Coating Powder NEOFLONTM - Daikin Industries Fluoroplastics
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EG-63h
Product Information
Daikin Industries
Fluoroplastics
NEOFLON TM
Coating Powder
Introduction
NEOFLON Coating Powder is a high performance material
made from fluoropolymer resin.
Two kinds of NEOFLON Coating Powders, NEOFLON FEP,
and PFA Coating Powder, are available.
NEOFLON FEP Coating Powder is a fine powder made of
tetrafluoroethylene and hexafluoropropylene copolymer and
NEOFLON PFA Coating Powder is a fine powder made of
tetrafluoroethylene and perfluoroalkylvinylether copolymer.
NEOFLON FEP and PFA Coating Powder are low in melt
viscosity and excellent in melt fluidity which can give a
coating free of pinholes.
NEOFLON FEP and PFA are ideal for use as corrosion
resistant linings because of their excellent thermal and
chemical resistance properties.
TM: DAIKIN INDUSTRIES trademark for its Fluoroplastics1. Features of
NEOFLON Coating
Powder
1-1 Processability 1) A thick coat can be obtained for lining purposes
When the appropriate processing conditions are selected, a coating
thickness can be obtained with NEOFLON Coating Powder.
The advantages of this are reduced processing time, and a superior
capability for use in heavy corrosion resistance application.
See table 1 for the thickness which can be obtained:
Table 1
FEP (NC) PFA (AC)
Film thickness per
application 300 ~ 500 300
For electrostatic (µm) Max.
coating Film thickness by multi-
applications Approx. 2,000 Approx. 1,000
(µm) Max.
Film thickness per
For Roto moulding application 500 ~ 5,000 500 ~ 5,000
(µm)
2) A wide range of processing conditions is possible
The temperature range for processing of NEOFLON Coating Powder is
320 ~ 360°C.
This wide range greatly facilitates processing.
3) Processing methods are extremely simple
The following general powdercoating methods are applicable.
z Electrostatic spray coating
z Spray coating
z Rotational molding
z Rotational lining
1-2 Coating film 1) Excellent resistance to stress cracking
properties 2) Excellent resistance to chemicals
3) Excellent thermal resistance
4) Excellent anti-stick property
5) Excellent electric property, weather resistance and incombustibility.
22. Grades of NEOFLON Coating Powder are available in the following grades depending
on processing method.
NEOFLON Coating
Powder
Table 2 NEOFLON FEP Coating Powder Grades
Product Appearance Feature Color Processing Processable Application
No. methods thickness
NC- White High purity clear Spray coating. 100 ~ Topcoat for
1500 powder product Electrostatic- 300 µm corrosion-
coating resistant lining
Anti-stic coating
NC- Graynish Wide black Spray coating. 100 ~ Undercoat for
1519 white powder processing Electrostatic- 2,000 µm corrosion-
window. coating. High build resistant lining
type
NC- Graynish Excellent black Spray coating. 100 ~ Under and top
1539 white powder corrosion Electrostatic- 2,000 µm coat for
resistance coating. High build corrosion-
type resistant lining
NC- White High purity clear Roto moulding 500 ~ Container
1810 powder product Roto lining. 5000 µm Corrosion-
resistant lining
NCX-1 White Thin build clear Electrostatic- 30 ~ For slight
powder type coating. 80 µm Corrosion-
resistant lining
Table 3 NEOFLON PFA Coating Powder Grades
Product Appearance Feature Color Processing Processable Application
No. methods thickness
ACX- White Thin build clear Electrostatic-30 ~ IH Rice cooker, OA
31 powder type coating 80 µm rool. For slight
corrosion-resist
lining
AC- White Good clear Spray 100 ~ Topcoat for
5600 powder * leveling coating 300 µm corrosion- resistant
property Electrostatic- lining and anti-stick
coating coating
AC- Gray powder High build black Spray 100 ~ Under, top coat for
5539 type coating 1,000 µm corrosion- resistant
Electrostatic- lining
coating
AC- White High purity clear Roto 500 ~ Container
5820 powder * product moulding 5,000 µm Corrosion-
Roto lining resistant lining
* AC-5600, 5820, are pure PFA
PFA thin-coat types and ETFE Coating powder are also available. Please consult your
dealer of DAIKIN INDUSTRIES.
23. NEOFLON Coating
Powder Properties
3-1 Powder Properties Table 4 Powder
Items Measuring method Unit NC NC AC AC
(for spray) (for roto)
Apparent JIS K6891 g/ml 0.55 ± 0.10 0.90 ± 0.15 0.55 ± 0.10 0.90 ± 0.15
density
Particle (Laser diffraction) µm 55 ± 35 210 ± 60 45 ± 25 200 ± 50
size
Melting NC:ASTM D2116 °C 265 ∼ 275 255 ~ 275 303 ~ 313 303 ∼ 313
point AC:ASTM D3307
Melt NC:ASTM D2116 g/10 min 0.8 ∼ 1.5 4~8 1~7 5~7
index AC:ASTM D3307
(1) NC-1500, 1519, 1539 (2) AC-5600, 5539 (3) AC-5820
3-2 Coating Properties Table 5 Coating
Items Measuring method Unit NC (FEP) AC (PFA)
Specific gravity ASTM D792 g/ml 2.12 ~ 2.17 2.12 ~ 2.17
Hardness Durometer shore D55 ~ D65 D60
Taber abrasion (Against CS-17) mg/1000r 3 ~ 16 5 ~ 15
Coefficient (Bowden Leben 0.05 ~ 0.08 0.05 ~ 0.08
friction (Static) method)
Contact angle
Water Goniometer (Degree) 105 102 ~ 106
Hexadecane 50 65
Adhesive kN/m 4~6 4~6
strength *
Tensile strength JIS K6888 MPa 26.5 ~ 32.4 19.6 ~ 31.4
Elongation JIS K6888 % 310 ~ 360 250 ~ 350
* method: Peel Test
Test piece 1) steel substrate are roughened with 80 ~ 120 mesh sand
2) applied two coat primer EK-1083G,EK-1883GB
3) applied NEOFLON Coating Powder into 500 µm thickness.
33-3 Chemical resistance 1) Adsorption of chemicals
of coating Figure 1 and Table 6 show the results of chemical adsorption when
fluoropolymer coatings are immersed in chemicals for the condition
indicated.
Suitability of the coatings can be determined to a certain degree by the
adsorption curves shown in Figure 1.
As is shown in Table 6, the adsorption volume of NEOFLON is extremely
low in comparison to other fluoropolymer coatings.
Immersion conditions: 50 days at 95°C
Chemicals: 98% sulfuric acid,
36% hydrochloric acid,
60% nitric acid,
50% sodium hydrooxide,
28% aqueous ammonia, toluene, diethylamine, chloroform,
acetone
Figure 1 Chemical Adsorption Curves
Suitability
A or below: Excellent
A ~ B: Sufficient for use
B ~ C: Applicable depending
on conditions
X, Y: Not applicable
Table 6 Chemical Resistance Comparsion
A or below A~B B~C X, Y
NEOFLON All chemicals Chloroform
FEP except
and PFA chloroform
NEOFLON Sulfuric acid, Ammonia Nitric acid,
ETFE hydrochloric acid, chloride, acetone, chloroform
sodium hydro toluene,
oxide diethylamine
NEOFLON Hydrochloric acid Chloroform All chemicals
VDF except the ones
described on the
left
NEOFLON All chemicals Toluene Chloroform
CTFE except toluene
and chloroform
ECTFE Sulfuric acid, Acetone, Nitric acid,
hydrochloric acid, toluene, aqueos
sodium hydro diethylamine ammonia,
oxide chloroform
42) NEOFLON Coating Chemical Resistance
The chemical resistant properties of NEOFLON Coating are listed below:
Table 7
NC-1539
Chemical NC-1519 *1
AC-5539
Sulfuric acid (98%) Excel Excel Excel
Hydrochloric acid (36%) Good Excel Excel
Nitric acid (60%) Good Excel or Good Excel
Hydrofluoric acid (40%) Excel Excel Excel
Chlorosulfonic acid Excel Excel Excel
Chromic acid (40%) Excel Excel Excel
Perchloric acid Excel Excel Excel
Formic acid Excel Excel Excel
Citric acid (40%) Excel Excel Excel
Glacial acetic acid Excel Excel Excel
Trichloroacetic acid Excel Excel Excel
Chlorine water Poor Good Excel
Soda hypochlorite Excel Excel Excel
Potassium permanganate (20%) Excel Excel Excel
Aluminum chloride (25%) Excel Excel Excel
Ammonia chloride (25%) Excel Excel Excel
Aqueous ammonia (28%) Excel Excel Excel
Sodium hydro oxide (50%) Excel Excel Excel
Benzene Excel Excel Excel
Toluene Excel Excel Excel
n-butylamine Excel Excel Excel
Diethylamine Excel Excel Excel
Morpholine Excel Excel Excel
Chloroform Good Good Good
Trichloroethylene Good Good Good
Acetone Excel Excel Excel
Methyl ethyl ketone Excel Excel Excel
Ethyl acetate Excel Excel Excel
Ethyl cellosolve Excel Excel Excel
Ethyl carbitol Excel Excel Excel
Ethylene dichloride Excel Excel Excel
Ethylene oxide Excel Excel Excel
Ethyl alcohol Excel Excel Excel
n-hexane Excel Excel Excel
After 50 days at 95°C (Film thickness: 1 mm)
Explanation of symbols
Excel: Not affected at all
Good: Affected more or less, but suitable
Fair: Care should be needed, but suitable
Poor: Unsuitable
*1: NC-1539 and AC-5539 are used for middle layer NC-1500 is overlaid on NC-
1539 and AC-5600 is overlaid AC-5539 in 200 ~ 300 µm thickness.
Running temperature or Testing temperature:
In case of NC family in acids and alkalis, it is under 150°C, and in case of AC
family, it is normally under 180°C, but it will be lowered by containing organic
solvents. Regarding using temperature, it is recommended to test actually by use
of test pieces and chemicals.
54. Processing of
NEOFLON Coating
Powder
4-1 Coating NEOFLON Coating Powder can be apply by spraying, electrostatic,
fluidized bed, Roto molding methods, etc.
1) Processing steps of NEOFLON Coating Powder (For spraying)
Machine corners to a radius of 5 to 10 mm and
Base material eliminate pin holes from the welded part.
Degrease and baking Remove oil and grease from the surface of a base
material.
Roughening the surface of a base material by sand
Roughening surface blasting or grid shot.
First layer: EK-1083GB (needed only for steel and
Under-coating with under-coating paint stainless steel materials)
Second layer: EK-1883GB
Drying First layer: 80 ~ 90 °C × 10 min. or more
Second layer: 80 ~ 90 °C × 10 min. or more
Sintering First layer: 380 °C × 10 min.
Second layer: 380 °C × 30 min.
Cooling Under 40 °C
(Coating condition for EK-1883GB)
NEOFLON Coating Powder (repeat coating) Electrostatic coating
Sintering
Cooling Water cooled, air cooled, or furnace cooling is
possible.
Product
6Table 8 Appropriate Sintering Conditions for Each Grade
Middle sintering 340 ~ 350°C 340 ~ 360°C 340 ~ 360°C
× 15 ~ 30 min × 15 ~ 30 min × 15 ~ 30 min
Final sintering 320 ~ 340°C 320 ~ 350°C 320 ~ 360°C
×1~3h ×1~3h ×1~3h
Applicable grade NC-1500 NC-1539 NC-1519
AC-5600 AC-5539
Clear type : 50 ~ 100 µm/time
Stabilizer contained : 100 ~ 300 µm/time
Electrostatic coating equipment
72) Processing step of NEOFLON Coating Powder (For Roto molding)
Metal mould
Washing and grinding
In case of lining, apply under-coating paint
Applying mold release agent
instead of release agent.
Charging NEOFLON PFA Coating
Powder, AC-5820
Revolving metal mold
Sintering AC-5820, 320 ~ 350°C × 30 ~ 120 min
Cooling
Product
84-2 Coating examples 1) Electrostatic coating
The higher the applied voltage the stronger the bonding force of powder
coating to the base material becomes, however electrostatic repulsion
occurs easily. It is, therefore, not advisable to increace the applied
voltage.
A voltage of 20 to 50 kV is recommended for electrostatic coating of
NEOFLON Coating Powder.
The surface temperature of the base material greatly affects the coating.
If the surface temperature for FEP is lower than 200°C and for PFA is
lower than 250°C, the volume resistivity increases and an electric charge
is accumulated, with the result that the powder will not easily adhere, due
to electrostatic repulsion. This means that the coating cannot be
thickened. Note that electrostatic repulsion may cause pin holes and
foaming.
The cooling speed of the preheated base material differs with the heat
volume of the base material (thickness of the base material if it is made
of the same material) and the surface area. And the processing time can
be obtained approximated by the following formula.
Formula
c × γ × v × (t1 − t 2 ) t
τ=K × Ln 1
F t2
Where;
τ = Processing time(minutes)
k = Proportional constant
t1 = Initial temperature of base material
c = Specific heat J/kg y deg
v = Volume of base material m3
t2 = Coating temperature limit
γ = Specific gravity kg/m3
F = Total surface area m2(including pipe internal surface)
For steel
0.025 × 870 × v × (t1 − t 2 ) t
τ= × Ln 1
F t2
Figure 2
92) Fluidized bed coating
A preheated base material is immersed in the powder fluidized bed so
the powder will melt and adhere to the base material, and then sintered
intermediately.
The desired film thickness can be obtained by repeating this process.
Thickness uniformity is obtained during the final sintering.
The coating thickness is greatly affected by the heat volume of the base
material.
Coating thickness and number of
immersions
Processing conditions
Article preheating: 30 min at 380°C
Immersion time: 1 min./dip
Intermediate sintering: 15 min. at 360°C
Final sintering: 120 min. at 350°C
3) Other coating methods
Apipes internal surface can be coated by Roto lining method. For each
processing method, the process from coating to sintering is performed in
the general processing sequence.
4) Repair
Defective parts of the coated film can be repaired by a hot-air generator
for welding resins (capable of heating to higher than 350°C) to melt the
film or weld it by using a welding rod of NEOFLON FEP or PEA. Wider
defective parts can also be repaired by NEOFLON Film.Note, the
strength of repaired parts is, in general, lowered.
For a black welding rod is needed spray NEOFLON NC-1539 (FEP) or
AC-5539 (PFA) coating powder on an aluminium plate to a thickness of 1
~ 2mm thick and sinter it for an hour at 350°C ~ 360°C to make a film
which is to be cut into small pieces to make welding rods. If the film
cannot be easily separated from the aluminium plate, dip it in hot water
for 1 ~ 2 hours or leave it for 2 ~ 3 days, after which it can be easily
peeled off. While welding, check to be sure that there is no water.
105. Coating test (Pin Check coating for pin holes with a high direct current voltage (described in
JIS K6766). The test is performed with break-down voltage of resins
hole test) (19kV/100m) and with normal voltage from 5kV to 7kV.
6. Applications Examples of the main uses of NEOFLON Coating Powder are listed
below.
Applied fields Application examples Utilized features
Chemical Pumps, Valves, Tower tanks, High corrosion resistance,
industries Piping and its related parts, High corrosion resistance,
Sealing and its related parts, High corrosion resistance and
Heat resistance,
Heat exchangers High corrosion resistance, High
corrosion resistance, Antistick
property, Heat resistance
Electrochemistry Electric coating and its related High corrosion resistance,
parts (Jigs and tanks) Anti-stick property,
Metal plating and its related parts Anti-stick property
(Jigs and tanks)
Electrolytic cells High corrosion resistance
Others Metal molds Anti-stick property
117. Application
examples
7-1 Chemical industries
Photo-1 Photo-2
Photo-1: Photo-2:
Without lining, after one month NEOFLON FEP powder lining 1mm
thick
In case of this plant without lining, Nothing abnormal is found after
the material is SS-41 and wall one year.
thickness is 60mm, a large
perforated pitting corrosion was
observed.
• Running conditions
Chemicals:
HF 60%, H2SO4 30%, H2O 10%, and CaSO4 Slurries
Temperature:
150°C
Photo-3 Photo-4 Photo-5
Photo-3: Photo-4: Photo-5:
Pump shaft before use The same pump shaft after three The same shaft with NEOFLON
Material SUS-306.....without lining month use FEP powder lining after one year
.....Corrosion and wear can be use
observed. .....No change is observed.
12Photo-6
• Running conditions
Chemicals:
HF 60%, H2SO4 30%, 10% and CaSO4 Slurries
Temperature:
100°C
• Parts of diaphragm pumps
(NEOFLON FEP powder lining)
Use:
Corrosion resistance (Products related food)
Running conditions:
Liquid chemical:
Citric acid 85%
Temperature:
95°C
Comparison with SUS 316
NEOFLON FEP coating powder lining SUS316
No change after 2 years operation Holes opened due to corrosion and erosion after
3 months
Note: *NEOFLON FEP lining films conform to Ministry of Health and Welfare Notice 434.
(in Japan)
13• Screw feeder and its accessories
Use:
Corrosion resistance and anti-stick property
Running conditions:
Chemicals:
NaH2PO4, CH3COOH, H2O Slurries
Temzperature:
20 ~ 30°C
Photo-7 Photo-8
• Heat exchanger
(Plate heater) (NEOFLON FEP powder lining)
Use:
Corrosion resistance, anti-stick property
Used not only for corrosion resistance but also for easy removal of
scale
Running conditions:
Liquid chemical:
Strong alkali
Temperature:
100°C
(Steam heating, suction temperature 130°C)
Comparison example:
NEOFLON FEP powder lining
Nothing abnormal is observed after three year use.
NEOFLON PCTFE paint lining
Small cracks took place in many places after three month use
Photo-9
147-2 Electrochemistry • Racks for plating
Use:
Corrosion resistance;
Antiweatherability was observed against any types of metal plating
liquids.
Consequently, there is no need to change racks depending on treating
order.
Compared with PVC, chemical liquid to be brought out is negligible
because of its excellent water repellency.
Using examples:
Photo-10 Photo-11
Kinds of metal plating Zn plating Ag plating
Chemical liquid NaCN AgCN
→NaOH → HNO3
NaOH → NaOH → HNO3 KCN
ZnO
Treating temperature (°C) 30 80 ~ 90 30 80 ~ 90
Photo-10 Photo-11
• Electroless plating
Use:
Prevention of anchoring and corrosion
resistance of the nickel
precipitate on the wall face.
Running condition:
Bath temperature:
80°C ~ 90°C
Photo-12
157-3 Others
Processing method for rollers
Processing method NEOFLON powder lining NEOFLON thermal
contraction tubes
Accuracy *1 2/100 mm 10/100 mm
Anti-crack property *2 Excellent Good
Skiding between roll and None Exist
lining film in high temp.
Corrosion resistance
Roller surface *3 Excellent Excellent
Roller side Excellent Faulty
Adhesion *2 Excellent None
Processability Improcessable on the site Processable on the site
*1: Powder lining products can be finished by griding.
*2: In order to promote adhesion of powder lining to the roller, provide primer coat.
*3: Powder lining can cover the sides and the shaft, but thermal contraction tube cannot.
168. Cautions on •Fluoroplastics
Although Fluoroplastics present no hazard under normal processing
handling conditions, these safe handling points should be followed:
• WARNING: VAPORS HARMFUL IF INHALED.
The work area should be adequately ventilated at all times because HF,
COF2 begin to be produced above the respective approximate
temperature: (PTFE·PFA=260°C, FEP=205°C). The volume of vapors
increases above the respective approximate temperature:
(PTFE·PFA=380°C, FEP=360°C). If a fluoroplastic is incinerated, the
acidic gases must be removed by alkaline scrubbing techniques.
• Personnel should be cautioned against inhaling the fumes liberated during
processing and provided with suitable protective equipment.
• Do not smoke in the work areas as harmful vapors and gases can be
produced if a Fluoroplastic becomes transferred onto tobacco.
• Avoid breathing dust and contact with eyes.
• Wash hands and face after handling.
• Waste generated during processing should be treated by waste treatment
specialists and disposed of in accordance with federal, state and local
waste disposal regulations.
9. Packaging unit NC Series 10kg
AC Series 10kg
17z DAIKIN INDUSTRIES,LTD. and DAIKIN AMERICA.INC. have obtained the ISO
14001(*1) certification which is an International Standard concerning the
environmental management system. DAIKINconcerning the environmental
management system. DAIKIN INDUSTRIES,LTD has obtained the ISO 9001(*2)
and DAIKIN AMERICA.INC has obtained the ISO 9002 (*3) .
*1. ISO 14001 is a standard established by the ISO (International Organization for
Standardization) which applies to environmental preservation activities. Activities,
products and services of our fluorochemicals plant have been certified as being
environmentally sound by an internationally recognized certification body.
*2. ISO 9001-2000 is a certification system for quality control established by the ISO
which certifies our quality control system concerning our products .
*3. ISO 9002-1994 is a plant certification system for quality control established by
the ISO which certifies our quality control system concerning manufacture and
inspection of the products manufactured at our plant (division).
IMPORTANT NOTICE: The information contained herein is based on technical
data and tests we believe to be reliable and is intended for use by persons having
technical knowledge and skill, solely at their own discretion and risk. Since
conditions of use are outside of our control, we assume no responsibility for results
obtained or damages incurred through application of the data given; and the
publication of the information herein shall not be understood as permission or
recommendation for the use of our fluorocarbon compounds in violation of any
patent or otherwise. We only warrant that the product conforms to description and
specification, and our only obligation shall be to replace goods shown to be
defective or refund the original purchase price thereof.
MEDICAL USE: This product is not specifically designed or manufactured for
use in implantable medical and/or dental devices. We have not tested it for such
application and will only sell it for such use pursuant to contract containing specific
terms and conditions required by us.
DAIKIN INDUSTRIES, LTD. DAIKIN AMERICA, INC. DAIKIN CHEMICAL EUROPE GmbH
Umeda Center Bldg., 20 Olympic Drive Immermannstr. 65D
2-4-12, Nakazaki-Nisi, Kitaku, Orangeburg, NY 10962, USA, 40210 Dusseldorf, Germany
Osaka 530-8323, Japan. Phone: +1-845-365-9500 Phone: +49-211-179225-0
Phone: +81-6-6374-9312 Tool-Free: +1-800-365-9570 Facsimile: +49-211-1640732
Facsimile: +81-6-6373-4389 Facsimile: +1-845-365-9598
URL:www.daikin.cc
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