What is the difference between cotton canvas and polyester canvas?

What is the difference between cotton canvas and polyester canvas?

1. Cotton canvas is a thicker cotton fabric or linen fabric. After dyeing, it can also be used as fabric for shoes, travel bags, backpacks, etc. In addition, there are rubber canvas, shielding canvas for fire protection and radiation protection, and canvas for paper machines. But it is rarely used in situations where rain protection requirements are relatively high.

2. Polyester canvas: high strength, good impact resistance, heat resistance, corrosion resistance, acid and alkali resistance, very good light resistance (second only to acrylic), 60-70% strength retention after 1000 hours of exposure. Polyester waterproof canvas is also called silicone waterproof canvas. Because it has been treated with silicone (fluorine) waterproofing, it has super waterproof properties and is the main fabric for tents. The disadvantage is that the silicone waterproof coating will become waterproof after being washed away by rain and snow. The effect will become worse and worse.