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Polyvinyl alcohol is a common synthetic resin widely used in fields such as textiles, construction, and packaging. Different types of polyvinyl alcohol have different properties and uses, so the selection needs to be based on specific needs. This article will introduce several common polyvinyl alcohol models and their differences to help readers better choose products that meet their needs

Let's learn about the basic properties of polyvinyl alcohol. Polyvinyl alcohol is a colorless and odorless crystalline substance, usually in the form of a white powder. It has high water solubility and viscosity, making it a good thickener and adhesive. The solubility and viscosity of polyvinyl alcohol increase with the increase of polymerization degree. Common types of polyvinyl alcohol include 18-88, 05-88, 20-98, etc

1. Polyvinyl alcohol model 18-88 

Polyvinyl alcohol model 18-88 has low polymerization degree and molecular weight, good solubility, and high viscosity. It is suitable for the dyeing, finishing, and bonding processing of textiles, and is commonly used in the fields of textile printing and dyeing auxiliaries, cellulose thickeners, and so on

2. Polyvinyl alcohol model 05-88 

Polyvinyl alcohol model 05-88 is a medium degree of polymerization polyvinyl alcohol with high molecular weight and viscosity. It is suitable for the bonding and modification treatment of building materials, and is commonly used as a reinforcing agent and adhesive for building materials such as cement, mortar, and tiles

3. Polyvinyl alcohol model 20-98 

Polyvinyl alcohol model 20-98 is a high degree of polymerization model of polyvinyl alcohol, with high molecular weight and viscosity. It is suitable for the adhesion and coating treatment of packaging materials, and is commonly used for the modification, reinforcement, and adhesive of packaging materials such as paper, cardboard, and plastic film

Based on the above introduction, we can see that there are differences in molecular weight, viscosity, and solubility among different types of polyvinyl alcohol. When selecting polyvinyl alcohol models, it is necessary to evaluate them based on specific application scenarios and requirements. Generally speaking, for scenarios that require good solubility and low viscosity, low degree of polymerization models can be chosen; For scenarios that require high strength and viscosity, models with high polymerization degree can be selected

In addition, factors such as cost and availability also need to be considered. Generally speaking, the price of polyvinyl alcohol increases with the increase of molecular weight, so it is necessary to choose the model based on budget and actual situation. At the same time, the supply of different types of polyvinyl alcohol in the market may also vary, and selection needs to be based on specific circumstances

In short, selecting the appropriate polyvinyl alcohol model is an important step in ensuring product performance and quality. By understanding the properties and uses of different types of polyvinyl alcohol and selecting based on actual needs, we can better meet the needs and improve production efficiency.