1、Study on a new cementitious material waterborne modified epoxy resin
Traditional waterborne resin could not be effectively solidified in the oil wells. A new waterborne modified resin system was developed by controlling hydrophily. The resin improved mechanical properties of cement by crosslinking and filling. The durability of resin in the wells depends on its glass transition temperature.
2、Preparation and Performance Enhancements of Low
The effects of epoxy resin and water glass on the compressive properties, expansion rate, structure of the cell, and maximum reaction temperature of the grouting materials were also investigated.
3、Hybrid resins from polyisocyanate, epoxy resin and water glass
Epoxy resin (EP) was selected as potential reactive emulsifier for polyurea-based thermoset resins produced from polyisocyanate/water glass/emulsifier systems.
4、Recyclable High‐Strength Epoxy Resin by Polyimine/Glass Modification
Experimental results showed that the addition of APTMS-modified glass fibers (AGF) improved the tensile strength and modulus of the AGF/EP/PI composites. When the content of AGF is 10%, the tensile strength and modulus of the composite reach 63.3 and 301 MPa, respectively, an increase of 27% and 25% compared to the EP/PI matrix.
Preparation and Performance Enhancements of Low
In this study, with the addition of water glass (WG), a prepolymer was prepared by epoxy resin reacted with isocyanate to form modified polyurethane. The effects of epoxy resin and water glass on the compressive properties, expansion rate, structure of the cell, and maximum reaction temperature of the grouting materials we
HongLi®2075 Waterborne Modified Epoxy Resin
HongLi®2075 is a water-based epoxy resin made from high-quality solid epoxy resin, featuring fast drying, high solid content, small particle size, water resistance, salt spray resistance, acid and alkali resistance, and good storage stability.
Hybrid resins from polyisocyanate, epoxy resin and water glass
Epoxy resin (EP) was selected as potential reactive emulsifier for polyurea-based thermoset resins produced from polyisocyanate/water glass/emulsifier systems.
Waterborne Epoxy/Acrylic Resins Stabilized through the Neutralization
In this work, a class of stable waterborne epoxy/acrylic resins with high performance is prepared through the simple blending of modified epoxy and acrylic copolymers.
Development of waterborne epoxy
Water-based coating has gained much attention globally due to environmental issues. This work aims to develop a waterborne epoxy coating incorporated with modified natural rubber (NR) latex...
Improvement of wear
Waterborne epoxy (WEP) coatings have been widely applied in the industry due to their environmental friendliness. However, the original defects of WEP coatings significantly affect their mechanical properties and corrosive resistance.
In the field of modern materials science, epoxy resin is highly favored for its excellent mechanical properties, electrical insulation, chemical stability, and ease of processing. its brittleness and hygroscopicity limit its potential applications. To overcome these limitations, researchers have developed methods for modifying epoxy resin with water glass, aiming to improve its physical and chemical properties by introducing this additive.
Water glass, a colloidal solution formed by reacting sodium silicate with an alkali, exhibits strong adhesive properties and low viscosity. Incorporating water glass into epoxy resin significantly enhances the material’s toughness and crack resistance while reducing shrinkage during the curing process, thereby minimizing crack formation. Additionally, water glass improves the resin matrix’s water resistance and chemical resistance.
The process of modifying epoxy resin with water glass involves several key steps: First, a water glass solution is prepared by reacting sodium hydroxide with aqueous sodium silicate. Next, the water glass solution is thoroughly mixed with epoxy resin to form a pre-mixed material. The mixture is then cured in an oven, where precise control of temperature and time is critical. Finally, post-treatment of the cured samples is performed to achieve the desired mechanical properties.
Water glass-modified epoxy resin has broad applications, including but not limited to electronic packaging materials, composite matrixes, building structure reinforcement materials, and high-performance coatings. For example, in electronic packaging, it can be used to manufacture highly reliable circuit boards and chip encapsulants due to its superior electrical insulation and mechanical strength. In composites, water glass-modified epoxy resin serves as a matrix material that can combine with fibers or particles to produce lightweight yet high-strength composites.
The mechanical performance of water glass-modified epoxy resin is substantially improved compared to traditional epoxy systems. Tensile strength, flexural strength, and impact toughness are all enhanced, thanks to the increased toughness of the resin matrix and overall mechanical performance. the modified resin demonstrates better heat resistance and humidity resistance, making it particularly valuable for high-temperature applications.
challenges remain. The addition of water glass increases the resin’s viscosity, potentially complicating processing. Additionally, water glass may alter the curing speed and temperature, requiring careful adjustment of process parameters in practical applications.
Despite these challenges, water glass-modified epoxy resin remains a promising material. With ongoing technological advancements and deeper research, it is poised to play a more significant role in future scientific and technological development. Further optimization could make this innovative material a preferred choice for diverse fields, offering greater convenience and innovation for human life and work.
