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Epoxy-group-containing fluorosilicone modified acrylate emulsion and preparation method thereof

A kind of acrylate, fluorosilicon modified technology

Active Publication Date: 2015-03-04
SUZHOU DEJIE MEMBRANE MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the limitations of acrylate emulsions in the prior art, to simultaneously introduce epoxy groups and fluorosilicone into acrylate emulsions for modification, and to provide a fluorine compound containing epoxy groups. Silicone modified acrylate emulsion

Method used

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  • Epoxy-group-containing fluorosilicone modified acrylate emulsion and preparation method thereof
  • Epoxy-group-containing fluorosilicone modified acrylate emulsion and preparation method thereof
  • Epoxy-group-containing fluorosilicone modified acrylate emulsion and preparation method thereof

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preparation example Construction

[0049] A preparation method of a fluorosilicone acrylate emulsion containing epoxy groups, specifically comprising the following steps:

[0050] 1) Wash methyl methacrylate and butyl acrylate with 5% sodium hydroxide solution to remove the polymerization inhibitor; mix vinyl trimethoxysiloxane with washed methyl methacrylate and butyl acrylate, Add fluorine-containing emulsifiers FS-62 and TX-10, initiator potassium persulfate, and pH regulator potassium hydroxide, and pre-emulsify with a high-shear emulsifier for 15 minutes to obtain a pre-emulsion;

[0051] 2) Take 1 / 3 of the pre-emulsion, raise the temperature to 75-80°C, and stir under the protection of nitrogen at a stirring speed of 200r / min; the remaining 2 / 3 of the pre-emulsion is mixed with trifluoropropylmethylcyclotrisiloxane alkane and 3-glycidyl etheroxypropylmethyltrimethoxysilane for shearing and mixing, and the reactants after shearing were dropped into the reaction system within 3 hours; after all the drops we...

Embodiment 1

[0054] Mix 9.5 grams of methyl methacrylate, 19.0 grams of butyl acrylate, 2.04 grams of vinyltrimethoxysiloxane, 0.8 grams of TX-10, 1.7 grams of fluorine-containing anionic emulsifier, 0.1998 grams of APS and 150 grams of distilled water for high Cut for 15 minutes, take out 1 / 3 of the emulsion and add it to a 500mL four-neck round-bottomed flask, turn on nitrogen protection, heat to 80°C under stirring, add 4.5 grams of 1,3,5-trimethyl-1 to the remaining 2 / 3 of the emulsion , 3,5-tris(3,3,3-trifluoropropyl)cyclotrisiloxane and 2.2 g of 3-glycidyloxypropylmethyltrimethoxysilane were subjected to high shear for 10 minutes at Drop it into the reaction flask within 3 hours, raise the temperature to 85°C after all the drops are completed, continue the heat preservation reaction for 3 hours, then stir and cool down to room temperature, discharge and filter to obtain the target product.

[0055] Carry out NMR and infrared characterization to embodiment 1 gained product, obtain fi...

Embodiment 2

[0059] Mix 9.5 grams of methyl methacrylate, 10.0 grams of butyl acrylate, 1.84 grams of vinyl triethoxysiloxane, 0.8 grams of TX-10, 1.7 grams of fluorine-containing anionic emulsifier, 0.1998 grams of APS and 150 grams of distilled water High shear for 15 minutes, take out 1 / 3 of the emulsion and add it to a 500mL four-neck round bottom flask, turn on nitrogen protection, heat to 80°C under stirring, add 3.1 grams of 1,3,5-trimethyl- 1,3,5-Tris(3,3,3-trifluoropropyl)cyclotrisiloxane and 1.4 g of 3-glycidyloxypropylmethyldiethoxysilane, high shear for 10 min , drop it into the reaction flask within 3 hours, raise the temperature to 85°C after all the drops are completed, continue the heat preservation reaction for 3 hours, then stir and cool down to room temperature, discharge and filter to obtain the target product.

[0060] The contact angle obtained by spraying the emulsion obtained in Example 2 on the epoxy resin is 102.5°, and the hydrophobicity is very good, which basic...

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Abstract

The invention discloses an epoxy-group-containing fluorosilicone modified acrylate emulsion and a preparation method thereof. An epoxy group and fluorosilicone are introduced into an acrylate emulsion for modification. According to the epoxy-group-containing fluorosilicone modified acrylate emulsion and the preparation method, a semi-starved state of a semi-continuous method is adopted, so that the stability of a polymeric system is high; the production efficiency can be improved; the gel fraction is reduced due to monomer delay dropping and with the adoption of a silane hydrolysis inhibitor; and the polymerization stability is improved.

Description

technical field [0001] The invention belongs to the field of acrylate modification, and in particular relates to a fluorine-silicon-modified acrylate emulsion containing epoxy groups and a preparation method thereof by using an emulsion polymerization method. The fluorine-silicon-modified acrylate emulsion containing epoxy groups It can be used as a waterproof and oil-proof treatment agent for epoxy resin. Background technique [0002] Polyacrylate emulsions have excellent transparency, film-forming properties, oil resistance, weather resistance, mechanical stability and adhesion, and are rich in raw materials and low in cost. They are widely used in coatings, textiles, leather, paper, Adhesives and other fields. However, its stain resistance and water repellency are not ideal, and its cold resistance and heat resistance are poor, and it is prone to the phenomenon of "hot sticking and cold brittleness", which limits its further application. The organosilicon component has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/28C08F230/08C08F8/42C08J7/04C08L63/00
Inventor 谢洪德许琳胡军翟银枫
Owner SUZHOU DEJIE MEMBRANE MATERIAL SCI & TECH
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