A blue light blocking polycarbonate-based resin composition for lenses and preparation method thereof

Abstract

The invention belongs to the field of optical polymer materials, and specifically relates to a blue light blocking polycarbonate-based resin composition for lenses and a preparation method thereof. The composition comprises the following raw materials in parts by weight: 70-80 parts of polycarbonate, 10-20 parts of polyamide, 3-6 parts of blue light blocking additives, 0.5-2 parts of compatibilizers, 0.2-1 parts of antioxidants, and 0.1-0.3 parts of lubricants. The blue light blocking polycarbonate-based resin composition granules for lenses are prepared through the steps of mixing-extrusion-traction-cooling-granulation. The composition can effectively solve the problems in the prior art that polycarbonate lenses are fragile during use, and conventional blue light absorbers have poor dispersibility, poor compatibility, and are easy to migrate and precipitate, affecting the service life of the products.

Description

Technical Field

[0001] The invention belongs to the field of optical materials, and in particular relates to a blue light blocking polycarbonate-based resin composition for lenses and a preparation method thereof. Background Art

[0002] Blue light is widely used in various electronic products as the background light source of liquid crystal displays. As people come into contact with electronic products, the chances of being exposed to blue light increase dramatically. The damage caused by blue light to the human body, especially the eyes, has gradually attracted everyone's attention. Short-wave blue light (400nm-480nm) (including UV light) has relatively high energy, which can increase the amount of toxins in the macula of the eye, seriously threatening our health.

[0003] Polycarbonate has a wide range of uses in various fields of the national economy, such as construction, electronics, automobiles, and medical treatment, due to its good transparency, excellent thermal stability, creep resistance, cold resistance, and electrical insulation. Polycarbonate has become the main material for manufacturing lenses due to its excellent mechanical and optical properties. However, lenses are generally thin and polycarbonate is generally brittle due to its structural problems. Once a gap appears, it is very easy to break. As one of the five general-purpose plastics, polyamide (nylon) has excellent dimensional stability and low temperature resistance, as well as excellent elastic memory effect and resistance to cracking during application.

[0004] In addition, the commonly used anti-blue light method is to add small molecules with anti-blue light functional structures. In actual use, most of the resulting lenses can have a certain blue light absorption function, but with the subsequent hydration treatment, the original light yellow lenses gradually fade and finally fade to colorless. This is because small molecule additives have compatibility and dispersibility problems, and ultimately have migration.

[0005] Through modification, polycarbonate and polyamide are complemented with excellent properties, and by adding suitable compatibilizers, a composite material with excellent performance is prepared. At the same time, the composition is given excellent anti-blue light performance. This work is of great significance. Summary of the invention

[0006] The purpose of the present invention is to provide a blue light blocking polycarbonate-based resin composition for lenses and a preparation method thereof, in order to solve the problems in the prior art that polycarbonate lenses are fragile during use, and conventional blue light absorbers have poor dispersibility, poor compatibility, and are easy to migrate and precipitate, affecting the service life of the product. The composition has excellent optical and mechanical properties.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0009] Polycarbonate 70-80 parts;

[0010] Polyamide 10-20 parts;

[0011] 3-6 parts of blue light protection agent;

[0012] Compatibilizer 0.5-2 parts;

[0013] Antioxidant 0.2-1 part;

[0014] Lubricant 0.1-0.3 parts.

[0015] Preferably, the polyamide is polyamide 66, polyamide 610 or polyamide 1010.

[0016] Preferably, the compatibilizer is PE-g-GMA.

[0017] Preferably, the antioxidant is a mixture of hindered phenol and phosphite antioxidants.

[0018] Preferably, the lubricant is pentaerythritol stearate.

[0019] Preferably, the method for preparing the anti-blue light auxiliary agent comprises the following steps:

[0020] (1) N-vinyl carbazole is dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and a photoinitiator are dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring is turned on to obtain solution B; solution A is dropped into solution B, and a UV light source is added to irradiate the glass reactor, and the UV irradiation is performed for 15-60 minutes with an energy of 200-600 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0021] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0022] The amount of the photoinitiator is 0-3wt% of the total mass of the reactants;

[0023] (2) The intermediate product I obtained in step (1), a photoinitiator, and phenyl (3-vinylphenyl) ketone are dissolved in dichloromethane and irradiated with UV light for 15-60 min at an energy of 200-600 J / cm 2 ; Then distill under reduced pressure and dry in vacuum to obtain the target product II;

[0024] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is 0.1 mol: 0.12 mol: 500 mL;

[0025] The amount of the photoinitiator B is 0-2 wt % of the total mass of the reactants.

[0026] Preferably, the photoinitiator is 184, 1173, TPO, 2959 or EDAB.

[0027] Preferably, the vacuum drying temperature is 80° C. and the time is 4 hours.

[0028] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0029] S1: First, the polycarbonate and polyamide are dried at 100-120°C for 6-8h;

[0030] S2: Then, the dried polycarbonate, polyamide, anti-blue light additive, compatibilizer, antioxidant, and lubricant raw materials are added into the mixer according to the weight ratio, and mixed and stirred at a temperature of 60° C. and a rotation speed of 80-100 rpm for 2-3 hours to obtain a mixed raw material;

[0031] S3: Finally, the mixed raw materials in S2 are placed in a twin-screw extruder, and melt-blended, extruded, pulled, cooled, and pelletized at a temperature of 220-240° C. in each zone and a rotation speed of 200-250 rpm to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0032] The preparation process of the anti-blue light auxiliary agent in the present invention is as follows:

[0033]

[0034] Beneficial effects of the present invention:

[0035] (1) The present invention provides a blue light blocking polycarbonate-based resin composition for lenses. In the formulation system, by adding a polyamide resin and limiting its amount, the stress cracking resistance and toughness of the composite material are significantly improved.

[0036] (2) The present invention provides a blue light blocking polycarbonate-based resin composition for lenses, wherein the formula system contains a self-made blue light blocking agent; first, one end of the molecular structure contains a carbazole structure, which has excellent blue light absorption performance; the other end is a benzophenone structure, which has excellent ultraviolet absorption performance; second, the self-made blue light blocking agent has aromatic ring structures at both ends and a long-chain alkane structure in the middle, which has "similar dissolution" properties with the benzene rings in polycarbonate and the fatty chains in polyamide, has excellent compatibility and is not easy to precipitate; third, the long-chain alkane structure (PE-like structure) in the middle of the self-made blue light blocking agent also has excellent compatibility with PE-g-GMA (compatible with the main resin and the compatibilizer), which helps to disperse it in the main resin while reducing the use of the compatibilizer, thereby improving the volume expansion effect. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the examples. However, it should be understood that the following examples are only illustrative of the embodiments of the present invention, and are not intended to limit the scope of the present invention.

[0038] The polycarbonate resin described in the following examples of the present invention is of model LXW-1, produced by Luxi Chemical Group Co., Ltd.

[0039] The polyamide 1010 resin described in the following embodiments of the present invention is model 11, produced by Shanghai Celluloid Factory.

[0040] The polyamide 610 resin model Terra HS18-GF30 described in the following embodiments of the present invention is produced by Evonik, Germany.

[0041] The polyamide 66 resin described in the following embodiments of the present invention is of model M1013I, produced by Jiangsu Ruimeifu Industrial Co., Ltd.

[0042] The compatibilizer described in the following examples of the present invention is PE-g-GMA, model KY-3C, produced by Guangzhou Huadu Keyuan Enterprise Co., Ltd.

[0043] The hindered phenol antioxidant described in the following examples of the present invention is antioxidant 1076.

[0044] The phosphite antioxidant described in the following examples of the present invention is antioxidant 168.

[0045] The lubricant described in the following examples of the present invention is pentaerythritol stearate.

[0046] Embodiment 1:

[0047] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0048] Polycarbonate 75 parts;

[0049] Polyamide 1010 15 parts;

[0050] 5 parts of blue light protection agent;

[0051] 1 part of compatibilizer;

[0052] 0.3 parts of hindered phenol antioxidant;

[0053] 0.2 parts of phosphite antioxidant;

[0054] 0.2 parts of lubricant.

[0055] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0056] S1: Dry polycarbonate and polyamide 1010 at 110°C for 7h;

[0057] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant, and lubricant raw materials into a mixer according to weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 90 rpm for 2 hours to obtain a mixed raw material;

[0058] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 225°C, 230°C, 235°C, 240°C, 240°C, 235°C and a rotation speed of 220rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0059] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0060] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 184 were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor for 25 minutes with an energy of 200 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0061] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0062] The amount of the photoinitiator 184 is 2 wt% of the total mass of the reactants;

[0063] Its infrared data are as follows: 1637cm -1、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0064] (2) The intermediate product I, photoinitiator 184, and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV light for 20 min at an energy of 200 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0065] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0066] The amount of the photoinitiator 184 is 1.5wt% of the total mass of the reactants;

[0067] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0068] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2 -); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0069] Embodiment 2:

[0070] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0071] Polycarbonate 75 parts;

[0072] Polyamide 1010 10 parts;

[0073] 4 parts of anti-blue light additive;

[0074] 0.5 parts of compatibilizer;

[0075] 0.6 parts of hindered phenol antioxidant;

[0076] 0.4 parts of phosphite antioxidant;

[0077] Lubricant 0.1 parts.

[0078] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0079] S1: drying polycarbonate and polyamide 1010 at 100°C for 8h;

[0080] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant, and lubricant raw materials into a mixer according to weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 90 rpm for 3 hours to obtain a mixed raw material;

[0081] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35 mm and an aspect ratio of 20. The temperatures in each zone are 220°C, 230°C, 230°C, 240°C, 240°C, 235°C, 235°C, and a rotation speed of 200 rpm for melt blending, extrusion, pulling, cooling, and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0082] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0083] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 1173 were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor for 30 minutes at an energy of 200 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0084] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0085] The amount of the photoinitiator 1173 is 2 wt% of the total mass of the reactants;

[0086] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0087] (2) The intermediate product I, photoinitiator 1173, and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV light for 30 min at an energy of 200 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0088] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0089] The amount of the photoinitiator 1173 is 1wt% of the total mass of the reactants;

[0090] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0091] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2 -); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH2 -).

[0092] Embodiment 3:

[0093] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0094] Polycarbonate 75 parts;

[0095] Polyamide 1010 20 parts;

[0096] 6 parts of blue light protection agent;

[0097] 2 parts of compatibilizer;

[0098] Hindered phenol antioxidant 0.1 part;

[0099] 0.1 part of phosphite antioxidant;

[0100] 0.3 parts of lubricant.

[0101] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0102] S1: drying polycarbonate and polyamide at 120°C for 6h;

[0103] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant, and lubricant raw materials into a mixer according to weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 80 rpm for 3 hours to obtain a mixed raw material;

[0104] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35 mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 220°C, 225°C, 230°C, 235°C, 240°C, 230°C and a rotation speed of 250 rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0105] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0106] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol was dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor, and the UV irradiation was performed for 60 minutes with an energy of 200 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0107] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0108] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0109] (2) The intermediate product I, the photoinitiator EDAB, and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV for 20 min at an energy of 200 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0110] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0111] The amount of the photoinitiator EDAB is 2wt% of the total mass of the reactants;

[0112] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0113] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2-); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0114] Embodiment 4:

[0115] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0116] Polycarbonate 70 parts;

[0117] Polyamide 1010 15 parts;

[0118] 6 parts of blue light protection agent;

[0119] 1.5 parts of compatibilizer;

[0120] 0.3 parts of hindered phenol antioxidant;

[0121] 0.2 parts of phosphite antioxidant;

[0122] 0.2 parts of lubricant.

[0123] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0124] S1: drying polycarbonate and polyamide at 100°C for 6h;

[0125] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant and lubricant raw materials into a mixer according to the weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 100 rpm for 2 hours to obtain a mixed raw material;

[0126] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 225°C, 225°C, 230°C, 235°C, 240°C, 235°C and a rotation speed of 220rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0127] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0128] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 2959 were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor, and the UV irradiation was performed for 40 minutes with an energy of 200 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0129] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0130] The amount of the photoinitiator 2959 is 1wt% of the total mass of the reactants;

[0131] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0132] (2) The intermediate product I and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV for 60 min at an energy of 200 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0133] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0134] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0135] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2-); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0136] Embodiment 5:

[0137] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0138] Polycarbonate 80 parts;

[0139] Polyamide 1010 15 parts;

[0140] 3 parts of blue light protection agent;

[0141] Compatibilizer 0.8 parts;

[0142] 0.5 parts of hindered phenol antioxidant;

[0143] 0.3 parts of phosphite antioxidant;

[0144] 0.2 parts of lubricant.

[0145] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0146] S1: drying polycarbonate and polyamide at 120°C for 8h;

[0147] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant and lubricant raw materials into a mixer according to the weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 100 rpm for 3 hours to obtain a mixed raw material;

[0148] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 225°C, 230°C, 240°C, 240°C, 240°C, 235°C and a rotation speed of 220rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0149] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0150] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator TPO were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor, and the UV irradiation was performed for 15 minutes with an energy of 400 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0151] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0152] The amount of the photoinitiator TPO is 1wt% of the total mass of the reactants;

[0153] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0154] (2) The intermediate product I and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV for 60 min at an energy of 400 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0155] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0156] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0157] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2-); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0158] Embodiment 6:

[0159] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0160] Polycarbonate 75 parts;

[0161] Polyamide 610 15 parts;

[0162] 5 parts of blue light protection agent;

[0163] 1 part of compatibilizer;

[0164] 0.3 parts of hindered phenol antioxidant;

[0165] 0.2 parts of lubricant.

[0166] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0167] S1: drying polycarbonate and polyamide at 110°C for 7h;

[0168] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant, and lubricant raw materials into a mixer according to weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 90 rpm for 2 hours to obtain a mixed raw material;

[0169] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 225°C, 230°C, 235°C, 240°C, 240°C, 235°C and a rotation speed of 220rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0170] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0171] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 184 were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor for 20 minutes at an energy of 400 J / cm 2 ; Distill under reduced pressure to obtain intermediate product I;

[0172] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0173] The amount of the photoinitiator 184 is 3 wt% of the total mass of the reactants;

[0174] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0175] (2) The intermediate product I, the photoinitiator TPO, and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV light for 15 min at an energy of 400 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0176] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0177] The amount of the photoinitiator TPO is 0.5wt% of the total mass of the reactants;

[0178] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0179] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH 2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH2 -); 2.56 (4H, -CH 2 -); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0180] Embodiment 7:

[0181] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0182] Polycarbonate 75 parts;

[0183] Polyamide 66 15 parts;

[0184] 5 parts of blue light protection agent;

[0185] 1 part of compatibilizer;

[0186] 0.3 parts of hindered phenol antioxidant;

[0187] 0.2 parts of phosphite antioxidant;

[0188] 0.2 parts of lubricant.

[0189] A method for preparing a blue light blocking polycarbonate-based resin composition for lenses comprises the following steps:

[0190] S1: drying polycarbonate and polyamide at 110°C for 7h;

[0191] S2: Add the dried polycarbonate, polyamide, blue light protection agent, compatibilizer, antioxidant, and lubricant raw materials into a mixer according to weight ratio, mix and stir at a temperature of 60° C. and a rotation speed of 90 rpm for 2 hours to obtain a mixed raw material;

[0192] S3: Place the mixed raw materials in S2 in a twin-screw extruder with a screw diameter of φ=35mm and an aspect ratio of 20. The temperatures of each zone are 220°C, 225°C, 230°C, 235°C, 240°C, 240°C, 235°C and a rotation speed of 220rpm for melt blending, extrusion, pulling, cooling and pelletizing to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

[0193] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0194] (1) N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 184 were dissolved in ethyl acetate B and placed in a glass reactor to obtain solution B; solution A was dropped into solution B, magnetic stirring was started, and a UV light source was added to irradiate the glass reactor for 20 minutes at an energy of 400 J / cm2 ; Distill under reduced pressure to obtain intermediate product I;

[0195] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.1 mol: 200 mL: 0.1 mol: 500 mL;

[0196] The amount of the photoinitiator 184 is 2.5wt% of the total mass of the reactants;

[0197] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH exists.

[0198] (2) The intermediate product I, photoinitiator 184, and phenyl (3-vinylphenyl) ketone were dissolved in dichloromethane and irradiated with UV light for 40 min at an energy of 400 J / cm 2 ; Distill under reduced pressure and dry under vacuum at 80°C for 4 h to obtain the target product II;

[0199] The usage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is: 0.1 mol: 0.12 mol: 500 mL;

[0200] The amount of the photoinitiator 184 is 0.5wt% of the total mass of the reactants;

[0201] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1680cm -1 、1582cm -1 :-C=O exists; 1618cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0202] Its nuclear magnetic hydrogen spectrum data are as follows: 1 H NMR (400 MHz, CDCl 3 ,δppm):7.2-8.5(17H, benzene ring);3.04(2H, -CH2 -); 2.68 (2H, -CH 2 -; 2.25 (4H, -CH 2 -); 2.56 (4H, -CH 2 -); 1.56 (4H, -CH 2 -); 1.42 (4H, -CH 2 -).

[0203] The blue light polycarbonate-based resin compositions of Comparative Examples 1-6 are compared with Example 1:

[0204] Comparative Example 1

[0205] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0206] Polycarbonate 90 parts;

[0207] 5 parts of blue light protection agent;

[0208] 0.3 parts of hindered phenol antioxidant;

[0209] 0.2 parts of phosphite antioxidant;

[0210] 0.2 parts of lubricant.

[0211] The preparation method of the above-mentioned blue light blocking auxiliary agent is the same as that in specific embodiment 1.

[0212] Comparative Example 2

[0213] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0214] Polycarbonate 75 parts;

[0215] Polyamide 1010 15 parts;

[0216] 1 part of compatibilizer;

[0217] 0.3 parts of hindered phenol antioxidant;

[0218] 0.2 parts of phosphite antioxidant;

[0219] 0.2 parts of lubricant.

[0220] Comparative Example 3

[0221] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0222] Polycarbonate 75 parts;

[0223] Polyamide 1010 15 parts;

[0224] 6 parts of compatibilizer;

[0225] 0.3 parts of hindered phenol antioxidant;

[0226] 0.2 parts of phosphite antioxidant;

[0227] 0.2 parts of lubricant.

[0228] Comparative Example 4

[0229] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0230] Polycarbonate 75 parts;

[0231] Polyamide 1010 15 parts;

[0232] 5 parts of blue light protection agent;

[0233] 0.3 parts of hindered phenol antioxidant;

[0234] 0.2 parts of phosphite antioxidant;

[0235] 0.2 parts of lubricant.

[0236] The preparation method of the above-mentioned blue light blocking auxiliary agent is the same as that in specific embodiment 1.

[0237] Comparative Example 5

[0238] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0239] Polycarbonate 75 parts;

[0240] Polyamide 1010 15 parts;

[0241] 5 parts of blue light protection agent;

[0242] 1 part of compatibilizer;

[0243] 0.3 parts of hindered phenol antioxidant;

[0244] 0.2 parts of phosphite antioxidant;

[0245] 0.2 parts of lubricant.

[0246] The preparation method of the above-mentioned blue light protection auxiliary agent comprises the following steps:

[0247] N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and photoinitiator 184 were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was turned on to obtain solution B; solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor for 25 minutes with an energy of 200 J / cm2 ; Distill under reduced pressure to obtain the target product;

[0248] The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is: 0.22 mol: 200 mL: 0.1 mol: 500 mL;

[0249] The amount of the photoinitiator 184 is 2 wt% of the total mass of the reactants;

[0250] Its infrared data are as follows: 1637cm -1 、1480cm -1 : benzene ring exists; 1330cm -1 :-CN-exists; 1216cm -1 、746cm -1 : benzene ring -CH exists; 1645cm -1 :-C=C- disappears; 2556cm -1 :-SH disappears.

[0251] Comparative Example 6

[0252] A blue light blocking polycarbonate-based resin composition for lenses, comprising the following raw materials in parts by weight:

[0253] Polycarbonate 75 parts;

[0254] Polyamide 1010 15 parts;

[0255] 5 parts of blue light protection agent 2,2-methylenebis[6-(benzotriazole-2-yl)-4-tert-octylphenol];

[0256] 1 part of compatibilizer;

[0257] 0.3 parts of hindered phenol antioxidant;

[0258] 0.2 parts of phosphite antioxidant;

[0259] 0.2 parts of lubricant.

[0260] The preparation method of the blue light blocking polycarbonate-based resin composition of the above-mentioned comparative examples 1-6 is the same as that of specific example 1.

[0261] The blue light blocking polycarbonate-based resin compositions prepared in the above Examples 1-7 and Comparative Examples 1-6 were injection molded, and the injection molding parameters were as follows:

[0262] The injection molding process parameters were set as follows: the temperatures of the front, middle and rear sections were set to 240, 265 and 280°C respectively, the mold temperature was set to 80°C, the injection pressure was set to 110 MPa, the injection time was 15s, and the cooling was 25s. The pellets were injection molded to produce a 2mm thick blue light blocking polycarbonate-based sheet for lenses.

[0263] The physical properties of the blue light blocking polycarbonate-based panels prepared in Examples 1-7 and Comparative Examples 1-6 of the present invention were measured respectively, including blue light absorption effect, UV absorption effect, light transmittance, haze, tensile strength, elongation at break, migration, etc. The results are shown in Table 1.

[0264] Table 1 Physical test performance of each embodiment

[0265]

[0266] From Examples 1-7 of the present invention and Comparative Example 1, it can be observed that the addition of polyamide 1010 effectively improves the toughness and stress cracking performance of polycarbonate resin; from Example 1 of the present invention and Comparative Examples 2-4, it can be observed that the self-made anti-blue light auxiliary agent of the present invention has excellent anti-blue light effect and UV resistance, and also has a certain volume expansion effect, which can effectively reduce the amount of compatibilizer; from Example 1 and Comparative Example 5, it can be observed that the self-made anti-blue light auxiliary agent of the present invention has excellent UV absorption performance. In summary, the anti-blue light polycarbonate-based composition for lenses of the present invention has excellent optical properties and mechanical properties.

[0267] The test method is as follows:

[0268] (1) Blue light transmittance: The polycarbonate substrate is placed in a UV-visible light absorption test, where the scanning range is 380-455nm and the scanning interval is 1nm. UV-visible light absorption expression method: The average transmittance value is used to express the absorption effect. The lower the transmittance, the better the absorption effect.

[0269] (2) UV transmittance: The polycarbonate substrate is placed in a UV-visible light absorption test, where the scanning range is 200-400nm and the scanning interval is 1nm. The UV-visible light absorption is expressed as the average transmittance value. The lower the transmittance, the better the absorption effect.

[0270] (3) Transmittance and haze: The test was carried out according to the method described in JIS K7105-1981.

[0271] (4) Elongation at break and tensile strength: Tested according to GB / T 1040-2018 Plastic Tensile Test Method, with a test speed of 50 mm / min.

[0272] (5) Notched impact strength: tested in accordance with GB / T1843-2008, sample size 80 mm × 10 mm × 2 mm.

[0273] (6) Migration resistance: The polycarbonate substrate was soaked in acetonitrile for 24 hours, and the soaked liquid was taken to measure the UV-visible spectrum, with the wavelength set to the range of 200-500nm. The mobility is expressed as follows: 5 is the lowest molar absorption coefficient, that is, the best mobility; 1 is the largest molar absorption coefficient, that is, the worst mobility.

[0274] Note: Based on the ideal embodiment of the present invention, through the above description, relevant staff can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A blue light blocking polycarbonate-based resin composition for lenses, characterized in that: Contains the following raw materials by weight: Polycarbonate 70-80 parts; Polyamide 10-20 parts; 3-6 parts of blue light protection agent; 0.5-2 parts of a compatibilizer, wherein the compatibilizer is PE-g-GMA; Antioxidant 0.2-1 part; Lubricant 0.1-0.3 parts; The preparation method of the anti-blue light auxiliary agent comprises the following steps: N-vinyl carbazole was dissolved in ethyl acetate A and placed in a constant pressure dropping funnel to obtain solution A; 1,6-hexanedithiol and a photoinitiator were dissolved in ethyl acetate B and placed in a glass reactor, and magnetic stirring was started to obtain solution B; Solution A was dropped into solution B, and a UV light source was added to irradiate the glass reactor. The UV irradiation time was 15-60 min, and the energy was 200-600 J / cm 2 ; After distillation under reduced pressure, the intermediate product I is obtained; The dosage ratio of N-vinyl carbazole, ethyl acetate A, 1,6-hexanedithiol, and ethyl acetate B is 0.1 mol: 200 mL: 0.1 mol: 500 mL; the dosage of the photoinitiator is 0-3 wt% of the total mass of the reactants; The intermediate product I obtained in step (1), the photoinitiator, and phenyl (3-vinylphenyl) ketone are dissolved in dichloromethane and irradiated with UV light for 15-60 min at an energy of 200-600 J / cm 2 ; Then distill under reduced pressure and dry in vacuum to obtain the target product II; The dosage ratio of the intermediate product I, phenyl (3-vinylphenyl) ketone and dichloromethane is 0.1 mol: 0.12 mol: 500 mL; the dosage of the photoinitiator is 0-2 wt % of the total mass of the reactants; The amount of the photoinitiator used in step (1) and step (2) is not 0 at the same time.

2. The blue light blocking polycarbonate-based resin composition for lenses according to claim 1, characterized in that: The polyamide is polyamide 66, polyamide 610 or polyamide 1010.

3. The blue light blocking polycarbonate-based resin composition for lenses according to claim 1, characterized in that: The antioxidant is a mixture of hindered phenols and phosphites.

4. The blue light blocking polycarbonate-based resin composition for lenses according to claim 1, characterized in that: The lubricant is pentaerythritol stearate.

5. The blue light blocking polycarbonate-based resin composition for lenses according to claim 1, characterized in that: The photoinitiator is 184, 1173, TPO, 2959 or EDAB.

6. The blue light blocking polycarbonate-based resin composition for lenses according to claim 1, characterized in that: The vacuum drying temperature was 80°C and the time was 4 h.

7. The method for preparing the blue light blocking polycarbonate-based resin composition for lenses according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: First, the polycarbonate and polyamide are dried at 100-120°C for 6-8h; S2: Then, the dried polycarbonate, polyamide, anti-blue light additive, compatibilizer, antioxidant, and lubricant raw materials are added into the mixer according to the weight ratio, and the mixture is mixed and stirred at a temperature of 60° C. and a rotation speed of 80-100 rpm for 2-3 hours to obtain a mixed raw material; S3: Finally, the mixed raw materials in S2 are placed in a twin-screw extruder, and melt-blended, extruded, pulled, cooled, and pelletized at a temperature of 220-240° C. in each zone and a rotation speed of 200-250 rpm to obtain blue light blocking polycarbonate-based resin composition pellets for lenses.

8. Use of the polycarbonate-based resin composition prepared according to the method of claim 7 for preparing blue light blocking materials.

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