Comparison of physical properties of HNBR rubber material with other rubber materials?
Hydrogenated nitrile rubber, referred to as "HNBR" or "H-NBR". It is a new variety of nitrile rubber (NBR).
HNBR has a high temperature resistance of 130~180 degrees, cold resistance of -55 ~ -38 degrees, and good mechanical properties, compared with other polymers, can meet the requirements of the automotive industry. HNBR with ZnO/ methacrylate (MAA) can be used to make V-belt, triangular V-belt, multi base rubber, vibration isolator and so on. It can also prepare sealing ring, sealing element, heat resisting tube and so on. In oil drilling, rubber products are required to withstand high temperature, high pressure, acid, amines, H2S, CO2, CH4 and other tests of steam. The products prepared by HNBR can be acid resistant, oil resistant and solvent resistant. With the ZnO/MAA HNBR reinforcement can be used for the production of drilling mud pump piston and protection box. In addition, the beating method HNBR can be used as a sealing washer washer made of paper oil industry and automobile industry. HNBR heat and radiation resistance properties than silicon rubber, fluorine rubber, poly four vinyl chloride is better, suitable for all kinds of rubber seals for power station, is also used as a hydraulic pipe, hydraulic seals, power station for cable sheath, can also be used for printing and fabric roller, weapons components and aerospace seals, cover, fuel capsule; HNBR latex can be used as a surface coating (painting), textile, paper, leather, metal, ceramic fiber, non-woven adhesive, and foam rubber, latex impregnated products etc.. In addition, with ZnO/MAA, peroxide and high wear furnace HNBR, its comprehensive performance is better than ordinary HNBR.
Hydrogenated nitrile rubber (HNBR) is a highly saturated elastomer obtained by the special hydrogenation of nitrile butadiene rubber. Hydrogenated nitrile rubber has good oil resistance (of fuel oil, lubricating oil, aromatic solvent resistance and good); and due to their high saturation, which has good heat resistance, excellent chemical resistance (of freon, acid and alkali resistance is good, excellent) ozone resistance, high anti compression permanent deformation performance; at the same time the hydrogenated nitrile rubber also has high strength, high tear resistance, excellent wear resistance and other characteristics, is one of the most outstanding performance of the rubber.
HNBR NBR maintain the original excellent oil resistance and heat resistance, and obtained very good (150 degrees high temperature resistant), ozone resistance, its application field has broken the traditional field of NBR, the chlorinated polyethylene, chlorosulfonated polyethylene and special rubber is also subject to certain impact. From an economic point of view, the HNBR sales price is temporarily more expensive, but still much lower than the fluorine rubber. At the same time, because of its low stiffness, good process performance and low density, more fillers can be added, and the unit volume of HNBR products is only about half of that of HNBR. Therefore, it will be a substitute for special elastomers such as fluorine rubber. Although HNBR has been produced abroad for many years, its application field is expanding constantly, and it is still blank in our country. We should develop HNBR at the right moment. According to a preliminary understanding, China's Daqing, Shengli Oilfield has more than 2000 export two wells with submersible pump in the depth of 2000 meters, pumping temperature is about 140 DEG C, such as the use of NBR to the spindle, use only a few months or even shorter period, such as the use of HNBR to the spindle, use period of up to one year or more. Nanjing rubber products factory in China needs more than HNBR30 tons per year. In the manufacture of a HNBR, the catalytic hydrogenation technology of NBR is the key technology and solution conditions for hydrogen production NBR harsh, Portland company already in this work, the rhodium recovery rate is low, the cost is relatively high. Water soluble catalyst of hydrogen and two-phase hydroformylation is separation and recovery and recycling based on noble metal catalysts, once can make the application of this kind of catalyst to polymer hydrogenation, hydrogenation can use them to carry out NBR, we have synthesized two water soluble phosphine ligands, ongoing efforts in this aspect.
