Epoxy Resin3221A/B with Hardener for Filament Winding for Composite LPG Gas Cylinder

• Customization: Available
• CAS No.: 25068- 38-6
• Molecular Principal Chain: Other
• Model NO.: 3221A/B
• Mixing Density (25oc, g/cm3): 1.1-1.2
• Mixing Viscosity (25oc, MPa.S): 350-600
• Shelf Life ( 25oc, Months ): 24
• Glass Transition Temperature, Tg (Oc): 120-130
• Tensile Strength (MPa): 75-85
• Tensile Modulus (MPa): 2700-3200
• Bending Strength (MPa): 120-130
• Bending Modulus (MPa): 2700-3200
• Transport Package: Container
• Specification: A Grade Quality
• Origin: China
• HS Code: 35069120
• Production Capacity: 10000ton/Year

Product Description

 

Product Description

 The 3221A/B Filament Winding System consists of an epoxy resin and an acid anhydride hardener. This system is intended to provide good thermal and chemical Resistance, low viscosity, high fiber bond with ease of processability and long pot-life.
 

Advantages & Applications

Advantages:
1.Long operating time
2.Long pot-life
3.Good infiltration for glass fibers & carbon fibers

Applications:
This 3221A/B Filament Winding System is suitable for the manufacture of structural composites for the Oil,Gas and Chemical industry.
1.Pressure vessels, such as hydrogen cylinder
2.Pipes
3.Tanks

This is Composite LGP Gas Cylinder. 

 

Liquid Properties

Property*	3221A Epoxy	3221B Hardener
Viscosity ( 25oC, mPa.s )	1200- 1500	100-200
Density ( 25oC, g/cm3 )	1.1- 1.2	1.1- 1.2
Epoxide equivalent weight (g/mol)	175- 190
Acid anhydride equivalent weight (g/mol)		180-220
Shelf Life ( 25oC, Months )	24	24

*Typical value, not to be construed as specifications.

Recommended Process

The curing system can be adapted to each applications. Accordingly, times, temperatures, and heating rates should be adjusted such that the entire composite product fully cured to attain full properties.

3221A/B
Ratio by weight	100:100
Mixing viscosity (25oC, mPa.s)	350-600
Mixing density (25oC, g/cm3)	1.1- 1.2

Please mix the resin/hardener in correct ratio specified above, any change would not affect the reaction speed but cause curing problem. Adding hardener into the resin and stir it thoroughly.

Casting Properties

Property*	3221A/B	Test Method
Glass Transition Temperature, Tg (oC)	120- 130	DSC, Mid-point
Tensile strength (MPa)	75-85	ASTM D638
Tensile modulus (MPa)	2700-3200	ASTM D638
Elongation (%)	6.5-9	ASTM D638
Bending strength (MPa)	120- 130	ASTM D790
Bending modulus (MPa)	2700-3200	ASTM D790
Curing condition	2hour@ 90o C and 3hour@ 110 oC

*The listed data is typical physical property, not to be construed as product specification

Packaging & Storage

1.The product is packed in a clean and dry container, keeping sealed.
2.Shelf life: 24 months below 25 oC, stored in cool, dry and well ventilated place, decreasing with improper storage or transportation conditions.
3.3221A epoxy should be stored in room temperature and sealed tightly. Please heat it to 60-70oC and stir before using when there is crystallization or sedimentation. 
4.3221B hardener is extremely sensitive to water and temperature and high humidity storage can greatly affect the reactivity and final performance of system materials. So it should be stored in room temperature and sealed tightly.
 

Customer Notice

1.This resin contains ingredients which could be harmful if mishandled. Contact with skin and eyes should be avoided and necessary protective equipment and clothing should be worn.  maintains Material Safety Data Sheets (MSDS) on all of its products. MSDS contain health and safety information for your development of appropriate product handling procedures to protect your employees and customers. personnel are available to assist customers in dealing with ecological and product safety considerations. For more information on the regulatory status of this product, please refer to the MSDS for this product.
2.This specification will be adjusted with the development of technology. The company reserves the right to modify certain technical data.

 

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