THERMOGRAVIMETRIC ANALYSES
menu
person
Log in
shopping_cart 0
Basket
menu
person
Log in
shopping_cart 0
Basket
home navigate_next Services navigate_next Testing navigate_next THERMOGRAVIMETRIC ANALYSES
home navigate_next Services navigate_next Testing navigate_next THERMOGRAVIMETRIC ANALYSES

THERMOGRAVIMETRIC ANALYSES

Understanding Thermogravimetric Analysis (TGA) in Rubber Compound Formulations


Overview of O-Ring TGA Tests

Thermogravimetric Analysis (TGA) is a crucial technique for thoroughly characterizing rubber compound compositions, especially when evaluating the effects of other constituents in addition to the polymer matrix. TGA is the preferred approach when it comes to O-ring testing because of its capacity to determine the composition of compounds at different temperatures.
 

Fundamentals of O-Ring TGA Tests

A small sample of the seal material, usually 10 mg, is heated under controlled conditions for TGA O-ring testing. At the same time that the sample is heated to temperatures that frequently approach 1000°C, the sample's relative weight loss is being measured over the temperature range.
 

Analyzed Ingredient Categories

The components of the chemical may be quantitatively determined across many categories using TGA O-ring tests:
 
  • Vaporizable Ingredients: This group mostly consists of plasticizers, the volatilization patterns of which are explained by the weight reduction that occurs during TGA.
  • Composed mostly of the polymer matrix, the pyrolysable components are decomposable when heated and contribute to the weight loss profile as determined by TGA.
  • Oxidizable Ingredients: One ingredient that stands out in this category is carbon black, which is susceptible to oxidation in hot environments, which might impact the weight loss patterns seen by thermogravimetric analysis.
  • Non-oxidizable Ingredients: Also known as ash residue, this group includes substances that are resistant to oxidation and hence leave behind residue after analysis.calculating the sample's proportionate weight loss throughout the temperature range.

Application in Compliance and Quality Assurance

TGA O-ring tests are an essential aspect of quality control procedures, especially in the early stages of sampling. They also make it easier to verify conformity in later shipments by enabling serial components to be compared to the original baseline TGA graph. This reduces the dangers associated with variations by ensuring consistency and adherence to prescribed formulas.

Part in Failure Analysis and Diagnosis

TGA O-ring tests are helpful in failure studies and go beyond quality assurance to provide important information on the underlying causes of material deterioration or performance problems. Analysts may make important inferences about the temperature behavior and composition of the rubber compound by analyzing TGA graphs, which can help with troubleshooting and provide guidance for remedial actions.

In summary

To sum up, TGA O-ring tests are an advanced analytical method that is essential to understanding the complex makeup and thermal behavior of rubber compound compositions. Through the identification of the profile of weight loss at different temperatures, these tests provide the quantitative assessment of different constituents, which in turn supports efforts related to quality assurance, compliance verification, and failure analysis in the field of rubber engineering and production.can make important inferences about the rubber compound's composition and thermal behavior, which can help with troubleshooting and guide the implementation of remedial actions.

Contact us