Introduction
Dawn Special Elastomer Co., Ltd. is an enterprise that develops, produces, and sells HNBR with high technology content and high added value, and at the same time extends the processing and production of mixed rubber to the downstream.
The HNBR plant has a designed capacity of 3,000 tons per year, and the first phase of 1,000 tons was officially produced in 2019. The HNBR produced by Dawn Special Elastomer Co., Ltd, makes China the third country in the world to break through HNBR technology in industrialization, besides Germany and Japan.
Properties of HNBR
Dawn HNBR is a highly saturated elastomer that is treated by special hydrogenation. Compared with NBR, the molecular structure of HNBR contains a small amount or no carbon-carbon double bonds.
It also has better thermal oxygen aging (working at 150℃ for a long time), ozone resistance, radiation resistance, chemically corrosive medium resistance(good resistance to hydrogen sulfide), and good dynamic properties, while maintaining the oil resistance and wear resistance of NBR.
Grades of HNBR
We have 12 HNBR grades to meet the needs of different customers.
| Item |
Unit |
DN3406 |
DN3408 |
DN3416 |
DN3418 |
DN3426 |
DN3428 |
DN3448 |
DN3404LX |
DN3448L
|
DN3428L
|
DN3428D
|
DN3408L
|
| Acrylonitrile Content |
% |
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
34.0±1.5
|
| Mooney Viscosity |
ML1+4100℃
|
55～70
|
80～95
|
55～70
|
80～95
|
55～70
|
80～95
|
80～95
|
|
|
|
|
|
| Iodine Value |
mg/100mg |
≤10
|
≤10
|
>10.0
≤18.0
|
>10.0
≤18.0
|
>18.0
≤38.0
|
>18.0
≤38.0
|
>46.0
≤60.0
|
≤10.0
|
|
|
|
|
| Hydrogenation Degree |
% |
99 |
99 |
97 |
97 |
94 |
94 |
83 |
99 |
83
|
94
|
94
|
99
|
Applications of HNBR
The Dawn HNBR has been maturely applied in many products such as oil exploration gaskets, new energy vehicle motor seals, automotive timing belts, refrigerant-resistant O-rings, and aircraft oil pipes.
The car timing belt made of Dawn HNBR has a service life of 250,000 to 300,000 kilometers, which basically achieves the same life as the engine and solves the problem that the timing belt must be replaced when the car travels 60,000 to 80,000 kilometers.
In terms of new energy vehicles, Dawn HNBR has been successfully verified in the field of battery carbon tube dispersants, and new low-cost and high-efficiency catalysts have been successfully developed and have been used stably.
If you are interested in Dawn HNBR, please feel free to contact us or inquire online!
