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Environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material and preparation method thereof

A technology of polysilsesquioxane and superhydrophobic coating, which is applied in the direction of plant fibers, textiles and papermaking, and liquid-repellent fibers, etc., can solve the problem of less PSQ nanosphere hybrid materials, and achieve improved washing resistance performance effect

Active Publication Date: 2019-06-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the application of PSQ nanosphere hybrid materials in superhydrophobic coatings.

Method used

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  • Environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material and preparation method thereof
  • Environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material and preparation method thereof
  • Environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material and preparation method thereof

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preparation example Construction

[0030] The invention relates to a preparation method of polymethyl / long-chain alkyl silsesquioxane emulsion, which is applied to the preparation of environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material, through layer by layer self- Assembly technology applies it in the finishing of cotton fabrics.

[0031] Specifically include the following steps:

[0032] Step 1: Add sodium dodecylsulfonate, Tween-80, alkali catalyst and distilled water into the reaction kettle, and stir at room temperature (15-25°C) for 30-40min; sodium dodecylsulfonate and Tween-80 are Compound emulsifier, the mass ratio is 1:1, the mass ratio of compound emulsifier to distilled water is 1: (100-150), and the amount of alkali catalyst per 1L of distilled water is 0.025-0.1mol;

[0033] Then add methylsilane dropwise to the system, control the drop rate to 20 drops / min, react at room temperature for 30 minutes after the drop, then start to add long-chain alkyl silane dropwise...

Embodiment 1

[0046] (1) Accurately weigh 0.20g of sodium dodecylsulfonate, 0.20g of Tween80, 0.1g of NaOH and 50.00g of deionized water, add them into the reaction kettle, and stir for 30min at room temperature at 15°C. Add 4.90 g of methyltriethoxysilane dropwise to the system through a constant pressure dropping funnel, control the dropping rate (20 drops / min), react at room temperature for 30 minutes after the dropping, and then start dropping 1.00 g of ten Dialkyltriethoxysilane was kept warm and stirred for 8 hours to obtain a light blue translucent liquid, which was a monodisperse PLMSQ nano-hybrid emulsion (average particle size 50.58 nm, PDI 0.125).

[0047] (2) Immerse the natural cotton fabric in the γ-glycidyl etheroxypropyltrimethoxysilane bath solution with a mass percentage concentration of 1% (adjust pH=5-6 with hydrochloric acid) for 0.5 minutes, take out the cloth sample, and Bake at 100°C for 10 minutes.

[0048] (3) Immerse the cloth sample treated in (2) into the PLMSQ...

Embodiment 2

[0051] (1) Accurately weigh 0.22g of sodium dodecylsulfonate, 0.22g of Tween80, 0.15g of KOH and 50.00g of deionized water, and add them in sequence to a three-necked bottle equipped with a thermometer, reflux device and electric stirrer, at room temperature of 20°C , stirred for 35min. Add 5.71g of methylethoxysilane dropwise to the system through a constant pressure dropping funnel, control the dropping rate (20 drops / min), react at room temperature for 30min after the dropping, and then start dropping 1.39g of hexadecane at the same dropping rate Alkyltrimethoxysilane, continue to keep warm and stir for 10h to obtain a light blue translucent liquid, which is a monodisperse PLMSQ emulsion (average particle size is 65.97, PDI is 0.173).

[0052] (2) Immerse the natural cotton fabric in the bath solution of γ-glycidyl etheroxypropyl triethoxysilane with a mass percentage concentration of 3% (adjust pH=5-6 with hydrochloric acid) for 1 min, take out the cloth sample, and Bake ...

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Abstract

The invention relates to an environmentally-friendly polysilsesquioxane nano-hybrid super-hydrophobic coating material and a preparation method thereof. The method comprises the steps of firstly preparing a hydrophobic monodisperse poly-long-chain alkyl / polymethylsilsesquioxane (PLMSQ) nanosphere hybrid emulsion through emulsion polymerization; adopting reactive silane, a PLMSQ emulsion and hydrophobic silane as construction elements and constructing a durable super-hydrophobic hybrid coating on the surface of a natural cotton fabric by using a layer-by-layer self-assembly technology. The durability of the super-hydrophobic coating is improved through the action of the reactive silane and a cotton fiber matrix and condensation between Si-OH on the surfaces of PLMSQ nanospheres and Si-OH in the silane. The preparation method is simple, green and environment-friendly, large-area film preparation can be achieved, and according to the prepared super-hydrophobic coating, a cotton fabric matrix has good super-hydrophobic property and excellent wash resistance.

Description

technical field [0001] The invention relates to a coating material, in particular to an environment-friendly polysilsesquioxane nano-hybrid superhydrophobic coating material and a preparation method thereof. Background technique [0002] In recent years, a superhydrophobic fabric with anti-bonding, anti-fouling, and self-cleaning functions has been favored by consumers. It has broad application prospects in high-end clothing, sportswear, windbreakers, raincoats, down jackets, and medical protective clothing. Improve the grade and added value of products. Therefore, the preparation and application performance research of biomimetic superhydrophobic fabrics has become one of the research hotspots in the fields of chemistry and materials. [0003] In the past ten years, the artificial biomimetic construction of superhydrophobic fabric surface technology has achieved rapid development and major breakthroughs, and various novel high-tech preparation methods have emerged, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/643D06M101/06
CPCD06M15/643D06M2101/06D06M2200/12
Inventor 郝丽芬裴萌萌许伟杨锐妮
Owner SHAANXI UNIV OF SCI & TECH
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