Ozone Environment Test

The GRGTEST ozone testing machine project can precisely control ozone concentration (e.g., 0~500pphm, 1pphm=10⁻⁹ volume ratio), temperature (typically 23±2℃ or 40℃), and relative humidity (typically ≤65% RH); It is equipped with specimen clamps (for fixing specimens under tensile conditions) and an air circulation system (to ensure uniform ozone distribution).

1. Rubber Products
Application Scenarios: Tires, seals (e.g., automotive door and window seals), rubber hoses, conveyor belts, etc.;
Test Focus: Evaluating the ozone resistance of rubber formulations (e.g., natural rubber, nitrile rubber, ethylene propylene diene monomer (EPDM)). Common problems include surface mesh-like cracking, leading to seal failure or reduced structural strength.

2. Plastics and Polymers

Application Scenarios: Outdoor plastic parts (e.g., sunshades, cable sheaths), building waterproofing materials (e.g., waterproof membranes);

Testing Focus: Detecting the effectiveness of antioxidant additives in plastics (e.g., anti-ozone agents, UV absorbers). Common failures include surface chalking, discoloration, and decreased mechanical properties.

3. Electrical Equipment

Application Scenarios: High-voltage cables, motor insulation materials, switchgear seals (due to ozone generation during discharge);

Testing Focus: Verifying the stability of insulation materials in an ozone environment to prevent leakage or short circuits caused by material aging.

4. Aerospace and Military

Application Scenarios: Aircraft rubber components (e.g., fuel tank seals), missile sealing rings;

Testing Focus: Long-term reliability under extreme environments, requiring high-concentration ozone (e.g., above 200 pphm) and long-cycle testing (e.g., 500 hours).

1. International Standards

ISO 1431: Rubber – Test method for resistance to ozone aging, specifying test methods under static or dynamic tensile conditions;

ASTM D1149: Determination of cracking properties of rubber in ozone environment, divided into static and dynamic tests;

ASTM D3395: Test method for resistance to ozone aging of plastics.

2. National Standards

GB/T 7762: Vulcanized rubber or thermoplastic rubber – Ozone cracking resistance – Static tensile test;

GB/T 2951.21: General test methods for insulation and sheathing materials of cables and optical fibers – Ozone resistance test;

GB/T 3512: Vulcanized rubber or thermoplastic rubber – Hot air aging and heat resistance test (partially involving ozone aging).

Testing Item: Ozone Test
Relevant Qualifications: CNAS
Service Background: The ozone test is a crucial test for evaluating the aging resistance of materials or products in an ozone environment. Its core purpose is to accelerate the exposure of material defects by artificially simulating a high-concentration ozone environment, providing a scientific basis for product design, material selection, and quality control.

GRGTEST is a nationally recognized professional third-party testing organization, providing one-stop services.

GRGTEST's Environmental and Reliability Center has established 20 laboratories nationwide, possessing a professional multidisciplinary expert team and advanced testing equipment.

GRGTEST's Environmental and Reliability Laboratories hold CMA and CNAS accreditations, implement a nationwide integrated management model, and actively participate in various proficiency testing projects to ensure that test results are impartial, accurate, and traceable.

GRGTEST serves various military branches and has extensive experience in environmental, reliability, and environmental stress screening testing, meeting diverse customer needs.

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