Environmental adaptability/aging test

Test Background

During long-term operation, the coolant will undergo aging processes such as temperature changes, oxidation, and foaming. The performance degradation may lead to a decrease in heat transfer and intensified corrosion, which affects the service life of the system.

Test Introduction

The environmental adaptability and aging test evaluates the performance stability of the coolant during long-term use through cold-hot cycle aging, high-temperature aging, 85°C oxidation stability test, and anti-foaming test.

Testing Objectives

Verify the performance change after cold-hot cycle

Evaluate the high-temperature oxidation stability

Detect the anti-foaming performance after long-term use

Prediction of coolant replacement cycle

Test Standards

ASTM D1384 High-temperature aging test

ASTM D1882 Antifoam test

YD/T 3982-2021 Requirements for aging test

GB/T 29743.2-2025 Coolant stability test

Applicable Products/Fields

Suitable for long-term stability evaluation of coolant, research on fluid replacement cycle, and failure analysis.

Test Content

Thermal cycling aging: Temperature cycling from -40°C to 85°C, 500 cycles

High-temperature aging: Constant temperature storage at 85°C for 1000 hours

Oxidation stability test: Accelerated oxidation by introducing air or oxygen

Antifoam test: Determination of defoaming time after aeration and foaming

Performance comparison after aging: Retest of physical and chemical properties

Project Advantages

Capable of simulating a service life of more than 10 years

Full performance comparison before and after aging

Provides fluid replacement cycle recommendations and failure warning

Laboratory Configuration

High and low temperature alternating test chamber

High-temperature aging chamber

Anti-foaming test device

A full set of physical and chemical performance testing equipment (before and after aging)

FAQ
Q: How often should the coolant be replaced?
A: For the pure water system, the conductivity needs to be monitored regularly for replacement. The ethylene glycol solution is generally replaced every 3-5 years, which specifically depends on the operating temperature and maintenance conditions.