Preparation method of super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material

A technology of cross-linked polysiloxane and polysilsesquioxane, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of poor durability, poor softness, and hard hand feeling of superhydrophobic fabrics, and achieve the goal of improving the hand feel. Effect

Active Publication Date: 2015-01-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102321974A adopts layer by layer self-assembly method to make a kind of stable superhydrophobic anti-ultraviolet textile, but the steps are cumbersome
It can be seen that the finishing process of existing superhydr

Method used

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  • Preparation method of super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material
  • Preparation method of super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material
  • Preparation method of super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] (1) Add 60g structure as shown in formula (II) in the three-neck bottle that device has thermometer, reflux condenser and electric stirrer, R=OH, viscosity is 950mPa·s, epoxy value is 0.04mmol / g, The side Ep-PDMS-Vi and 10.2g structure with ethylene value of 0.15mmol / g are shown in formula (Ⅲ) (R′=CH 3 ) side hydrogen-containing silicone oil (viscosity is 140mPa s, Si-H content is 0.08%), the molar ratio of the C=C double bond in the side Ep-PDMS-Vi to the Si-H bond in the side hydrogen-containing silicone oil is 1.1: 1. Stir evenly and heat to 85°C, then add 2.1 mg of chloroplatinic acid (catalyst) and keep it warm for 4 hours to obtain a colorless and transparent viscous liquid, which is a cross-linked epoxy side group and reactive Si-OH group with low surface energy. Dipolysiloxane (obtaining 69.5g), the structure is shown in formula (I), R=OH, R'=CH 3 , the viscosity at room temperature is 1150mPa·s, and the epoxy value is 0.033mmol / g;

[0037]...

Example Embodiment

[0038] (3) Add the PSQ prepared in step (2) and 20g of isopropanol to the cross-linked polysiloxane system (69.5g) prepared in step (1), install a reflux condenser, and heat the system to 45°C , heat preservation reaction for 2.5h, and then distilled under reduced pressure (pressure 0.075MPa, temperature 65°C, time 1-1.5h) to remove solvent and low boilers to obtain a translucent viscous liquid, that is, superhydrophobic crosslinked polysiloxane - Polysilsesquioxane nanosphere hybrid material. Example 2

[0039] (1) Add 60g structure as shown in formula (II) in the three-neck bottle that device has thermometer, reflux condenser and electric stirrer, R=OH, viscosity is 768mPa·s, epoxy value is 0.06mmol / g, The structure of the side Ep-PDMS-Vi and 4.4g with an ethylene value of 0.08mmol / g is shown in formula (Ⅲ) (R'=CH 2 CH 2 CF 3 ) side hydrogen-containing silicone oil (viscosity is 280mPa s, Si-H content is 0.1%), the molar ratio of the C=C double bond in the side Ep-PDMS-V...

Example Embodiment

[0042] Example 3

[0043] (1) Add 60g of structure as shown in formula (II) in the three-neck bottle that device has thermometer, reflux condenser and electric stirrer, R=OCH 2 CH 3 , the viscosity is 1070mPa·s, the epoxy value is 0.04mmol / g, the ethylene value is 0.10mmol / g side Ep-PDMS-Vi and 5.5g side hydrogen-containing silicone oil (R′= CH 3 , the viscosity is 125mPa s, the Si-H content is 0.1%), the molar ratio of the C=C double bond in the side Ep-PDMS-Vi to the Si-H bond in the side hydrogen-containing silicone oil is 1.1:1, stir evenly and heat to 85°C, then add 2.0 mg of chloroplatinic acid (catalyst) and keep it warm for 4 hours to obtain a colorless and transparent viscous liquid, that is, a low surface energy cross-linked polysiloxane containing epoxy side groups and reactive Si-OH groups ( Obtain 65.1g), structure as shown in formula (I), the viscosity at room temperature is 1700mPa s, epoxy value is 0.035mmol / g;

[0044] (2) add 500g distilled water, 1.60gKO...

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Abstract

The invention discloses a preparation method of a super-hydrophobic cross linked polysiloxane-polysilsesquioxane nanosphere hybrid material. The super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material is obtained by carrying out in situ condensation reaction on a reactive group Si-OH in a crosslinked structure polysiloxane of low surface energy epoxy-containing side group and Si-OH on the surface of a polysilsesquioxane nanosphere, and the super-hydrophobic crosslinked polysiloxane-polysilsesquioxane nanosphere hybrid material is applicable to formation of a firm super-hydrophobicity film on the surface of multiple substrates of cotton fabric, polyester fabric, leather and the like.

Description

technical field [0001] The invention belongs to the field of polymer hybrid materials, and relates to a preparation method of a superhydrophobic crosslinked polysiloxane / polysilsesquioxane nanosphere hybrid material. Background technique [0002] In recent years, polymer-inorganic nano-hybrid materials have attracted much attention because they can combine the toughness and ease of processing of polymers with the high thermal stability and high strength of inorganic nano-materials, and can significantly improve the comprehensive properties of materials. The design, controllable synthesis and functionalization of new polymer-inorganic nano-hybrid materials have become a research hotspot in the research of biomimetic preparation of superhydrophobic surfaces. [0003] Polysilsesquioxane nanospheres (Polysisesquioxane, PSQ) is a new type of organic-inorganic hybrid material, which is a kind of polyorganosilicon compound with repeated Si-O bonds as the main chain and three-dimens...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G77/16C08G77/08D06M15/643
Inventor 许伟郝丽芬
Owner SHAANXI UNIV OF SCI & TECH
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