Reasons for waterproofing polypropylene non-woven fabrics

Why is the thin waterproof polypropylene non-woven fabric waterproof? Let's first look at the characteristics of waterproof polypropylene:

1. Three-layer structure, surface enhancement

2. Core Layer - The main waterproof layer adopts linear low density polyethylene (LLDPE) with high branch ratio (more macromolecular side chains), which has good extensibility, water impermeability, softness, puncture resistance and low temperature resistance. .

3. The surface is polypropylene (polyester) non-woven fabric, which solves the problem of large linear expansion coefficient of polyethylene through compounding with the core layer. The roughness of the product surface is increased, the friction coefficient of the product is improved, the bonding problem of the composite coil is solved, and the cement bonding is realized.

Its structural characteristics:

It has strong impermeability, high tensile strength, good low temperature flexibility, small linear expansion coefficient, easy bonding, large friction coefficient, good stability, Non-toxic, strong deformation adaptability, wide adaptable temperature range, long service life and other good comprehensive technical performance. Polyethylene and polypropylene (polypropylene) are resistant to chemical stability, corrosion and mildew, and ozone, while polypropylene has good mechanical properties.

Its use characteristics:

1. The polymer waterproofing membrane belongs to the series of synthetic polymer waterproofing membranes. In addition to all the advantages of synthetic polymer membranes, its own The most prominent feature is the mesh structure on its surface, which makes it have its own unique performance - cement bonding.

2. Since the polymer composite coil can be directly bonded with cement, it is not affected by the moisture content of the base during the construction process, and can be constructed as long as there is no clear water. This is what other waterproofing membranes do not have.

3. Due to the rough surface and large friction coefficient of the polymer composite coil, it can be directly buried in the sand when it is applied in hydraulic engineering, and has sufficient stability.

4. Since the polymer composite coil can be directly bonded with the cement material during the solidification process, it can be directly designed in the structure of the cement material.