THE STUDY OF THE PIGMENTS INFLUENCE ON THE COMPLEX OF POLYPROPYLENE PROPERTIES
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
KNITU; KNRTU
2.
KNITU
Type:
Article
Pages:
from 46
to 53
Status:
In work
Language:
Russian
Keywords:
POLYPROPYLENE, BEIGE SUPERCONCENTRATE, PIGMENT, MELT FLOW INDEX, PHYSICAL AND MECHANICAL PROPERTIES
Abstract (English):
The study provides an overview of works devoted to the influence of pigments on the rheological, deformation-strength, dielectric, thermal-physical properties and shrinkage coefficient, as well as the temperature properties of polypropylene. It was found that pigments have a significant effect on the structure and properties of polypropylene, which must be taken into account when using products on its basis. The aim of the study was to assess the effect of the superconcentrate on the complex of properties (mechanical, rheological) of polypropylene. The object of study is Polypropylene grade 1316M (PP 1316M) (propylene homopolymer) with MFI = 8 g/10 min and a flexural modulus of 1250 MPa. The beige superconcentrate for polymers Polycolor Beige 04035 based on polyethylene with 56-60% content of coloring matter, MFI = 28-43 g/10 min, heat resistance = 220-260°C and light fastness = 5-6 was used as an additive. The data we obtained during the experiment showed that the introduction of the beige concentrate into polypropylene led to a fairly sharp increase in the values of its melt flow index. It was concluded that the superconcentrate contains a dye, not a pigment. The experiment also showed that the introduction of the beige concentrate into polypropylene led to a decrease in the tensile strength. A decrease in the physical and mechanical properties of the PP composition upon the introduction and increase in the content of the PE-based masterbatch is natural, due to the differences in both the chemical and spatial structure of the mixed polymers. In this regard, it was concluded that the polyethylene superconcentrate is not quite suitable for polypropylene, despite the fact that the manufacturer states that this masterbatch is universal for all polyolefins. Our experiment showed that the beige superconcentrate for polymers Polycolor Beige 04035 based on polyethylene slightly worsens the quality of polypropylene. For the practical use of polypropylene compositions, it is recommended to add a minimum amount of masterbatch sufficient to impart the required color (based on the values of the dye's hiding power).
The study provides an overview of works devoted to the influence of pigments on the rheological, deformation-strength, dielectric, thermal-physical properties and shrinkage coefficient, as well as the temperature properties of polypropylene. It was found that pigments have a significant effect on the structure and properties of polypropylene, which must be taken into account when using products on its basis. The aim of the study was to assess the effect of the superconcentrate on the complex of properties (mechanical, rheological) of polypropylene. The object of study is Polypropylene grade 1316M (PP 1316M) (propylene homopolymer) with MFI = 8 g/10 min and a flexural modulus of 1250 MPa. The beige superconcentrate for polymers Polycolor Beige 04035 based on polyethylene with 56-60% content of coloring matter, MFI = 28-43 g/10 min, heat resistance = 220-260°C and light fastness = 5-6 was used as an additive. The data we obtained during the experiment showed that the introduction of the beige concentrate into polypropylene led to a fairly sharp increase in the values of its melt flow index. It was concluded that the superconcentrate contains a dye, not a pigment. The experiment also showed that the introduction of the beige concentrate into polypropylene led to a decrease in the tensile strength. A decrease in the physical and mechanical properties of the PP composition upon the introduction and increase in the content of the PE-based masterbatch is natural, due to the differences in both the chemical and spatial structure of the mixed polymers. In this regard, it was concluded that the polyethylene superconcentrate is not quite suitable for polypropylene, despite the fact that the manufacturer states that this masterbatch is universal for all polyolefins. Our experiment showed that the beige superconcentrate for polymers Polycolor Beige 04035 based on polyethylene slightly worsens the quality of polypropylene. For the practical use of polypropylene compositions, it is recommended to add a minimum amount of masterbatch sufficient to impart the required color (based on the values of the dye's hiding power).
Keywords:
POLYPROPYLENE, BEIGE SUPERCONCENTRATE, PIGMENT, MELT FLOW INDEX, PHYSICAL AND MECHANICAL PROPERTIES
POLYPROPYLENE, BEIGE SUPERCONCENTRATE, PIGMENT, MELT FLOW INDEX, PHYSICAL AND MECHANICAL PROPERTIES
