Asphalt modified waterproof rolled material

Abstract

The invention provides an asphalt modified waterproof rolled material, which comprises a tire base, an asphalt layer dipped on the tire base, an isolation material, and a thermoplastic polyurethane (IPU), wherein the asphalt layer comprises petroleum asphalt, 46# machine oil, mountain flour and thermoplastic styrene-butadiene rubber (SBS); and the asphalt modified waterproof rolled material comprises the following components in percentage by mass: 40 to 60 percent of petroleum asphalt, 6 to 10 percent of 46# machine oil, 2 to 4 percent of SBS, 8 to 10 percent of IPU and 25 to 35 percent of mountain flour. Compared with the common SBS type asphalt modified rolled material, the asphalt modified waterproof rolled material has excellent comprehensive physical performance.

Description

technical field [0001] The invention relates to the field of building waterproof coiled materials, in particular to an asphalt-modified waterproof coiled material comprising a tire base and an asphalt waterproof layer. Background technique [0002] Waterproof membrane is mainly used in building walls, roofs, tunnels, roads, landfills, etc., to resist external rainwater and groundwater leakage, a flexible building material product that can be rolled into rolls, as an engineering basis There is no leakage connection with the building, which is the waterproof barrier of the whole project. [0003] The current waterproof membrane is mainly bituminous waterproof membrane, including a base made of polyester felt, glass fiber felt or glass fiber reinforced polyester felt, an asphalt layer dipped on the surface of the base, and the isolation of the upper and lower surfaces. Material layer composition. Among them, the change of the composition of the asphalt layer will greatly affe...

AI Technical Summary

Problems solved by technology

For the current modified asphalt waterproofing membrane, the main raw material in the asphalt layer is asphalt, and a relatively large amount of SBS (thermoplastic styrene-butadiene rubber) is used as the basic component, and its content is about 10%. On the one hand, the tire base is non-combustible at about 100°C, and the asphalt does not flow or drop; on the low-temperature flexibility, it remains low-temperature flexibility at about -25°C; the tensile strength is 350N / 50mm-900N / 50mm; In the environment, it is still difficult to resist. For example, under the influence of colder air in the north, the temperature may be lower than minus 30°C, and the coil is easy to be brittle. In places close to heat treatment equipment such as boilers, the local ambient temperature may be higher than 100°C. In addition, during the dip-coating process of asphalt layer materials, SBS-type modified asphalt has poor fluidity in the molten dip-coating state at about 190°C, which is not conducive to uniform and smooth dip-coating on the tire base. base surface; therefore, the current SBS type modified bitumen waterproofing membrane still needs to be improved

Images