1、Fabrication of a nonionic self
In this article, we introduce polypropylene glycol diglycidyl ether (PPGDGE) as a hydrophilic segment and soft segment, not only greatly increasing the molecular weight of the adduct to reduce the volatility but also improving the toughness of the cured film.
2、Preparation of waterborne epoxy dispersion and its application in 2K
By exploring the curing mechanism, the superior performances of the coatings film prepared by waterborne epoxy dispersion and waterborne epoxy curing agent are presented. The nanometer-sized and stable waterborne epoxy dispersions are achieved by phase inversion method using the reactive emulsifier. 1. Introduction.
3、Synthesis and properties of a nonionic water
In this study, we synthesized a B-A-B type epoxy compound with a long hydrophobic alkyl chain connected to the intermediate nitrogen atom, using ethylene glycol diglycidyl ether and 3,4-dimethoxyaniline as raw materials. Subsequently, the epoxy compound was sealed with triethylenetetramine.
4、Novel waterborne epoxy curing agent production process
technical field [0001] The invention relates to the production of a self-emulsifying non-ionic water-based epoxy curing agent, in particular to a production process of a novel water-based epoxy curing agent.
Preliminary Results on Preparation and Performance of a Self
In this article, PEG1000 was utilized to construct self-emulsifying EP1K system, and then PEG1K was added to MXDA which converted poisonous MXDA into a non-toxic water-based epoxy curing agent. Moreover, the curing agent also had a good self-emulsifying function.
Preparation and properties of nonionic waterborne epoxy resin
The film coating was prepared by reacting waterborne epoxy dispersions with waterborne epoxy curing agent, while the waterborne epoxy disper-sions was prepared by emulsifying E44 with E31-P2000-E emulsifier.
Fabrication of a nonionic self
In this work, the stable and uniform graphene oxide modified emulsifying epoxy resin curing agents (WPA@GOs) were firstly prepared by intercalation polymerization. Subsequently, WPA@GO was...
Preliminary Results on Preparation and Performance of a Self
In this article, PEG1000 was utilized to construct self-emulsifying EP1K system, and then PEG1K was added to MXDA which converted poisonous MXDA into a non-toxic water-based epoxy curing...
Fabrication of a nonionic self
In this article, we introduce polypropylene glycol diglycidyl ether (PPGDGE) as a hydrophilic segment and soft segment, not only greatly increasing the molecular weight of the adduct to reduce the volatility but also improving the toughness of the cured film.
Effect of new nonionic curing agent on curing kinetics and mechanical
First, polyethylenepolyamine was mixed with epoxy resin, and then reacted with carboxyl terminated polyether alcohol to prepare amide amine compound. Finally, the target product was obtained by end capping with single epoxy compound.
In modern industrial manufacturing, epoxy resins are widely used in electronics, aviation, automotive, construction, and other fields due to their excellent physical and chemical properties. Among these, non-ionic waterborne epoxy curing agents, as one of the key raw materials for epoxy resin applications, play a critical role in optimizing product quality and reducing costs. This article explores the production process of non-ionic waterborne epoxy curing agents.
1. Selection and Pretreatment of Raw Materials
The production of non-ionic waterborne epoxy curing agents begins with the selection of appropriate raw materials. These typically include epoxy resins, curing agents (such as amine or acid anhydride compounds), solvents, and various additives. The choice of epoxy resin directly impacts the performance and application effects of the curing agent, while the type of curing agent determines the curing speed and final product properties.
After selecting the raw materials, pretreatment is required. This includes drying the epoxy resin to remove moisture, grinding and sieving the curing agent to achieve uniform particle size distribution, and distilling the solvents to eliminate volatile components, ensuring environmental friendliness and stability of the product.
2. Mixing and Reaction
The pretreated raw materials are fed into a mixer for thorough blending. This step is crucial to ensure sufficient contact between the epoxy resin and curing agent for chemical reactions. During mixing, the ratio of materials must be precisely controlled to meet the designed performance requirements of the final product.
The mixed materials are then transferred to a reaction vessel, where they undergo cross-linking reactions under controlled temperature and pressure. In this process, the epoxy resin and curing agent form a stable network structure. The duration and temperature control of the reaction are vital to achieving complete curing.
3. Filtration and Cleaning
After the reaction, the mixture undergoes filtration and cleaning to obtain purified products. Filtration removes solid particles and impurities generated during the reaction, while cleaning eliminates residual solvents and chemicals from the material.
4. Post-Treatment
The final step involves post-treating the curing agent to enhance its performance. This includes drying to remove moisture (preventing caking during storage and use), crushing to refine particle size for easier dispersion, and packaging to ensure safe transportation and storage.
5. Quality Control and Testing
Quality control and testing are indispensable throughout the production process. This includes raw material inspection, real-time monitoring during production, and periodic testing of product performance. Strict quality control ensures that the final product meets expected standards and customer demands.
The production process of non-ionic waterborne epoxy curing agents is complex and meticulous, involving multiple stages such as raw material selection, pretreatment, mixing, reaction, filtration, cleaning, post-treatment, and quality control. Only through scientific management and stringent operations can stable, high-performance curing agents be produced. With advancements in technology and evolving market demands, future production processes will continue to optimize and develop to meet higher efficiency and quality requirements.
