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Preparation method of fluorosilicone non-ionic surfactant

A non-ionic surface, active agent technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problem of less fluorosilicon non-ionic surfactants

Inactive Publication Date: 2018-03-20
JIUJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, so far, there are few research reports on fluorosilicone nonionic surfactants. In view of its excellent physical and chemical properties, the research on its synthesis method and its performance has certain theoretical and application value.

Method used

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  • Preparation method of fluorosilicone non-ionic surfactant
  • Preparation method of fluorosilicone non-ionic surfactant
  • Preparation method of fluorosilicone non-ionic surfactant

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Experimental program
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Embodiment

[0023] Low hydrogen-containing silicone oil PMHS [2.5g, n(Si-H)=4.95mmol], NF2[1.31g, n(C=C)=2.48mmol], F6[3.62g, n(C=C)=2.48 mmol] and toluene 10mL were added in a 100mL three-necked round-bottomed flask, then a certain amount of Karstedt catalyst with a concentration of 16.1g / L was added, connected with a condensing device, a magnetic stirring device and a thermometer, heated in an oil bath, and after a period of reaction, sampling and analysis Hydrosilylation reaction conversion rate until the conversion rate is substantially constant to end the reaction.

[0024] After the reaction, a yellow transparent solution was obtained, and the toluene was removed by rotary evaporation at 35°C, and then dried in a vacuum oven at 50°C for 4 hours to further remove residual toluene and unreacted volatile components to obtain a yellow Viscous liquid, the synthesis route of PF2F6 is as follows:

[0025]

[0026] characterize

[0027] FT-IR characterization: the purified PF2F6 was pr...

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Abstract

The invention discloses a preparation method of a fluorosilicone non-ionic surfactant. The fluorosilicone non-ionic surfactant PF2F6 is prepared by taking hydrogen-containing silicone oil (PMHS), N-methyl-N-allyl-2-perfluoro-2-methyl-3-oxo-hexanamide (NF2) and allyl polyether (F6) as raw materials and carrying out a hydrosilylation reaction on the raw material in presence of a Karstedt catalyst. Experimental results show that when the ratio of n (PMHS) to n (NF2) to n (F6) is equal to 2 to 0.7 to 1.3, the minimum values of cmc and gamma cmc are respectively 0.13g / L and 22.8mN / m, and the surface properties are the best; when a contact angle is gradually decreased and the ratio of n (PMHS) to n (NF2) to n (F6) is equal to 2 to 0.4 to 1.6, the minimum value of the contact angle is 41.1 degrees, and the wettability is the best.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of a fluorosilicon nonionic surfactant. Background technique [0002] Fluorosilicone nonionic surfactant is a new type of surface active agent with Si-O-Si as the main chain, grafted with fluorine-containing hydrophobic groups and hydrophilic groups such as polyoxyethylene or polyoxypropylene on the side chain or both ends. agent. Fluorosilicone nonionic surfactants combine the advantages of fluorocarbon surfactants and silicone surfactants, and have unique properties compared with traditional surfactants. They have become a research hotspot in the field of materials and are widely used in Textile, oil field, building materials, rubber and aerospace and other fields. [0003] In the prior art, Bongartz uses C 6 h 12 o 6 (inositol), HO(CH 2 CH 2 O) 2 CH 2 CH=CH 2 and C 6 f 13 I synthesized a fluorine-containing nonionic surfactant as a raw mater...

Claims

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Application Information

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IPC IPC(8): C08G77/46B01F17/54B01F17/52B01F17/42C09K23/42C09K23/52C09K23/54
CPCC08G77/46C09K23/00
Inventor 叶志刚占昌朝曹小华
Owner JIUJIANG UNIVERSITY
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