Dibromonitrilopropionamide (alias dibromocyanoacetamide, DBNPA for short) is a new and efficient bactericidal algaecide and water treatment agent. The material has the advantages of high-efficiency broad spectrum, easy degradation, no residual residue, no pollution to the environment, and at the same time,

Among household cleaning products, dishwashing liquid is a powerful assistant in removing grease stains from tableware and kitchen utensils. However, due to the large amount of water and organic nutrients in its composition,

Waterborne polyurethane coating antibacterial and antifungal agents are chemical additives added to waterborne polyurethane coatings to inhibit or kill bacteria, mold and other microorganisms, prevent the coating from moldy and deteriorating, and protect the coating and substrate from microbial erosion. This type of additive achieves anti-mold and antibacterial effects by disrupting the cellular structure of microorganisms, interfering with metabolic processes, or forming protective films. Its core functions, common types, and practical applications are as follows

Adding antibacterial agents in additive manufacturing (3D printing) can significantly enhance the functionality and safety of printed products, especially in fields with strict hygiene requirements such as medical care, food packaging, and public health, where it holds significant application value. The following is a detailed analysis of the core role of antibacterial agents in additive manufacturing and their specific application scenarios: I. The Core Role of Antibacterial Agents Inhibit the growth and reproduction of microorganisms Antibacterial agents directly kill or inhibit the activity of bacteria, fungi and other microorganisms by destroying the cell walls of bacteria, interfering with metabolic processes or inhibiting DNA replication. For example: Nano-silver: It releases silver ions to penetrate the cell membrane and combine with sulfur groups in proteins, leading to the death of bacteria. Nano zinc oxide: It generates hydrogen peroxide through photocatalysis, oxidizes the structure of bacterial cells, and simultaneously releases zinc ions to interfere with enzyme activity. Quaternary ammonium salts: Adsorbed on the surface of bacteria, they damage the integrity of cell membranes and cause leakage of contents. Prevent cross-infection In the medical field, the surfaces of 3D-printed implants, surgical instruments or prosthetic limbs are prone to becoming breeding grounds for bacteria. Adding antibacterial agents can form a sustained antibacterial barrier and reduce the risk of postoperative infection. For example: Orthopedic implants: The surface of 3D-printed titanium alloy bone screws is loaded with an antibacterial coating, which can inhibit the adhesion of drug-resistant bacteria such as Staphylococcus aureus. Respiratory tract stents: Stents printed with antibacterial PLA material can reduce complications of pulmonary infection. Extend the service life of the product

I. The Core Role of antibacterial and antifungal agents in shoe material fiberboard Shoe material fiberboard (such as midsoles, linings, insoles, etc.) contains organic matter (proteins, animal fats) and is in a humid environment, which is very likely to breed mold and bacteria, causing the products to become moldy, have an unpleasant smell, and even rot. Antibacterial and antifungal agents achieve the following functions by disrupting the cellular structure or metabolic processes of microorganisms:

I. Mechanism of Action: Multi-dimensional inhibition of microbial growth Cell membrane destruction: Metal ions (such as silver and zinc) and some organic molecules penetrate the cell membrane of microorganisms, causing cytoplasmic leakage and leading to cell death. Metabolic inhibition: Organic compounds (such as quaternary ammonium salts and pyridines) disrupt the energy production systems of microorganisms by inhibiting enzyme activity, thereby blocking their growth and reproduction.

Medical and health care field: transparent PC/PS infusion set shells, syringe push rods, medical transparent catheters, oral care appliances (such as transparent dental kit cases) (reducing the risk of cross-infection of bacteria in the medical environment, and must comply with medical-grade regulations);

Antibacterial agents for water-based color steel paint can achieve antibacterial effects by destroying the cell structure or metabolic process of microorganisms. Common types include organic, inorganic and compound antibacterial agents.

Antibacterial agent components (such as silver ions, zinc ions) come into contact with the cell membranes of microorganisms, destroying their structure or enzyme activity and preventing microbial reproduction (commonly found in food-grade and medical-grade silica gel). Sustained-release antibacterial: Some organic antibacterial agents (such as specific quaternary ammonium salts) will slowly release antibacterial components, forming an "antibacterial layer" on the surface of silicone, continuously inhibiting the growth of microorganisms (mostly used in daily industrial silicone products). From the perspective of component classification, the common silicone antibacterial agents mainly fall into the following three categories, catering to the needs of different scenarios: Type characteristics, applicable scenarios

Wristbands and watch straps, as close-fitting items that are in long-term contact with the skin and prone to sweat and environmental moisture, are high-frequency scenarios for the growth of bacteria and mold (for instance, the oils and dander in sweat provide nutrients for microorganisms, and a humid environment accelerates the reproduction of mold, which may lead to skin discomfort, unpleasant odors or mold growth of materials).