Functional use of water-based adhesive in automotive interior adhesive process

The difference between oil-based adhesives and water-based adhesives lies in the difference of diluents. Compared with water-based and solvent-based systems, the environmental friendliness is better. Easier viscosity adjustment; Including the applicable period, bond strength and solvent type of the same; Of course, the safety in the storage and transportation process, as well as the use of transportation, are the advantages of water-based system.

Are water-based adhesives widely used in automotive interiors?

More and more automotive interior factories in the use of water-based adhesives, the growth trend is obvious, whether from the performance or construction, water-based adhesives can be successfully used, if it is to say the shortcomings of drying speed may also have some gap with solvent. Because there are many technologies for water-based adhesives, such as acrylic type, EVA type, polyurethane system, one component or two component.

What are the application range of water-based adhesive?

The application range of water-based adhesive is very wide, including automobile, pressure sensitive adhesive is the application range of water-based adhesive. Whether the material has limitations depends on what kind of performance indicators we need to achieve. For example, when we need low temperature performance, for example, when there are some requirements for tensile strength and bond strength, polyurethane may be suitable.

What are the applications of waterborne polyurethane adhesive in automotive interior?

Waterborne polyurethane glues not only reduce VOC emissions, but also provide the same performance as solvent-based systems. To name a few examples, polyurethane adhesives have been well used in cockpit control surfaces, door panels, ceiling and so on.

Many automotive interiors use polypropylene PP material. What are the solutions for PP material?

PP material is difficult to achieve adhesion of a material, like our coating industry in the application of pp material, the application of glue in pp material also needs to be treated on the substrate, such as flame treatment or arc treatment, so that the treated material can be better application of water-based glue. Now the effective solution is to brush Jiongsheng PP primer between the substrate and glue, improve the bonding between PP substrate and glue, prevent the problem of degumming.

The adhesive force range of water-based adhesive, and the requirements for the substrate?

Basically the bond strength, bond strength can be done and solvent – based system to do the same. As for the requirements for the substrate, because the surface tension of water is relatively large, the requirements for the substrate first of all, the substrate should be clean, without any grease and pollutants. For some substrates with very low surface energy, we may also carry out surface treatment on the substrates, such as pp materials, we may do flame or electric treatment. If there is a rigorous durability test, the durability requirements of the environment can be met through the selection of materials and adjustment of the formula, and the performance range of the two-component solvent-based system can be reached.

Can water-based adhesives be used for metal materials?

Water-based adhesives can be used to bond metal materials, with water-based polyurethane to bond metal materials.
The viscosity of the water-based adhesive does not vary with the molecular weight of the polymer, so it can make the polymer polymer quantization to improve its cohesion strength, but the viscosity is generally lower than the solvent-based, but when the dispersion particle size is small, the viscosity of the water-based adhesive increases. In terms of drying than solvent type slower, but easy to deploy, and easy to clean up, non-combustible, environmental protection.