1、Phenolic epoxy resin
Phenolic epoxy resin (CAS 61788-97-4) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices, suppliers, SDS and more, available at Chemicalbook.
2、Molecular Weight of Phenolic Epoxy
The molecular weight of phenolic epoxy-modified resins refers to the average relative molecular mass of the constituent molecules. This parameter directly impacts viscosity, flowability, crosslinking density, and the mechanical properties of the final product.
3、Phenolic epoxy resin 61788
Phenolic epoxy resin (C21H23ClFNO2) is a halogenated organic compound and a modified epoxy resin. At room temperature, it typically exists as a viscous liquid or semi-solid, ranging in color from pale yellow to amber, with little to no discernible odor under standard conditions.
Research progress on modification of phenolic resin
In recent years, more and more researchers have focused on the discussion of the properties of modified phenolic resins and gradually ignored the research on the synthesis processes that can affect the molecular structure and properties of phenolic resins.
Mechanical Performances of Phenolic Modified Epoxy Resins at
In addition, the thermogravimetric analyses were also conducted from 30 °C to 800 °C on phenolic modified epoxy resins and the results showed that the phenolic modified epoxy resin had an earlier loss in weight than unmodified epoxy resin.
phenolic epoxy resin
After completion of the polycondensation reaction, the low-molecular-weight novolac resin is obtained by washing with warm water until neutral and separating out water.
61788
Phenolic epoxy resin (C21H23ClFNO2) | CAS No: 61788-97-4 | MW: 375.9 g/mol 丨 polymer compound At room temperature, phenolic epoxy resin appears as a viscous liquid to solid substance, depending on its degree of polymerization, and is typically pale yellow to amber in color with little to no discernible odor.
Phenolic epoxy resin
Phenolic epoxy resin is a kind of phenolic resins modified at the phenolic hydroxyl group to include an epoxide functional group (usually a –CH2- (C2H3O) group, where - (C2H3O) is the three-membered epoxide ring).
Ashland Hetron 980 phenolic epoxy vinyl ester modified resin (Ashland
Ashland Hetron 980 phenolic epoxy vinyl ester modified resin (Ashland Chemical, USA) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses, prices, suppliers, SDS and more, available at Chemicalbook.
Preparation and Properties of Phenolic Epoxy Modified Silicone Resin
The TGA and DTGA analysis showed that the initial thermal decomposition temperature and the residual weight of PEMSC at 800 °C decreased compared to MPS, but the temperature corresponding to the maximum thermal decomposition rate in the second stage increased.
In modern materials science, epoxy resins are widely utilized across various fields due to their exceptional physical and chemical properties. Phenolic epoxy-modified resins represent a critical class of specialty resins, as they incorporate phenolic compounds—organic macromolecules—to enhance performance characteristics such as thermal resistance, corrosion resistance, and mechanical strength. The molecular weight of these resins plays a decisive role in determining material properties, making its study essential for optimizing resin performance.
The molecular weight of phenolic epoxy-modified resins refers to the average relative molecular mass of the constituent molecules. This parameter directly impacts viscosity, flowability, crosslinking density, and the mechanical properties of the final product. Molecular weight size governs processing performance and ultimately dictates application outcomes.
Selecting an appropriate phenolic epoxy modifier during resin production and application is crucial. Modifiers with lower molecular weights reduce resin viscosity, improving flowability during processing but potentially compromising properties like heat resistance or mechanical strength. Conversely, higher-molecular-weight modifiers enhance thermal and mechanical performance but increase viscosity, hindering processing efficiency.
Molecular weight also influences the curing behavior of phenolic epoxy resins. Longer molecular chains associated with higher molecular weights can lead to increased shrinkage during curing, affecting dimensional accuracy of the final product. Additionally, extended molecular chains may prolong curing times, slowing production cycles.
molecular weight is not the sole determinant of resin performance. Crosslinking density—the quantity and compactness of the three-dimensional network structure formed within the resin—is equally critical. High crosslinking densities improve strength and wear resistance but may increase brittleness. Thus, selecting phenolic modifiers requires evaluating their reactivity and crosslinking capacity alongside molecular weight considerations.
To achieve high-performance phenolic epoxy resins, researchers strive to optimize molecular weight by adjusting polymerization conditions, such as temperature, catalyst type, and concentration. Employing modifiers with varying functional groups further enables precise molecular weight control.
Practical applications demand tailored molecular weights. For example, aerospace sectors may prioritize high crosslinking densities to withstand extreme temperatures and pressures, while electronic encapsulation industries often emphasize flowability and processability. By studying molecular weight, resins customized for diverse needs can be developed.
The molecular weight of phenolic epoxy-modified resins is a multifaceted issue influenced by numerous factors. A deep understanding of these variables, combined with targeted调控methods, can significantly enhance resin performance to meet stringent application requirements. With ongoing advancements in synthetic technologies, phenolic epoxy resins are poised to deliver even greater contributions across industries.
