In the fields of chemicals, coatings, inks and adhesives, Polymer Crosslinking Agent is a key component to achieve material performance upgrades. As one of Shenzhen U-Sunny's core products, AM-321 crosslinking agent is driving the industry towards high performance and sustainable development with its technical advantages and environmental protection characteristics.
1. The core role of Polymer Crosslinking Agent
Crosslinking agents connect linear polymer chains into a three-dimensional network structure through chemical bonds (covalent bonds or ionic bonds), thereby significantly improving the mechanical strength, heat resistance and chemical stability of the material. For example, sulfur crosslinking in rubber can enhance elasticity, while the use of diisopropylbenzene peroxide in polyethylene can optimize high temperature resistance. Recent studies have also shown that organic/metal ion dual crosslinking systems (such as phenolic resin and aluminum citrate composites) can break through the bottleneck of gel stability in high-temperature and low-permeability reservoirs.
2. Diversified application scenarios of crosslinkers
1. Coatings industry: dual demands for environmental protection and high performance
In coatings, crosslinkers greatly improve the water resistance, wear resistance and corrosion resistance of coatings by enhancing the crosslinking density of latex particles. For example, carbodiimide crosslinkers (such as the Carbolinker series) have become the first choice for water-based coatings due to their low VOC emissions and room temperature curing properties. AM-321 from Shenzhen U-Sunny is an acrylate crosslinker with low viscosity and high film-forming properties. It is suitable for anti-corrosion coatings and UV curing systems, balancing economy and performance.
2. Ink manufacturing: precise control of drying and resistance
In UV inks, photoinitiators (such as TPO or ITX) trigger crosslinking by absorbing ultraviolet rays to achieve rapid drying. Inorganic crosslinkers (such as ammonium zinc carbonate) provide heat resistance and alcohol resistance in water-based inks. It is important to note that the pH value is higher than 9 to ensure stability.
3. Adhesive field: balance between crosslinking density and flexibility
The amount of crosslinker directly affects the peel strength and moisture resistance of the adhesive. Studies have shown that metal salt crosslinkers (such as aluminum salts) achieve optimal strength at 2.15% addition, while excessive addition leads to performance degradation due to polarity imbalance. AM-321 can precisely control the crosslinking density in polyurethane adhesives by optimizing functionality (such as dual-functionality design), taking into account both hardness and flexibility.
3. Technical advantages of Shenzhen U-Sunny AM-321 crosslinker
AM-321 (TPGDA) is a crosslinker suitable for multiple scenarios. Its core advantages include:
Low volatility and low odor: meet strict environmental regulations (such as REACH);
Balanced performance: moderate glass transition temperature, suitable for efficient film formation of coatings, inks and adhesives;
Economical: compared with traditional isocyanate crosslinkers, it reduces raw material costs by 30%.
Application cases show that AM-321 can increase the peel strength to 7.0 N/30mm in automotive interior adhesives, and the moisture resistance time exceeds 240 hours.
Contact Shenzhen U-Sunny now to get customized solutions for AM-321 crosslinker and enable your products to take a step ahead in performance and sustainability!