HNBR is a kind of highly saturated special elastomer obtained by hydrotreating NBR.Compared with NBR, the molecular structure of HNBR contains little or no carbon carbon double bond, while maintaining NBR oil resistance, abrasion resistance and other performance at the same time, also has more excellent heat-resistant oxygen aging (can be long-term work under 150 ℃), ozone resistance, radiation resistance, resistance to chemical media to hydrogen sulphide has good resistance to tolerance and good dynamic performance, etc., is a kind of comprehensive performance of special rubber.
Dawn HNBR competitive advantage
1.Adopt self-developed core catalyst.
2.At present, Dawn Special Elastomer Materials Co., Ltd. is the largest HNBR manufacturers in China, and Dawn Group has strong financial strength and brand influence.
3.Our ultimate goal is "stable product quality + domestic price".
Grades |
Acrylonitrile content , % |
Mooney viscosity (ML100°C1+4) (±6) |
Iodine value mg/100mg |
Saturability %(±1) |
Remarks |
DAWN18968 |
18 |
80 |
7-15 |
96 |
Low ACN grade for optimal flexibility and excellent compression set at very low temperature, designed for extreme service conditions (peroxide curable) |
DAWN21968 |
21 |
80 |
7-15 |
96 |
Optimal combination of heat and low-temperature resistance, designed for extreme service conditions (peroxide curable), outstanding low mold fouling |
DAWN34998 |
34 |
80 |
4-9 |
99 |
for lifetime belts, O-rings, gaskets and seals requiring maximum heat resistance and dynamic performance |
DAWN34957 |
34 |
70 |
9-15 |
95 |
optimal combination of heat resistance, dynamic properties and processing;recommended standard grade for sulfur cure |
DAWN34907 |
34 |
70 |
20-30 |
90 |
Optimal compromise between low-temperature compression set and oil swell resistance; especially suited for rolls and dynamic oil field components |
DAWN37908 |
37 |
80 |
20-30 |
90 |
Outstanding oil resistance |
DAWN37958 |
37 |
80 |
9-15 |
95 |
special low RDB type, comparable to DAWN37998 (peroxide cure recommended) to increase crosslink density for high modulus and/or low compression set applications |
DAWN3795H |
37 |
120 |
9-15 |
95 |
High Mooney viscosity compared to DAWN37958 |
DAWN37998 |
37 |
80 |
4-10 |
99 |
lower swelling compared to DAWN34998 |
DAWN43907 |
43 |
75 |
20-30 |
90 |
ideal for severe application conditions in hoses, diaphragms, O-rings and seals for automotive and oil field applications |
DAWN43958 |
43 |
85 |
9-15 |
95 |
excellent resistance to oils; should be used instead of DAWN43998 in case improved dynamic and bonding properties are required |
DAWN43998 |
43 |
80 |
4-10 |
99 |
very high temperature resistance combined with minimal swelling in oils and fuels; ideal for severe application conditions in hoses, diaphragms, O-rings and seals for automotive and oil field applications |
Application
1.Automobile timing belt
2.Oil seal
3.Oil - resistant packer rubber tube for oil field industry
Material characteristics:
1) High strength, high wear resistance, excellent compression resistance.
2) Excellent sealing performance and dimensional stability.
3) It is excellent in hydrogen sulfide and oil resistance, and meets the application requirement of deep well oilfield.
4) -40°C~+150°C long-term using
4.Aircraft oil - resistant conveying pipe
Material characteristics:
1) High strength,Tearing resistance.
2) Excellent performance in aviation kerosene, hydraulic oil and lubricating oil.
3) Ozone resistance aging, thermal oxygen aging performance excellent.
4) -40°C~+150°C long-term using
5.Other Applications