MF: Melamine-Formaldehyde Resin

General Properties

Short Name:

Name: 

MF

Melamine-Formaldehyde Resin


Melamine-formaldehyde resins (MF) also belong to thermosets (aminoplasts). Since curing occurs by polycondensation, a reaction product, in this case water, is released during the reaction. The endothermal effect due to water evaporation overlaps the EsotermicoUna transizione o reazione è esotermica se il materiale genera calore exothermal effect of the cross-linking reaction. Therefore, measurements of polycondensation reactions are carried out in pressure-tight crucibles (here high-pressure steel crucibles).

Structural Formula


Properties

Glass Transition Temperature70 to 130°C
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-
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 Enthalpy-
Decomposition Temperature340 to 400°C
Young's Modulus6000 to 10000 MPa
Coefficient of Linear Thermal Expansion40 to 60 *10-6/K
Specific Heat Capacity1.2 J/(g*K)
Thermal Conductivity0.35 to 0.40 W/(m*K)
Density1.48 to 1.50 g/cm³
MorphologyThermoset
General propertiesGood chemical resistance. High gloss. High surface hardness. High abrasion resistance. Good electrical insulating properties
ProcessingCompression, injection molding, extrusion molding
ApplicationsFurniture industry (adhesive resin for, e.g., wood bonding, face veneer …). Electrical industry. Impregnation of textiles. Matrix for fiber-reinforced composites. Camping dishes, kitchen tools

NETZSCH Measurement

InstrumentDSC 204 F1 Phoenix®
Sample Mass24.79 mg
Isothermal Phase8 min
Heating/Colling Rates10 K/min
Crucible

High-pressure steel crucible,

closed

AtmosphereN2 (40 ml/min)

Evaluation

The above plot shows a DSC curve from a single heating of a melamine formaldehyde resin (MF). The Temperatura di transizione vetrosaLa transizione vetrosa è una delle più importanti proprietà chimico-fisiche dei materiali amorfi e semi-cristallini, come, ad esempio, vetri, metalli (amorfi), polimeri, ingredienti farmaceutici e alimentari e definisce l’intervallo di temperatura in cui le proprietà meccaniche die materiali variano da duro e fragile a più morbido, malleabile o gommoso.glass transition at approx. 61°C (midpoint) is overlapped by a large endothermal enthalpy 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 (peak temperature 69°C) and is immediately followed by an EsotermicoUna transizione o reazione è esotermica se il materiale genera calore exothermal curing with a peak temperature of approx. 136°C and a reaction enthalpy of 48 J/g. A temperature-modulated DSC (TM-DSC) measurement (not presented here) would be able to separate the reversing Temperatura di transizione vetrosaLa transizione vetrosa è una delle più importanti proprietà chimico-fisiche dei materiali amorfi e semi-cristallini, come, ad esempio, vetri, metalli (amorfi), polimeri, ingredienti farmaceutici e alimentari e definisce l’intervallo di temperatura in cui le proprietà meccaniche die materiali variano da duro e fragile a più morbido, malleabile o gommoso.glass transition from the non-reversing endothermal 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 and the exothermal reaction peaks.