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Dendritic polymer with high refractive index and preparation method thereof

A high-refractive index, dendritic technology, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problem of reducing power generation, achieve the effect of reducing reflection loss, easy to implement, and improving refractive performance

Active Publication Date: 2015-04-22
WEIHAI CY DENDRIMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The packaging structure of this solar photovoltaic module also has many packaging losses, such as the reflection loss between the air and glass, the reflection loss between the surface of the solar cell and the adhesive, and the loss of light reflected by the backplane, which reduces the power generation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First, join dendritic polymer PAMAM-G11g, hydroxysalicylic acid 4g, DMF 10g in the reactor, then add catalyst p-toluenesulfonic acid 0.004g and stannous chloride 0.036g, then add antioxidant 10100.02g, Raise the temperature to 90°C and react for 12 hours. After the reaction is complete, add 60 g of ether, stir with a high-speed stirrer for 5 minutes, let it settle, filter off the supernatant liquid, add ether to wash the remaining substances twice, and rotate the obtained product to remove the product. Containing ether, that is, high refractive index dendrimers.

[0030] The dendritic polymer PAMAM-G1 has a refractive index of 1.49, and the high refractive index dendritic polymer prepared in Example 1 has a refractive index of 1.67.

[0031] The high-refractive-index dendritic polymer prepared in Example 1 was added as an additive into the high-transparency epoxy resin, and its optical properties were measured: the light transmittance at 450 nm wavelength was 96%, and t...

Embodiment 2

[0035] At first, join dendrimer PAMAM-G20.5g and PAMAM-G30.5g, mercaptobenzoic acid 50g, DMF 50g in the reactor, then add catalyst p-toluenesulfonic acid 0.02g and stannous chloride 0.02g, then Add 10980.015g of antioxidant and 31140.015g of antioxidant, raise the temperature to 60°C and react for 24 hours. After the reaction is completed, add 60g of ether, stir with a high-speed stirrer for 3 minutes, let it settle, filter off the supernatant liquid, and add ether to wash the rest 2 times, the obtained product was rotary-evaporated to remove the ether contained in the product to obtain a high-refractive-index dendritic polymer.

[0036] When the dendritic polymers PAMAM-G2 and PAMAM-G3 are mixed at a mass ratio of 1:1, the refractive index is 1.50, and the high refractive index dendritic polymer prepared in Example 2 has a refractive index of 1.66.

[0037] The high-refractive-index dendritic polymer prepared in Example 2 was added as an additive to a commercially available s...

Embodiment 3

[0041] First, add dendritic polymer PAMAM-G31g, mercaptobenzoic acid 49g, mercaptophenylboronic acid 50g, DMF 100g into the reaction kettle, then add catalyst p-toluenesulfonic acid 0.045g and stannous chloride 0.005g, then add antioxidant 10100.01g of anti-oxidant and 10980.02g of antioxidant, heated up to 130°C and reacted for 8 hours. After the reaction was completed, 60g of diethyl ether was added, stirred with a high-speed stirrer for 4min, left to settle, and the supernatant liquid was filtered off, and the rest was washed twice with diethyl ether. The obtained product is rotary-evaporated to remove the ether contained in the product to obtain a high-refractive-index dendritic polymer.

[0042] The dendritic polymer PAMAM-G3 has a refractive index of 1.48, and the high refractive index dendritic polymer prepared in Example 3 has a refractive index of 1.68.

[0043] The high-refractive-index dendritic polymer prepared in Example 3 was added as an additive into the high-tr...

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Abstract

The invention relates to a dendritic polymer and particularly relates to a dendritic polymer with a high refractive index and a preparation method thereof. The dendritic polymer with the high refractive index is prepared by reaction on a dendritic polymer and a benzene ring or sulfydryl-containing organic compound under the action of a catalyst and a high-temperature-resistant oxidant, wherein the dendritic polymer is one or more of PAMAM-G1, PAMAM-G2 or PAMAM-G3; the benzene ring-containing organic compound is one or two of benzoic acid or hydroxyl salicylic acid and the sulfydryl-containing compound is one or more of thiosalicylic acid, sulfydryl sulfonic acid or sulfydryl phenylboronic acid. The dendritic polymer with the high refractive index as an additive is added into well-illuminated epoxy resin and an organic silicon material, so that the refractivity can be remarkably improved. The preparation method provided by the invention is simple in process and easy to realize.

Description

technical field [0001] The invention relates to a dendritic polymer, in particular to a dendritic polymer with a high refractive index and a preparation method thereof. Background technique [0002] Epoxy resin is widely used as LED packaging material because of its good mechanical properties, high transparency and low cost. However, at the current technical level, high-power LEDs can only convert about 5%-10% of the input power into light energy, and convert the rest into heat energy. Excessive heat will damage the chip and surrounding packaging materials. With the continuous improvement of LED brightness and power and the development of white LEDs, traditional transparent epoxy resins can no longer meet the packaging requirements in terms of short-wavelength light transmission, light aging resistance, temperature resistance, and thermal shock resistance. Therefore, other alternative packaging materials must be sought in the packaging of high-power LEDs. [0003] With the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08L63/00C08L83/04C08L87/00H01L33/56
Inventor 李武松刘聪聪刘晓东
Owner WEIHAI CY DENDRIMER TECH
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