Concrete Replacement Composite — Wood Shavings and/or Hemp Superglue Composite
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Physical curing adhesives.
Chemical curing adhesives reach their cured or crosslink by a series of chemical reactions (polyaddition, polycondensation or polymerization) that occur internally between the monomers, such adhesives are composed by the following compounds:
Monomers: These are the basic units that form the polymers, once the monomers bonds with others monomers in order to produce the polymer, that polymer can adopt the structures and properties of thermoplastics, elastomers and thermosets materials. The resin, catalyst and reactive diluents are also considered as monomers.
Prepolymers: Are polymer chains with small length and weight, primarily used for adhesives such as polyurethane and unsaturated polyester adhesives.
Fillers: Are chemicals compounds which vary primarily the mechanical properties of adhesives, the fillers most used in the adhesives we can find silica, clay, aluminum powder…
Pigments: These are the chemical compounds that give the color to the adhesive, thanks to the pigments we can use the same adhesive and with the same properties with different colors such as a gray or black.
Additives: These are chemical compounds that vary the chemical properties of the adhesives, accelerators, corrosion inhibitors, adhesion promoters, fire retardants and fungicides are considered as additives in adhesives.
Physical curing adhesives are those adhesives that contain the polymer already formed, but they need an energy (heat, pressure, etc.) to produce the adhesion and curing process, such adhesives are composed by the following compounds:
Polymer: This is the main polymer that form and produce the adhesive, once it crosslink the polymer can adopt structures and properties of thermoplastics and elastomer materials, these adhesives do not contain polymers with thermosets material structures.
Fillers: Are chemicals compounds which vary primarily the mechanical properties of adhesives, the fillers most used in the adhesives we can find silica, clay, aluminum powder…
Pigments: These are the chemical compounds that give the color to the adhesive, thanks to the pigments we can use the same adhesive and with the same properties with different colors such as a gray or black.
Additives: These are chemical compounds that vary the chemical properties of the adhesives, fire retardants, emulsifiers, rheology promoters, solvents, dispersants, and plasticizers are considered as an additive in adhesives.
About all the compounds listed above, we do special mention about the fillers, due that the correct selection of the fillers we will directly influence the physical, chemical and mechanical properties of the adhesive, glue or sealant.