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[Chemical Knowledge]：Properties and uses of leather pastes

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Leather pulp has important properties and uses in the field of chemical production raw materials. In this paper, the properties, preparation methods and application fields of leather pulp will be discussed in detail in order to deepen the understanding of this important chemical product.

1. the nature of leather slurry

leather slurry is a kind of chemical raw material used in leather processing, mainly plays the role of filling, coating and modification. Its properties mainly include the following aspects:

1. Viscosity: The viscosity of leather slurry is a key factor affecting its coating performance and processing performance. The slurry with proper viscosity can be evenly applied to the leather surface to form a good coating.
2. pH value: The pH value of the leather slurry has an important influence on its stability and compatibility with leather. In general, neutral or slightly acidic slurries are less damaging to leather.
3. Film-forming: The leather slurry should have good film-forming properties after drying, which can provide leather strength and abrasion resistance.
4. Water resistance: The leather slurry should have a certain degree of water resistance to prevent moisture from penetrating into the coating and affecting the service life of the leather. The preparation method of

2. leather slurry
The preparation method of
leather slurry mainly includes physical method and chemical method.

1. physical method: through grinding, stirring and other physical ways to mix the raw materials evenly, prepared into a slurry. This method is simple and easy, but the product performance is relatively poor.
2. Chemical method: The raw materials are converted into the desired slurry by chemical reaction. This method can obtain products with excellent performance, but the process is complicated and the reaction conditions need to be strictly controlled.

3. The application field of leather slurry

leather slurry has a wide range of applications in the leather processing process, mainly used in the following aspects:

1. Filler: Leather slurry can be used as a filler to improve leather The thickness and feel.
2. Coating agent: apply the leather slurry on the surface of the leather to form a uniform and dense coating to improve the abrasion resistance, water resistance and pollution resistance of the leather.
3. Modifier: Some ingredients in leather slurry can change the nature of leather surface and improve the softness, toughness and gloss of leather.

4. common leather slurry types

1. Acrylic slurry: Acrylic slurry has excellent film-forming, water resistance and weather resistance, and is one of the commonly used leather slurries.
2. polyurethane slurry: polyurethane slurry has high strength and wear resistance, suitable for high-grade leather processing.
3. Collagen slurry: Collagen slurry has good biocompatibility and air permeability, and can be used to make eco-friendly leather products.

5. summary

leather pulp as an important product in the field of chemical production raw materials, has a wide range of applications. Through the in-depth understanding of the nature, preparation method and application field of leather pulp, we can better select and use leather pulp, and improve the quality and added value of leather products. At the same time, with the continuous development of science and technology, the development and application of new leather pulp will also bring more possibilities and innovations to the leather processing industry.

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