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Rachel Yu, Advanced R&D Engineer, Owens Corning China Composites Center
High Performance Advantex® Glass Fibers for CNG TanksCNG 气瓶用高性能 Advantex® 玻璃纤维
Copyright © 2015 Owens Corning. All Rights Reserved. Picture: iStockphoto.com
Innovation
Owens Corning
helps innovate
Owens Corning Composite Solutions Business
Is a global leader in the glass composites field Responsible for major industry innovations including competitor glass,
corrosion-resistant Advantex® E-CR glass and a range of high performance glass reinforcements
With local supply and technical support to its customers wherever they want Headquarters in Toledo, Ohio, US Operating 30 plants in 15 countries globally 6 science and technology centers globally (USA, FR,CN, JAP, BE, NL)
A China view of Owens Corning Composite Solutions
Fabrics (Beijing)
Fabrics (Changzhou)
Asia pacific regional HQ(Shanghai)
Reinforcements(Yuhang)
Reinforcements (Beijing)
Reinforcements (Hangzhou)
China Composites Center(Shanghai)
China Composites Center A hub in China for innovation in glass fiber technology
Open September 2012, located in Shanghai
6,000 sqm dedicated for material science
Staffs of talented scientists, engineers and technicians
Key functions for CNG tank application development
Material characterization:Chemical and Physical Analysis of Glass Fiber, Resin, Composite
World-class CNG prototyping capability:4-Axial Filament Winding Machine
Composite structural design: Conceptual design, material selection, shape design, layout
Mechanical analysis:Stress-strain (static, fatigue, creep)
Safety/failure analysis: Strength, damage tolerance, vessel burst
China Composite Center filament winding lab
4 Axis for HPP and CNG developments
Max. mandrel clamping length: 3500 mm
Diameter: 10 mm to 600 mm CNC-Processing software
‘COMPOSICAD Silver’
Maximum pressure rate: 1.17 MPa/s Pressure control precision: ± 1% Test fluid: water
EHA Filament Winding Machine Burst Pressure Testing
Composites design, modeling and analysis
Modeling tool provides quick evaluation of materials and structural design and guidance for design of experiments
Multi level capabilities
Micro-mechanics Ply Laminate Structure
CNG cylinder design
Type 1 Type 2 Type 3 Type 4
Market Share 93 % 4% <2% <2%
Design Metal
Metal liner reinforced with
resin impregnated continuous fiber
(hoop wrap)
Metal liner reinforced with
resin impregnated continuous fiber
(full wrap)
Resin impregnated continuous filament with a non-metallic
liner
Material CrMo Steel CrMo Steel w/ Glass Fiber
Aluminum w/ HP Glass &/or Carbon
HDPE Liner with Carbon
Sources: CompositeMarketReports.comCompositeWorld.com
CNG cylinder design – weight and cost
Source: Owens Corning Composite Solutions
0.0 0.5 1.0 1.5
T3 & T4 carbon fiber vessels
T3 glass fiber vessels
T2 glass fiber vessels
T1 steel vessels
kg/L
Nor
mal
ized
Cos
t/L
0.50
0.60
0.70
0.80
0.90
1.00
Opportunities of combining the materials, i.e. hybrid design
Advantex® glass
Purpose of project To understand the impact of corrosion (sulfuric acid and tap water) to the burst
pressure of T2 CNG cylinders To understand the impact of fiber properties to mechanical performance of T2 CNG
cylinders (glass fiber property and unidirectional panel) Provide a guidance of safe use of cylinders to end users
Advantex® glass makes durable, safe
CNG cylindersfor automotive – A
Cooperation Project with Chongqing
Special Equipment Inspection Institute
Pictures: Copyright © Courtesy of Beijing Tianhai Industry Co., Ltd
Many causes can allow corrosive media to reach glass fibers
Poor curing Diffusion Osmosis Applied stress Embrittlement Micro-cracking Impact Environmental cycling
Real corrosion failure risks in CNG with competitor glass
Liner Rust and Deterioration
Consistent Advantex® glass wrappedsurface could prevent hoop-wrapcracking… and moisture to steel liner
Take risk out... Put Advantex® glass in
Advantex® glass is a patented boron-free corrosion resistant
E-CR glass fiber
With increased mechanical properties compared to E & E-CR glasses With improved corrosion resistance compared to Competitor glass Meeting ASTM D 578-00 glass standard And ISO 2078 glass standard for acid environments
… While E-glass is standard electrical
grade glass with poor corrosion
resistance
Superior corrosion resistance of Advantex® glass
FRP laminate in 10% H2SO4 at ambient temperature for 1 month Competitor glass starts to break down Advantex® glass continues to perform and maintain its strength
Advantex® GlassCompetitor- glassGlass Fiber Strand Resin Glass Fiber Strand Resin
The scanning electron pictures are from Owens Corning corrosion lab in 2011.
Mechanical performance of OC Advantex® vs competitor glass
OC Advantex® 158B 1100TEX
showed
6% higher in ITS, and
higher modulus
OC Advantex® 158B 1100TEX has
higher ILSS retention
after aging at 98 water for ℃
72hrsOC Advantex 158B 1100TEX
Competitor glass 1200TEX
2200.00
2250.00
2300.00
2350.00
2400.00
2450.00
Impregnated Tensile Strength
OC Advantex 158B 1100TEX
Competitor glass 1200TEX
77.00 78.00 79.00 80.00 81.00 82.00 83.00
Impregnated Tensile Modulus
OC Advantex 158B 1100TEX
Competitor glass 1200TEX
50.0
51.0
52.0
53.0
54.0
55.0
Interlayer Shear Strength
OC Advantex 158B 1100TEX
Competitor glass 1200TEX
687072747678
ILSS Retention Rate after Aging at Boiled Water for 72hrs
MPa
GPa
MPa%
ITS Test Method: ISO 9163, ILSS Test Method: ASTM 2344, all the data are based on Dow Varoforce TW110/161 resin system
Flat panel performance of Advantex® glass vs competitor glass
OC Advantex® 158B 1100TEX showed
13% higher in 90°which would help to avoid hoop cracks in
Auto-frettage process
0°/90°Tensile strength method: ISO 527-5; Shear strength method: ISO 14130
OC Advantex 158B 1100TEX
Competitor glass 1200TEX
1060.0
1080.0
1100.0
1120.0
1140.0
0°Tensile strength of Advantex® glass vs Competitor glass
OC Advantex 158B 1100TEX
Competitor glass 1200TEX66.0 66.5 67.0 67.5 68.0 68.5 69.0
Shear strength of Advantex® glass vs Competitor glass
MPa
MPa
OC Advantex 158B 1100TEX
Competitor glass 1200TEX48.0 50.0 52.0 54.0 56.0 58.0 60.0 62.0
90°Tensile strength of Advantex® vs Competitor glass
MPa
Fatigue performance of Advantex® glass vs competitor glass after 100 hrs in 30% sulfuric acid
10000 100000 1000000 100000000
100
200
300
400
500
600
700
f(x) = − 55.2848255252578 ln(x) + 1190.52600962293
f(x) = − 55.684127537697 ln(x) + 1228.40092317819
The UD panel sample were aged in 30% H2SO4 for 100hrs, the sample were preloaded at 12000N for 1hrs before ageing in acid
OC Advantex® 158B 1100TEX got better
Better fatigue performance
after 100 hrs in 30% sulfuric acid
Stress corrosion in 10% sulfuric acid
OC Advantex® 158B 1100TEX Competitor glass 1200TEX
After acid-stress corrosion test
After acid-stress corrosion test
After acid-stress corrosion test
After acid-stress corrosion test
At 800kg load level OC Advantex® 158B 1100TEX
failed at about 2 weekswhile competitor glass only about
0.5hr.
Real corrosion failure risks in CNG with competitor glass
Advantex® 158B 1100TEX showed better impregnated tensile strength and ILSS retention in boiled water
OC Advantex® 158B 1100TEX showed 13% higher in 90°tensile strength, which would help to avoid hoop cracks in auto-frettage process
At similar stress level OC Advantex® 158B 1100TEX got better fatigue performance after 100 hrs in 30% sulfuric acid
OC Advantex® 158B 1100TEX showed much better stress corrosion resistance than competitor glass
Pictures: Copyright © Courtesy of BTIC© Courtesy of Beijing Tianhai Industry Co., Ltd
For questions or inquiries, please contact:
於秋霞 （ Owens Corning ）[email protected]
顾明华 （ Owens Corning ）[email protected]
Copyright © 2015 Owens Corning. All Rights Reserved. Picture: iStockphoto.com
