Description
Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants
Applicable temperature range: -5-60 degrees can be used
Waterproofing and sealing during Cement board
Waterproofing and sealing of Glass room, steel structure
waterproof and thermal insulation engineering, etc.
Popular Size :
17mmX17mm
20mmX20mm
25mmX25mm
Used for waterproofing of steel structures, waterproof and thermal insulation engineering, tunnels, etc.
Used in vacuum introduction processes, such as the production of wind power blades, yachts, aerospace and other
|
Material |
Butyl rubber |
|
Density |
1.35-1.65 Kg/m3 |
|
Butyl Rubber % by weight |
50 min |
|
Ash-Inert Mineral Matter, % by weight |
30 min |
|
Volatile Matter, % by weight |
3 max |
|
Ductility at 77°F, cm |
5.0 min |
|
Flash Point, C.O.C. |
350°F min |
|
Fire Point, C.O.C. |
375°F min |
|
Compression Index at 77°F, lbf/in.3 /at 32°F, lbf/in.3 |
100 max 200max |
|
Cone Penetration at 77°F, dmm /at 32°F, dmm |
50 to 120 30 min |
Why use butyl rubber sealant ?
Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene,ₙ, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, but has two methyl groups substituted on every other carbon atom, rather than one. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor
