Bis-(3-(triethoxysilane)-propyl)-tetrasulfide KH-Si69

Chemical name: Bis-[γ-(triethoxysilyl)propyl] tetrasulfide

Molecular formula: (H₅C₂O)₃Si(CH₂)₃·S₄·(CH₂)₃·Si(OC₂H₅)₃

Physical and chemical properties and indicators:

This product is a light yellow transparent liquid with a slight smell of ethanol. It is soluble in ethanol, ketones, benzene, acetonitrile, dimethylformamide, dimethyl sulfoxide, chlorinated hydrocarbons, but insoluble in water.
Appearance: Light yellow to yellow transparent liquid
Content (%): ≥22.0
Density (ρ20 )g/cm³: 1.089±0.005
Refractive index (n): 1.4850±0.0005
Viscosity: 11.2cst

Application: It is often used to treat carbon black, SiO₂ and other inorganic fillers. It not only has the role of activator and coupling agent, but also has the role of crosslinking agent, softener and reinforcing agent. It is used as a reinforcing agent in the rubber industry. And curing agent. Can be used for natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, butyl ester rubber, neoprene rubber, butyl rubber, halogenated butyl rubber, EPDM rubber and oil-extended rubber of these rubbers, It can also be used in combination of these rubbers.

Function:

1. Unvulcanized rubber compound
(1) Reduce Mooney viscosity; (2) Reduce scorch phenomenon; (3) Increase the degree of vulcanization; (4) Improve mixing, calendering, and extrusion characteristics greatly.
2. Vulcanized rubber
(1) Increased tensile strength; (2) Increased fixed tensile strength; (3) Reduced permanent deformation; (4) Improved heat generation and dynamic characteristics; (5) Improved silicon abrasion performance: (6) The tear strength is improved; (7) The swelling in water and other substances is improved.