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Hydrophobic-surface treatment agent and preparation method thereof

A hydrophobic surface treatment agent technology, applied in the field of hydrophobic surface treatment agent and its preparation, can solve the problems of expensive fluorine-containing low surface energy reagents, complex preparation process, weak matrix binding force, etc., and meet the requirements of fast and simple production, The method has the advantages of simple operation and low production cost

Inactive Publication Date: 2013-07-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that conventional organosilicon-based low-surface-energy reagents have no reactive functional groups and have weak binding force with the substrate, while fluorine-containing low-surface-energy reagents are expensive, pollute seriously, and have complicated preparation processes

Method used

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  • Hydrophobic-surface treatment agent and preparation method thereof
  • Hydrophobic-surface treatment agent and preparation method thereof
  • Hydrophobic-surface treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Raw materials

[0031] 1,1,1,3,5,5,5-heptamethyltrisiloxane; vinyltrimethoxysilane; catalyst: isopropanol solution containing chloroplatinic acid 6.0mmol / L; activated carbon.

[0032] Wherein, the molar ratio of 1,1,1,3,5,5,5-heptamethyltrisiloxane to vinyltrimethoxysilane is 1:1.5, and the consumption of catalyst is 1,1,1,3, 0.2‰ of the total weight of 5,5,5-heptamethyltrisiloxane and vinyltrimethoxysilane.

[0033] 2. Preparation

[0034] Step 1: Add 1,1,1,3,5,5,5-heptamethyltrisiloxane and catalyst to the reactor at 35°C;

[0035] The second step: add vinyltrimethoxysilane dropwise to the mixture obtained in the first step; control the dropwise flow rate of vinyltrimethoxysilane to be 1mol / h, and the reaction time is 10h after the dropwise addition is completed;

[0036] The third step: after the second step reaction is completed, add activated carbon to the above mixture at 65°C, the weight of activated carbon is 15% of the solution mass, and perform adsorptio...

Embodiment 2

[0043] 1. Raw materials

[0044] 1,1,1,3,5,5,5-heptamethyltrisiloxane; vinyltrimethoxysilane; catalyst: isopropanol solution containing chloroplatinic acid 6.0mmol / L; activated carbon.

[0045] Wherein, the molar ratio of 1,1,1,3,5,5,5-heptamethyltrisiloxane to vinyltrimethoxysilane is 1:0.5, and the consumption of catalyst is 1,1,1,3, 0.1‰ of the total weight of 5,5,5-heptamethyltrisiloxane and vinyltrimethoxysilane.

[0046] 2. Preparation

[0047] Step 1: Add 1,1,1,3,5,5,5-heptamethyltrisiloxane and catalyst to the reactor at 55°C;

[0048] The second step: add vinyltrimethoxysilane dropwise to the mixture obtained in the first step; control the dropwise flow rate of vinyltrimethoxysilane to 0.3mol / h, and the reaction time is 20h after the dropwise addition is completed;

[0049] The third step: after the second step reaction is completed, add activated carbon to the above mixture at 45°C, the weight of activated carbon is 5% of the solution mass, and perform adsorption ...

Embodiment 3

[0052] 1. Raw materials

[0053] 1,1,1,3,5,5,5-heptamethyltrisiloxane; vinyltriethoxysilane; catalyst: isopropanol solution containing chloroplatinic acid 6.0mmol / L; activated carbon.

[0054] Wherein, the molar ratio of 1,1,1,3,5,5,5-heptamethyltrisiloxane to vinyltrimethoxysilane is 1:1.75, and the consumption of catalyst is 1,1,1,3, 0.5‰ of the total weight of 5,5,5-heptamethyltrisiloxane and vinyltrimethoxysilane.

[0055] 2. Preparation

[0056] Step 1: Add 1,1,1,3,5,5,5-heptamethyltrisiloxane and catalyst to the reactor at 65°C;

[0057] The second step: add vinyltrimethoxysilane dropwise to the mixture obtained in the first step; control the dropwise flow rate of vinyltrimethoxysilane to be 15mol / h, and the reaction time is 5h after the dropwise addition is completed;

[0058] Step 3: After the reaction in the second step is completed, add activated carbon to the above mixture at 35°C, the weight of activated carbon is 10% of the solution mass, and perform adsorption...

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Abstract

The invention discloses a hydrophobic-surface treatment agent and a preparation method thereof. The preparation method comprises adding 1,1,1,3,5,5,5-heptamethyltrisiloxane and a catalyst into a reactor under 35-65 DEG C, adding vinyl trimethoxysilane or vinyl triethoxysilane in drops, after the reaction, adding active carbon for adsorption processing, filtering, and distilling filtrate under a reduced pressure to obtain the hydrophobic-surface treatment agent. According to the invention, the 1,1,1,3,5,5,5-heptamethyltrisiloxane with high-activity silicon-hydrogen bonds and the vinyl silane with double bonds are used as raw materials, a high-yield hydrosilylation reaction is utilized, and the product is prepared by a one-step synthesis method. The agent is high in reaction activity of function groups, low in surface energy, mild and controllable in reaction conditions, high in product yield and low in production cost.

Description

technical field [0001] The invention relates to a hydrophobic surface treatment agent and a preparation method thereof, belonging to the technical field of chemical synthesis and application. Background technique [0002] Organosilicon compounds have an inorganic Si-O-Si structure and an organic C-H structure. The compound itself has excellent inorganic-organic hybrid material properties, and has excellent high and low temperature resistance, weather resistance, and chemical corrosion resistance. At the same time, because the side group connected to the Si atom of the main chain is usually a group with a large space volume such as a methyl group or a phenyl group, it has a shielding effect on the main chain, so that the compound has an extremely low surface energy, so it is used as a surface active compound. Agents, pesticide extenders, etc. are widely used. Due to the shielding effect of side groups on the main chain, organosilicon reagents have extremely low surface energ...

Claims

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Application Information

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IPC IPC(8): C07F7/18
Inventor 江振林王朝生吉鹏汤廉王华平李建武季诚昌
Owner DONGHUA UNIV
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