1、Investigation of Adsorption and Young’s Modulus of Epoxy Resin–Sand

The objective was to gain insights into the interactions between the sand surface and the epoxy resin polymers. The results demonstrated that DGEDDS formed a higher number of hydrogen bonds on the sand surface, leading to stronger intermolecular interactions compared to the other two resins.

2、Synthesis and Property Analysis of a Novel Epoxy Composite Curing Agent

The EP composite curing agents for curing sand can effectively improve the mechanical properties of soft sand, and therefore, it has great application value for coastal engineering constructions in cold or rainy seasons.

3、Comprehensive performance study of materials after innovative utilizing

In this paper used loess (LS) and river sand (RS) which were lower cost and more readily available, mixed with epoxy resin to make a new epoxy mortar system.

4、Journal of Applied Polymer Science

To transform epoxy resins into crosslinked networks with desirable thermal and mechanical properties, the resins must be cured with a curing agent. This review encompasses recent developments using bio-based epoxy resins and bio-based epoxy curing agents.

Chemical sand production control: a review of materials, methods and

The polymers used in chemical sand control mainly include epoxy resin, furan resin, phenolic resin, and polyurethane. Epoxy resin is widely used due to its low cost, high strength, and long curing time (Tabar et al., 2021).

Exploration and Application of Synthetic Epoxy Curing

Raw Material Selection: The first step in preparing Lishui epoxy resin curing agents is selecting appropriate raw materials, including epoxy resin, curing agents, thinners, and other additives.

Investigation of Adsorption and Young's Modulus of Epoxy

摘要： Epoxy resins exhibit outstanding curability, durability, and environmental compatibility, rendering them extensively utilized in the realm of engineering curing. Nevertheless, the current curing mechanism of epoxy-based resins in cohesion with sand remains inadequately elucidated, significantly impeding their applicability within the domain of soil curing. This study employed ...

A critical review of dynamic bonds containing curing agents

Particular emphasis is given to synthesis approaches and curing performances of intrinsically recyclable epoxy curing agents for the development of next-generation epoxy thermosets.

A critical review of dynamic bonds containing curing agents for epoxy

Investigated the mechanical, thermomechanical, thermal, and recycling properties of the epoxy thermosets cured by developed curing agents. Addressed the challenges, opportunities and emerging trends in the field.

An experimental study of epoxy

In response to this challenge, this study investigates the application of a novel polymer nanofluid for chemical consolidation in clay-rich sandstone reservoirs, an area of exploration yet to be fully tapped.

In modern industrial and construction fields, epoxy resin is widely used in composites, adhesives, coatings, and other areas due to its excellent physical and chemical properties. To achieve these superior performances, epoxy resin must be effectively mixed with curing agents to initiate its curing reaction. In this process, polymer sand, as a filler with good fillability and fluidity, is commonly employed to dilute the epoxy resin, improve processability, reduce costs, and enhance the mechanical strength and wear resistance of the final products.

The blending of polymer sand with epoxy curing agents is a critical step in epoxy resin curing technology. By precisely controlling the ratio of polymer sand to epoxy resin, the properties of the cured material can be optimized to meet specific application requirements. This article discusses the topic from three aspects: the properties of polymer sand, the characteristics of epoxy resin, and their mixing process.

1. Properties of Polymer Sand and Its Impact on Epoxy Curing

Polymer sand is a granular material made of high-molecular-weight compounds, characterized by excellent fillability and fluidity. In epoxy resin systems, polymer sand fills microscopic gaps, reducing the formation of air bubbles and pores, thereby improving the material’s uniformity and compactness. Additionally, the addition of polymer sand lowers the viscosity of the epoxy resin, facilitating its spread over molds or workpiece surfaces and simplifying subsequent shaping processes.

excessive polymer sand does not proportionally enhance the performance of epoxy resin. Overloading may lead to internal cracks in the cured material, compromising its toughness and compressive strength. the dosage of polymer sand must be carefully selected based on specific application scenarios and performance requirements.

2. Characteristics of Epoxy Resin and Its Impact on the Curing Process

Epoxy resin is a thermosetting resin containing abundant epoxide groups in its molecular structure. During curing, these groups undergo cross-linking reactions to form a three-dimensional network structure, endowing the material with exceptional mechanical properties, chemical resistance, and dimensional stability. epoxy resin cures relatively slowly and tends to become hard and brittle after curing, which limits its applications in certain fields.

3. Mixing Process of Polymer Sand and Epoxy Curing Agents

The mixing process of polymer sand and epoxy resin is crucial to the final product’s performance. First, the epoxy resin is proportioned and slowly poured into a container with polymer sand while continuously stirring to prevent localized over-curing. As polymer sand is added, the resin thickens until it reaches the desired working consistency. Finally, accelerators or catalysts may be added to speed up the curing reaction, enabling the material to rapidly attain the required hardness and strength.

4. Practical Applications of Polymer Sand-Epoxy Curing Agent Systems

This technology has been widely applied in practice. For example, in the aerospace industry, epoxy-based composites are prized for their lightweight and high-strength properties. Here, polymer sand not only acts as a diluent but also improves the overall performance of the composites. In automotive manufacturing, epoxy adhesives are used for bonding vehicle components, while polymer sand enhances the adhesive’s filling capacity and bonding strength.

The integration of polymer sand with epoxy curing agents involves complex chemical interactions and material properties. By precisely controlling their ratio, the performance of the cured material can be finely tuned. In the future, with the development of new materials and increasing application demands, this technology will continue to play a vital role, providing more efficient and environmentally friendly solutions across industries.