Both room temperature cure and heat-curing are available. Application on heated surfaces is primarily a question of application properties.

We would need to consider the specific film thickness, however corrosion resistance is not ideal if the film of coatings is too thin. For better performance, we don’t recommend to formulate ultra-thin coatings with polysiloxane resins.

Quark’s amino polysiloxane is a polymer, while aminosilane is a silane coupling agent, a monomer.  They are not the same type of substance. Yes, there are significant differences. Amino polysiloxane is a polymeric compound, typically used as a curing agent or resin modifier in coatings, enhancing properties like weatherability and mechanical strength. Aminosilane belongs to small molecule silane coupling agents, mainly used as adhesion promoters or surface modifiers. Although both contain amino groups, they differ significantly in molecular structure, application scope, and functional mechanism.

We do not have waterborne polysiloxanes. Quark only produces solvent-based polysiloxane resins and almost 100% solid systems.

It happens that the core binder of many so-called "inorganic polysiloxane" coatings on the market is essentially a silicate system (such as water glass, i.e., alkali metal sodium/potassium silicate). However, these products are modified by the addition of silicone resins (e.g., polysiloxanes) and marketed under a new name. As for the question, we consider the answer may not be entirely accurate.

The polysiloxane of Quark is significantly different with these products. The backbone is siloxane, while the side chain is modified with organic components like epoxy or acrylic. This is a chemical bonding, offering excellent performance and good stability.

It’s supposed that the modification should have indirect yet critical enhancement of salt spray resistance, but we haven’t done the salt spray evaluation for the direct result. However, enhancing the salt-spray resistance is not the exclusive objective.

The combination of these two materials is fundamentally aimed at addressing their respective weaknesses:

Weaknesses of Polysiloxane : low mechanical strength, relatively poor adhesion, high cost

Advantages of epoxy resin: exceptional adhesion, excellent chemical resistance.

• Modifying polysiloxane with epoxy groups aims to create a "organic-inorganic hybrid" system:

• Primary objectives/improved properties:

• Significantly enhanced adhesion and interlayer bonding

• Improved mechanical properties

• Optimized curing performance and application window

• Cost optimization

We have a range of curing agent types. The more amino groups, the faster the cure, but flexibility might be poorer. We generally recommend choosing the most suitable one; faster is not necessarily better.