Assessment of the durability prediction of formulated polymer based materials by (ultra)accelerated photoageing experiments

For 35 years, CNEP has been investigating the ageing and the durability of formulated polymer-based materials. The applied research studies performed at CNEP are based on the fundamental knowledge of the photo-ageing mechanisms and allow predicting the service life of polymer materials for long term periods. Our approach is based on the fact that most losses of functional properties of polymers under natural weathering conditions are due to chemical changes. To be representative and reliable, a laboratory artificial photoageing experiment should therefore produce the same chemical changes as the ones occurring in natural conditions. Acceleration can then be achieved by increasing both temperature and irradiance, with a suitable balance. In this context, representative (ultra)accelerated photoageing experiments can be defined as experiments where the rates of the chemical reactions occurring in natural conditions are increased. In this webinar, our approach as well as examples of durability predictions will be presented.

For 35 years, CNEP has been investigating the ageing and the durability of formulated polymer-based materials. The applied research studies performed at CNEP are based on the fundamental knowledge of the photo-ageing mechanisms and allow predicting the service life of polymer materials for long term periods. Our approach is based on the fact that most losses of functional properties of polymers under natural weathering conditions are due to chemical changes. To be representative and reliable, a laboratory artificial photoageing experiment should therefore produce the same chemical changes as the ones occurring in natural conditions. Acceleration can then be achieved by increasing both temperature and irradiance, with a suitable balance. In this context, representative (ultra)accelerated photoageing experiments can be defined as experiments where the rates of the chemical reactions occurring in natural conditions are increased. In this webinar, our approach as well as examples of durability predictions will be presented.

Temperature Effects in Artificial and Natural Weathering

The surface temperature of a material exposed to natural sunlight or to artificial Xenon-arc radiation is critical for its degradation behavior. In this webinar we present how surface temperatures can be measured in weathering setups and which test parameters will influence the surface temperature. We will show models and examples how the surface temperature influences the degradation process.

The surface temperature of a material exposed to natural sunlight or to artificial Xenon-arc radiation is critical for its degradation behavior. In this webinar we present how surface temperatures can be measured in weathering setups and which test parameters will influence the surface temperature. We will show models and examples how the surface temperature influences the degradation process.

Atlas Online Fundamentals of Weathering - Factors of Weathering

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

Atlas Online Fundamentals of Weathering - Outdoor Weathering

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

Atlas Online Fundamentals of Weathering - Laboratory Weathering

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

Atlas Online Fundamentals of Weathering - Weathering Testing and Basic Standards

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

Atlas Online Fundamentals of Weathering - Acceleration

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

Atlas Online Fundamentals of Weathering - Factors of Weathering

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

Atlas Online Fundamentals of Weathering - Correlation

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.

Atlas Online Fundamentals of Weathering - Outdoor Weathering

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

Atlas Online Fundamentals of Weathering - Laboratory Weathering

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

Atlas Online Fundamentals of Weathering - Weathering Testing and Basic Standards

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

Atlas Online Fundamentals of Weathering - Acceleration

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

Atlas Online Fundamentals of Weathering - Correlation

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.

Atlas Online Fundamentals of Weathering - Factors of Weathering

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

This seminar addresses the influences of weather, i.e. solar radiation, temperature, and moisture on materials including how they are measured and how their impact can be estimated.

Atlas Online Fundamentals of Weathering - Outdoor Weathering

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

This seminar addresses the fundamentals of natural weathering. This includes static exposures in different reference climate zones as well as various outdoor accelerated test methods.

Atlas Online Fundamentals of Weathering - Laboratory Weathering

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

This seminar addresses different kinds of laboratory weathering instruments, various lamp types and their spectral irradiance distribution. Similarities and differences between different instrument types are discussed.

Atlas Online Fundamentals of Weathering - Weathering Testing and Basic Standards

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

This seminar addresses how environmental stress factors are translated into artificial weathering test cycles. Examples are given on the most common test methods for automotive, textiles, coatings, and other applications. Guidance is given on what should be considered and what should be avoided when developing significant weathering test methods.

Atlas Online Fundamentals of Weathering - Acceleration

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

This seminar addresses the principles on how acceleration can be achieved in weathering testing. Technical solutions are described. What should be considered to get reliable and significant results from accelerated testing? How can reciprocity be validated? This seminar will give some answers.

Atlas Online Fundamentals of Weathering - Correlation

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.

To evaluate and to understand accelerated weathering testing, it is important to know how the results “correlate” to real world weathering. In this seminar mathematical/statistical procedures are described on how to compare and how to validate weathering results from different exposures. Basic principles on how to increase correlation are discussed.