Nowadays, there are many uneven waterproofing membranes in the building materials market, especially the huge market of SBS waterproofing membranes. In order to obtain high profits, manufacturers have repeatedly banned them. Let us teach you how to distinguish SBS waterproofing membranes. ? Panjin waterproof membrane

The identification of these two products can be carried out from two aspects: modified materials and carcass.

1. The sbs rubber in the modified material has excellent elastic recovery performance, and the inferior SBS waterproofing membrane is not good, so you can stretch a small piece of asphalt by hand and then let it go. The sbs modified asphalt can be stretched longer. And after letting go, it can be restored back, but the inferior SBS waterproofing membrane is much worse. The extraction method can also be used. According to the soluble content test method, the insoluble matter left after the sbs modified bitumen is extracted is a light-colored powder, and the insoluble matter left after the inferior SBS waterproofing membrane is extracted is black. Lumps, mainly reclaimed rubber powder, are not completely soluble in carbon tetrachloride.

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2. For the carcass, you can use the method of hand tearing. After the composite tire roll is torn, the cross-section has the ribs of the mesh cloth exposed, and there is no extensibility; after the sbs polyester tire roll is torn, the cross section is only polyester fiber, And the extensibility is very good; after the SBS glass fiber roll material is torn, the section has only glass fiber or glass fiber reinforcement with an interval of 2 cm, no elongation, and it is easy to tear. The above extraction method can also be used to check. After the extraction is complete, the carcass can be clearly judged. Or burn a small piece of coiled material with fire, the polyester tire will melt into a mass after burning, the glass fiber tire will be intact after burning, and the glass fiber mesh cloth will be intact after the polyester/cotton composite tire is burned.