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Three-components water-based polyurethane surfacer for aircraft interiors with quick drying.
FR4-45 is intended to correct surface defects such as pin holes on composite and thermoplastic substrates.
Recommended for use in combination with Mapaero water-based topcoat FR2-55, FR6-55, FRC or DI-TEX (see TDS).

Fire Retardant Finishes for Cabin Interiors
Unit of Measure

Components

Base

 N/A FR4-45

Hardener / Catalyst

 N/A FR4-45

Thinner

 N/A Water

Specifications

Brands

 N/A AkzoNobel

Specifications

 N/A Qualified in accordance with:
Airbus: AIMS 04-08-001, ABS5650 A, CML 16-046, CML-04-BAM6
BMS 10-83 Type IX and Type IV
FMS 5520 class 2
C&D ZODIAC : CDM240-00, CDM240-01
Bombardier : DHMS C4.22
EMBRAER : MEP 10-132, MEP 10-075
Pilatus : PMS0600-52-02

Meets the following requirements:
JAR / FAR Part 25 §25.853 (a) + (c / d) / Change 14 / Amdt. 25-83

Product information mentioned in the technical datasheet is given for information purposes and can differ from requirements of specifications above. In that case, customer requirements are valid for your application.

Surface Conditions

Surface Preparation

 N/A The substrate should be sanded with sandpaper grade suitable:
  • P240 to P400 for thermoplastics;
  • P100 to P180 for Phenolic composites.
It must then be cleaned with a lint free cloth and an alcohol based cleaner such as Isopropanol (plastic or phenolic substrate) or cetonic such as acetone or MEK (only for phenolic substrates).

All recommendations mentioned above are given for information.

Physical Properties

Theoretical Coverage for 50 Microns (µm) (2 Mils) Dry (Base and Hardener Undiluted)

 N/A 360 ft²/gal6 m²/L

Theoretical Coverage for 25 Microns (µm) (1 Mils) Dry (Base and Hardener Undiluted)

 N/A 720 ft²/gal12 m²/L

Dry Film Weight

 N/A 2 g/m²

Volatile Organic Compounds (VOC) Volume as Per International Organization for Standardization (ISO 11890-1)

 N/A 20 g/L0.17 lb/gal

Volatile Organic Compounds (VOC) Volume as Per American Society for Testing and Materials (ASTM D 3960)

 N/A 40 g/L0.33 lb/gal

Color

 N/A Cream Sandy Beige Stone Gray

Shelf Life/Storage

 N/A 12 months for the base and hardener stored between 5ºC and 35ºC (41ºF and 95ºF) in full and sealed original packaging.

Gloss Level

 N/A Matt ( lower than 10 GU at 60º)

Note

 N/A Flash point : > 100ºC (212ºF) base and > 60ºC (140ºF) hardener/catalyst
Gloss levels have been determined using glossmeter with an angle of incidence of 60º.
The theorical consumption value doesn’t take into account the transfer efficiency for spray application.

Instructions for Use

Instructions for Use (Spray Application)

 N/A Mixing ratio by weight - Base 100
Mixing ratio by volume - Base 15 V
Mixing ratio by weight - Hardener / Catalyst 5
Mixing ratio by volume - Hardener / Catalyst 1 V
Mixing ratio by weight - Water 5 to 15
Mixing ratio by volume - Water 1.1 V to 3.5 V

Mixing Procedure
Ideally, the unmixed products should be stored between 18ºC and 25ºC (64ºF and 77ºF) for 24 hours before use.
The base must be blended under low-speed agitation (200 RPM).
The mixture by weight is recommended.
Mix the base and hardener until the mixture is homogeneous.
Then add water and mix.

Note : it is recommended to sieve the diluted mixture using a 120-150 µm (4.7-6 mils) filter.

Induction Time - None

Spraying viscosity at 20ºC / 68ºF
Dilution rate by weight - 5-10%
Spraying viscosity at 20ºC / 68ºF (ISO 6) - 20s ± 5s

Pot Life - 3 hours for a 10% dilution.

Note
Viscosities mentioned above are corresponding to the recommended range of viscosity to ensure compliant application. The range of dilution must be used to adjust viscosity to reach the recommended one.
Water based paints show a thixotropic behavior. This implies that efflux time can vary according different parameters such as: type of mixing, mixing quantity, dilution, temperature, time between mixing and viscosity measurement.

Instructions for Use (Brush Application)

 N/A Mixing ratio by weight - Base 100
Mixing ratio by volume - Base 15 V
Mixing ratio by weight - Hardener / Catalyst 5
Mixing ratio by volume - Hardener / Catalyst 1 V
Mixing ratio by weight - Water 5 to 15
Mixing ratio by volume - Water 0 V to 1.1 V

Mixing Procedure
Ideally, unmixed products will be stored between 18ºC (64ºF) and 25ºC (77ºF) for 24 hours. The base should be blended again under low-speed agitation (200 RPM).
The base must be blended under low-speed agitation (200 RPM).
The mixture by weight is recommended.
Mix the base and hardener until the mixture is homogeneous. Then add up to 5% water.

Note : it is recommended to sieve the diluted mixture using a 120-150µm (4.7-5.9 mils) filter.

Induction Time - None

Pot Life - 45 minutes at 23ºC (73ºF) for an undiluted mixture

Application Recommendations

Temperature Condition

 N/A 15 to 35 ºC59 to 95 ºF

Relative Humidity Condition

 N/A 20 to 80 %

Equipment

 N/A Gravity compressed air gun Nozzle Nozzle 1.6 mm to 2.2 mm

Dry Film Thickness

 N/A 20 to 80 µm0.8 to 3.1 mil

Wet Film Thickness

 N/A 50 to 190 µm2 to 7.5 mil

Number of Coats with a Brush (Fine Hairs)

 N/A 1

Equipment Cleaning

 N/A Clean equipment with water, then with a suitable cleaning thinner.

Number of Coats

 N/A Spray gun: Follow requirements above and apply the product in crossed coats, pressure 3 bars (44 psi) +/- 0.5 (7 psi) dynamic to achieve the desired thickness (approximately 2 crossed coats for 80 µm or 3.1 mils dry). To get a thicker coat (>80 µm or 3.1 mils dry), let the first coat flash off 30 minutes before applying the second one (to obtain a matt appearance).

Note for Application Recommendations

 N/A Spray with dry, oil-free air.

Dry Time

Dust Free Dry Time at 23 Degree Celsius (ºC) (73 Degree Fahrenheit (ºF)) Temperature

 N/A 30 minutes

Dry to Sand Dry Time at 23 Degree Celsius (ºC) (73 Degree Fahrenheit (ºF)) Temperature

 N/A 3 hour

Dry to Sand Dry Time at 40 Degree Celsius (ºC) (104 Degree Fahrenheit (ºF)) Temperature

 N/A 1 hour

Dry to Sand Dry Time at 60 Degree Celsius (ºC) (140 Degree Fahrenheit (ºF)) Temperature

 N/A 30 minutes

Dry to Sand Dry Time at 80 Degree Celsius (ºC) (176 Degree Fahrenheit (ºF)) Temperature

 N/A 15 minutes

Fully Cured Dry Time at 23 Degree Celsius (ºC) (73 Degree Fahrenheit (ºF)) Temperature

 N/A 7 days

Fully Cured Dry Time at 40 Degree Celsius (ºC) (104 Degree Fahrenheit (ºF)) Temperature

 N/A 3 days

Fully Cured Dry Time at 60 Degree Celsius (ºC) (140 Degree Fahrenheit (ºF)) Temperature

 N/A 12 hour

Fully Cured Dry Time at 80 Degree Celsius (ºC) (176 Degree Fahrenheit (ºF)) Temperature

 N/A 4 hour

Note for Drying Times

 N/A Drying times have been determined using tests pieces of a thickness < 2mm for 65µm (2.6mils)
For 50 µm (2mils), flash off 30 minutes to 1 hour at room temperature before oven curing.

Defects and Corrections

Defects and Corrections

 N/A In the event of a defect, contact your Quality Department.

In event of a defect, the FR4-45 primer can be slightly sanded with paper grade 240 to 400, before applying the same product or a water-based top coat. The sanded top coat must be blown dried and cleaned with a lint free cloth dampened with isopropyl alcohol.

Packing

Packing

 N/A The base FR4-45 is available in 1 gallon, 1 kg and 5 kg.
The hardener FR4-45 is available in 0.25kg, 1 kg and 5 kg.
These products are not subject to IATA regulations for air transport.

Warranty

Warranty

 N/A We guarantee our products against hidden defaults over material and preparation. Our Responsibility is limited to the obligation of freely replacing the defective material without there being a claim for any compensation. The advice we give is based on our experience but it might not be absolutely right. Consequently this does not imply our responsibility in case of inefficiency. Furthermore our company cannot be responsible for any material or corporal damages caused due to a misuse or mishandling of our products. Any concession to these clauses, to be valid, must be an official document issued by our offices and signed by our direction.