Chemical Resistance of PP and PE

 

Polypropylene (PP) and high-density polyethylene (PE) are the raw materials used in our woven and knitted shade fabrics respectively. They are also widely used in everyday consumer products due to their durability. Similarly, Acadian’s fabrics are used in a variety of applications and environments. Thanks to relatively high melting points, the fabrics can withstand high temperatures. The fabrics can also withstand water and winds due to the strength of the individual threads and overall strength of a given fabric.

While polypropylene and polyethylene seem close to indestructible, it is important to note that some chemicals can cause early failure of the fabric. Therefore, it is important to know what substances may come in contact with the fabric. Our mill advised us that sulphur, chlorine, and iron can cause PP and PE to degrade. In fact, if these chemicals are used beyond the concentration reflected in our warranty (see below) it will void the warranty due to the effects the chemicals will have on the fabric.

While many people won’t be using sulphur, chlorine, or iron in their pure form directly on our fabrics, we feel it is important to point out that these chemicals can cause early failures. When installing or using our fabrics, you want to know what chemicals, or products containing chemicals, may be used on or near the fabric. For instance, some fungicides may contain chemicals that will cause PP to deteriorate quicker.

Acadian warranty statement for chemical concentrations related to PP woven shade:

Damages derived form the incidence on the article of phytosanitary products containing sulphur, chloride or iron. The analysis report of the claimed fabric will not show sulphur values over 2.000 ppm, chlorine values over 150 ppm and iron values over 30 ppm.

 

For more information, or if you have additional questions, please contact us.