T/BYXT 003.1-2022 Rare earth antibacterial basic material Part 1: Zinc-loaded antibacterial powder

Scope

Scope: This standard specifies the terms and definitions, technical requirements, test methods, inspection rules, packaging, marking, transportation, storage, evaluation, and labeling of rare earth-zinc antimicrobial powders. This standard applies to the preparation and processing of rare earth-zinc antimicrobial powders. The preparation of antimicrobial powders with other rare earth carriers can be carried out by reference to this standard. Main technical content: I. Product specifications and physical properties shall comply with the requirements of Table 1. Table 1: Product Specifications and Physical Properties Product Specification Particle Size Tapped Density Water Content Heat Resistance Appearance REA-Zn-2 D50 < 1.5 μm/D90 < 2.0 μm 1.8 g/ml ≤ 0.5% ≤ 1.0% > 1000°C Light yellow powder a The product specification is referenced to the notation method of GB/T 17803. The first layer is represented by the rare earth antimicrobial abbreviation "REA"; the second layer is represented by the main carrier element "Zn"; and the third layer represents the antimicrobial rate, where "2N" indicates an antimicrobial rate of 99% (where "2" represents the number of "9s", and "N" is the first letter of the English word "9"). II. The chemical composition of the product shall comply with the requirements of Table 2. Table 2: Chemical Composition Ce La Pr Nd Sm Eu Zn Cu Ag Ti Zr Mass fraction /% ≥ 50% ≥ 5% < 1% < 1% < 1% ≤ 40% ≤ 5% ≤ 1% ≤ 10% ≤ 10% III. The safety requirements of the product shall comply with the provisions of Table 3. Table 3: Safety Requirements Item Acute Toxicity Test Indicator Non-toxic IV. The antimicrobial requirements of the product shall comply with the provisions of Table 4. Table 4: Antimicrobial Requirements Antimicrobial Rate a Antibacterial Rate b COVID-19 Inhibition Rate c Antifungal Grade d Antimicrobial Grade e Indicator ≥ 99%

Development Information

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