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A kind of water-based epoxy ester with good water resistance and corrosion resistance and preparation method thereof

A technology of corrosion resistance and water resistance, applied in the field of water-based epoxy ester and its preparation, can solve the problems of poor water resistance, weather resistance and corrosion resistance, and achieve the effect of improving adhesion and corrosion resistance

Active Publication Date: 2018-12-07
绍兴长木新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"After analysis and actual use, although the drying speed of the epoxy ester resin modified by acrylic acid is improved, the water resistance, weather resistance and corrosion resistance are relatively poor.

Method used

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  • A kind of water-based epoxy ester with good water resistance and corrosion resistance and preparation method thereof
  • A kind of water-based epoxy ester with good water resistance and corrosion resistance and preparation method thereof
  • A kind of water-based epoxy ester with good water resistance and corrosion resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] A water-based epoxy ester with good water resistance and corrosion resistance, including linoleic acid, epoxy resin E-20, epoxy resin E-03, benzoic acid, phthalic anhydride, antioxidant, organosiloxane coupling agent and ethylene glycol butyl ether; in parts by mass, the linoleic acid: 29 parts; Epoxy resin E-20: 14 parts; Epoxy resin E-03: 10 parts; Benzoic acid: 6 parts; Phthalic anhydride: 3 parts; antioxidant: 0.2 parts; organosiloxane coupling agent: 3 parts; 19.5 parts of ethylene glycol butyl ether.

[0023] Wherein, the epoxy resin E-20 is bisphenol A epoxy resin (E-20).

[0024] The epoxy resin E-03 is bisphenol A type epoxy resin (E-03).

[0025] The organosiloxane coupling agent is KH-550 or KH-560. The KH-550 is γ-aminopropyltriethoxysilane; the KH-560 is γ-glycidyloxypropyltriethoxysilane.

[0026] The preparation process of a water-based epoxy ester with good water resistance and corrosion resistance is as follows:

[0027] Step 1. Add 29 parts of lino...

Embodiment approach 2

[0058] A water-based epoxy ester with good water resistance and corrosion resistance, in parts by mass, the linoleic acid: 32 parts; epoxy resin E-20: 16 parts; epoxy resin E-03: 12.5 parts; Benzoic acid: 7.5 parts; Phthalic anhydride: 3.8 parts; Antioxidant: 0.2 parts; Organosiloxane coupling agent: 4 parts; 25 parts of ethylene glycol butyl ether. After adopting the above proportioning, the heat preservation time of step 4 of the preparation method is set to 4 hours. After the product is prepared, the product effect is tested to meet the requirements, and it is applied to water-based industrial anti-corrosion coatings. The prepared water-based industrial coatings have good water resistance, corrosion resistance and other properties.

Embodiment approach 3

[0060] A water-based epoxy ester with good water resistance and corrosion resistance, in parts by mass, the linoleic acid: 26 parts; epoxy resin E-20: 12 parts; epoxy resin E-03: 8.5 parts; Benzoic acid: 4.8 parts; Phthalic anhydride: 2.2 parts; Antioxidant: 0.2 parts; Organosiloxane coupling agent: 2 parts; 18 parts of ethylene glycol butyl ether. After adopting the above proportioning, the heat preservation time of step 4 of the preparation method is set to 3 hours. After the product is prepared, the product effect is tested to meet the requirements, and it is applied to water-based industrial anti-corrosion coatings. The prepared water-based industrial coatings have good water resistance, corrosion resistance and other properties.

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Abstract

The invention relates to the technical field of water-based paint and particularly relates to a water-based epoxy ester with good water resistance and corrosion resistance. The water-based epoxy ester is prepared by the following steps: putting the following components into a reaction kettle in parts by weight: 26-32 parts of linolenic acid, 12-16 parts of epoxy resin E-20, 8.5-12.5 parts of epoxy resin E-03, 4.8-7.5 parts of benzoic acid, 2.2-3.8 parts of phthalic anhydride and 0.2 part of an antioxidant; raising the temperature to 120 DEG C and starting to stir; raising the temperature to 160 DEG C and keeping the heat for 1h; raising the temperature to 180 DEG C and keeping the heat for 1h; raising the temperature to 240 DEG C and keeping the heat for 3h-4h; starting to cool to 160 DEG C; adding 2-4 parts of an organic siloxane coupling agent and keeping the heat for 1h; and cooling to 120 DEG C and adding 18-25 parts of 2-butoxy ethanol and stirring uniformly to obtain a product. By taking organic siloxane to react with hydroxyl and carboxyl in the epoxy resin and introducing an organic siloxane chain segment into a water-based epoxy resin system, the prepared water-based epoxy ester has high water resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a water-based epoxy ester with good water resistance and corrosion resistance and a preparation method thereof. Background technique [0002] Water-based resins commonly used in water-based coatings include: water-based epoxy resin, water-based polyurethane, water-based acrylic resin, water-based alkyd resin, etc. Waterborne epoxy resin refers to a stable dispersion system prepared by dispersing epoxy resin in the form of particles or droplets in a dispersion medium with water as the continuous phase. Since the epoxy resin is a thermosetting resin with a linear structure, a water-based epoxy curing agent must be added before construction, and a chemical crosslinking reaction occurs at room temperature. It forms an insoluble and infusible space network structure, showing excellent performance. In addition to the many advantages of solvent-based epoxy resin coatings,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D5/08C08G59/14C08G59/16
CPCC08G59/1438C08G59/1472C08L2205/025C09D5/08C09D163/10C08L63/10
Inventor 崔文国梁震李加青
Owner 绍兴长木新材料科技有限公司