Polinvent / Epoxcure

Application

Curing conditions

Curing time of impregnated liner until reduction in installation pressure

Ambient cure: 72 °F (4 - 6 h)

Hot cure: 140 °F (~1 - 2 h)

Higher curing temperature reduces the time needed before pressure can be released.
At the listed times the material is not fully cured; full cure develops after 1 to 2 weeks or with prolonged heat treatment.

Mixing guidance

Use a clean, dry plastic vessel for mixing.
Mix components A and B with a drill and paint-mixing rod at 300 to 600 1/min for 1 to 3 minutes.
Move the mixing rod horizontally and vertically to homogenize the full volume and keep air entrapment as low as possible.
Keep the components between 59 °F and 77 °F during mixing.

Epoxcure L15

Liquid component technical data

density of 'A' component: 0.0434 ± 0.0036 lb/in³

viscosity of 'A' component: 2500 ± 200 cP

density of 'B' component: 0.0361 ± 0.0036 lb/in³

viscosity of 'B' component: 600 ± 100 cP

density of mixture: 0.0397 ± 0.0036 lb/in³

viscosity of mixture: 2300 ± 250 cP

Mixing ratio (by mass): 100A : 44B

Hardened resin technical data

Young's modulus: > 464122 PSI

Tensile strength: > 5802 PSI

Elongation at break: > 1 %

Flexural modulus: > 464122 PSI

Flexural strength: > 14504 PSI

Compression strength: > 20305 PSI

Shore-D hardness: > 80

Glass-transition temperature: > 176 °F

Heat deflection temperature (HDT): 149 ± 9 °F

Chemical resistance

To assess chemical resistance, we introduced a rating system from 1 to 5, with 5 indicating the highest resistance.

Normal petrol

Super petrol

CaCl2- saturated

Diesel

Acetic acid 10%

Acetic acid 20%

Ethanol

Oil

Phosphoric acid 10%

H2O2 30%

H2O2 5%

H2SO4 10%

H2SO4 20%

H2SO4 40%

HCl 10%

HCl 37%

HNO3 10%

HNO3 20%

HNO3 40%

IPA

MgCl2- saturated

NaCl 20%

NaOH 10%

NaOH 30%

NaOH 50%

Lactic acid 10%

Toluol

Assessment guide

Mechanical properties changed significantly (color may change).

The coating is not suitable for storing the test chemical.

Mechanical properties changed considerably (color may change).

The coating may suit storage for less than 1 week.

Mechanical properties changed moderately (color may change).

The coating may suit storage for less than 1 month.

Mechanical properties changed slightly (color may change).

The coating may suit storage for 1 to 2 months.

Mechanical properties remained unchanged (color may change).

The coating is suitable for permanent storage of the test chemical.

Assessment guide based on one month of soaking at 77 °F.

The specimen surface was exposed to permanent contact with the test chemical.