Why do polymers exhibit significant anelastic behavior? (Select all that apply) Select 2 correct answer(s) Question 26 options: They have a viscoelastic nature They exhibit both elastic and viscous responses to stress They return to their original shape instantly after stress removal They are purely elastic materials
Question
Why do polymers exhibit significant anelastic behavior? (Select all that apply)
Select 2 correct answer(s) Question 26 options:
They have a viscoelastic nature
They exhibit both elastic and viscous responses to stress
They return to their original shape instantly after stress removal
They are purely elastic materials
Solution
Para responder a esta pregunta, es importante entender las propiedades de los polímeros y su comportamiento bajo estrés. Vamos a analizar cada opción:
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Tienen una naturaleza viscoelástica: Los polímeros son conocidos por su comportamiento viscoelástico, lo que significa que exhiben tanto propiedades viscosas como elásticas. Esto contribuye a su comportamiento anelástico.
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Exhiben respuestas tanto elásticas como viscosas al estrés: Esta afirmación es correcta porque los polímeros muestran una combinación de respuestas elásticas (recuperación instantánea) y viscosas (flujo dependiente del tiempo) cuando se les aplica estrés.
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Vuelven a su forma original instantáneamente después de la eliminación del estrés: Esta afirmación no es correcta para los polímeros, ya que debido a su naturaleza viscoelástica, no siempre vuelven a su forma original instantáneamente.
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Son materiales puramente elásticos: Esta afirmación es incorrecta porque los polímeros no son puramente elásticos; tienen componentes viscosos que contribuyen a su comportamiento anelástico.
Por lo tanto, las respuestas correctas son:
- Tienen una naturaleza viscoelástica
- Exhiben respuestas tanto elásticas como viscosas al estrés
Similar Questions
Choose the correct statements.(a) Polymers behave as elastic body at low temperatures and high rates of strain(b) At high temperatures and low rates of strain polymers behave in a viscous manner, flowing like a liquid(c) At low temperatures and high rates of strain polymers behave in a viscous manner, flowing like a liquid(d) Polymers behave as elastic body at high temperatures and low strain rates
What is anelasticity? (Select all that apply) Select 2 correct answer(s) Question 25 options: Time-dependent elastic behavior Continuous deformation after loading and upon load release Instantaneous elastic behavior Purely elastic response without time dependence
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What does the study of anelasticity in materials suggest about activation energy? (Select all that apply) Select 2 correct answer(s) Question 27 options: It indicates a link to material behavior Activation energy is irrelevant in understanding anelasticity There is no significant relationship with material behavior There is a relationship between activation energy and the change in relaxation temperature
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