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A kind of preparation method of polypropylene surface porous coating

A technology with a porous surface and polypropylene, applied in the direction of coating, etc., can solve the problem that the surface of polypropylene material is difficult to coat with coating

Active Publication Date: 2020-10-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The purpose of this invention is to provide a method for preparing a porous coating on the surface of polypropylene, which solves the problem that it is difficult to coat the surface of polypropylene materials in the prior art

Method used

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  • A kind of preparation method of polypropylene surface porous coating
  • A kind of preparation method of polypropylene surface porous coating
  • A kind of preparation method of polypropylene surface porous coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Add 0.5g acrylamide, 0.04g N,N-dimethylbisacrylamide, 0.03g photoinitiator 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylbenzene into the beaker Acetone, 0.025g of surfactant sodium dodecylbenzenesulfonate and 3.9g of deionized water were stirred at 300rpm for 20min at room temperature.

[0032] 2. Next, add 0.5 g of polyethylene glycol (Mw=20000) into the beaker, and stir at room temperature for 20 min. Another 0.02mol / L sodium hydroxide solution was prepared, and after the polyethylene glycol particles were completely dissolved, sodium hydroxide was added dropwise to the prepared solution until the pH was 8.2, and 0.016g of dopamine was added to continue stirring at 300rpm for 10min.

[0033] 3. After the solution is prepared, sonicate at room temperature for 10 minutes until the bubbles in the solution completely disappear. Then the polypropylene was immersed in the solution, and stood at 25° C. for 24 hours under the condition of avoiding light, so that the mixed solut...

Embodiment 2

[0039] 1. Add 0.5g acrylamide, 0.03g N,N-dimethylbisacrylamide, 0.015g photoinitiator 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylbenzene into the beaker Acetone and 4.36g deionized water were stirred at 300rpm for 5min at room temperature.

[0040] 2. Next, add 0.1 g of polyethylene glycol (Mw=20000) into the beaker, and stir at room temperature for 20 min. Another 0.02mol / L sodium hydroxide solution was prepared, and after the polyethylene glycol particles were completely dissolved, sodium hydroxide was added dropwise to the prepared solution until the pH was 7.8, and 0.012g dopamine was added to continue stirring at 300rpm for 10min.

[0041] 3. After the solution is prepared, sonicate at room temperature for 10 minutes until the bubbles in the solution completely disappear. Then the polypropylene was immersed in the solution, and stood at 25° C. for 24 hours under the condition of avoiding light, so that the mixed solution of dopamine and acrylamide was prepolymerized on the s...

Embodiment 3

[0046] 1. Add 0.5g acrylamide, 0.02g N,N-dimethylbisacrylamide, 0.01g photoinitiator 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylbenzene into the beaker Acetone, 0.005g surfactant sodium dodecylbenzenesulfonate and 4.05g deionized water were stirred at 300rpm for 10min at room temperature.

[0047] 2. Next, add 0.7 g of polyethylene glycol (Mw=6000) into the beaker, and stir at room temperature for 20 min. Another 0.02mol / L sodium hydroxide solution was prepared, and after the polyethylene glycol particles were completely dissolved, sodium hydroxide was added dropwise to the prepared solution until the pH was 8.2, and 0.008g dopamine was added to continue stirring at 300rpm for 10min.

[0048] 3. After the solution is prepared, sonicate at room temperature for 10 minutes until the bubbles in the solution completely disappear. Then immerse the polypropylene in the solution, and let it stand for 72 hours at 25° C. under the condition of avoiding light to prepolymerize the mixed solu...

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Abstract

The invention discloses a method for preparing a porous coating on the surface of polypropylene. The method comprises the following steps: stirring acrylamide, a cross-linking agent, namely N,N-dimethyl bisacrylamide, a photoinitiator, namely 2-hydroxyl-4'-(2-hydroxyl ethyoxyl)-2-methyl propiophenone and a surfactant, namely sodium dodecyl benzene sulfonate for 10-30 minutes at a normal temperature, so as to obtain a mixed solution A; adding a phase splitting agent, namely polyethylene glycol into the mixed solution A, so as to obtain a mixed solution B, and adding dopamine, so as to obtain amixed solution C; performing ultrasonic treatment on the mixed solution C for 10 minutes, soaking polypropylene into the mixed solution C when bubbles in the mixed solution C are completely vanished,taking out the polypropylene from the mixed solution C, radiating for 10-60 seconds by using an ultraviolet point light source curing agent, soaking for 0.1-2 hours into an ethanol solution, taking out, and drying at a room temperature, thereby obtaining polypropylene of a porous surface structural coating. By using the simple and feasible method, the polypropylene of the porous structural coatingcan be prepared through soaking and curing, the coating can be solidly applied to the surface of the polypropylene, and a binding force can be up to 5.6 mN.

Description

technical field [0001] The invention relates to the field of chemical material preparation. Specifically relates to a preparation method for surface modification of polypropylene material by adopting a porous mixed coating of polyacrylamide and polydopamine. Background technique [0002] Polypropylene (PP) is a non-polar polymer material with good chemical stability, corrosion resistance, aging resistance and low cost, so it is a common material in industry and life. In practical applications, surface printing, processing, printing and dyeing of polypropylene materials all involve surface modification of polypropylene. Therefore, how to modify the surface of polypropylene in a more effective and economical way has always been a research hotspot. Commonly used polymer surface modification methods include chemical treatment, blending modification, surface grafting, gas phase oxidation, and plasma treatment. The surface activity of polypropylene is improved by one or a combi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08F283/06C08F220/56C08F222/38C08L23/12C08L51/08C08L79/04
CPCC08F283/06C08J7/0427C08J2323/12C08J2451/08C08J2479/04C08F220/56C08F222/385
Inventor 张天柱戴继东
Owner SOUTHEAST UNIV