Description: FKM premixed rubber is a kind of fluororubber premixed rubber added with a small amount of processing aids, fillers and all additive of curing systems. It solves the problem that the fluororubber vulcanizing agent is difficult to disperse during processing, and greatly improves the mixing efficiency of fluororubber.
Special properties:
Excellent wear & tear resistance; excellent ozone resistance & weather resistance
Heat resistance comparable to silicone rubber, better than any other rubber; excellent
resistance to superheated water or water vapor, excellent high vacuum resistance Good
appearance.
Excellent corrosion resistance, excellent resistance to moderate doses of radiation
Good low temperature performance
Good storage stability
Excellent antistatic property in low frequency and low voltage occasions
Calendering, extrusion fast, smooth surface, high strength, high hardness & low pressure
deformation, high chemical stability
Main applications:
FKM premixed adhesives are mainly used in high and low temperature sealing, vacuum equipment, chemical equipment, automobiles, aviation and other fields. It is also one of the indispensable high-performance materials for cutting-edge science and technology such as modern aviation, missiles, rockets, space navigation, ships, and atomic energy.
Characteristics:
Type ...............................................................................FKM
Natural color...................................................................... translucent
Relative density, g/cm3....................................................... 1.85-1.95
Fluorine content.................................................................... 60±5%
Moisture content, %...............................................................≤0.1
ML 1+4@100ºC..............................................................40± 5
Volatile content................................................................... <1.0%
Color ....................................................................................White
Curing Condition: (1) 1st vulcanization at 175 ºC × 10min
(2) 2nd vulcanization at 230ºC× 16h
Reference recipe :(phr)
| FKM premixed rubber |
100 |
| N990 |
30 |
| MgO |
3 |
| Ca(OH)2 |
6 |
| WS280 |
1 |
| Palm wax |
1 |
Product performance:
| product name |
LXF100CA |
LXF200CA |
| Project |
Test Methods |
unit |
Typical value |
| Mooney viscosity(ML 1+4@100ºC) |
53 |
48 |
| Vulcanization performance test:180ºC×5min×1arc |
| Minimum torque |
ASTM D2048 |
lb-in |
0.40 |
0.38 |
| Maximum torque |
lb-in |
9.02 |
8.46 |
| Scorch Time TS2 |
s |
72 |
73 |
| Positive vulcanization time TC90 |
s |
140 |
136 |
| 1,Mechanical properties 1.1 First vulcanization: 175ºC×10min, Second vulcanization: 230ºC×16h |
| Proportion |
ASTM D297 |
g/cm3 |
1.938 |
1.936 |
| Hardness (Shore A) |
ASTM D2240 |
Points |
70 |
70 |
| Tear strength |
ASTM D412 |
MPa |
11.28 |
10.58 |
| Elongation at break |
% |
257 |
248 |
| M100 |
MPa |
5.45 |
5.40 |
| 1, Mechanical properties 1.2 Changes in properties after aging at 200°C for 504 hours |
| Hardness (Shore A) change |
ASTM D2240 |
Points |
+3 |
+5 |
| Change in breaking strength |
ASTM D412 |
% |
-4.2 |
-8.0 |
| Elongation at break change |
ASTM D412 |
% |
-15.5 |
-22.5 |
| 2,Oil resistance 2.1 Changes in resistance to FAM B oil at 23°C for 48 hours |
| Hardness (Shore A) change |
ASTM D2240 |
Points |
-6 |
-10 |
| Volume change rate change |
ASTM D471 |
% |
+10.5 |
+16.5 |
| 2,Oil resistance 2.2 Performance after aging and drying at 100°C for 48 hours after being resistant to FAM B oil at 23°C for 48 hours |
| Hardness (Shore A) |
ASTM D2240 |
Points |
70 |
70 |
| Tear strength |
ASTM D412 |
% |
10.28 |
9.98 |
| Elongation at break |
ASTM D412 |
% |
245 |
224 |
| volume change rate |
ASTM D471 |
% |
+0.23 |
+0.52 |
| 2,Oil resistance 2.3 Diesel resistance change at 23°C for 48 hours |
| Hardness (Shore A) change |
ASTM D2240 |
Points |
0 |
-3 |
| volume change rate |
ASTM D471 |
% |
-0.03 |
+3.98 |
| 2,Oil resistance 2.4 Performance after aging at 23°C for 48 hours against diesel oil and drying at 100°C for 48 hours |
| Hardness (Shore A) |
ASTM D2240 |
Points |
70 |
69 |
| Tear strength |
ASTM D412 |
% |
10.25 |
9.67 |
| Elongation at break |
ASTM D412 |
% |
238 |
228 |
| Volume change rate% |
ASTM D471 |
% |
+0.34 |
+0.92 |
| 2,Oil resistance 2.5 Biodiesel resistance (RME) performance at 80°C for 504 hours |
| Hardness change (Shore A) |
ASTM D2240 |
Points |
-2 |
-4 |
| Volume change |
ASTM D471 |
% |
+3.1 |
+5.2 |
| Tear strength |
ASTM D412 |
MPa |
8.94 |
7.54 |
| Elongation at break |
% |
269 |
237 |
| 2,Oil resistance 2.6 Resistance to 5W/30 engine oil (RME) at 80°C for 504 hours |
| Hardness change (Shore A) |
ASTM D2240 |
Points |
-1 |
-4 |
| Volume change |
ASTM D471 |
% |
+3.52 |
+9.62 |
| Tear strength |
ASTM D412 |
MPa |
9.05 |
7.24 |
| Elongation at break |
% |
215 |
189 |
| 3,Compression set at 150°C for 24 hours (the vulcanization condition of the sample 1st curing at 175°C×10min and 2nd curing at 230°C×16h) |
| Compression set |
ASTM D395 |
% |
26.48 |
23.48 |
| 4,Ozone resistance 80pphm×20% for elongation×40ºC×120 hours |
| Cracked or not |
ASTM D1171 |
/ |
NO |
NO |
| 5,Low temperature retraction TR10 |
| TR10 |
GB 7758 |
ºC |
-20 |
-25 |
Q: Are you a factory or trading company?
A: We are rubber raw material manufacturer and owned 3 factories.
Q: Where is the loading port and How do you ship the goods?
A: Our factory is nearby Shanghai Port, but loading port can be negotiated. We could ship by sea, by air or by express(EMS, UPS, DHL, TNT, FEDEX and etc). Please confirm with us before placing orders.
Q: How can we guarantee the products' quality?
A: All the products must be tested refers to key specifications during the production and final inspection before shipment.
Q: What about the lead time?
A: It depends on the order quantity you place the order. Usually sample needs 5-8 working days, mass production needs 15-30 days.
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