Pressure vessels, commonly used to store compressed natural gas, are increasingly in demand to store hydrogen in fuel cell vehicles. Composites high strength-to-weight ratio makes them a good choice for hydrogen pressure vessels, which require high impact and chemical resistance, as well as high strength to withstand the high operating pressures and constant filling and emptying cycles.
ARALDITE® resin technology has a proven track record in CNG applications, and meets the stringent requirements of composite hydrogen storage vessels (types 3 to 5). ARALDITE® resin composite solutions provide the high pressure-cycling performance and high burst resistance required in hydrogen applications.
Glass transition temperature (Tg):
132 - 138°C
Pot life:
56 - 62 h at 23°C
Suitable for:
REACH compliant anhydride based system. Very long latency combined with low reaction exotherm. Mix viscosity of 600-1000 mPas at 25°C.
Glass transition temperature (Tg):
115 - 125°C
Pot life:
> 48 h at 23°C
Suitable for:
REACH compliant anhydride based system. Very high fracture toughness (KIc = 1.5 – 1.6 MPa.m1/2) combined with very long latency and low reaction exotherm. Mix viscosity of 600 - 1000 mPas at 25°C.
Glass transition temperature (Tg):
122 - 130°C
Pot life:
80 - 90 h at 23°C
Suitable for:
REACH compliant anhydride based system. Very long latency combined with low reaction exotherm. Mix viscosity of 450-700 mPas at 25°C.
Glass transition temperature (Tg):
115 - 120°C
Pot life:
260 - 280 min at 23°C
Suitable for:
Amine based system with high mechanical performance, low-temperature curing capability and higher reactivity compared to anhydride systems. Mix viscosity of 500-650 mPas at 25°C.
Glass transition temperature (Tg):
140 - 150°C
Fracture Toughness:
0.9 - 1.1 MPa.m½
Suitable for:
High temperature resistance system designed to satisfy the requirements of hydrogen vessels manufactured via towpreg winding. Very long latency for ease of use, optimized manufacturing viscosity profile and fast curing for high productivity.
Glass transition temperature (Tg):
120 - 130°C
Fracture Toughness:
1.5 - 1.6 MPa.m½
Suitable for:
Highly toughened system designed to withstand the extreme pressure-cycling requirements of hydrogen vessels manufactured via towpreg winding. Optimized manufacturing viscosity profile and fast curing for high productivity.
Glass transition temperature (Tg):
110 - 115°C
Fracture Toughness:
1.4 - 1.6 MPa.m½
Suitable for:
Highly toughened system designed to withstand the extreme pressure-cycling requirements of hydrogen vessels manufactured via the HP-RTM injection process.
Our experts provide simulations and technical support on site at every stage of your development project.
Our composite solutions deliver superior thermomechanical performance (high strength, elongation at break, fracture toughness), as well as hot/wet and ageing performance. They are designed to offer fast processing for cost-effective mass production.
ARALDITE® resin systems offer the flexibility to be used with the well-established Wet Filament Winding process, or with the emerging RTM injection and Towpreg Winding processes, which are gaining popularity thanks to shorter cycle times and increased part consistency. Whichever process you choose, our experts will help you reduce development times and optimize productivity.
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Our resin technology meets the stringent requirements of composite hydrogen storage vessels, offering high-impact and chemical resistance.
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Our leading composite expertise, broad product range and unique simulation capabilities can reduce development cycles by up to 50 %.
Huntsman Advanced Materials offers innovative solutions that support manufacturers in the design and production of composite pressure vessels for hydrogen storage and transportation.
Composite Pressure Vessels offer high strength and greatly reduced weight compared to Type 1 vessels. Type 2 vessels typically weigh 60-70% as much as metal vessels. Type 3 and 4 vessels can weigh as little as 25% as much as metal vessels. Type 4 vessels also require less space, and deliver improved corrosion resistance, which extends service life and improves safety. Carbon fiber-reinforced epoxy resin composites are the preferred choice.
As a global market leader for epoxy resin systems used in Type 3 and Type 4 Pressure Vessels, we can support your projects globally. Our solutions cover all manufacturing processes, from Wet Filament Winding to RTM injection to Towpreg Winding. With our simulation support, we have demonstrated that we can increase Pressure Vessel productivity by up to 50%.
Huntsman supports customers developing composite Pressure Vessels with state-of-the-art computer simulation capabilities, enabling process optimization and accurate through-thickness property prediction. Our simulation capabilities combined with our epoxy resin, application and processing expertise will help you to select the right system for your project.
We have demonstrated that our solutions for Pressure Vessels can deliver up to 50% shorter process cycles and up to 50% shorter mold occupation times.
