14 сентября, 2015 
Malyar As mentioned in the processing section, silicone sealants and adhesives generally contain polydimethylsiloxane (PDMS) polymer, cross-linkers, fillers, catalysts, and other additives. These additives may be pigments, plasticizers (often unreactive PDMS polymers), and adhesion additives (such as silane coupling agents). Given below are simple formulations and properties (Table 2) for oxime-cured silicone sealants [8]. In these examples, the use of a nonreactive silicone plasticizer and a nonreinforcing carbonate filler results in substantial modulus reduction. This approach can also be used to modify the physical properties of silicones based on other cure chemistries. Low-modulus sealants are often used in sealant applications requiring high movement capability. High-modulus sealants are used more in structural and adhesive applications.
Percent by weight
Hydroxyl-ended PDMS polymer 80-85
Fumed silica 5-10
Oxime cross-linker 5-7
Sn(IV) catalyst 0.05-0.10
B. Medium-Modulus Oxime Sealant
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Percent by weight
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