How Do Pre-Wetted Lint-Free Wipes Work?

1. Core Working Principles

  • Solvent Release Mechanism:

    • Nano-encapsulation: Each microcapsule contains 0.5-2μL solvent, released gradually through fiber friction

    • Diffusion formula: Q=K·ΔP·t (Q=release amount, K=material coefficient, ΔP=pressure difference, t=time)

  • Structural Design:

    • Sandwich architecture: PE barrier layer (anti-evaporation) + dual-gradient fibers (absorption/release balance)

2. Materials Science Perspective

✅ Fiber Properties:

  • Polyester/nylon blend (0.3-0.8μm diameter)

  • Specific surface area >200m²/g (enhanced solvent loading)
    ✅ Solvent Formulations:

  • Electronic grade: 99% IPA + 0.1% corrosion inhibitor

  • Medical grade: 75% ethanol + 0.5% glycerol (humectant)

3. Performance Validation System

Test Item Standard Method Qualification Criteria
Solvent Retention ISO 9073-10 <15% evaporation in 4h
Fiber Shedding IEST-RP-CC004.3 <100 particles/m³ (>0.5μm)
Cleaning Efficacy ASTM E2315 <0.01μg/cm² residue

4. Industry-Specific Mechanisms

  • Semiconductors:

    • Anti-static fibers (surface resistance 10⁶-10⁹Ω) prevent ESD damage

  • Biopharma:

    • Gamma sterilization (25kGy dose) breaks DNA chains

  • Optics:

    • Silicone-free treatment (prevents lens hazing)

5. Technological Frontiers

  • Smart-Response Types:

    • pH-sensitive microcapsules (wound dressing applications)

    • Temperature-triggered release (activates above 35℃)

  • Eco-Friendly Versions:

    • Biodegradable fibers (PLA material)

    • Aqueous solvents replacing organics

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