CN107266807A - A kind of photodiffusion material - Google Patents
A kind of photodiffusion material Download PDFInfo
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- CN107266807A CN107266807A CN201710424687.5A CN201710424687A CN107266807A CN 107266807 A CN107266807 A CN 107266807A CN 201710424687 A CN201710424687 A CN 201710424687A CN 107266807 A CN107266807 A CN 107266807A
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- antioxidant
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/10—Copolymers of styrene with conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
- C08G77/392—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing sulfur
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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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
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The present invention relates to a kind of photodiffusion material, belong to solid-state semiconductor device Material Field.The present invention reacts generation organosilicon as raw material in the basic conditions using vinyltrimethoxy silane first, S elements are introduced using the vinyl in organosilicon and sulfydryl propylene acid reaction, improve the refractive index and anti-flammability of material, and do not influence the light transmittance of material, the styrene-butadiene transparent impact resins using high transmission rate is raw materials again, and being modified through divinylbenzene increases resin crosslink density, and heat endurance is improved, finally with the extruding pelletization such as antioxidant, photodiffusion material is obtained.Photodiffusion material prepared by the present invention can be while take into account high transmission rate and haze, and wherein light transmittance is up to more than 86%, and mist degree also has preferably fire resistance up to more than 93%.
Description
Technical field
The present invention relates to a kind of photodiffusion material, belong to solid-state semiconductor device Material Field.
Background technology
LED is used as a kind of solid-state semiconductor device for directly converting electrical energy into luminous energy, not only with sound construction, antidetonation
The advantages of impact resistance, fast speed of photoresponse, long lifespan, and energy consumption is low.Illuminated with it, in theory only incandescent lamp 10%
Energy consumption, compared to fluorescent lamp, LED can also reach 50% energy-saving effect.For display, the purpose of energy-conservation is not only reached, and
Device ultrathin, lightweight, long lifespan can be made.Therefore, LED has turned into green illumination and display light source truly, extensively
It is general to be used for all trades and professions such as city and domestic lighting, electronic apparatus, automobile, it is ubiquitous in modern society.
But LED is high due to its brightness, intensity is big, and light radiating surface is narrow, and the uniformity is low, and light source directivity is strong, is also easy to produce dazzle
Deng these defects hinder LED application and popularization；The use of photodiffusion material can solve these problems；Therefore, with
LED illumination technology is developed rapidly and extensive use, and photodiffusion material with haze and high transmission rate turns into Material Field
New study hotspot.
The preparation method on photodiffusion material is in makrolon, polymethyl methacrylate and polystyrene etc. at present
Light diffusing agent is added in resin material, to reach the purpose of light scattering.The important technological parameters of photodiffusion material performance include saturating
Light rate and mist degree.Light transmittance represents overall utilization of the photodiffusion material to incident light, and mist degree then represents that incident light deviates original
The degree of incident direction, therefore the diffusion that can be introduced for sign photodiffusion material to incident light.For being dissipated based on particle
For the photodiffusion material penetrated, the increase of mist degree must cause the reduction of light transmittance greatly.Although current photodiffusion material has
Commercial product, but high transmission rate and haze and the contradiction deposited do not solved very well, when keeping haze, light transmittance
Decline nearly 20%, photodiffusion material performance also there is ample room for improvement space, and the photodiffusion material prepared by raw material of makrolon
It can not realize fire-retardant and long-acting thermally-stabilised use, it is impossible to while having both high transmission rate and haze.
Therefore, how to realize that one kind has both high transmission rate and haze, and it is industry to possess the photodiffusion material of fire resistance
Interior technical problem urgently to be resolved hurrily.
The content of the invention
The technical problems to be solved by the invention：For the photodiffusion material prepared at present with resin materials such as makrolon
High transmission rate and haze can not be had both simultaneously, while there is provided a kind of photodiffusion material for the problem of not possessing fire resistance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of photodiffusion material, includes the raw material of following parts by weight：
50~60 parts of transparent butadiene-styrene impact resin, 15~20 parts of modified vinyl silicones microballoon, 3~5 parts of divinylbenzene and
Antioxidant；
Described modified vinyl silicones microballoon is obtained by the reaction of following raw material：150~200mL mass fractions are 15%
Ammoniacal liquor, 8~10mL emulsifying agents, 25~30mL vinyltrimethoxy silanes, 50~60mL mass fractions be 10% acetum,
0.2~0.4g benzoin dimethylethers, 8~12mL3- mercaptopropionic acids；
Specific preparation method is as follows：
（1）The synthesis of modified vinyl silicones microballoon：After 50~60 DEG C mix ammoniacal liquor, emulsifier for mixing, then second is added dropwise
Alkenyl trimethoxy silane, regulation mixing speed is 160~180r/min, and insulated and stirred reacts 2~3h, after reaction terminates, then
Acetum is added, is centrifuged after stirring mixing, obtains sediment, ultrasonic disperse after sediment is mixed with absolute ethyl alcohol,
Suspension is obtained, 30~40min of stirring reaction under benzoin dimethylether and 3- mercaptopropionic acids, ultraviolet light is added into suspension
Afterwards, filter, obtain filter residue, filter residue is washed with alcohol, dried, modified vinyl silicones microballoon is produced；
（2）The preparation of photodiffusion material：At 70~80 DEG C by transparent butadiene-styrene impact resin, modified vinyl silicones, divinyl
After base benzene, 40~50min of antioxidant stirring reaction, product is obtained, product is placed in double screw extruder, set head temperature
Spend for 260~280 DEG C, screw speed is 180~200r/min, extruding pelletization obtains photodiffusion material.
The addition of described absolute ethyl alcohol is 200~300mL.
Described emulsifying agent is one or both of emulsifier op-10, Emulsifier EL-40.
Described antioxidant is the one or more in antioxidant 1010, antioxidant 168, antioxidant 1076.
The present invention is compared with other method, and advantageous effects are：
The present invention is using vinyltrimethoxy silane as raw material, and hydrolytic condensation obtains organosilicon in the basic conditions, using organic
Vinyl in silicon reacts with 3- mercaptopropionic acids, so as to introduce element sulphur into organosilicon, improves the fire resistance of material, and not
The light transmittance of material is influenceed, then using the styrene-butadiene transparent impact resins of high transmission rate as raw material, can be made through divinylbenzene modification
Resin crosslink density increase, heat endurance is improved, and the present invention matches somebody with somebody using modified vinyl silicones microballoon as light diffusing agent with resin
Close to reach the light transmittance of regulation and control photodiffusion material and the purpose of mist degree, photodiffusion material of the invention can be taken into account high saturating simultaneously
Light rate and haze, while also having fire-retardant and long-acting heat-staple performance.
Embodiment
It is that 15% ammoniacal liquor and 8~10mL emulsifier op-10s are added to temperature to weigh 150~200mL mass fractions first
In the three-necked flask of meter and reflux, flask is moved into heat collecting type constant temperature magnetic apparatus, it is 50~60 to control agitator temperature
DEG C, agitator speed is 160~180r/min, and stirring is mixed after 3~5min, and 25~30mL second is added dropwise into flask while stirring
Alkenyl trimethoxy silane, it is 5~8mL/min to control rate of addition, after after completion of dropping, 2~3h of stirring reaction, question response knot
Beam, then it is 10% acetum to add 50~60mL mass fractions into flask, continues to stir after 5~10min, moves into centrifuge
In, with 4000~5000r/min rotating speed 15~20min of centrifugal treating, sediment is obtained, sediment is added to and fills 200
In the beaker of~300mL absolute ethyl alcohols, beaker is placed in supersonic oscillations instrument, with 40~45KHz frequency ultrasound scattered 15
~20min, obtains suspension, and 0.2~0.4g benzoin dimethylethers, 15~20min of stirring mixing are then added into suspension
Afterwards, 8~12mL3- mercaptopropionic acids are added, and beaker is moved into 30~40min of stirring reaction under uviol lamp, question response terminates,
Product is filtered, filter residue is obtained, and is that 75% ethanol is cleaned 3~5 times with mass fraction by filter residue, clean filter residue is placed in baking
In case, in drying 2~3h at 105 DEG C, modified vinyl silicones microballoon is obtained, is counted by weight, 50~60 parts are taken respectively
Transparent butadiene-styrene impact resin, 15~20 parts of modified vinyl silicones microballoons, 3~5 parts of divinylbenzenes and 8~12 parts are anti-oxidant
Agent 1010 is added in beaker, and flask is moved into heat collecting type constant temperature magnetic apparatus, and it is 70~80 DEG C to control agitator temperature, stirring
Device rotating speed is 220~250r/min, after 40~50min of stirring reaction, and product is transferred in double screw extruder, sets head
Temperature is 260~280 DEG C, in extruding pelletization under 180~200r/min, you can obtain photodiffusion material.
Example 1
It is that 15% ammoniacal liquor and 8mL emulsifier op-10s are added to thermometer and reflux to weigh 150mL mass fractions first
Three-necked flask in, flask is moved into heat collecting type constant temperature magnetic apparatus, it is 50 DEG C control agitator temperature, and agitator speed is
After 160r/min, stirring mixing 3min, 25mL vinyltrimethoxy silanes are added dropwise into flask while stirring, speed is added dropwise in control
Spend for 5mL/min, after after completion of dropping, stirring reaction 2h, question response terminates, then 50mL mass fractions are added into flask and be
10% acetum, continues to stir after 5min, moves into centrifuge, with 4000r/min rotating speed centrifugal treating 15min, sunk
Starch, sediment is added in the beaker for filling 200mL absolute ethyl alcohols, beaker is placed in supersonic oscillations instrument, with 40KHz
Frequency ultrasound disperse 15min, obtain suspension, then into suspension add 0.2g benzoin dimethylethers, stirring mixing
After 15min, 8mL3- mercaptopropionic acids are added, and beaker is moved into stirring reaction 30min under uviol lamp, question response terminates, will produced
Thing is filtered, and obtains filter residue, and is that 75% ethanol is cleaned 3 times with mass fraction by filter residue, and clean filter residue is placed in baking oven, in
2h is dried at 105 DEG C, modified vinyl silicones microballoon is obtained, counts by weight, 50 parts of styrene-butadiene transparent anti-impact trees are taken respectively
Fat, 15 parts of modified vinyl silicones microballoons, 3 parts of divinylbenzenes and 8 parts of antioxidant 1010s are added in beaker, by flask
Move into heat collecting type constant temperature magnetic apparatus, it is 70 DEG C to control agitator temperature, and agitator speed is 220r/min, stirring reaction
After 40min, product is transferred in double screw extruder, head temperature is set as 260 DEG C, in extruding pelletization under 180r/min,
It can obtain photodiffusion material.
LED lamp cover mould is prepared by required specification first, the photodiffusion material for then preparing the present invention is in injection machine
In press mould once injection moulding, control injection machine rotating speed for 40r/min, barrel temperature is：210 DEG C of leading portion, stage casing 180
DEG C, 160 DEG C of back segment；Mold temperature is 60 DEG C, and nozzle temperature is 220 DEG C, and injection pressure is 90MPa, and it is 5s to control injection time,
Dwell time is 10s, and cool time is 25s, is waited after the completion of being molded, and through assembling, test step is packaged into finished product.
Example 2
It is that 15% ammoniacal liquor and 9mL emulsifier op-10s are added to thermometer and reflux to weigh 180mL mass fractions first
Three-necked flask in, flask is moved into heat collecting type constant temperature magnetic apparatus, it is 55 DEG C control agitator temperature, and agitator speed is
After 170r/min, stirring mixing 4min, 28mL vinyltrimethoxy silanes are added dropwise into flask while stirring, speed is added dropwise in control
Spend for 7mL/min, after after completion of dropping, stirring reaction 3h, question response terminates, then 55mL mass fractions are added into flask and be
10% acetum, continues to stir after 8min, moves into centrifuge, with 4500r/min rotating speed centrifugal treating 18min, sunk
Starch, sediment is added in the beaker for filling 250mL absolute ethyl alcohols, beaker is placed in supersonic oscillations instrument, with 43KHz
Frequency ultrasound disperse 18min, obtain suspension, then into suspension add 0.3g benzoin dimethylethers, stirring mixing
After 18min, 10mL3- mercaptopropionic acids are added, and beaker is moved into stirring reaction 35min under uviol lamp, question response terminates, will
Product is filtered, and obtains filter residue, and is that 75% ethanol is cleaned 4 times with mass fraction by filter residue, and clean filter residue is placed in baking oven,
In drying 3h at 105 DEG C, modified vinyl silicones microballoon is obtained, is counted by weight, 55 parts of styrene-butadiene transparent anti-impacts are taken respectively
Resin, 18 parts of modified vinyl silicones microballoons, 4 parts of divinylbenzenes and 10 parts of antioxidant 1010s are added in beaker, will
Flask is moved into heat collecting type constant temperature magnetic apparatus, and it is 75 DEG C to control agitator temperature, and agitator speed is 230r/min, stirring reaction
After 45min, product is transferred in double screw extruder, head temperature is set as 270 DEG C, in extruding pelletization under 190r/min,
It can obtain photodiffusion material.
LED lamp cover mould is prepared by required specification first, the photodiffusion material for then preparing the present invention is in injection machine
In press mould once injection moulding, control injection machine rotating speed for 48r/min, barrel temperature is：220 DEG C of leading portion, stage casing 190
DEG C, 170 DEG C of back segment；Mold temperature is 70 DEG C, and nozzle temperature is 225 DEG C, and injection pressure is 90MPa, and it is 6s to control injection time,
Dwell time is 13s, and cool time is 30s, is waited after the completion of being molded, and through assembling, test step is packaged into finished product.
Example 3
It is that 15% ammoniacal liquor and 10mL emulsifier op-10s are added to thermometer and reflux to weigh 200mL mass fractions first
Three-necked flask in, flask is moved into heat collecting type constant temperature magnetic apparatus, it is 60 DEG C control agitator temperature, and agitator speed is
After 180r/min, stirring mixing 5min, 30mL vinyltrimethoxy silanes are added dropwise into flask while stirring, speed is added dropwise in control
Spend for 8mL/min, after after completion of dropping, stirring reaction 3h, question response terminates, then 60mL mass fractions are added into flask and be
10% acetum, continues to stir after 10min, moves into centrifuge, with 5000r/min rotating speed centrifugal treating 20min, obtain
Sediment, sediment is added in the beaker for filling 300mL absolute ethyl alcohols, beaker is placed in supersonic oscillations instrument, with
45KHz frequency ultrasound disperses 20min, obtains suspension, and 0.4g benzoin dimethylethers are then added into suspension, and stirring is mixed
Close after 20min, add 12mL3- mercaptopropionic acids, and beaker is moved into stirring reaction 40min under uviol lamp, question response terminates,
Product is filtered, filter residue is obtained, and is that 75% ethanol is cleaned 5 times with mass fraction by filter residue, clean filter residue is placed in baking oven
In, in drying 3h at 105 DEG C, modified vinyl silicones microballoon is obtained, is counted by weight, take 60 parts of styrene-butadiene transparents to resist respectively
Resin, 20 parts of modified vinyl silicones microballoons, 5 parts of divinylbenzenes and 12 parts of antioxidant 1010s are rushed to be added in beaker,
Flask is moved into heat collecting type constant temperature magnetic apparatus, it is 80 DEG C to control agitator temperature, and agitator speed is 250r/min, stirring is anti-
Answer after 50min, product is transferred in double screw extruder, set head temperature as 280 DEG C, made in extrusion under 200r/min
Grain, you can obtain photodiffusion material.
LED lamp cover mould is prepared by required specification first, the photodiffusion material for then preparing the present invention is in injection machine
In press mould once injection moulding, control injection machine rotating speed for 55r/min, barrel temperature is：230 DEG C of leading portion, stage casing 200
DEG C, 180 DEG C of back segment；Mold temperature is 80 DEG C, and nozzle temperature is 230 DEG C, and injection pressure is 90MPa, and it is 8s to control injection time,
Dwell time is 15s, and cool time is 35s, is waited after the completion of being molded, and through assembling, test step is packaged into finished product.
Photodiffusion material obtained by the embodiment of the present invention is detected with light diffusing polycarbonate material, as a result such as the institute of table one
Show.
Table one：
| Example | Light transmittance（%） | Mist degree（%） | Anti-flammability |
| Light diffusing polycarbonate material | 85.3 | 90.86 | 135 DEG C, deformation |
| Example 1 | 86.2 | 93.2 | It is 256 DEG C, unchanged |
| Example 2 | 87.9 | 95.1 | It is 260 DEG C, unchanged |
| Example 3 | 89.1 | 96.0 | It is 265 DEG C, unchanged |
As seen from the above table, photodiffusion material of the present invention can have both high transmission rate and haze simultaneously, and with preferably anti-flammability
Energy.
Claims (4)
1. a kind of photodiffusion material, it is characterised in that include the raw material of following parts by weight：
50~60 parts of transparent butadiene-styrene impact resin, 15~20 parts of modified vinyl silicones microballoon, 3~5 parts of divinylbenzene and
Antioxidant；
Described modified vinyl silicones microballoon is obtained by the reaction of following raw material：150~200mL mass fractions are 15%
Ammoniacal liquor, 8~10mL emulsifying agents, 25~30mL vinyltrimethoxy silanes, 50~60mL mass fractions be 10% acetum,
0.2~0.4g benzoin dimethylethers, 8~12mL3- mercaptopropionic acids；
Specific preparation method is as follows：
（1）The synthesis of modified vinyl silicones microballoon：After 50~60 DEG C mix ammoniacal liquor, emulsifier for mixing, then second is added dropwise
Alkenyl trimethoxy silane, regulation mixing speed is 160~180r/min, and insulated and stirred reacts 2~3h, after reaction terminates, then
Acetum is added, is centrifuged after stirring mixing, obtains sediment, ultrasonic disperse after sediment is mixed with absolute ethyl alcohol,
Suspension is obtained, 30~40min of stirring reaction under benzoin dimethylether and 3- mercaptopropionic acids, ultraviolet light is added into suspension
Afterwards, filter, obtain filter residue, filter residue is washed with alcohol, dried, modified vinyl silicones microballoon is produced；
（2）The preparation of photodiffusion material：At 70~80 DEG C by transparent butadiene-styrene impact resin, modified vinyl silicones, divinyl
After base benzene, 40~50min of antioxidant stirring reaction, product is obtained, product is placed in double screw extruder, set head temperature
Spend for 260~280 DEG C, screw speed is 180~200r/min, extruding pelletization obtains photodiffusion material.
2. a kind of photodiffusion material according to claim 1, it is characterised in that the addition of described absolute ethyl alcohol is
200~300mL.
3. a kind of photodiffusion material according to claim 1, it is characterised in that described emulsifying agent be polyoxyethylene nonylphenol ether-
10th, one or both of Emulsifier EL-40.
4. a kind of photodiffusion material according to claim 1, it is characterised in that described antioxidant is antioxidant
1010th, the one or more in antioxidant 168, antioxidant 1076.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110387018A (en) * | 2019-07-19 | 2019-10-29 | 常州大学 | A kind of preparation method of sulfur-bearing polysiloxanes/polymethyl methacrylate light scattering composite material |
| CN111117201A (en) * | 2020-02-25 | 2020-05-08 | 潮州明园新材料有限公司 | High-hardness PC (polycarbonate) photodiffusion material and preparation method thereof |
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| CN105968769A (en) * | 2016-06-22 | 2016-09-28 | 上海树普新材料科技有限公司 | Transparent photodiffusion material with heat conduction function and preparation method thereof |
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| CN103030752A (en) * | 2011-09-29 | 2013-04-10 | 比亚迪股份有限公司 | Polymer microsphere, preparation method and application of polymer microsphere, composition, light diffusion plate or light diffusion film, lamp and backlight module |
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| CN103073805A (en) * | 2013-01-21 | 2013-05-01 | 东莞市欣隆光电材料有限公司 | High impact strength photodiffusion polystyrene material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110387018A (en) * | 2019-07-19 | 2019-10-29 | 常州大学 | A kind of preparation method of sulfur-bearing polysiloxanes/polymethyl methacrylate light scattering composite material |
| CN110387018B (en) * | 2019-07-19 | 2021-12-21 | 常州大学 | Preparation method of sulfur-containing polysiloxane/polymethyl methacrylate light scattering composite material |
| CN111117201A (en) * | 2020-02-25 | 2020-05-08 | 潮州明园新材料有限公司 | High-hardness PC (polycarbonate) photodiffusion material and preparation method thereof |
| CN111117201B (en) * | 2020-02-25 | 2021-11-05 | 潮州明园新材料有限公司 | High-hardness PC (polycarbonate) photodiffusion material and preparation method thereof |
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| CN107266807B (en) | 2019-04-30 |
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