Already with a 100% application success rate, Belzona’s
high-tech pipe wrap repair system has undergone a major reformulation and
enhancement.
Belzona Research and Development Manager, Jevon Pugh
said, “Following the success and popularity of Belzona SuperWrap over the
course of seven years, our R&D team has been busy developing and
redesigning numerous aspects of the technology to create a superior composite
repair and protection system, Belzona SuperWrap II.”
Belzona SuperWrap II has achieved compliance with
industry standards; ISO 24817 (Composite Repairs for Pipework) and ASME PCC-2
Article 4.1 (Nonmetallic Composite repair systems: high risk applications).
A Simple, Two-part
Epoxy Resin System Driven by SuperWrap’s success and popularity, the Belzona
R&D Department conducted a rigorous series of independent and in-house
tests to determine ways in which the system could be enhanced. These tests
include Young’s modulus, Poisson’s Ratio, Shear Modulus, Thermal expansion,
Glass Transition Temperature, Shore D Hardness and Lap Shear testing, 1000 hour
survival tests for through wall and thin wall defects, physical testing to validate
that the repair system strength meets the values generated by the independent
laboratory testing. Following this careful and painstaking process, SuperWrap
II was born.
The new wrap system comprises of two Belzona products; a
cold curing fluid grade epoxy resin and a hybrid reinforcement sheet consisting
of glass fibre and carbon fibres, which have been woven together to give an optimized balance of strength and flexibility.
In
order to achieve a versatile product, SuperWrap II is now available with two
different resin grades, Belzona 1981 and Belzona 1982. The main difference
between these resin grades is the end service temperature and working life of
the resin. Belzona 1981 has been developed for cool ambient temperatures above
5°C and has a maximum service temperature of up to 60°C, while Belzona 1982 has been designed for warm ambient temperatures
above 20°C and has a maximum service temperature of
up to 80°C.
Testing
Performed- Wrap Outlasts Steel
During
the Annex C test (ISO 24817) and Appendix III (ASME PCC-2 Article 4.1), a test
designed to rebuild the damaged section of pipe back to its original yield
strength, the repair withheld the calculated yield pressure of the substrate,
whilst the original steel profile showed signs of yielding.
Quick and Easy Application
Procedure
The fluid grade product and simple wet out procedure
enables quick application times along with wet on wet application procedure.
-
First apply the
selected resin grade product, Belzona 1981 or Belzona 1982, to the blasted
substrate.
- On to this, the
Belzona 9381 reinforcement sheet, wetted with the selected low density resin
(Belzona 1981 or Belzona 1982), is spiral wound onto the repair area, adding
strength.
- When all wraps have
been applied to specification, further resin grade product is then applied on
top of the reinforcement layers if required.
- The repair is then
consolidated by tightly wrapping the Belzona 9382 Release Film over the repair
area, ensuring a high quality laminate, with no air entrapment or voids.
Because this system uses higher density carbon and glass
reinforcement than most, typically only three or four spirals or wraps are
required, significantly cutting application time when compared to other
systems.
Theoretical and
Practical Training
In addition to improving the material’s characteristics,
Belzona has also perfected the theoretical and practical training courses to
ensure Belzona SuperWrap II designers, installers and supervisors are fully
trained and proficient in the use of the system.
Belzona SuperWrap II, The
Complete Package
-
Suitable for service
temperatures 5°C to 80°C
- 24 hour back in service
(48 hour back in service at <10°C)
- Long usable life in hot climates (30 minutes at
30°C)
- Convenient mixing ratio
- Easy to apply (minimal
downtime, simple techniques, ease of wetting out)
- Thermal expansion
coefficient close to steel
- High Young’s modulus
- Low Poisson's ratio
For more information contact: Belzona, www.belzona.com