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A kind of highly transparent ultraviolet blocking polymer composition and its preparation method and application

A composition, a technology of transparent violet, applied in the field of highly transparent ultraviolet blocking polymer composition and preparation thereof, can solve the problems of uncontrollable melanin particle size, complicated operation, low transparency of functional film, etc. The effect of good transparency and excellent UV shielding properties

Active Publication Date: 2020-01-17
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is complicated to operate and difficult to be promoted in industry
[0006] The publication number CN101233196A discloses a functional film containing melanin and its preparation method, but the particle size of the melanin prepared by this method is uncontrollable and the transparency of the functional film is low
There are also reports in the literature to shield ultraviolet rays by coating the polydopamine layer on the surface of the polymer film, but the method is complicated to operate and the light transmittance of the film is low.

Method used

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  • A kind of highly transparent ultraviolet blocking polymer composition and its preparation method and application
  • A kind of highly transparent ultraviolet blocking polymer composition and its preparation method and application
  • A kind of highly transparent ultraviolet blocking polymer composition and its preparation method and application

Examples

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preparation example Construction

[0039] Preparation of Hollow Polydopamine Nanoparticles

[0040] Preparation of hollow polydopamine nanoparticles 1: First, dopamine (provided by Aladdin Biochemical Technology Co., Ltd., specification: AR) was dissolved in water to form a solution (the concentration of dopamine was 50g L -1 ), and then polystyrene particles (BASF, with an average particle size of 100nm) were dispersed in the dopamine solution (the concentration of polystyrene was 150g·L -1 ), the mass ratio of dopamine and template agent is 1:3, adding NaOH solution to adjust the pH value of the solution to 8.5, stirring, separating and washing after 12 hours of reaction, and removing polystyrene by dissolving in tetrahydrofuran (Sinopharm Chemical Reagent Co., Ltd.) Nuclei were subsequently washed and dried under vacuum to obtain hollow poly Dopamine Nanoparticles 1 (The inner diameter is 100nm, the outer diameter is 110nm, and the polydopamine shell thickness is 5nm).

[0041] Preparation of hollow pol...

Embodiment 1

[0044] Take by weighing 1000g polycarbonate (Saudi Arabia Basic Plastics, model 141R-701), 5g hollow polydopamine rice grains 1 and 0.5g 4,4'-thiobis(6-tert-butyl-3-methylphenol) were first fully mixed in a high-speed mixer, and then the resulting premix was put into a twin-screw extruder for processing The temperature is controlled at 255° C., and the polycarbonate composition particles are obtained through melting, plasticizing and granulating. Subsequently, the composition was vacuum-dried at 80° C. for 6 hours, and then hot-pressed (mould temperature 250° C.) to obtain a sample sheet with a thickness of 1.0 mm. The optical properties of the prepared samples were measured by a UV-2501 ultraviolet-visible photometer. The optical performance test results of the samples prepared in Example 1 are shown in Table 1. The UV-Vis spectrum of the polymer composite is shown in figure 2 shown.

Embodiment 2

[0048] Weigh 1000g polystyrene (Taiwan Chi Mei, model PG-33) and 10g Hollow polydopamine nanoparticles 2 First, fully mix uniformly in a high-speed mixer, then put the obtained premixed material into a twin-screw extruder, control the processing temperature at 160°C, and obtain polystyrene composition particles through melting, plasticizing and granulating. Subsequently, the composition was vacuum-dried at 80° C. for 6 hours, and then hot-pressed (mould temperature 250° C.) to obtain a sample sheet with a thickness of 1.0 mm. The optical performance test results of the samples prepared in Example 2 are shown in Table 1.

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Abstract

The invention discloses a high-transparency UV blocking polymer composition as well as a preparation method and application thereof. The composition comprises polymers and hollow polydopamine nanometer particles; or polymers, hollow polydopamine nanometer particles and antioxidants. Through being metered by regarding the weight of the polymers as 100 weight parts, the hollow polydopamine nanometerparticles account for 0.5 to 10 weight parts; the antioxidants account for 0.01 to 1 weight part. The preparation method comprises one of the following steps of (a) performing fusion blending on thepolymers, hollow polydopamine nanometer particles and / or antioxidants according to the consumption to obtain the polymer composition; (b) dissolving the polymers into the organic solvents; then addingthe hollow polydopamine nanometer particles according to the consumption; performing uniform mixing through stirring and drying to obtain the polymer composition. The polymer transparency is maintained; meanwhile, the UV blocking capability and the light stability of the polymers can be enhanced; the service life of the polymers can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a highly transparent ultraviolet blocking polymer composition, a preparation method and application thereof. Background technique [0002] Ultraviolet light is divided into short-wave UVC (200-280nm), medium-wave UVB (280-320nm) and long-wave UVA (320-400nm) according to the length of its wavelength. The sun is the main source of natural ultraviolet rays, which pass through the atmosphere and finally reach the ground. Appropriate amount of ultraviolet rays can promote the metabolism of minerals in the body and the formation of vitamin D, and has the function of sterilization and disinfection, but long-term ultraviolet radiation can easily damage the eyes, accelerate skin aging, induce skin diseases and even cause cancer. At the same time, the increased energy of ultraviolet rays can destroy the chemical bonds of polymers and trigger auto-oxidation reactions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L25/06C08L33/12C08L29/04C08L45/00C08L55/02C08L67/02C08L79/04
CPCC08L25/06C08L29/04C08L33/12C08L45/00C08L55/02C08L67/02C08L69/00C08L2201/08C08L2201/10C08L2203/20C08L2205/20C08L79/04
Inventor 东为富汪洋王雪飞李婷马丕明陈明清
Owner JIANGNAN UNIV
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