Dynasylan® MEMO is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker.
Dynasylan® MEMO is a clear, colorless liquid. It is soluble in alcohols, and aliphatic or aromatic hydrocarbons.
Typical Applications
Dynasylan® MEMO is used as adhesion promoter in applications such as:
Dynasylan® MEMO is either applied to the inorganic substrate as a pretreatment by dipping, spraying, or coating or it may be added directly to the resin matrix (additive process). For pretreatment, the silane may be used
To prepare an aqueous pretreatment solution, approx. 1-5 wt.% Dynasylan® MEMO is dissolved in water that has been adjusted to pH 3-4 with acetic acid. The solution will turns clear when the silane has fully hydrolyzed. The clear solution of Dynasylan® MEMO hydrolysate must be used within 1-2 days, if it turns cloudy again it may no longer be used. In the additive process, Dynasylan® MEMO is mixed with the resin or polymer before or together with the filler. A prerequisite for this method is compatibility of the silane with the resin since the silane must not react prematurely with the resin.
- a constituent of glass fiber sizes (glass fiber fillers for unsaturated polyester resins and polyolefins)
- a finish for glass fabrics used in unsaturated polyester resins
- as a surface modifier for pigments and fillers for thermosets (unsaturated polyester, MMA), thermoplastics (polyesters and polyolefins)and elastomers
- as an additive for filled, peroxide-crosslinked elastomers
- as an additive for casting resins (unsaturated polyester, MMA)
Dynasylan® MEMO is either applied to the inorganic substrate as a pretreatment by dipping, spraying, or coating or it may be added directly to the resin matrix (additive process). For pretreatment, the silane may be used
- neat
- dissolved in an organic solvent
- dissolved in a mixture of organic solvent and water for partial hydrolysis
- completely hydrolyzed in aqueous solution.
To prepare an aqueous pretreatment solution, approx. 1-5 wt.% Dynasylan® MEMO is dissolved in water that has been adjusted to pH 3-4 with acetic acid. The solution will turns clear when the silane has fully hydrolyzed. The clear solution of Dynasylan® MEMO hydrolysate must be used within 1-2 days, if it turns cloudy again it may no longer be used. In the additive process, Dynasylan® MEMO is mixed with the resin or polymer before or together with the filler. A prerequisite for this method is compatibility of the silane with the resin since the silane must not react prematurely with the resin.
Benefits at a glance
Dynasylan® MEMO acts as a molecular bridge to chemically bind the quartz into the resin. This molecular bridge cannot be mechanically destroyed resulting in a stable high-performance product. With no silane treatment, gaps exist between the filler surface and the surrounding polymer Matrix. These gaps are pre-determined fracture points in the filled polymer resulting in a low mechanical stability of the product.
Product Details
Technical Data Sheets
Further Information
Packaging:
Dynasylan® MEMO is supplied in 25 kg, 215 kg drums and 1.000 kg IBC bulk containers. Delivery in ISO container 24.000 liter is possible too.
Shelf life:
In the unopened container Dynasylan® MEMO has a shelf life of min. 12 months from delivery.