| KH-516 | KH-526 | |
| Chemical Name | 1,2-bis(trimethoxysilyl)alkane | 1,2-bis(triethoxysilyl)alkane |
| CAS number | 18406-41-2 | 16068-37-4 |
| Molecular structure | ||
| Molecular formula | C8H22O6Si2 | C14H34O6Si2 |
KH-526 (equivalent to Silquest Y-9805 of American Meitu Corporation)
Typical physical properties:
| index | 516 | 526 |
| Molecular weight | 270.4 | 354.6 |
| Appearance and smell | Colorless to light yellow clear transparent liquid, with the smell of aromatic solvents. | |
| Density (ρ20), g/cm3 | 1.068 | 0.957 |
| Boiling point (760mmHg), ℃ | 103 | 96 |
| Solubility | It is soluble in most aliphatic and aromatic solvents such as alcohol, ketone, ether and benzene. When hydrolyzed in water, the hydrolysate will self-polymerize. | |
Product characteristics and uses: The
silane coupling agents KH-516 and KH-526 belong to a new type of double silane, that is, there are two silane structures in the same molecular structure. They have 6 alkoxy groups per molecule, which is double that of ordinary silane coupling agents. Therefore, KH-516 and KH-526 can form a higher cross-linking density on the surface of inorganic materials; at the same time, the silanol formed after hydrolysis of this product is more acidic than the silanol formed by ordinary silane coupling agents, so It can form a stronger covalent bond with the hydroxyl group on the surface of metal and inorganic materials, and is not easy to hydrolyze.
The specific uses of the silane coupling agents KH-516 and KH-526 include:
1. Environmentally friendly phosphorus-free and heavy metal-free surface treatment liquid, replacing traditional phosphating and passivation processes.
2. The cross-linking agent in the adhesive and sealant provides moisture curing function and improves the adhesion to the substrate.
Packing: 20KG/barrel.
Storage conditions and shelf life: Store indoors in a dark place, keep ventilated, cool and dry. Make sure the lid is well sealed and can effectively isolate the air. The shelf life of the original packaged products is one year, and expired products can only be used after passing the test.
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