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Encyclopedia of Coupling Agents
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2020-10
28
Application fields of coupling agents
Application areas of coupling agents:Fiberglass and fiberglass:Improve the wet physical and mechanical strength, wet electrical performance of composite materials, and enhance the bundling, protection, and processing technology of glass fibers.Adhesives and Coatings:Improve adhesion and weather resi
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2020-10
28
Analysis of the difference between coupling agents and surfactants
In the process of coating manufacturing, it is necessary to disperse hydrophilic polar substances such as pigments and fillers into hydrophobic non-polar organic binders. In order to increase the affinity between inorganic substances and organic polymers, coupling agents or other surfactants are gen
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2020-10
28
What should be paid attention to when using coupling agents
The theoretical dosage of coupling agent is to allow all hydrophilic reactive groups in the coupling agent to react with the hydroxyl or proton groups provided by the pigment and filler, and there is no need to be excessive. However, the actual dosage should be determined based on the particle size
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2020-10
28
The function and effectiveness of coupling agents
In practice, it has been found that the performance of fiberglass is largely determined by the bonding condition between the reinforcing material and the synthetic resin interface. Therefore, the interaction between coupling agents and fiberglass and resin has attracted widespread attention.When gla
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2020-10
28
Usage method of coupling agent
Titanium ester coupling agents can undergo chemical reactions on the surface of pigments and fillers, forming a single molecular layer to play a bridging role for each molecule, so the dosage is small and the effect is large. In order to evenly distribute a small amount of titanium ester coupling ag
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2020-10
28
The coupling mechanism of coupling agents
Regarding the mechanism of action of titanium ester coupling agents, it is generally believed that only one isopropoxide group in the monoalkoxytitanium ester coupling agent is a hydrolytic group that can couple with inorganic substances, thus forming a monolayer on the surface of inorganic pigments
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2020-10
28
Effect of mass fraction of silane coupling agent on properties of lotion and film
Self emulsifying PU introduces hydrophilic groups into the PU molecular chain. Silane coupling agents disperse PU molecules in water to form a stable dispersion through the hydrophilicity of the hydrophilic groups. Polyamine groups react with residual isocyanates to expand the chain. The silicon oxy
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2020-10
28
Principles for selecting silane coupling agents
Among the two types of functional groups with different properties in silane coupling agents, the Y group is the most important, which directly determines the application effect of silane coupling agents. Only when the Y group can react with the corresponding matrix resin can the adhesive strength o
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