1、Fabrication of a nonionic self
The 2K waterborne epoxy coating film prepared by the as-prepared nonionic self-emulsifiable curing agent and E51 displayed better thermal property, surface appearance, flexibility, impact resistance, adhesion, and chemical corrosion resistance.
2、Preparation of waterborne epoxy dispersion and its application in 2K
Herein we present experimental schemes of a reactive emulsifier and three waterborne epoxy dispersions prepared for waterborne epoxy coatings.
3、Preliminary Results on Preparation and Performance of a Self
Polyethylene glycol 1000 (PEG1000) and epoxy resin E20 were used to synthesize the E20/PEG1000 polymer (EP1K), which was later transformed into a self-emulsifying water-based epoxy curing agent by reacting with m-Xylylenediamine (MXDA).
4、Synthesis and properties of a nonionic water
Research and development of epoxy resin curing agents are preparing a new type of curing agent that can improve its resistance to moisture, heat, toughening, and strengthening.
5、Formulating High
rmance waterborne epoxy coatings cannot be formulated. We have structured this paper to emphasize preferred formulating concepts, and to identify specific materials (pigments, fillers, additives, etc.) which we or othe.
Synthesis and Properties of Self
Abstract: A novel self-emulsified waterborne epoxy curing agent was synthesized from single epoxy compound (AGE) as capping agent, the epoxy resin (E44) as chain extender and triethylene tetramine (TETA) as raw materials.
Formulating novel aqueous epoxy
In the first case, novel curing agent technology for use with liquid epoxy resins will be discussed. Benefits of this technology include formation of high performance, zero VOC coatings, with a visible end to the pot life and excellent anti-corrosive properties.
Preliminary Results on Preparation and Performance of a Self
Polyethylene glycol 1000 (PEG1000) and epoxy resin E20 were used to synthesize the E20/PEG1000 polymer (EP1K), which was later transformed into a self-emulsifying water-based epoxy curing agent by reacting with m-Xylylenediamine (MXDA).
Synthesis and properties of a nonionic water
A novel self-emulsifiable waterborne amine-terminated curing agent for epoxy resin based on glycidyl tertiary carboxylic ester (GTCE) was synthesized through three steps of addition...
High Performance Waterborne Coatings Based on Dispersions of a Solid
Most commercially available waterborne epoxy coat-ing systems are composed of a hydrophobic epoxy resin component and a hydrophilic, amine-functional curing agent.
In modern industrial production, epoxy resins are widely used in composites, coatings, electronic encapsulation, and other fields due to their excellent adhesive properties, mechanical strength, and chemical stability. traditional epoxy resin curing processes often involve the emission of volatile organic compounds (VOCs), which pose potential threats to the environment and human health. developing low-VOC or VOC-free waterborne epoxy curing agents has become a critical direction in the development of eco-friendly materials.
I. The Importance of Waterborne Epoxy Curing Agents
As a new type of eco-friendly material, waterborne epoxy curing agents do not use organic solvents during production, significantly reducing VOC emissions and complying with increasingly stringent environmental regulations globally. Additionally, waterborne epoxy curing agents exhibit excellent adhesion, good electrical insulation, and chemical resistance, making them ideal for manufacturing high-performance composites.
II. Production Methods for Waterborne Epoxy Curing Agents
The production of waterborne epoxy curing agents primarily involves two methods: the prepolymerization method and the addition method. The prepolymerization method generates prepolymers by reacting epoxy groups with polyols, followed by curing with an initiator. The addition method prepares prepolymers by gradually adding epoxy groups. Both methods have advantages and disadvantages but can produce waterborne epoxy curing agents that meet specific requirements.
III. Selection of Raw Materials
The selection of raw materials is crucial for producing waterborne epoxy curing agents. First, high-purity epoxy compounds must be used as the primary raw material to ensure stable product performance. Second, the choice of polyols is critical, as different polyols impart varying properties to the curing agent, such as viscosity and hardness. Additionally, auxiliary materials like catalysts and diluents must be carefully selected to guarantee the quality and performance of the final product.
IV. Control of Production Processes
During production, factors such as temperature, pressure, and stirring speed significantly impact the reaction rate of epoxy groups and the molecular weight of the product. Precision control of these parameters is key to producing high-quality waterborne epoxy curing agents. Furthermore, storage conditions and temperature/humidity control during transportation are essential to ensuring product quality.
V. Environmental Regulations and Certifications
With increasingly strict environmental regulations, manufacturers of waterborne epoxy curing agents must comply with standards such as the EU’s RoHS Directive and REACH Regulation. To enhance market competitiveness, companies also need to obtain certifications like ISO 9001 Quality Management System and SGS Test Reports, ensuring the safety and reliability of their products.
The production of waterborne epoxy curing agents is a complex process involving multidisciplinary knowledge. Every step, from raw material selection to process control, significantly affects the final product’s quality. As environmental awareness grows and technology advances, the production of waterborne epoxy curing agents will trend toward greater eco-friendliness and efficiency. In the future, we can confidently expect waterborne epoxy curing agents to showcase their unique advantages in more fields, contributing significantly to human society’s development.
