Effect of different component ratios on the performance of water-based adhesives
Publish Time: 2024-12-03
Water-based adhesives are crucial materials in the production of children's card books, and their different component ratios profoundly affect the performance of adhesives.
As the core component of water-based adhesives, the ratio of polymer emulsion plays a key role in bonding strength. A higher ratio of polymer emulsion usually provides stronger bonding because it contains a large amount of high molecular polymers, which are intertwined and entangled with each other to form a strong adhesion layer on the surface of materials such as paper, tightly combining the various components of the card book. However, if the proportion of polymer emulsion is too high, the adhesive may become too viscous and the fluidity may deteriorate, resulting in uneven glue coating, which in turn affects the bonding effect and may increase costs.
The proportion of thickener affects the viscosity and rheology of the adhesive. The right amount of thickener can adjust the consistency of the adhesive so that it can better adhere to the surface of the adherend during the glue coating process and avoid flowing. However, if too much thickener is added, the adhesive will be too thick and difficult to apply. At the same time, it may reduce the flexibility of the adhesive, making it easy for the adhesive layer to crack when the card book is folded.
The content of defoamer should not be ignored. A small amount of defoamer helps to eliminate bubbles generated during the mixing and use of the adhesive to ensure the flatness and close contact of the bonding surface. If the defoamer ratio is not appropriate, either the bubbles cannot be effectively eliminated, resulting in gaps on the bonding surface and reduced bonding strength; or the defoamer is excessive, which may affect other properties of the adhesive, such as stability and bonding durability.
In addition, the proportion of some functional additives such as preservatives also has an impact. The appropriate proportion of preservatives can prevent the adhesive from deteriorating due to microbial growth during storage and use, and extend its shelf life. However, if too much preservative is added, it may have a negative impact on the environmental friendliness of the adhesive, and may even release trace amounts of harmful gases, endangering children's health.
In short, the proportion of each component in the water-based adhesive of children's card books needs to be carefully formulated. During the R&D and production process, we must fully consider the balance of various performance aspects such as bonding strength, flexibility, viscosity, defoaming effect and environmental protection. Through a large number of experiments and optimization, we can determine the most suitable ingredient ratio. Only in this way can we produce a water-based adhesive with excellent performance, safety and reliability, meet the strict requirements of children's card book production, and bring high-quality, safe and environmentally friendly reading products to children.
