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首页 > 公司新闻 > 美国科慕958-303涂层
公司新闻
美国科慕958-303涂层
2018-03-28IP属地 火星9
Description
Teflon S 958-303 and Teflon S 958-313 are onecoat,
solvent-based coatings specially formulated to
provide a tough, durable film for dry lubrication,
with excellent salt spray resistance. In addition,
Teflon S 958-313 has exceptionally good abrasion
resistance. They can be cured at temperatures as
low as 177°C (350°F). Refer to Table 1 for physical
property data.
FDA Status
Teflon S 958-303 and Teflon S 958-313 do not
comply with FDA regulations governing components
of coatings for direct food contact.
Table 1
Typical Properties
Teflon S Resin-Bonded Lubricant
Code 958-303 958-313
Color Black Black
Weight Solids, % 26.3 24.2
Volume Solids, % 19.4 18.0
Density, kg/L (lb/gal) 1.04 (8.7) 1.04 (8.6)
Coverage, m2/L (ft2/gal)* 7.8 (311) 7.2 (289)
Viscosity, cP 200–800 200–800
Maximum Use
Temperature**, °C (°F) 260 (500) 260 (500)
Note: These figures are averages and may vary.
* Theoretical coverage at 25 μm (1 mil) assuming 100%
efficiency.
** Abrasion resistance is reduced at temperatures above 205°C
(400°F).
Surface Preparation
For aluminum, stainless steel, and carbon steel:
1. Clean (vapor degrease, prebake, or other).
2. Lightly grit-blast with aluminum oxide.
For carbon steel, a zinc or manganese phosphate
conversion coating should be applied after grit-blast.
These products also adhere well to most hard anodized
aluminum surfaces.
Application
1. Bring coating to room temperature. Shake or
agitate to reincorporate any settled material.
2. Product is supplied ready-to-spray. If thinning
is desired, add a small amount of TN-8718
(n-methyl pyrrolidone NMP) with steady
mixing. If faster evaporation is needed use
TN-8595 or a 50:50 mixture of NMP:MIBK
with care. This thinner must be added slowly
with constant stirring.
3. Use conventional industrial spray equipment.
4. Recommended film thickness is 15–20 μm
(0.6–0.8 mil). The heavier film build will
improve salt spray corrosion resistance.
Baking
Note: All temperatures refer to metal temperature.
1. Flash or force dry for 5 min.
2. Recommended bake for 15 min at 343°C
(650°F).
These products can be cured at temperatures
as low as 177°C (350°F) by extending the cure
time. However, the toughness and durability of
the coating decreases as the cure temperature
is reduced below 343°C (650°F).
The color will change at the higher bakes to
a brown cast, but performance will not be
affected.
Fact Sheet
Teflon  S Coatings
958-303 and 958-313
DuPont? Teflon
Industrial Coatings
The DuPont Oval Logo, The miracles of science, and Teflon are
trademarks or registered trademarks of E.I. du Pont de Nemours and
Company.
Use of DuPont trademarks is subject to License Agreement and qualification.
Storage and Stability
Teflon S 958-303 is stable for at least 18 months
when stored at normal room temperature of
18–24°C (65–75°F).
Teflon S 958-313 is stable for at least 12 months
when stored at normal room temperature of
18–24°C (65–75°F).
Safety
Follow normal industrial safety practices for handling
and applying Teflon products. Industrial
experience has clearly shown Teflon materials can
be processed and used at elevated temperatures
without hazard providing adequate ventilation is
used. Ventilation should be available at baking temperatures
275°C (525°F) and above. Before using
Teflon S, read the Material Safety Data Sheet
(MSDS) and the detailed information in the “Guide
to the Safe Handling of Fluoropolymer Resins,”
latest edition, published by the Fluoro-polymers
Division of The Society of the Plastics Industry.
When grit-blasting Teflon finishes off aluminum
or magnesium surfaces, the possibility of explosion
exists if the fines are allowed to become heated.
Good housekeeping practices, keeping the residue
wet, and keeping the ventilation and dust collection
systems in good working order reduces this risk.
Table 2
Typical Test Data
Value Value
TeflonS 958-303 Teflon S 958-313
Test Method (Black) (Black)
Dry Film Thickness (DFT) Electromagnetic method ASTM D1400-87 25 μm (1 mil) 25 μm (1 mil)
Film Appearance Eye and power magnification microscope OK OK
Adhesion
Post Water Cross-
Hatch Adhesion Adhesive tape after boiling ASTM D335 OK(A) OK(A)
Impact ASTM D4145 OK(A) OK(A)
Abrasion
T