Evaluating Cortec VpCI-146 Paper with Requirements Listed in Performance Specification MIL-PRF-3420G

Background:     Cortec Corporation is seeking to have Cortec VpCI-146 listed on qualified product list MIL-PRF-3420G.  The process of getting listed, involves Cortec Corporation performing the requirement tests as listed in performance specification MIL-PRF-3420G.  Upon attaining results in compliance with what is listed in performance specification MIL-PRF-3420G, Cortec Corporation will submit product to Naval Air Systems Command. Naval Air Systems Command will then repeat testing to confirm results attained by Cortec Corporation.

 

Purpose:           Perform the tests as indicated in performance specification MIL-PRF-3420G and compare results with listed result requirements.

 

Method:            Compatibility with Copper Test (MIL-PRF-3420G, Section 4.6.4)

Vapor inhibitor ability Test (FED-STD-101 Test Method No. 4031, procedure B)

Vapor inhibitor ability after exhaustion Test (FED-STD-101 Test Method No. 4031, procedure B)

Contact Corrosivity Test(FED-STD-101 Test Method No. 3005)

Blocking Resistance Test(FED-STD-101 Test Method No. 3003, procedure A)

Water resistance of markings Test (FED-STD-101 Test Method No. 3027)

Bursting Strength Test(FED-STD-101 Test Method No. 2007)

Tearing Strength Test (ASTM D689)

Compatibility with MIL-PRF-131 barrier material Test (MIL-PRF-3420G, Section 4.6.5)

Long Term Protection Test (MIL-PRF-3420G, Section 4.6.3)

Materials:          Cortec VpCI-146 paper

The materials used for the above listed methods, are indicated in each test method standard operating procedure.

Procedure:         The above tests were performed according to standard procedures for each.

 

Results:

 Compatibility with Copper

Procedure was done according MIL-PRF-3420G, section 4.6.4.2

Compatibility with Copper test results

Material Corrosion amount (%) Performance Requirement
Copper panel wrapped with Cortec VpCI-146 paper 0 No pitting, etching or discoloration of vapor exposed copper surface
Copper panel wrapped with Cortec VpCI-146 paper 0 No pitting, etching or discoloration of vapor exposed copper surface
Copper panel wrapped with Cortec VpCI-146 paper 0 No pitting, etching or discoloration of vapor exposed copper surface

 

Vapor inhibitor ability

Procedure was done according to FED-STD-101 Test Method No. 4031 procedure B

Vapor inhibitor ability test results

Material Corrosion observed (%) Performance Requirement
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Control ~ 40

Vapor inhibitor ability (after exhaustion)

Procedure was done according to Fed-STD-101 Test Method No. 4031 procedure B

Vapor inhibitor ability (after exhaustion) test results

Material Corrosion observed (%) Performance Requirement
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Cortec VpCI-146 0 No corrosion, etching or pitting of polished surface of steel panel
Control ~ 62

Contact Corrosivity

Procedure was done according to Fed-STD-101 Test Method No. 3005

Carbon Steel panels used.

Contact Corrosivity test results

Material Amount of corrosion

after 20 hours (%)

Performance Requirement
Cortec VpCI-146 0 No corrosion, etching or pitting of contact area of panel
Cortec VpCI-146 0 No corrosion, etching or pitting of contact area of panel
Cortec VpCI-146 0 No corrosion, etching or pitting of contact area of panel

Blocking Resistance

Procedure was done according to FED-STD-101 Test Method No. 3003 procedure A

Blocking Resistance test results

Material Qualitative results Performance Requirement
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets
Cortec VpCI-146 No blocking, delamination or rupture No delamination, tearing or flaking when the sheets

Water resistance of Markings

Procedure was done according to FED-STD-101 Test Method No. 3027

Water Resistance of Markings test results

Material Qualitative description of markings after

two hours in circulating water bath

Performance Requirement
Cortec VpCI-146 Observed markings are clear and legible Markings shall be clear and legible
Cortec VpCI-146 Observed markings are clear and legible Markings shall be clear and legible
Cortec VpCI-146 Observed markings are clear and legible Markings shall be clear and legible

Bursting Strength

Procedure was done according to FED-STD-101 Test Method No. 2007

Bursting Strength test results

Material FED-STD-101 Test Method No. 2007;

Bursting Strength (psi)

Performance Specification
Cortec VpCI-146 paper 42.28/43.04 40

Note: Printed side up/Printed side down

See Enclosed report

Tearing Strength

Procedure was done according to ASTM D689

Tearing Strength test results

Material ASTM D689 Tearing Strength (gf) Performance Requirement (gf)
Cortec VpCI-146 paper 39.0/42.4 40/40

Note: Machine Direction/Cross Direction

See Enclosed report

 

Compatibility with MIL-PRF-131 Barrier Material

Procedure was done according to MIL-PRF-3420G, section 4.5.6.2

Compatibility with MIL-PRF-131 Barrier Material test results

Material Deterioration amount on surface of Cortec VpCI-146 paper % Performance Requirement
Cortec VpCI-146 paper 0 No delamination, swelling, embrittlement, dissolution, effect on the sealability or deterioration of barrier materials
Cortec VpCI-146 paper 0 No delamination, swelling, embrittlement, dissolution, effect on the sealability or deterioration of barrier materials
Cortec VpCI-146 paper 0 No delamination, swelling, embrittlement, dissolution, effect on the sealability or deterioration of barrier materials

Long Term protection test

Procedure done according to MIL-PRF-3420G sections 4.6.3.1 and 4.6.3.2

Long term protection test results

Material Corrosion amount on four panels after one year (%) Performance Requirement
Cortec VpCI-146 paper 0 No corrosion of steel panels
Cortec VpCI-146 paper 0 No corrosion of steel panels
Cortec VpCI-146 paper 0 No corrosion of steel panels
Cortec VpCI-146 paper 0 No corrosion of steel panels

 

Conclusion:       Cortec VpCI-146 corrosion inhibiting paper satisfies the testing requirements of Performance Specification MIL-PRF-3420G.

 

Project #:  02-002-1125 (2)

 

Estimated Cost of Project:  $4,500.00

To:         Frank Magnifico/Naval Air Systems Command

From:     Bob Berg

Date:       4/9/03

cc:          Boris Miksic

Anna Vignetti

Art Ahlbrecht

Rita Kharshan

Cliff Cracauer

Vanessa Schultz

Bob Boyle