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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

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