Water-soluble epoxy resin emulsion and curing agent

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【1】Product Introduction to Water-Soluble Epoxy Resin Emulsions: Epoxy resins possess advantages such as high hardness, strong adhesion, and good chemical resistance, and are widely used in industries such as coatings, composite materials, the electronics and electrical industry, and adhesives. However, bisphenol A-type epoxy resins and phenolic epoxy resins have high viscosity, and a large amount of organic solvents or reactive diluents must be added during use. During the curing process, these organic solvents and most reactive diluents evaporate and are released into the environment, causing severe pollution. To address this environmental issue related to epoxy resins, the company has independently developed efficient emulsifiers for emulsifying bisphenol A-type and phenolic epoxy resins, as well as a technology for producing water-soluble epoxy resins; these technologies have been granted as patented inventions. The water-soluble epoxy resins prepared using bisphenol A-type epoxy resin are HyPer WE1051 and HyPer WE1044 ； The water-soluble epoxy resins prepared using phenolic epoxy resin are HyPer WF1051 and HyPer WF1044. Performance characteristics: After curing, the product exhibits excellent alkali resistance, water resistance, high wear resistance, and outstanding adhesion. It also possesses properties that oil-soluble epoxy coatings lack, such as extremely low VOC levels, environmental friendliness, easy cleaning, safe application, and no environmental pollution. Technical specifications of typical water-soluble epoxy resin emulsions
Parameter | HyPer WE1051 | HyPer WE1044 | HyPer WF1051 | HyPer WF1044
Appearance | Milky white | Milky white | Milky white | Milky white
Solid content, % | 48–52 | 40–50 | 40–50 | 35–45
Acid value, mgKOH/g | 6–8 | 6–8 | 6–8 | 6–8
Density, g/cm3 | 1.06–1.08 | 1.04–1.06 | 1.08–1.10 | 1.04–1.06
Epoxy value, mol/100g | 0.23–0.25 | 0.20–0.22 | 0.21–0.23 | 0.20–0.22
Viscosity (25°C), cp | 40–60 | 120–140 | 40–60 | 140–160
VOC content, % | ≤5 | ≤5 | ≤5 | ≤5
Main structure | Bisphenol A-type epoxy resin | Phenolic epoxy resin
Typical applications | Can be used to produce water-soluble epoxy coatings, water-based epoxy floor coatings, water-based epoxy concrete, alkali-resistant self-cleaning sealing primers for concrete, and impermeable materials. (1) A zinc-rich coating based on water-based epoxies and curing agents, combined with modified zinc powder, is used; it has a total solid content of over 80%, with zinc powder accounting for 90% of its composition. This coating offers excellent cathodic protection properties as well as good mechanical and physical properties, making it one of the new types of \"environmentally friendly\" heavy-duty anti-corrosion coatings. (2) The anti-rust coating prepared using water-soluble epoxy resins possesses excellent mechanical and physical properties as well as chemical resistance and salt spray resistance; the conventional properties of its coating film are roughly on par with those of solvent-based epoxy resin coatings. (3) Floor coatings formulated with water-based epoxy resins exhibit good wear resistance as well as excellent resistance to chemical corrosion, making them ideal \"environmentally friendly\" indoor floor coatings. 2.2 Product Introduction of Water-Soluble Epoxy Resin Emulsion HyPer WEC: The WEC101 type is a self-emulsifying water-based epoxy curing agent that can cure at room temperature or at moderate temperatures; it can be used in combination with liquid epoxy resins or water-based epoxy resin emulsions to form a film. Cures when mixed with liquid epoxy resin, forming a film quickly. It possesses excellent corrosion resistance, solvent resistance, wear resistance, and a high gloss level, and can be used to formulate highly transparent and glossy water-based epoxy resin varnishes. It can be used in water-based epoxy floor coatings and water-based epoxy anti-corrosion primers. Easy to apply, odorless, and environmentally friendly. WEC102 is a self-emulsifying water-based epoxy curing agent that can be used in combination with the water-based epoxy emulsions produced by our company. It offers the advantage of a long working time at room temperature, with a duration of 8–12 hours. It cures at medium to high temperatures, resulting in a paint film with high hardness, good thermal stability, and excellent chemical resistance. Easy to apply, odorless, and environmentally friendly. It can be used in high-performance water-based industrial coatings. The WEC101 type can be used in combination with liquid epoxy resin or the water-based epoxy resin emulsions produced by our company to manufacture various water-based epoxy resin coatings. The WEC102 type, when used in combination with the corresponding water-based epoxy resin emulsions produced by our company, is used to manufacture various water-based epoxy resin coatings. Technical specifications: Item WEC101 WEC102; Curing condition: room curing, medium and high temperature curing; Appearance: light yellow transparent liquid, light yellow transparent liquid; Solid content (by weight)%: 45-60, 45-50; Viscosity (Pa·s): 1-5.0, 0.20-3.0; Density (kg/m3): 1.03-1.08, 1.03-1.09; AHEW: 220-260, 280-350. Note: Can be mixed directly with epoxy. Heat-resistant. Water-based epoxy resin refers to a stable dispersion system in which epoxy resin is dispersed in the form of particles or droplets within a dispersion medium whose continuous phase is water. Since epoxy resin is a thermosetting resin with a linear structure, an aqueous epoxy curing agent must be added before application; this allows for a chemical cross-linking reaction to occur at room temperature. Once cured, the epoxy resin loses its original soluble and meltable properties and transforms into an insoluble and infusible three-dimensional network structure, thereby exhibiting excellent properties. Water-based epoxy resin coatings possess many of the advantages of solvent-based epoxy resin coatings: firstly, they have strong adaptability, offering excellent adhesion to a wide range of substrates; the cured coating exhibits superior corrosion resistance and chemical resistance, as well as low shrinkage, high hardness, good wear resistance, and excellent electrical insulation properties ； Secondly, it has excellent environmental performance; it contains no organic solvents or only low levels of volatile organic compounds, thus avoiding air pollution and meeting the current requirements for environmental protection ； Third is true water-based formulation, using water as the dispersion medium; it is inexpensive, odorless, non-flammable, and its safety during storage, transportation, and use is significantly improved ； Fourth, it has good operability: water-based epoxy resin coatings are easy to apply, the application tools can be washed directly with water, they can cure in room temperature and humid conditions, have an appropriate curing time, and ensure a high degree of cross-linking. This is beyond the reach of ordinary water-based acrylic coatings and water-based polyurethane coatings.