A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reactin...A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reacting the pentacoordinate silicon with HCl. The product was characterized and analyzed by FTIR, NMR and TG/DTG.展开更多
The styrene-acrylic（St-BA-MAA/SDS-DNS86/H2O）emulsion modified by the ethyl-tetra-coordinated silicon was prepared,using water as the solvent,the laurel sodium sulfate and alkyl ethyl sulfuric acid sodium（SDS-DNS86...The styrene-acrylic（St-BA-MAA/SDS-DNS86/H2O）emulsion modified by the ethyl-tetra-coordinated silicon was prepared,using water as the solvent,the laurel sodium sulfate and alkyl ethyl sulfuric acid sodium（SDS-DNS86） as the emulsifiers potassium per-sulfate（KPS） for the initiator and adding the initiator minute steps for free radical polymerization.The thermal properties analyzed by TG and the glass transition temperature determined by DSC were researched to the styrene-acrylic emulsion and emulsions modified by ethyl-tetra-coordinated silicon.The results indicated that the thermal properties of the modified membrane increas and the glass transition temperature of the modified membrane decreases and adhesion force of the modified membrane enhances.展开更多
文摘A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reacting the pentacoordinate silicon with HCl. The product was characterized and analyzed by FTIR, NMR and TG/DTG.
文摘The styrene-acrylic（St-BA-MAA/SDS-DNS86/H2O）emulsion modified by the ethyl-tetra-coordinated silicon was prepared,using water as the solvent,the laurel sodium sulfate and alkyl ethyl sulfuric acid sodium（SDS-DNS86） as the emulsifiers potassium per-sulfate（KPS） for the initiator and adding the initiator minute steps for free radical polymerization.The thermal properties analyzed by TG and the glass transition temperature determined by DSC were researched to the styrene-acrylic emulsion and emulsions modified by ethyl-tetra-coordinated silicon.The results indicated that the thermal properties of the modified membrane increas and the glass transition temperature of the modified membrane decreases and adhesion force of the modified membrane enhances.
