CN109354854A - A kind of light diffusion pc material and preparation method thereof - Google Patents
A kind of light diffusion pc material and preparation method thereof Download PDFInfo
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- CN109354854A CN109354854A CN201811188839.7A CN201811188839A CN109354854A CN 109354854 A CN109354854 A CN 109354854A CN 201811188839 A CN201811188839 A CN 201811188839A CN 109354854 A CN109354854 A CN 109354854A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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Abstract
The invention discloses a kind of light to spread pc material, it is composed of the following raw materials by weight: polycarbonate 100-130,2-mercaptobenzimidazole 1-2, ethyl orthosilicate 20-30, dibasic lead phosphite 0.1-0.2, styrene 30-40, cumyl peroxide 1-2, sodium alkyl benzene sulfonate 1-2, epoxy prapanol 3-5, silane coupling agent kh5502-4, catalyst 0.1-0.13, the present invention is by by silica solution and polystyrene blend, collaboration well can be played and improve light diffusing energy, to improve the comprehensive performance of finished-product material.
Description
Technical field
The invention belongs to Material Fields, and in particular to a kind of light diffusion pc material and preparation method thereof.
Background technique
Photodiffusion material refers to that the optical material with certain mist degree and light transmittance, this kind of material can be by points, linear light source
The neck such as it is converted into line, area source, and is widely used in various billboards, display case, illuminating engineering and LCD backlight
Domain；Currently, the preparation of photodiffusion material is mainly adulterated different with matrix refractive index inorganic or is had in transparent matrix material
Machine light diffusing agent particle, to keep light existing at the interface and internal generation reflection and refraction etc. of matrix and light diffusing agent
As to achieve the purpose that even light.Light diffusing agent is generally spherical or almost spherical particulate, can be divided into inorganic light diffusion
Agent and organic light diffusing agent two major classes, inorganic light diffusing agent mainly have barium sulfate, calcium carbonate, titanium dioxide etc., organic light diffusion
Agent includes polystyrene, polymethyl methacrylate and organic siliconresin etc., and for inorganic light diffusing agent, organic light expands
Preferably, loss when light passes through is less, can preferably achieve the purpose that even light and light transmission for the transparency of powder；
However currently, be only extremely difficult to higher light transmission requirement with organic light diffusing agent, and if with inorganic light diffusing agent
It is blended to use, since inorganic particulate surface is more sharp, is easy to scratch photodiffusion material, causes its optical property impacted, and by
It is easy to be formed in pc matrix in inorganic light diffusing agent and reunite, the mechanical stability that will cause finished-product material in this way is low.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of light diffusion pc material and its preparations
Method.
To achieve the above object, the invention adopts the following technical scheme:
A kind of light diffusion pc material, it is composed of the following raw materials by weight:
Polycarbonate 100-130,2-mercaptobenzimidazole 1-2, ethyl orthosilicate 20-30, dibasic lead phosphite 0.1-
0.2, styrene 30-40, cumyl peroxide 1-2, sodium alkyl benzene sulfonate 1-2, epoxy prapanol 3-5, silane coupling agent
Kh5502-4, catalyst 0.1-0.13.
The catalyst is stannous octoate.
A kind of preparation method of light diffusion pc material, comprising the following steps:
(1) cumyl peroxide is taken, is added in the dehydrated alcohol of 10-17 times of its weight, stirs evenly, obtain initiator
Solution；
(2) silane coupling agent kh550 is taken, is added in the deionized water of 30-48 times of its weight, stirs evenly, alkane is added
Base benzene sulfonic acid sodium salt, increasing temperature is 50-60 DEG C, insulated and stirred 10-20 minutes, obtains silane dispersion fluid；
(3) 2-mercaptobenzimidazole is taken, is mixed with epoxy prapanol, is added in the toluene of 4-7 times of mixture weight, is stirred
Uniformly, styrene is added, increasing temperature is 50-55 DEG C, insulated and stirred 1-2 hours, toluene is distilled off, obtains modified monomer；
(4) above-mentioned modified monomer is taken, is added in the dehydrated alcohol of 5-8 times of its weight, stirs evenly, be sent to reaction kettle
In, it is passed through nitrogen, adjusting temperature of reaction kettle is 60-70 DEG C, and above-mentioned initiator solution is added, insulated and stirred 4-6 hours, discharges cold
But, modified polystyrene solution is obtained；
(5) ethyl orthosilicate is taken, is added in above-mentioned silane dispersion fluid, mixes, stirs with above-mentioned modified polystyrene solution
Reaction 5-7 hours is mixed, increasing temperature is 110-130 DEG C, catalyst is added, insulated and stirred 2-3 hours, filters, filter cake is washed,
10-13 hours dry at 90-100 DEG C of vacuum, discharging cooling obtains modified light diffusing agent；
(6) above-mentioned modified light diffusing agent is taken, mixes, stirs evenly with polycarbonate, dibasic lead phosphite, is sent to crowded
Out in machine, melting extrusion is cooling to spread pc material to get the light.
Advantages of the present invention:
The present invention uses epoxy prapanol to handle styrene first, is subsequently dispersed in ethanol solution, under initiator effect
Polymerization, obtains epoxy-modified modified polystyrene solution, then using ethyl orthosilicate as presoma, containing silane coupling agent
It is hydrolyzed in the aqueous solution of kh550, epoxy-modified modified polystyrene solution is introduced in hydrolytic process, passes through urging for amino
Change effect, promotes epoxy cross-linking, so as to improve dispersion compatibility of the silica solution between polystyrene, improves modified light diffusion
The stability and mechanical strength of agent, the present invention are improved by that by silica solution and polystyrene blend, can play collaboration well
Light diffusing energy, to improve the comprehensive performance of finished-product material.
Specific embodiment
Embodiment 1
A kind of light diffusion pc material, it is composed of the following raw materials by weight:
Polycarbonate 130,2-mercaptobenzimidazole 2, ethyl orthosilicate 30, dibasic lead phosphite 0.2, styrene 40,
Cumyl peroxide 2, sodium alkyl benzene sulfonate 2, epoxy prapanol 5, silane coupling agent kh5504, catalyst 0.13.
The catalyst is stannous octoate.
A kind of preparation method of light diffusion pc material, comprising the following steps:
(1) cumyl peroxide is taken, is added in the dehydrated alcohol of 17 times of its weight, is stirred evenly, it is molten to obtain initiator
Liquid；
(2) silane coupling agent kh550 is taken, is added in the deionized water of 48 times of its weight, stirs evenly, alkylbenzene is added
Sodium sulfonate, increasing temperature is 60 DEG C, insulated and stirred 20 minutes, obtains silane dispersion fluid；
(3) 2-mercaptobenzimidazole is taken, is mixed with epoxy prapanol, is added in 7 times of mixture weight of toluene, stirring is equal
It is even, styrene is added, increasing temperature is 55 DEG C, insulated and stirred 2 hours, toluene is distilled off, obtains modified monomer；
(4) above-mentioned modified monomer is taken, is added in the dehydrated alcohol of 8 times of its weight, is stirred evenly, be sent to reaction kettle
In, it is passed through nitrogen, adjusting temperature of reaction kettle is 60 DEG C, above-mentioned initiator solution is added, insulated and stirred 6 hours, discharging cooling obtained
Modified polystyrene solution；
(5) ethyl orthosilicate is taken, is added in above-mentioned silane dispersion fluid, mixes, stirs with above-mentioned modified polystyrene solution
Reaction 7 hours is mixed, increasing temperature is 130 DEG C, and catalyst is added, insulated and stirred 3 hours, filters, filter cake is washed, vacuum 100
13 hours dry at DEG C, discharging cooling obtains modified light diffusing agent；
(6) above-mentioned modified light diffusing agent is taken, mixes, stirs evenly with polycarbonate, dibasic lead phosphite, is sent to crowded
Out in machine, melting extrusion is cooling to spread pc material to get the light.
Embodiment 2
A kind of light diffusion pc material, it is composed of the following raw materials by weight:
Polycarbonate 100,2-mercaptobenzimidazole 1, ethyl orthosilicate 20, dibasic lead phosphite 0.1, styrene 30,
Cumyl peroxide 1, sodium alkyl benzene sulfonate 1, epoxy prapanol 3, silane coupling agent kh5502, catalyst 0.1.
The catalyst is stannous octoate.
A kind of preparation method of light diffusion pc material, comprising the following steps:
(1) cumyl peroxide is taken, is added in the dehydrated alcohol of 10 times of its weight, is stirred evenly, it is molten to obtain initiator
Liquid；
(2) silane coupling agent kh550 is taken, is added in the deionized water of 30 times of its weight, stirs evenly, alkylbenzene is added
Sodium sulfonate, increasing temperature is 50 DEG C, insulated and stirred 10 minutes, obtains silane dispersion fluid；
(3) 2-mercaptobenzimidazole is taken, is mixed with epoxy prapanol, is added in 4 times of mixture weight of toluene, stirring is equal
It is even, styrene is added, increasing temperature is 50 DEG C, insulated and stirred 1 hour, toluene is distilled off, obtains modified monomer；
(4) above-mentioned modified monomer is taken, is added in the dehydrated alcohol of 5 times of its weight, is stirred evenly, be sent to reaction kettle
In, it is passed through nitrogen, adjusting temperature of reaction kettle is 60 DEG C, above-mentioned initiator solution is added, insulated and stirred 4 hours, discharging cooling obtained
Modified polystyrene solution；
(5) ethyl orthosilicate is taken, is added in above-mentioned silane dispersion fluid, mixes, stirs with above-mentioned modified polystyrene solution
Reaction 5 hours is mixed, increasing temperature is 110 DEG C, and catalyst is added, insulated and stirred 2 hours, filters, filter cake is washed, 90 DEG C of vacuum
Lower drying 10 hours, discharging cooling, obtains modified light diffusing agent；
(6) above-mentioned modified light diffusing agent is taken, mixes, stirs evenly with polycarbonate, dibasic lead phosphite, is sent to crowded
Out in machine, melting extrusion is cooling to spread pc material to get the light.
Comparative example 1:
By 100 parts by weight of polycarbonate, 10 parts by weight of polystyrene, mixing is sent in extruder, melting extrusion is cold
But；
Comparative example 2:
By 100 parts by weight of polycarbonate, 0 parts by weight of silica 1, mixing is sent in extruder, melting extrusion is cold
But；
Light transmittance and mist degree are tested:
Sample is made to the film of 50 μ m-thicks using the method for hot pressing, using haze meter testing film sample light transmittance and
Mist degree, each sample average are tested 10 times, and final result is averaged, testing standard GB/T2410-2008；
The light of embodiment 1 spreads pc material:
Light transmittance: 82%, mist degree 89%；
The light of embodiment 2 spreads pc material:
Light transmittance: 83%, mist degree 88%；
The material of comparative example 1:
Light transmittance: 70%, mist degree 77%；
The material of comparative example 2:
Light transmittance: 63%, mist degree 72%.
Stability test:
The initial thermal degradation temperature of the light diffusion pc material of the embodiment of the present invention 1 is 465 DEG C；
The initial thermal degradation temperature of the light diffusion pc material of the embodiment of the present invention 2 is 451 DEG C；
The initial thermal degradation temperature of comparative example 1pc material is 405 DEG C；
The initial thermal degradation temperature of comparative example 2pc material is 394 DEG C.
Claims (3)
1. a kind of light spreads pc material, which is characterized in that it is composed of the following raw materials by weight:
Polycarbonate 100-130,2-mercaptobenzimidazole 1-2, ethyl orthosilicate 20-30, dibasic lead phosphite 0.1-0.2,
Styrene 30-40, cumyl peroxide 1-2, sodium alkyl benzene sulfonate 1-2, epoxy prapanol 3-5, silane coupling agent kh550 2-
4, catalyst 0.1-0.13.
2. a kind of light according to claim 1 spreads pc material, which is characterized in that the catalyst is stannous octoate.
3. a kind of preparation method of light diffusion pc material as described in claim 1, which comprises the following steps:
(1) cumyl peroxide is taken, is added in the dehydrated alcohol of 10-17 times of its weight, stirs evenly, it is molten to obtain initiator
Liquid；
(2) silane coupling agent kh550 is taken, is added in the deionized water of 30-48 times of its weight, stirs evenly, alkylbenzene is added
Sodium sulfonate, increasing temperature is 50-60 DEG C, insulated and stirred 10-20 minutes, obtains silane dispersion fluid；
(3) 2-mercaptobenzimidazole is taken, is mixed with epoxy prapanol, is added in the toluene of 4-7 times of mixture weight, stirring is equal
It is even, styrene is added, increasing temperature is 50-55 DEG C, insulated and stirred 1-2 hours, toluene is distilled off, obtains modified monomer；
(4) above-mentioned modified monomer is taken, is added in the dehydrated alcohol of 5-8 times of its weight, stirs evenly, be sent in reaction kettle,
It is passed through nitrogen, adjusting temperature of reaction kettle is 60-70 DEG C, and above-mentioned initiator solution is added, and insulated and stirred 4-6 hours, discharging cooled down,
Obtain modified polystyrene solution；
(5) ethyl orthosilicate is taken, is added in above-mentioned silane dispersion fluid, is mixed with above-mentioned modified polystyrene solution, stirring is anti-
It answers 5-7 hours, increasing temperature is 110-130 DEG C, and catalyst is added, insulated and stirred 2-3 hours, filters, filter cake is washed, vacuum
10-13 hours dry at 90-100 DEG C, discharging cooling obtains modified light diffusing agent；
(6) above-mentioned modified light diffusing agent is taken, mixes, stirs evenly with polycarbonate, dibasic lead phosphite, be sent to extruder
In, melting extrusion is cooling to spread pc material to get the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188839.7A CN109354854B (en) | 2018-10-12 | 2018-10-12 | Light diffusion pc material and preparation method thereof |
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| CN201811188839.7A CN109354854B (en) | 2018-10-12 | 2018-10-12 | Light diffusion pc material and preparation method thereof |
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| CN109354854A true CN109354854A (en) | 2019-02-19 |
| CN109354854B CN109354854B (en) | 2020-10-30 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004217903A (en) * | 2002-12-24 | 2004-08-05 | Teijin Chem Ltd | Aromatic polycarbonate resin composition |
| CN105733233A (en) * | 2014-12-11 | 2016-07-06 | 广州市港洋达塑料有限公司 | PC optical material filtering biological blue light and being halogen-free and flame retarding, and preparation and application thereof |
| CN108342065A (en) * | 2017-05-22 | 2018-07-31 | 安徽旭升新材料有限公司 | A kind of high-effect PC photodiffusion materials of anti-flammability and preparation method thereof |
-
2018
- 2018-10-12 CN CN201811188839.7A patent/CN109354854B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004217903A (en) * | 2002-12-24 | 2004-08-05 | Teijin Chem Ltd | Aromatic polycarbonate resin composition |
| CN105733233A (en) * | 2014-12-11 | 2016-07-06 | 广州市港洋达塑料有限公司 | PC optical material filtering biological blue light and being halogen-free and flame retarding, and preparation and application thereof |
| CN108342065A (en) * | 2017-05-22 | 2018-07-31 | 安徽旭升新材料有限公司 | A kind of high-effect PC photodiffusion materials of anti-flammability and preparation method thereof |
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| CN109354854B (en) | 2020-10-30 |
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