Attention : International Standards for Technical Specification Rubber (TSR) Testing - Collected by Zhanjiang Weida Machinery


ZHANJIANG WEIDA MACHINERY INDUSTRIAL CO., LTD.

A  China-based leader in natural rubber primary processing equipment, specializes in delivering high-efficiency, 24/7-capable production systems for global clients. With 20+ years of expertise, our customers' factories across Hainan (China), Southeast Asia, and West Africa provide customized turnkey solutions tailored to specific throughputs (2-12+ TPH), site layouts, and infrastructure needs. From power supply design to staff training and commissioning, we ensure seamless project delivery meeting strict quality and output targets.


International Standards for Technical Specification Rubber (TSR) Testing

Adherence to ISO standards ensures the global competitiveness of natural rubber products, particularly in high-end applications such as automotive tires and medical supplies. Compliance testing is critical for market access. Below is a detailed explanation of international testing standards (ISO) for Technical Specification Rubber (TSR), covering key quality indicators and methods:

1. Gel Content Determination (Collected by Zhanjiang Weida Machinery)

  • ISO 17278:2013
    • Purpose: Measures gel content (mass fraction of undissolved material) in TSR.
    • Method: Dissolve rubber samples in toluene solvent, filter, dry, and calculate residue percentage.
    • Impact: Directly affects Mooney viscosity, plasticity initial value (P0), and Plasticity Retention Index (PRI).

2. Plasticity Retention Index (PRI)  (Collected by Zhanjiang Weida Machinery)

  • ISO 2930:2017
    • Purpose: Evaluates thermal-oxidative aging resistance of natural rubber.
    • Method: Heat samples at 140°C for 30 minutes; calculate PRI based on changes in plasticity.
    • Significance: PRI ≥60% indicates high-quality rubber, while lower values suggest poor aging resistance.

3. Impurities and Ash Content (Collected by Zhanjiang Weida Machinery)

  • ISO 249:2014
    • Purpose: Determines impurity content in natural rubber.
    • Method: Filter dissolved rubber through a 45 μm sieve, dry, and weigh residues.
  • ISO 247:2020
    • Purpose: Measures ash content (inorganic residues).
    • Method: Incinerate samples at high temperature until constant weight; calculate ash mass fraction.

4. Volatile Matter Content (Collected by Zhanjiang Weida Machinery)

  • ISO 248:2017
    • Purpose: Determines volatile substances (moisture and low-boiling organics).
    • Method: Use hot rolling (heating at 105°C) or oven drying to measure mass loss.

5. Nitrogen Content (Collected by Zhanjiang Weida Machinery)

  • ISO 1656:2017
    • Purpose: Measures nitrogen content (reflecting protein levels).
    • Method: Digest samples using potassium pyrosulfite (KPS), then apply Kjeldahl or spectrophotometric methods.

6. Mooney Viscosity (Collected by Zhanjiang Weida Machinery)

  • ISO 289-1:2015
    • Purpose: Measures Mooney viscosity (indicator of processing fluidity) for uncured rubber.
    • Method: Test using a Mooney viscometer at 100°C; record ML(1+4) value.

7. Rapid Plasticity Test (Collected by Zhanjiang Weida Machinery)

  • ISO 2007:2017
    • Purpose: Determines plasticity initial value (P0) of uncured rubber.
    • Method: Compress samples at 100°C using a rapid plastimeter; calculate plasticity.

8. TSR Grading Guidelines (Collected by Zhanjiang Weida Machinery)

  • ISO 2000:2017
    • Purpose: Defines TSR classification rules and quality requirements.
    • Specifications: Grades include TSR 10, TSR 20, TSR 50, etc., with limits for impurities, ash, PRI, and other parameters.

Key Notes (Collected by Zhanjiang Weida Machinery)

  • Global Harmonization: ISO standards ensure consistency in international trade, enabling TSR to meet diverse industrial demands.
  • Technical Updates: Standards like ISO 2930:2017 incorporate the latest advancements in rubber science.
  • Compliance: Manufacturers must align with ISO specifications to access premium markets (e.g., automotive and healthcare sectors).
If you are interested, pls kindly whatsapp me +86 157 6749 7707.

#rubber    #Zhanjiangweidamachineryrubbermachine  #TSRmachines




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