Small non-woven fabric? In fact, it can be effective in the waterproof construction of paints!

In the waterproof construction of the home, a small object that is inconspicuous - non-woven fabric is often used.

Why use non-woven fabrics? What is the use of non-woven fabrics for? Today, let's take a look at this seemingly insignificant gadget from the beginning.

Non-woven fabric refers to a non-woven fabric, or non-woven fabric. It is a kind of fabric which does not need to be spun woven fabric, but the woven short fibers or filaments are oriented or randomly arranged to form a web structure, and then reinforced by mechanical, thermal bonding or chemical methods. It has the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low in price and recyclable.

Glass fiber mesh What is the effect of non-woven fabric?

Its moisture resistance, breathability and flexibility make the non-woven fabric tightly bondable with waterproof coatings. Together, the more important effect of non-woven fabrics on waterproofing is to enhance the effect and resist cracking.

How to resist cracking? For example, when we are decorating, when there are fine cracks in the wall, the paint master will inform us that it is necessary to hang the net to solve it. This net is a fiberglass mesh cloth, which is used to resist concrete and putty shortening. Rally. Similarly, the non-woven fabric used in the waterproof construction process is also used as a reinforcement to enhance the tensile properties of the coating, so that the waterproof coating forms a whole and thus does not leak water. Use non-woven fabric to strengthen the yin and yang corners. Why does the concrete crack? The fundamental effect of the non-woven fabric in waterproof construction is clear. With the energy of breaking the bottom of the casserole, let us talk about why the concrete will crack. Where did the crack come from? We know that when building a house. In order to avoid cracking of concrete, steel bars are added to withstand the strong pulling force brought about by the shrinkage of concrete. However, the steel bar does not completely offset the tensile force caused by the concrete, so it will still crack. Concrete cracking is a normal phenomenon, because concrete is to work with cracks, and there are many reasons for concrete cracking, so I won't go into details here. “One cloth and three coatings” process method Concrete will crack, and there are many fine holes in the center of the concrete. Water will leak along these holes and cracks, so there is a saying that “water is pervasive”. In order to make the waterproof coating better able to withstand the invasion of water, the smart waterproof person invented the waterproof coating, and in order to better exert the tensile crack resistance of the waterproof coating, the non-woven fabric was added as reinforcement. Therefore, we have the common techniques of “one cloth and three coatings” and “two cloths and five coatings”.