【摘 要】
：
Calcium lignosulphonate was used to synthesize a spherical lignosulphonate resin in a cheap and non-toxic disperse medium by reversed phase suspension polymeriz
【机 构】
：
Key Laboratory of Enhanced Heat Transter & Energy Conservation of Ministry of Education,State Key La
【基金项目】
：
高等学校博士学科点专项科研项目;
论文部分内容阅读
Calcium lignosulphonate was used to synthesize a spherical lignosulphonate resin in a cheap and non-toxic disperse medium by reversed phase suspension polymerization. The process conditions were optimized by orthogonal experiments. Under the optimal conditions (T=95℃, cHCl=3mol·L-1, mHCHO:mCLS=7%, wCLS=50%), globulation took about 20min and the product was featured with excellent spherical shape, narrow particle size range, 61.20% of water retention capacity, 0.83mmol·ml1 of total volume exchange capacity and 3.46mmol·g-1 of total exchange capacity. The results of Scanning Electron Micrograph and Scanning Probe Micrograph indicate that spherical lignosulphonate resin has a rugged surface with porous microstructure in the gel skeleton. The average pore size of dry samples was determined to be 10.46nm by the BET method.
其他文献
The aim of this study is to apply the concept of functionally graded materials (FGMs) to cemented carbides and to develop high-performance rock drill buttons.Co
Creep tests of Mg-5%Zn-2%Al (-2%Y) (mass fraction) alloy were carried out at 175℃ under the load of 50MPa,on the cast and solution condition,respectively.Relat
Water-using operations in the process industry have demands for water usually both on water quality and temperature, and the existing mathematical models of hea
Hydroxyapatite (HA) coating has been prepared on titanium substrate through an electrochemical deposition approach.In order to improve the bonding strength betw
The ab initio self-consistent DV-Xα (discrete variational Xα) method was used in its relativistic and spin-polarized model to investigate the ground-state ele
The solvent selection methodology developed earlier by Gani et al. (Comp. Chem. Eng., 2005) has been extended to handle multi-step reaction systems. The solvent
The directional solidification process of turbine blade sample castings was investigated in the work. Variable withdrawal rates were used in one withdrawal proc
In order to meet the forming demands for low plasticity materials and large height-diameter ratio parts, a new process of hydrodynamic deep drawing (HDD) with i
Unidirectional solidification of pivalic acid(PVA)-ethanol(Eth)mixture was performed to examine whether an allowable range of primary dendrite spacing definitel