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Cotton fabric surface TiO2-BC/PDMS hydrophobic coating and preparation method thereof

A technology of hydrophobic coating and cotton fabric, applied in the field of cotton fabric, can solve the problems of low secondary utilization rate, high cost, inability to optimize superhydrophobicity and photocatalytic performance at the same time, etc.

Pending Publication Date: 2021-09-03
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these carriers have defects such as high cost, complicated preparation, and low secondary utilization rate. At the same time, only hydrophobic materials cannot optimize superhydrophobic and photocatalytic properties at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Cotton fabric surface TiO2-BC/PDMS hydrophobic coating and preparation method thereof
  • Cotton fabric surface TiO2-BC/PDMS hydrophobic coating and preparation method thereof
  • Cotton fabric surface TiO2-BC/PDMS hydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] TiO in this example 2 -The preparation method of BC / PDMS hydrophobic coating comprises the following steps (as image 3 shown):

[0035] S1: Mix 10ml of absolute ethanol and 10ml of tetrabutyl titanate with magnetic force for 30 minutes, then add dilute hydrochloric acid drop by drop until the pH value is less than 3, and then add 2ml of double distilled water drop by drop after uniform stirring.

[0036] When tetrabutyl titanate is hydrolyzed, the solution system gradually becomes slightly viscous. This is because the hydrolysis reaction speed is faster in the hydrolysis process of TBTO, and the polycondensation reaction speed is also accelerated, and the polymerization degree and crosslinking degree of the hydrolyzed polycondensate increase. Large, when the equilibrium is reached, the solution will form a polymer with a network space structure, and with the completion of the reaction, the polymer will gradually form a transparent colloid.

[0037] S2: Add 0.5g of ba...

Embodiment 2

[0067] TiO in this example 2 -The preparation method of BC / PDMS hydrophobic coating comprises the following steps:

[0068] S1: After mixing 10ml of absolute ethanol and 10ml of tetrabutyl titanate with magnetic force for 25 minutes, add dilute hydrochloric acid drop by drop until the pH value is less than 3, and then add 1.75ml of double distilled water drop by drop after uniform stirring;

[0069] S2: Add 0.48g of bamboo charcoal powder while stirring, and let it stand to get TiO 2 -BC-sol;

[0070] S3: TiO 2 After drying in the oven, the BC sol is heated up to 495°C every 29 minutes from room temperature in a muffle furnace, kept for 118 minutes and then continuously raised to 600°C, cooled naturally, and ground to produce a slightly shiny TiO 2 - BC composite particles;

[0071] S4: Take the prepared TiO 2 -BC composite material 0.5g, isopropanol 20ml, 2g vinyltrimethoxysiloxane (VTMO), hydrophobic polymer PDMS, in the form of simple blending, to TiO 2 -BC particles ...

Embodiment 3

[0073] TiO in this example 2 -The preparation method of BC / PDMS hydrophobic coating comprises the following steps:

[0074] S1: After mixing 10ml of absolute ethanol and 10ml of tetrabutyl titanate with magnetic force for 35 minutes, add dilute hydrochloric acid drop by drop until the pH value is less than 3, and then add 2.25ml of double distilled water drop by drop after uniform stirring;

[0075] S2: Add 0.52g of bamboo charcoal powder while stirring, and let it stand to get TiO 2 -BC-sol;

[0076] S3: TiO 2 -BC sol was dried in an oven and then heated up to 505°C in stages every 31 minutes from room temperature in a muffle furnace, kept for 122 minutes and then continued to heat up to 800°C, cooled naturally, and ground to produce slightly shiny TiO 2 - BC composite particles;

[0077] S4: Take the prepared TiO 2 -BC composite material 0.5g, isopropanol 20ml, 2g vinyltrimethoxysiloxane (VTMO), hydrophobic polymer PDMS, in the form of simple blending, to TiO 2 -BC par...

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Abstract

The invention discloses a cotton fabric surface TiO2-BC / PDMS hydrophobic coating and a preparation method thereof, and belongs to the technical field of cotton fabrics. The titanium dioxide loaded bamboo charcoal nano composite hydrophobic coating is prepared by adopting a solution-sol method in a way of blending a fluoride-free hydrophobic organic silicon material and a porous nano composite material, and the method is an effective method for preparing the super-hydrophobic photocatalytic fabric. Theoretical support and practical significance are provided for further research on reduction of chemical consumption, photocatalytic degradation of organic pollutants and reduction of water resource waste.

Description

technical field [0001] The invention relates to the technical field of cotton fabrics, in particular to a cotton fabric surface TiO 2 -BC / PDMS hydrophobic coating and its preparation method. Background technique [0002] Cotton is a traditional textile raw material. Because of its good comfort and environmental protection, it is widely used in the weaving of cotton fabrics and filling of fabrics. However, cotton fabrics cannot take advantage of economical and environmental advantages, mainly due to the limitation of hydrophobic properties. This is because each glucose residue in the cotton fiber polymer contains three hydrophilic group hydroxyl groups (-OH), which have a strong affinity with water molecules. This is also one of the reasons why cotton fabric has a strong wettability. [0003] In recent years, affected by the "lotus leaf effect", various new superhydrophobic materials have emerged and developed rapidly. The research on modified cotton fabrics has attracted ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06N3/00D06N3/04
CPCD06N3/047D06N3/0061D06N3/0063D06N3/0015D06N2201/042D06N2209/142
Inventor 张春明吴昭莉
Owner QINGDAO UNIV
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