Anti-fog and dustproof PMMA lens material and preparation method thereof

Abstract

The invention relates to an antifogging and dustproof PMMA lens material and a preparation method thereof, and belongs to the technical field of PMMA lenses, the antifogging and dustproof PMMA lens material comprises the following raw materials by weight: 80%-99% of a PMMA material and 1%-20% of an antifogging and dustproof active agent, and the PMMA material is PMMA resin. According to the antifogging and dustproof PMMA lens material and the preparation method thereof, a PMMA lens is prepared from 80-99% of a PMMA material and 1-20% of an antifogging and dustproof active agent, so that the antifogging and dustproof functions of the PMMA lens can be effectively improved, the application range of the PMMA lens can be greatly widened, secondary coating is not needed, the use cost is greatly reduced, and the application range of the PMMA lens is widened. The anti-fog and dustproof lens material has the advantage of good anti-fog and dustproof effects, and solves the problems that the existing lens material PMMA is not anti-fog and not dustproof, and the application scene of the lens material PMMA is seriously limited.

Description

Technical Field

[0001] The invention relates to the technical field of PMMA lenses, in particular to an anti-fog and dust-proof PMMA lens material and a preparation method thereof. Background Art

[0002] Polymethyl methacrylate (PMMA), also known as acrylic or plexiglass, is a transparent, strong, heat-resistant plastic with excellent optical properties and chemical stability. Due to its high transparency and good processability, PMMA is widely used in glasses, displays, car rearview mirrors and other fields.

[0003] With the rapid development of outdoor monitoring, autonomous driving, low-altitude economy and skiing, the requirements for lens materials are becoming higher and higher, requiring dust and fog resistance on the original basis.

[0004] The existing lens material PMMA is not anti-fog and dust-proof, which limits its application scenarios and is not conducive to the popularization of the PMMA lens material. Therefore, an anti-fog and dust-proof PMMA lens material and a preparation method thereof are proposed to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an anti-fog and dust-proof PMMA lens material and a preparation method thereof, which has the advantages of good anti-fog and dust-proof effects and low production costs, and solves the problem that the existing lens material PMMA is not anti-fog and dust-proof, which seriously limits its application scenarios.

[0006] To achieve the above object, the present invention provides the following technical solution: an anti-fog and dust-proof PMMA lens material, comprising the following raw materials in proportion by weight:

[0007] 80%-99% PMMA-like materials and 1%-20% anti-fog and anti-dust active agents.

[0008] Furthermore, the PMMA-based material is PMMA resin.

[0009] Furthermore, the anti-fog and anti-dust active agent comprises the following raw materials in proportion by weight:

[0010] 14% isopropyl orthotitanate, 30% ethanol, 30% isopropyl alcohol, 7% glacial acetic acid, 16% water and 3% concentrated hydrochloric acid.

[0011] Furthermore, the anti-fog and anti-dust active agent comprises the following preparation steps:

[0012] A1. Mix 14% isopropyl orthotitanate, 15% ethanol, 15% isopropyl alcohol and 7% glacial acetic acid, and stir to obtain solution A.

[0013] A2, mix the remaining 15% ethanol, 15% isopropanol, 16% water and 3% concentrated hydrochloric acid, and mix thoroughly to obtain solution B;

[0014] A3. While stirring, slowly add solution B into solution A to cause a hydrolysis reaction to obtain a glass antifogging agent containing nano-sized TiO2 particles.

[0015] Furthermore, the invention comprises the following raw materials in the following weight proportions: 80% of PMMA-based materials and 20% of anti-fog and anti-dust active agents.

[0016] Furthermore, the invention comprises the following raw materials in the following weight proportions: 90% of PMMA-type materials and 10% of anti-fog and anti-dust active agent.

[0017] Furthermore, the raw materials are included in the following weight proportions: 99% of PMMA-based materials and 1% of anti-fog and anti-dust active agent.

[0018] Another technical problem to be solved by the present invention is to provide a method for preparing an anti-fog and dust-proof PMMA lens, comprising the following steps:

[0019] S1. Raw material preparation: 80%-99% PMMA materials and 1%-20% anti-fog and anti-dust active agents are taken, prepared and weighed respectively, and the weighed materials are used for later use;

[0020] S2, preparing a lens substrate: taking the raw materials in S1 and putting them into a reactor for mixing, reacting them within a certain temperature range, and after the reaction is completed, obtaining a material, cooling the material to 50-60° C.; adding the cooled material into an extruder for extrusion, controlling the barrel temperature and the screw temperature within an appropriate range, and after calendering and curing steps, performing trimming, cleaning and drying to obtain a lens substrate;

[0021] S3, vacuum evaporation coating: the obtained lens substrate is placed in a high vacuum coating machine for uniform rotation, and evacuated to a certain vacuum degree. When the vacuum degree reaches the requirement, the nano material is evenly bombarded by an electron gun to make it reach the melting point of the material and volatilize the coating to form a nano film; on the nano film, an electron gun is used to volatilize the nano anti-fog coating material to form an anti-fog layer; then, the thickness of the low refractive index layer, the high refractive index layer and the anti-fog layer is controlled according to the needs;

[0022] S4. Post-processing of lenses: Conduct necessary inspection and testing on the coated lenses to ensure that their performance meets the design requirements.

[0023] Furthermore, the reaction temperature of the reactor in S2 is 120-140°C, the reaction time of the reactor in S2 is 60-70 minutes, the temperature of the barrel in S2 is 130-160°C, and the temperature of the screw in S2 is 105°C.

[0024] Furthermore, the vacuum degree of the S3 medium and high vacuum coating machine is 0.5-2×10^-2Pa, the thickness of the low refractive index layer in S3 is 50-100nm, the thickness of the high refractive index layer in S3 is 15-40nm, and the thickness of the anti-fog layer in S3 is 10-30nm.

[0025] Compared with the prior art, the present invention provides an anti-fog and dust-proof PMMA lens material and a preparation method thereof, which has the following beneficial effects:

[0026] 1. The anti-fog and dust-proof PMMA lens material and preparation method thereof, by adopting 80%-99% PMMA material and 1%-20% anti-fog and dust-proof active agent to prepare the PMMA lens, can effectively improve the anti-fog and dust-proof function of the PMMA lens, can greatly broaden the application of PMMA lenses, does not need to rely on secondary coating to achieve, greatly reduces the use cost, and achieves the advantages of good anti-fog and dust-proof effect.

[0027] 2. The anti-fog and dust-proof PMMA lens material and preparation method thereof, by adopting the PMMA lens prepared by the above preparation method, can effectively reduce the PMMA lens preparation process, can greatly reduce the preparation cost of PMMA lenses, can effectively reduce the impact on the environment, and greatly improve the environmental protection and sustainability of the preparation, achieving the advantages of low production cost and good environmental protection effect, and solving the problem that the existing lens material PMMA is not anti-fog and dust-proof, which seriously limits its application scenarios. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] In this embodiment, an anti-fog and dust-proof PMMA lens material includes the following raw materials in the following weight proportions: 80% PMMA-like materials and 20% anti-fog and dust-proof active agents. The PMMA lens made by using 80% PMMA-like materials and 20% anti-fog and dust-proof active agents can effectively improve the anti-fog and dust-proof functions of the PMMA lens, can greatly broaden the application of PMMA-like lenses, does not need to be achieved by secondary coating, greatly reduces the use cost, and achieves the advantages of good anti-fog and dust-proof effects.

[0031] Specifically, the PMMA-based material is PMMA resin.

[0032] Specifically, the anti-fog and anti-dust active agent includes the following raw materials in the following weight proportions:

[0033] 14% isopropyl orthotitanate, 30% ethanol, 30% isopropyl alcohol, 7% glacial acetic acid, 16% water and 3% concentrated hydrochloric acid.

[0034] In this embodiment, the anti-fog and anti-dust active agent includes the following preparation steps:

[0035] A1. Mix 14% isopropyl orthotitanate, 15% ethanol, 15% isopropyl alcohol and 7% glacial acetic acid, and stir to obtain solution A.

[0036] A2, mix the remaining 15% ethanol, 15% isopropanol, 16% water and 3% concentrated hydrochloric acid, and mix thoroughly to obtain solution B;

[0037] A3. While stirring, slowly add solution B into solution A to cause a hydrolysis reaction to obtain a glass antifogging agent containing nano-sized TiO2 particles.

[0038] Another technical problem to be solved by the present invention is to provide a method for preparing an anti-fog and dust-proof PMMA lens, comprising the following steps:

[0039] S1. Raw material preparation: 80% PMMA materials and 20% anti-fog and anti-dust active agents are taken, prepared and weighed respectively, and the weighed materials are used for later use;

[0040] S2, preparing a lens substrate: taking the raw materials in S1 and putting them into a reactor for mixing, reacting them within a certain temperature range, and after the reaction is completed, obtaining a material, cooling the material to 50-60° C.; adding the cooled material into an extruder for extrusion, controlling the barrel temperature and the screw temperature within an appropriate range, and after calendering and curing steps, performing trimming, cleaning and drying to obtain a lens substrate;

[0041] S3, vacuum evaporation coating: the obtained lens substrate is placed in a high vacuum coating machine for uniform rotation, and evacuated to a certain vacuum degree. When the vacuum degree reaches the requirement, an electron gun is used to evenly bombard the nano material (such as low refractive index layer materials SiO2, MgF2, high refractive index layer materials ZrO2, Ta2O5) to make it reach the melting point of the material and volatilize the coating to form a nano film; on the nano film, an electron gun is used to volatilize the nano anti-fog coating material (such as cellulose diacetate, nano titanium dioxide) to form an anti-fog layer; then, according to the needs, the thickness of the low refractive index layer, the high refractive index layer and the anti-fog layer is controlled;

[0042] S4. Post-processing of lenses: Conduct necessary inspection and testing on the coated lenses to ensure that their performance meets the design requirements.

[0043] Specifically, the reaction temperature of the reactor in S2 is 120-140°C, the reaction time of the reactor in S2 is 60-70 minutes, the temperature of the barrel in S2 is 130-160°C, and the temperature of the screw in S2 is 105°C.

[0044] Specifically, the vacuum degree of the S3 medium and high vacuum coating machine is 0.5-2×10^-2Pa, the thickness of the low refractive index layer in S3 is 50-100nm, the thickness of the high refractive index layer in S3 is 15-40nm, and the thickness of the anti-fog layer in S3 is 10-30nm.

[0045] Embodiment 2:

[0046] In this embodiment, a PMMA lens material with anti-fog and dust resistance includes the following raw materials in the following weight proportions: 90% PMMA material and 10% anti-fog and dust resistance active agent. The PMMA lens made by using 90% PMMA material and 10% anti-fog and dust resistance active agent can effectively improve the anti-fog and dust resistance function of the PMMA lens, greatly broaden the application of PMMA lenses, do not need to rely on secondary coating to achieve, greatly reduce the use cost, and achieve the advantages of good anti-fog and dust resistance effect.

[0047] Specifically, the PMMA-based material is PMMA resin.

[0048] Specifically, the anti-fog and anti-dust active agent includes the following raw materials in the following weight proportions:

[0049] 14% isopropyl orthotitanate, 30% ethanol, 30% isopropyl alcohol, 7% glacial acetic acid, 16% water and 3% concentrated hydrochloric acid.

[0050] In this embodiment, the anti-fog and anti-dust active agent includes the following preparation steps:

[0051] A1. Mix 14% isopropyl orthotitanate, 15% ethanol, 15% isopropyl alcohol and 7% glacial acetic acid, and stir to obtain solution A.

[0052] A2, mix the remaining 15% ethanol, 15% isopropanol, 16% water and 3% concentrated hydrochloric acid, and mix thoroughly to obtain solution B;

[0053] A3. While stirring, slowly add solution B into solution A to cause a hydrolysis reaction to obtain a glass antifogging agent containing nano-sized TiO2 particles.

[0054] Another technical problem to be solved by the present invention is to provide a method for preparing an anti-fog and dust-proof PMMA lens, comprising the following steps:

[0055] S1. Raw material preparation: 90% PMMA materials and 10% anti-fog and anti-dust active agents are taken, prepared and weighed respectively, and the weighed materials are used for later use;

[0056] S2, preparing a lens substrate: taking the raw materials in S1 and putting them into a reactor for mixing, reacting them within a certain temperature range, and after the reaction is completed, obtaining a material, cooling the material to 50-60° C.; adding the cooled material into an extruder for extrusion, controlling the barrel temperature and the screw temperature within an appropriate range, and after calendering and curing steps, performing trimming, cleaning and drying to obtain a lens substrate;

[0057] S3, vacuum evaporation coating: the obtained lens substrate is placed in a high vacuum coating machine for uniform rotation, and evacuated to a certain vacuum degree. When the vacuum degree reaches the requirement, an electron gun is used to evenly bombard the nano material (such as low refractive index layer materials SiO2, MgF2, high refractive index layer materials ZrO2, Ta2O5) to make it reach the melting point of the material and volatilize the coating to form a nano film; on the nano film, an electron gun is used to volatilize the nano anti-fog coating material (such as cellulose diacetate, nano titanium dioxide) to form an anti-fog layer; then, according to the needs, the thickness of the low refractive index layer, the high refractive index layer and the anti-fog layer is controlled;

[0058] S4. Post-processing of lenses: Conduct necessary inspection and testing on the coated lenses to ensure that their performance meets the design requirements.

[0059] Specifically, the reaction temperature of the reactor in S2 is 120-140°C, the reaction time of the reactor in S2 is 60-70 minutes, the temperature of the barrel in S2 is 130-160°C, and the temperature of the screw in S2 is 105°C.

[0060] Specifically, the vacuum degree of the S3 medium and high vacuum coating machine is 0.5-2×10^-2Pa, the thickness of the low refractive index layer in S3 is 50-100nm, the thickness of the high refractive index layer in S3 is 15-40nm, and the thickness of the anti-fog layer in S3 is 10-30nm.

[0061] Embodiment three:

[0062] In this embodiment, a PMMA lens material with anti-fog and dust resistance includes the following raw materials in the following weight proportions: 99% PMMA material and 1% anti-fog and dust resistance active agent. The PMMA lens made by using 99% PMMA material and 1% anti-fog and dust resistance active agent can effectively improve the anti-fog and dust resistance function of the PMMA lens, greatly broaden the application of PMMA lenses, do not need to rely on secondary coating to achieve, greatly reduce the use cost, and achieve the advantages of good anti-fog and dust resistance effect.

[0063] Specifically, the PMMA-based material is PMMA resin.

[0064] Specifically, the anti-fog and anti-dust active agent includes the following raw materials in the following weight proportions:

[0065] 14% isopropyl orthotitanate, 30% ethanol, 30% isopropyl alcohol, 7% glacial acetic acid, 16% water and 3% concentrated hydrochloric acid.

[0066] In this embodiment, the anti-fog and anti-dust active agent includes the following preparation steps:

[0067] A1. Mix 14% isopropyl orthotitanate, 15% ethanol, 15% isopropyl alcohol and 7% glacial acetic acid, and stir to obtain solution A.

[0068] A2, mix the remaining 15% ethanol, 15% isopropanol, 16% water and 3% concentrated hydrochloric acid, and mix thoroughly to obtain solution B;

[0069] A3. While stirring, slowly add solution B into solution A to cause a hydrolysis reaction to obtain a glass antifogging agent containing nano-sized TiO2 particles.

[0070] Another technical problem to be solved by the present invention is to provide a method for preparing an anti-fog and dust-proof PMMA lens, comprising the following steps:

[0071] S1. Raw material preparation: 99% PMMA material and 1% anti-fog and anti-dust active agent are taken, prepared and weighed respectively, and the weighed materials are used for later use;

[0072] S2, preparing a lens substrate: taking the raw materials in S1 and putting them into a reactor for mixing, reacting them within a certain temperature range, and after the reaction is completed, obtaining a material, cooling the material to 50-60° C.; adding the cooled material into an extruder for extrusion, controlling the barrel temperature and the screw temperature within an appropriate range, and after calendering and curing steps, performing trimming, cleaning and drying to obtain a lens substrate;

[0073] S3, vacuum evaporation coating: the obtained lens substrate is placed in a high vacuum coating machine for uniform rotation, and evacuated to a certain vacuum degree. When the vacuum degree reaches the requirement, an electron gun is used to evenly bombard the nano material (such as low refractive index layer materials SiO2, MgF2, high refractive index layer materials ZrO2, Ta2O5) to make it reach the melting point of the material and volatilize the coating to form a nano film; on the nano film, an electron gun is used to volatilize the nano anti-fog coating material (such as cellulose diacetate, nano titanium dioxide) to form an anti-fog layer; then, according to the needs, the thickness of the low refractive index layer, the high refractive index layer and the anti-fog layer is controlled;

[0074] S4. Post-processing of lenses: Conduct necessary inspection and testing on the coated lenses to ensure that their performance meets the design requirements.

[0075] Specifically, the reaction temperature of the reactor in S2 is 120-140°C, the reaction time of the reactor in S2 is 60-70 minutes, the temperature of the barrel in S2 is 130-160°C, and the temperature of the screw in S2 is 105°C.

[0076] Specifically, the vacuum degree of the S3 medium and high vacuum coating machine is 0.5-2×10^-2Pa, the thickness of the low refractive index layer in S3 is 50-100nm, the thickness of the high refractive index layer in S3 is 15-40nm, and the thickness of the anti-fog layer in S3 is 10-30nm.

[0077] The PMMA lenses prepared in Examples 1 to 3 were subjected to performance tests. Through rigorous experiments, the experimental results are as follows:

[0078] The PMMA lens prepared in Example 2 is superior to the traditional PMMA lens in terms of anti-fog and dust-proof, environmental protection, sustainability and production cost.

[0079] The beneficial effects of the present invention are:

[0080] The anti-fog and dust-proof PMMA lens material and preparation method thereof can effectively improve the anti-fog and dust-proof functions of the PMMA lens by using 80%-99% PMMA materials and 1%-20% anti-fog and dust-proof active agents, can greatly broaden the application of PMMA lenses, does not need to be achieved by secondary coating, greatly reduces the use cost, and achieves the advantages of good anti-fog and dust-proof effects.

[0081] The anti-fog and dust-proof PMMA lens material and preparation method thereof, by adopting the PMMA lens prepared by the preparation method, can effectively reduce the PMMA lens preparation process, can greatly reduce the preparation cost of the PMMA lens, can effectively reduce the impact on the environment, greatly improve the environmental protection and sustainability of the preparation, achieve the advantages of low production cost and good environmental protection effect, and solve the problem that the existing lens material PMMA is not anti-fog and dust-proof, which seriously limits its application scenarios.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PMMA lens material that is anti-fog and dust-proof, characterized in that: The invention comprises the following raw materials in proportion by weight: 80%-99% PMMA-like materials and 1%-20% anti-fog and anti-dust active agents.

2. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The PMMA-based material is PMMA resin.

3. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The anti-fog and anti-dust active agent comprises the following raw materials in proportion by weight: 14% isopropyl orthotitanate, 30% ethanol, 30% isopropyl alcohol, 7% glacial acetic acid, 16% water and 3% concentrated hydrochloric acid.

4. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The anti-fog and anti-dust active agent comprises the following preparation steps: A1. Mix 14% isopropyl orthotitanate, 15% ethanol, 15% isopropyl alcohol and 7% glacial acetic acid, and stir to obtain solution A. A2, mix the remaining 15% ethanol, 15% isopropanol, 16% water and 3% concentrated hydrochloric acid, and mix thoroughly to obtain solution B; A3. While stirring, slowly add solution B into solution A to cause a hydrolysis reaction to obtain a glass antifogging agent containing nano-sized TiO2 particles.

5. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 80% of PMMA material and 20% of anti-fog and anti-dust active agent.

6. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 90% of PMMA material and 10% of anti-fog and anti-dust active agent.

7. The anti-fog and dust-proof PMMA lens material according to claim 1, characterized in that: The invention comprises the following raw materials in proportion by weight: 99% of PMMA material and 1% of anti-fog and anti-dust active agent.

8. A method for preparing an anti-fog and dust-proof PMMA lens, comprising: The following steps are involved: S1. Raw material preparation: 80%-99% PMMA materials and 1%-20% anti-fog and anti-dust active agents are taken, prepared and weighed respectively, and the weighed materials are used for later use; S2, preparing a lens substrate: taking the raw materials in S1 and putting them into a reactor for mixing, reacting them within a certain temperature range, and after the reaction is completed, obtaining a material, cooling the material to 50-60° C.; adding the cooled material into an extruder for extrusion, controlling the barrel temperature and the screw temperature within an appropriate range, and after calendering and curing steps, performing trimming, cleaning and drying to obtain a lens substrate; S3, vacuum evaporation coating: the obtained lens substrate is placed in a high vacuum coating machine for uniform rotation, and evacuated to a certain vacuum degree. When the vacuum degree reaches the requirement, the nano material is evenly bombarded by an electron gun to make it reach the melting point of the material and volatilize the coating to form a nano film; on the nano film, an electron gun is used to volatilize the nano anti-fog coating material to form an anti-fog layer; then, the thickness of the low refractive index layer, the high refractive index layer and the anti-fog layer is controlled according to the needs; S4. Post-processing of lenses: Conduct necessary inspections and tests on the coated lenses to ensure that their performance meets the design requirements.

9. The method for preparing a fog and dust proof PMMA lens according to claim 8, characterized in that: The reaction temperature of the reactor in S2 is 120-140°C, the reaction time of the reactor in S2 is 60-70 minutes, the temperature of the barrel in S2 is 130-160°C, and the temperature of the screw in S2 is 105°C.

10. The method for preparing a fog and dust proof PMMA lens according to claim 8, characterized in that: The vacuum degree of the S3 medium and high vacuum coating machine is 0.5-2×10^-2Pa, the thickness of the low refractive index layer in S3 is 50-100nm, the thickness of the high refractive index layer in S3 is 15-40nm, and the thickness of the anti-fog layer in S3 is 10-30nm.