed. Summary of the Invention

[0004] In view of this, the present invention provides a spray excimer UV skin-feel paint for foamed polyurethane embossed decorative panels, which achieves the purpose of sealing the odor of the foamed polyurethane embossed decorative panels after spraying and film formation.

[0005] To achieve the above objectives, this invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following raw materials: polycarbonate acrylic resin, modified epoxy acrylate resin, unsaturated cellulose resin solution, photoinitiator, antifoaming agent, defoamer, leveling agent, light stabilizer, and ethyl acetate. The viscosity range of the excimer UV skin-feel paint is 600±100 mPa.s / 25℃. When applying the excimer UV skin-feel paint, the mercury lamp curing energy must be greater than 800 millijoules per square centimeter.

[0006] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. On one hand, it uses a mixture of polycarbonate acrylic resin, modified epoxy acrylic resin, and unsaturated cellulose resin, which work synergistically to provide appropriate crosslinking density, extremely high toughness, excellent scratch resistance, and an odorless and yellowing-resistant paint film. The polymerization and crosslinking reaction of the resin under nitrogen protection at a 172 nm light source avoids oxygen inhibition and provides the highest and most efficient conversion rate, resulting in the highest surface hardness, the highest coating crosslinking density, and an odorless paint film, ultimately achieving a strong sealing and isolating effect. On the other hand, this invention does not use matte powder, avoiding the side effect of incomplete wetting and dispersion of matte powder leading to poor film sealing, thus improving the sealing effect while still maintaining a matte finish. This is because the acrylate double bonds in the excimer UV skin-feel paint formulation can generate free radicals after absorbing 172 nm ultraviolet light, requiring only a small amount of photoinitiator. The fewer initiators used, the better the yellowing resistance of the paint film under the same paint resin system. Simultaneously, fewer small molecules are produced by the decomposition of the initiator, resulting in a lower odor in the paint film. Furthermore, the penetration depth of 172nm ultraviolet light is only 100 to 500 nanometers, so only a very thin surface layer is cured. This thin layer undergoes polymerization and cross-linking, resulting in a non-smooth surface that floats on the uncured underlying liquid, achieving a matte finish. The paint film also possesses high definition and high transparency, realistically and comprehensively showcasing the unique texture of the relief.

[0007] Optionally, the excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 30-70%, modified epoxy acrylate resin: 8-20%, unsaturated cellulose resin solution: 20-40%, photoinitiator A: 1-5%, photoinitiator B: 0.2-1%, antifoaming agent: 0.5-3%, defoamer: 0.1-0.3%, leveling agent: 0.1-1%, light stabilizer: 0.5-2%, and ethyl acetate: 5-15%.

[0008] Optionally, the excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 40-60%, modified epoxy acrylate resin: 10-18%, unsaturated cellulose resin solution: 25-35%, photoinitiator A: 2-4%, photoinitiator B: 0.5-0.8%, antifoaming agent: 1-2.5%, defoamer: 0.1-0.3%, leveling agent: 0.4-0.8%, light stabilizer: 0.8-1.8%, and ethyl acetate: 8-12%.

[0009] Optionally, the excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 50%, modified epoxy acrylate resin: 10%, unsaturated cellulose resin solution: 26%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0010] Optionally, the excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 30%, modified epoxy acrylate resin: 16%, unsaturated cellulose resin solution: 40%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0011] Optionally, the excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 60%, modified epoxy acrylate resin: 8%, unsaturated cellulose resin solution: 18%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0012] Optionally, the polycarbonate acrylic resin is ZC6538 resin from Jiangmen Zicai Chemical Co., Ltd.

[0013] Optionally, the unsaturated cellulose resin is JS-116 resin from Zhongshan Jieshida Fine Chemical Co., Ltd.

[0014] Optionally, the antifouling additive is Silok-8586 from Silok Corporation.

[0015] Optionally, photoinitiator A is photoinitiator MBF, and photoinitiator B is photoinitiator TPO.

[0016] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. It uses a high-toughness, non-yellowing, polycarbonate acrylic resin and a very small amount of a yellowing-resistant initiator, combined with a light stabilizer, to give the paint film extremely strong resistance to yellowing and scratches. The addition of anti-fouling additives further enhances the paint film's stain resistance.

[0017] This invention also utilizes unsaturated cellulose resin, a cellulose-modified acrylic resin that can participate in UV curing reactions. The cellulose structure within the resin imparts excellent anti-sagging and leveling properties to the paint during spraying, which is the most crucial factor affecting the vertical surface spraying effect of the paint in this invention. Its dosage directly impacts the paint's anti-sagging properties. Since this paint does not use matte powders or other powders, the unsaturated cellulose resin helps achieve good anti-sagging and leveling properties. This resin also accelerates the complete evaporation of solvents in the paint. More importantly, because it is a solid resin, it plays a vital role in the paint's penetration, wetting, and spreading, without affecting the film's resistance to yellowing.

[0018] The modified epoxy acrylic resin used in this invention contains a large number of hydroxyl groups, which can significantly improve adhesion to the substrate and simultaneously enhance the flexibility of the paint film without affecting its yellowing resistance. Photoinitiator A is MBF, primarily responsible for curing the paint film and exhibiting good yellowing resistance. Photoinitiator B is TPO, mainly responsible for deep curing, which helps ensure paint film adhesion and also provides a photobleaching effect. The anti-fouling additive is a reactive anti-graffiti additive that provides durable stain resistance and a smooth feel. The light stabilizer is a crucial material for the yellowing resistance of the coating in this invention. This UV absorber has a strong UV absorption function. It can protect against high-energy UV radiation by converting it into low-energy radiation, significantly improving the yellowing resistance of the paint film and protecting the embossed substrate from easy UV damage.

[0019] The above-described technical solution of the present invention has at least the following beneficial effects:

[0020] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. Through a unique formula design, the prepared excimer UV skin-feel paint exhibits extremely high film density, effectively sealing the odor of the foamed polyurethane embossed material. The paint film itself is odorless and possesses high hardness, scratch resistance, and stain resistance. Furthermore, this invention does not use matte powder, avoiding the side effect of incomplete wetting and dispersion of matte powder leading to poor film sealing. This improves the sealing effect of the paint film while still maintaining a matte finish, offering high definition and high transparency, thereby maximizing the display of the embossed texture. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0022] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following raw materials: polycarbonate acrylic resin, modified epoxy acrylate resin, unsaturated cellulose resin solution, photoinitiator, antifoaming agent, defoamer, leveling agent, light stabilizer, and ethyl acetate. The viscosity range of the excimer UV skin-feel paint is 600±100 mPa.s / 25℃. The curing energy of the mercury lamp during curing of the excimer UV skin-feel paint is required to be greater than 800 millijoules per square centimeter.

[0023] The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 30-70%, modified epoxy acrylate resin: 8-20%, unsaturated cellulose resin solution: 20-40%, photoinitiator A: 1-5%, photoinitiator B: 0.2-1%, antifoaming agent: 0.5-3%, defoamer: 0.1-0.3%, leveling agent: 0.1-1%, light stabilizer: 0.5-2%, and ethyl acetate: 5-15%.

[0024] In this invention, the polycarbonate acrylic resin is ZC6538 resin from Jiangmen Zicai Chemical Co., Ltd.

[0025] The modified epoxy acrylate resin used in this invention is ZC8801A resin from Kaiping Zicai Chemical Co., Ltd.

[0026] The unsaturated cellulose resin used in this invention is JS-116 resin from Zhongshan Jieshida Fine Chemical Co., Ltd.

[0027] In this invention, photoinitiator A is photoinitiator MBF, and photoinitiator B is photoinitiator TPO.

[0028] The antifouling additive in this invention is Silok-8586 from Sloco.

[0029] The defoamer used in this invention is TEGO Airex 920.

[0030] The leveling agent used in this invention is Dow Corning DC-57.

[0031] The light stabilizer used in this invention is Tinuvin® 400, an ultraviolet absorber from BASF (China) Co., Ltd.

[0032] This invention does not impose any special restrictions on the type of photoinitiator A, photoinitiator B, or ethyl acetate.

[0033] Example 1

[0034] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 50%, modified epoxy acrylate resin: 10%, unsaturated cellulose resin solution: 26%, photoinitiator A: 2%, photoinitiator B: 0.3%, anti-foaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0035] This invention, through a unique formulation design, combines polycarbonate acrylic resin, modified epoxy acrylic resin, and unsaturated cellulose resin with various additives to work synergistically. Using an excimer UV curing process, it can produce a paint that is odorless, has high hardness, scratch resistance, stain resistance, and strong film density. It also seals the odor of the foamed polyurethane relief material. The paint does not use matte powder but still has a matte effect.

[0036] During the wetting and dispersion process, matte powder cannot be completely and thoroughly wetted and dispersed at the microscopic level. Air adsorbed on the surface of the matte powder cannot be completely replaced and wetted by the paint liquid, resulting in voids on the matte powder surface. Furthermore, matte powder also accumulates in the paint liquid and on the paint film surface, further creating voids. These two reasons lead to a weaker sealing effect in paint films containing matte powder compared to those without. This paint, however, does not use matte powder, thus overcoming these side effects.

[0037] Example 2

[0038] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 30%, modified epoxy acrylate resin: 16%, unsaturated cellulose resin solution: 40%, photoinitiator A: 2%, photoinitiator B: 0.3%, anti-foaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0039] Example 3

[0040] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 60%, modified epoxy acrylate resin: 8%, unsaturated cellulose resin solution: 18%, photoinitiator A: 2%, photoinitiator B: 0.3%, anti-foaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0041] Example 4

[0042] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 40%, modified epoxy acrylate resin: 20%, unsaturated cellulose resin solution: 26%, photoinitiator A: 2%, photoinitiator B: 0.3%, anti-foaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

[0043] Example 5

[0044] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 35%, modified epoxy acrylate resin: 10%, unsaturated cellulose resin solution: 25%, photoinitiator A: 5%, photoinitiator B: 3%, antifoaming agent: 3%, defoamer: 1%, leveling agent: 1%, light stabilizer: 2%, and ethyl acetate: 15%.

[0045] Example 6

[0046] This invention provides a sprayable excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The excimer UV skin-feel paint comprises the following components by weight percentage: polycarbonate acrylic resin: 35%, modified epoxy acrylate resin: 20%, unsaturated cellulose resin solution: 30%, photoinitiator A: 1%, photoinitiator B: 0.2%, antifoaming agent: 0.5%, defoamer: 0.1%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 12.5%.

[0047] Comparative Example 1

[0048] The only difference from Example 1 is that the 611B-85 resin of Changxing Chemical Materials (Zhuhai) Co., Ltd. is used instead of the ZC6538 resin of Jiangmen Zicai Chemical Co., Ltd.

[0049] Comparative Example 2

[0050] The only difference from Example 1 is that CBA-171-15 cellulose acetate butyrate resin manufactured by Eastman Chemical Company of the United States was used instead of JS-116 resin manufactured by Zhongshan Jieshida Fine Chemical Co., Ltd.

[0051] Comparative Example 3

[0052] The difference from Example 1 is that ZC8801A resin from Kaiping Zicai Chemical Co., Ltd. is not used. The composition is as follows: polycarbonate acrylic resin: 55%, unsaturated cellulose resin solution: 31%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, ethyl acetate: 8.8%.

[0053] The paints prepared in Examples 1-6 and Comparative Examples 1-3 were subjected to performance tests. The specific test methods are shown in Table 1, and the results are shown in Table 2.

[0054] Table 1

[0055]

[0056] Table 2

[0057]

[0058] Table 2 shows the pencil hardness (scratch) grades from softest to hardest as follows: 9B-8B-7B-6B-5B-4B-3B-2B-B-HB-FH-2H-3H-4H-5H-6H-7H-8H-9H.

[0059] According to the excellent performance of Examples 1-6 in Table 2 in terms of odor, yellowing resistance, storage stability, pencil hardness, stain resistance and touch feel, the present invention provides a spray excimer UV skin-feel paint for foamed polyurethane embossed decorative panels. The paint film itself is odorless and can also seal the odor of the foamed polyurethane embossed material. It has high hardness, scratch resistance and stain resistance.

[0060] Based on the data in Table 2, and in comparison with Comparative Example 1 and Example 1, the only difference is that 611B-85 resin from Changxing Chemical Materials (Zhuhai) Co., Ltd. was used instead of ZC6538 resin from Jiangmen Zicai Chemical Co., Ltd. However, Comparative Example 1 had an odor, poorer resistance to yellowing than Example 1, and lower hardness and tea stain resistance than Example 1. Furthermore, it did not have a smooth feel when in contact with the skin. It can be seen that ZC6538 resin has a promoting effect on different indicators in this invention.

[0061] Based on the data in Table 2, and comparing Comparative Example 2 with Example 1, the only difference is the use of CBA-171-15 cellulose acetate butyrate resin manufactured by Eastman Chemical Company of the United States instead of JS-116 resin from Zhongshan Jieshida Fine Chemical Co., Ltd. However, Comparative Example 2 exhibits an odor, worse yellowing resistance than Example 1, lower hardness and vinegar stain resistance, and a less smooth feel. This indicates that JS-116 resin also promotes various performance indicators in this invention.

[0062] Based on the data in Table 2, and comparing Comparative Example 3 with Example 1, the only difference is that ZC8801A resin from Kaiping Zicai Chemical Co., Ltd. was not used, and the mass fraction of ZC8801A resin was evenly distributed between polycarbonate acrylic resin and unsaturated cellulose resin. However, Comparative Example 3 had an odor, its yellowing resistance was worse than Example 1, its hardness and acetic acid stain resistance were lower than Example 1, and its touch was not smooth. It can be seen that ZC8801A resin has a promoting effect on various indicators in this invention.

[0063] In summary, the three main components of this invention are all unique and indispensable. Only when the three are in a unique ratio can they work synergistically to give the resulting excimer UV skin-feel paint extremely high film density, which can seal the odor of the foamed polyurethane relief material. The paint film itself is odorless and has high hardness, scratch resistance and stain resistance.

[0064] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A spray-applied excimer UV skin-feel paint for foamed polyurethane embossed decorative panels, characterized in that, The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 30-70%, modified epoxy acrylate resin: 8-20%, unsaturated cellulose resin solution: 20-40%, photoinitiator A: 1-5%, photoinitiator B: 0.2-1%, antifoaming agent: 0.5-3%, defoamer: 0.1-0.3%, leveling agent: 0.1-1%, light stabilizer: 0.5-2%, ethyl acetate: 5-15%; the viscosity range of the excimer UV skin-feel coating is 600±100 mPa.s / 25℃; the mercury lamp curing energy requirement for curing the excimer UV skin-feel coating is greater than 800 millijoules per square centimeter; the excimer UV skin-feel coating absorbs 172 nm ultraviolet light to cure and form a film; The polycarbonate acrylic resin is ZC6538 resin from Jiangmen Zicai Chemical Co., Ltd. The unsaturated cellulose resin is JS-116 resin from Zhongshan Jieshida Fine Chemical Co., Ltd. The photoinitiator A is photoinitiator MBF, and the photoinitiator B is photoinitiator TPO.

2. The spray-applied excimer UV skin-feel paint for foamed polyurethane embossed decorative panels according to claim 1, characterized in that, The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 40-60%, modified epoxy acrylate resin: 10-18%, unsaturated cellulose resin solution: 25-35%, photoinitiator A: 2-4%, photoinitiator B: 0.5-0.8%, antifoaming agent: 1-2.5%, defoamer: 0.1-0.3%, leveling agent: 0.4-0.8%, light stabilizer: 0.8-1.8%, and ethyl acetate: 8-12%.

3. The spray-applied excimer UV skin-feel paint for foamed polyurethane embossed decorative panels according to claim 1, characterized in that, The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 50%, modified epoxy acrylate resin: 10%, unsaturated cellulose resin solution: 26%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

4. The spray-applied excimer UV skin-feel paint for foamed polyurethane embossed decorative panels according to claim 1, characterized in that, The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 30%, modified epoxy acrylate resin: 16%, unsaturated cellulose resin solution: 40%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

5. The spray-applied excimer UV skin-feel paint for foamed polyurethane embossed decorative panels according to claim 1, characterized in that, The excimer UV skin-feel coating comprises the following components by weight percentage: polycarbonate acrylic resin: 60%, modified epoxy acrylate resin: 8%, unsaturated cellulose resin solution: 18%, photoinitiator A: 2%, photoinitiator B: 0.3%, antifoaming agent: 2%, defoamer: 0.2%, leveling agent: 0.2%, light stabilizer: 0.5%, and ethyl acetate: 8.8%.

6. The sprayed excimer UV skin-feel paint for foamed polyurethane embossed decorative panels according to claim 1, characterized in that, The antifouling additive is Silok-8586 from Sloco.

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