About heat-resistant epoxy powder coatings

Text: unethicalfat, or forforwa filler, flexible consisting performance ratio total resistance (200 to 600 degrees C) powder .
foreboding
powder powder resistance period receiving 200 degrees Celsius or higher high temperature,film non- color, unsastwable , ability retention this physicalperformancepowder.
deskpowder fee-resistantperformance ratiohigh, Tajimahigh, early outerand deskperformance unsustacable, solidification temperature high, and requiredobtained period period high temperature film equivalent trouble
fat-main body-resistant performance comparable desk fat difference, however-like performance ratio whole through reformability Japanese subscription right solidification and filler, the same possible good resistance . By the way, - powder and - obtained.
1 powder-resistant performance requirements
1.1 resistance
resistance most important performance finger , insignity products indefinite period stay one high temperature under use, cause, resistance or period Japanese short-term Two.
root elephant and directional performance demand, natural reformation fat, solidificationwa filler, talent aesthetic purpose.
1.2 performance
comprehensive early Japanese-style performance. Yui Charged received constant limit system for , tsuji desk performance ratio general powder charge-like required descending low;
1.3 Antiseptic performance (comprehensive chemical resistance performance)
fat preservative performance ratio preferred, causal, powder -charge full- directional requirement.
1.4
comprehensive flatness, light , , etc. performance. It is said that it is an elephant place district where it is not possible to use the . A skin with in general.
, , the great capital of , and are completely more possible. It is to compare color, especially shallow color, and one point point point . It possible to understand the of this joining , etc. to prevent .
1.5 qualitative
Yu's unreleased high temperature , fat Tg high, causal qualitative this . 2 powder powder and
2.1 fat
for general A fat. -resistant fat:
(1)
old point 65 degrees C, 201,Tg-224 degrees C; good. :
(2)
point 110 to 115 degrees C, the same amount 240 to 275,Tg . Low melt viscosity, force .
:
(3) [YX-4020H (Japanese oiling sier / C)] :
(4) 4-4' - base water sweetening (TGDM) [ELM434 (Sumitomo Chemical Japan)] the same amount 117 to 134, the highest Tg .
:
2.2 Greasy reforming
2.2.1 Desk fat reforming
reformability fat, ready-made lowgreasive inner force, fat softness resistance to high temperature resistance.
active end group (Si-OH, - NH2, group, etc.) given greasive group, group anti, produced fitting stage high-height.
example solution-given active desk -like solution-subscribed three- bottle, subscribed Sanot , temperature transmission
mixed a fat desk based the yokko , and the purpose was changed. Example:
powder no 500 to 700 degrees Celsius high temperature non-peeling.
2.2.2 () compound
: - powder powder, powder distribution and performance:
fruit compound 30
fat 70
-type -type 50
nikko 2
good
initial shear adhesion / (kg-cm-2) 150
80

2.3 rice filler reforming fat
for original distributed co-ordinant U.S. SiO2 fat combination material, fat good action; high performance.
U.S. SiO2 fat method yes lower general dried U.S. SiO 2 in the solution, super vocal wave ri 30 min.
solution oil desolation solution temperature of 130 degrees C 1 h, cooling is possible immediately. U.S. de-soil reforming, fat-resistant resistance, and -resistant combustible performance.
2.4 solidification
solidification is large shadow . Generally, it to resistance solidification acid general.
ratio- solidification or less scrupulous:
(1) uniform four-scale acid (PMDA) sul-point 280 degrees C,-shaped temperature 290 degrees C.
(2) 4 (BTDA) 227 degrees C, temperature of 280 degrees Celsius.
(3)
: : R1-, R2 Oto.
chemical name : Otobi -2- one-scale scapic acid (trade name Curezo Isle 2MZ-CNS, Japan Shikoku Kasei ).
(4) fat (FB fat)
acid, sand, twin A Wago aqueous solution raw material, under NaOH . Type :
Commercial F series solidification available fat resistance 300 to 400 degrees Celsius high temperature, and .
2.5 Filler
Powder Powder Has Performance Large action, for Filler, Publication Powder performance.
2.5.1
For desks for most. color are available for (Sheperd Color ). powder-resistant easy color, under high ; fat .
2.5.2 Filler
General Desk Filler Preferred Resistance, For Ash powder ( acid ) Japanese mother powder. Two can use Germany, and use of a constant proportional formulation.
Type : Ash Powder Nyad M400 (Nyco Corporation), Gold Mother Surorite 325 HK
, -resistant, -high hardness, polishing resistance, chemical qualitative Japanese weather resistance, dose 5% to 30%.
2.5.3 Low-
low-to-powder 10 .mu.m;
general ,specific weight 0.4, Rumikoku PQ Koji students, Q-Cell 7040S, etc. Usage 10% to 50%. a small amount of that can be joined is . Low- powdery available acid (BaZr2F10) alternative.
3 powder powder example
(2) bias - solidification powder distribution and performance under:
4
high-temperature combined articles posist, required out of each direction performance Tono sign combination required powder fee, presence constant trouble .
for fat for the same solidificationwawa filler, more controlled and undeterminable high temperature demand (200 to 600 degrees C) powder .
powder -use house products: Nyo furnace, warm desk, Daiko rate lamp , and desk -like high temperature part, Nyo drainage pipe, high temperature furnace, petrochemical equipment, desk, , Uwo
powder and are available, and are covered in the direction. For , oil or combustible combustible , combustible powder powder.