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A kind of preparation technology of nonionic water-based epoxy emulsifier

A water-based epoxy, non-ionic technology, applied in chemical instruments and methods, chemical/physical processes, dissolution, etc., can solve problems such as single structure, poor ability of epoxy resin, and inability to provide sufficient protection for dispersed resin particles , to achieve the effect of improving the stability of

Active Publication Date: 2021-03-19
海安常州大学高新技术研发中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In traditional non-ionic emulsifiers, the hydrophilic segments are mostly polyethylene glycol (PEG) with different molecular weights, and the structure is relatively simple. If the molecular weight of PEG is too high, it is easy to wrap the epoxy segment, and the ability to emulsify epoxy resin is poor. The particle size is large; the molecular weight of PEG is too low to provide sufficient protection for the dispersed resin particles, and it is easy to settle during storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 2 parts by mass of three (2-hydroxyethyl) isocyanurate, 10 parts by mass of polyethylene glycol 800, 3 parts by mass of glycidyl neodecanoate, 100 parts by mass of E-44 epoxy For the resin, the temperature was raised to 80°C under stirring conditions, 3 parts by mass of boron trifluoride ether was added, and the resin was reacted at 85°C until the epoxy value of the system was stable, and the first-stage polymerization reaction was completed.

[0017] Add 80 parts by mass of polyethylene glycol 6000 to the reactants of the first stage of polymerization, react at 85°C until the epoxy value of the system is stable, and cool the reaction materials to 30°C to obtain a nonionic water-based epoxy emulsifier.

Embodiment 2

[0027] In the reactor, add 1 mass part three (2-hydroxyethyl) isocyanurate, 15 mass parts polyethylene glycol 800, 2 mass parts glycidyl neodecanoate, 100 mass parts E-20 epoxy The temperature of the resin is raised to 80°C under stirring conditions, 1 mass part of boron trifluoride ether is added, and the reaction is carried out at 85°C until the epoxy value of the system is stable, and the first-stage polymerization reaction is completed.

[0028] Add 100 parts by mass of polyethylene glycol 6000 to the reactants in the first stage of polymerization, react at 85°C until the epoxy value of the system reaches a stable value, and cool the reaction materials to 30°C to obtain a nonionic water-based epoxy emulsifier.

Embodiment 3

[0030] In the reactor, add 3 parts by mass of three (2-hydroxyethyl) isocyanurate, 5 parts by mass of polyethylene glycol 800, 5 parts by mass of glycidyl neodecanoate, 100 parts by mass of E-51 epoxy Resin, heated up to 80°C under stirring condition, added 2 parts by mass of boron trifluoride ether, reacted at 85°C until the epoxy value of the system was stable, and completed the first-stage polymerization reaction.

[0031] Add 60 parts by mass of polyethylene glycol 6000 to the reactants of the first stage of polymerization, react at 85°C until the epoxy value of the system reaches a stable value, and cool the reaction materials to 30°C to obtain a nonionic water-based epoxy emulsifier.

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PUM

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Abstract

A preparation process of a non-ionic water-based epoxy emulsifier, relating to the technical field of polymer material production, the invention prevents the entanglement of PEG long chains by introducing a large steric hindrance structure between the hydrophobic end and the hydrophilic end of the emulsifier structure , making it stretch freely in the water phase, thus improving the stability of the water-based epoxy emulsion and improving the emulsifying performance of the epoxy emulsifier.

Description

technical field [0001] The invention relates to the technical field of polymer material production, in particular to the technical field of preparation of nonionic water-based epoxy emulsifiers. Background technique [0002] Epoxy resin has excellent properties, strong adhesion, low curing shrinkage, and stable chemical properties. It is widely used in coatings, textiles, chemicals, electronics, construction and other industries. Due to the low polarity of epoxy resin itself, a large amount of organic solvent needs to be added during use. When the epoxy resin is cured, the organic solvent escapes to the surrounding environment, causing serious pollution and potential safety hazards. Water-based epoxy emulsion is a dispersion dispersed in the water phase in the form of particles, droplets or colloids. It has the advantages of low VOC content, convenient use, safety and reliability. At present, the mechanical phase inversion method is the main method for large-scale preparati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00B01F17/52B01F17/42C09K23/42C09K23/52
CPCC08G81/00C09K23/16
Inventor 方永勤许亮
Owner 海安常州大学高新技术研发中心