CN109782386B - Light guide plate and preparation method thereof - Google Patents
Light guide plate and preparation method thereof Download PDFInfo
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- CN109782386B CN109782386B CN201910094691.9A CN201910094691A CN109782386B CN 109782386 B CN109782386 B CN 109782386B CN 201910094691 A CN201910094691 A CN 201910094691A CN 109782386 B CN109782386 B CN 109782386B
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Abstract
The invention discloses a light guide plate and a preparation method thereof, the light guide plate comprises a light-emitting surface, a back surface and a side surface, the light-emitting surface and the back surface are oppositely arranged, the side surface is connected with the light-emitting surface and the back surface, at least one side surface is provided with a light-entering layer, the part of the light guide plate except the light-entering layer is a PS layer, and the light-entering layer is made of the following components in parts by weight: the light guide plate is prepared by mixing the components, and the light guide plate is strong in stability and good in light transmittance and can reduce light loss.
Description
Technical Field
The invention belongs to the technical field of light guide plates, and particularly relates to a light guide plate and a preparation method thereof.
Background
The light guide plate utilizes the residence of the light that the inferior gram force panel of optics level absorbs the light that sends out from the lamp on the inferior gram force panel surface of optics level, and when light struck each leaded light point, the reverberation can be toward each angle diffusion, then destroys the reflection condition and jets out by the light guide plate front. The light guide plate can uniformly emit light through various light guide points with different densities and sizes.
The design principle of the light plate is derived from a liquid crystal display screen of a notebook computer, and the light plate is a high-tech product for converting a linear light source into a surface light source. Optical grade acrylic (PMMA)/PC is used as a base material, and the backlight module technology of an LCD display screen and a notebook computer is applied, so that the light of the light guide plate is refracted into a surface light source uniform light state to manufacture and form the LED backlight module through the high light transmission rate of the light guide points and the calculation of the computer on the light guide points. The product is manufactured by combining the spectral analysis principle with the digital UV printing technology under the environment conditions of constant temperature, constant humidity and no dust. The LED lamp has the advantages of being ultrathin, ultra-bright, uniform in light guide, energy-saving, environment-friendly, free of dark space, durable, not prone to yellowing, simple and fast to install and maintain and the like.
The light guide plate is mainly formed by injection molding and sheet cutting molding, and the used materials mainly include optical grade materials such as PC (polycarbonate), PMMA (abbreviation of polymethyl methacrylate, commonly known as organic glass), PS (polystyrene plastic) and glass, and the used materials are single, either PC, PMMA, PS or glass, regardless of injection molding or sheet cutting molding. Although both PMMA and PC have the advantages of high transmittance, high temperature resistance and the like, PMMA and PC are higher in price than PS and glass, and the PMMA and PC are used by enterprises for a long time, so that the production cost is increased, and the long-term operation of the enterprises is not facilitated.
When the light guide plate is used, when light rays irradiate each light guide point, reflected light can be diffused towards each angle, then the reflection condition is destroyed, the reflected light is emitted from the front surface of the light guide plate, and the light guide plate can uniformly emit light through the light guide points with various densities and sizes. And traditional light guide plate is because there is the light guide plate thickness to distribute inhomogeneously, the material has the dispersibility in the light guide plate big, and the texture is inhomogeneous to there is toughness relatively poor in the use, and the damage rate is higher, and current light guide plate can not make light produce refraction, reflection and scattering well and play the effect of soft light, and in long-term use, and light permeability variation makes the light energy loss improve, the even light and the printing opacity problem that can not be fine.
Disclosure of Invention
In view of the above technical problems, the present invention provides a light guide plate and a method for manufacturing the same.
The technical scheme of the invention is as follows: the light guide plate comprises a light emitting surface, a back surface and a plurality of side surfaces, wherein the light emitting surface and the back surface are arranged oppositely, the back surface is provided with light guide points, the side surfaces are connected with the light emitting surface and the back surface, at least one side surface is provided with a light inlet layer, the part of the light guide plate, except the light inlet layer, is a PS layer, and the light inlet layer is made of the following components in parts by weight: 25-30 parts of polymethyl acrylate, 2-8 parts of microporous hydroxyapatite, 10-13 parts of n-propyl silicate, 6-12 parts of cellulose triacetate, 25-35 parts of acrylonitrile-butadiene-styrene copolymer, 10-12 parts of superfine active silicon powder, 4-5 parts of dimethyl silicone oil, 8-11 parts of polymethylpentene resin, 10-12 parts of polytetrafluoroethylene, 8-15 parts of octylphenol, 6-13 parts of ethylene bis-stearamide, 5-7 parts of ethylene glycol diether, 4-6 parts of stearate, 8-12 parts of acrylic emulsion, 11-15 parts of polymethylphenylsiloxane, 12-15 parts of thermoplastic polyurethane elastomer, 6-9 parts of calcium hydrophosphate, 5-7 parts of polyethylene glycol, 0.8-1 part of stabilizer and 0.4-0.6 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, introducing dry hot air for oscillation drying treatment for 30-35 min, cooling the dried microporous hydroxyapatite to room temperature, and carrying out ultrafine grinding for 15-20 min by using an air flow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum chamber, introducing mixed liquid for pulse circulation for 2-3 times under the conditions that the vacuum degree is 8-10 KPa and the stirring speed is 150-200 r/min, wherein the circulation time is 10-13 min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 6.5-7.6, then adding stearate, refluxing for 10-13 min, concentrating to 90% of the volume of the original solution, then pouring into a pulsed electric field reactor, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, and simultaneously adding ethylene glycol diether and stabilizer during the conversion of the stirring speed, and carrying out reduced pressure concentration to generate a fluid solution;
s3: pretreating superfine active silica powder and polymethylphenylsiloxane according to the above ratio, and mixing the treated superfine active silica powder with acrylonitrile-butadiene-styrene copolymer and octylphenol at vacuum degree of 10-1～10-3Pa, the rotating speed is 750-800 r/min, mixing and stirring are carried out, the rotating speed is controlled to be 450-500 r/min, then polytetrafluoroethylene is added, and stirring is carried out uniformly; then, raising the temperature to 110 ℃, extruding and granulating the mixture in a molten state by using a double-screw extruder, soaking the granules in an acetic acid solution containing polymethylpentene resin, carrying out suction filtration after 12-20 min, and then drying in a vacuum drying oven for 1-2 h to obtain composite particles;
s4: mixing the fluid solution generated in the step S2 with the composite particles obtained in the step S3, adding a composite antioxidant and cellulose triacetate under the action of an electromagnetic field to uniformly stir the mixed material, drying the mixed material, mixing the dried mixed material with calcium hydrophosphate and a thermoplastic polyurethane elastomer to form a mixed material, melting the mixed material by using an extruder, extruding the extruded material, putting the extruded material into a mixer, increasing the temperature to 360 ℃ at a heating rate of 2-4 ℃/min, adding polyethylene glycol when the temperature reaches 220 ℃, forming the finally obtained product into a sheet through a die, and finally carrying out corona treatment under the conditions that the pulse strength is 1-3 kV and the pulse time is 1-2 mu m to obtain the light guide plate.
Further, the stabilizer is composed of one or more of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate and a hindered amine light stabilizer UV-3853.
further, the compound antioxidant is composed of one or more of 2, 2-methylene bis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, β -octadecyl beta- (4-hydroxy-3, 5-di-tert-butylphenyl) propionate and 2, 4-dihydroxy benzophenone.
Further, the conditions of the pulsed electric field reactor in step S2 are: keeping the temperature at 25-40 ℃ and the pressure at 5-10 MPa, and adjusting the pulse width to 6 mus, the pulse frequency to 5-10 Hz and the pulse electric field intensity to 2-4 kV cm.
Further, the mode of pretreating the ultrafine active silica powder in step S3 is as follows: stirring and dispersing the superfine active silicon micropowder in ethylene glycol through a magnetic bar to prepare the superfine active silicon micropowder with the concentration of 25-80 mg/mL, adding polymethylphenylsiloxane under the conditions of ultrasonic power of 75-90W and frequency of 35-40 KHz, treating for 5-10 min, then performing centrifugal separation and cleaning under a vacuum environment after ultrasonic treatment, cleaning for 1-2 times with practical purified water, adjusting the pH value to 7.5-9.2, and performing gas drying for 15-30 min at the temperature of 80-110 ℃ to obtain the treated superfine active silicon micropowder.
Further, the rotation speed of the extruder in the step S4 is 130rpm to 150rpm, and the zone temperature is: the first section is 150 ℃, the second section is 170 ℃, the third section is 200 ℃, and after extrusion, air blowing cooling is carried out to room temperature through nitrogen with the low temperature of 4-6 ℃.
Further, in step S4, the calcium hydrogen phosphate and the thermoplastic polyurethane elastomer are processed before mixing: ball-milling calcium hydrogen phosphate and the thermoplastic polyurethane elastomer for 10-15 min by a ball mill at the temperature of 65-120 ℃, then putting the ball-milled materials into a high-speed centrifuge at the speed of 500-850 r/min according to 65% of the total amount, stirring for 12-18 min, putting the rest materials under the condition that the external magnetic field intensity is 0.2-0.3T, and stirring for 20-25 min at the temperature of 180 ℃ and the speed of 300r/min to obtain the mixed material of the calcium hydrogen phosphate and the thermoplastic polyurethane elastomer.
Further, adding polymethyl acrylate into an acetone solution to prepare a solution, keeping the pH value of the solution to 7.5-8.5, putting the solution into a water bath at the temperature of 60-70 ℃, and keeping the temperature for 10 min; then, calcining the titanium dioxide at high temperature, continuously blowing with nitrogen gas, performing ultrasonic dispersion treatment on the titanium dioxide after the high-temperature calcination for 15-30 min, and adding the titanium dioxide into deionized water to prepare a suspension; and continuously dropwise adding the titanium dioxide suspension into the polymethyl acrylate solution at the temperature of 85-90 ℃ according to the weight ratio of 1:3 of the polymethyl acrylate solution to the titanium dioxide suspension, and fully stirring for 1-1.5 h to obtain the modified polymethyl acrylate, so that the overall performance of the polymethyl acrylate is improved, and other components can be better and fully mixed.
Further, the light guide plate is a flat plate with a uniform thickness.
Further, the light guide plate is a rectangular plate, and at least one side surface of the rectangular plate is provided with a light inlet layer.
Further, the light guide plate is a circular plate, and a light inlet layer is arranged on the outer peripheral surface of the circular plate.
Further, the light guide plate is a triangular plate, and at least one side surface of the triangular plate is provided with a light inlet layer.
Further, the light guide plate is a wedge-shaped light guide plate having a wedge-shaped cross section.
Furthermore, a light inlet layer is arranged on the thicker side of the light guide plate.
Further, the light emitting surface of the light guide plate is circular or rectangular.
Further, the light guide plate is a light guide plate in which two different materials are closely combined through a process of injection molding, extrusion molding or pasting.
Further, the light guide plate is formed by tightly combining two different materials of the light inlet layer and the part outside the light inlet layer through a double-color injection molding, double-layer co-extrusion or pasting process.
Compared with the prior art, the invention has the beneficial effects that: the light guide plate prepared by the invention has simple preparation process, and by adding the microporous hydroxyapatite and the ultrafine active silica powder to pretreat with other components, the solid particles are promoted to be fully mixed to form a stable light diffusion structure, the combination is tight, the integral mechanical property of the light guide plate is improved, and the light scattering can be uniform; the ethylene bis stearamide cellulose triacetate and the dimethyl silicone oil are added to ensure that all components are uniformly dispersed, so that the formed composition has stable material, strong processability and no microporous structure; the acrylonitrile-butadiene-styrene copolymer, the ethylene glycol diether and the stearate improve the viscosity and the high temperature resistance of the composition; the auxiliary materials are matched to improve the high transmittance of the light guide plate, prevent yellowing and oxidation, reduce light loss, obviously improve the compatibility of the components, improve the filling rate and the dispersibility, have small change of hue and transmittance in long-term use, solve the problems of light homogenizing and light transmitting and have excellent colorless transparency.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 4 of the present invention;
FIG. 5 is a schematic structural view of example 5 of the present invention;
FIG. 6 is a schematic structural view of example 6 of the present invention;
FIG. 7 is a schematic structural view of example 7 of the present invention;
FIG. 8 is a schematic structural view of example 8 of the present invention;
FIG. 9 is a schematic structural view of example 9 of the present invention;
FIG. 10 is a schematic structural view of example 10 of the present invention;
FIG. 11 is a schematic structural view of example 11 of the present invention;
wherein, the light guide plate 1, the light inlet layer 11, the light guide plate 12 are arranged at the parts except the light inlet layer, the back surface 121, the light outlet surface 122, the thick surface 124 and the thin surface 125.
Detailed Description
Example 1
A light guide plate, the light guide plate 1 includes a light-emitting surface 122, a back 121 and a plurality of side surfaces, the light-emitting surface 122 is arranged opposite to the back 121, the back 121 is provided with light guide points, the side surfaces are connected with the light-emitting surface 122 and the back 121, at least one side surface is provided with a light-entering layer (11), a part 12 of the light guide plate except the light-entering layer 11 is a PS layer, and the light-entering layer is made of the following components in parts by weight: 25 parts of polymethyl acrylate, 2 parts of microporous hydroxyapatite, 10 parts of n-propyl silicate, 6 parts of cellulose triacetate, 25 parts of acrylonitrile-butadiene-styrene copolymer, 10 parts of superfine active silicon powder, 4 parts of dimethyl silicone oil, 8-11 parts of polymethylpentene resin, 10 parts of polytetrafluoroethylene, 8 parts of octylphenol, 6-13 parts of ethylene bis-stearamide, 5 parts of ethylene glycol diether, 4 parts of stearate, 8 parts of acrylic emulsion, 11 parts of polymethylphenylsiloxane, 12 parts of thermoplastic polyurethane elastomer, 6 parts of calcium hydrophosphate, 5 parts of polyethylene glycol, 0.8 part of stabilizer and 0.4 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 170 deg.C, microwave radiation frequency at 50W, temperature of introduced hot air at 60 deg.C, and flow rate at 12cm3The treatment time is 30min, and then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding by an airflow mill 15; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, introducing mixed liquor for pulse circulation for 2 times under the conditions that the vacuum degree is 8KPa and the stirring speed is 150r/min, wherein the circulation time is 10min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 6.5, then adding stearate, refluxing for 10min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor under the conditions that: keeping the temperature at 25 ℃ and the pressure at 5MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 5Hz, the pulse electric field intensity to be 2kV · cm, stirring at low speed-high speed-low speed through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and stabilizer 2,2,6, 6-tetramethyl-4-piperidyl stearate during the stirring speed conversion period, and decompressing and concentrating to generate a fluid solution;
s3: pretreating superfine active silica powder and polymethylphenylsiloxane according to the above ratio, and mixing the treated superfine active silica powder with acrylonitrile-butadiene-styrene copolymer and octylphenol at vacuum degree of 10-1Mixing and stirring at Pa and a rotation speed of 750r/min, controlling the rotation speed to 450r/min, adding polytetrafluoroethylene, and stirring uniformly; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 12min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 1h, so as to obtain composite particles;
s4: mixing the fluid solution generated in the step S2 with the composite particles obtained in the step S3, adding 2, 2-methylene bis (4-methyl-6-tert-butylphenol) and cellulose triacetate as composite antioxidants under the action of an electromagnetic field, uniformly stirring the mixture, drying the mixture, forming a mixed material with calcium hydrophosphate and a thermoplastic polyurethane elastomer, extruding the mixed material after melting by using an extruder, wherein the rotating speed of the extruder is 130rpm, and the section temperature is as follows: the first section is 150 ℃, the second section is 170 ℃, the third section is 200 ℃, after extrusion, air-blowing cooling is carried out through nitrogen with the low temperature of 4 ℃ to the room temperature, the extruded materials are put into a mixer, then the temperature rises to 360 ℃ at the heating rate of 2 ℃/min, when the temperature reaches 220 ℃, polyethylene glycol is added, the finally obtained product forms a sheet through a die, and finally corona treatment is carried out under the conditions that the pulse intensity is 1kV and the pulse time is 1 mu m, so that the light guide plate is obtained.
The light guide plate 1 prepared as described above is a flat plate having a uniform thickness, the light guide plate 1 is a rectangular plate, and one side surface of the rectangular plate is provided with a light incident layer 11, as shown in fig. 1.
Example 2
A light guide plate 1 comprises a light emitting surface 122, a back surface 121 and a plurality of side surfaces, wherein the light emitting surface 122 and the back surface 121 are arranged oppositely, the back surface 121 is provided with light guide points, the side surfaces are connected with the light emitting surface 122 and the back surface 121, at least one side surface is provided with a light inlet layer 11, a part 12 of the light guide plate except the light inlet layer 11 is a PS layer, and the light inlet layer is made of the following components in parts by weight: 28 parts of polymethyl acrylate, 5 parts of microporous hydroxyapatite, 12 parts of n-propyl silicate, 10 parts of cellulose triacetate, 30 parts of acrylonitrile-butadiene-styrene copolymer, 11 parts of superfine active silicon powder, 4 parts of dimethyl silicone oil, 9 parts of polymethylpentene resin, 11 parts of polytetrafluoroethylene, 12 parts of octylphenol, 11 parts of ethylene bis-stearamide, 6 parts of ethylene glycol diether, 5 parts of stearate, 10 parts of acrylic emulsion, 13 parts of polymethylphenylsiloxane, 13 parts of thermoplastic polyurethane elastomer, 8 parts of calcium hydrophosphate, 6 parts of polyethylene glycol, 0.9 part of stabilizer and 0.5 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 180 deg.C, microwave radiation frequency at 60W, temperature of introduced hot air at 65 deg.C, and flow rate at 12cm3The treatment time is 33min, and then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding for 18min by an airflow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, stirring at the vacuum degree of 9KPaUnder the condition that the speed is 180r/min, introducing mixed liquor, performing pulse circulation for 2 times, wherein the circulation time is 12min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 7.3, then adding stearate, refluxing for 12min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor under the conditions that: keeping the temperature at 30 ℃ and the pressure at 8MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 7Hz, the pulse electric field intensity to be 3kV · cm, stirring at low speed-high speed-low speed through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and a stabilizer consisting of 2,2,6, 6-tetramethyl-4-piperidyl stearate and zinc ricinoleate with the mass ratio of 1:1 during the stirring speed conversion period, and carrying out reduced pressure concentration to generate a fluid solution;
s3: pretreating superfine active silica powder and polymethylphenylsiloxane according to the above ratio, and mixing the treated superfine active silica powder with acrylonitrile-butadiene-styrene copolymer and octylphenol at vacuum degree of 10-2Mixing and stirring at Pa and a rotating speed of 770r/min, controlling the rotating speed to 470r/min, adding polytetrafluoroethylene, and uniformly stirring; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 15min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 1.5h, so as to obtain composite particles;
s4: mixing the fluid solution generated in the step S2 with the composite particles obtained in the step S3, adding a composite antioxidant and cellulose triacetate under the action of an electromagnetic field, wherein the mass ratio of the composite antioxidant to the cellulose triacetate is 1:0.8, and the composite antioxidant and the cellulose triacetate consist of 2, 2-methylenebis (4-methyl-6-tert-butylphenol) and 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, uniformly stirring the mixture, drying the mixture, mixing the mixture with calcium hydrophosphate and a thermoplastic polyurethane elastomer, melting the mixture by using an extruder, and extruding the mixture, wherein the rotating speed of the extruder is 140rpm, and the zone temperature is as follows: the first section is 150 ℃, the second section is 170 ℃, the third section is 200 ℃, after extrusion, air-blowing cooling is carried out through nitrogen with the low temperature of 5 ℃ to the room temperature, the extruded materials are put into a mixer, then the temperature rises to 360 ℃ at the heating rate of 3 ℃/min, when the temperature reaches 220 ℃, polyethylene glycol is added, the finally obtained product forms a sheet through a die, and finally corona treatment is carried out under the conditions that the pulse intensity is 2kV and the pulse time is 1 mu m, so that the light guide plate is obtained.
The light guide plate 1 prepared as described above has substantially the same structure as in example 1, except that: the light guide plate 1 is a rectangular plate, and light inlet layers 11 are arranged on two side surfaces of the rectangular plate; the two sides are two adjacent sides as shown in fig. 2.
Example 3
The light guide plate device prepared by adopting the material of the embodiment 2 has the same structure as the light guide plate device prepared by adopting the material of the embodiment 1, and is different from the light guide plate device prepared by adopting the material of the embodiment 1 in that the light guide plate 1 is a rectangular plate, and two side surfaces of the rectangular plate are provided with light inlet layers 11; the two sides are two opposite sides as shown in fig. 3.
Example 4
The light guide plate device manufactured using the material of example 2 has substantially the same structure as that of example 1, except that the light guide plate 1 is a rectangular plate having light-entering layers 11 on three sides thereof, as shown in fig. 4.
Example 5
A light guide plate 1 comprises a light-emitting surface 122, a back surface 121 and a plurality of side surfaces, wherein the light-emitting surface 122 is arranged opposite to the back surface 121, the back surface 121 is provided with light guide points, the side surfaces are connected with the light-emitting surface 122 and the back surface 121, at least one side surface is provided with a light-entering layer 11, a part 12 of the light guide plate except the light-entering layer 11 is a PS layer, and the light-entering layer is made of the following components in parts by weight: 30 parts of polymethyl acrylate, 8 parts of microporous hydroxyapatite, 13 parts of n-propyl silicate, 12 parts of cellulose triacetate, 35 parts of acrylonitrile-butadiene-styrene copolymer, 12 parts of superfine active silicon powder, 5 parts of dimethyl silicone oil, 11 parts of polymethylpentene resin, 12 parts of polytetrafluoroethylene, 15 parts of octylphenol, 13 parts of ethylene bis-stearamide, 7 parts of ethylene glycol diether, 6 parts of stearate, 12 parts of acrylic emulsion, 15 parts of polymethylphenylsiloxane, 15 parts of thermoplastic polyurethane elastomer, 9 parts of calcium hydrophosphate, 7 parts of polyethylene glycol, 1 part of stabilizer and 0.6 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 190 deg.C, microwave radiation frequency at 100W, temperature of introduced hot air at 70 deg.C, and flow rate at 12cm3Min, the treatment time is 35min, then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding for 20min by an airflow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, introducing mixed liquor for pulse circulation for 3 times under the conditions that the vacuum degree is 10KPa and the stirring speed is 200r/min, wherein the circulation time is 13min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 7.6, then adding stearate, refluxing for 13min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor under the conditions that: keeping the temperature at 40 ℃ and the pressure at 10MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 10Hz and the pulse electric field intensity to be 4 kV-cm, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and a stabilizer consisting of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate and hindered amine UV-3853 with the mass ratio of 1:1.2:1 during the stirring speed conversion period, and carrying out reduced pressure concentration to generate a fluid solution;
s3: the superfine active silicon powder and the polymethylphenylsiloxane are pretreated according to the proportion,mixing the treated superfine active silica powder with acrylonitrile-butadiene-styrene copolymer and octylphenol in vacuum degree of 10-3Mixing and stirring at Pa and a rotating speed of 800r/min, controlling the rotating speed to 500r/min, adding polytetrafluoroethylene, and stirring uniformly; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 20min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 2h, so as to obtain composite particles;
s4, mixing the fluid solution generated in the step S2 and the composite particles obtained in the step S3, adding a composite antioxidant consisting of 2, 2-methylenebis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid and β - (4-hydroxy-3, 5-di-tert-butylphenyl) propionic acid n-octadecyl ester in a mass ratio of 0.9:0.8:1 and cellulose triacetate under the action of an electromagnetic field to uniformly stir the mixed material, drying the mixed material, forming calcium hydrogen phosphate and a thermoplastic polyurethane elastomer, melting and extruding the mixed material by using an extruder, wherein the rotating speed of the extruder is 150rpm, the section temperature is 150 ℃ in the first section, 170 ℃ in the second section, 200 ℃ in the third section, performing air blowing cooling to room temperature by using nitrogen at a low temperature of 6 ℃ after extrusion, putting the extruded material into a mixer, increasing the temperature to 360 ℃ at a heating rate, adding polyethylene glycol when the temperature reaches 220 ℃, finally obtaining a product, forming a sheet by using a pulse mold, and performing corona treatment for 2 mu kV, and obtaining a light guide plate under the condition of 2 mu kV.
The light guide plate prepared as described above has substantially the same structure as in example 1, except that: the light guide plate 1 is a rectangular plate, and light inlet layers 11 are arranged on four side surfaces of the rectangular plate, as shown in fig. 5;
example 6
The light guide plate 1 prepared as described above was substantially the same in structure as in example 1, except that the material of example 5 was used, except that: the light guide plate 1 is a circular plate, and a light incident layer 11 is provided on the outer circumferential surface of the circular plate, as shown in fig. 6.
Example 7
A light guide plate 1 comprises a light-emitting surface 122, a back surface 121 and a plurality of side surfaces, wherein the light-emitting surface 122 is arranged opposite to the back surface 121, the back surface 121 is provided with light guide points, the side surfaces are connected with the light-emitting surface 122 and the back surface 121, at least one side surface is provided with a light-entering layer 11, a part 12 of the light guide plate except the light-entering layer 11 is a PS layer, and the light-entering layer is made of the following components in parts by weight: 30 parts of polymethyl acrylate, 8 parts of microporous hydroxyapatite, 13 parts of n-propyl silicate, 12 parts of cellulose triacetate, 35 parts of acrylonitrile-butadiene-styrene copolymer, 12 parts of superfine active silicon powder, 5 parts of dimethyl silicone oil, 11 parts of polymethylpentene resin, 12 parts of polytetrafluoroethylene, 15 parts of octylphenol, 13 parts of ethylene bis-stearamide, 7 parts of ethylene glycol diether, 6 parts of stearate, 12 parts of acrylic emulsion, 15 parts of polymethylphenylsiloxane, 15 parts of thermoplastic polyurethane elastomer, 9 parts of calcium hydrophosphate, 7 parts of polyethylene glycol, 1 part of stabilizer and 0.6 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 190 deg.C, microwave radiation frequency at 100W, temperature of introduced hot air at 70 deg.C, and flow rate at 12cm3Min, the treatment time is 35min, then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding for 20min by an airflow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, introducing mixed liquor for pulse circulation for 3 times under the conditions that the vacuum degree is 10KPa and the stirring speed is 200r/min, wherein the circulation time is 13min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 7.6, then adding stearate, refluxing for 13min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor under the conditions that: keeping the temperature at 40 ℃ and the pressure at 10MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 10Hz and the pulse electric field intensity to be 4 kV-cm, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and a stabilizer consisting of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate and hindered amine UV-3853 with the mass ratio of 1:1.2:1 during the stirring speed conversion period, and carrying out reduced pressure concentration to generate a fluid solution;
s3: stirring and dispersing the superfine active silicon powder in ethylene glycol by a magnetic rod according to the proportion to prepare the active silicon powder with the concentration of 80mg/mL, adding polymethylphenylsiloxane under the conditions of 90W of ultrasonic power and 40KHz of frequency for processing for 10min, then carrying out centrifugal separation and cleaning under the vacuum environment after ultrasonic processing, cleaning for 2 times by using purified water for practical use, adjusting the pH value to 9.2, carrying out gas drying for 30min at the temperature of 110 ℃ to obtain the processed superfine active silicon powder, and mixing the processed superfine active silicon powder with acrylonitrile-butadiene-styrene copolymer and octylphenol under the vacuum degree of 10-3Mixing and stirring at Pa and a rotating speed of 800r/min, controlling the rotating speed to 500r/min, adding polytetrafluoroethylene, and stirring uniformly; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 20min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 2h, so as to obtain composite particles;
s4, mixing the fluid solution generated in the step S2 and the composite particles obtained in the step S3, adding a composite antioxidant and cellulose triacetate, wherein the composite antioxidant and the cellulose triacetate are composed of 2, 2-methylenebis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, β -octadecyl beta- (4-hydroxy-3, 5-di-tert-butylphenyl) propionate and 2, 4-dihydroxybenzophenone in a mass ratio of 1:0.8:0.8:0.9, under the action of an electromagnetic field, uniformly stirring the mixed material, after drying, calcium hydrogen phosphate and a thermoplastic polyurethane elastomer are combined to form a mixed material, melting and extruding the mixed material by an extruder at a rotation speed of 150rpm in a section temperature of a first section of 150 ℃, a second section of 170 ℃, a third section of 200 ℃, after extruding, performing air blowing on the extruded material to room temperature by using nitrogen at a low temperature of 6 ℃, adding the extruded material into a mixer, increasing the temperature to a speed of 4 ℃/min, when the temperature reaches 220 ℃, adding a polyethylene glycol pulse process, and finally obtaining a light guide plate under a corona treatment condition of 2 μm to obtain a product.
The light guide plate prepared as described above has substantially the same structure as in example 1, except that: the light guide plate 1 is a triangular plate, and one side surface of the triangular plate is provided with a light inlet layer 11, as shown in fig. 7.
Example 8
The light guide plate prepared as described above was constructed substantially the same as in example 1, except that the material of example 7 was used: the light guide plate 1 is a triangular plate, and two side surfaces of the triangular plate are provided with light inlet layers 11, as shown in fig. 8.
Example 9
The light guide plate 1 prepared as described above was substantially the same in structure as in example 1, except that the material of example 7 was used, except that: the light guide plate 1 is a triangular plate, and three sides of the triangular plate are provided with light inlet layers 11, as shown in fig. 9.
Example 10
A light guide plate 1 comprises a light-emitting surface 122, a back surface 121 and a plurality of side surfaces, wherein the light-emitting surface 122 is arranged opposite to the back surface 121, the back surface 121 is provided with light guide points, the side surfaces are connected with the light-emitting surface 122 and the back surface 121, at least one side surface is provided with a light-entering layer 11, a part 12 of the light guide plate except the light-entering layer 11 is a PS layer, and the light-entering layer is made of the following components in parts by weight: 30 parts of polymethyl acrylate, 8 parts of microporous hydroxyapatite, 13 parts of n-propyl silicate, 12 parts of cellulose triacetate, 35 parts of acrylonitrile-butadiene-styrene copolymer, 12 parts of superfine active silicon powder, 5 parts of dimethyl silicone oil, 11 parts of polymethylpentene resin, 12 parts of polytetrafluoroethylene, 15 parts of octylphenol, 13 parts of ethylene bis-stearamide, 7 parts of ethylene glycol diether, 6 parts of stearate, 12 parts of acrylic emulsion, 15 parts of polymethylphenylsiloxane, 15 parts of thermoplastic polyurethane elastomer, 9 parts of calcium hydrophosphate, 7 parts of polyethylene glycol, 1 part of stabilizer and 0.6 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 190 deg.C, microwave radiation frequency at 100W, temperature of introduced hot air at 70 deg.C, and flow rate at 12cm3Min, the treatment time is 35min, then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding for 20min by an airflow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, introducing mixed liquor for pulse circulation for 3 times under the conditions that the vacuum degree is 10KPa and the stirring speed is 200r/min, wherein the circulation time is 13min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 7.6, then adding stearate, refluxing for 13min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor under the conditions that: keeping the temperature at 40 ℃ and the pressure at 10MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 10Hz and the pulse electric field intensity to be 4 kV-cm, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and a stabilizer consisting of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate and hindered amine UV-3853 with the mass ratio of 1:1.2:1 during the stirring speed conversion period, and carrying out reduced pressure concentration to generate a fluid solution;
s3: the superfine active silicon powder is mixed according to the proportionStirring and dispersing the magnetic bar in ethylene glycol to prepare the material with the concentration of 80mg/mL, adding polymethylphenylsiloxane under the conditions of ultrasonic power of 90W and frequency of 40KHz, treating for 10min, then performing centrifugal separation and cleaning on the ultrasonically treated material in a vacuum environment, cleaning for 2 times with practical purified water, adjusting the pH value to 9.2, performing gas drying at 110 ℃ for 30min to obtain treated superfine active silica micropowder, and mixing the treated superfine active silica micropowder with acrylonitrile-butadiene-styrene copolymer and octylphenol under the vacuum degree of 10-3Mixing and stirring at Pa and a rotating speed of 800r/min, controlling the rotating speed to 500r/min, adding polytetrafluoroethylene, and stirring uniformly; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 20min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 2h, so as to obtain composite particles;
s4, mixing the fluid solution generated in the step S2 and the composite particles obtained in the step S3, adding a composite antioxidant compound antioxidant and cellulose triacetate, wherein the composite antioxidant compound antioxidant comprises 2, 2-methylenebis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, β -octadecyl beta- (4-hydroxy-3, 5-di-tert-butylphenyl) propionate and 2, 4-dihydroxybenzophenone in a mass ratio of 1:0.8:0.8:0.9, under the action of an electromagnetic field, uniformly stirring the mixed material, adding calcium hydrogen phosphate and the thermoplastic polyurethane elastomer through a ball mill for 15min at a temperature of 120 ℃, adding the ball-milled material into a high-speed centrifuge at a speed of 850r/min according to 65% of the total amount, stirring for 18min, adding the rest of the material under a condition of an external magnetic field intensity of 0.3T, adding the rest of the material, stirring for 25min under a condition of a temperature of 180 ℃, adding the ball-milling the mixed material and drying the mixed material, adding the mixture of the thermoplastic polyurethane elastomer and the extrusion into a light guide plate, heating to a low-temperature of a second section, adding the polyurethane elastomer to a second-temperature of a light guide plate for a temperature of 150 ℃ to obtain a third section, drying, adding the thermoplastic polyurethane elastomer through a corona-speed of a second-speed extruder, wherein the mixture of the temperature of the mixture of the temperature of the polyurethane elastomer after the temperature of the second section is 150 ℃ is 150.
The light guide plate 1 prepared as described above has substantially the same structure as in example 1, except that: the light guide plate 1 is a light guide plate with a wedge-shaped section; one side of the thicker surface 124 of the light guide plate 1 is provided with a light inlet layer 11; the light emitting surface 122 of the light guide plate 1 is rectangular, as shown in fig. 10.
Example 11
A light guide plate 1 comprises a light-emitting surface 122, a back surface 121 and a plurality of side surfaces, wherein the light-emitting surface 122 is arranged opposite to the back surface 121, the back surface 121 is provided with light guide points, the side surfaces are connected with the light-emitting surface 122 and the back surface 121, at least one side surface is provided with a light-entering layer 11, a part 12 of the light guide plate except the light-entering layer 11 is a PS layer, and the light-entering layer is made of the following components in parts by weight: 30 parts of polymethyl acrylate, 8 parts of microporous hydroxyapatite, 13 parts of n-propyl silicate, 12 parts of cellulose triacetate, 35 parts of acrylonitrile-butadiene-styrene copolymer, 12 parts of superfine active silicon powder, 5 parts of dimethyl silicone oil, 11 parts of polymethylpentene resin, 12 parts of polytetrafluoroethylene, 15 parts of octylphenol, 13 parts of ethylene bis-stearamide, 7 parts of ethylene glycol diether, 6 parts of stearate, 12 parts of acrylic emulsion, 15 parts of polymethylphenylsiloxane, 15 parts of thermoplastic polyurethane elastomer, 9 parts of calcium hydrophosphate, 7 parts of polyethylene glycol, 1 part of stabilizer and 0.6 part of composite antioxidant.
The preparation method of the light guide plate comprises the following steps:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, and introducing dry hot air for oscillation drying treatment, wherein the conditions of the dryer are as follows: controlling the temperature at 190 deg.C, microwave radiation frequency at 100W, temperature of introduced hot air at 70 deg.C, and flow rate at 12cm3Min, the treatment time is 35min, then the dried microporous hydroxyapatite is cooled to room temperature and is subjected to superfine grinding for 20min by an airflow mill; then deionized water and ethylene are addedFully mixing the bis-stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum cavity, introducing mixed liquor for pulse circulation for 3 times under the conditions that the vacuum degree is 10KPa and the stirring speed is 200r/min, wherein the circulation time is 13min each time, and standing to obtain a suspension;
s2: firstly, adding the polymethyl acrylate with the proportion into an acetone solution to prepare a solution, placing the solution under the condition that the pH value of the solution is 8.5 into a water bath condition at the temperature of 70 ℃, and preserving the heat for 10 min; then carrying out high-temperature calcination on the titanium dioxide, wherein the high-temperature calcination condition is that the titanium dioxide is firstly calcined at the temperature of 150 ℃ for 10min, the heat is preserved for 5min, then the temperature is increased to 220 ℃ according to 2 ℃/min, the heat is preserved for 5min, then the temperature is increased to 300 ℃, the heat is preserved for 8min, during the process, nitrogen is continuously used for continuously blowing, the titanium dioxide after the high-temperature calcination is dispersed for 30min under the condition that the ultrasonic frequency is 15KHz, and the titanium dioxide is added into deionized water to prepare suspension; continuously dropwise adding a titanium dioxide suspension into the polymethyl acrylate solution at the temperature of 90 ℃ according to the weight ratio of the polymethyl acrylate solution to the titanium dioxide suspension of 1:3, fully stirring for 1.5h to obtain modified polymethyl acrylate, carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, mixing with the suspension obtained in the step S1, adjusting the pH value to 7.6, then adding stearate, refluxing for 13min, concentrating to 90% of the volume of the original solution, and then pouring into a pulsed electric field reactor, wherein the conditions are as follows: keeping the temperature at 40 ℃ and the pressure at 10MPa, adjusting the pulse width to be 6 mus, the pulse frequency to be 10Hz and the pulse electric field intensity to be 4 kV-cm, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, wherein the low speed is 300r/min, the high speed is 650r/min, the stirring time is 20min, the interval time is 10min, simultaneously adding ethylene glycol diether and a stabilizer consisting of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate and hindered amine UV-3853 with the mass ratio of 1:1.2:1 during the stirring speed conversion period, and carrying out reduced pressure concentration to generate a fluid solution;
s3: according to the proportionStirring and dispersing the superfine active silicon powder in ethylene glycol by a magnetic bar to prepare the active silicon powder with the concentration of 80mg/mL, adding polymethylphenylsiloxane under the conditions of ultrasonic power of 90W and frequency of 40KHz, treating for 10min, then performing centrifugal separation and cleaning in a vacuum environment after ultrasonic treatment, cleaning for 2 times by using purified water for practical use, adjusting the pH to 9.2, performing gas drying for 30min at the temperature of 110 ℃ to obtain the treated superfine active silicon powder, and mixing the treated superfine active silicon powder with acrylonitrile-butadiene-styrene copolymer and octylphenol under the vacuum degree of 10-3Mixing and stirring at Pa and a rotating speed of 800r/min, controlling the rotating speed to 500r/min, adding polytetrafluoroethylene, and stirring uniformly; then, the temperature is raised to 110 ℃, the mixture in a molten state is extruded and granulated by a double-screw extruder, the granules are soaked in an acetic acid solution containing polymethylpentene resin, and after 20min, suction filtration is carried out, and then drying is carried out in a vacuum drying oven for 2h, so as to obtain composite particles;
s4, mixing the fluid solution generated in the step S2 and the composite particles obtained in the step S3, adding a composite antioxidant compound antioxidant and cellulose triacetate, wherein the composite antioxidant compound antioxidant comprises 2, 2-methylenebis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, β -octadecyl beta- (4-hydroxy-3, 5-di-tert-butylphenyl) propionate and 2, 4-dihydroxybenzophenone in a mass ratio of 1:0.8:0.8:0.9, under the action of an electromagnetic field, uniformly stirring the mixed material, adding calcium hydrogen phosphate and the thermoplastic polyurethane elastomer through a ball mill for 15min at a temperature of 120 ℃, adding the ball-milled material into a high-speed centrifuge at a speed of 850r/min according to 65% of the total amount, stirring for 18min, adding the rest of the material under a condition of an external magnetic field intensity of 0.3T, adding the rest of the material, stirring for 25min under a condition of a temperature of 180 ℃, adding the ball-milling the mixed material and drying the mixed material, adding the mixture of the thermoplastic polyurethane elastomer and the extrusion into a light guide plate, heating to a low-temperature of a second section, adding the polyurethane elastomer to a second-temperature of a light guide plate for a temperature of 150 ℃ to obtain a third section, drying, adding the thermoplastic polyurethane elastomer through a corona-speed of a second-speed extruder, wherein the mixture of the temperature of the mixture of the temperature of the polyurethane elastomer after the temperature of the second section is 150 ℃ is 150.
The light guide plate 1 prepared as described above has substantially the same structure as in example 10 except that: the light emitting surface 122 of the light guide plate 1 is rectangular as shown in fig. 11.
Examples of the experiments
The light transmittance, refractive index, color shift, tensile strength, and light uniformity of the light guide plates manufactured in examples 1 to 11 were measured, respectively, while the light guide plates manufactured from polycarbonate of the prior art were used as comparative examples, and the data of the experimental results are shown in table 1:
table 1: performance comparison between light guide plates prepared according to the present invention and light guide plates of the prior art
And (4) conclusion: as can be seen from the data in Table 1, compared with the prior art, the light guide plate prepared by the invention has high light transmittance, the refractive index is less than or equal to 1.5, the loss of light in a conducting medium is reduced, the color cast is lower, the light guide is more uniform, and the tensile strength is high, wherein the uniformity is more than or equal to 90%.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The preparation method of the light guide plate comprises the following steps that the light guide plate (1) comprises a light emitting surface (122), a back surface (121) and a plurality of side surfaces, the light emitting surface (122) and the back surface (121) are arranged oppositely, the back surface (121) is provided with light guide points, the side surfaces are connected with the light emitting surface (122) and the back surface (121), at least one side surface is provided with a light inlet layer (11), the part (12) of the light guide plate, except the light inlet layer (11), is a PS layer, and the light inlet layer is made of the following components in parts by weight, namely the specific mixture ratio is as follows: 25-30 parts of polymethyl acrylate, 2-8 parts of microporous hydroxyapatite, 10-13 parts of n-propyl silicate, 6-12 parts of cellulose triacetate, 25-35 parts of acrylonitrile-butadiene-styrene copolymer, 10-12 parts of superfine active silicon powder, 4-5 parts of dimethyl silicone oil, 8-11 parts of polymethylpentene resin, 10-12 parts of polytetrafluoroethylene, 8-15 parts of octylphenol, 6-13 parts of ethylene bis-stearamide, 5-7 parts of ethylene glycol diether, 4-6 parts of stearate, 8-12 parts of acrylic emulsion, 11-15 parts of polymethylphenylsiloxane, 12-15 parts of thermoplastic polyurethane elastomer, 6-9 parts of calcium hydrophosphate, 5-7 parts of polyethylene glycol, 0.8-1 part of stabilizer and 0.4-0.6 part of composite antioxidant; the preparation method is characterized by comprising the following steps of:
s1: firstly, feeding the microporous hydroxyapatite into a dryer according to the proportion, introducing dry hot air for oscillation drying treatment for 30-35 min, cooling the dried microporous hydroxyapatite to room temperature, and carrying out ultrafine grinding for 15-20 min by using an air flow mill; fully mixing the deionized water and the ethylene bis stearamide, continuously dropwise adding the dimethyl silicone oil during the mixing period, and stirring after the mixing is finished to prepare a mixed solution; putting the crushed microporous hydroxyapatite into a vacuum chamber, introducing mixed liquid for pulse circulation for 2-3 times under the conditions that the vacuum degree is 8-10 KPa and the stirring speed is 150-200 r/min, wherein the circulation time is 10-13 min each time, and standing to obtain a suspension;
s2: carrying out ultrasonic dispersion treatment on the polymethyl acrylate, the n-propyl silicate and the acrylic emulsion according to the proportion, then heating in a water bath, then mixing with the suspension obtained in the step S1, adjusting the pH value to 6.5-7.6, then adding stearate, refluxing for 10-13 min, concentrating to 90% of the volume of the original solution, then pouring into a pulsed electric field reactor, carrying out low-speed-high-speed-low-speed stirring through carbon dioxide gas, simultaneously adding ethylene glycol diether and a stabilizer during the conversion of the stirring speed, and carrying out reduced pressure concentration to generate a fluid solution;
s3: pretreating the superfine active silicon powder and the polymethylphenylsiloxane according to the proportion, mixing and stirring the treated superfine active silicon powder, an acrylonitrile-butadiene-styrene copolymer and octylphenol under the conditions of vacuum degree of 10 < -1 > -10 < -3 > Pa and rotation speed of 750-800 r/min, controlling the rotation speed to be 450-500 r/min, adding polytetrafluoroethylene, and uniformly stirring; then, raising the temperature to 110 ℃, extruding and granulating the mixture in a molten state by using a double-screw extruder, soaking the granules in an acetic acid solution containing polymethylpentene resin, carrying out suction filtration after 12-20 min, and then drying in a vacuum drying oven for 1-2 h to obtain composite particles;
s4: mixing the fluid solution generated in the step S2 with the composite particles obtained in the step S3, adding a composite antioxidant and cellulose triacetate under the action of an electromagnetic field to uniformly stir the mixed material, drying the mixed material, mixing the dried mixed material with calcium hydrophosphate and a thermoplastic polyurethane elastomer to form a mixed material, melting the mixed material by using an extruder, extruding the mixed material, putting the extruded material into a mixer, increasing the temperature to 360 ℃ at a heating rate of 2-4 ℃/min, adding polyethylene glycol when the temperature reaches 220 ℃, forming the finally obtained product into a sheet through a die, and finally performing corona treatment to obtain the light guide plate.
2. The method of claim 1, wherein the stabilizer is one or more of 2,2,6, 6-tetramethyl-4-piperidyl stearate, zinc ricinoleate, and hindered amine light stabilizer UV-3853.
3. the method of claim 1, wherein the antioxidant compound is one or more of 2, 2-methylenebis (4-methyl-6-tert-butylphenol), 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid, n-octadecyl β - (4-hydroxy-3, 5-di-tert-butylphenyl) propionate, and 2, 4-dihydroxybenzophenone.
4. The method for preparing a light guide plate according to claim 1, wherein the conditions of the pulsed electric field reactor in the step S2 are as follows: keeping the temperature at 25-40 ℃ and the pressure at 5-10 MPa, and adjusting the pulse width to 6 mus, the pulse frequency to 5-10 Hz and the pulse electric field intensity to 2-4 kV cm.
5. The method for preparing a light guide plate according to claim 1, wherein the ultrafine active silica powder is pretreated in step S3 by: stirring and dispersing the superfine active silicon micropowder in ethylene glycol through a magnetic bar to prepare the superfine active silicon micropowder with the concentration of 25-80 mg/mL, adding polymethylphenylsiloxane under the conditions of ultrasonic power of 75-90W and frequency of 35-40 KHz, treating for 5-10 min, then performing centrifugal separation and cleaning under a vacuum environment after ultrasonic treatment, cleaning for 1-2 times with practical purified water, adjusting the pH value to 7.5-9.2, and performing gas drying for 15-30 min at the temperature of 80-110 ℃ to obtain the treated superfine active silicon micropowder.
6. The method of claim 1, wherein the extruder speed in step S4 is 130rpm to 150rpm, the zone temperature is: the first section is 150 ℃, the second section is 170 ℃, the third section is 200 ℃, and after extrusion, air blowing cooling is carried out to room temperature through nitrogen with the low temperature of 4-6 ℃.
7. The method of claim 1, wherein the calcium hydrogen phosphate and the thermoplastic polyurethane elastomer are treated before mixing in step S4: ball-milling calcium hydrogen phosphate and the thermoplastic polyurethane elastomer for 10-15 min by a ball mill at the temperature of 65-120 ℃, then putting 65% of the ball-milled materials into a high-speed centrifuge at the speed of 500-850 r/min, stirring for 12-18 min, putting the rest materials under the condition that the external magnetic field intensity is 0.2-0.3T, and stirring for 20-25 min at the temperature of 180 ℃ and the speed of 300r/min to obtain a mixture of the calcium hydrogen phosphate and the thermoplastic polyurethane elastomer.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331153A (en) * | 2005-12-12 | 2008-12-24 | 株式会社钟化 | Polymer particles, process for production thereof, resin compositions containing the particles, and moldings |
| CN103073867A (en) * | 2012-12-28 | 2013-05-01 | 东莞市普凯塑料科技有限公司 | Light diffusion master batch for transparent plastics and preparation method thereof |
| CN103221853A (en) * | 2010-11-16 | 2013-07-24 | 高通Mems科技公司 | Light guide with diffusive light input interface |
| JP2016519777A (en) * | 2013-03-12 | 2016-07-07 | ショット コーポレーションＳｃｈｏｔｔ Ｃｏｒｐｏｒａｔｉｏｎ | Optical element for Mie scattering of light from an optical fiber |
| KR101827362B1 (en) * | 2016-08-30 | 2018-02-09 | 주식회사 케이씨텍 | Inorganic particles containing-organic nano dispersion composition, film and optic member for display comprising the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757616B (en) * | 2011-04-27 | 2015-01-28 | 合肥杰事杰新材料股份有限公司 | Resin material and preparation method thereof |
| CN102807723A (en) * | 2011-05-31 | 2012-12-05 | 合肥杰事杰新材料股份有限公司 | ABS resin and preparation method thereof |
-
2019
- 2019-01-31 CN CN201910094691.9A patent/CN109782386B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331153A (en) * | 2005-12-12 | 2008-12-24 | 株式会社钟化 | Polymer particles, process for production thereof, resin compositions containing the particles, and moldings |
| CN103221853A (en) * | 2010-11-16 | 2013-07-24 | 高通Mems科技公司 | Light guide with diffusive light input interface |
| CN103073867A (en) * | 2012-12-28 | 2013-05-01 | 东莞市普凯塑料科技有限公司 | Light diffusion master batch for transparent plastics and preparation method thereof |
| JP2016519777A (en) * | 2013-03-12 | 2016-07-07 | ショット コーポレーションＳｃｈｏｔｔ Ｃｏｒｐｏｒａｔｉｏｎ | Optical element for Mie scattering of light from an optical fiber |
| KR101827362B1 (en) * | 2016-08-30 | 2018-02-09 | 주식회사 케이씨텍 | Inorganic particles containing-organic nano dispersion composition, film and optic member for display comprising the same |
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| CN109782386A (en) | 2019-05-21 |
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