Cured in place pipe (CIPP) enables no dig, rehabilitation and repair of wastewater and drinking water pipes

Ancamine® 2927 provides you with a high performance hardener that can be processed in a wet-out facility

Global population increase and damaged water infrastructure have led to an increased demand in water infrastructure repair technologies (WIRT). Those technologies may be categorized as either open cut or trenchless repair methods. The type of method chosen depends on several factors like degree of damage or surrounding environment. One of the most common methods for trenchless technologies is Cured-In-Place-Pipe (CIPP). It requires significantly less work time, reduces maintenance and is therefore cheaper than other repair methods.

CIPP rehabilitation begins with the impregnation of a liner with a resin. This step can be done either at a wet-out facility or directly on the jobsite. The liner is then inserted into the existing pipe, inflated and finally cured by e.g water or steam. When customers are looking for excellent performance, epoxy is the resin of choice. It exhibits excellent adhesion to the substrate, high toughness and low shrinkage. Furthermore, epoxy shows low water absorption and high chemical resistance and does not contain any volatile components that would lead to emissions. Today Evonik offers a broad portfolio of epoxy hardeners that show excellent performance and allow fast curing.

Nevertheless, due to their high reactivity at room temperature, today epoxy is limited in its processing and therefore it is only used for impregnation on the jobsite.

Addressing this need for hardeners that show high performance and can also be processed in a wet-out facility Evonik developed Ancamine® 2927

In combination with standard epoxy resins Ancamine® 2927 shows outstanding pot life and low viscosity and yet allows fast curing at elevated temperatures.

Ancamine® 2927 curing agent is designed to have a good balance of long latency and relatively low temperature cure with liquid epoxy resin. The low viscosity enhances the fabric wetting, minimizes material waste and improves overall throughput. It is recommended for use in cured-in-place-pipe and composites applications.

Properties

Unit

Ancamide® 2798

Ancamide® 2781

Ancamine® 2927

Use level (PHR)

g

46

55

15

Gel time 150 g mix @25°C

h

2

8

30

Temperature @ 60 °C

  • Time to peak
  • Peak temperature

min

°C

25

185

90

95

90

140

Felt stability at 5°C

d

-

1

7

Hot water cure (65°C)

h

2

4

3

Steam Cure (90°C)

h

1

2

2

Ancamine® 2927 curing agent is designed to have a good balance of long latency and relatively low temperature cure with liquid epoxy resin.

Applications

  • Cured-In-Place Pipe
  • Composites – Filament winding, VARTM

Benefits

  • Long pot life
  • Rapid cure
  • Low viscosity
  • No VOC

Ancamide® 2781 curing agent is a versatile, low viscosity hardener designed to cure liquid epoxy resin at elevated temperatures.

Applications

  • Cure-in-Place-Pipe
  • Composites – Filament winding, VARTM
  • Resin Infusion
  • Potting and encapsulation

Benefits

  • Longer working time
  • Low exotherm
  • Low viscosity

Ancamide® 2798 curing agent is a modified aliphatic amidoamine curing agent designed for use with liquid epoxy resin.

Applications

  • Filament winding
  • Composites and wet lay-up

Benefits

  • Moderate pot life
  • Low viscosity
  • Enhanced reactivity

Please note that products may not be available in every country. Consult with your area sales manager for further information.