1、Hydrophobic or superhydrophobic modification of cement
This work analyses the mechanisms of hydrophobic modification of material surfaces and discusses three hydrophobic modification methods for cement-based materials: templating, external coating, and internal mixing.
2、Advances in water
Concerning the water-resistance of the resin, this review introduces the effect of inorganic materials like silane coupling agents, fluorine silicone, and copolymers on the hydrophobic...
3、Advances in water
Silane coupling agents can crosslink with resin to form a stable three-dimensional network structure, thereby increasing the crosslinking density, reducing the surface energy of the coating, and achieving the purpose of hydrophobic modification of the resin.
Enhancement of Moisture‐Resistant Performance of Epoxy Resins via
Abstract The introduction of long and flexible polyether chains in epoxy resins is an effective method to improve their toughness. However, using the hydrophilicity/hydrophobicity of polyether chai...
Preparation and study of modified epoxy resin super
To simplify the preparation process of super-hydrophobic coatings and ...
Influence of chain length of organic modifiers in hydrophobization
The mentioned coating material is based on chemical modification of commercial epoxy resin to improve its hydrophobic and ice adhesion properties. The influence of the type of fluorinated modifier and its molecule chain length on modified epoxy resin wettability and ice adhesion has been determined.
Enhancing bond properties between epoxy resins and cementitious
The above analysis demonstrates that surface hydrophobic modification of cementitious materials can significantly enhance their bond properties with epoxy resin, while also providing long-term effectiveness.
Hydrophobic Modification of Graphene Oxide and Its Effect on the
This study modified graphene oxide (GO) with hydrophilic octadecylamine (ODA) via covalent bonding to improve its dispersion in silicone-modified epoxy resin (SMER) coatings.
Catalytic dehydration of sorbitol to isosorbide over sulfonated
Modified and sulfonated phenolic resins were used as catalysts for the dehydration of sorbitol to isosorbide, and the effects of surface hydrophobicity, acid type and acid amount on sorbitol conversion and isosorbide yield were investigated systematically.
Advances in water
Concerning the water-resistance of the resin, this review introduces the effect of inorganic materials like silane coupling agents, fluorine silicone, and copolymers on the hydrophobic properties of aqueous acrylic resins, analyses and discusses the mechanism of action of vari
In the field of materials science, resins are a critical class of polymeric materials widely used in coatings, adhesives, composites, and numerous industrial products. the hydrophilic nature of resins often limits their optimal performance in applications requiring high hydrophobicity, such as waterproof coatings and high-performance composites. Consequently, modifying the hydrophobic properties of resins to enhance their water repellency has become an important research focus in materials science.
Methods for hydrophobic modification of resins are diverse, primarily including physical modification, chemical modification, and composite modification. Physical modification involves altering the molecular structure of resins or introducing specific additives, while chemical modification achieves hydrophobicity through chemical reactions. Composite modification combines both physical and chemical approaches.
Physical modification is a straightforward and effective method, typically realized by adjusting the molecular chain structure of resins or incorporating additives. For example, techniques like copolymerization or cross-linking can densify molecular chains to reduce water penetration. Adding compounds containing hydrophobic groups, such as organosilicon or fluorocarbon substances, can significantly improve hydrophobicity.
Chemical modification involves structural changes through chemical reactions to enhance hydrophobicity. Common methods include graft copolymerization, cross-linking copolymerization, and other reactions that introduce hydrophobic groups (e.g., polydimethylsiloxane, polyvinylidene fluoride) or alter molecular architectures. Cross-linking copolymerization, for instance, creates three-dimensional networks to boost water resistance.
Composite modification integrates physical and chemical approaches, leveraging the advantages of both. By combining modified additives with chemically altered resin structures, materials with both high hydrophobicity and stability can be achieved.
hydrophobic modification of resins remains a complex and challenging research topic. Through physical, chemical, and composite modifications, the hydrophobicity of resins can be improved while expanding their application potential. In the future, advancements in material technologies are expected to yield more efficient and eco-friendly hydrophobic resins, further contributing to technological and societal progress.
