Application of Carboxymethyl Cellulose Sodium as Water Retaining Agent in Coatings

1. What are the applications of CMC sodium carboxymethyl cellulose as a water retaining agent in coatings?

CMC sodium carboxymethyl cellulose is famous for its wide range of performance advantages, so it has become a common item in various industries and has been widely used. Among them, this product is widely used in coatings as a water-retaining agent, which not only improves the product quality of coatings, but also provides convenience for our use, so we need to have a detailed understanding of its specific application for subsequent operations.

CMC carboxymethyl cellulose is used as a water-retaining agent for coatings. Sodium carboxymethyl cellulose can control and adjust the rheology of coatings, improve the water retention value of coatings, and prevent the migration of water-soluble adhesives; coupled with its excellent film-forming properties, it makes coatings special suitable for film transfer coating and knife coating in size press. It is more conducive to overcoming the scratches caused by metering rods or scrapers, making the surface of the coating appear smooth, uniform and smooth, avoiding the phenomenon of "orange peel", and endowing the coating with good optical properties, opacity, sufficient surface strength and good K&N value.

2. CMC sodium carboxymethyl cellulose is used as an auxiliary adhesive in the paper industry

CMC sodium carboxymethyl cellulose is also widely used as an auxiliary adhesive in the coating operation of the paper industry. Sodium carboxymethyl cellulose has good cohesive force.

Each part of sodium carboxymethyl cellulose can replace 3-4 parts of modified starch or soybean casein, and 1.5-2.0 parts of latex, which can reduce the total amount of glue and help increase the solid content of the coating.

Because sodium carboxymethyl cellulose has a rigid cellulose backbone and has a large hydration volume in colloidal paints, it is naturally considered as a thickener for paints.

As a thickener, cellulose polymer can affect the flocculation state of pigment particles, thereby affecting the coating structure and coating rheology, and the coagulation between pigment particles depends on the interaction between various components in the coating, such as pigments and adhesives. action behavior.

That is, the association phenomenon between particles. More importantly, the adsorption of sodium carboxymethyl cellulose in the paint greatly affects the structure of the paint and the colloidal binding force of the paint.

To sum up, sodium carboxymethyl cellulose, as a water-retaining agent in paint, can increase the smoothness, flatness, and opacity of the product, thereby improving the performance and construction quality of the paint.

Not only that, sodium carboxymethyl cellulose can also be used as a thickener and adhesive in different coatings, so it is widely used.

Jining Fortune Biotech Co., Ltd. as the world's leading supplier and manufacturer of sodium carboxymethylcellulose products, has a particularly deep understanding and strong technical force. Welcome to inquire!