CN114479412A - Resin composition with Rayleigh scattering function and preparation method and application thereof - Google Patents

Resin composition with Rayleigh scattering function and preparation method and application thereof Download PDF

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CN114479412A
CN114479412A CN202210216954.0A CN202210216954A CN114479412A CN 114479412 A CN114479412 A CN 114479412A CN 202210216954 A CN202210216954 A CN 202210216954A CN 114479412 A CN114479412 A CN 114479412A
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polycarbonate
rayleigh scattering
resin composition
scattering function
polyorganosiloxane copolymer
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严萌
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Guangzhou Honors Chemical Technology Co ltd
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Guangzhou Honors Chemical Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

The invention discloses a resin composition with a Rayleigh scattering function, which comprises the following raw materials: polycarbonate resins and polycarbonate-polyorganosiloxane copolymers. The invention utilizes the characteristic of the average size of the siloxane nano-structured domain embedded in the polycarbonate-polyorganosiloxane copolymer, and adopts the matching of two or more polycarbonate-polyorganosiloxane copolymers to seek the optimal combination between the haze and the light transmittance of the material, so that the commercial scale production of the Rayleigh scattering diffusion plate is no longer an industry pain point, and the whole scheme of the Rayleigh scattering sunlight system is easier to realize.

Description

Resin composition with Rayleigh scattering function and preparation method and application thereof
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a resin composition with a Rayleigh scattering function, and a preparation method and application thereof.
Background
At present, researches show that people feel more comfortable in an indoor environment with sunlight entering, the working pressure and negative influence of people are reduced by sunlight irradiation, the comfortable mood and the working efficiency are enhanced, and the physical and mental health of people living indoors is improved in the long run; however, some indoor places cannot be irradiated by sunlight, such as offices, conference rooms, underground malls and the like without natural ambient light, and when the outside has no obvious visual field, the enclosed offices and rooms are easy to be suppressed, so there are many reports of rayleigh scattering sunlight systems, which create a more comfortable working environment for people, such as the sunlight system reported in patents CN111649271A, CN111623283A and CN110778927A, which can simulate the effect of the sun and the diffuse blue sky, and in these lighting systems, the key material used is a scattering diffusion plate, but the preparation of the rayleigh scattering diffusion plate is not described.
The rayleigh scattering in the published patents is achieved by adding inorganic nanomaterials to transparent polymers, such as: CN112876795A mentions that the nano-scattering particles are selected from at least one of silicon dioxide, titanium dioxide, zinc oxide or other metal oxide particles, CN112980125A mentions that the nano-oxide particles include silicon dioxide, titanium dioxide, zinc oxide and aluminum oxide, and CN105765415A describes that the nano-material is made of inorganic material, preferably selected from metal oxide, more preferably selected from titanium dioxide, silicon dioxide, zinc oxide, zirconium dioxide, ferric oxide, aluminum oxide, Sb 105765415A2SnO5Bismuth trioxide, cerium dioxide; to comply with the rayleigh scattering requirement, the diameter of the microparticles must be much smaller than the wavelength of the incident wave, typically about 1/10(1-300nm) at the upper bound, the main and critical requirement being that the nanoparticles must be uniformly and randomly distributed within the transparent polymer matrix, but it has been shown in the open literature that this is very difficult to achieve, both in large-scale commercial production and in laboratory-scale experiments, because the nanoparticles are always prone to aggregation during their fusion into the polymer matrix.
Therefore, the invention provides a resin composition with a Rayleigh scattering function, which utilizes the characteristic of the average size of 18-54 nano structural domains of siloxane (PDMS) embedded in a polycarbonate-polyorganosiloxane copolymer and adopts the matching of two or more polycarbonate-polyorganosiloxane copolymers to seek the optimal combination between the haze and the light transmittance of the material, thereby perfectly solving the limitations, ensuring that the commercial scale production of a Rayleigh scattering diffusion plate is no longer an industry pain point, and simultaneously, the whole scheme of the Rayleigh scattering solar lamp system is easier to realize.
Disclosure of Invention
In view of the above, the present invention provides a resin composition with rayleigh scattering function, and a preparation method and an application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a resin composition having a Rayleigh scattering function, comprising the following raw materials: polycarbonate resins and polycarbonate-polyorganosiloxane copolymers.
Preferably, the polycarbonate resin is 1 to 99% by mass, and the polycarbonate-polyorganosiloxane copolymer is 99 to 1% by mass.
Preferably, at least one of a lubricant, a heat stabilizer, an ultraviolet absorber, a flame retardant and a coloring agent is further included.
Preferably, the lubricant, the heat stabilizer, the ultraviolet absorber, the flame retardant and the coloring agent are respectively present in a mass percentage of 0 to 0.4%, 0 to 0.5%, 0 to 0.3%, 0 to 0.1% and 0 to 0.01% based on the total amount of the polycarbonate resin and the polycarbonate-polyorganosiloxane copolymer, wherein at least one of them is not 0.
Preferably, the polycarbonate resin is a mixture of polycarbonate resins having a weight average molecular weight of 21000-23000 and 29900-31000.
Preferably, the polycarbonate-polyorganosiloxane copolymer is a mixture of a first polycarbonate-polyorganosiloxane copolymer having a first light transmittance and a first haze and a second polycarbonate-polyorganosiloxane copolymer having a second light transmittance and a second haze; wherein the first turbidity and the second turbidity have an absolute difference of at least 50 and/or the first light transmission and the second light transmission have an absolute difference of at least 10%.
Preferably, the first light transmittance is 0-55%, and the first turbidity is 45-104; the second light transmittance is 55-100%, and the second turbidity is 0-45.
Preferably, the average chain length of the siloxane blocks in the polycarbonate-polyorganosiloxane copolymer is 30-90, and the average size of the siloxane block domains is 18-54 nm.
Preferably, the lubricant includes at least one of an aliphatic carboxylic acid, an ester prepared from an aliphatic carboxylic acid and an alcohol, an aliphatic hydrocarbon compound having a number average molecular weight of 200-15000, and a silicone-based silicone oil.
Preferably, the aliphatic carboxylic acid includes any one of saturated or unsaturated aliphatic monocarboxylic acids, aliphatic dicarboxylic acids, aliphatic tricarboxylic acids, and alicyclic carboxylic acids.
Preferably, the aliphatic carboxylic acids include monocarboxylic acids and dicarboxylic acids having 6 to 36 carbon atoms.
Preferably, the aliphatic carboxylic acid comprises a saturated aliphatic monocarboxylic acid having 6 to 36 carbon atoms.
Preferably, the aliphatic carboxylic acid includes any one of palmitic acid, stearic acid, caproic acid, capric acid, lauric acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid (cerotic acid), melissic acid (melissic acid), tetratriacontanoic acid (tetratriacontanoic acid), montanic acid, adipic acid, and azelaic acid.
Preferably, the ester of an aliphatic carboxylic acid with an alcohol can be produced using the same aliphatic carboxylic acid as described above as the aliphatic carboxylic acid in the ester of an aliphatic carboxylic acid with an alcohol;
the alcohol includes at least one of saturated or unsaturated monohydric alcohol or polyhydric alcohol, wherein the alcohol may have a substituent such as a fluorine atom or an aryl group; the saturated monohydric alcohol or polyhydric alcohol having 30 or less carbon atoms is preferable, and any of the saturated aliphatic monohydric alcohol, saturated aliphatic polyhydric alcohol, and alicyclic compound having 30 or less carbon atoms is more preferable.
Preferably, the alcohol includes at least one of octanol, decanol, dodecanol, stearyl alcohol, behenyl alcohol, ethylene glycol, diethylene glycol, glycerol, pentaerythritol, 2-dihydroxyperfluoropropanol, neopentyl glycol (neopentylene glycol), ditrimethylolpropane, and dipentaerythritol.
Preferably, the ester may be a single species, and may also be a mixture of compounds; the aliphatic carboxylic acid and the alcohol bonded to each other to form an ester may each be a single compound or two or more thereof may be arbitrarily combined in any ratio.
Preferably, the ester of an aliphatic carboxylic acid with an alcohol comprises at least one of beeswax (a mixture comprising predominantly myricyl palmitate), stearyl stearate, behenyl behenate, stearyl behenate, glycerol monopalmitate, glycerol monostearate, glycerol distearate, glycerol tristearate, pentaerythritol monopalmitate, pentaerythritol monostearate, pentaerythritol distearate, pentaerythritol tristearate and pentaerythritol tetrastearate.
Preferably, the aliphatic hydrocarbon compound having a number average molecular weight of 200-; in addition, aliphatic hydrocarbons also include alicyclic hydrocarbons, which may be partially oxidized.
Preferably, the aliphatic hydrocarbon compounds having a number average molecular weight of 200-.
Preferably, the aliphatic hydrocarbon compound having a number average molecular weight of 200-.
Preferably, the aliphatic hydrocarbon has a number average molecular weight of 5000 or less.
Preferably, the aliphatic hydrocarbon may be a single substance or a mixture of aliphatic hydrocarbons having various constituent components and molecular weights, but it is preferable to use a mixture in which the main component has a number average molecular weight falling within the above range.
Preferably, the content of the lubricant is usually 0.001% or more, preferably 0.01% or more, and usually 2% or less, preferably 1% or less. If the content of the lubricant is not higher than the lower limit of the above numerical range, the mold release effect may be insufficient, and if the content of the lubricant exceeds the upper limit of the above numerical range, hydrolysis resistance may be deteriorated and mold contamination may occur at the time of injection molding.
Preferably, the heat stabilizer includes oxyacids of phosphorus, such as phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, and polyphosphoric acid; acid metal pyrophosphate salts such as sodium acid pyrophosphate, potassium acid pyrophosphate, and calcium acid pyrophosphate; phosphates of group 1 metals or group 2B metals, such as potassium phosphate, sodium phosphate, cesium phosphate, and zinc phosphate; organic phosphate compounds, organic phosphite compounds and organic phosphonite compounds.
Preferably, the organophosphite compound comprises at least one of triphenyl phosphite, tris (monononylphenyl) phosphite, tris (monononyl/dinonyl-phenyl) phosphite, tris (2, 4-di-tert-butylphenyl) phosphite, monooctyl diphenyl phosphite, dioctylmonophenyl phosphite, monodecyl diphenyl phosphite, didecyl monophenyl phosphite, tridecyl phosphite, trilauryl phosphite, trioctadecyl phosphite and 2, 2-methylene-bis (4, 6-di-tert-butylphenyl) octyl phosphite.
Preferably, the organophosphite compound includes at least one of "ADKStab 1178", "ADK Stab 2112" and "ADK Stab HP-10" manufactured by ADEKA Corporation, "JP-351", "JP-360" and "JP-3CP" manufactured by Jojoku Chemical Co., Ltd., and "Irgafos 168" manufactured by BASF Corporation.
Preferably, the content of the heat stabilizer is usually 0.001% or more, preferably 0.01% or more, more preferably 0.03% or more, and usually 1% or less, preferably 0.7% or less, more preferably 0.5% or less. If the content of the heat stabilizer is not higher than the lower limit of the above numerical range, the heat stabilizing effect may be insufficient, and if the content of the heat stabilizer exceeds the upper limit of the above numerical range, the effect reaches its limit, which may result in economical deterioration.
The flame retardant is preferably a flame retardant additive containing no bromine or chlorine, and various compounds known as flame retardants for thermoplastic resins, particularly aromatic polycarbonate resins, can be applied, and more preferably an organic metal salt flame retardant such as an alkali (earth) metal organosulfonate, a borate metal salt flame retardant, a stannate metal salt flame retardant, and the like; the organic phosphorus flame retardant is, for example, an organic silicon flame retardant comprising an organic silicon compound and a monophosphate compound, a phosphate oligomer compound, a phosphonate oligomer compound, a phosphazene oligomer compound, a phosphonic acid amide compound, or the like.
Preferably, the flame retardant is a combination of a perfluoroalkylsulfonate such as potassium perfluorobutylsulfonate ("Rimar salt") and a silicone-based flame retardant such as octaphenylcyclotetrasiloxane.
Preferably, the ultraviolet absorber includes inorganic ultraviolet absorbers such as cerium oxide and zinc oxide; organic ultraviolet absorbers such as benzotriazole-based compounds, benzophenone-based compounds, salicylate-based compounds, cyanoacrylate-based compounds, triazine-based compounds, oxalanilide-based compounds, malonate-based compounds, and hindered amine-based compounds; among them, organic ultraviolet absorbers are preferable, and benzotriazole compounds are more preferable, and the transparency and mechanical properties of the polycarbonate resin composition are maintained by selecting the organic ultraviolet absorbers.
Preferably, the benzotriazole compound comprises 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2- [2 '-hydroxy-3', 5 '-bis (. alpha.,. alpha. -dimethylbenzyl) phenyl ] -benzotriazole, 2- (2' -hydroxy-3 ', 5' -di-tert-butyl-phenyl) -benzotriazole, 2- (2 '-hydroxy-3' -tert-butyl-5 '-methylphenyl) -5-chlorobenzotriazole, 2- (2' -hydroxy-3 ', 5' -di-tert-butyl-phenyl) -5-chlorobenzotriazole, 2- (2 '-hydroxy-3', 5 '-di-tert-amyl) -benzotriazole, 2-methyl-ethyl-phenyl-2-hydroxy-3', 5 '-di-tert-butyl-phenyl-benzotriazole, 2-methyl-phenyl-benzotriazole, 2-methyl-triazole, 2-phenyl-benzotriazole, 5' -bis (di-tert-butyl-phenyl) -benzotriazole, 2-methyl-benzotriazole, 2-phenyl-benzotriazole, 2-bis (di-2-phenyl) -2-benzotriazole, 2-bis (p-phenyl) -2-benzotriazole) and 2-benzotriazole, At least one of 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole and 2,2 '-methylene-bis [4- (1,1,3, 3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol ], and among them, 2- (2' -hydroxy-5 '-tert-octylphenyl) benzotriazole and 2, 2' -methylene-bis [4- (1,1,3, 3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol ] are preferable, and 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole is particularly preferable.
Preferably, the benzotriazole compounds include at least one of "Seesorb 701", "Seesorb 702", "Seesorb 703", "Seesorb 704", "Seesorb 705", and "Seesorb 709", manufactured by Shipro Kasei Corporation, ltd, "Biosorb 520", "Biosorb580", "Biosorb 582", and "Biosorb 583", manufactured by kyoo Chemical co, ltd, "Kemisorb 71", and "Kemisorb 72", manufactured by Chemipro Kasei Kaisha, ltd, "Cyasorb UV5411", manufactured by Cytec Industries, "LA-32", "LA-38", "LA-36", "LA-34", and "LA-31", manufactured by ADEKA Corporation, and "Tinuvin P", "Tinuvin 234", and "Tinuvin" 327", manufactured by BASF Corporation, 328.
Preferably, the content of the ultraviolet absorber is usually 0.001% or more, preferably 0.05% or more, and usually 1% or less, preferably 0.5% or less. If the content of the ultraviolet absorber is less than the lower limit of the above numerical range, the weather resistance improving effect is poor, and if the content of the ultraviolet absorber exceeds the upper limit of the above numerical range, mold deposits (mold deposits) and the like occur and mold contamination is liable to occur.
Preferably, the colorant may optionally include a colorant composition containing a pigment or dye additive; useful pigments therein may include, for example, inorganic pigments, metal oxides and mixed metal oxides, zinc oxide, titanium dioxide, or iron oxide; sulfides such as zinc sulfide and the like; an aluminate salt; sodium sulfosilicate sulfates, chromates; carbon black; zinc ferrite; ultramarine; organic pigments such as azo, diazo, quinacridone, perylene, naphthalene tetracarboxylic acid, flavanthrone, isoindolinone, tetrachloroisoindolinone, anthraquinone, enthrones, dioxazine, phthalocyanine and azo lakes; pigment red 101, pigment red 122, pigment red 149, pigment red 177, pigment red 179, pigment red 202, pigment violet 29, pigment blue 15, pigment blue 60, pigment green 7, pigment yellow 119, pigment yellow 147, pigment yellow 150, and pigment brown 24; or a combination thereof.
Preferably, the coloring agent is selected from any one of anthraquinone dyes and organic pigments.
The preparation method of the resin composition with the Rayleigh scattering function comprises the following specific steps:
(1) weighing raw materials of polycarbonate resin, polycarbonate-polyorganosiloxane copolymer, lubricant, antioxidant, ultraviolet absorbent, flame retardant and coloring agent according to a proportion for later use;
(2) and (2) uniformly mixing the raw materials, and then sequentially extruding, cooling, drying and granulating to obtain the resin composition with the Rayleigh scattering function.
Preferably, the extrusion is performed using a single screw extruder or a twin screw extruder.
Preferably, a polymer filter for removing gel components and other foreign materials is provided on the upstream side of the extruder die, and the polymer filter used may be a filter for filtration treatment, and specific filter forms include: candle type, pleated type, leaf disc type, and the like, and as filter materials, there are mentioned: sintered metal filters, metal fiber nonwoven fabric filters, ceramic filters, membrane filters made of heat-resistant resin, and the like; the filter preferably has a filtration accuracy of 50 μm or less, more preferably 30 μm or less, and still more preferably 10 μm or less, and is about 10 μm, and can suitably remove gel components and other foreign substances.
Preferably, the temperature of the extrusion in step (2) is 260-325 ℃.
When the temperature of the molten resin is lower than 260 ℃, the viscosity of the molten resin in the extruder increases, and the molten resin is not allowed to pass through a filter provided for removing gel components and other foreign matters. When the temperature of the molten resin exceeds 325 ℃, yellowing is liable to occur in the case of producing a molded article, which is not preferable. The molten resin temperature is preferably set at 270-300 ℃. The temperature of the molten resin can be easily measured by a non-contact thermometer using infrared rays, for example.
Preferably, the granulation is carried out by cutting with a granulator to obtain granules having a prescribed length, and usually granules having a diameter of 2 to 5mm, a length of 2 to 6mm, and a cylindrical or elliptic cylindrical shape are obtained.
The resin composition with Rayleigh scattering function obtained by the preparation method or the resin composition with Rayleigh scattering function obtained by the preparation method is applied to an illumination system.
An illumination system comprising a light diffusion plate prepared from the above-mentioned one resin composition having a rayleigh scattering function or the above-mentioned one resin composition having a rayleigh scattering function obtained by the above-mentioned preparation method.
Preferably, the light diffusion plate has a thickness of 1.5 to 6.0 mm.
Preferably, the resin composition capable of realizing rayleigh scattering is formed into a light diffusion plate by injection molding or extrusion molding.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a resin composition with a Rayleigh scattering function, a preparation method and application thereof, which utilize the characteristic of the average size of a siloxane nano-structured domain embedded in a polycarbonate-polyorganosiloxane copolymer and adopt the matching of two or more polycarbonate-polyorganosiloxane copolymers to seek the optimal combination between the haze and the light transmittance of the material, so that the commercial scale production of a Rayleigh scattering diffusion plate is no longer an industrial pain point, and the whole scheme of a Rayleigh scattering sunlight system is easier to realize.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a chart showing the effect of evaluation of the perception of blue color of a color plate prepared from the composition of example 18 of the present invention;
FIG. 2 is a chart showing the effect of evaluation of the viewing blueness of a color sheet prepared from the composition of example 19 in accordance with the present invention;
FIG. 3 is a chart showing the evaluation effect of the blue color of the look and feel of a color sheet prepared from the composition of example 20 in accordance with the present invention;
FIG. 4 is a chart showing the effect of evaluation of the blue color of the look and feel of a color sheet prepared from the composition of example 23 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A preparation method of a resin composition with Rayleigh scattering function comprises the following specific steps:
(1) weighing raw materials according to mass percentage for later use;
(2) after the raw materials were uniformly mixed at 500rpm in a high-speed mixer, the blend was fed through a hopper to the throat of a vented twin-screw extruder (manufactured by toshiba mechanical corporation, "TEM-37 SS", L/D ═ 40) to obtain pellets by melt-kneading under the extruder temperature conditions described in table 1, and a resin composition having a rayleigh scattering function was obtained, wherein the degree of vacuum of the vent was negative pressure of-720 mmHg and a disk filter having an absolute filtration accuracy of 10 μm was used as the polymer filter.
TABLE 1 extruder temperature Condition parameters
Parameter(s) Measurement Unit Set value
Extruder type Is free of Toshiba TEM-37SS
Size of the barrel mm 1500
Die hole size mm 4
Temperature of zone 1 ℃ 50
Zone 2 temperature ℃ 100
Zone 3 temperature ℃ 200
Zone 4 temperature ℃ 250
Zone 5 temperature ℃ 260
Zone 6 temperature ℃ 260
Temperature of zone 7 ℃ 260
Zone 8 temperature ℃ 260
Temperature of zone 9 ℃ 265
Temperature of zone 10 ℃ 265
Temperature of zone 11 ℃ 265
Mold temperature ℃ 270
Speed of screw rpm 300
Yield of the product kg/hr 40
Vacuum Mpa -0.08
Examples 1 to 6
A resin composition with Rayleigh scattering function is prepared by the method as above, wherein the mass percentages and detection results of the raw material components are shown in Table 2,
table 2 examples 1-6 raw material ratios and test results
Figure BDA0003535330550000101
Figure BDA0003535330550000111
As can be seen from the data in Table 2, the increase in PC-1 and the decrease in PC/PDMS-1 are not apparent in increasing light transmittance or decreasing turbidity, and microscopic analysis shows that increasing PC-1 results only in a decrease in the number of PDMS domains, but does not result in a consistent decrease in the size of the PDMS domains.
Examples 7 to 13
A resin composition with Rayleigh scattering function is prepared by the method as above, wherein the mass percentages and detection results of the raw material components are shown in Table 3,
table 3 raw material ratios and test results of examples 7 to 13
Examples 7 8 9 10 11 12 13
PC/PDMS-1[wt％] 30 24 18 12 6 3
PC/PDMS-2[wt％] 70 76 82 88 94 97 100
Irgafos 168[wt％] 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Siloxane [ wt.%] 10.2 9.4 8.5 7.7 6.8 6.4 6.0
Luminous transmittance [% ]] 35 40 45 56 74 81 85
Turbidity (Haze) 99 91 76 42 10 5 3
Average PDMS Domain size [ nm ]] 39 40 38 25 25 22 18
As can be seen from the data in Table 3, a series of compositions given in examples 7-13 have the same percentage content of PC/PDMS-1 as the compositions in Table 2, but the series of compositions was PC/PDMS-2 instead of PC-1, and it was found that the replacement of PC-1 with PC/PDMS-2 resulted in a significant increase in light transmittance and a significant decrease in haze, and microscopic analysis showed that the addition of PC/PDMS-2 resulted in a consistent decrease in the average size of the PDMS domains.
Examples 14 to 17
A resin composition with Rayleigh scattering function is prepared by the method as above, wherein the mass percentages and the detection results of the raw material components are shown in Table 4,
TABLE 4 examples 14 to 17 raw material ratios and test results
Figure BDA0003535330550000112
Figure BDA0003535330550000121
As can be seen from the data in Table 4, the compositions of examples 14-17 have the same PC/PDMS-1 content as the compositions in tables 2 and 3, but this series of compositions was maintained with PC/PDMS-2 and PC-1 at a constant total siloxane content of 6 wt%, and from the relevant results it can be seen that the use of PC/PDMS-2 mixing has a significant effect on the average size of the siloxane domains in the final composition, and that the haze and light transmittance can vary from 3 to 103 and from 28 to 84%, respectively.
Examples 18 to 24
A resin composition with Rayleigh scattering function is prepared by the method as above, wherein the mass percentages and detection results of the raw material components are shown in Table 5 and figures 1-4,
TABLE 5 examples 18-24 raw material ratios and test results
Figure BDA0003535330550000122
Figure BDA0003535330550000131
As can be seen from the data in Table 5 and FIGS. 1 to 4, examples 18 to 24 are based on the data in tables 2 to 4, and based on practical application scenarios, suitable turbidity and light transmittance are controlled, and examples 13, 16 and 17 are used as the basis, and methods for improving the flame retardant property and the processability of the final composition on the premise of not influencing the turbidity and the light transmittance are researched, so that the weather resistance of the composition is further improved in consideration of the application scenarios, and the composition achieves the required technical effect according to the perception of blue degree, and has remarkable progress.
Wherein PC-1 used in examples 1-24 is bisphenol A polycarbonate prepared by an interfacial process, having an absolute weight average molecular weight of about 21800g/mol, a light transmittance of about 89%, and a haze of about 1; PC-2 is a bisphenol A polycarbonate prepared by an interfacial process, having an absolute weight average molecular weight of about 30500g/mol, a light transmittance of about 89%, and a haze of about 1; PC/PDMS-1 is a siloxane having about 20 wt% based on the total copolymer, has a absolute weight average molecular weight of about 30000g/mol, has a light transmittance of less than about 30%, and has a haze of about 104; PC/PDMS-2 is a siloxane having about 6 wt%, based on the total copolymer, having an absolute weight average molecular weight of about 23500g/mol, a light transmittance of about 84%, and a haze of about 2;
the method for detecting the related performance comprises the following steps: the following properties of the compositions were tested by injection molding the corresponding test specimens or plaques on an injection molding machine:
1) haze and light transmittance: according to ASTM D1003, using Gardner Haze Guard Duel, 3.0mm thickness of the template on;
2) samples were cut from a 3.0mm thick template, prepared at room temperature, and micrographs (magnification 135,000) were obtained by transmission electron microscopy (FEI, Technai 12), from which the average size of the siloxane domains was determined using analytical software (SIS) which allows manual selection of domain boundaries, and for each sample the longest dimension of about 25 domains was determined twice;
3) the volume flow rate, MVR, was determined according to ISO 1133 at 300 ℃ using a 1.2Kg weight;
4) flammability testing was performed according to the procedure of UL94, before testing, the specimens were pre-treated at 70 ℃ for 168h in an air circulation oven and then cooled at room temperature in a desiccator for at least 4h, and once removed from the desiccator, the specimens were tested within 30 min;
5) the blue color was visually evaluated by placing 1.5mm and 3.0mm thick color plates on top of the fixture of a solar light system.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A resin composition having a Rayleigh scattering function, comprising the following raw materials: polycarbonate resins and polycarbonate-polyorganosiloxane copolymers.
2. The resin composition having a rayleigh scattering function according to claim 1, wherein the polycarbonate resin is 1 to 99% by mass, and the polycarbonate-polyorganosiloxane copolymer is 99 to 1% by mass.
3. The resin composition having a rayleigh scattering function according to claim 1, further comprising at least one of a lubricant, a heat stabilizer, an ultraviolet absorber, a flame retardant and a coloring agent.
4. The resin composition having a rayleigh scattering function according to claim 3, wherein the mass percentages of the lubricant, the heat stabilizer, the ultraviolet absorber, the flame retardant and the coloring agent are 0-0.4%, 0-0.5%, 0-0.3%, 0-0.1% and 0-0.01%, respectively, based on the total amount of the polycarbonate resin and the polycarbonate-polyorganosiloxane copolymer, and at least one of them is not 0.
5. The resin composition having a Rayleigh scattering function as claimed in any one of claims 1 to 4, wherein the polycarbonate resin is a mixture of polycarbonate resins having a weight average molecular weight of 21000-23000 and 29900-31000.
6. The resin composition having a rayleigh scattering function according to any one of claims 1-4, wherein the polycarbonate-polyorganosiloxane copolymer is a mixture of a first polycarbonate-polyorganosiloxane copolymer having a first light transmittance and a first turbidity and a second polycarbonate-polyorganosiloxane copolymer having a second light transmittance and a second turbidity; wherein the first turbidity and the second turbidity have an absolute difference of at least 50 and/or the first light transmission and the second light transmission have an absolute difference of at least 10%.
7. The resin composition with Rayleigh scattering function as claimed in claim 6, wherein the average chain length of the siloxane block in the polycarbonate-polyorganosiloxane copolymer is 30-90, and the average size of the siloxane block domain is 18-54 nm.
8. A preparation method of a resin composition with Rayleigh scattering function is characterized by comprising the following specific steps:
(1) weighing the raw materials of polycarbonate resin, polycarbonate-polyorganosiloxane copolymer, lubricant, heat stabilizer, ultraviolet absorbent, flame retardant and coloring agent according to the proportion of any one of claims 1 to 7 for later use;
(2) and (2) uniformly mixing the raw materials, and then sequentially extruding, cooling, drying and granulating to obtain the resin composition with the Rayleigh scattering function.
9. Use of a resin composition having a rayleigh scattering function according to any one of claims 1-7 or a resin composition having a rayleigh scattering function obtained by the production method according to claim 8 in an illumination system.
10. An illumination system comprising a light diffusion plate produced from the resin composition having a rayleigh scattering function according to any one of claims 1 to 7 or the resin composition having a rayleigh scattering function obtained by the production method according to claim 8.
CN202210216954.0A 2022-03-07 2022-03-07 Resin composition with Rayleigh scattering function and preparation method and application thereof Pending CN114479412A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1751096A (en) * 2003-02-21 2006-03-22 通用电气公司 Translucent thermoplastic composition, method for making the composition and articles molded there from

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1751096A (en) * 2003-02-21 2006-03-22 通用电气公司 Translucent thermoplastic composition, method for making the composition and articles molded there from

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