1、Structure
In detail, we have discussed pertinent research studies on the synthesis mechanism of silane-terminated PUs and the influencing state parameters. Besides, we also disclosed the relationship between structure of silane modified polyurethanes and its properties.
2、Full article: One
These were used in the form of milled carbon fibres (MCF) to fill a one-component polyurethane (1C-PUR) commercial adhesive to determine hydrothermal resistance of beech-bonded joints tested in shear.
3、Modification of One
The made researches have shown that modified polyurethane one-component lacquer successfully can be applied to protect constructions and buildings against negative natural and anthropogenic factors.
Research progress on polyurethane
The polyurethane modification mechanism and the effect of curing agent on the properties of polyurethane-modified epoxy resins are discussed. Polyurethane-modified epoxy resins show potential to combine the strengths of both polyurethanes and epoxy resins for advanced pavement repair materials.
Improving Epoxy Resin Performance Using PPG and MDI by One
In this study, a convenient way to toughen epoxy resins was explored, and the monomers PPG and MDI for the synthesis of polyurethane prepolymers were used for a one-step modification of epoxy resins.
Composition based on one
The mechanisms of interaction of one-component polyurethane with tetrapropoxysilane have been studied using spectroscopy.
Modification of One
A series of intercrosslinked networks (ICNs) based on silicone modified polyurethane (PU)–epoxy resins were developed. In this study, epoxy resin (diglycidyl ether of bisphenol-A) was modified with…
Composition based on one
The questions of interaction of one-component polyurethane and organosilicon compound from the group of alkoxysilanes - tetrapropoxysilane are considered. The composition is intended to obtain a hydrophobic coating with improved performance properties to protect building structures from the effects of technogenic and natural factors.
One
The polyol primer transforms the 1C PUR into a two-component polyurethane; it is the easy way out but requires double application; in other words, it is a two-component polyurethane with the polyol attached to one substrate surface.
Advancements and Applications of One
Advancements and Applications of One-Component Polyurethane Adhesive in Timber Engineering: A Mini Review
In the field of modern materials science, one-component polyurethane resins have become a preferred material in numerous industrial applications due to their excellent physical and chemical properties. These materials are widely used in various industrial products, including footwear, furniture, architectural sealants, and automotive components, thanks to their unique advantages such as good wear resistance, elasticity, oil resistance, and adhesive properties. modifying one-component polyurethane resins to further enhance their performance in these applications has become an inevitable topic.
The basic characteristics of one-component polyurethane resins determine their widespread use in many fields. Polyurethane resin is a polymer formed by the reaction of isocyanates with polyols, exhibiting good mechanical strength and flexibility. Its molecular structure contains a large number of carbamate linkages, which enable the formation of a three-dimensional cross-linked network during curing, providing excellent mechanical strength and durability. Additionally, polyurethane resins possess good wear resistance and chemical resistance, making them stand out in industrial applications.
one-component polyurethane resins also have certain limitations. For example, their heat resistance and solvent resistance are relatively poor, which limits their use in high-temperature or highly chemical environments. To overcome these limitations, modifying one-component polyurethane resins is particularly important.
There are various modification methods, among which adding modifiers is the most common. By incorporating specific additives into the polyurethane resin, its properties can be significantly improved. For instance, plasticizers can increase the flexibility of the resin, while fillers can enhance its mechanical strength. In addition, introducing other functional groups can impart new properties to the resin, such as flame retardants improving fire resistance or UV absorbers enhancing weatherability.
Besides adding modifiers, blending is another effective modification method. By blending different types of polymers, composites with diverse properties can be obtained. For example, blending polyurethane with polyetheretherketone (PEEK) can produce novel materials that combine the high mechanical strength of polyurethane with the high-temperature resistance of PEEK.
The application of nanotechnology in modifying one-component polyurethane resins is also a noteworthy field. The addition of nanoparticles can significantly improve the mechanical properties and thermal stability of the resin. For instance, incorporating carbon nanotubes or graphene can lead to higher tensile strength and better thermal stability in polyurethane resins.
Although one-component polyurethane resins already exhibit excellent performance, the use of various modification methods can further broaden their application areas and meet more demanding usage conditions. This not only contributes to the development of new materials but also brings more innovative possibilities to various industries.
In the future, with continuous advancements in materials science, we have reason to believe that one-component polyurethane resins and their modified products will play a greater role in more fields. Through in-depth research and rational application of these materials, we can address market demands that existing materials cannot meet, making greater contributions to the progress and development of human society.
