PROGRESS IN EPOXY REZIN PRODUCTION
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazanskiy nacional'nyy issledovatel'skiy tehnologicheskiy universitet
Russian Federation
Russian Federation
2.
Gimnaziya № 75 g. Kazani
3.
KNITU
Type:
Article
Pages:
from 78
to 81
Status:
Published
Received:
10.01.2026
Accepted:
10.01.2026
Published:
26.02.2026
Language:
Russian
Keywords:
EPOXY RESIN, EPOXY NUMBER, DYNAMIC VISCOSITY, CONTENT OF VOLATILE AND SAPONIFIABLE CHLORINE, SOL-GEL ANALYSIS, STRENGTH, VITALITY
Abstract:
Epoxy materials are indispensable in the electronics industry, construction, aircraft and automotive manufacturing, rocket, space, and special equipment, as well as in everyday life. More than 95% of the epoxy resin market in our country is currently supplied by imports, primarily from China. Therefore, the «Polyplast» group of companies is implementing a project for a plant with a capacity of up to 55 thousand tons per year for epoxy-diane resins. The launch of the plant is scheduled for the second quarter of 2026, and it is already producing test batches of these oligomers at a pilot plant. The physicochemical properties of diane epoxy resins, the viability of epoxy compositions, and the hardness of cured polymers were evaluated using standard methods. Curing was performed with aminoalkylphenol AF-2 for 7 days at room temperature. Sol-gel analysis was performed using boiling acetone extraction in a Soxhlet apparatus for 6 h. Flexural strength was assessed using a Shimadzu AG-50 kNX instrument. We compared the properties of resins from a well-known Chinese manufacturer, the traditional USSR ED-20, and those obtained at the «Polyplast-Uralsib» pilot plant, as well as the operational and technological characteristics of cured polymers based on them. The domestic oligomer has approximately the same concentration of epoxy groups as the Chinese resin, but the saponifiable chlorine content and dynamic viscosity are lower. The performance characteristics of polymers based on Chinese and experimental domestic resins are approximately the same, while ED-20 is significantly lower. Moreover, the epoxy number of the original oligomers, which determines the degree of cross-linking of the cured materials, has a greater influence on these indicators. The compositions based on ED-20 resin have the highest viability due to its lower epoxy number and higher viscosity.
Epoxy materials are indispensable in the electronics industry, construction, aircraft and automotive manufacturing, rocket, space, and special equipment, as well as in everyday life. More than 95% of the epoxy resin market in our country is currently supplied by imports, primarily from China. Therefore, the «Polyplast» group of companies is implementing a project for a plant with a capacity of up to 55 thousand tons per year for epoxy-diane resins. The launch of the plant is scheduled for the second quarter of 2026, and it is already producing test batches of these oligomers at a pilot plant. The physicochemical properties of diane epoxy resins, the viability of epoxy compositions, and the hardness of cured polymers were evaluated using standard methods. Curing was performed with aminoalkylphenol AF-2 for 7 days at room temperature. Sol-gel analysis was performed using boiling acetone extraction in a Soxhlet apparatus for 6 h. Flexural strength was assessed using a Shimadzu AG-50 kNX instrument. We compared the properties of resins from a well-known Chinese manufacturer, the traditional USSR ED-20, and those obtained at the «Polyplast-Uralsib» pilot plant, as well as the operational and technological characteristics of cured polymers based on them. The domestic oligomer has approximately the same concentration of epoxy groups as the Chinese resin, but the saponifiable chlorine content and dynamic viscosity are lower. The performance characteristics of polymers based on Chinese and experimental domestic resins are approximately the same, while ED-20 is significantly lower. Moreover, the epoxy number of the original oligomers, which determines the degree of cross-linking of the cured materials, has a greater influence on these indicators. The compositions based on ED-20 resin have the highest viability due to its lower epoxy number and higher viscosity.
Keywords:
EPOXY RESIN, EPOXY NUMBER, DYNAMIC VISCOSITY, CONTENT OF VOLATILE AND SAPONIFIABLE CHLORINE, SOL-GEL ANALYSIS, STRENGTH, VITALITY
EPOXY RESIN, EPOXY NUMBER, DYNAMIC VISCOSITY, CONTENT OF VOLATILE AND SAPONIFIABLE CHLORINE, SOL-GEL ANALYSIS, STRENGTH, VITALITY
