Bis-(3-triethoxysilylpropyl)-tetrasulfide
>> Chemical formula and molecular weight
Chemical formula:C18H42O6S4Si2
Molecular weight:296.32
CAS NO.:538.95
>>Properties
A pale yellow transparent liquid with a slight ethanol-like odor, it has a flash point of ≥100 ℃ and a specific gravityof 1.08±0.02. It is easily soluble in various solvents such as ethanol, acetone, benzene and toluene. It is insoluble in water, but tends to hydrolyze when in contact with water or moisture.
It is mainly used as a reactive diluent in UV-curable coatings and inks.
Mainly used as a reaction diluent for UV cured coatings and inks
>>Uses
A bifunctional polysulfide organosilane coupling agent that has been successfully used in the rubber and plastic industry.
Suitable for vulcanized rubber systems with fillers such as white carbon black, glass fiber, talc powder, mica, clay, etc. as reinforcing agents, it can improve the reinforcing ability of fillers and increase the wear resistance of rubber.
As a rubber additive - vulcanizing agent, activator, suitable rubber types include NR, NBR, SBR, IR, BR, EPDM, and their combined rubber compounds. During the vulcanization process, the crosslinking rate of 669's polysulfide groups is basically the same as the sulfur reversion rate in sulfur vulcanization, which plays a role in resisting vulcanization reversion and improving the dynamic bending properties of rubber such as heat generation and crack extension. Multiple S atoms can also promote vulcanization.
Can be used to produce products under dynamic and static working conditions, such as tires, hoses, rubber rollers, tapes, cable insulation and covering materials, shoes, and mechanical casting products, which can improve their wear resistance, shear resistance, and pressure resistance; Reduce lag and water absorption; Improve its mechanical and adhesive properties; Enhance its thermal aging performance, modulus, and flexural life.
Adding sulfur-containing silane coupling agents to the rubber tire industry can not only reduce the risk of tire blowouts caused by high temperatures during high-speed or long-term driving, but also reduce the rolling resistance of tires on road surfaces, thereby reducing gasoline consumption and CO2 emissions, achieving the concept of energy conservation and carbon reduction.
Quality specification
Item | Specifications |
Appearance | Light yellow transparent liquid |
ethanol content | ≤0.5% |
V2content α | ≤3.0% |
Other impurity content β | ≤1.0% |
viscosity(25℃) | ≤19.0(cps) |
Sulfur content | 22±1% |
α: Gamma chloropropyl triethoxysilane β: Mainly some organic silicon impurities
>>Product Usage
Suggested usage: 1.0~4.0 PHR.
>>Package and condition of storage
Packaging: Packaged in plastic drums, with net weights of 25kg, 200kg, and 1000kg per drum.
Keeping away from light, save at room temperature.