INFLUENCE OF PHTHALOCYANINE PIGMENTS ON CROSSLINKING KINETICS AND PHYSICAL AND MECHANICAL PROPERTIES OF A COMPOSITE MATERIAL BASED ON LDPE
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics
(Centr himicheskoy inzhenerii)
graduate student from 01.09.2024 to 31.12.2024
graduate student from 01.09.2024 to 31.12.2024
2.
Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics
employee
Russian Federation
employee
Russian Federation
3.
GAVARY GROUP
from 01.01.2023 to 01.01.2024
Russian Federation
from 01.01.2023 to 01.01.2024
Russian Federation
Type:
Article
Pages:
from 44
to 47
Status:
In work
Language:
Russian
Keywords:
CROSSLINKING KINETICS, PHTHALOCYANINE PIGMENTS, PHYSICAL AND MECHANICAL PROPERTIES OF CROSSLINKED LDPE, BLUE 15:3, GREEN 7, CHEMICAL FOAMING
Abstract (English):
The article presents the results of a study of the effect of phthalocyanine pigments, in particular, α-modification (Blue 15:3) and excessively halogenated chlorine (Green 7) on the crosslinking kinetics and properties of a composite material based on high-pressure polyethylene (HDPE) processed by compression two-stage chemical foaming. The main attention is paid to the analysis of kinetic curves and physico-mechanical parameters: strength and elongation at break. The study was based on a comparison of the kinetics of crosslinking compositions with the addition of a crosslinking agent, a crosslinking agent and a blue pigment (Blue 15:3), a crosslinking agent and a green pigment (Green 7). Experiments show that the addition of phthalocyanine pigments affects the crosslinking kinetics and physico-mechanical properties. Given the uniform nature of the pigments, it is worth paying attention to the different effects of each of them, which is presumably explained by the different molecular composition. Hypothesizing that the metal cation in the pigment molecule acts as an accelerator for the polymer crosslinking process, the different effects of blue and green pigments are explained by the difficult access of the copper cation to the crosslinking agent due to chlorine atoms in the Green 7 molecule. The data obtained open up new prospects in compounding, in optimizing technological modes, and can also serve to create HDPE materials with predictable characteristics for compositions processed by two-stage pressing. The paper investigates the changes in the nature of the kinetic curve of the crosslinking process with the addition or absence of pigments of a specific nature, as well as their effect on the physico-mechanical properties of the resulting material. The results of the study confirmed the effect of pigments on the stitching process and, as a result, on the performance properties of the material. Kinetic curves indicated an acceleration of the stitching process, as well as an increase in the density of the resulting vulcanization mesh.
The article presents the results of a study of the effect of phthalocyanine pigments, in particular, α-modification (Blue 15:3) and excessively halogenated chlorine (Green 7) on the crosslinking kinetics and properties of a composite material based on high-pressure polyethylene (HDPE) processed by compression two-stage chemical foaming. The main attention is paid to the analysis of kinetic curves and physico-mechanical parameters: strength and elongation at break. The study was based on a comparison of the kinetics of crosslinking compositions with the addition of a crosslinking agent, a crosslinking agent and a blue pigment (Blue 15:3), a crosslinking agent and a green pigment (Green 7). Experiments show that the addition of phthalocyanine pigments affects the crosslinking kinetics and physico-mechanical properties. Given the uniform nature of the pigments, it is worth paying attention to the different effects of each of them, which is presumably explained by the different molecular composition. Hypothesizing that the metal cation in the pigment molecule acts as an accelerator for the polymer crosslinking process, the different effects of blue and green pigments are explained by the difficult access of the copper cation to the crosslinking agent due to chlorine atoms in the Green 7 molecule. The data obtained open up new prospects in compounding, in optimizing technological modes, and can also serve to create HDPE materials with predictable characteristics for compositions processed by two-stage pressing. The paper investigates the changes in the nature of the kinetic curve of the crosslinking process with the addition or absence of pigments of a specific nature, as well as their effect on the physico-mechanical properties of the resulting material. The results of the study confirmed the effect of pigments on the stitching process and, as a result, on the performance properties of the material. Kinetic curves indicated an acceleration of the stitching process, as well as an increase in the density of the resulting vulcanization mesh.
Keywords:
CROSSLINKING KINETICS, PHTHALOCYANINE PIGMENTS, PHYSICAL AND MECHANICAL PROPERTIES OF CROSSLINKED LDPE, BLUE 15:3, GREEN 7, CHEMICAL FOAMING
CROSSLINKING KINETICS, PHTHALOCYANINE PIGMENTS, PHYSICAL AND MECHANICAL PROPERTIES OF CROSSLINKED LDPE, BLUE 15:3, GREEN 7, CHEMICAL FOAMING
