Changes in glass yarn after exposure to water or moisture

glass yarn must avoid being soaked in water and damp during transportation and storage. So what changes will be made after these situations occur? The following conclusions are drawn based on some experiments.

1. Softening, this is a change that occurs in most products. After technical personnel explained, the shape, softness and hardness of these products are all provided by the glue on the surface. After being exposed to water or moisture, the condensed and dry glue on the surface will absorb water, which will reduce the cohesion of the warp and weft yarns and the support provided to the Fiber Glass monofilaments, causing the overall design of the product to become soft.
2. Hardening, this happens less frequently. The technician explained that the surface of this series of products is emulsion, and after being soaked in water and damp, it is completely dry and dry in a very short time. This is equivalent to setting and baking again, making the product more beautiful. Make it hard and stiff.
The quality of mesh fabrics varies greatly, and even products of the same weight and specifications have significant differences in quality. Product quality can be roughly judged from the feel, which is also one of the simplest and most effective methods.
Judging from the feel can be divided into two points: whether it is prickly and softness. Generally speaking, when a newly made product is touched by hand, if it feels prickly, the quality of the product is worse than that of a non-prickly product; if it feels soft, it is generally a high-quality product. This has its own basis.
The surface of the glass yarn is coated with two kinds of glue: urea-formaldehyde glue and polymer alkali-resistant emulsion. The relative quality of the latter is far higher than that of the former, and after coating and baking, the emulsion product feels smooth and soft in texture; the urea glue product feels rough, prickly and hard in texture.