The capabilities of temperature resistance and salt resistance of polymeric solution with different contents of AMPS(contrasting with dualistic sample AM/DM 16), hydropHobic content (contrasting with sample AM/AMPS) have been studied;
The corrosion rate of steel of inhibitor YSH-05 was 1~4 g/(m2·h) in 15wt% hydrochloric acid,hydrofluoric acid and earth acid media at 90 ℃,and the inhibitive efficiency was all above 99% and the temperature tolerance was as high as 150 ℃.
An evaluation is conducted on temperature tolerance and salt-resisting properties of a novel polymer LH-3500 and optimal polymers available in sewage water in Gudao and the other oilfields.
Tests indicate that S-1 developed possesses the advantage of fluid loss control capacity and good temperature tolerance, salt tolerance (above 10%), Ca2- and Mg2- tolerance (above 6000mg/l).
Field applications show that the new capsule gel breakers exhibit good releasing control and retarding, and the temperature tolerance is as high as 90 ℃.
The performance assessment results show that: The incorporation of NaAMPS segments in polymer backbone of PAM results in excellent properties of copolymer, such as resistance to temperature and salt tolerance.
It is researched the influence of the composition of this material and the amount of each composition on the characteristics of the resistance to temperature,wind,water,and pressure etc.
The result showed that ECAs bonding had a good resistance to temperature dependent stress with a shear force ranging from 3.25 to 5.35 kg. Based on a combination of morphology and theory analysis,the failure mechanism of ECAs bonding was deeply discussed,and then some reasonable methods to improve performance of ECAs bonding were presented. Finally ECAs bonding reliability at present technical level was evaluated.
In order to examine the desulfurization activity of iron oxides at ambient temperature,the author did TG analysis on the prepared iron oxide hydroxides and iron oxides,and basically made clear the process of crystal phases transformation in heat treatment of FeOOH and FexOy,which is also helpful in preparing low and ambient temperature gas desulfurizer with high activity and with resistance to temperature changes.
This DNase activity of antibodies differs from serum DNases by the non-processive mode, temperature resistance, pH optimum, and the rate of DNA hydrolysis.
The change in the low-temperature resistance of iron single-crystal whiskers during magnetization reversal form a single-domain state to a state with a plane-parallel domain structure is studied theoretically.
The technique is tested on La0.7(Pb0.7Sr0.3)0.3MnO3 films on LaAlO3 and SrTiO3 substrates-the structures featuring a temperature resistance coefficient of 5-7%, which is the highest for manganite-containing materials at room temperature.
To deal with this contradictory situation, insolvable zirconium tricarboxybutylphosphonate (Zr(PBTC)) powder was employed to make a composite with SPEEK polymer in an attempt to improve temperature tolerance of the membranes.
Consideration has been given to the role of the number of charges introduced into the copolymer apart from the hydrophobic groups and to other factors determining the rheological properties of the gels and their resistance to temperature.
The genetic engineering enabled the plants to accumulate SBPase in chloroplasts and resulted in enhanced tolerance to high temperature stress during growth of young seedlings.
Bouteloua gracilis exhibited the highest tolerance to high temperature, with threshold values being 44-49°C for cool grown plants and 53-55°C for warm grown plants.
耐温
temperature resistance
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