INDUSTRY COMPONENT

Aqueous Medium

Aqueous medium used in elastomer emulsion production as a continuous phase for polymerization.

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Component Specifications

Definition
An aqueous medium is a water-based continuous phase that contains dissolved surfactants, initiators, and other additives, serving as the reaction environment for emulsion polymerization to produce elastomer latex. It facilitates heat transfer, particle stabilization, and uniform monomer dispersion.
Working Principle
The aqueous medium provides a stable liquid environment where monomers are emulsified into droplets by surfactants. Polymerization occurs within these droplets or at the particle-water interface, with the medium controlling pH, ionic strength, and temperature to ensure consistent particle size and latex stability.
Materials
Deionized water with controlled conductivity (<10 µS/cm), pH adjusted (typically 6-8), and dissolved oxygen removed. May contain buffer salts (e.g., sodium bicarbonate) and chelating agents (e.g., EDTA).
Technical Parameters
  • pH 6.0-8.0
  • Conductivity <10 µS/cm
  • Dissolved Oxygen <1 ppm
  • Total Dissolved Solids <50 ppm
Standards
ISO 3696, ASTM D1193

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Aqueous Medium.

aqueous medium elastomer emulsion emulsion polymerization water phase latex production Aqueous Medium in Rubber and Plastic Product Manufacturing

Parent Products

This component is used in the following industrial products

Elastomer Emulsion

A stable colloidal dispersion of elastomeric polymer particles in an aqueous medium.

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Engineering Analysis

Risks & Mitigation
  • Contamination leading to off-spec latex
  • pH instability causing coagulation
  • High conductivity affecting particle stability
FMEA Triads
Trigger: High conductivity from dissolved ions
Failure: Reduced latex stability and increased coagulum
Mitigation: Use deionized water and monitor conductivity inline
Trigger: pH drift during storage
Failure: Inconsistent polymerization kinetics
Mitigation: Buffer with sodium bicarbonate and control CO2 ingress

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
pH ±0.2, Conductivity ±2 µS/cm
Test Method
ISO 10523 for pH, ISO 7888 for conductivity

Buyer Feedback

★★★★☆ 4.8 / 5.0 (24 reviews)

"The Aqueous Medium we sourced perfectly fits our Rubber and Plastic Product Manufacturing production line requirements."

"Found 54+ suppliers for Aqueous Medium on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Aqueous Medium is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the role of aqueous medium in elastomer emulsion?

It serves as the continuous phase for emulsion polymerization, dispersing monomers, stabilizing particles, and facilitating heat and mass transfer.

What are the key quality parameters for aqueous medium?

Key parameters include pH (6-8), low conductivity (<10 µS/cm), low dissolved oxygen, and minimal total dissolved solids.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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