Amino modified silane
RT-6069
Features and advantages:
- Strong amino reaction activity
- Improve the mechanical properties of composite materials
- Improve compatibility between inorganic fillers and polymers
Product Specifications:
| appearance |
Colorless to light yellow transparent liquid |
| Refractive index (ND 25ºC) |
1.4460
|
| Density (20ºC) |
1.030 g/ml
|
| Flash point |
88ºC
|
| Boiling point (760mmHg) |
259 ºC
|
Application field:
- This product is suitable for phenolic, melamine, epoxy and polypropylene resins to improve surface finish, dry and wet mechanical strength and electrical properties of the product.
- As an inorganic surface treatment agent, this product can activate process glass fiber, glass wool, white carbon black, talc powder, mica, clay and wollastonite.
- As a reinforcing agent of resin sand, this product is used for precision casting, oil well sand consolidation, can increase the strength of resin sand and moisture state, reduce the amount of resin.
- This product can be used as a bonding accelerator in coatings and inks to improve adhesion, reduce curing temperature, improve weather resistance, etc.
- The use of this product in the casting industry can reduce the amount of resin in silica sand, improve the strength of mold sand (about 30%) and reduce the gas generation.
- In magnetic materials, the dispersion adhesion of magnetic particles in plastic-magnetic and rubber magnetic particles in organic matter can be improved, so that the magnetic particles have a higher orientation. In order to obtain better magnetic properties, improve the mechanical strength of magnetic materials, weather resistance and easy to dry and easy to process.
How to use:
When this product is used as an additive, the amount of silane added is generally 0.5-3.0% of the formula amount, and the most appropriate amount needs to be determined by experiment.
This product is especially suitable for applications where the ambient humidity is high. Like other silanes, this product can be configured as an aqueous solution with a concentration of 0.1-1.0%. To prepare this aqueous solution, simply add the product directly to the deionized water under agitation and continue stirring until the solution becomes clear and transparent. Since the configured silane solution is unstable and will gradually form a oligomer of silane, it is recommended that the configured silane solution be used within 24 hours. If turbidity precipitation occurs in the storage process, it will affect the performance of silane aqueous solution and can not be used. The surface of inorganic materials can be treated with silane aqueous solution by spraying, coating, impregnation, etc. The silane can also be directly mixed with the filler at high shear without adding any solvent. After the surface of the filler is treated with silane, it can be dried naturally or for a short time at a temperature of 105 to 120 ° C to complete the condensation of silanol groups on the surface and remove methanol and water. The optimal addition amount, use and drying conditions (such as time and temperature) for each application need to be experimentally determined. This product will produce a small amount of low molecular alcohol in the reaction, in the production process should consider the appropriate ventilation system for treatment.
Solubility:
This product is easy to hydrolysis, soluble in isopropyl alcohol, acetone, toluene, xylene, mineral oil and other organic solvents. In general, silane can be dissolved in many common organic solvents, but when using a specific solvent, the solubility and stability of silane in that solvent should be verified.
Volatile and active components:
For silanes, most of the methods for detecting volatiles and active components by measuring mass changes at a set temperature, such as GB/T 1725-2007, ASTM#D2369, etc., are not suitable for the determination of silanes. Because alkoxysilanes have a tendency to hydrolysis during the detection process, some silanes with higher reactivity are also hydrolyzed and accompanied by more other reaction tendencies. Once hydrolysis occurs, a large number of low alcohols will be produced, which will affect the quality determination of low boiling point substances, making the test results seriously deviate from the actual situation. At present, the more reliable method for the determination of volatile and active components of organosilicon is gas phase or liquid chromatography.
Chemical properties:
- Amino reaction activity
These silanoxanes have the usual amino reaction activity. Amino silanes have their special characteristics, and hydrolysis can occur quickly without adjusting the PH value. Therefore, amino silanes are highly soluble in water and undergo hydrolysis reactions at the same time, of course, attention should be paid to exothermic and alcohol production.
- Alkoxy reactivity
Silanes containing alkoxy group have typical chemical properties of alkoxy group. Alkoxysilane is easy to hydrolyze in aqueous environment, resulting in silanol structure. In theory, the structure of silanol is prone to self-condensation reaction, and the stability is poor, but silanol diluted to a certain concentration can have appropriate stability in polar solvents such as water or alcohol, and the stability is better in weakly acidic systems. The silyl alcohol structure can be condensed with the hydroxyl group on the surface of the substrate, and the remaining silyl alcohol bonds can be condensed with the silyl alcohol bonds on other silane molecules or form hydrogen bonds. Through the combination of covalent bond and hydrogen bond, silane is attached to the surface of the substrate, thus playing a role in modifying the surface of the substrate. At the same time, other organic functional groups on the silane molecule can maintain the chemical activity of the subsequent reaction.
Packing: This product is packed in 5L, 20L plastic drum and 200L closed iron drum.
Storage and precautions:
After this product is opened, the container containing the remaining product should be filled with dry nitrogen or other dry inert gas to prevent gelling due to the intrusion of moisture in the air. When stored in the original unopened container at atmospheric pressure below 20 ° C, the shelf life of the product is 12 months from the date of production.
Packing: 25kg inner coated iron drum /180kg ring plastic drum
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