A kind of powder grinding aid, its preparation method and application

Abstract

The invention discloses a novel environmentally-friendly powder grinding aid as well as a preparation method and application thereof, and belongs to the technical field of powder grinding. The grinding aid comprises the following raw materials in parts by weight: 40-50 parts of diethanol monoisopropanolamine, 30-40 parts of hexadecanol ester, 10-15 parts of calcium lignosulfonate, 5-10 parts of ethylene glycol, 4-8 parts of hydroxyethyl methylcellulose, 8-12 parts of sodium hexametaphosphate and 2-5 parts of sodium polyacrylate. The calcium lignosulfonate has good dispersibility, so that the grinding efficiency can be improved, the machine-hour output is increased, the electricity consumption is lowered, a synergistic effect of raw material components can be also promoted, and the adaptability of the grinding aid to calcium carbonate is improved. The hexadecanol ester is applied to fusion of polyol and a lignin derivative, and high-adsorption strength dispersing agents, namely the sodium hexametaphosphate and the sodium polyacrylate, are contained, so that a phenomenon of powder agglomeration can be obviously solved, gradation of calcium carbonate particles is improved and the content of micropowder particles is increased.

Description

technical field

[0001] The invention belongs to the field of powder grinding, and in particular relates to a novel environment-friendly powder grinding aid, its preparation method and application. Background technique

[0002] Calcium carbonate is widely used in the manufacture of paper, rubber, paint, coatings, building materials and other products. It can improve the heat resistance, tear resistance, sound insulation performance of the product, and improve the strength and smoothness of the product. It is a The most commonly used filler.

[0003] Since the surface of calcium carbonate has a hydroxyl group with strong hydrophilicity, it presents strong alkalinity, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, and the direct application effect is not good. Therefore, it is generally necessary to modify calcium carbonate. sex.

[0004] Studies have shown that no matter adding a small amount of chemical substances in the process of dry gri...

Examples

Embodiment 1

[0022] A new type of environmentally friendly powder grinding aid, composed of the following raw materials: 40kg of diethanol monoisopropanolamine, 40kg of cetyl alcohol ester, 15kg of calcium lignosulfonate, 10kg of ethylene glycol, hydroxyethylmethyl Cellulose 8kg, sodium hexametaphosphate 12kg, sodium polyacrylate 5kg.

[0023] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0024] (1) Diethanol monoisopropanolamine, cetyl alcohol ester, and calcium lignosulfonate in the above parts by weight are added to the reaction kettle, mixed evenly, and then, 2 times the weight of the The water of above-mentioned mixed material, mixes evenly;

[0025] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 80°C, keep stirring for 30 minutes, cool down to room temperature, and adjust the pH value to 6.5 to prepare Get the finished product...

Embodiment 2

[0027] A new type of environmentally friendly powder grinding aid, consisting of the following raw materials: 50kg of diethanol monoisopropanolamine, 30kg of cetyl alcohol ester, 10kg of calcium lignosulfonate, 5kg of ethylene glycol, hydroxyethyl methyl Cellulose 4kg, sodium hexametaphosphate 8kg, sodium polyacrylate 2kg.

[0028] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0029] (1) Add diethanol monoisopropanolamine, cetyl alcohol ester and calcium lignosulfonate in the above parts by weight into the reaction kettle, mix well, and then add 1 times the weight of The water of above-mentioned mixed material, mixes evenly;

[0030] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 60°C, keep stirring for 60 minutes, cool down to room temperature, and adjust the pH value to 7.0 to prepare Get the finished product.

Embodiment 3

[0032] A new type of environmentally friendly powder grinding aid, consisting of the following raw materials: 45kg of diethanol monoisopropanolamine, 35kg of cetyl alcohol ester, 12kg of calcium lignosulfonate, 8kg of ethylene glycol, hydroxyethyl methyl Cellulose 5kg, sodium hexametaphosphate 10kg, sodium polyacrylate 3kg.

[0033] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0034] (1) Diethanol monoisopropanolamine, cetyl alcohol ester, and calcium lignosulfonate in the above parts by weight are added to the reaction kettle, mixed evenly, and then 1.5 times the weight of The water of above-mentioned mixed material, mixes evenly;

[0035] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 70°C, keep stirring for 45 minutes, cool down to room temperature, adjust the pH value to 7, and prepare Get the finished product.

technical field

[0001] The invention belongs to the field of powder grinding, and in particular relates to a novel environment-friendly powder grinding aid, its preparation method and application. Background technique

[0002] Calcium carbonate is widely used in the manufacture of paper, rubber, paint, coatings, building materials and other products. It can improve the heat resistance, tear resistance, sound insulation performance of the product, and improve the strength and smoothness of the product. It is a The most commonly used filler.

[0003] Since the surface of calcium carbonate has a hydroxyl group with strong hydrophilicity, it presents strong alkalinity, and it is easy to form aggregates, resulting in uneven dispersion in the polymer, and the direct application effect is not good. Therefore, it is generally necessary to modify calcium carbonate. sex.

[0004] Studies have shown that no matter adding a small amount of chemical substances in the process of dry gri...

Examples

Embodiment 1

[0022] A new type of environmentally friendly powder grinding aid, composed of the following raw materials: 40kg of diethanol monoisopropanolamine, 40kg of cetyl alcohol ester, 15kg of calcium lignosulfonate, 10kg of ethylene glycol, hydroxyethylmethyl Cellulose 8kg, sodium hexametaphosphate 12kg, sodium polyacrylate 5kg.

[0023] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0024] (1) Diethanol monoisopropanolamine, cetyl alcohol ester, and calcium lignosulfonate in the above parts by weight are added to the reaction kettle, mixed evenly, and then, 2 times the weight of the The water of above-mentioned mixed material, mixes evenly;

[0025] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 80°C, keep stirring for 30 minutes, cool down to room temperature, and adjust the pH value to 6.5 to prepare Get the finished product...

Embodiment 2

[0027] A new type of environmentally friendly powder grinding aid, consisting of the following raw materials: 50kg of diethanol monoisopropanolamine, 30kg of cetyl alcohol ester, 10kg of calcium lignosulfonate, 5kg of ethylene glycol, hydroxyethyl methyl Cellulose 4kg, sodium hexametaphosphate 8kg, sodium polyacrylate 2kg.

[0028] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0029] (1) Add diethanol monoisopropanolamine, cetyl alcohol ester and calcium lignosulfonate in the above parts by weight into the reaction kettle, mix well, and then add 1 times the weight of The water of above-mentioned mixed material, mixes evenly;

[0030] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 60°C, keep stirring for 60 minutes, cool down to room temperature, and adjust the pH value to 7.0 to prepare Get the finished product.

Embodiment 3

[0032] A new type of environmentally friendly powder grinding aid, consisting of the following raw materials: 45kg of diethanol monoisopropanolamine, 35kg of cetyl alcohol ester, 12kg of calcium lignosulfonate, 8kg of ethylene glycol, hydroxyethyl methyl Cellulose 5kg, sodium hexametaphosphate 10kg, sodium polyacrylate 3kg.

[0033] The preparation method of above-mentioned novel environment-friendly powder grinding aid comprises the steps:

[0034] (1) Diethanol monoisopropanolamine, cetyl alcohol ester, and calcium lignosulfonate in the above parts by weight are added to the reaction kettle, mixed evenly, and then 1.5 times the weight of The water of above-mentioned mixed material, mixes evenly;

[0035] (2) Add ethylene glycol, hydroxyethyl methylcellulose, sodium hexametaphosphate, and sodium polyacrylate into the reaction kettle, heat to 70°C, keep stirring for 45 minutes, cool down to room temperature, adjust the pH value to 7, and prepare Get the finished product.

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