The direct mixing method directly adds silane to the batch material is the easiest way to couple the particulate filler in the liquid resin. For example, when mixing rubber, silane granular filler is directly incorporated for immediate treatment. The effect of the addition of silane depends on the ability of the filler to adsorb silane during the mixing operation.

The filler is treated with an organic solvent of silane by mixing the filler with a dilute solution of the silane in an organic solvent, followed by filtration and drying. Compared with the case of using an aqueous solution, the anhydrous solvent makes the silane deposited on the surface of the filler closer to the monolayer, and the treated fine particle filler is different from the case of the aqueous solution treatment, and does not agglomerate when dried.

Treatment of the filler with an aqueous solution When treating glass fibers, silane (and other complexing agents) dispersions in water are used almost exclusively. Treatment of coarse fillers such as glass beads and glass fibers with an aqueous solution is very effective, easy to dry and does not agglomerate. Fine particle fillers can also be treated with aqueous solutions, but spray dry bathing is required to avoid formation of lumps.

Treating fillers by dry blending The use of dry blending to treat fillers is desirable for high surface area fillers to retain large amounts of silane in the form of a stable dry powder so that when it is dry blended with resin or other untreated filler, it is available. Migrated monomeric silane. The sufficient dispersion of the silane on the surface of the filler may take more than a few days. Typical shipping and storage times are sufficient to adequately disperse the silane on the bulk of the filler. In general, ethoxysilane or propoxysilane is much more stable on the surface of the filler than methoxysilane. In the composite material, the silane coupling agent should be used. The characteristics of the organic polymer and the inorganic material should be fully considered, and the appropriate silane should be selected, and the correct use method should be selected according to the characteristics of the production process to obtain an economical satisfactory effect.