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Polyacrylate modified polyvinylidene fluoride film with excellent ultraviolet resistance and preparation method thereof

A polyacrylate and polyvinylidene fluoride technology, applied in the field of materials, can solve problems such as the inability to achieve the purpose of modifying the pore wall in the membrane, and achieve the effects of improving hydrophilicity, good corrosion resistance and increasing durability

Inactive Publication Date: 2018-05-29
安徽长正升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-ultraviolet modification of polyvinylidene fluoride film generally adopts the method of modifying the surface of the film. This modification method only modifies the surface of the film and cannot achieve the purpose of modifying the inner pore wall of the film.

Method used

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Embodiment Construction

[0017] The polyacrylate-modified polyvinylidene fluoride film with excellent UV resistance of this embodiment is prepared by the following steps:

[0018] (1) Prepare a suspension of nano-titanium dioxide with absolute ethanol as a solvent, and sonicate for 40 minutes, start magnetic stirring and raise the temperature to 60°C, keep the temperature constant, slowly drop into the mixed solution of cerium chloride and zinc chloride, and at the same time Keep the pH of the mixed solution at 8-9, continue magnetic stirring at constant temperature for 12 hours after the addition is completed, wash, filter, dry, and calcinate the slurry at a high temperature to obtain nano-titanium dioxide coated with cerium-doped zinc oxide on the surface; The mass ratio of cerium chloride and zinc chloride in the mixed solution of cerium and zinc chloride is 1:8; the mass ratio of nano-titanium dioxide, absolute ethanol and zinc chloride is 1:15:0.8;

[0019] (2) Ultrasonic disperse nano-titanium d...

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PUM

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Abstract

The invention provides a polyacrylate modified polyvinylidene fluoride film with excellent ultraviolet resistance and a preparation method thereof. The preparation method is characterized by comprising the following steps: firstly, performing hydrolysis deposition on cerium chloride and zinc chloride on the surface of nano-titanium dioxide, so as to obtain nano-titanium dioxide with the surface coated with cerium-doped zinc oxide; treating the surface with a coupling agent KH-550, so as to obtain organic silicone modified anti-ultraviolet particles; polymerizing 2-acrylamide-2-methyl-propanesulfonic acid and hydroxyethyl methylacrylate, so as to obtain a polyacrylate polymer; mixing the polyacrylate polymer and polyvinylidene fluoride in a torque rheometer; finally, performing heat meltingon a mixture obtained after mixing in N, N-dimethylacetamide, defoaming, casting into a film, so as to obtain the polyacrylate modified polyvinylidene fluoride film with excellent ultraviolet resistance. The film provided by the invention has the characteristics of being good in corrosion resistance, chemical stability, ultraviolet radiation resistance, weather resistance and the like.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a polyacrylate-modified polyvinylidene fluoride film with excellent ultraviolet resistance and a preparation method thereof. Background technique [0002] Polyvinylidene fluoride (PVDF) is a membrane material with excellent performance because of its excellent weather resistance, heat resistance, acid and alkali resistance, easy control of film forming process conditions and good mechanical properties. However, ultraviolet radiation can reduce the mechanical properties of polyvinylidene fluoride such as toughness and strength. Therefore, the anti-ultraviolet modification of polyvinylidene fluoride is of great significance. Nano-titanium dioxide particles have good anti-ultraviolet performance, a wide range of ultraviolet shielding bands, and have antibacterial, anti-mildew and deodorizing functions. They are cost-effective and are ideal ultraviolet shielding agents. [0003]...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L33/24C08L23/06C08K9/10C08K9/06C08K3/22C08J5/18C08F220/58C08F220/20
CPCC08F220/58C08F220/585C08J5/18C08J2327/16C08J2433/24C08K3/22C08K9/06C08K9/10C08K2003/2241C08K2201/011C08F220/20
Inventor 陈宇
Owner 安徽长正升科技有限公司
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