Cement foaming agent preparation process
The invention relates to a cement foaming agent and a preparation process technology, which is applied in the field of foaming agents, and can solve the problems of small foaming multiple and unstable foaming agent, and achieve the improvement of cell density, the reduction of foaming dosage, and the reduction of cell diameter. Effect
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Embodiment 1
[0015] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:
[0016] (1) The modification process of nanometer silicon dioxide: using n-octanol as a modifier, add 5g of silicon dioxide powder in the distillation bottle, then add 30ml of n-octanol, heat and reflux for 4h, and then separate the silicon dioxide, and extracted with acetone in a Soxhlet extractor for 8 hours, and finally the esterified silica was dried at 60°C for 12 hours;
[0017] (2) Composite process of foaming agent: Weigh 1g of foaming agent AC and dissolve it in 25ml of dimethyl sulfoxide (DMSO), weigh 1g of nano-silica modified in step (1), and mix the silica It is impregnated and compounded with foaming agent AC. After impregnated for 12 hours, it is vacuum-dried at 60°C for 12 hours to obtain a foaming agent product.
[0018] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier, an...
Embodiment 2
[0020] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:
[0021] (1) Modification process of nano-silicon dioxide: using n-octanol as modifier, add 8g of silica powder in the distillation bottle, then add 40ml of n-octanol, heat and reflux for 4.5h, and then separate the silica , and extracted with acetone in a Soxhlet extractor for 9 hours, and finally the esterified silica was dried at 65°C for 13 hours;
[0022] (2) Composite process of foaming agent: Weigh 1.5g of foaming agent AC and dissolve it in 27ml of dimethyl sulfoxide (DMSO), weigh 1.2g of nano-silica modified in step (1), and dilute Silicon oxide and foaming agent AC were impregnated and composited, and after immersion for 13 hours, vacuum-dried at 65° C. for 13 hours to obtain foaming agent products.
[0023] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier, and the polyethylene gl...
Embodiment 3
[0025] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:
[0026] (1) The modification process of nanometer silicon dioxide: using n-octanol as a modifier, add 10g of silicon dioxide powder in the distillation bottle, then add 45ml of n-octanol, heat and reflux for 5h, and then separate the silicon dioxide, and extracted with acetone in a Soxhlet extractor for 10 hours, and finally the esterified silica was dried at 70°C for 14 hours;
[0027] (2) Composite process of foaming agent: Weigh 2g of foaming agent AC and dissolve it in 30ml of dimethyl sulfoxide (DMSO), weigh 1.5g of nano-silica modified in step (1), and dissolve the Silicone and foaming agent AC are impregnated and composited, and after immersion for 14 hours, vacuum-dried at 70° C. for 15 hours to obtain foaming agent products.
[0028] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier,...
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