silicone surfactants reactivity analysis - concentrol
TRANSCRIPT
UTECHNorthAmerica2016
RIGID FOAM ADDITIVES
Effect of the silicone surfactant reactivity on the properties of rigid polyurethane foams
JosepNadalTechnicalManagerforPUAdditives
1.- INTRODUCTION
2.- EXPERIMENTALS AND RESULTS
3.- CONCLUSIONS
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1.- INTRODUCTION
2.- EXPERIMENTALS AND RESULTS
3.- CONCLUSIONS
UTECHNorthAmerica2016
Rigidpolyurethane (PU)foamisoneofthebestthermalinsulationmaterial
Applicationsarewide:
- Appliances:Domesticrefrigeratorsandfreezers,hotwatertanks- Building industry:Sandwichpanels(wallsandroofing panels), insulatingboards,
slabstock or2Ksprayinplace.- Industrial:tanksandcontainersinsulation, pipelines
Besidesthermalinsulationperformance, otherrequirementshavetobetakenintoaccount:
- flammabilityperformance- adhesion todifferent facingmaterials- dimensional stability
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1.- INTRODUCTION
Siliconesurfactantsplayasubstantialroleonthefoamproperties
Siliconesurfactantsaresilicone-polyethercopolymers
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1.- INTRODUCTION
EO
PO
PDMS
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reactivity(R)ofsomesurfactants
1.- INTRODUCTION
Siliconesurfactantsaresilicone-polyethercopolymers
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Non-capped: -OH
Capped: -OCH3
Capped: -OCOCH3
1.- INTRODUCTION
Siliconesurfactantsaresilicone-polyethercopolymers
reactivity(R)ofsomesurfactants
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CAPPED OHnumber(mgKOH/g)
ISOREACTIVITY
COST HYDROLITICSTABILITY
-OH varied ü $ ü
-OCH3 ü <10 $ $ $ ü
-OCOCH3 ü <10 $ $ $
CAPPED OHnumber(mgKOH/g)
APPLICATIONS
-OH varied General purpose: lamination,appliances,spray,block,highdensity,etc.
-OCH3 ü <10 Specific:OCF, spray,lamination
-OCOCH3 ü <10 Veryspecific: lamination
1.- INTRODUCTION
Isreactivityimportant(COST,ISOREACTIVITY,etc.)?
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CAPPED OHnumber(mgKOH/g)
APPLICATIONS
-OH varied General purpose: lamination,appliances,spray,block,highdensity,etc.
-OCH3 ü <10 Specific:OCF, spray,lamination
-OCOCH3 ü <10 Veryspecific: lamination
1.- INTRODUCTION
HASTHEREACTIVITYOFSILICONESURFACTANTSAMAJORIMPACTINA
PUR/PIRFORMULATIONFORLAMINATION?
1.- INTRODUCTION
2.- EXPERIMENTALS AND RESULTS
3.- CONCLUSIONS
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ü In the first part we will present new surfactants where the only difference is thecapping group (synthesis and characterization).
Polarity (cloud point analysis)Infrared spectraMolecular Weight by SEC1H-NMR
ü In the second part, physical analysis of the foams prepared with the previouslysynthesized surfactants will be shown. The aim is to establish trends which link thechemical structure with the physical parameters analyzed.
Lambda valuesFire propertiesDimensional stability measurementsGeneral appearance
2.- EXPERIMENTALSANDRESULTS
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2.- EXPERIMENTALSANDRESULTS
SYNTHESISand
CHARACTERIZATIONof
NEW SURFACTANTS
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POLYSILOXANE POLYETHER(EO %)MW RAMIFICATION VERYHIGHEO HIGHEO MEDIUMEO
LOWMEDIUM
HIGH
MEDIUMLOW
MEDIUM
HIGH LOW
2.- EXPERIMENTALSANDRESULTS
TABLEOFCOMPOSITIONS
Usualstructuresofsurfactantsforlamination
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POLYSILOXANE POLYETHER(EO %)MW RAMIFICATION VERYHIGHEO HIGHEO MEDIUMEO
LOWMEDIUM
U-110U-111U-112
HIGHU-120U-121U-122
MEDIUMLOW
U-210U-211U-212
MEDIUMU-220U-221U-222
HIGH LOWU-310U-311U-312
OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
TABLEOFCOMPOSITIONS(15EXPERIMENTALNEWSURFACTANTS)
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SURFACTANT CLOUDPOINT(4%water)
U-110 158ºF(70ºC)
U-111 100ºF(38ºC)
U-112 129ºF(54ºC)
U-120 187ºF (86ºC)
U-121 124ºF (51ºC)
U-122 145ºF(63ºC)
HIGH EO%
SURFACTANT CLOUDPOINT(4%water)
U-210 104ºF(40ºC)
U-211 77ºF(25ºC)
U-212 88ºF(31ºC)
U-220 140ºF(60ºC)
U-221 127ºF(53ºC)
U-222 114ºF(46ºC)
MEDIUMEO%
SURFACTANT CLOUDPOINT(4%water)
U-310 100ºF(38ºC)
U-311 100ºF(38ºC)
U-312 97ºF(36ºC)
LOWEO%
2.- EXPERIMENTALSANDRESULTS
SURFACTANTANALYSIS (POLARITY– CLOUDPOINT)
OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
0
10
20
30
40
50
60
70
80
90
100
CP(ºC)
EO %
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2.- EXPERIMENTALSANDRESULTS
- +
REMARKS
1)CAPPEDsurfactantsshowlowerCP
2)Higheristheramification,higheristheCP
3)NomeasuredrelationbetweensurfactantMWandCP
SURFACTANTANALYSIS (POLARITY– CLOUDPOINT)
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OHhydroxyl
OCH3 methoxy
OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
SURFACTANTANALYSIS (INFRAREDSPECTROSCOPY)
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2.- EXPERIMENTALSANDRESULTS
OHhydroxyl
OCH3 methoxy
OCOCH3 acetoxy
SURFACTANTANALYSIS (INFRAREDSPECTROSCOPY)
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2.- EXPERIMENTALSANDRESULTS
OHhydroxyl
OCH3 methoxy
OCOCH3 acetoxy
SURFACTANTANALYSIS (INFRAREDSPECTROSCOPY)
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2.- EXPERIMENTALSANDRESULTS
SURFACTANTANALYSIS (MWMEASUREMENTS– SEC)
Low MW
MediumMW
HighMW
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2.- EXPERIMENTALSANDRESULTS
SURFACTANTANALYSIS
(1H-NMR)
OCH3 methoxy
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2.- EXPERIMENTALSANDRESULTS
OCOCH3 acetoxy
SURFACTANTANALYSIS
(1H-NMR)
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ü first part summary.
Using 4 different analytical techniques, accurate characterization can be obtainedof all the 15 new surfactants
Polarity (cloud point analysis)Infrared spectraMolecular Weight by SEC1H-NMR
2.- EXPERIMENTALSANDRESULTS
RIGID PU FOAM
ANALYSIS
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2.- EXPERIMENTALSANDRESULTS
FORMULATION
PUR/PIRformulationwithpentaneasblowingagent
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2.- EXPERIMENTALSANDRESULTS
% pphp
Polyester-polyol 23 90,2Polyetherpolyol(long chain) 2,5 9,8
PMDI 64 251
TCPP 4 15,7SURFACTANT 1 3,92K-octoate catalyst 1,3 5,1Aminecatalyst(DMCHA) 0,3 1,18Water 0,5 1,96Pentane(iso 75%- n25%) 3,8 14,9
FOAMMEASUREMENTS (GENERALASPECT)
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2.- EXPERIMENTALSANDRESULTS
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
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2.- EXPERIMENTALSANDRESULTS
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
Low MW surfactants with very high EO content
Bad performance
Capping group has no clear effect
Ramification Medium High
FOAMMEASUREMENTS (GENERALASPECT)
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2.- EXPERIMENTALSANDRESULTS
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
Medium MW surfactants with high EO content
Acceptable performance
Capping group has no clear effect
No benefit is observedRamification Low Medium
FOAMMEASUREMENTS (GENERALASPECT)
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2.- EXPERIMENTALSANDRESULTS
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
-OHHYDROXYL
U-110(2) U-120(5) U-210(8) U-220(11) U-310(14)
-OCH3METHOXY
U-111(3) U-121(6) U-211(9) U-221(12) U-311(15)
-OCOCH3ACETOXY
U-112(4) U-122(7) U-212(10) U-222(13) U-312(16)
High MW surfactants with medium EO content
Very good performance
Capping group has no clear effect
No benefit is observedRamification Low
FOAMMEASUREMENTS (GENERALASPECT)
FOAMMEASUREMENTS (DIMENSIONALSTABILITY)
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OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
compression(Kg/cm2)
parallelcompression
verticalcompression
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OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
compression(Kg/cm2)
parallelcompression
verticalcompression
FOAMMEASUREMENTS (DIMENSIONALSTABILITY)
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OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
compression(Kg/cm2)
Compressionvaluesaremorerelatedtosurfactantcomposition(EO,PO,Siloxane%)
Ratherthatinfluenceofcapping
parallelcompression
verticalcompression
FOAMMEASUREMENTS (DIMENSIONALSTABILITY)
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OHhydroxyl OCH3 methoxy OCOCH3 acetoxy
2.- EXPERIMENTALSANDRESULTS
26
27
28
29
30
31
32
33
34
density(Kg/m3)density
Highdegreeofvariability
D(OH)=1,86lb/ft3 (29,8kg/m3)
D(OCH3)=1,89lb/ft3 (30,2kg/m3)
D(OCOCH3)=1,87lb/ft3 (29,9kg/m3)
Notendencyisobserved
FOAMMEASUREMENTS (DENSITY)
average
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2.- EXPERIMENTALSANDRESULTS
0,00
1,00
2,00
3,00
4,00
5,00
6,00
inches B2test(DIN4102)
In all cases, flammabilityresults are well above themaximum established by B2Test (DIN 4102)
PIR formulation
15,7 pphp TCPP
FOAMMEASUREMENTS (FLAMMABILITY– B2TEST)
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2.- EXPERIMENTALSANDRESULTS
10,00
15,00
20,00
25,00
30,00
35,00
U-110
U-111
U-112
U-120
U-121
U-122
U-210
U-211
U-212
U-220
U-221
U-222
U-310
U-311
U-312
mW/mK Lambdavalue/thermalconductivity (λ)
Thermal conductivitydecreases with higher MWsurfactants with lower EOcontent
No direct relation with thecapping group
AGED
RECENT
FOAMMEASUREMENTS (THERMALCONDUCTIVITY-LAMBDA)
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3.- CONCLUSIONS
INTHECHOSENPUR/PIRFORMULATIONFORLAMINATION,BIGGER
DIFFERENCESINPERFORMANCEHADBEENSEENRELATEDTO
THECHEMICALCOMPOSITIONOFTHESURFACTANT
(EO,PO,SILOXANE%) RATHERTHANTHEEFFECTOFTHECAPPINGGROUP
HASTHEREACTIVITYOFSILICONESURFACTANTSAMAJORIMPACTINA
PUR/PIRFORMULATIONFORLAMINATION?
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Thankyouforyourtime.
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