Organic substrate surface treatment composition, organic substrate surface treatment method, optical components and display panel

Abstract

This application provides an organic substrate surface treatment composition, an organic substrate surface treatment method, an optical component, and a display panel. The organic substrate surface treatment composition includes: a first solvent, wherein the dipole moment of the first solvent is greater than or equal to 10 × 10⁻⁶. ‑30 Coulomb-Miehn; second solvent, wherein the dipole moment of the second solvent is greater than 5 × 10⁻⁶. ‑30 And less than 10×10 ‑30 The solvent comprises Coulomb-Millet, the second solvent having a boiling point of 50–150 degrees Celsius; and acrylic monomers. The organic substrate surface treatment composition provided in this application can enhance the adhesion of subsequently formed coatings to organic substrates.

Description

Technical Field

[0001] This application relates to the field of polymer materials technology, specifically to an organic substrate surface treatment composition, an organic substrate surface treatment method, an optical component, and a display panel. Background Technology

[0002] Organic polymer materials are widely used in electronics, chemistry, and machinery due to their excellent physical and chemical properties, such as in the manufacture of automotive parts, display devices, and household appliances.

[0003] To improve the hardness, corrosion resistance, wear resistance, weather resistance, and other properties of organic polymer materials, or for decorative purposes, a coating is often applied to the surface of a substrate formed of organic polymer materials. Therefore, the adhesion of the coating to the organic substrate directly affects the durability of the coating and the durability of the organic substrate.

[0004] However, the molecular characteristics of organic substrates and coating components can lead to a significant reduction in adhesion between the coating and the organic substrate. For example, polymethyl methacrylate (PMMA) contains only low-polarity ester groups in its molecular structure. When the components in the surface coating have high molecular functionality, the direct formation of the coating on the PMMA surface can generate significant internal stress, resulting in poor adhesion between the coating and the PMMA. Summary of the Invention

[0005] In view of this, this application provides an organic substrate surface treatment composition, an organic substrate surface treatment method, an optical component, and a display panel, which can enhance the adhesion of the coating to the organic substrate.

[0006] This application provides an organic substrate surface treatment composition, comprising:

[0007] The first solvent has a dipole moment greater than or equal to 10 × 10⁻⁶. -30 Kulen Mi;

[0008] The second solvent has a dipole moment greater than 5 × 10⁻⁶. -30 And less than 10×10 -30 Coulomb-Mi, the second solvent has a boiling point of 50–150 degrees Celsius; and

[0009] Acrylic monomers.

[0010] In one embodiment of this application, the first solvent includes one or more of formamide, methylformamide, N,N-dimethylformamide, N,N-diethylformamide, acetamide, methylacetamide, N,N-dimethylacetamide, N-methylpropionamide, 2-pyrrolidone, N-methylpyrrolidone, ε-caprolactam, dimethyl sulfoxide, dimethyl sulfone, and sulfolane.

[0011] In one embodiment of this application, the second solvent includes methanol, ethanol, propanol, isopropanol, butanol, isobutanol, tert-butanol, pentanol, 2-methyl-1-butanol, isoamyl alcohol, sec-amyl alcohol, tert-amyl alcohol, tetrahydrofuran, tetrahydropyran, 2-methyltetrahydrofuran, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, acetal, ethyl formate, propyl formate, butyl formate, isobutyl formate, amyl formate, isoamyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, isobutyl acetate, acetic acid. One or more of the following: sec-butyl acetate, tert-butyl acetate, amyl acetate, isoamyl acetate, methyl isoamyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, isopropyl butyrate, methyl isobutyrate, ethyl isobutyrate, acetone, butanone, 2-pentanone, 3-pentanone, 3-methyl-2-butanone, 2-hexanone, 3-hexanone, 2-methyl-3-pentanone, 4-methyl-2-pentanone, 2,4-dimethyl-3-pentanone, cyclopentanone, and cyclohexanone.

[0012] In one embodiment of this application, the acrylic monomer includes one or more of acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, isobutyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, hydroxyethyl acrylate, tetrahydrofuran acrylate, lauryl acrylate, isooctyl acrylate, and hydroxy acrylate.

[0013] In one embodiment of this application, the organic substrate surface treatment composition comprises 1 to 10 parts by weight of the first solvent, 65 to 94 parts by weight of the second solvent, and 5 to 25 parts by weight of the acrylic monomer.

[0014] This application provides a method for surface treatment of an organic substrate, characterized by comprising the following steps:

[0015] The organic substrate surface treatment composition described in the above embodiments is applied to the surface of the organic substrate;

[0016] The organic substrate surface treatment composition is dried to form an organic substrate with a rough structure on the surface having a specific morphology.

[0017] This application provides an optical component, including:

[0018] An organic substrate having a surface, the surface being obtained by surface treatment using the organic substrate surface treatment method described in the above embodiments, wherein the root mean square surface roughness of the surface is 10-1000 nanometers and the maximum height surface roughness is 20-2000 nanometers.

[0019] In one embodiment of this application, the optical component further includes a coating disposed on the surface.

[0020] In one embodiment of this application, the coating comprises a polyurethane acrylate oligomer with a functionality of six or more.

[0021] In one embodiment of this application, the coating comprises a hexafunctional polyurethane acrylate oligomer, the hexafunctional polyurethane acrylate oligomer having the following structure:

[0022]

[0023] In one embodiment of this application, the coating further includes an acrylate monomer with a functionality of three or more and a photoinitiator;

[0024] The coating comprises 60 to 100 parts by weight of a polyurethane acrylate oligomer with a functionality of six or more.

[0025] 0 to 40 parts by weight of the acrylate monomer with a functionality of ≥3; and

[0026] 1 to 10 parts by weight of the photoinitiator.

[0027] This application embodiment also provides a display panel, including:

[0028] Panel body, and

[0029] The optical component described in the above embodiments is disposed on the surface of the panel body, and the organic substrate is close to the panel body.

[0030] The first solvent and acrylic monomers in the organic substrate surface treatment composition provided in this application erode the surface of the organic substrate, forming a rough structure. The second solvent regulates the morphology of the rough structure: on the one hand, the second solvent can balance the degree of erosion of the organic substrate surface by the first solvent and acrylic monomers; on the other hand, because the boiling point of the second solvent is relatively low, it is beneficial to the drying and rapid removal of the organic substrate surface treatment composition, thereby making the surface treatment process more controllable. The organic substrate surface treatment composition provided in the embodiments of this application can enable the organic substrate to form a surface with a rough structure of a specific morphology, increasing the adhesion area of ​​the subsequently formed coating, and the interlocking of the unevenness between the organic substrate surface and the coating forms a mechanical interlock, thereby improving the adhesion of the coating to the organic substrate. Attached Figure Description

[0031] Figure 1 This is an atomic force microscope (AFM) image of the surface of an organic substrate after surface treatment using the organic substrate surface treatment composition provided in the embodiments of this application.

[0032] Figure 2 This is a flowchart of the organic substrate surface treatment method provided in the embodiments of this application.

[0033] Figure 3 This is a schematic diagram of the optical components provided in the embodiments of this application.

[0034] Figure 4 This is a schematic diagram of the surface roughness of PMMA after surface treatment in an embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the display panel provided in an embodiment of this application. Detailed Implementation

[0036] This application provides an organic substrate surface treatment composition, an organic substrate surface treatment method, an optical component, and a display panel. Various embodiments of the invention are described in the form of a range only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the invention. Therefore, the description of the range includes all possible sub-ranges as well as single numerical values ​​within that range. For example, it should be considered that a range description from 1 to 6 specifically discloses sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6. Furthermore, numerical ranges herein include any referenced numbers (fractions or integers) within the referred range.

[0037] One embodiment of this application provides an organic substrate surface treatment composition, comprising:

[0038] The first solvent has a dipole moment greater than or equal to 10 × 10⁻⁶. -30 Kulen Mi;

[0039] The second solvent has a dipole moment of 5 × 10⁻⁶. -30 ~10×10 -30 Coulomb-Mi, the second solvent has a boiling point of 50–150 degrees Celsius; and

[0040] Acrylic monomers.

[0041] Specifically, the surface of the organic substrate is eroded using a first solvent and acrylic monomers in the organic substrate surface treatment composition to form a rough structure. A second solvent in the composition is used to control the morphology of the rough structure: on the one hand, the second solvent can balance the degree of erosion of the organic substrate surface by the first solvent and acrylic monomers; on the other hand, because the second solvent has a relatively low boiling point, it facilitates the drying and rapid removal of the organic substrate surface treatment composition, thus making the surface treatment process more controllable. Therefore, the organic substrate surface treatment composition provided in this application can be used for the surface treatment of organic substrates to form a rough surface. Specific examples of organic substrates include, but are not limited to: polyimide (PI), polyethylene terephthalate (PET), triacetyl cellulose (TAC), polycarbonate (PC), polymethyl methacrylate (PMMA), etc.

[0042] Please refer to Figure 1 Since the organic substrate surface treatment composition provided in this application embodiment can enable the organic substrate to form a rough structure with a specific morphology, it increases the adhesion area of ​​the subsequently formed coating, and the surface of the organic substrate and the subsequently formed coating are interlocked to form a mechanical interlock, thereby improving the adhesion of the coating to the organic substrate.

[0043] The first solvent includes one or more of formamide, methylformamide, N,N-dimethylformamide, N,N-diethylformamide, acetamide, methylacetamide, N,N-dimethylacetamide, N-methylpropionamide, 2-pyrrolidone, N-methylpyrrolidone, ε-caprolactam, dimethyl sulfoxide, dimethyl sulfone, and sulfolane.

[0044] The second solvent includes methanol, ethanol, propanol, isopropanol, butanol, isobutanol, tert-butanol, pentanol, 2-methyl-1-butanol, isoamyl alcohol, sec-amyl alcohol, tert-amyl alcohol, tetrahydrofuran, tetrahydropyran, 2-methyltetrahydrofuran, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, acetal, ethyl formate, propyl formate, butyl formate, isobutyl formate, amyl formate, isoamyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, isobutyl acetate, sec-butyl acetate, tert-butyl acetate, etc. Butyl acetate, amyl acetate, isoamyl acetate, methyl isoamyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, isopropyl butyrate, methyl isobutyrate, ethyl isobutyrate, acetone, butanone, 2-pentanone, 3-pentanone, 3-methyl-2-butanone, 2-hexanone, 3-hexanone, 2-methyl-3-pentanone, 4-methyl-2-pentanone, 2,4-dimethyl-3-pentanone, cyclopentanone, cyclohexanone.

[0045] Acrylic monomers include one or more of the following: acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, isobutyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, hydroxyethyl acrylate, tetrahydrofuran acrylate, lauryl acrylate, isooctyl acrylate, and hydroxy acrylate.

[0046] The organic substrate surface treatment composition comprises 1 to 10 parts by weight of a first solvent, 65 to 94 parts by weight of a second solvent, and 5 to 25 parts by weight of an acrylic monomer. Here, "parts by weight" indicates the mass of each component added. There is no particular limitation on the actual weight of each "part," which can be 1 gram, 5 grams, 10 grams, 1 kilogram, 5 kilograms, 10 kilograms, etc., adjusted according to the needs of actual production scale, as long as the proportions between the components are maintained. Specifically, the mass ratio of the first solvent : the mass ratio of the second solvent : the mass ratio of the acrylic monomer is (1 to 10) : (65 to 94) : (5 to 25). The above ratio can be based on the first solvent; the proportions of other components relative to the first solvent can be freely adjusted within the listed range as needed. Adjusting the proportion of one component does not affect the adjustment of the proportion of another component. Furthermore, the specific morphology of the rough structure formed by etching can be adjusted by adjusting the specific component proportions of the organic substrate surface treatment composition.

[0047] Please refer to Figure 2 This application provides a method for surface treatment of an organic substrate, comprising the following steps:

[0048] S1: Apply the organic substrate surface treatment composition described in the preceding embodiments to the surface of the organic substrate.

[0049] The organic substrate can be made of polymethyl methacrylate (PMMA), which can be applied to the outside of the display panel to protect it. Specifically, the organic substrate surface treatment composition can be formed on the surface of the organic substrate by a roll-to-roll coating method. Specific examples of roll-to-roll coating methods include, but are not limited to: roller coating, gravure coating, reverse coating, roller brush coating, dip coating, spray coating, spin coating, pneumatic doctor blade coating, and die coating.

[0050] S2: Dry the organic substrate surface treatment composition to form an organic substrate with a rough structure having a specific morphology.

[0051] Specifically, from the perspective of being able to quickly remove the surface treatment composition of the organic substrate and making the processing time precisely controllable, the drying method can be heat drying.

[0052] Please refer to Figure 3 This application provides an optical component 100, including an organic substrate 10, which has a surface 11. Specifically, the surface 11 has a rough structure with a specific morphology, and the root mean square surface roughness Rq of the surface 11 is 10-1000 nanometers, and the maximum height surface roughness Rz is 20-2000 nanometers. The surface 11 is obtained by surface treatment using the organic substrate surface treatment method described in the foregoing embodiments.

[0053] The surface of an object obtained through machining or other processing methods will have small-spaced peaks and troughs in its microscopic contour. Surface roughness is an indicator used to describe the microscopic geometric characteristics of these peaks and troughs, including their height and spacing. Please refer to [reference needed]. Figure 4 The baseline is the centerline of the profile used to evaluate roughness parameters. In this invention, the baseline is the arithmetic mean centerline of the profile, meaning that the areas of the two parts of the profile above and below the baseline are equal within the sampling length. The root mean square surface roughness Rq represents the root mean square value of the ordinate Z of each peak and trough of the profile relative to the baseline. The maximum height surface roughness Rz represents the sum of the maximum absolute value of the ordinate Z of the peak of the profile relative to the baseline and the maximum absolute value of the ordinate Z of the trough of the profile relative to the baseline. Lower Rq and Rz indicate lower surface roughness of the object.

[0054] Specifically, the root mean square surface roughness Rq of surface 11 is 10-1000 nanometers, and the maximum height surface roughness Rz is 20-2000 nanometers. This increases the adhesion area between the subsequently formed coating 20 and surface 11, thereby improving the adhesion of coating 20 to organic substrate 10. At the same time, it prevents the surface roughness of surface 11 from being too high, which would prevent the coating 20 from covering the rough surface of surface 11 and leaving air between surface 11 and coating 20, thus affecting the adhesion between coating 20 and organic substrate 10.

[0055] Please continue to refer to this. Figure 3 The surface 11 of the optical component 100 may be provided with a coating 20. The coating 20 may be a coating with a certain hardness, thereby imparting a certain hardness and wear resistance to the organic substrate 10. The thickness of the coating 20 may be 1–10 micrometers, specifically 2–8 micrometers, and more specifically 3–6 micrometers. The coating 20 may be formed on the surface 11 of the organic substrate 10 by a roll-to-roll coating method. Specific examples of roll-to-roll coating methods include, but are not limited to: roller coating, gravure coating, reverse coating, roller brush coating, dip coating, spray coating, spin coating, pneumatic doctor blade coating, and die coating.

[0056] Since the optical component 100 provided in this application embodiment has an organic substrate 10 treated with the organic substrate surface treatment composition provided in this application embodiment to form a rough structure 11 with a specific morphology, on the one hand, the adhesion area of ​​the coating 20 is increased, and on the other hand, after the coating 20 is formed, the interlocking between the surface 11 and the coating 20 forms a mechanical interlock, thereby improving the adhesion of the coating 20 to the organic substrate 10, making the coating 20 less prone to warping, cracking and other defects, and improving the durability of the optical component 100.

[0057] The coating 20 comprises polyurethane acrylate oligomers with a functionality of six or more. Specifically, higher functionality results in higher photocuring activity, which is beneficial for increasing crosslinking density. The inclusion of polyurethane acrylate oligomers with a functionality of six or more in the coating 20 allows the coating 20 to form a denser crosslinked structure after photocuring, thereby improving the mechanical properties of the coating 20 and thus increasing its hardness.

[0058] Coating 20 comprises a hexafunctional polyurethane acrylate oligomer, said hexafunctional polyurethane acrylate oligomer having the following structure:

[0059]

[0060] The hexafunctional polyurethane acrylate oligomer shown has multiple carbon ring structures introduced into its molecular structure, which further enhances the overall rigidity of the molecular structure, thereby further improving the mechanical properties of the coating 20 and thus further increasing the hardness of the coating 20.

[0061] The coating 20 also includes acrylate monomers with a functionality of ≥3, which can dissolve and dilute the polyurethane acrylate oligomers with a functionality of ≥6 in the coating 20, adjust the viscosity of the components, and adjust the curing rate and crosslinking properties of the coating 20. Specifically, specific examples of acrylate monomers with a functionality of ≥3 in this application include, but are not limited to, one or more of the following: trimethylolpropane tri(meth)acrylate, trimethylolpropane tri(meth)acrylate, glycerol tri(meth)acrylate, pentaerythritol tri(meth)acrylate, di(trimethylolpropane)tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, di(trimethylolpropane)tetra(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, and di(trimethylolpropane)hexa(meth)acrylate.

[0062] The coating 20 also includes a photoinitiator. Under light irradiation, the photoinitiator absorbs energy of a specific wavelength, generating active intermediates such as free radicals and cations capable of initiating polymerization, thereby initiating polymerization and cross-linking reactions of the prepolymer and monomer components, ultimately achieving curing. Specifically, the photoinitiator may include one or more of type I and type II photoinitiators. Type I (cracking type) photoinitiators generate free radicals by causing molecular decomposition through differences in chemical structure or molecular binding energy. Specific examples of type I photoinitiators include, but are not limited to, one or more of the following compounds: acetophenones such as 4-phenoxydichloroacetophenone, 4-tert-butyldichloroacetophenone, 4-tert-butyltrichloroacetophenone, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylacetone, 1(4-isopropylphenyl)-2-hydroxy-2-methylacetone, 1(4-dodecylphenyl)-2-hydroxy-2-methylacetone, 4-(2-hydroxyethoxy)phenyl(2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexylphenyl ketone; benzoin compounds such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzyl dimethyl ketal, etc.; acylphosphine oxides and diacene compounds. Type II (hydrogen-abstracting) photoinitiators, after absorbing energy, undergo bimolecular interactions with co-initiators (i.e., hydrogen donors, such as tertiary amines) in the excited state, generating active free radicals. Specific examples of type II photoinitiators include, but are not limited to, one or more of the following compounds: benzophenone compounds such as benzophenone, benzoylbenzoic acid, benzoylbenzoic acid methyl ether, 4-phenylbenzophenone, hydroxybenzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3'-dimethyl-4-methoxybenzophenone, etc.; thioxanthone compounds such as thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2,4-dimethylthioxanthone, isopropylthioxanthone, etc.

[0063] Coating 20 comprises 60-100 parts by weight of a polyurethane acrylate oligomer with a functionality of ≥6, 0-40 parts by weight of an acrylate monomer with a functionality of ≥3, and 1-10 parts by weight of a photoinitiator. Specifically, "0-40 parts by weight of acrylate monomer with a functionality of ≥3" indicates that the acrylate monomer with a functionality of ≥3 may or may not be added. "Parts by weight" represents the mass of each component added. There is no particular limitation on the actual weight of each "part," which can be 1 gram, 5 grams, 10 grams, 1 kilogram, 5 kilograms, 10 kilograms, etc., adjusted according to the actual production scale requirements, as long as the proportions between the components are maintained. Specifically, the mass ratio of polyurethane acrylate oligomer with a functionality of ≥6 to acrylate monomer with a functionality of ≥3 to photoinitiator is (60-100): (0-40): (1-10). The above proportions can be based on polyurethane acrylate oligomers with a functionality of six or more. The proportions of other components can be freely adjusted within the listed range as needed, relative to polyurethane acrylate oligomers with a functionality of six or more. Adjusting the proportion of one component does not affect the adjustment of the proportion of another component.

[0064] For ease of application, the coating 20 of this application also includes a solvent. Specifically, the coating 20 may include 100 to 400 parts by weight of solvent, i.e., based on a polyurethane acrylate oligomer with a functionality of ≥6, the mass ratio of the polyurethane acrylate oligomer with a functionality of ≥6 to the mass of the solvent is (60 to 100): (100 to 400). The proportion of solvent relative to the polyurethane acrylate oligomer with a functionality of ≥6 can be freely adjusted as needed within the listed range. Specific examples of solvents include, but are not limited to, one or more of the following solvents: alcohols such as methanol, ethanol, isopropanol; esters such as ethyl acetate, propyl acetate, butyl acetate; ketones such as acetone, butanone, cyclohexanone; benzenes such as toluene, xylene, etc. The boiling point of the solvent may be 50 to 150 degrees Celsius. Specifically, when the boiling point of the solvent is below 50 degrees Celsius, the solvent is highly volatile, which will affect the thickness of the coating 20 formed by coating; when the boiling point of the solvent is above 150 degrees Celsius, the solvent drying process will become difficult, which will affect the formation efficiency of the coating 20 and increase the process cost.

[0065] Please refer to Figure 5This application provides a display panel 200, including the optical component 100 provided in the aforementioned embodiments. Specifically, the display panel 200 includes the optical component 100 and a panel body 110. The optical component 100 is disposed on the surface of the panel body 110, and the organic substrate 10 of the optical component 100 is close to the panel body 110. The panel body 110 can be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a micro light-emitting diode (Micro-LED) display panel, a mini light-emitting diode (Mini-LED) display panel, or a liquid crystal display panel.

[0066] The optical component 100 can protect the panel body 110. Since the coating 20 in the optical component 100 provided in the above embodiment has enhanced adhesion to the organic substrate 10, the coating 20 is less prone to warping, cracking and other defects. Therefore, the optical component 100 can better protect the overall surface of the display panel 200 and improve the durability of the display panel 200.

[0067] The following describes the organic substrate surface treatment composition, organic substrate surface treatment method, optical components, and display panel of this application through specific embodiments.

[0068] Synthesis of hexafunctional polyurethane acrylate oligomer P1

[0069]

[0070] first step:

[0071]

[0072] 5g of tricyclodecanediethanol and 12g of isophorone diisocyanate were dissolved in 10g of methyl isobutyl ketone, and then 0.05g of bismuth acid catalyst was added. The mixture was reacted in a nitrogen atmosphere at 60°C for 5 hours to obtain isocyanate-terminated prepolymer A1.

[0073] Step Two:

[0074]

[0075] 15g of pentaerythritol triacrylate and 27g of prepolymer A1 obtained in the first step were dissolved in 10g of butyl acetate, and then 0.1g of bismuth acid catalyst was added. The mixture was reacted in a nitrogen atmosphere at 60 degrees Celsius for 6 hours to obtain hexafunctional polyurethane acrylate oligomer P1.

[0076] Example 1: Fabrication of optical component B1

[0077] Surface treatment of organic substrate: The surface treatment composition of organic substrate is rolled onto one surface of organic substrate PMMA for 60 to 100 seconds, and then the solvent is dried in an oven at a temperature of 60 to 120 degrees Celsius to form a surface with a rough structure of a specific morphology.

[0078] Coating preparation: The coating composition is roll-coated onto the surface of an organic substrate PMMA with a rough structure having a specific morphology. The solvent is first dried in an oven at a temperature of 60–120 degrees Celsius; then cured by ultraviolet light at an energy of 100–1000 mJ / cm². 2 The resulting coating has a thickness of 3 to 6 micrometers.

[0079] Examples 2-4: Fabrication of optical components B2-B4

[0080] Optical components B2 to B4 can be prepared using the same method as in Example 1, except that the specific components and proportions of the organic substrate surface treatment composition and coating are different. See Tables 1 and 2 below for details.

[0081] Table 1: Specific components of the organic substrate surface treatment composition used in optical components B1-B4

[0082]

[0083] Table 2: Specific components of the coatings used in optical components B1 to B4

[0084]

[0085]

[0086] Performance evaluation of optical components

[0087] Transmittance performance evaluation: The transmittance is evaluated according to the national standard GB / T 2410.

[0088] Adhesion performance evaluation: The cross-cut adhesion test was used. Specifically, a cross-cut adhesion tester was used to make 10×10 1mm×1mm grids on the coating surface of the optical component. After cleaning off the debris, 3M cross-cut adhesion tape was used to firmly adhere the test grids, and then the tape was quickly pulled off vertically to observe the coating peeling phenomenon.

[0089] Adhesion determination criteria:

[0090] 5B, the scribe line edges are smooth, and there is no coating peeling at the edges and intersections of the scribe line.

[0091] 4B, There are small patches of coating peeling off at the intersection of the lines, and the total peeling area is less than 5%.

[0092] 3B, small patches of coating have peeled off at the edges and intersections of the lines, with the total peeled area ranging from 5% to 15%.

[0093] 2B, where large areas of coating peel off at the edges and intersections of the lines, with the total area of ​​peeling off ranging from 15% to 35%.

[0094] 1B, There are patches of coating peeling off at the edges and intersections of the lines, and the total peeling area is between 35% and 65%.

[0095] 0B, the area of ​​detachment exceeds the 1B standard.

[0096] Pencil hardness performance evaluation: Under a load of 750g, Mitsubishi pencils with hardness from H to 9H were used to draw lines on the coating surface of the optical component. The coating was then observed for any scratches, and the highest pencil hardness that the coating surface of the optical component could withstand without scratches was determined.

[0097] Abrasion resistance evaluation: Under a load of 500g, steel wool (000#) was used to rub the coating surface of the optical component back and forth, and the number of friction cycles when scratches appeared was recorded.

[0098] Table 2: Surface roughness of surface-treated organic substrates in optical components B1-B4

[0099] Example Rq (nanometer) Rz (nanometer) Example 1 380 820 Example 2 270 490 Example 3 150 380 Example 4 560 1200

[0100] Table 3: Performance Evaluation of Optical Components B1-B4

[0101] Example Transmission rate (%) Pencil hardness abrasion resistant Adhesion Example 1 91.8 3H 20 5B Example 2 92.3 4H 30 5B Example 3 92.2 4H 35 5B Example 4 92.5 5H 50 5B

[0102] As shown in Table 2, the surface formed after surface treatment of the organic substrate PMMA using the organic substrate surface treatment composition provided in this application has a specific rough structure, which is beneficial to improving the adhesion of the subsequently formed coating to the organic substrate PMMA. Furthermore, as shown in Table 3, the coatings of the optical components B1 to B4 provided in this application all have an adhesion rating of 5B to the organic substrate PMMA in the cross-cut adhesion test. This indicates that for the organic substrate PMMA surface treated with the organic substrate surface treatment composition provided in this application, the coating formed on its surface shows no significant coating peeling in the cross-cut adhesion test, demonstrating excellent adhesion.

[0103] Meanwhile, please continue to refer to Table 3. The transmittance of the coating of the optical components B1 to B4 provided in this application embodiment is ≥90%, the pencil hardness (750g) is ≥3H, and the abrasion resistance test (500g) is ≥20 cycles, which shows that it can give the optical components excellent hardness and abrasion resistance, and enable the optical components to maintain excellent optical performance.

[0104] The above provides a detailed description of an organic substrate surface treatment composition, an organic substrate surface treatment method, an optical component, and a display panel provided in the embodiments of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application, and should not be construed as a limitation on the scope of protection of this application.

Claims

1. An organic substrate surface treatment composition, characterized in that, The organic substrate is a polymethyl methacrylate substrate, and the organic substrate surface treatment composition includes: The first solvent has a dipole moment greater than or equal to 10 × 10⁻⁶. -30 Coulomb-Mille, wherein the first solvent comprises one or more of formamide, methylformamide, N,N-dimethylformamide, N,N-diethylformamide, acetamide, methylacetamide, N,N-dimethylacetamide, N-methylpropionamide, 2-pyrrolidone, N-methylpyrrolidone, ε-caprolactam, dimethyl sulfoxide, dimethyl sulfone, and sulfolane; The second solvent has a dipole moment greater than 5 × 10⁻⁶. -30 And less than 10×10 -30 Coulomb-Millet, wherein the second solvent has a boiling point of 50-150 degrees Celsius, and the second solvent comprises one or more of methanol, ethanol, propanol, butanol, pentanol, tetrahydrofuran, tetrahydropyran, 2-methyltetrahydrofuran, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, acetal, ethyl formate, propyl formate, butyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, methyl isoamyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, methyl isobutyrate, ethyl isobutyrate, acetone, butanone, 2-pentanone, 3-pentanone, 3-methyl-2-butanone, 2-hexanone, 3-hexanone, 2-methyl-3-pentanone, 4-methyl-2-pentanone, 2,4-dimethyl-3-pentanone, cyclopentanone, and cyclohexanone; and Acrylic monomers, wherein the acrylic monomers include one or more of methyl methacrylate, tetrahydrofuran acrylate, butyl acrylate, and isobutyl methacrylate; The organic substrate surface treatment composition comprises 1 to 10 parts by weight of the first solvent, 65 to 94 parts by weight of the second solvent, and 5 to 25 parts by weight of the acrylic monomer.

2. The organic substrate surface treatment composition according to claim 1, characterized in that, The second solvent includes one or more of isopropanol, isobutanol, tert-butanol, 2-methyl-1-butanol, isoamyl alcohol, sec-amyl alcohol, tert-amyl alcohol, isobutyl formate, isoamyl formate, isobutyl acetate, sec-butyl acetate, tert-butyl acetate, isoamyl acetate, and isopropyl butyrate.

3. A method for surface treatment of an organic substrate, characterized in that, Includes the following steps: Apply the organic substrate surface treatment composition according to claim 1 to the surface of an organic substrate; The organic substrate surface treatment composition is dried to form an organic substrate with a rough surface structure. The root mean square surface roughness of the surface of the organic substrate with the rough structure is 10~1000 nm, and the maximum height surface roughness is 20~2000 nm.

4. An optical component, characterized in that, include: An organic substrate having a surface, the surface being obtained by surface treatment using the organic substrate surface treatment method according to claim 3, wherein the root mean square surface roughness of the surface is 10~1000 nm and the maximum height surface roughness is 20~2000 nm.

5. The optical component according to claim 4, characterized in that, It also includes a coating disposed on the surface.

6. The optical component according to claim 5, characterized in that, The coating comprises a polyurethane acrylate oligomer with a functionality of six or more.

7. The optical component according to claim 6, characterized in that, The coating comprises a hexafunctional polyurethane acrylate oligomer, which has the following structure: 。 8. The optical component according to claim 6, characterized in that, The coating comprises 60 to 100 parts by weight of a polyurethane acrylate oligomer with a functionality of ≥6. 0 to 40 parts by weight of the acrylate monomer with a functionality of ≥3; as well as 1 to 10 parts by weight of the photoinitiator.

9. A display panel, characterized in that, include: Panel body, and The optical component according to any one of claims 4 to 8 is disposed on the surface of the panel body, and the organic substrate is close to the panel body.

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