口工漫画全彩无遮漫画

Cold Testing

ASTM D1329, ASTM D746, and ASTM D2137

What is Cold Testing?

In a general sense, cold testing is utilized to examine a material’s properties and performance at low temperatures. 

ACE Products & Consulting’s rubber testing laboratory offers both low temperature conditioning followed by testing and established the most common low temperature test standards ASTM D1329, ASTM D746, and ASTM D2137. They are three cold testing methods that each deliver slightly different results. Used together, you can analyze a wide array of results to form a well-rounded view of your product’s performance in cold conditions. 

For more information about any of these tests and how they can enhance the quality of your research and development process, contact us today!

Temperature Retraction Testing

ASTM D1329

口工漫画全彩无遮漫画Temperature retraction testing with ASTM D1329 gives you valuable information about crystallization and the viscoelasticity of your product at low temperatures. The method quickly evaluates these properties through a temperature retraction procedure.

What happens during a temperature retraction test? During this test method, a sample is elongated, then locked into the elongated position for testing. Then, the sample is frozen to a state of reduced elasticity. Then, the frozen sample is released and allowed to retract on its own, as the temperature rises steadily. Then, ACE measures the length of the sample at regular intervals as it retracts and thaws.

口工漫画全彩无遮漫画Finally, we calculate the percentage retraction from the obtained data. Two of the most important calculated measures in this test method are TR10 and TR70, which help with the determination of the temperatures which correspond to ten percent and seventy percent retraction.

 

 

This information can uncover valuable information about your sample, such as:

  • The tendency of a sample to crystallize
  • Low-temperature compression set
  • Comparison of brittle points of similar polymers
  • Low-temperature flexibility of crystallizable and non-crystallizable rubbers

ACE will provide expert recommendations based on years of expertise related to your product’s properties, informed by the data collected by temperature retraction testing.

The information you learn from ASTM D1329 is especially useful when analyzed alongside other cold test methods, like ASTM D746 and ASTM D2137–also available at ACE.

Brittleness Point Testing

ASTM D746 and ASTM D2137

Brittleness point testing examines the flexibility of materials at low temperatures through a prespecified and specific impact. These methods determine the lowest temperature at which your rubber vulcanizate or rubber-coated fabric will not fracture or crack when the samples are exposed to particular impact conditions.

口工漫画全彩无遮漫画Here’s how it works: ACE’s expert rubber testing laboratory technicians subject your rubber sample to a single impact. This same impact occurs under specific cold-temperature conditions, which is raised until no failures occur. This point is considered the brittleness temperature for your material.

Several test methods can be achieved with these standards, including:

  1. What is the lowest temperature at which rubber vulcanizates will not fracture or crack?
  2. What is the lowest temperature at which rubber-coated fabrics will not fracture or crack?
  3. At what temperature do fifty percent of samples fail? (50% brittleness temperature)
  4. Brittleness testing of materials from a supplier for classification and specification purposes.

 

 

口工漫画全彩无遮漫画The method for brittleness testing helps you understand and predict how your material may behave and how well it may perform in certain conditions and at certain temperatures.

However, these test methods do not necessarily determine the lowest point at which a product may be used. Instead, they are popular for research and development purposes. They are also useful for compliance testing: ACE can perform a simple pass/fail brittleness test at a specified temperature.

Rubber R&D at ACE – Contact Us!

You can work with a polymer testing expert from ACE to determine a customized, strategic course of testing to optimize your product and gain valuable information for research and development.

Get started today if you’re ready to learn more about the cold-condition properties and performance of your rubber product and materials.

ACE is an ISO/IEC 17025 Accredited Independent Laboratory

ANAB is an internationally recognized accrediting organization that assures technical expertise and global acceptance of ISO/IEC 17025 accredited laboratories’ test reports for the purposes of free trade and regulatory acceptance.

There's More!

ACE offers a full range of rubber and synthetic compound testing. If you are interested in a test method that is not shown, please contact us and we will do our best to accommodate your testing needs.

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