A modified lignosulfonate water reducer and its preparation method
A technology of lignosulfonate and water-reducing agent, applied in the field of water-reducing agent, can solve the problems of poor bubble quality, concrete slump, bleeding phenomenon, etc. The effect of retardation and air entrainment
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Embodiment 1
[0029] A modified lignin sulfonate water water, including: 50g of sugarcane slag, 60g of formic acid solution, 60g of chloroacetic acid solution, tea polyphenol 8g, betaine 4g, methacrylate 0.6 g, sulfonating agent 7g;
[0030] The formic acid solution has a mass concentration of 45%;
[0031] The chloracetic acid solution has a mass concentration of 25%;
[0032] The sulfonation agent is sodium hydroxypropyl sulfonate;
[0033] The preparation method of the modified lignin sulfonic acid salt suction agent includes the steps of:
[0034] S1 once cooking: After mixing the sugarcane slag with the chloroacetic acid solution, the temperature is concentrated in a temperature of 95 ° C for 15 min, fell to normal temperature, filtration, and solid form A;
[0035] S2 2. After mixing the solid matter A and the formation of the formic acid, methyl methacrylate, the temperature is concentrated under temperature to concentrate 20 min, fell to normal temperature, filtration, and solid form B;...
Embodiment 2
[0043] A modified lignin sulfonic acid salt water repellent, including: 40g of a solid, 40g of formic acid solution, 40g of chloroacetic acid solution, 5 g of tea polyphenol, betaine 1g, methyl methacrylate 0.2 g, sulfonating agent 2g;
[0044] The formic acid solution has a mass concentration of 40%;
[0045] The chloracetic acid solution has a mass concentration of 20%;
[0046] The sulfonation agent is sodium hydroxymethylsulfonate, sodium hydroxyethylsulfonate, sodium hydroxypropyl sulfonate, sodium hydroxylasion, sodium hydroxybutylsulfonate;
[0047] The preparation method of the modified lignin sulfonic acid salt suction agent includes the steps of:
[0048] S1 once, after mixing the sugar canesets and chloroacetic acid solution, in the closed environment of 85 ° C for 10 min, fell to normal temperature, filtration, and solid form A;
[0049] S2 2 Cooking: After mixing the solid matter A with a formic acid solution, methyl methacrylate, the temperature is concentrated under...
Embodiment 3
[0057] A modified lignin sulfonic acid salt water-water, including: sugar caneseed 40g, formic acid solution 55g, chloroacetic acid solution 50g, tea polyphenol 7g, betaine 2g, methyl methacrylate 0.4 g, sulfonating agent 5g;
[0058] The formic acid solution has a mass concentration of 42%;
[0059] The chloracetic acid solution has a mass concentration of 24%;
[0060] The sulfonation agent is a mixture of sodium hydroxymethylsulfonate, sodium hydroxyethylsulfonate, sodium hydroxylane sulfonate, sodium hydroxybutylsulfonate;
[0061] The preparation method of the modified lignin sulfonic acid salt suction agent includes the steps of:
[0062] S1 once, after mixing the sugar canesets with chloroacetic acid solution, in a closed environment at a temperature of 90 ° C for 12min, fell to normal temperature, filtration, solid form A;
[0063] S2 2 Cooking: After mixing the solid matter A with the formate of the formic acid, methyl methacrylate, the temperature is concentrated under t...
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