Environment-friendly cement grinding aid and preparation method thereof
A cement grinding aid, an environmentally friendly technology, applied in the field of cement grinding aids, can solve the problems of non-environmental protection and green production, and achieve the effects of high early strength, improved cement strength, and strong adaptability
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Embodiment 1
[0024] An environment-friendly cement grinding aid and its preparation method. The following parts are taken: 20 parts of wheatgrass alkali lignin, 1 part of oxidant, 1 part of polar additive, 1 part of polyglycerol fatty ester, 6 parts of polyglycerol, glycerol-like 6 parts, 1 part polyether polyhydroxy tertiary amine, 5 parts ethylene glycol, 2 parts propylene glycol, 1 part sodium hydroxide, 15 parts water.
[0025] Further, the oxidizing agent is ammonium persulfate.
[0026] Further, the polar additives are polyvinyl alcohol, sodium carboxymethylcellulose and anilinomethyltriethoxysilane.
[0027] The preparation method of environment-friendly cement grinding aid comprises the following steps:
[0028] Step 1: Dividing wheatgrass alkali lignin into different molecular weight fractions by means of ultrafiltration purification;
[0029] Step 2: Add the wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, add an oxid...
Embodiment 2
[0038] An environment-friendly cement grinding aid and its preparation method, the following parts are taken: 25 parts of wheatgrass alkali lignin, 2 parts of oxidizing agent, 2 parts of polar additive, 10 parts of polyglycerol fatty ester, 8 parts of polyglycerol, glycerol-like 8 parts, polyether polyhydroxy tertiary amine 2 parts, ethylene glycol 7 parts, propylene glycol 3 parts, sodium hydroxide 3 parts, water 20 parts.
[0039] Further, the oxidizing agent is ammonium persulfate.
[0040] Further, the polar additives are polyvinyl alcohol, sodium carboxymethylcellulose and anilaminomethyl triethoxy.
[0041] The preparation method of environment-friendly cement grinding aid comprises the following steps:
[0042] Step 1: Dividing wheatgrass alkali lignin into different molecular weight fractions by means of ultrafiltration purification;
[0043] Step 2: Add wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, add ...
Embodiment 3
[0052] An environment-friendly cement grinding aid and its preparation method. The following parts are taken: 30 parts of wheatgrass alkali lignin, 3 parts of oxidizing agent, 3 parts of polar additive, 12 parts of polyglycerol fatty ester, 10 parts of polyglycerol, glycerol-like 10 parts, polyether polyhydroxy tertiary amine 4 parts, ethylene glycol 10 parts, propylene glycol 6 parts, sodium hydroxide 4 parts, water 35 parts.
[0053] Further, the oxidizing agent is perhydrogen peroxide and sodium hypochlorite.
[0054] Further, the polar additives are lactic acid, sodium phosphate and sodium gluconate.
[0055] The preparation method of environment-friendly cement grinding aid comprises the following steps:
[0056] Step 1: Dividing wheatgrass alkali lignin into different molecular weight fractions by means of ultrafiltration purification;
[0057] Step 2: Add the wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, ...
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