Heat resistance

AZP™ optical resin from Asahi Kasei exhibits excellent heat resistance. Its dimensions, haze, yellowness index (YI), and spectral transmittance show minimal change after heat resistance testing.

Heat resistance

Stable quality even in high-temperature environments

AZP™ optical resin from Asahi Kasei with excellent heat resistance. Even under high temperatures, it maintains product shape, retains transparency, and resists yellowing. It also exhibits minimal change in spectral transmittance, allowing high color fidelity to be maintained.

Maintaining product shape

AZP™ shows smaller dimensional change than polymethyl methacrylate (PMMA) in a high-temperature test at 110°C for 2,000 hours.
This indicates that AZP™ can provide long-lasting shape stability in components exposed to high-temperature environments.

AZP™ has better dimensional stability than polymethyl methacrylate (PMMA) in both transverse direction (TD) and machine direction (MD) in 2,000-hour heat-resistance test at 110°C.
The graphs show typical test results, not guaranteed values.

Dimensional change of AZP™ and PMMA in the transverse direction (TD) and machine direction (MD) after high-temperature test

Retaining transparency

AZP™ shows smaller change in haze than cyclic olefin polymer (COP) in a 2,000-hour high-temperature test at 110°C. The results for AZP™ were comparable to polymethyl methacrylate (PMMA), which is generally considered to have high heat resistance.
This indicates that AZP™ can provide long-lasting transparency in headlamps and other components that have prolonged exposure to high temperatures.

Haze change of AZP™ and is better than cyclic olefin polymer (COP) and comparable to polymethyl methacrylate (PMMA) in 2,000-hour heat-resistance test at 100°C.
The graph shows typical test results, not guaranteed values.

Haze change of AZP™, COP, and PMMA after high temperature testing

Minimal yellowing

AZP™ shows smaller change in yellowness index (YI) than cyclic olefin polymer (COP) in a 2,000-hour high-temperature test at 110°C. The results for AZP™ were comparable to polymethyl methacrylate (PMMA), which is generally considered to have high heat resistance.
This indicates that AZP™ can maintain good product appearance without yellowing when exposed to high temperatures.

Yellowness index (YI) change of AZP™ is better than cyclic olefin polymer (COP) and similar to polymethyl methacrylate (PMMA) in 2,000-hour heat-resistance test at 110°C.Yellowness index (YI) change of AZP™ is better than cyclic olefin polymer (COP) and similar to polymethyl methacrylate (PMMA) in 2,000-hour heat-resistance test at 110°C.
The graph shows typical test results, not guaranteed values.　

Change in yellowness index (YI) of AZP™, COP, and PMMA after high temperature testing

Maintaining reproducibility of all colors

AZP™ ️shows slight change in spectral transmittance in a 2,000-hour high-temperature test at 110°C. The results were similar to polymethyl methacrylate (PMMA), which is generally considered to have high heat resistance.
This means that AZP™ can provide long-term color fidelity in applications such as automotive instrument panels that are subject to prolonged exposure to high temperatures.

Change in spectral transmittance of AZP™ is slight, shown at left, similar to polymethyl methacrylate (PMMA), shown at right, in 2,000-hour high-temperature test at 110°C.
The graphs show typical test results, not guaranteed values.　

Change in spectral transmittance change of AZP™ and polymethyl methacrylate (PMMA) after high-temperature testing

More technical information

Low birefringence

AZP™ has low birefringence comparable to glass. It maintains extremely low birefringence even under stress or when shaped into lenses, allowing for clearer image formation.

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Light resistance

AZP™ optical resin from Asahi Kasei exhibits excellent light resistance. Its Haze, YI, and spectral transmittance show minimal change after light resistance testing.

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Reasons to Choose AZP™

AZP™ from Asahi Kasei is a completely new optical resin with almost no birefringence. It enables a vivid and clear visual experience, along with light weight, small size, and high flexibility in design that cannot be obtained with conventional resins or glass.

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Reasons to Choose AZP™