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Citation: ZHAO Shuixia, WANG Lailai. Synthesis of Organosilixane Prepolymer and Their Application in Chemical Sand-fixing[J]. Chinese Journal of Applied Chemistry, ;2011, 28(7): 753-758. doi: 10.3724/SP.J.1095.2011.00441 shu

Synthesis of Organosilixane Prepolymer and Their Application in Chemical Sand-fixing

ZHAO Shuixia ,
WANG Lailai ^,

1.
State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Corresponding author: WANG Lailai,
Received Date: 29 July 2010
Available Online: 28 December 2010
Fund Project: 甘肃省科技支撑计划项目(0708NKCA119) (0708NKCA119)

Organosilixane prepolymer derived from methyltriethoxylsilane was synthesized,and characterized by IR and ¹H NMR.The hydrolysis and condensation of the methyltriethoxylsilane were carried out in the presence of a catalytic amount of hydrochloric acid.Using 0.60% NaOH-CH₃OH solution as curing agent,the curing performance of the prepolymer at various temperature was investigated.The curing time was 9 min at 30℃,and 4 min at 50℃,when 0.05 mL 0.60% NaOH-CH₃OH was added to prepolymer-industrial ethanol solution with the volume ratio of the prepolymer to industrial ethanol at 1:1.The mixture of organosilixane prepolymer and polyvinyl alcohol(PVA) was used as chemical sand-fixing material for the first time.The crust,which was formed by using this material,had good water resistance,ageing resistance(under 16 h ultraviolet irradiation),and shear strength value.The cohesion value was 483.7 kPa,and the angle of internal friction was 68.39°,when the mass ratio of polyvinyl ethanol to organosilixane prepolymer was 1:4.
- methyl triethoxysilane,
- organosilixane prepolymer,
- polyvinyl alcohol,
- room-temperature curing,
- chemical sand-fixing agent
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