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Ultraviolet-blocking type photoluminescence PDMS composite material and preparation method thereof

A composite material and photoluminescence technology, which is applied in the field of photoluminescence PDMS composite materials and their preparation, can solve the problems of shortening the service life of composite materials and shortening the service life of functional composite materials, and achieves long service life and excellent ultraviolet blocking performance. , the effect of high stability

Inactive Publication Date: 2018-03-02
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the idea is desirable, the use of composite antioxidants cannot really inhibit its oxidative activity, and there is a problem of photodegradation, which shortens the service life of the composite material
In short, although inorganic nanoparticles have outstanding UV shielding properties, they also have strong photocatalytic activity and oxidation activity under the action of sunlight, which easily degrades the polymer matrix and shortens the service life of functional composite materials (Carbohydr .Polym.,2012,88(3):992-1001.)

Method used

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  • Ultraviolet-blocking type photoluminescence PDMS composite material and preparation method thereof
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  • Ultraviolet-blocking type photoluminescence PDMS composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of ultraviolet blocking type photoluminescence PDMS composite material, is made of the raw material of following parts by weight:

[0051] Vinyl-terminated polysiloxane (vinyl content: 0.01mol / 100g, weight average molecular weight: 62000g / mol) 100 parts;

[0052] 0.1 parts of hydrogen-terminated silicon nanocrystals;

[0053] 0.02 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum complex catalyst;

[0054] 0.004 parts of 3-methyl-1-butyn-3-ol

[0055] 3 parts of hydrogen-containing silicone oil with a hydrogen content of 0.5% and a viscosity of 10 cSt at room temperature;

[0056] Mix the above-mentioned raw materials uniformly in a vacuum kneader, put them into a mold, remove air bubbles, and cure at 120°C for 0.1h to obtain a high-elastic (ncSi:H) / PDMS composite material with UV blocking, and replace the above silicon nanocrystals with After decyl-passivated silicon nanocrystals (ncSi-decyl), the same method was used to prepare (ncSi-decyl) / PDMS co...

Embodiment 2

[0058] A kind of ultraviolet blocking type photoluminescence PDMS composite material, is made of the raw material of following parts by weight:

[0059] Vinyl-terminated polysiloxane (vinyl content: 0.01mol / 100g, weight average molecular weight: 62000g / mol) 100 parts;

[0060] 0.1 part of silicon nanocrystal;

[0061] 10 parts of nano silica sol;

[0062] 0.02 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum complex catalyst;

[0063] 0.004 parts of 3-methyl-1-butyn-3-ol

[0064] 3 parts of hydrogen-containing silicone oil with a hydrogen content of 0.5% and a viscosity of 10 cSt at room temperature;

[0065] Mix the above raw materials uniformly in a vacuum kneader, put them into a mold, remove air bubbles, and cure at 120 ° C for 0.1 h to obtain a highly elastic PDMS composite material with UV blocking, which can maintain high transparency similar to pure PDMS. It is detected that the ultraviolet protection factor (UPF) of the high elastic PDMS composite mater...

Embodiment 3

[0067] A kind of ultraviolet blocking type photoluminescence PDMS composite material, is made of the raw material of following parts by weight:

[0068] Vinyl-terminated polysiloxane (vinyl content: 0.01mol / 100g, weight average molecular weight: 62000g / mol) 100 parts;

[0069] 0.1 part of silicon nanocrystal;

[0070] 10 parts of MQ silicone resin with a viscosity of 10cSt at room temperature;

[0071] 0.02 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum complex catalyst;

[0072] 0.004 parts of 3-methyl-1-butyn-3-ol

[0073] 3 parts of hydrogen-containing silicone oil with a hydrogen content of 0.5% and a viscosity of 10 cSt at room temperature;

[0074] Mix the above raw materials uniformly in a vacuum kneader, put them into a mold, remove air bubbles, and cure at 120 ° C for 0.1 h to obtain a highly elastic PDMS composite material with UV blocking, which can maintain high transparency similar to pure PDMS. It is detected that the ultraviolet protection facto...

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Abstract

The invention belongs to the field of nano materials, and specifically discloses an ultraviolet-blocking type photoluminescence polydimethylsiloxane (PDMS) composite material and a preparation methodthereof. The preparation method comprises the following steps: uniformly mixing a silicon nano crystal, nano silicon dioxide, vinyl polysiloxane, silicon resin, a platinum catalyst, a silicon-hydrogenaddition reaction inhibitor and hydrogen-containing silicone oil according to a ratio, then performing curing at a temperature of 20-160 DEG C to obtain the ultraviolet-blocking type photoluminescence PDMS composite material. The functional PDMS material prepared by the method provided by the invention can completely shield ultraviolet rays with wavelengths of 400 nm or below, and has excellent ultraviolet blocking performance (ultraviolet protection coefficient of 40-500<+>), photoluminescence and the like. In addition, the fluorescence quantum yield is stable, the service life is long, andthe PDMS material can be widely used in the fields of biological imaging, medical diagnosis, textiles, cosmetics, wearable equipment, spinning, anti-counterfeiting marks and the like.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to a photoluminescent PDMS composite material that blocks ultraviolet light and a preparation method thereof. Background technique [0002] With the increase of industrial waste gas and exhaust emissions, the ozone layer is getting thinner, especially in summer, when the amount of floating layer or haze in the sky becomes less, and more ultraviolet rays in the sun reach the surface of the earth, causing direct damage to human skin. wounds, burns, and even skin diseases such as skin cancer. Therefore, protecting human skin from ultraviolet rays and developing new materials that block ultraviolet rays are of great significance to the benefit of mankind. Under the action of ultraviolet rays, polymers are prone to generate free radicals, resulting in photodegradation, accelerating the aging, discoloration and degradation of polymer coatings, and greatly reducing the service ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K13/06C08K9/04C08K9/06C08K3/02C08K3/36C08K5/05
CPCC08K2003/023C08L83/04C08L2205/025C08L2205/03C08K13/06C08K9/04C08K9/06C08K3/02C08K3/36C08K5/05
Inventor 陈东志麦中华徐卫林
Owner WUHAN TEXTILE UNIV
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