m-Xylylenediamine (MXDA) is a class of aliphatic amine compound containing an aromatic ring. It is produced from m-xylene through ammoniation oxidation and hydrogenation. As a fundamental amine product, MXDA is widely used in epoxy resin curing agents. Its characteristics as an epoxy curing agent are as follows: the aliphatic primary amine group in its molecular structure allows it to be used as a room-temperature curing agent. Meanwhile, the benzene ring in the structure gives the cured product better heat resistance than aliphatic polyamines, along with excellent chemical resistance, while its irritation and toxicity are lower than those of ethylene amines. Typical Physical and Chemical Data of MXDA (For Reference Only): Model: MXDA Product Name: m-Xylylenediamine Appearance: Colorless transparent liquid Color (Gardner): 1.0 Max. Density: 1.048 ~ 1.056 Viscosity (cps/20℃): 6.8 Freezing Point (℃): 14.1 Active Hydrogen Equivalent: 34 The dosage of MXDA for Bisphenol A epoxy resin YLE-128 (epoxy equivalent 185) is approximately 16%-18%. The pot life is about 50 minutes at room temperature for 100g of epoxy resin YLE-128, and complete curing at room temperature takes about 7 days. Performance Characteristics of MXDA as an Epoxy Curing Agent: Colorless and transparent appearance, imposing no color burden on the cured product; Low viscosity, making it convenient to handle; Low active hydrogen equivalent, requiring a small addition amount; Excellent chemical resistance, showing great resistance to toluene and 10%wt sulfuric acid; Good thermal stability; Good water resistance; Good salt spray resistance. Application Examples of yolatech MXDA: Battery Sealing and Terminal Adhesives: MXDA can be used in battery sealing compounds and terminal adhesives (also known as red and black glue or marking glue), which are used for sealing and marking the positive and negative terminals of batteries. Since the adhesive layer is in direct contact with acid gas and liquid while often being subjected to external impact, the adhesive is required to have low viscosity, high fluidity, and excellent penetration. After curing, it must possess superior bonding strength, good sealing, excellent acid and alkali resistance, high hardness, and Excellent resistance to humid heat aging.. As a low-viscosity liquid that cures at room temperature, MXDA yields cured products with excellent heat and chemical resistance, perfectly meeting the performance requirements for battery sealing and terminal adhesives. Anti-corrosion Coatings: With its excellent resistance to acid, toluene, and salt spray, MXDA can be combined with epoxy resin for anti-corrosion coatings in bridge repair, pipeline coatings, ships, containers, and flooring. It performs particularly well in bonding adhesion in humid environments. Waterborne Epoxy Curing Agents: Modified into waterborne epoxy curing agents, MXDA can shorten the surface drying time of epoxy films and provide better gloss and hardness without affecting the impact resistance and flexibility of the coating. It is especially suitable for the preparation of waterborne anti-corrosion coatings. Construction Repairs: MXDA can be modified to prepare epoxy curing agents widely used for repairs in humid environments such as bridge construction. Other Applications: MXDA is also used in polyamide wax powder, nylon, pesticides, rubber, isocyanates, carbon fiber composites, and other fields.