Preparation method and application of carboxymethylcellulose sodium thickening rheology agent for dry powder putty

Abstract

The invention discloses a preparation method of a sodium carboxymethylcellulose thickening rheological agent for dry powder putty. With fibril as a raw material, the preparation method comprises the following four procedures: (A) pretreatment: grinding fibril, and preparing an alkalizer and a chloroacetic acid ethanol water solution; (B) alkalization: adding flocculent fibril into a kneading reactor, spraying the alkalizer to carry out alkalization, and spraying the chloroacetic acid ethanol water solution and acidy substances to react; (C) etherification: conveying the mixture to an etherification reactor, and carrying out etherification reactor; and (D) aftertreatment: drying, grinding, mixing, sieving, receiving and packaging products, so as to obtain a finished product. The sodium carboxymethylcellulose thickening rheological agent prepared by virtue of the preparation method is high in dissolving speed, and the viscosity, the consistency coefficient and the liquidity index are very applicable to the dry powder putty, so that the dry powder putty is light and rapid, is not sticky and greasy and does not sag in the scraping process, the scraping performance is effectively improved, the scraping efficiency is improved, and the labor intensity of workers is reduced.

Description

technical field

[0001] The invention relates to a thickening rheological agent, in particular to a preparation method and application of a thickening rheological agent for dry powder putty. Background technique

[0002] Dry powder putty is a kind of building decoration material, which is used for repairing and leveling building walls. Due to its convenient use, it has developed rapidly in recent years. Dry powder putty is mainly composed of inorganic bonding materials, inorganic fillers and other fine chemical additives. Among them, the commonly used inorganic bonding materials include gypsum, cement, lime calcium powder, etc., and the general addition amount is 20-30%, which can provide bonding and improve the surface strength of dry powder putty; commonly used inorganic fillers usually include various stone powders , modified stone powder, etc., which account for 70-80% of the entire dry powder putty, and are the main materials for dry powder putty filling; commonly used ...

Examples

Embodiment 1

[0032] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0033] A. Pretreatment

[0034] 100 parts of fibrils are pulverized into flocs for later use;

[0035] Mix 95 parts of liquid caustic soda with a mass fraction of 50% and 185 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0036] Dissolve 53 parts of solid chloroacetic acid with a mass fraction of 97.5% in 23 parts of ethanol solution with a volume fraction of 92% to obtain an aqueous solution of chloroacetic acid ethanol with a mass fraction of 70%, cool to 24°C, and set aside;

[0037] B. Alkalinization

[0038] Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the spraying time of the alkalizing agent is 25 minutes; after the alkali alcohol spraying is completed, stir for 35 minutes for alk...

Embodiment 2

[0048] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0049] A. Pretreatment

[0050] 100 parts of fibrils are pulverized into flocs for later use;

[0051] Mix 92 parts of liquid caustic soda with a mass fraction of 50% and 200 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0052] Dissolve 51 parts of solid chloroacetic acid with a mass fraction of 97.5% in 21 parts of ethanol solution with a volume fraction of 92% to obtain a chloroacetic acid ethanol aqueous solution with a mass fraction of 70.8%, cool to 22°C, and set aside;

[0053] B. Alkalinization

[0054]Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the alkalizing agent spray time is 30 minutes; after the alkali alcohol spraying, stir for 30 minutes for alkalization Reaction, alkal...

Embodiment 3

[0064] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0065] A. Pretreatment

[0066] 100 parts of fibrils are pulverized into flocs for later use;

[0067] Mix 90 parts of liquid alkali with a mass fraction of 50% and 200 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0068] Dissolve 50 parts of solid chloroacetic acid with a mass fraction of 97.5% in 22 parts of ethanol solution with a volume fraction of 92% to obtain an aqueous solution of chloroacetic acid ethanol with a mass fraction of 69.5%, cool to 20°C, and set aside;

[0069] B. Alkalinization

[0070] Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the spraying time of the alkalizing agent is 25 minutes; after the alkali alcohol spraying is completed, stir for 25 minutes for alkaliz...

technical field

[0001] The invention relates to a thickening rheological agent, in particular to a preparation method and application of a thickening rheological agent for dry powder putty. Background technique

[0002] Dry powder putty is a kind of building decoration material, which is used for repairing and leveling building walls. Due to its convenient use, it has developed rapidly in recent years. Dry powder putty is mainly composed of inorganic bonding materials, inorganic fillers and other fine chemical additives. Among them, the commonly used inorganic bonding materials include gypsum, cement, lime calcium powder, etc., and the general addition amount is 20-30%, which can provide bonding and improve the surface strength of dry powder putty; commonly used inorganic fillers usually include various stone powders , modified stone powder, etc., which account for 70-80% of the entire dry powder putty, and are the main materials for dry powder putty filling; commonly used ...

Examples

Embodiment 1

[0032] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0033] A. Pretreatment

[0034] 100 parts of fibrils are pulverized into flocs for later use;

[0035] Mix 95 parts of liquid caustic soda with a mass fraction of 50% and 185 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0036] Dissolve 53 parts of solid chloroacetic acid with a mass fraction of 97.5% in 23 parts of ethanol solution with a volume fraction of 92% to obtain an aqueous solution of chloroacetic acid ethanol with a mass fraction of 70%, cool to 24°C, and set aside;

[0037] B. Alkalinization

[0038] Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the spraying time of the alkalizing agent is 25 minutes; after the alkali alcohol spraying is completed, stir for 35 minutes for alk...

Embodiment 2

[0048] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0049] A. Pretreatment

[0050] 100 parts of fibrils are pulverized into flocs for later use;

[0051] Mix 92 parts of liquid caustic soda with a mass fraction of 50% and 200 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0052] Dissolve 51 parts of solid chloroacetic acid with a mass fraction of 97.5% in 21 parts of ethanol solution with a volume fraction of 92% to obtain a chloroacetic acid ethanol aqueous solution with a mass fraction of 70.8%, cool to 22°C, and set aside;

[0053] B. Alkalinization

[0054]Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the alkalizing agent spray time is 30 minutes; after the alkali alcohol spraying, stir for 30 minutes for alkalization Reaction, alkal...

Embodiment 3

[0064] A dry powder putty sodium carboxymethylcellulose thickening rheology agent, its preparation method is:

[0065] A. Pretreatment

[0066] 100 parts of fibrils are pulverized into flocs for later use;

[0067] Mix 90 parts of liquid alkali with a mass fraction of 50% and 200 parts of ethanol with a volume fraction of 89% to form an alkalizing agent, and cool it to 25°C for use;

[0068] Dissolve 50 parts of solid chloroacetic acid with a mass fraction of 97.5% in 22 parts of ethanol solution with a volume fraction of 92% to obtain an aqueous solution of chloroacetic acid ethanol with a mass fraction of 69.5%, cool to 20°C, and set aside;

[0069] B. Alkalinization

[0070] Add the flocculent fibrils into the kneading reactor, and spray the alkalizing agent at the same time; the addition time of the flocculent fibrils is 20 minutes, and the spraying time of the alkalizing agent is 25 minutes; after the alkali alcohol spraying is completed, stir for 25 minutes for alkaliz...

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