Preparation method and application of durable super-hydrophobic finishing agent

A super-hydrophobic, finishing agent technology, used in fiber processing, textiles and papermaking, etc., can solve the problems of poor applicability, long finishing time, rough surface, etc., to improve hydrophobicity and washability, and low application cost. , the effect of reducing the hydrophilicity

Inactive Publication Date: 2015-06-03
NANXIONG DING CHENG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these materials are inorganic nanoparticles, which have poor affinity with fibers, so the durability of the prepared superhydrophobic fabric is not good.
In addition, when performing low surface energy treatment on substrates, most methods require the use of solvents to dissolve low surface energy substances. On the one hand, this causes solvent pollution. On the other hand, low surface energy substances only bond on the fiber surface, so they are not resistant to friction. , the superhydrophobic performance is not durable
However, Chinese patents such as CN 102965910 B and CN 103074768 A roughen the surface of the polyester fabric by treating the polyester fabric with strong alkali, which will cause great damage to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of above-mentioned durable superhydrophobic finishing agent, its preparation step is:

[0021] Step 1: Into a 500ml three-necked bottle connected with a stirrer, a thermometer and an addition funnel, add metered C16-18 mixed olefins, vinyltriethoxysilane, hydrogen-containing silicone oil and platinum catalyst in sequence, and raise the temperature to 80 ~110℃, react for 3~10 hours, and obtain the modified long-chain alkyl alkoxy polysiloxane;

[0022] The second step: 100g of the modified silicone oil obtained in the first step, 2g of self-made active cationic emulsifier and 148g of water, first add the emulsifier into the water and use a high-speed shear emulsifier to homogenize, and then add the oil phase (ie silicone oil) to the water The emulsification is carried out in the phase, and the emulsification is carried out while adding. The oil phase should be added in small amounts and multiple times. The active content of the emulsified emulsion ...

Embodiment 1

[0030] Example 1: Synthesis of long-chain alkyl alkoxy siloxane, add metered C16-18 mixed olefins, vinyl triethoxy silane in sequence into a 500ml three-necked flask connected with a stirrer, thermometer and addition funnel , hydrogen-containing silicone oil and a platinum catalyst, raise the temperature to 80-110° C., and react for 3-10 hours to obtain a colorless and transparent viscous liquid, that is, a modified long-chain alkyl alkoxy polysiloxane.

Embodiment 2

[0031] Example 2: Preparation of modified long-chain alkyl alkoxy polysiloxane emulsion. The modified silicone oil obtained in Example 1 is emulsified with a self-made active cationic emulsifier. The emulsification method: weigh 100g of silicone oil, 2g of emulsifier and 148g of water, first add the emulsifier into the water and use a high-speed shear emulsifier to homogenize, then add the oil phase (ie silicone oil) into the water phase for emulsification, emulsify while adding, the oil phase should be added in small amounts and multiple times. The active matter content of the emulsified liquid after final emulsification is 40%.

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PUM

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Abstract

The invention relates to a durable super-hydrophobic finishing agent. The finishing agent comprises components as follows: long-chain alkyl alkoxy polysiloxane, a self-prepared active cationic emulsifier and organic tin. The long-chain alkyl alkoxy polysiloxane is taken as a main active component, an organic tin catalyst and the self-prepared active cationic emulsifier are taken as auxiliary components, and three active groups exist in the structure of the long-chain alkyl alkoxy polysiloxane, are hydrolyzed through heating under the action of water and are interlinked to form a net structure, so that the hydrophilicity is greatly reducer, and meanwhile, the washability is improved; the organic tin can promote combination of organosilicon with fibers, so that the hydrophobicity and the washability are further improved; the self-prepared active cationic emulsifier can be decomposed under a heating condition to produce another hydrophobic substance, and the substance and the long-chain alkyl alkoxy polysiloxane have a synergistic waterproof effect, so that the super-hydrophobic effect is realized. The preparation method and the application have the characteristics that the technology is simple, the application cost is low and the like.

Description

technical field [0001] The invention belongs to the field of fabric waterproof finishing agents, and relates to a preparation method and application of a durable superhydrophobic finishing agent. Background technique [0002] Superhydrophobic fabrics have special wettability, that is, the contact angle of water droplets on the surface of the fabric is greater than 150°, and it is easy to roll on its surface. This special property of super-hydrophobic fabric makes it have a "lotus leaf effect", which is manifested in the fact that water droplets will take away the dirt on the surface during the rolling process, thereby achieving self-cleaning effect and avoiding water damage to the fiber. The impregnation of the matrix degrades the aging thus prolonging the life of the fabric. Superhydrophobic fabrics are widely used in industrial production, military products and daily life. [0003] The idea of ​​preparing super-hydrophobic surfaces in many patents is: first build a micro...

Claims

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Application Information

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IPC IPC(8): D06M15/643
Inventor 周宇鹏周涛滕青艺
Owner NANXIONG DING CHENG NEW MATERIAL TECH CO LTD
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