Chemical Name: Bis [3-(triethoxysilyl) propyl] tetrasulfide
Formula: (C2H5O)3SiCH2CH2CH2-S4-CH2CH2CH2Si(OC2H5)3
Physical Properties:
A pale yellow clear liquid with light odor of ethyl alcohol and soluble easily in ethyl alcohol, acetone, benzene, toluene etc. Insoluble in water.
Specifications
Test Item | Target Values(Spec.Limits) |
Alcohol content | ≤0.5% |
*γ2 Content | ≤3.0% |
Other impurity content | ≤1.0% |
Viscosity 25℃ (cps) | ≤14 |
Sulfur Content | 22% ± 1% |
The average sulfur chain length | 3.75±0.15 |
Specific Gravity (25℃,g/cm3) | 1.080 ± 0.020 |
Refractive Index (25℃) | 1.480±0.020 |
Application Range
1. Si-69 is a kind of multifunctional silane coupling agent that has been used successfully in the rubber industry. It is used to improve physical and mechanical properties of vulcanizates.
2. It is able to markedly improve tensile strength, tearing strength and abrasive resistance and reduce compression set of vulcanizates. In addition, it can reduce the viscosity and improve the processability of rubber products.
3. Si-69 is especially suitable to improve the reinforcing properties of fillers that contain hydroxyl groups in all unsaturated polymers having double bonds or their blends. Silica, talc powder, mica powder and clay can be used in combination with SI-69 in polymers such as NR, IR, SBR, BR, NBR and EPDM. Recommend dosage 1.0-4.0 PHR
Package and storage
1. Package: 25kg or 200kg, 1000 kg in plastic drum.
2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.
3. Shelf life: One year in ventilating, cool and dry area.
