Technical Data Sheet - PPG Aerospace

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Transcript

W h e r e S m a r t S o l u t i o n s T a k e F l i g h t ®
Desc r ip t ion
PR-1772 Class B is a low weight sealant. It has a service
temperature range from -65°F (-54°C) to 250°F (121°C),
with intermittent excursions up to 275°F (135°C). It offers
as much as a thirty percent weight savings, per unit volume, over traditional sealants used for these purposes. The
cured sealant maintains excellent elastomeric properties
after limited exposure to both jet fuel and aviation gas.
PR-1772 Class B is a two-part, chemically curing polysulfide
compound. The uncured material is a low sag, thixotropic
paste suitable for application by extrusion gun or spatula. It
cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
The following tests are in accordance with Boeing specification BMS 5-142 Class B specification test methods.
Appl i ca t ion P roper t ies
( Typ i ca l )
Color
Part A Black
Part B Off white
Mixed Dark brown
Mixing ratio, by weight Part A:Part B
B-2 10:100
Base viscosity
(Brookfield #7 @ 2 rpm),
Poise (Pa-s) 9,000 (900)
Slump, inches (mm)
Initial 50 Minutes 90 Minutes
B-2 0.15 (3.81) 0.15 (3.81) 0.15 (3.81)
Application life and cure time @ 77°F (25°C), 50% RH
Cure time
Application Tack free to 30 A
life time Durometer
(hours) (hours) (hours)
B-1 1 <4 <7
B-2 2 <6 <10
Per formance P roper t ies
( Typ i ca l )
Cured 14 days @ 77°F (25°C), 50% RH
Cured specific gravity 1.09
Nonvolatile content, % 91
Ultimate cure hardness,
Durometer A 45
Peel strength, pli (N/25 mm), 100% cohesion
Cured 14 days @ 77°F (25°C), 50% RH
MIL-C-5541 (Alodine aluminum) 35 (156)
MIL-A-8625 Type I CAA
(Anodized aluminum) 38 (169)
AMS 5901 (Stainless steel) 38 (169)
AMS-T-9046 (Titanium comp. B) 35 (156)
BMS 5-89 (Corrosion Inhibiting Primer) 37 (164)
BMS 10-11 Type I Grade A (Epoxy primer) 38 (169)
BMS 10-11 Type I Grade E (Epoxy primer) 34 (151)
BMS 10-11 Type II Grade A (Epoxy primer) 27 (120)
BMS 10-11 Type II Grade D (Epoxy primer) 37 (164)
BMS 10-20 Type II (Epoxy primer) 38 (169)
BMS 10-60 Type I Grade A
(Polyurethane topcoat) 35 (156)
BMS 10-60 Type II Grade A
(Polyurethane topcoat) 37 (164)
AMS-QQ-A-250/13 (Alclad) 36 (160)
AMS-QQ-A-250/12 (Bare Aluminum) 38 (169)
Type III fuel immersion, 7 days @ 120°F (49°C)
MIL-C-5541 (Alodine aluminum) 38 (169)
MIL-A-8625 Type I CAA (Anodized aluminum) 35 (156)
AMS 5901 (Stainless steel) 38 (169)
AMS-T-9046 (Titanium comp. B) 35 (156)
BMS 5-89 (Corrosion Inhibiting Primer) 32 (142)
BMS 10-11 Type I Grade A (Epoxy primer) 32 (142)
BMS 10-11 Type I Grade E (Epoxy primer) 29 (129)
BMS 10-11 Type II Grade A (Epoxy primer) 32 (142)
BMS 10-11 Type II Grade D (Epoxy primer) 37 (164)
BMS 10-20 Type II (Epoxy primer) 34 (151)
BMS 10-60 Type I Grade A
(Polyurethane topcoat) 36 (160)
BMS 10-60 Type II Grade A
(Polyurethane topcoat) 26 (116)
AMS-QQ-A-250/13 (Alclad) 36 (160)
AMS-QQ-A-250/12 (Bare Aluminum) 35 (156)
3% NaCl-H2O immersion, 7 days @ 120°F (49°C)
MIL-C-5541 (Alodine aluminum) 36 (160)
MIL-A-8625 Type I CAA (Anodized aluminum) 36 (160)
AMS 5901 (Stainless steel) 38 (169)
AMS-T-9046 (Titanium comp. B) 37 (164)
BMS 5-89 (Corrosion Inhibiting Primer) 35 (156)
BMS 10-11 Type I Grade A (Epoxy primer) 32 (142)
BMS 10-11 Type I Grade E (Epoxy primer) 34 (151)
BMS 10-11 Type II Grade A (Epoxy primer) 33 (147)
BMS 10-11 Type II Grade D (Epoxy primer) 37 (164)
BMS 10-20 Type II (Epoxy primer) 35 (156)
BMS 10-60 Type I Grade A
(Polyurethane topcoat) 36 (160)
BMS 10-60 Type II Grade A
(Polyurethane topcoat) 32 (142)
AMS-QQ-A-250/13 (Alclad) 37 (164)
AMS-QQ-A-250/12 (Bare Aluminum) 36 (160)
Tensile strength, psi (KPa)
Cured 14 days @ 77°F (25°C), 50% RH 190 (1311)
Type III fuel immersion, 7 days @ 120°F (49°C) 220 (1518)
Elongation, %
Cured 14 days @ 77°F (25°C), 50% RH 280
Type III fuel immersion, 7 days @ 120°F (49°C) 275
Corrosion resistance - No corrosion, adhesion loss, softening, or blistering after 7 day immersion in AMS 2629 JRF @
120°F (49°C).
TECHNICAL DATA
PR-1772 Class B Low Weight Fuselage Sealant
Resistance to hydrocarbons - 7 days @ 140°F (60°C)
immersed in AMS 2629 JRF.
Weight loss, % 4.9
Resistance to heat - No softening, sponging blistering, checking, cracking, shrinkage, or adhesion loss.
Flexibility - No cracks after bending 180 degrees over 0.125
inch (3.18 mm) mandrel.
Repairability to itself - Excellent to both freshly cured as well
as fuel aged and abraded fillets.
Note: The application and performance property values
above are typical for the material, but not intended for
use in specifications or for acceptance inspection criteria
because of variations in testing methods, conditions and
configurations.
Sur face P reparat ion
Immediately before applying sealant to primed substrates, the surfaces should be cleaned with solvents.
Contaminants such as dirt, grease, and/or processing lubricants must be removed prior to sealant application.
A progressive cleaning procedure should be employed using
appropriate solvents and a new lint-free cloth conforming
to AMS 3819. (Reclaimed solvents or tissue paper should
not be used.) Always pour solvent on the cloth to avoid
contaminating the solvent supply. Wash one small area at
a time.
It is important that the surface is dried with a second clean
cloth prior to the solvent evaporating to prevent the redeposition of contaminants on the substrate.
Substrate composition can vary greatly. This can affect
sealant adhesion. It is recommended that adhesion characteristics to a specific substrate be determined prior to application on production parts or assemblies.
For a more thorough discussion of proper surface preparation, please consult the SAE Aerospace Information Report
AIR 4069. This document is available through SAE, 400
Commonwealth Avenue, Warrendale, PA 15096-0001.
Mix ing Ins t ruc t ions
PR-1772 Class B is supplied in a two-part kit. Mix according to the ratios indicated in the application properties section. Mix Part A separately to uniformity, then thoroughly
mix entire contents of both parts of kit together taking care
to avoid leaving unmixed areas around the sides or bottom
of the mixing container.
All recommendations, statements, and technical data contained herein are based on tests we believe to be reliable
and correct, but accuracy and completeness of said tests are not guaranteed and are not to be construed as a
warranty, either expressed or implied. User shall rely on his own information and tests to determine suitability of
the product for the intended use and assumes all risks and liability resulting from his use of the product. Seller’s and
manufacturer’s sole responsibility shall be to replace that portion of the product of this manufacturer which proves to
be defective. Neither seller nor manufacturer shall be liable to the buyer or any third person for any injury, loss, or
damage directly or indirectly resulting from use of, or inability to use, the product. Recommendations or statements
other than those contained in a written agreement signed by an officer of the manufacturer shall not be binding upon
the manufacturer or seller.
Printed in U.S.A.
Storage L i fe
The storage life of P/S 1772 Class B is at least 9 months
when stored at temperatures between 40°F(4°C) and 90°F
(32°C) in original, unopened containers.
Hea l th P recaut ions
This product is safe to use and apply when recom-mended
precautions are followed. Before using this product, read
and understand the Material Safety Data Sheet (MSDS),
which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available on request. Avoid
overexposure. Obtain medical care in case of extreme overexposure.
For industrial use only. Keep away from children.
Additional information can be found at:
www.ppgaerospace.com
For sales and ordering information call
1-800-AEROMIX (237-6649).
PR-1772 Class B Low Weight Fuselage Sealant
PRC-DeSoto International, Inc.
12780 San Fernando Road
Sylmar, CA 91342
Telephone (818) 362-6711
Toll Free (800) AEROMIX
www.ppgaerospace.com
Issue Date: 05/16
Supersedes: 09/09
Lit: 3014

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