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Manufacturing method of transparent self-cleaning PMMA plate and transparent self-cleaning PMMA plate

A manufacturing method and self-cleaning technology, applied in the field of PMMA materials, can solve problems such as functional failure, aesthetic impact, and structural damage, and achieve the effect of improving interlayer bonding, ensuring reliability and durability, and thin thickness

Pending Publication Date: 2022-04-19
HAIYAN HUASHUAITE PLASTIC ELECTRICAL APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above scenario, long-term use of PMMA materials will form dust accumulation, and the cleaning effect of rainwater washing is not good, which will affect the overall aesthetics
In order to maintain high transparency, regular manual cleaning is required, resulting in high maintenance costs
In related technologies, hydrophobic or hydrophilic modified nanoparticles are mostly used to fill the bonding system to construct a moderately rough surface to achieve self-cleaning function, but it will cause loss of surface hardness, transparency and other properties of the original PMMA material, and the functional layer The mechanical reliability is still insufficient, and the structure damage and function failure are prone to occur after the surface friction force is applied, and it is difficult to meet the self-cleaning requirements of PMMA materials for outdoor use

Method used

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  • Manufacturing method of transparent self-cleaning PMMA plate and transparent self-cleaning PMMA plate
  • Manufacturing method of transparent self-cleaning PMMA plate and transparent self-cleaning PMMA plate
  • Manufacturing method of transparent self-cleaning PMMA plate and transparent self-cleaning PMMA plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present invention provides a kind of manufacturing method of transparent self-cleaning PMMA sheet material and transparent self-cleaning PMMA sheet material, and this manufacturing method comprises steps:

[0024] (1) Manufacturing a mold having a cavity. The mold is a pouring glass mold, and its manufacturing process is detailed in the patents "Mold for Rapid Polymer Casting" (ZL 202120435162.3) and "Fastening Mechanism for Polymer Casting Mold and Polymer Casting Device" (ZL 202120246569.1) Relevant descriptions will not be repeated here.

[0025] (2) Using one of vapor deposition, spin coating, dip coating, spray coating and flow coating, the functional solution is formed into a thin layer spreading liquid film on the side wall or both side walls of the cavity, and the functional solution Including functional monomer, solvent MMA, thickener and substrate wetting agent, the functional monomer has hydrophobic self-cleaning function or hydrophilic self-cleaning fun...

Embodiment 2

[0066] The difference with the manufacturing method of Example 1 is that in this embodiment, the manufacturing method of the transparent self-cleaning PMMA plate comprises the following steps:

[0067] Manufacture a glass mold for pouring molding, the average roughness of the inner wall surface of the cavity of the glass mold is 10nm;

[0068] Use hydrophobic self-cleaning functional monomers, specifically lauryl methacrylate and 1H,1H-perfluorooctyl methacrylate, with a molar ratio of 1:2, supplemented by suitable thickeners, substrate wetting agents and MMA solvents, Form a functional solution with a viscosity of 100210mPa s (25°C), a surface tension of ≤30mN / m, and a mass proportion of functional monomers of 70%. The mass proportions of the thickener and the substrate wetting agent in the functional solution are both 1 %;

[0069] The two walls of the mold cavity of the glass mold are pre-formed with the functional solution to form a thin layer of spreading liquid film, an...

Embodiment 3

[0073] The difference with the manufacturing method of Example 1 is that in this embodiment, the manufacturing method of the transparent self-cleaning PMMA plate comprises the following steps:

[0074] Manufacture a glass mold for pouring molding, the average roughness of the inner wall surface of the cavity of the glass mold is 400nm;

[0075] Use hydrophobic self-cleaning functional monomers, specifically octyl methacrylate, 1H, 1H, 2H, 2H-heptadecafluorodecyl acrylate and vinyl-terminated dimethyl polysiloxane (average molecular weight about 2000), molar Ratio 1:1:4, supplemented with suitable thickener, substrate wetting agent and MMA solvent, forming a function with a viscosity of 100210mPa s (25°C), surface tension ≤ 30mN / m, and functional monomer mass accounting for 70% Solution, the mass proportion of thickener and substrate wetting agent in the functional solution is 1%;

[0076] The two side walls of the mold cavity of the glass mold are pre-formed with the function...

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Abstract

The manufacturing method comprises the following steps: preparing a self-cleaning functional monomer into a functional solution, forming the functional solution on the inner surface of a PMMA casting forming mold in a thin-layer liquid film spreading manner, and after a polymer solution for forming a matrix layer is cast, carrying out free radical polymerization reaction to obtain the transparent self-cleaning PMMA plate. Along with spontaneous infiltration and diffusion of the functional monomer, a gradient self-cleaning functional layer of which the concentration distribution is controlled by spontaneous infiltration and diffusion from outside to inside is formed on the surface of the formed PMMA plate. The functional monomer is enriched in the surface layer area of the PMMA plate in a chemical bonding manner based on copolymerization, so that the obtained self-cleaning functional layer has the characteristics of wear resistance and thin thickness, and the expensive high-performance functional monomer and high-concentration utilization thereof have a large regulation space. In addition, the solvent in the thin-layer spreading liquid film is consistent with the pouring polymer solution, so that the polymerized phase interface disappears, namely the self-cleaning functional layer and the matrix layer are integrated, and the interlayer binding force is improved.

Description

technical field [0001] The invention relates to the technical field of PMMA materials, in particular to a method for manufacturing a transparent self-cleaning PMMA plate and the transparent self-cleaning PMMA plate. Background technique [0002] Polymethyl methacrylate (PMMA), as a transparent polymer material with excellent comprehensive performance, has been widely used in traffic noise barriers, building transparent / heat-insulating curtain walls, aircraft portholes, and super bridge wind barriers. In the above scenario, long-term use of PMMA materials will form dust accumulation, and the cleaning effect of rainwater washing is not good, which affects the overall aesthetics. In order to maintain high transparency, regular manual cleaning is required, resulting in high maintenance costs. In related technologies, hydrophobic or hydrophilic modified nanoparticles are mostly used to fill the bonding system to construct a moderately rough surface to achieve self-cleaning funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/04C08F283/12C08F299/08C08F220/14C08F220/18C08F220/24C08F220/20C08F230/02C08F220/58B32B27/06B32B27/30
CPCC08F265/04C08F283/124C08F299/08B32B27/308B32B27/06C08F220/14C08F220/1812C08F220/24C08F220/1808C08F220/20C08F230/02C08F220/58
Inventor 屈洁昊刘向东殷胜炯何淑婷范琴琴朱红琴许王杰
Owner HAIYAN HUASHUAITE PLASTIC ELECTRICAL APPLIANCES CO LTD
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