Sản phẩm phenoxone

Plastic rubber

Current Location： Home > News > Chemical Knowledge > The difference and selection of polyvinyl alcohol models

[Chemical Knowledge]：The difference and selection of polyvinyl alcohol models

Read： 1044 Time：17months ago Source：Transform the World with Simplicity

Polyvinyl alcohol is a common synthetic resin, which is widely used in textile, construction, packaging and other fields. Different types of polyvinyl alcohol have different properties and uses, so the selection needs to be judged according to specific needs. This article will introduce several common polyvinyl alcohol models and the differences between them to help readers better choose products that suit their needs.

us to understand the basic properties of polyvinyl alcohol. Polyvinyl alcohol is colorless, odorless crystals, usually white powder. It has high water solubility and viscosity, and is a good thickener and adhesive. The solubility and viscosity of polyvinyl alcohol increase with the increase of the degree of polymerization, and the common polyvinyl alcohol models are 18-88, 05-88, 20-98, etc.

1. polyvinyl alcohol model 18-88

polyvinyl alcohol model 18-88 has a lower degree of polymerization and molecular weight, better solubility, a higher viscosity. It is suitable for textile dyeing and finishing and bonding processing, commonly used in textile printing and dyeing auxiliaries, cellulose thickeners and other fields.

2. Polyvinyl alcohol model 05-88

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

3. Polyvinyl alcohol model 20-98

Polyvinyl alcohol model 20-98 is a high degree of polymerization model of polyvinyl alcohol, with higher molecular weight and viscosity. It is suitable for the bonding and coating treatment of packaging materials, and is often used in the modification of paper, cardboard, plastic film and other packaging materials.

According to the above introduction, we can see that different types of polyvinyl alcohol have differences in molecular weight, viscosity and solubility. When choosing a polyvinyl alcohol model, it needs to be evaluated according to specific application scenarios and needs. In general, for scenarios requiring better solubility and low viscosity, a model with a low degree of polymerization can be selected; for scenarios requiring higher strength and viscosity, a model with a high degree of polymerization can be selected.

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

In short, choosing the right polyvinyl alcohol model is an important link to ensure product performance and quality. By understanding the nature and use of different types of polyvinyl alcohol, combined with actual needs to choose, we can better meet the needs and improve production efficiency.