This research focused on the application of reverse osmosis membrane to treat the condensate water containing formic acid,acetic acid,propionic acid,butyric acid,pentanoic acid,carproic acid,isobutyric acid and 2-methyl-butyric acid.The effects of water temperature,pressure and pH on retention rate of organic acids,as well as the retention mechanism were discussed.The results indicated the concentration of butyric acid,pentanoic acid and 2-methyl-butyric acid in producing water were below detection limit when the experimental conditions of water temperature at 20— 40 ℃,pressure at 0.5—1.5 MPa,pH at 4—10.The retention rate of formic acid,acetic acid,propionic acid and carproic acid decreased with the increase of water temperature and increased with the increase of pressure and pH.The water production rate increased when both water temperature and pressure increased.The mechanic screening of reverse osmosis membrane and the charge effect between organic acid and membrane should have important influences on the retention effect of organic acids.

Crosslinked nitrile rubber (NBR) /hindered phenol (AO-80) /carbon black composites were prepared by mixing AO-80 and carbon black into NBR with different bound acrylonitrile contents. The thermal properties, dynamic mechanical properties and mechanical properties of the composites were characterized by differential scanning calorimetry, dynamic mechanical analysis and tensile tester. The results showed that compared with pure NBR, the glass transition temperature of NBR/AO-80/carbon black composites increased greatly, and shifted to high temperature direction with increasing the bound acrylonitrile content of NBR. NBR/AO-80/carbon black composites showed excellent damping properties: loss factor (tan δ) was more than 1.22, and the effective damping temperature range (tan δ equal to or more than 0.3) was more than 38℃, the frequency range with high tan δ was wide at different reference temperatures. NBR/AO-80/carbon black composites had good mechanical properties and thermal aging resistance. Especially, N 220 S/AO-80/carbon black composites were the best in all-round properties.

在丁腈橡胶（NBR）中添加受阻酚AO-80和不同用量的炭黑N 220,制备了NBR/AO-80/N220复合材料,研究了复合材料的热性能、动态力学性能、物理机械性能和热老化性能。结果表明,NBR/AO-80/N220复合材料的玻璃化转变温度与NBR/AO-80复合材料相当,均高于纯NBR,且损耗峰峰值高于1.19,有效阻尼温域（损耗因子不小于0.3）为36℃左右,具有良好的阻尼性能;NBR/AO-80/N220复合材料的储能模量（E′）大于NBR/AO-80复合材料,且随着N 220用量的增加,E′逐渐增大,NBR/AO-80/N220复合材料的拉伸强度、100%定伸应力、300%定伸应力和撕裂强度均逐渐提高,N220的最佳用量为30份;NBR/AO-80/N220复合材料具有良好的耐热老化性能。

A lead-free low melting glass consisting of P2O5,V2O5,B2O3 and ZnO was studied for electronic sealing application.The effects of V2O5 and B2O3 concentrations on the glass softening temperature(Tf),thermal expansion coefficient and thermal stability were investigated.The results showed that Tf decreased with V2O5 concentration increasing,while as the content of B2O3 increased,Tf first increased and then decreased,which appeared boron abnormal phenomenon.When the glass contained 8%(mol) V2O5 and 15%(mol) B2O3,Tf,thermal expansion coefficient and thermal stability could meet the requirements,but the chemical stability of the glass was poor.But addition of small amounts of Al2O3 and Fe2O3 could greatly improve the chemical stability.Consequently,a glass with molar percentage composition of 26.0P2O5-17.3V2O5-7.7B2O3-45.0ZnO-2.0Al2O3-2.0Fe2O3 with a low transition temperature of 340℃,a thermal expansion coefficient of 7.5×10-6 ℃-1(25～300℃),and a weight loss of 0.63 mg/cm2 after immersing in 90℃ water for 10 h,was successfully prepared for electronic sealing applications.Its properties were comparable with those of traditional low melting sealing glasses.

CWS (Coal Water Slurry) is an important industrial fuel that can replace oil. To raise stability of Datong coal, the CWS was made with different Particle Size Distributions (PSD) by the wetting method. The concentration, viscosity and stability of each slurry were measured, and a best PSD formula was provided.