Sol-Gel Based Self-Healing Corrosion Protective Coatings
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Progress Sol-Gel Based Self- Healing Corrosion Protective Coatings Self-Healing Corrosion Protective Coatings Publications - M. AbdolahZadeh, S. van der Zwaag and S.J. Garcia, Routes to extrinsic and intrinsic self-healing anticorrosion sol gel coatings- A Review, submitted to Journal of Self-Healing Materials - M. Abolah Zadeh, S.J. Garcia, S. van der Zwaag, Sol-Gel Based Intrinsic Sel-Healing Polymers, in: 8th Coatings Science International, Noordwijk, The Netherlands, 2012, pp. 52. Composition Healing Evaluation A. Composition Effect B. Cross-Linking Density Effect PhD Candidate: Mina AbdolahZadeh Department: L&R Section: AMM Supervisor: S.J. Garcia Promoter: S. van der Zwaag Start date: 1-4-2011 Funding: IOP Cooperations: Akzo Nobel, Tata Steel Aerospace Engineering 1 st generation: Direct inhibitor addition Weakness: network instability 2 nd generation: Indirect inhibitor addition Weakness: limited healing events A. Our approach: Intrinsic healing sol-gel coatings (3 rd generation) B. Extrinsic healing approaches in Corrosion protective sol-gel coatings Epoxy – Silane Hybrid Epikote 828 + Ancamine 2500 + Si:Epoxy Resin weight ratio 1:1 BS APS Healing A 0 A t 500 µm 500 µm Healing CohesiveHealing Efficiency ( % ) = ( A 0 −A t A 0 ) × 100 Progress C. Kinetics D. Healing Mechanism Tetra-thiol Hot Stage Sample Cross-Linking Density of Organic Phase Cross-Linking Density of Inorganic Phase Excitation Light Elasti c Sca tt ered Light Inela s tic Scatt er e d Light Sample Hot Stage 0 10 20 30 40 50 60 0 20 40 60 80 100 C ohesive H ea ling E fficie n cy (% ) Tim e (M in.) S S S S Si Si O O O O O O C H 3 C H 3 CH 3 CH 3 C H 3 CH 3 0 20 40 60 80 100 120 0 20 40 60 80 100 C o h e sive H e aling E fficie ncy (% ) Tim e (M in.) 3BS:APS-Ex 2BS:APS-Ex 1BS:APS-Ex 0 5 10 15 20 25 0 20 40 60 80 100 C o h e sive H ealing E fficie n cy (% ) Tim e (M in.) 500 1000 1500 2500 3000 3500 4000 S-H C=O C-C C-S In te n s ity (a .u.) Ram an Shift (cm -1 ) T = 20 o C T = 30 o C T = 40 o C T = 50 o C T = 60 o C T = 70 o C T = 80 o C T = 90 o C S-S 0 10 20 30 40 50 60 0 20 40 60 80 100 C o h e sive H ealing E fficiency(% ) Tim e (M in.) T H = 50 o C T H = 70 o C T H = 90 o C 20 30 40 50 60 70 80 90 0,2 0,4 1,4 1,6 1,8 P eak A rea(T ) / P eak A rea in ternalsta nda rd (T) Tem p. ( o C) S-S C=O
description
Sol-Gel Based Self-Healing Corrosion Protective Coatings. A 0. PhD Candidate: Mina AbdolahZadeh Department : L&R Section: AMM Supervisor : S.J. Garcia Promoter: S . van der Zwaag Start date: 1-4-2011 Funding: IOP Cooperations : Akzo Nobel, Tata Steel. 500 µm. Healing. - PowerPoint PPT Presentation
Transcript of Sol-Gel Based Self-Healing Corrosion Protective Coatings
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sive H
ealin
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iency
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Time (Min.)
Progress
Sol-Gel Based Self-Healing Corrosion Protective
CoatingsSelf-Healing Corrosion Protective Coatings
Publications
- M. AbdolahZadeh, S. van der Zwaag and S.J. Garcia, Routes to extrinsic and intrinsic self-healing anticorrosion sol gel coatings- A Review, submitted to Journal of Self-Healing Materials
- M. Abolah Zadeh, S.J. Garcia, S. van der Zwaag, Sol-Gel Based Intrinsic Sel-Healing Polymers, in: 8th Coatings Science International, Noordwijk, The Netherlands, 2012, pp. 52.
Composition
Healing Evaluation
A. Composition Effect
B. Cross-Linking Density Effect
PhD Candidate: Mina AbdolahZadehDepartment: L&RSection: AMMSupervisor: S.J. Garcia Promoter: S. van der ZwaagStart date: 1-4-2011Funding: IOPCooperations: Akzo Nobel, Tata Steel
Aero
spac
e En
gine
erin
g
1st generation: Direct inhibitor additionWeakness: network instability
2nd generation: Indirect inhibitor additionWeakness: limited healing events
A.
Our approach:
Intrinsic healing sol-gel coatings(3rd generation)
B.
Extrinsic healing approaches in Corrosion protective sol-gel coatings
SS
SS Si
SiO
OO
O
O
OCH3
CH3
CH3
CH3
CH3
CH3
Epoxy – Silane Hybrid
Epikote 828 + Ancamine 2500 +
Si:Epoxy Resin weight ratio 1:1
BS
APS
Healing
A0
At
500 µm
500 µm
Healing
Cohesive Healing Efficiency (% )=( A0− A tA0 )×100
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0
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Cohe
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ealin
g Effic
iency
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Time (Min.)
3BS:APS-Ex 2BS:APS-Ex 1BS:APS-Ex
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100
Cohe
sive H
ealin
g Effic
iency
(%)
Time (Min.)
Progress
C. Kinetics
D. Healing Mechanism
Tetra-thiol
500 1000 1500 2500 3000 3500 4000
S-HC=OC-CC-S
Inten
sity (
a.u.)
Raman Shift (cm-1)
T = 20 oC T = 30 oC T = 40 oC T = 50 oC T = 60 oC T = 70 oC T = 80 oC T = 90 oC
S-S
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Cohe
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g Effic
iency
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Time (Min.)
TH= 50 oC
TH= 70 oC
TH= 90 oC
Hot Stage
Sample
Cross-Linking Density of Organic Phase
Cross-Linking Density of Inorganic Phase
20 30 40 50 60 70 80 900,2
0,4
1,4
1,6
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Peak
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a(T)
/ Pea
k Are
a inter
nal s
tanda
rd(T
)
Temp. (oC)
S-S C=O
Excitation Light
Elastic Scattered Lig
ht
Inelastic Scattered Lig
ht
Sample
Hot Stage
