Solid optical material as well as preparation method and application thereof

Abstract

The invention discloses a solid optical material and a preparation method and application thereof, and relates to the technical field of optical materials, according to the solid optical material and the preparation method and application thereof, a water-based photocuring material is adopted as a main body, the VOC content is low (smaller than 50 g / L), the UV curing energy consumption is reduced by 60% compared with that of traditional thermocuring, and no solvent is left; through compounding of the resin brightener and the gloss oil (the HLB value is 8-12), the 60-degree glossiness of the cured surface is larger than or equal to 95 GU, meanwhile, after the mother-of-pearl inlay powder is modified through the silane coupling agent, the situation of non-uniform dispersion is avoided, the stable flickering effect can be improved, and the problems of sedimentation and non-uniform glossiness of a traditional material are solved; after synergistic optimization of the components, the coating is suitable for spraying, roller coating and other processes, the curing efficiency is high, the mother-of-pearl inlay powder is free of sedimentation and layering, the yield is increased by 30% or above, and the applicability in the fields of high-end electronic product shells, artware and the like is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical materials, and in particular to a solid optical material, a preparation method and application thereof. Background Art

[0002] The preparation methods and applications of existing solid optical materials still have the following drawbacks in practical use:

[0003] Existing solid optical materials mostly use solvent-based systems, which have problems such as high VOC emissions, high curing energy consumption, and complex processes; although water-based photocurable materials are environmentally friendly, they generally have defects such as insufficient hardness, poor gloss, and single decorative effect.

[0004] Mother-of-pearl powder (shell powder) is often used to enhance decorative effects, but traditional processes often lead to sedimentation and uneven dispersion, resulting in unstable optical effects. Compounding resin brighteners with polishes can lead to compatibility issues, affecting surface smoothness. Fragrances are easily volatilized after addition or damaged by the high temperatures of curing, resulting in poor durability. High-end decorative materials require materials that combine environmental friendliness, high gloss, dynamic visual effects (such as mother-of-pearl shimmer), and color adjustability—all three of which are difficult to achieve with existing technologies. Summary of the Invention

[0005] The purpose of the present invention is to provide a solid optical material, a preparation method and application thereof, so as to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a solid optical material, a preparation method thereof, and an application thereof, comprising the following components in parts by weight:

[0007] 50 parts of water-based light-curing materials, 2 parts of resin brightener, 10 parts of bright oil, 2 parts of essence, 35 parts of mother-of-pearl powder, and 1 part of pigment.

[0008] Furthermore, the water-based photocurable material is at least one of water-based polyurethane acrylate or water-based epoxy acrylate, and the curing wavelength is 320-400 nm.

[0009] Furthermore, the resin brightener is a modified silicone brightener with an HLB value of 8-12; the bright oil is a water-based nitrocellulose bright oil with a viscosity range of 200-500 cP and a temperature of 25°C.

[0010] Furthermore, the particle size of the snail powder is 5-50 μm, and the surface is treated with a silane coupling agent, wherein the silane coupling agent is KH-570 or KH-550.

[0011] Furthermore, the flavor is a microencapsulated flavor, the microcapsule wall material is a gelatin-gum arabic complex, and the core material is at least one of an ester or floral flavor.

[0012] A method for preparing a solid optical material comprises the following steps:

[0013] (1) Pretreatment: Mix the snail powder with the ethanol solution of silane coupling agent and dry it;

[0014] (2) Mixing and dispersion: Mix the water-based light-curing material, resin brightener, and bright oil at a low speed, add the pigment and pre-treated snail powder, and disperse them by ultrasonication;

[0015] (3) Flavor addition: Add microencapsulated flavor and stir at low speed;

[0016] (4) Curing: After coating on the substrate, UV curing is performed with a curing intensity of 60-100mW / cm² and a curing time of 20-60s.

[0017] Furthermore, the drying temperature in step (1) is 70-90° C., and the ultrasonic dispersion frequency in step (2) is 30-50 kHz, and the time is 15-30 min.

[0018] The invention discloses an application of a solid optical material in decorative plates, electronic product housings or handicrafts.

[0019] Compared with the prior art, the preparation method and application of a solid optical material provided by the present invention have the following beneficial effects:

[0020] This solid optical material, its preparation method and application, uses water-based photocurable materials as the main body, has a low VOC content (<50g / L), and the energy consumption of UV curing is 60% lower than that of traditional thermal curing, and there is no solvent residue. Through the compounding of resin brightener and bright oil (HLB value 8-12), the 60° glossiness of the surface after curing is made ≥95GU. At the same time, after the mother-in-law powder is modified with a silane coupling agent, uneven dispersion is avoided, the stable flashing effect can be improved, and the sedimentation and uneven gloss problems of traditional materials are solved. After the components are synergistically optimized, it is suitable for spraying, roller coating and other processes, with high curing efficiency, and the mother-in-law powder has no sedimentation and stratification, and the finished product rate is increased by more than 30%, which improves the applicability of high-end electronic product casings, handicrafts and other fields. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below.

[0022] A solid optical material, a preparation method and an application thereof, comprising the following components in parts by weight:

[0023] 50 parts of water-based light-curing materials, 2 parts of resin brightener, 10 parts of bright oil, 2 parts of essence, 35 parts of mother-of-pearl powder, and 1 part of pigment.

[0024] The water-based light-curing material is at least one of water-based polyurethane acrylate or water-based epoxy acrylate, and the curing wavelength is 320-400nm.

[0025] The resin brightener is a modified silicone brightener with an HLB value of 8-12; the bright oil is a water-based nitrocellulose bright oil with a viscosity range of 200-500 cP and a temperature of 25°C.

[0026] The particle size of the snail powder is 5-50 μm, and the surface of the snail powder is treated with a silane coupling agent, wherein the silane coupling agent is KH-570 or KH-550.

[0027] The flavor is a microencapsulated flavor, the microcapsule wall material is a gelatin-gum arabic compound, and the core material is at least one of an ester or a floral flavor.

[0028] A method for preparing a solid optical material comprises the following steps:

[0029] (1) Pretreatment: Mix the snail powder with the ethanol solution of silane coupling agent and dry it;

[0030] (2) Mixing and dispersion: Mix the water-based light-curing material, resin brightener, and bright oil at a low speed, add the pigment and pre-treated snail powder, and disperse them by ultrasonication;

[0031] (3) Flavor addition: Add microencapsulated flavor and stir at low speed;

[0032] (4) Curing: After coating on the substrate, UV curing is performed with a curing intensity of 60-100mW / cm² and a curing time of 20-60s.

[0033] The drying temperature in step (1) is 70-90° C., and the ultrasonic dispersion frequency in step (2) is 30-50 kHz, and the time is 15-30 min.

[0034] The invention discloses an application of a solid optical material in decorative plates, electronic product housings or handicrafts.

[0035] Example 1

[0036] (1) Raw material preparation

[0037] Water-based photocurable material: 50 parts of water-based polyurethane acrylate is selected, and its curing wavelength is 320-400nm.

[0038] Resin brightener: Use 2 parts of modified silicone brightener with an HLB value of 8.

[0039] Bright oil: Use 10 parts of water-based nitrocellulose bright oil with a viscosity of 200 cP at 25°C.

[0040] Fragrance: Prepare 2 parts of microencapsulated flavor, using gelatin-gum arabic complex as the microcapsule wall material and ethyl acetate as the core material.

[0041] Snail powder: 35 parts of snail powder with a particle size of 5 μm were taken, and its surface was treated with silane coupling agent KH-570.

[0042] Pigment: Choose 1 part color powder.

[0043] (2) Preparation steps

[0044] Pretreatment: Mix 35 parts of snail powder with an ethanol solution containing KH-570 (the KH-570 content is 5% of the mass of the ethanol solution), and dry it at 70°C for 2 hours to fully graft the silane coupling agent on the surface of the snail powder and improve its compatibility with other components.

[0045] Mixing and dispersion: Add 50 parts of water-based polyurethane acrylate, 2 parts of modified silicone brightener, and 10 parts of water-based nitrocellulose bright oil into a stirring container and stir at a low speed of 100 r / min for 10 minutes for preliminary mixing; then add 1 part of color powder and 35 parts of pretreated snail powder, and use ultrasonic dispersion with a frequency of 30 kHz for 15 minutes to ensure that all components are evenly dispersed to form a stable mixture.

[0046] Adding flavor: Add 2 parts of microencapsulated flavor to the above mixture and continue stirring at a low speed of 100 r / min for 10 minutes to evenly distribute the flavor in the system.

[0047] Curing: The mixed material is evenly coated on the decorative board substrate with a coating thickness of 0.3mm. UV curing equipment is used for curing with a curing intensity of 60mW / cm² and a curing time of 60s to fully cure the material and form a solid optical material with good optical properties and decorative effects.

[0048] Example 2

[0049] (1) Raw material preparation

[0050] Water-based photocurable material: 50 parts of water-based epoxy acrylate is selected, and its curing wavelength is in the range of 320-400nm.

[0051] Resin brightener: Use 2 parts of modified silicone brightener with an HLB value of 12.

[0052] Bright oil: Use 10 parts of water-based nitrocellulose bright oil with a viscosity of 500 cP at 25°C.

[0053] Essence: Prepare 2 parts of microencapsulated essence, the microcapsule wall material is gelatin-gum arabic complex, and the core material is rose essence.

[0054] Snail powder: 35 parts of snail powder with a particle size of 50 μm were taken, and its surface was treated with silane coupling agent KH-550.

[0055] Pigment: Choose 1 part light-changing powder.

[0056] (2) Preparation steps

[0057] Pretreatment: Mix 35 parts of snail powder with an ethanol solution containing KH-550 (the KH-550 content is 8% of the mass of the ethanol solution), and dry it at 90°C for 1.5 hours to enhance the bonding strength between the snail powder and other raw materials.

[0058] Mixing and dispersion: Place 50 parts of water-based epoxy acrylate, 2 parts of modified silicone brightener, and 10 parts of water-based nitrocellulose bright oil in a stirring container and stir at a low speed of 150r / min for 12 minutes to mix; then add 1 part of optically variable powder and 35 parts of pre-treated snail powder, and ultrasonically disperse at a frequency of 50kHz for 30 minutes to ensure that all components are fully mixed.

[0059] Flavor addition: Add 2 parts of microencapsulated flavor and stir at a low speed of 150r / min for 12 minutes to evenly disperse the flavor in the system.

[0060] Curing: The mixture is coated on the substrate of the electronic product housing with a coating thickness of 0.2mm. The UV curing equipment is used to complete the curing process with a curing intensity of 100mW / cm² and a curing time of 20s to obtain a solid optical material suitable for electronic product housings.

[0061] The above description is merely illustrative of certain exemplary embodiments of the present invention. It is understood that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of the claims.

Claims

1. A solid optical material, characterized in that The following components are included by weight: 50 parts of water-based light-curing materials, 2 parts of resin brightener, 10 parts of bright oil, 2 parts of essence, 35 parts of mother-of-pearl powder, and 1 part of pigment.

2. A solid optical material according to claim 1, characterized in that: The water-based photocurable material is at least one of water-based polyurethane acrylate or water-based epoxy acrylate, and the curing wavelength is 320-400 nm.

3. A solid optical material according to claim 1, characterized in that: The resin brightener is a modified silicone brightener with an HLB value of 8-12; the bright oil is a water-based nitrocellulose bright oil with a viscosity range of 200-500 cP and a temperature of 25°C.

4. A solid optical material according to claim 1, characterized in that: The particle size of the snail powder is 5-50 μm, and the surface is treated with a silane coupling agent, wherein the silane coupling agent is KH-570 or KH-550.

5. The solid optical material according to claim 1, characterized in that: The flavor is a microencapsulated flavor, the microcapsule wall material is a gelatin-gum arabic compound, and the core material is at least one of an ester or a floral flavor.

6. The method for preparing a solid optical material according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) Pretreatment: Mix the snail powder with the ethanol solution of silane coupling agent and dry it; (2) Mixing and dispersion: Mix the water-based light-curing material, resin brightener, and bright oil at a low speed, add the pigment and pre-treated snail powder, and disperse them by ultrasonication; (3) Flavor addition: Add microencapsulated flavor and stir at low speed; (4) Curing: After coating on the substrate, UV curing is performed with a curing intensity of 60-100mW / cm² and a curing time of 20-60s.

7. The method for preparing a solid optical material according to claim 6, wherein: The drying temperature in step (1) is 70-90° C., and the ultrasonic dispersion frequency in step (2) is 30-50 kHz, and the time is 15-30 min.

8. Use of a solid optical material according to any one of claims 1 to 5 in decorative panels, electronic product housings or handicrafts.