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viscoelastic anti corrosive ta

viscoelastic anti corrosive ta

Introduction
ZD-NT-I viscoelastic anti corrosive tape is specifically for buried pipeline and other anticorrosive specific equipment such as flange, valve, pump, etc, which is a new researched and designed anti-corrosion products. The product is a never cured visco elastic polymer, with unique cold flow properties, and in antisepsis and repair process can achieve self repair function, to realize full protection effect. This product is painting without priming, no loss, no cracking, no hardening, has a strong cohesive force, good resistant chemical and without cathodic protection peeling phenomenon, completely eliminate water invasion and microbial corrosion, enable it to have the unique effect.
 
         
features
Self repair minor injury
  
visco elastic anti-corrosion material has a liquid features, suffering from stones, gravel failure, with self repair function, even if the external environment change (for example earth pressure change or earthquake, etc.), not change and cracking or peeling because of the environment,it can still be remain forever and the surface of the steel pipe tightly attached on the state, seal almost is not affected.
 
Anti - corrosion adhesive tape containing water removal agent, and it has a very good hydrophobicity, the exclusion of moisture, the environment can not penetrate the water surface of the pipeline.
 
Thoroughly put an end to microbial corrosion
After the metal surface is pasted, the water will be completely cut off, the bacteria can not grow, and the corrosion behavior (MIC) caused by bacteria can not happen naturally.
 
Wide temperature application scope, -45℃—+85℃。
 
Without brushing primer, can be directly bonded to 3PE, FBE, liquid epoxy coating, asphalt, PP and other coatings
 
The construction is simple, convenient and quick, the construction quality is easy to control, and the technical level of the personnel and the environment influence is small.
 
 
Not aging, performance to achieve the standard requirements of the service life of more than 40 years
 
Technical Parameter
Item Technical Parameter
Thickness mm ≥1.8
Applied Temperature Scope -45℃- +85℃
Peel Strength
(23℃)
 
Steel Strength (N/cm) ≥5
Coverage Rate (%) ≥95%
PE Strength (N/cm) ≥5
Coverage Rate (%) ≥95%
Peel Strength (-45℃) Steel
 
 
Strength (N/cm) ≥50
Coverage Rate (%) ≥95%
Shear Strength(23℃) Steel
 
Strength (MPa) ≥0.02
Coverage Rate (%) ≥95%
Shear Strength(-45℃) Steel Strength(MPa) ≥1.0Mpa
Coverage Rate (%) ≥95%
Drop Down (85℃,72h) No
Insulation resistance(Ω·m2) Rs100 ≥108
Rs100/Rs70 ≥0.8
Water absorption (%) ≤0.03
Peel strength after soaking in hot water (70℃,120d) ≥2, Coverage rate ≥95%
Heat Aging (90℃,100d) ≥2, Coverage rate ≥95%
Chemical resistance
(90d)
 
10%HCL No change
10%NaOH No change
3% NaCL No change
 
 Perfromance
In transmission gas pipeline station field of flanges and valve applications, or for the cold pipeline local maintenance, and new production pipeline repair anticorrosion layer, ZD-NT-I viscoelastic anticorrosive tape should be used with ZD-YH-I outer protective adhesive tape, the performance of composite layer is as follows:
ZD-NT-I +ZD-YH-Icomposite layer performance data
No Item Data
1 Impact strength J
(23℃testing voltage 5kv/mm+5kv)
viscoelastic tape + outer protective tape ≥5
2 Indentation hardness of composite layer
(23℃10MPa,testing voltage 5kv/mm+5kv)
Balanced thickness,mm ≥0.6
3 Cathode stripping,mm 65℃,48h ≤5
23℃±2℃,28d ≤8
4 Composite layer weather resistance
,outdoor,100d
Straight round pipe on the outdoor placement
 
No change
In the high clay region, stonework section area, pipeline depth case, to ensure complete resistance to the shearing effect of soil, ZD-NT-I visco elastic tape is used with ZD-BLG-I UV curing protective sleeve. The composite layer performance is as follows:
ZD-NT-I +ZD-BLG-Icomposite layer performance data
No Item Data
1 Impact strength J
(23℃testing voltage 5kv/mm+5kv)
viscoelastic tape + outer protective tape ≥5
2 Indentation hardness of composite layer
(23℃10MPa,testing voltage 5kv/mm+5kv)
Balanced thickness,mm ≥0.6
3 Cathode stripping ,mm 65℃,48h ≤5
23℃±2℃,28d ≤8
4 Composite layer weather resistance
,outdor,100d
Straight round pipe on the outdoor placement No change
5 Sand box experiment
(100次)
23℃ Edge wittout
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