PA6/6T: Polyamide 6/6T

Structural Formula

Evaluation

The large RelaxationWhen a constant strain is applied to a rubber compound, the force necessary to maintain that strain is not constant but decreases with time; this behavior is known as stress relaxation. The process responsible for stress relaxation can be physical or chemical, and under normal conditions, both will occur at the same time. relaxation peak overlapping the Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.glass transition (midpoint: 61°C) in the 1^st heating (blue) indicates that this polymer sample had been tempered in a temperature range of 40°C to 50°C or had been stored in that temperature range for a long period of time. Due to the elimination of water (broad peak from approx. 90°C to 180°C) during the 1^st heating, the Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.glass transition shifted to 101°C (midpoint) in the 2^nd heating (red). In the 2^nd heating (red), the sample melting began after a small ExothermicA sample transition or a reaction is exothermic if heat is generated.exothermal Post Crystallization (Cold Crystallization)The post crystallization of semi-crystalline plastics occurs primarily at elevated temperatures and increased molecular mobility above the glass transition.post-crystallization (peak: 141°C) following the Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.glass transition; the temperature of the main peak was 299°C. The corresponding melting enthalpy amounted to 40 J/g. In the first heating, the total melting enthalpy was 29 J/g and thus a bit lower than in the 2^nd heating, indicating that additional CrystallizationCrystallization is the physical process of hardening during the formation and growth of crystals. During this process, heat of crystallization is released.crystallization had occurred during the intervening cooling segment. Nevertheless, the Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).melting temperature (peak temperature) of 298°C was similar to that in the 2^nd heating.