CN1916041A - Light scattering material of heat-resistant, high strength organic glass, and prepartion method - Google Patents
Light scattering material of heat-resistant, high strength organic glass, and prepartion method Download PDFInfo
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- CN1916041A CN1916041A CN 200510017125 CN200510017125A CN1916041A CN 1916041 A CN1916041 A CN 1916041A CN 200510017125 CN200510017125 CN 200510017125 CN 200510017125 A CN200510017125 A CN 200510017125A CN 1916041 A CN1916041 A CN 1916041A
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- polymerization
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- methyl methacrylate
- methacrylic acid
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Abstract
This invention discloses heat-resistance and high-strength organic light-scattering material doped with SiO2 nanomaterial. The organic light-scattering material is prepared by prepolymerization and polymerization of methyl methacrylate monomer and methacrylic acid comonomer dispersed with nanoscale SiO2 at different temperatures for different time. The organic light-scattering material can be widely used as a light carrier in lightening, light sources and lightening constructions.
Description
Technical field
The present invention relates to modified organic glass light-scattering material and preparation technology thereof, belong to nano combined optical material field.
Background technology
Nanometer SiO
2The doping pmma material is a kind of of the advanced composite material that grows up along with the rise of nanotechnology phase late 1980s.It also is confined to the experimental study stage at present." applied chemistry " 2002 the 9th phases have been reported the work that Zhang Qi defends etc., adopt sol-gel technique, and article thinks that the alternate intermiscibility of its organic/inorganic two is good, do not produce to be separated, and material is transparent, and transmittance can reach about 80%.Material that it is generally acknowledged such preparation only limits to the former organic glass surface of modification, strengthens the hardness and the thermotolerance of synthetic glass by coating." engineering plastics application " 1994,22 (5) 47; " macromolecular material is learned and engineering " 1999,15 (1), 108 and " functional materials " 1995,26 (6), 510 have been reported the work of relevant silicon doping, and mass polymerization, SiO are adopted in specimen preparation
2The use of surface treatment agent does not make the dispersing uniformity of nano particle that bigger improvement is arranged.Chinese patent 01115311.3 discloses " preparation nanometer SiO
2The method of modified optical plastic fibres ", methyl methacrylate monomer is 5 with the ratio of siloxane compound: 1-50: 1, add the azo class of total amount 0.1-1% or the mercaptan type chain transfer agent of peroxide initiator and 0.03-0.2%, obtain mechanical property, the nanometer SiO that optical property is improved
2The modified PMMA fiber optic materials.Chinese patent 031276350 " illumination shows with nano-silicon modified organic glass light-scattering material and preparation method " passes through nanometer SiO
2The control of particle and PMMA presoma component ratio makes the evenly light of the various wavelength of scattering of matrix material, and as illumination, the display light carrier not only can strengthen body brightness and give good visual experience.But also there is common synthetic glass inherent shortcoming in this matrix material, and promptly heat resistance is poor, surperficial friction resistant performance, and promptly intensity is not high, is difficult to adapt to for the application of some aspect, must further improve.
Summary of the invention
The objective of the invention is to have better temperature resistance and intensity preferably by adjusting PMMA.
Synthetic glass light-scattering material of the present invention is characterized in that it by following recipe ingredient raw material, generates through polymerization:
Weight percentages of components
Methyl methacrylate 70.0-85.0
Methacrylic acid 10.0-25.0
Diisopropyl azodicarboxylate 1.5～3.0
Nanometer SiO
2Powder 2.0-3.5
Light-scattering material of the present invention is characterized in that its preparation method is as described in the following step:
Step 1: in following component concentration scope, adjust each composition weight percentage composition, and feed intake by the prescription of adjusting:
Weight percentages of components
Methyl methacrylate 70.0-85.0
Methacrylic acid 10.0-25.0
Diisopropyl azodicarboxylate 1.5～3.0
Nanometer SiO
2Powder 2.0-3.5
Step 2: (1) gets the methyl methacrylate and the methacrylic acid monomer of calculated amount total amount 20%, adds calculated amount, promptly accounts for the nanometer SiO of gross weight 2.0～3.5%
2Powder carries out the high-frequency ultrasonic vibration and is mixed to whole SiO under 0～20 ℃
2Powder suspends, till the liquid that is translucent;
(2) methyl methacrylate and the methacrylic acid with step 2 (1) gained liquid and other 80% weight mixes;
Step 3: prepolymerization
The mixing liquid that step 2 (2) obtains adds the recipe ingredient amount, i.e. the Diisopropyl azodicarboxylate of 1.5～3.0% weight, the degassing of mixing final vacuum is translucent to being creamy white, mixed solution is progressively heated up in 30～100 ℃ water-bath, different consuming time, accumulative total prepolymerization in 50 minutes;
Step 4: polymerization
The prepolymer that step 3 is obtained is quickly cooled to 20 ℃, and grouting is gone in the mould, and in water-bath 40～80 ℃, different warm areas, the different accumulative totals of polymerizations down consuming time 20～100 hours obtain work in-process;
Step 5: the work in-process that step 4 obtains are inserted in the air blast polymerization furnace, in 80～110 ℃ under the temperature polymerization obtained heat-resistant, high strength synthetic glass light-scattering material of the present invention in 2～5 hours.According to the present invention, by at the wavelength of light source, nanometer SiO
2Particle diameter can be selected between 400nm～700nm, at the full spectrum of white light, even can design different-grain diameter blended nanometer SiO
2Mix, with the photon of scattering different wave length better.
The present invention is because toughner and the antiaging agent of using when having removed conventional methyl methacrylate polymerization in its recipe ingredient, and adding methacrylic acid 10～25%, and the initiator Diisopropyl azodicarboxylate produces different crosslinking reactions and makes the temperature tolerance of product and intensity obviously improve during polymerization.Also because aforementioned unique technology has been adopted in polymerization, the good in optical property of the product that obtains, the yield rate height, the contrast of the performance of product of the present invention and Chinese patent 031276350 and conventional PMMA is listed in the table 1.
Table 1 performance comparison data
| Project | Conventional | 031276350 | The present invention |
| PNYA(30℃) | 1.19 gram per centimeter | 1.19 gram per centimeter | 1.19 gram per centimeter |
| Specific refractory power | No 1.491 Nc 1.489 Nf 1.497 | 1.4916 1.4892 1.4975 | 1.4916 1.4892 1.4975 |
| Brinell hardness | 20ln/mm 2 | 20ln/mm 2 | 22ln/mm 2 |
| Thermal expansivity | 8.5×10 -6/℃ | 92×10 -6/℃ | 92×10 -6/℃ |
| The tensile elasticity number | 3.1×10 3MPa | 1.8×10 3MPa | 1.8×10 3MPa |
| Second-order transition temperature | 100℃ | 110℃ | 120℃ |
Embodiment
Embodiment 1: with the thick SiO of 20mm
2The preparation of the modified plate prescription that feeds intake
Weight percentages of components
Methyl methacrylate 74.5
Methacrylic acid 20.0
Diisopropyl azodicarboxylate 2.0
Nanometer SiO
2Powder (650nm particle diameter) 3.5
By above-mentioned ratio of components, earlier with SiO
2Powder is added in the methyl methacrylate and methacrylic acid monomer of total charging capacity 20%, be dispersed in the monomer by HF oscillation, the methyl methacrylate and the methacrylic acid monomer that add residuals weight then, add the initiator vacuum outgas till do not have a steam bubble, differing temps and time are carried out pre-polymerization:
30～80 ℃ 20 minutes
80～90 ℃ 20 minutes
90～100 ℃ 10 minutes
Prepolymer product is quickly cooled to 20 ℃ then, is fed in the mould, in water-bath, by following warm area, consuming timely carry out polymerization:
40～45 ℃ 10 hours
45～55 ℃ 20 hours
55～65 ℃ 10 hours
65～80 ℃ 5 hours
Accumulative total 45 hours.Insert then and continue polymerization in the air blast polymerization furnace:
80～90 ℃ 2 hours
90～100 ℃ 1 hour
100～110 ℃ 0.5 hour
3.5 hours consuming time of accumulative total, total 48.5 hours consuming time of polymerization.
Embodiment 2: φ 30m/m bar
The recipe ingredient weight percent
Methyl methacrylate 80.5
Methacrylic acid 15.0
Diisopropyl azodicarboxylate 1.5
Nanometer SiO
2Powder (700nm particle diameter) 3.0
SiO
2Dispersion, the degassing, pre-polymerization are with embodiment 1, and polymerization is undertaken by following warm area is consuming time in water-bath:
40 ℃ 20 hours
40～45 ℃ 20 hours
45～50 ℃ 20 hours
50～55 ℃ 10 hours
55～65 ℃ 10 hours
65～75 ℃ 10 hours
75～80 ℃ 10 hours
Accumulative total polymerization in 100 hours.Insert the different warm areas of air blast polymerization furnace then, polymerization consuming time:
80～90 ℃ 5 hours
90～100 ℃ 2 hours
Accumulative total polymerization 107 hours.
The thick red sheet material of embodiment 3:15mm
Methyl methacrylate 76.0
Methacrylic acid 15.5
Diisopropyl azodicarboxylate 3.0
Nanometer SiO
2Powder (600nm particle diameter) 2.5
The molten pigment 3.0 of reddish oil
SiO
2Dispersion, the degassing, pre-polymerization add pigment with embodiment 1 during pre-polymerization.Carry out polymerization by following warm area is consuming time in the water-bath:
40 ℃～50 ℃ 10 hours
50～60 ℃ 12 hours
60～80 ℃ were advanced the air blast polymerization furnace in 5 hours then
80～90 ℃ 5 hours
905～100 ℃ of polymerizations in 1 hour add up 33 hours.
Claims (2)
1, a kind of heat-resistant, high strength synthetic glass light-scattering material is characterized in that it by following recipe ingredient raw material, generates through polymerization:
Weight percentages of components
Methyl methacrylate 70.0-85.0
Methacrylic acid 10.0-25.0
Diisopropyl azodicarboxylate 1.5～3.0
Nanometer SiO
2Powder 2.0-3.5
2,, it is characterized in that its preparation method is as described in the following step according to the light-scattering material of claim 1:
Step 1: in following component concentration scope, adjust each composition weight percentage composition, and feed intake by the prescription of adjusting:
Weight percentages of components
Methyl methacrylate 70.0-85.0
Methacrylic acid 10.0-25.0
Diisopropyl azodicarboxylate 1.5～3.0
Nanometer SiO
2Powder 2.0-3.5
Step 2: (1) gets the methyl methacrylate and the methacrylic acid monomer of calculated amount total amount 20%, adds calculated amount, promptly accounts for the nanometer SiO of gross weight 2.0～3.5%
2Powder carries out the high-frequency ultrasonic vibration and is mixed to whole SiO under 0～20 ℃
2Powder suspends, till the liquid that is translucent;
(2) methyl methacrylate and the methacrylic acid with step 2 (1) gained liquid and other 80% weight mixes;
Step 3: prepolymerization
The mixing liquid that step 2 (2) obtains adds the recipe ingredient amount, i.e. the Diisopropyl azodicarboxylate of 1.5～3.0% weight, the degassing of mixing final vacuum is translucent to being creamy white, mixed solution is progressively heated up in 30～100 ℃ water-bath, different consuming time, accumulative total prepolymerization in 50 minutes;
Step 4: polymerization
The prepolymer that step 3 is obtained is quickly cooled to 20 ℃, and grouting is gone in the mould, and in water-bath 40～80 ℃, different warm areas, the different accumulative totals of polymerizations down consuming time 20～100 hours obtain work in-process;
Step 5: the work in-process that step 4 obtains are inserted in the air blast polymerization furnace, in 80～110 ℃ under the temperature polymerization obtained heat-resistant, high strength synthetic glass light-scattering material of the present invention in 2～5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100171256A CN100400558C (en) | 2005-09-09 | 2005-09-09 | Light scattering material of heat-resistant, high strength organic glass, and prepartion method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100171256A CN100400558C (en) | 2005-09-09 | 2005-09-09 | Light scattering material of heat-resistant, high strength organic glass, and prepartion method |
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| Publication Number | Publication Date |
|---|---|
| CN1916041A true CN1916041A (en) | 2007-02-21 |
| CN100400558C CN100400558C (en) | 2008-07-09 |
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610444A (en) * | 2018-05-24 | 2018-10-02 | 安徽新涛光电科技有限公司 | A kind of anti-aging transparent roofs organic glass |
| CN113527562A (en) * | 2020-04-14 | 2021-10-22 | 西安昊锐电子科技有限公司 | Backing plate for diamond wire cutting material and manufacturing method thereof |
| CN114249857A (en) * | 2021-12-31 | 2022-03-29 | 重庆禾维科技有限公司 | Thermotropic fireproof material, fireproof dimming glass and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237113C (en) * | 2003-07-17 | 2006-01-18 | 长春市恩特尔新型材料有限责任公司 | Light scattering material of organic glass modified by Nano silicon in use for lighting and displaying, and preparation method |
-
2005
- 2005-09-09 CN CNB2005100171256A patent/CN100400558C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610444A (en) * | 2018-05-24 | 2018-10-02 | 安徽新涛光电科技有限公司 | A kind of anti-aging transparent roofs organic glass |
| CN113527562A (en) * | 2020-04-14 | 2021-10-22 | 西安昊锐电子科技有限公司 | Backing plate for diamond wire cutting material and manufacturing method thereof |
| CN114249857A (en) * | 2021-12-31 | 2022-03-29 | 重庆禾维科技有限公司 | Thermotropic fireproof material, fireproof dimming glass and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100400558C (en) | 2008-07-09 |
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