Fluoroelastomer Copolymer Gum

Fluororelastomer Copolymer Gum (FKM-DS2600)
Confirmable with: Q/DYS005-2007
KFM-DS2600 is copolymer of HFP and VDF. Normally it is white or light yellow translucent elastomer whose fluorine content is over 66%. After vulcanizing process, FKM products have excellent mechanical performance, outstanding antioil property(fuel oil, synthesis oil, lubricating oil) and high thermal stability.

Quality Specification:
Item
Unit DS2601 DS2602 DS2603 DS2604
-1 -2 -1 -2 -1 -2
Appearance White or light yellow translucent rubber piece
Specific Gravity g/cm3 1.78~1.83 1.80~1.84 1.80~1.84 1.80~1.84
Mooney Viscosity ML(1+10),121℃ 10~29 30~39 40~60 61~79 80~100 100~120 121~200
Tensile Strength, ≥ MPa 11.0 11.0 11.5 11.5
Elongation at break, > % 150 150 160 160
After Aging24hr.at 275℃
Tensile Strength≥
Elongation at break MPa % 9.0
120 9.0
120 9.5
130 9.5
130
Compressive set, ≥ (200 ℃×24h,AF compression rate 30%) % 25 25 25 25
Oil-resistance (1#aircraft fuel, 200℃×24h,added weight),《 % 6 6 6 6
Properties Low viscosity, excellent rheological properties Moderate Viscosity Middle and high viscosity,good milling and calendaring performance High viscosity, high gum strength Ultra-high viscosity
Application Additive of high Mooney rubber, O-ring, anti-extrution parts of product O-ring made by compression moulding, injection moulding and injection,extruded hose Calendaring sheet, skeletal oil seal, extruded hose, etc. General parts made by injection moulding, and oil seals, etc. Parts made by compression moulding,m high strength vulcanized products.


Note: All of the standard test formulas adopt Bisphenol AF vulcanizing system

Main Applications:
Widely used in high temperature, aviation, autuomobile, petroleum and chemical industries, oils lubricants, etc. It is mainly used to produce gaskets, O-rings, sealing bowl with metal bone, diaphragms, tube, valve-plate, rolls, etc.

Attention:
1. Fluoroelastomer gum has good thermal stability below 260 ℃; It will minimally decompose when placed in the temperature of 260~300 ℃ for a long time, and poisonous HF and fluorocarbon organic compound are produced; When higher than 320 ℃, it will quickly decompose; When it meets fire, it also release poisonous HF and fluorocarbon organic compound.
2. FKM shouldn’t be mixed with metal powder (such as Al and Mg) or animine compound more than 10%. If that happens, temperature will arise and several elements will react with FKM, which will damage the equipment and operators.

Package and Storage:
1. Packed in PE bags, then packed carton case. Net weight: 20kg per drum.
2. Stored in dry and clean and cool places. The product is transported according to non-hazardous chemicals. Avoid contamination, sunlight and water.
3. Storage period is one year since production, when exceeding the shelf life, it still can be used as long as it is retested and approved.