CN104817828A - Special light diffusion material for light-diffusion PET (polyethylene terephthalate) sheet and manufacturing method thereof - Google Patents
Special light diffusion material for light-diffusion PET (polyethylene terephthalate) sheet and manufacturing method thereof Download PDFInfo
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- CN104817828A CN104817828A CN201510214516.0A CN201510214516A CN104817828A CN 104817828 A CN104817828 A CN 104817828A CN 201510214516 A CN201510214516 A CN 201510214516A CN 104817828 A CN104817828 A CN 104817828A
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Abstract
The invention discloses a special light diffusion material for a light-diffusion PET (polyethylene terephthalate) sheet and a manufacturing method thereof. The special light diffusion material comprises, by weight, 97.5-99.5% of PET, 0.5-1.5% of light diffuser, 0.1-0.5% of nanosilicon dioxide and 0.1-0.5% of antioxidant 300. The light-diffusion PET sheet manufactured by the light diffusion material has the advantages of excellent light transmission and light diffusion and high haze, diffusivity is up to 80-90%, light transmittance is up to 88-92%, and haze is up to 80-90%. Bright spots, lattice points and strings of the sheet and imbalance and the like can be reduced. Meanwhile, the special light diffusion material has good weather fastness and can be applied to LED lamp tubes and lampshades.
Description
[technical field]
The present invention relates to a kind of light diffusion PP Pipe Compound and preparation method thereof, particularly relate to a kind of light diffusion PET sheet and use up diffusion PP Pipe Compound and preparation method thereof, belong to technical field of polymer materials.
[background technology]
Light diffusion PET has the effect of diffusing light, and namely light scattering can occur on its surface, and what reach from pointolite to area source is advanced, thus light is soft and disseminate out uniformly.
In prior art, also have and photodiffusion material is improved, a kind of anti-aging light diffusion PC base resin of such as Chinese patent (application number 201410118559.4) and preparation method thereof; Patent (application number 20101093708.5) a kind of PS scattered reflection type LED light diffuser plate and preparation method thereof.Analyze the feature of its two kinds of photodiffusion materials, mainly high expensive, and the present invention adopts PET to reduce its production cost greatly as substrate material.
In existing light diffusion PET technology, such as patent (application number 201019026143.9) a kind of light diffusion film uses up diffusion masterbatch and its preparation method and application, patent described in it is for film applications aspect, its uniform light can not be made to spread and reach the soft and brightness of light improve, simultaneously printing opacity do not reach ideal effect yet; And this patent is selected the organic polymer crosslinked microsphere compound of different refractive index and size as light diffusing agent and makes light diffusion masterbatch, need to carry out secondary with raw material when prepared masterbatch uses in downstream to mix, which results in the problem of twice dispersing thus the effect that uniform light spreads can not be reached.
[summary of the invention]
The present invention seeks to the defect in order to overcome prior art, there is provided a kind of cost low, light diffusing sheet material can be made to possess excellent heat resistance and dimensional stability and the light diffusion PET sheet simultaneously with high transmission rate, haze and light diffusion uniformity uses up diffusion PP Pipe Compound.
Another object of the present invention is to provide a kind of preparation method of above-mentioned PP Pipe Compound.
The present invention for achieving the above object, by the following technical solutions:
A kind of light diffusion PET sheet uses up diffusion PP Pipe Compound, it is characterized in that being made up of following mass percent component:
In the present invention, the limiting viscosity of PET (polyethylene terephthalate) is 0.5 ~ 0.8dl/g, and preferred characteristics viscosity is 0.5 ~ 0.6dl/g, more preferably the particulate state PET of viscosity 0.53 ~ 0.56dl/g.
The refractive index of the light diffusing agent in the present invention is 1.49, and median size is the polymethylmethacrylate crosslinked microsphere of 1 ~ 90 μm, preferred median size 1 ~ 20 μm, more preferably median size 2 ~ 5 μm.
The PP Pipe Compound that the present invention only adopts the light diffusing agent of the polymethylmethacrylate crosslinked microsphere of an even refractive index to prepare, it only needs an extrusion moulding not need the effect carrying out reaching again uniform light diffusion while that secondary mixing avoiding the problem of twice dispersing when downstream production and application.
External phase base material and non-homogeneous particle refractive index difference are crossed senior general and are caused total reflection to occur, and light reflection is gone back to inside and cannot effectively derive.The specific refractory power of PET is 1.57, the specific refractory power of polymethylmethacrylate is 1.49, select not to be that very large polymethylmethacrylate crosslinked microsphere had both carried out reflecting or reflecting as light diffusing agent light in microballoon with matrix PET refractive index difference, being conducive to again light derives from matrix thus reaches printing opacity and opaque effect.
In the present invention, nano silicon particle diameter is within the scope of 1 ~ 100nm, its preferred median size is 25nm, can accelerate the crystallization rate of resin, refinement crystallographic dimension, reduce the linear expansivity of light diffusion layer synthetic resins, thus alleviate light diffusing sheet material be heated after amount of crimp.
Antioxidant 300 in the present invention is fusing point is 159 ~ 161 DEG C, ash content≤0.05%, and volatilization is divided into the white powder of 0.02%.
Above-mentioned light diffusion PET sheet uses up a preparation method for diffusion PP Pipe Compound, it is characterized in that comprising the following steps:
Each component raw material is mixed and forms blend, finally by being melt extruded by twin screw extruder, dry cooling, granulating and forming;
Temperature range when described twin screw extruder is produced controls at 165 ~ 280 DEG C, main frame current control is 80 ~ 85% of equipment rated current, engine speed and feeding control are 300 ~ 350r/min and 20 ~ 30HZ respectively, and melt pressure controls at 1.0 ~ 3.0MPa.
Mix in the mixer of rotating speed 80r/min during each component raw material mixing.
Light diffusion PET sheet of the present invention is used up in the preparation method of diffusion PP Pipe Compound, and twin screw extruder concrete each district temperature range is as follows: I district's temperature 180 ~ 190 DEG C, 190 ~ 200 DEG C, IIth district, III district's temperature 220 ~ 230 DEG C, IV district's temperature 250 ~ 260 DEG C, V district's temperature 250 ~ 260 DEG C, VI district's temperature 250 ~ 260 DEG C, VII district's temperature 250 ~ 260 DEG C, VIII district's temperature 240 ~ 250 DEG C, Ⅸ district's temperature 240 ~ 250 DEG C, die head temperature are 260 ~ 265 DEG C.
Wherein during granulation, dicing machine rotating speed is 400 ~ 450r/min.
In the present invention, the granulation of light diffusion PP Pipe Compound is placed in heat-sealing loft drier in 170 DEG C of dryings 2 ~ 4 hours.
The present invention's formula compared with the prior art, has following advantage:
Have excellent light transmission, light diffusing and haze by the light diffusion PET sheet prepared by light of the present invention diffusion PP Pipe Compound, its diffusivity can reach 80% ~ 90%, and transmittance can reach 88% ~ 92%, mist degree reaches 80% ~ 90%; The bright spot of sheet material, site, bright line, the phenomenon such as unbalanced can be reduced; There is good weathering resistance simultaneously, can be applicable to LED fluorescent tube, lampshade uses.
[accompanying drawing explanation]
Fig. 1 is application light diffusion of the present invention PET sheet structural representation.
[embodiment]
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
A kind of light diffusion PP Pipe Compound each constituent mass per-cent is composed as follows:
Its preparation method is: each component raw material stirred with the speed of 80r/min by mixer, is then melt extruded via twin screw extruder by the blend mixed, drying cools, granulating and forming;
Wherein the main frame current control of twin screw extruder is at 44A, and engine speed and feeding control are 300r/min and 25HZ respectively, and melt pressure controls at 1.35MPa, and dicing machine rotating speed is 400r/min, and each district temperature controls as shown in table 1:
Table 1:
| 1 district DEG C | 2 districts DEG C | 3 districts DEG C | 4 districts DEG C | 5 districts DEG C |
| 190 | 200 | 220 | 245 | 245 |
| 6 districts DEG C | 7 districts DEG C | 8 districts DEG C | 9 districts DEG C | Die head temperature DEG C |
| 245 | 245 | 240 | 240 | 265 |
Embodiment 2:
A kind of light diffusion PP Pipe Compound each constituent mass per-cent is composed as follows:
The preparation technology of embodiment 2 is: each component raw material stirred with the speed of 80r/min by mixer, is then melt extruded via twin screw extruder by the blend mixed, drying cools, granulating and forming;
Wherein the main frame current control of twin screw extruder is at 44.2A, and engine speed and feeding control are 300r/min and 30HZ respectively, and melt pressure controls at 2.05MPa, and dicing machine rotating speed is 400r/min, and each district temperature controls as shown in table 1.
Embodiment 3:
A kind of light diffusion PP Pipe Compound each constituent mass per-cent is composed as follows:
The preparation technology of embodiment 3 is: each component raw material stirred with the speed of 80r/min by mixer, is then melt extruded via twin screw extruder by the blend mixed, drying cools, granulating and forming;
Wherein the main frame current control of twin screw extruder is at 44.2A, and engine speed and feeding control are 325r/min and 30HZ respectively, and melt pressure controls at 2.60MPa, and dicing machine rotating speed is 400r/min, and each district temperature controls as shown in table 1.
Embodiment 4:
A kind of light diffusion PP Pipe Compound each constituent mass per-cent is composed as follows:
Its preparation method is: each component raw material stirred with the speed of 80r/min by mixer, is then melt extruded via twin screw extruder by the blend mixed, drying cools, granulating and forming;
Wherein the main frame current control of twin screw extruder is at 44A, and engine speed and feeding control are 350r/min and 20HZ respectively, and melt pressure controls at 1.0MPa, and dicing machine rotating speed is 400r/min, and each district temperature controls as shown in table 1.
Embodiment 5:
A kind of light diffusion PP Pipe Compound each constituent mass per-cent is composed as follows:
Its preparation method is: each component raw material stirred with the speed of 80r/min by mixer, is then melt extruded via twin screw extruder by the blend mixed, drying cools, granulating and forming;
Wherein the main frame current control of twin screw extruder is in 80 ~ 85% of equipment rated current, and engine speed and feeding control are 330r/min and 30HZ respectively, and melt pressure controls at 2.0MPa, and dicing machine rotating speed is 420r/min, and each district temperature controls as shown in table 1.
During PP Pipe Compound application of the present invention, melting is also shaped to light diffusion layer on PET base material two sides, forms the light diffusion PET sheet of three layers, as shown in Figure 1, at the two sides melt molding light diffusion layer 2 of PET base material 1, have light diffusion particle in light diffusion layer 2, arrow is depicted as the trend of light source.
The sheet properties index of light diffusion PET sheet prepared by embodiment 1-5 is as shown in table 2:
Table 2:
Compared with other photodiffusion materials existing, light prepared by the present invention diffusion PET sheet has good dimensional stability, can reach identical light diffusion effect and cost is low.
Claims (8)
1. light diffusion PET sheet uses up a diffusion PP Pipe Compound, it is characterized in that being made up of following mass percent component:
2. a kind of light diffusion PET sheet according to claim 1 uses up diffusion PP Pipe Compound, it is characterized in that the limiting viscosity of described PET is 0.5 ~ 0.8dl/g.
3. a kind of light diffusion PET sheet according to claim 1 uses up diffusion PP Pipe Compound, and it is characterized in that the refractive index of described light diffusing agent is 1.49, median size is the polymethylmethacrylate crosslinked microsphere of 1 ~ 90 μm.
4. a kind of light diffusion PET sheet according to claim 1 uses up diffusion PP Pipe Compound, it is characterized in that described nano silicon particle diameter is within the scope of 1 ~ 100nm.
5. a kind of light diffusion PET sheet according to claim 1 uses up diffusion PP Pipe Compound, and it is characterized in that the fusing point of described antioxidant 300 is 159 ~ 161 DEG C, ash content≤0.05%, volatilization is divided into 0.02%.
6. according to any one of claim 1-5, light diffusion PET sheet uses up a preparation method for diffusion PP Pipe Compound, it is characterized in that comprising the following steps:
Each component raw material is mixed and forms blend, finally by being melt extruded by twin screw extruder, dry cooling, granulating and forming;
Temperature range when described twin screw extruder is produced controls at 165 ~ 280 DEG C, main frame current control is 80 ~ 85% of equipment rated current, engine speed and feeding control are 300 ~ 350r/min and 20 ~ 30HZ respectively, and melt pressure controls at 1.0 ~ 3.0MPa.
7. a kind of light diffusion PET sheet according to claim 6 uses up the preparation method of diffusion PP Pipe Compound, it is characterized in that described twin screw extruder concrete each district temperature range is as follows: I district's temperature 180 ~ 190 DEG C, 190 ~ 200 DEG C, IIth district, III district's temperature 220 ~ 230 DEG C, IV district's temperature 250 ~ 260 DEG C, V district's temperature 250 ~ 260 DEG C, VI district's temperature 250 ~ 260 DEG C, VII district's temperature 250 ~ 260 DEG C, VIII district's temperature 240 ~ 250 DEG C, Ⅸ district's temperature 240 ~ 250 DEG C, die head temperature are 260 ~ 265 DEG C.
8. a kind of light diffusion PET sheet according to claim 6 uses up the preparation method of diffusion PP Pipe Compound, it is characterized in that the granulation of described light diffusion PP Pipe Compound is placed in heat-sealing loft drier in 170 DEG C of dryings 2 ~ 4 hours.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924789A (en) * | 2016-06-17 | 2016-09-07 | 朱交明 | High-temperature-resistant material for LED (light-emitting diode) lampshade |
| CN106167605A (en) * | 2016-05-04 | 2016-11-30 | 中山火炬职业技术学院 | A kind of for LED lamp cover material prescription and preparation method thereof |
| CN106947227A (en) * | 2017-04-27 | 2017-07-14 | 惠州市笨鸟光学材料有限公司 | A kind of frosted lampshade and preparation method thereof |
| CN108387957A (en) * | 2018-02-27 | 2018-08-10 | 宁波激智科技股份有限公司 | A kind of high quantum dot diffusion barrier and its preparation method and application for covering high briliancy |
| CN109721963A (en) * | 2017-10-30 | 2019-05-07 | 江苏瑞凌新能源科技有限公司 | A kind of anti-impact resistance car light lampshade |
| CN112433279A (en) * | 2020-12-04 | 2021-03-02 | 宁波东旭成新材料科技有限公司 | Preparation method of light diffusion film |
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| CN101280095A (en) * | 2008-05-20 | 2008-10-08 | 上海大学 | Glass fiber reinforced polyethylene glycol terephthalate composite material and preparation thereof |
| CN101812220A (en) * | 2010-03-02 | 2010-08-25 | 江苏工业学院 | Light diffusion agent mother material used for light diffusion film, preparation method and application thereof |
| CN103073867A (en) * | 2012-12-28 | 2013-05-01 | 东莞市普凯塑料科技有限公司 | Light diffusion master batch for transparent plastics and preparation method thereof |
| CN104277434A (en) * | 2014-06-30 | 2015-01-14 | 厦门福鑫德进出口贸易有限公司 | Nano composite silicon crystal LED (light-emitting diode) diffuser plate and preparation method thereof |
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| CN101280095A (en) * | 2008-05-20 | 2008-10-08 | 上海大学 | Glass fiber reinforced polyethylene glycol terephthalate composite material and preparation thereof |
| CN101812220A (en) * | 2010-03-02 | 2010-08-25 | 江苏工业学院 | Light diffusion agent mother material used for light diffusion film, preparation method and application thereof |
| CN103073867A (en) * | 2012-12-28 | 2013-05-01 | 东莞市普凯塑料科技有限公司 | Light diffusion master batch for transparent plastics and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167605A (en) * | 2016-05-04 | 2016-11-30 | 中山火炬职业技术学院 | A kind of for LED lamp cover material prescription and preparation method thereof |
| CN105924789A (en) * | 2016-06-17 | 2016-09-07 | 朱交明 | High-temperature-resistant material for LED (light-emitting diode) lampshade |
| CN106947227A (en) * | 2017-04-27 | 2017-07-14 | 惠州市笨鸟光学材料有限公司 | A kind of frosted lampshade and preparation method thereof |
| CN109721963A (en) * | 2017-10-30 | 2019-05-07 | 江苏瑞凌新能源科技有限公司 | A kind of anti-impact resistance car light lampshade |
| CN108387957A (en) * | 2018-02-27 | 2018-08-10 | 宁波激智科技股份有限公司 | A kind of high quantum dot diffusion barrier and its preparation method and application for covering high briliancy |
| CN112433279A (en) * | 2020-12-04 | 2021-03-02 | 宁波东旭成新材料科技有限公司 | Preparation method of light diffusion film |
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Application publication date: 20150805 |