The main chemical components: CH2=CHSi (OCH3)3
vinyltrimethoxysilane
Physical and chemical properties:
| Appearance | colorless or light yellow liquid |
| Density: ρ(25/25°C) | 0.968 |
| Flash point (Tag sealed cup, ASTMD56) | 28°C |
| Refractive index n D 25°C | 1.3908 |
| Soluble | Water (hydrolysis), alcohol, toluene, acetone, benzene |
Introduction:
1. This product is modified to polyethylene and other polymers by grafting to the main chain of the polymer, so that the side chain of the polymer is provided with a trimethoxysilyl ester group as an active point for crosslinking with warm water.
The advantages of polymer cross-linking are: 1) better service temperature 2) polymer decomposition when reducing creep in the interior 3) improved chemical resistance 4) excellent resistance to pressure cracking 5) improved wear resistance 6) improved impact Strength 7) Memory characteristics (shrink film and tubing).
The advantages of silane crosslinking over radiation crosslinking or peroxide crosslinking are: 1) Low equipment investment 2) Low production cost 3) High productivity 4) Variety of processing technology 5) Suitable for various thickness and complex shapes 6) Greater process latitude (control premature crosslinking) 7) Suitable for filled composite materials 8) Suitable for many density polyethylene and copolymers
Use:
In the extruder, this product can be grafted to the polyethylene main chain through the action of peroxide initiator. This grafted polyethylene can be made into shaped products, such as cable jackets and insulation, pipes or other extruded and molded products. This is the next extrusion process. This molded product is completed by warm water crosslinking.
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