Analysis of the reasons for poor waterproofing effect

When the factory performs waterproofing processing, sometimes the processing effect is not ideal, so what is the reason? How to prevent and treat it?

The main reasons are:

Fabric problems: The cloth surface is not cleaned sufficiently after pre-treatment or dyeing, and there are additive residues on the cloth surface.

Problems with working fluid: Dosage problem, the concentration of wet cloth should be higher than that of dry cloth; stability, whether there is hydrophilicity or the compounding of anionic additives affects its waterproof effect; whether the pH value is reasonable, the potential of the fabric Affected by the pH value of the solution, attention should be paid to adjusting the reasonable pH value.

Liquid-carrying rate on the fabric surface: Too fast setting speed and poor permeability can easily lead to insufficient liquid-carrying rate on the fabric surface, resulting in poor waterproofing effect. Therefore, the appropriate working fluid concentration and fabric should be selected based on laboratory samples before using on the large machine. Fluid face rate.

Processing conditions are not in place: improper selection of waterproofing agent, improper selection of baking temperature or time results in unsatisfactory results. Generally, the surface temperature of fabrics for waterproofing processing needs to be above 140 degrees to prevent the performance of the waterproofing agent from not fully exerting itself, thereby achieving the ideal Waterproof effect.