Construction — Process Challenge

Promotores de Adesão para Selantes em Substratos Difíceis

Selantes não aderem a vidro, metais e substratos de engenharia; primers e promotores de adesão silânicos criam uma camada de ligação covalente para uniões duráveis e resistentes à água
Updated Jun 2026
Abordagem de solução

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (4)
3-aminopropyltrimethoxysilane
CAS 13822-56-5
Silanos e Organossilanos
Methoxy analog — faster hydrolysis
Fast-hydrolyzing aminosilane primer condenses onto glass/metal hydroxyls and reacts into the sealant polymer for a covalent tie-layer
Physical Description: Clear to straw-colored liquid with an ammoniaca…
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Mercaptopropiltrimetoxissilano
CAS 4420-74-0
Silanos e Organossilanos
Mercapto silane for sulfur-cure rubber systems
Thiol group bonds strongly to metals (Cu, Au, Ag) and sulfur-cure systems where amino/epoxy silanes underperform
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3-glycidoxypropyltriethoxysilane
CAS 2602-34-8
Silanos e Organossilanos
Ethoxy analog — slower hydrolysis, better storage
Epoxy silane primer for substrates bonded with epoxy/PU/hybrid sealants; ethoxy form gives better primer storage stability
Physical Description: Líquido
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3-(2-Aminoethylamino)propyltrimethoxysilane
CAS 1760-24-3
Silanos e Organossilanos
Diamine silane for enhanced adhesion
Genuine fit. Classic diamino TRIfunctional adhesion promoter (AEAPTMS; e.g. Dynasylan DAMO / Silquest A-1120 / Dow Z-6020). Trimethoxy = three hydrolyzable groups for maximum siloxane anchoring to glass/metal/mineral, while the two amine groups covalently tie into epoxy, PU, acrylic and phenolic sealant polymers. It is a bona fide workhorse for sealant adhesion to difficult substrates, and the tri
Physical Description: Light yellow liquid   Vapor Pressure: 0.03
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