Reactive super-hydrophobic TiO2 microsphere and preparation method and application thereof

A super-hydrophobic and reactive technology, which is applied in the preparation of microspheres, microcapsule preparations, wear-resistant fibers, etc., can solve the problems of performance degradation, easy drop of nanoparticles, poor friction resistance and durability, etc., and prolong the service life , low cost and simple preparation process

Inactive Publication Date: 2019-08-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, titanium dioxide itself is hydrophilic, and when it finishes the fabric, it simply attaches to the surface of the fabric, so its friction resistance and durability are poor. When subjected to strong friction, the nanoparticles are easy to fall off, resulting in performance degradation

Method used

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  • Reactive super-hydrophobic TiO2 microsphere and preparation method and application thereof
  • Reactive super-hydrophobic TiO2 microsphere and preparation method and application thereof
  • Reactive super-hydrophobic TiO2 microsphere and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of hybrid titanium sol: Weigh 150.0g of hydrochloric acid (1mol / L) and 55.0g of deionized water and mix to form component A; weigh 80.0g of tetra-n-butyl titanate and 20.0g of absolute ethanol, Stir mechanically at 150r / min for 3 minutes to evenly prepare component B;

[0045] (2) Add component B and component A dropwise to the ethanol solution at room temperature at 25°C at a rate of 2 drops / second to prepare a titanium sol until components A and B are completely added to 100.0 g of ethanol aqueous solution ;

[0046] (3) Add ammoniacal liquor (1mol / L) dropwise to adjust the pH of the system to 4;

[0047] (4) Measure 100mL of titanium dioxide sol at 25°C, add 4mL of octyltriethoxysilane (OTES), and react for 4h; then add 4mL of γ-glycidyl etheroxypropyltrimethoxysilane (KH560), and react for 4h, Stir mechanically at a speed of 500r / min to complete the modification of titanium dioxide;

[0048] (5) Use a centrifuge to centrifuge the titanium sol at 1...

Embodiment 2

[0050](1) Preparation of hybrid titanium sol: Weigh 150.0g of hydrochloric acid (1mol / L) and 55.0g of deionized water and mix to form component A; weigh 80.0g of tetra-n-butyl titanate and 20.0g of absolute ethanol, Stir mechanically at 150r / min for 3 minutes to evenly prepare component B;

[0051] (2) Add component B and component A dropwise to the ethanol solution at room temperature at 25°C at a rate of 2 drops / second to prepare a titanium sol until components A and B are completely added to 100.0 g of ethanol aqueous solution ;

[0052] (3) Add ammoniacal liquor (1mol / L) dropwise to adjust the pH of the system to 4;

[0053] (4) Measure 100mL of titanium dioxide sol at 25°C, add a mixture of 2mL of dodecyltriethoxysilane (DTEOS) and 2mL of γ-chloropropyltriethoxysilane (CPTS), and react for 4 hours; then add 4mL of γ -glycidyl etheroxypropyltrimethoxysilane (KH560), reacted for 4h, and mechanically stirred at a speed of 500r / min to complete the modification of titanium d...

Embodiment 3

[0056] (1) Preparation of hybrid titanium sol: Weigh 150.0g hydrochloric acid (1mol / L) and 55.0g deionized water, mix and make component A; weigh 80.0g tetra-n-butyl titanate and 20.0g absolute ethanol, Stir mechanically at 150r / min for 3 minutes to evenly prepare component B;

[0057] (2) Add component B and component A dropwise to the ethanol solution at room temperature at 25°C at a rate of 2 drops / second to prepare a titanium sol until components A and B are completely added to 100.0 g of ethanol aqueous solution ;

[0058] (3) Add ammoniacal liquor (1mol / L) dropwise to adjust the pH of the system to 4;

[0059] (4) Measure 100mL of titanium sol at 25°C, add 4mL of methyltriethoxysilane (MTES), and react for 4h; then add 4mL of γ-glycidyl etheroxypropyltrimethoxysilane (KH560), and react for 4h, Stir mechanically at a speed of 500r / min to complete the modification of titanium dioxide;

[0060] (5) Use a centrifuge to centrifuge the titanium sol at 1000r / min for 10 minut...

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Abstract

The invention discloses a reactive super-hydrophobic TiO2 microsphere and a preparation method and application thereof and belongs to the field of nano polymer materials. Firstly, TiO2 sol is synthesized by a sol-gel method, and the pH value is regulated by hydrochloric acid, so that tetra-n-butyl titanate is hydrolyzed to prepare titanium sol; then, a silane coupling agent with an epoxy group isused for modifying TiO2, so that the TiO2 can be better combined with a fabric while the TiO2 is endowed with a super-hydrophobic effect, and has excellent durability. The preparation method of the TiO2 microsphere with super-hydrophobicity is simple in process, and has the potential application value in the fields of preparation of hydrophobic fabrics, sweat wicking and perspiration and the like.

Description

technical field [0001] The invention belongs to the field of nano-polymer materials, in particular to a reactive superhydrophobic TiO 2 Microspheres and their preparation methods and applications. Background technique [0002] Nowadays, metal oxides are widely used in daily life, especially in the field of catalysis. Metal oxides are very important types of catalysts. Now the research on metal oxides has been widely carried out, and they have been developed and applied to all walks of life. After the metal oxides are nanosized, they have obtained better catalytic performance. It is foreseeable that, An important development direction of catalysts will be the research on metal oxides. [0003] Among various metal oxides, nano-TiO 2 It has excellent performance and is an important material that can be widely used in daily life. Nano-TiO 2 The outstanding advantages of TiO are: low cost, high efficiency, energy saving, clean and non-toxic, complete degradation of organic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02D06M11/46
CPCB01J13/02D06M11/46D06M2101/06D06M2200/12D06M2200/35
Inventor 殷允杰张鹏飞梁家宁庞书宇李嘉懿王潮霞
Owner JIANGNAN UNIV
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