CN105131165B - A kind of preparation method of polystyrene light diffusing agent - Google Patents
A kind of preparation method of polystyrene light diffusing agent Download PDFInfo
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- CN105131165B CN105131165B CN201510628802.1A CN201510628802A CN105131165B CN 105131165 B CN105131165 B CN 105131165B CN 201510628802 A CN201510628802 A CN 201510628802A CN 105131165 B CN105131165 B CN 105131165B
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- light diffusing
- diffusing agent
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Abstract
The invention provides a kind of preparation method of polystyrene light diffusing agent：In a kettle., a certain amount of dispersant is added, initiator, styrene, divinylbenzene, acetoacetate methacrylic acid glycol ester, methacrylic acid trimethylsilyl group, CTFE carries out polymerisation, obtains polystyrene light diffusing agent.
Description
Technical field
The present invention relates to a kind of preparation method of light diffusing agent, particularly a kind of preparation side of polystyrene light diffusing agent
Method.
Background technology
Photodiffusion material refers to the optical material with certain light transmittance and mist degree, can be converted into spot light and line source
Line source and area source, reaching makes the effect of incident beam optical power detection, is widely used in FPD, illuminating engineering,
Laser, the technical field such as projection imaging.Nowadays, with the maturation of high power LED chip manufacturing technology, shone in automobile
The fields such as bright, signal lamp, outdoor display screen and indoor and outdoor lighting are used widely, the demand of LED light diffusion particle
Increase sharply.
CN101849201 can assign the light diffusing and light transmission better than existing spherical resin particle there is provided a kind of
Property, improve the light diffusing agent of the performance of final products such as screen.The light diffusing agent of the present invention, which is included in surface, has multiple pits
Spherical resin particle, the transparency, optics physical property are excellent, so using the optical diffusion film of the light diffusing agent there is excellent light to expand
Dissipate property and total light transmission.So being to expand even in some position it was observed that also evenly meeting good light in the case of scattered light
The optical diffusion film of property and total light transmission is dissipated, the backlight of liquid crystal display, rear projection screen, ligthing paraphernalia, lamp decoration is can be widely applied for
Billboard etc..
CN103193915 is related to a kind of light diffusing agent, PMMA light diffusing sheets and preparation method thereof.The light diffusing agent is benzene second
The random copolymer of alkene and methacryloxypropyl isobutyl group polyhedral oligomeric silsesquioxane.The composition of PMMA light diffusing sheets and
Weight/mass percentage composition is：Polymethyl methacrylate 97.0~99.5%, light diffusing agent 0.5~3.0%, the matter of above each component
It is 100% to measure percentage composition.The refractive index and PMMA refractive index of styrene content and MAiBuPOSS compositions in light diffusing agent
Difference, when light passes through material, light can become light soft by repeatedly refraction finally by the light of base material.
The light diffusing agent of existing known technology disperses bad in the base, there is agglomeration.Need to be surface-treated with
Guarantee is uniformly dispersed, to improve light dispersiveness.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of polystyrene light diffusing agent and preparation method thereof.
In a kettle., pure water is squeezed into, polymerization inhibitor adds a certain amount of dispersant, initiator, styrene, acetoacetate
Methacrylic acid glycol ester, methacrylic acid trimethylsilyl group, CTFE participates in polymerization, is warming up to reaction temperature, treats
Reaction terminates, and centrifuges, and dries.Obtain product of the present invention.
The present invention provides a kind of preparation method of polystyrene light diffusing agent, is realized by following steps：
The preparation of step 1. aqueous phase
By weight, 1000 parts of water are added in a kettle., and 0.5-2 parts of dispersants stir；
The dispersant is selected from polyvinyl alcohol, gelatin or hydroxymethyl cellulose etc., preferably polyvinyl alcohol.
The preparation of step 2. oil phase
By weight, added in 100 parts of styrene, 2-10 parts of divinylbenzene monomers and account for monomer total amount percentage and contain
The acetoacetate methacrylic acid glycol ester of amount 0.5~2%, accounts for the metering system of monomer total amount degree 0.5~2%
Sour trimethylsilyl group, the CTFE for accounting for monomer total amount degree 0.5~2% participates in polymerization, adds 0.5~2 part
Peroxide initiator stirs；
Step 3. polymerisation
The oil-phase solution prepared in step 2 is added in step 1 equipped with the reactor for having prepared aqueous phase, stirred
Mix, then at 70-90 DEG C, react 10-20h, reaction terminates rear blowing, wash obtained polymerization Archon filtering, drying is produced
Product.
Acetoacetate methacrylic acid glycol ester, molecular formula C10H14O5。
Methacrylic acid trimethylsilyl group, molecular formula C7H14O2Si。
The preferred benzoyl peroxide of initiator, the acetoacetate methacrylic acid glycol ester is commercially available prod,
The product produced such as Shanghai Mai Ruier chemical technologies Co., Ltd.The methacrylic acid trimethylsilyl group is commercially available prod, such as
The product of the base Industrial Co., Ltd. of Shanghai one production.The CTFE is commercially available prod.As Beijing Hua Tongrui speeds material supply section
The product of skill Co., Ltd production.
Beneficial effects of the present invention：
Existing light diffusing agent disperses bad in the base, there is agglomeration.Need to be surface-treated to ensure to disperse
Uniformly, it is dispersed to improve light.The light diffusing particles being modified by surface aggregate are without the shortcomings of inequality, reunion is disperseed, thoroughly
Light rate is higher.
Embodiment
Following examples are only to further illustrate the present invention, are not limitation the scope of protection of the invention.
The present invention provides a kind of polystyrene light diffusing agent and preparation method thereof, is realized by following steps：
Embodiment 1
The preparation of step 1. aqueous phase
1000kg water is added in 2000L autoclaves, 1kg polyvinyl alcohol stirs；
The preparation of step 2. oil phase
In 500L reactors, by 100kg styrene, 4kg divinylbenzenes, 1kg acetoacetate methacrylic acids second two
Alcohol ester, 1kg methacrylic acid trimethylsilyl groups add 0.08kg benzoyl peroxides, stirred；
Step 3. polymerisation
The oil-phase solution prepared in step 2 is added in step 1 equipped with the autoclave for having prepared aqueous phase, is passed through
1kg CTFEs, then from 80 DEG C of reaction 14h, reaction is centrifuged after terminating, and is dried to obtain product.Numbering is SX-1.
Embodiment 2
The preparation of step 1. aqueous phase
1000kg water is added in 2000L autoclaves, 0.5kg polyvinyl alcohol stirs；
The preparation of step 2. oil phase
In 500L reactors, by 100kg styrene, 0.5kg divinylbenzenes, 0.5kg acetoacetate methacrylic acids
Glycol ester, 0.5kg methacrylic acid trimethylsilyl groups add 0.5kg benzoyl peroxides, stirred；
Step 3. polymerisation
The oil-phase solution prepared in step 2 is added in step 1 equipped with the autoclave for having prepared aqueous phase, is passed through
0.5kg CTFEs, then from 70 DEG C of reaction 20h, reaction is centrifuged after terminating, and is dried to obtain product.Numbering is SX-2.
Embodiment 3
The preparation of step 1. aqueous phase
1000kg water is added in 2000L autoclaves, 2kg polyvinyl alcohol stirs.
The preparation of step 2. oil phase
In 500L reactors, by 100kg styrene, 10kg divinylbenzenes, 2kg acetoacetate methacrylic acids second two
Alcohol ester, 2kg methacrylic acid trimethylsilyl groups add 2kg benzoyl peroxides, stirred.
Step 3. polymerisation
The oil-phase solution prepared in step 2 is added in step 1 equipped with the autoclave for having prepared aqueous phase, is passed through
2kg CTFEs, then from 90 DEG C of reaction 10h, reaction is centrifuged after terminating, and is dried to obtain product.Numbering is SX-3.
Comparative example 1
Acetoacetate methacrylic acid glycol ester is added without, production code member is SX-4.
Comparative example 2
Methacrylic acid trimethylsilyl group is added without, production code member is SX-5.
Embodiment 4
Obtained 1 part of light diffusing particles in embodiment 1-3 and comparative example 1,0.3 part of antioxidant is divided in advance with diffusant
Dissipate, add after 100 parts of PC particles, be transferred in low speed mixer and stir, after being well mixed with double screw extruder melt blending,
Granulation, most afterwards through injection machine injection molding light diffusing sheet.
Optic test
Using light transmittance/mist degree tester (EEL57D, Shanghai precision instrument Co., Ltd), surveyed by GB/T2410-2008
Examination.
| Sample number into spectrum | Light transmittance % |
| SX-1 | 86 |
| SX-2 | 83 |
| SX-3 | 87 |
| SX-4 | 77 |
| SX-5 | 79 |
Claims (1)
1. a kind of preparation method of polystyrene light diffusing agent, it is characterised in that comprise the following steps：
The preparation of step 1. aqueous phase
By weight, 1000 parts of water are added in a kettle., and 0.5-2 parts of dispersants stir；
The preparation of step 2. oil phase
By weight, added in 100 parts of styrene, 2-10 parts of divinylbenzene monomers and account for monomer total amount degree
0.5~2% acetoacetate methacrylic acid glycol ester, accounts for the methacrylic acid of monomer total amount degree 0.5~2%
Trimethylsilyl group, the CTFE for accounting for monomer total amount degree 0.5~2% participates in polymerization, adds 0.5~2 part of mistake
Peroxide initiator stirs；
Step 3. polymerisation
The oil-phase solution prepared in step 2 is added in step 1 equipped with the reactor for having prepared aqueous phase, is stirred, so
Afterwards at 70-90 DEG C, 10-20h is reacted, reaction terminates rear blowing, wash obtained polymerization Archon filtering, drying obtains product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510628802.1A CN105131165B (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of polystyrene light diffusing agent |
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| CN201510628802.1A CN105131165B (en) | 2015-09-24 | 2015-09-24 | A kind of preparation method of polystyrene light diffusing agent |
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| CN105131165A CN105131165A (en) | 2015-12-09 |
| CN105131165B true CN105131165B (en) | 2017-09-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105504129B (en) * | 2015-12-18 | 2018-05-15 | 王金明 | A kind of preparation of polystyrene light diffusing agent |
| CN109265595B (en) * | 2018-07-17 | 2021-02-19 | 北京化工大学 | Porous crosslinked polystyrene light diffusant, PC light diffusion plate and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898348A (en) * | 2003-12-23 | 2007-01-17 | 3M创新有限公司 | Aqueous composition of an oligomeric fluorosilane and use thereof for surface treatment of optical elements |
| CN102898582A (en) * | 2011-07-26 | 2013-01-30 | 比亚迪股份有限公司 | Micron-sized polymer microsphere, and preparation method and light diffusion plate thereof |
| 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 |
| CN103193915A (en) * | 2013-03-26 | 2013-07-10 | 石狮市天生化工有限公司 | Light diffusing agent, PMMA (polymethyl methacrylate) light diffusing plate and manufacturing method thereof |
-
2015
- 2015-09-24 CN CN201510628802.1A patent/CN105131165B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898348A (en) * | 2003-12-23 | 2007-01-17 | 3M创新有限公司 | Aqueous composition of an oligomeric fluorosilane and use thereof for surface treatment of optical elements |
| CN102898582A (en) * | 2011-07-26 | 2013-01-30 | 比亚迪股份有限公司 | Micron-sized polymer microsphere, and preparation method and light diffusion plate thereof |
| 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 |
| CN103193915A (en) * | 2013-03-26 | 2013-07-10 | 石狮市天生化工有限公司 | Light diffusing agent, PMMA (polymethyl methacrylate) light diffusing plate and manufacturing method thereof |
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