1、The effect of a novel BYK dispersant for MWCNT on flexural properties
The effects of optimized nanophase resins by BYK dispersants on the flexural strength properties of epoxy resin and novel carbon fiber composites have been investigated and compared with carbon fiber modified by MWCNT without BYK.
2、Polyurethane prepolymers: an efficient dispersant core for sublimation
The prepared modified pre-polymers were terminated using amino-polyether (Jef-famine M-2070) or using maleic acid-modified polyethylene glycol ‘‘PEG 1000’’ to obtain dispersing agents for water-based disperse dye inkjet inks.
3、Study of structure performance relationships of polymeric dispersants
A series of polymeric dispersants in three different structural types, namely AB diblock, ABA triblock and comb, were synthesised via reversible addition–fragmentation chain transfer (RAFT) polymerisation.
4、Softeners doped with asphaltene dispersants acting in
The present study is aimed for probing the molecular mechanisms underlying this observation, with additional interest focused on the synergistic effect of the dispersants with resins and also on the impacts due to their self-association.
5、How do dispersants increase the compatibility between fillers and
Dispersants play a crucial role in improving the compatibility between fillers and resins in coatings by modifying the surface properties of the fillers and enhancing their distribution within...
Vivid application of polyurethane as dispersants for solvent based
The raw materials and prepared dispersants were characterized by FTIR, GPC, Non-volatile content. The properties and dispersing ability of the dispersants were also investigated by measuring ink viscosity, Rheology, surface tension and particle size.
DISPERSANTS TECHNOLOGY AND BENEFITS
plastics and composites industries. The information provided in this document explains the theory behind how dispersants work, the efects produced and how these translate in.
IMPR
As disper-sants are often polar polymers with a low glass transition temperature, the interface between the pigment and continuous phase forms a weak point, especially in coatings designed for high durability. This article addresses the development of an improved dispersant technology.
Aqueous dispersing mechanism study of nonionic polymeric dispersant for
Because of the π-π conjugation effect between dispersants and pigment particles, benzene ring can be adsorbed on the pigment surface and act as an anchoring group.
Enhancing 3D printed ceramic components: The function of dispersants
This review delves into the array of dispersants and coupling agents utilized in the additive manufacturing of ceramic components. It elucidates the interaction mechanisms between these additives and ceramic fillers and examines how these interactions affect the additive manufacturing process.
In the realm of modern materials science, the interaction between dispersants and modified resins forms a complex chemical network. This process involves not only physical mixing but also the formation of chemical bonds, constituting an indispensable step toward achieving high-performance composite materials. This article delves into the reaction mechanisms between dispersants and modified resins and their impact on composite properties.
The role of dispersants is to improve the dispersion of solid particles in liquids, reducing or eliminating agglomeration phenomena. These particles, often nanometer-scale, severely limit the applicability of traditional materials, particularly in scenarios requiring high dispersibility. Modified resins, meanwhile, are resin matrices altered through chemical or physical means to meet specific application demands.
The reaction between dispersants and modified resins typically occurs on two levels: macroscopically, through physical mixing to uniformly distribute particles within the matrix; and microscopically, via chemical bond formation, creating stable connections between particles and the matrix. These interactions may take the form of physical adsorption, hydrogen bonding, ionic bonds, or covalent bonds.
During the reaction, modified resins first interact with dispersants through chemical grafting. Grafting refers to the process where specific functional groups on resin molecules react with corresponding groups on dispersant molecules, forming new chemical bonds. This reaction often involves energy changes but establishes a foundation for subsequent composite formation.
As temperature increases or catalysts are introduced, the chemical reaction between modified resins and dispersants accelerates, generating additional bonds. These bonds enhance particle-matrix adhesion and may introduce novel functional groups, endowing the composite with new properties.
The selection of modified resins is critical. Different resins possess varying functional groups and chemical structures, directly influencing the composite’s performance. For example, incorporating polar groups can improve electrical insulation, while nonpolar groups may enhance mechanical strength.
Additionally, the type and concentration of dispersants affect outcomes. Dispersants with distinct surface activities promote or inhibit particle dispersion under different conditions, and their concentrations influence reaction rates and product morphology.
Environmental factors, such as pH and temperature, also significantly impact the reaction. In some cases, optimizing these conditions can control the reaction pathway, yielding desired structures or properties.
the chemical reaction between dispersants and modified resins is a multi-step, multi-parameter process. Precision in controlling these factors enables the fabrication of composites with exceptional properties, meeting stringent industrial demands. Future advancements in materials science will likely deepen research in this domain, providing a robust foundation for technological progress.
