Vinyl Silane for Crosslinking Polyethylene, Silcat 17

• CAS No.: 2768-02-7
• Appearance: Liquid
• Usage: Crosslinking Agent
• Color: Light Straw
• Momentive: Silcat 17
• Type: Crosslinking Agent
• Model NO.: Silcat 17
• Transport Package: 200drum
• Specification: VINLY SILANE AND OTHERS
• Trademark: CapatueTM
• Origin: Nanjing
• HS Code: 2931900090
• Production Capacity: 100 Tons/Year

Product Description

 VINYL SILANE FOR CROSSLINKING POLYETHYLENE, Silcat 17

Description

SLC-17 is a modified vinyltrimethoxysilane containing a crosslinking tin catalyst. In order to be used as one-step (Monosil) crosslinking system, addition of a suitable peroxide is required.

 

Equivalent rProducts from Other Manufacturers

Silcat  17  from Momentive

 

Typical Properties

Index	Value
Appearance	Light straw
Specific Gravity @ 25ºC	0.968
Viscosity @ 25ºC, cst	1.4
Flash Point, Tag Closed Cup, ºC	28

 

Advantages of SLC-17

Low capital investment
Low operating costs
Higher productivity
Processing versatility
Thick, thin or variable thickness possible
Complex shapes possible
Wider processing latitude(control of premature crosslinking)
Useful with filled composites

 

Key features and Typical Benefits

1. The choice and concentration of the peroxide to be added can be easily adapted to the specific polyethylene grade and extrusion equipment used.
2.  After the addition of a peroxide initiator the SLC-17 can be used to crosslink stabilized, polyethylene grades in commercially available one-step extrusion equipment.

 

Reaction Sequence

Moisture content of the PE resin must be less than 200 ppm. In hot and humid countries pre-drying of the resin at 70ºC by means of an air desiccator is highly recommended.
Grafting: Optimum addition levels for a given application must be determined experimentally. Data collected on Nextrom extruders indicate that the dose levels of SLC-17 should be between 1.3 and 2.0 wt %.
Temperature profile setting of the extruder:

• Barrel                     150/150/150/190/200/200/210ºC
• Head and die              210ºC
• Screw                     80-100ºC

Crosslinking: Rate of cure is dependent upon time, temperature and thickness of the layer and available moisture. Sufficient crosslinking can be achieved by any of the following methods:

• Immersion in water at 80-90ºC ,or
• Exposure to low pressure steam at 105ºC,or
• Exposure to steam at atmospheric pressure

 

Patent Status

Nothing contained herein shall be construed to imply the nonexistence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of the patent.

 

Packing

The regular packing of this product is 25L PE pail, 200L steel drum and 1000L PE IBC.

 

Storage and Shelf Life

Should be stored in dry, cool, ventilated room; keep away from water, moisture, high temperature and fire. This product has a shelf life of at least 9 months if stored in tightly closed original container at room temperature.  
CAUTION: NEVER STORE THIS PRODUCT ABOVE 55ºC(131ºF)!
If this product is kept beyond the shelf life recommend on the product label, it is not necessarily unusable, but a quality control should be performed on the properties relevant to the application.