Polyurethane modified asphalt waterproof roll and production method thereof

Abstract

The invention relates to a polyurethane modified asphalt waterproof roll. The polyurethane modified asphalt waterproof roll is of a five-layer structure which comprises, from top to bottom, a top isolating layer, an upper modified asphalt layer, a padding layer, a lower modified asphalt layer and a bottom isolating layer, wherein the upper modified asphalt layer and the lower modified asphalt layer are prepared from modified asphalt. The polyurethane modified asphalt waterproof roll is greatly improved in tearing strength, adhesion, water resistance, aging resistance and the like, has high elongation at break, and overcomes the disadvantages of tedious preparation, weak adhesion and the like of conventional waterproof rolls. A production method for the polyurethane modified asphalt waterproof roll is simple. As the polyurethane modified asphalt waterproof roll is applied to a building, a contact surface of the polyurethane modified asphalt waterproof roll and the base surface of the building has good bonding strength and waterproof effect, so the waterproof roll is effectively prevented from water seepage and water leakage.

Description

technical field [0001] The invention relates to a building waterproof material, in particular to a polyurethane modified asphalt waterproof coiled material and a production method thereof, belonging to the field of waterproof chemical materials. Background technique [0002] With the improvement of construction technology, the demand for waterproof materials for construction projects is also increasing, and the quality requirements are also getting higher and higher. With the progress of various engineering constructions, the problem of water seepage and leakage in roofs, floors, and basements has always troubled people. As a result, waterproof projects have emerged as the times require. Various waterproof materials emerge in endlessly. The waterproof industry is booming, and waterproof membranes are widely used in the construction industry. Among them, it is one of the important building materials. [0003] At present, there are three major series of waterproof coiled mate...

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Problems solved by technology

[0006] Although the above-mentioned two documents have modified the bitumen to obtain a waterproof membrane with better performance, they have not used fillers such as calcium carbonate, carbon powder and talcum when preparing modified bitumen. When the unmodified filler is used to prepare modified asphalt and filled in various polymers, there will be obvious disadvantages: first, the surface is hydrophilic and oleophobic, and the dispersibility in the polymer is poor; It has poor binding force with the polymer body and can only play a role in compatibilization

The surface of these unmodified fillers is hydrophilic and oleophobic, and has poor compatibility and dispersion with polymers. When used to prepare modified asphalt and then used to produce waterproof membranes, it will affect the performance of the product.

For example, when a high proportion of fillers such as calcium carbonate and talcum powder are used to fill asphalt, the performance of the polymer material will drop sharply, making it difficult to process and use the product

Moreover, the above-mentioned two documents mentioned above produce modified asphalt waterproofing membranes, which are relatively cumbersome.

[0007] At present, the tensile strength of ordinary modified asphalt coils is not high; the integrity of the laying is also poor; after construction, there is a great risk of leakage; Although the material has high strength, its bonding performance is poor, the coiled material and the base layer cannot be tightly bonded, and the production process is relatively cumbersome, and the tensile strength is low, the tear resistance is low, and the high temperature resistance and salt resistance are high. Poor, poor oxidation resistance, short life, difficult to adapt to the needs of various environments

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