Composite functional master batch, film preparation material and application

Abstract

The invention provides a composite functional master batch, which is prepared from the following ingredients in percentage by mass: 0.2 to 40 percent of fibers, 0 to 30 percent of mica, 0.2 to 2 percent of coupling agents, 0.3 to 3.5 percent of internal lubricating agents, 0.3 to 3.5 percent of external lubricating agents, 0.01 to 0.2 percent of antioxidants, 3 to 12 percent of maleic anhydride grafting agents and 10 to 95 percent of carriers. The composite functional master batch disclosed by the invention is simple to prepare and convenient to store and transport, can be used for preparing a thin film with relatively good performance and relatively thin thickness, and is a film-grade master batch. The invention also provides application of the composite functional master batch.

Description

technical field [0001] The invention relates to the technical field of raw materials for waterproof membrane preparation, in particular to a composite functional masterbatch and its application. Background technique [0002] Waterproof membrane is a waterproof product made by impregnating asphalt or polymer waterproof material on the tire base, and it is provided to downstream customers in the form of membrane. It is mainly used in building roofs, walls, roads, tunnels, landfills, etc. It is the main barrier to ensure that buildings and structures prevent rainwater intrusion, groundwater and other water penetration. The performance of waterproof materials has a great impact on waterproof engineering. [0003] There are various defects in the existing waterproof roll material. For example, in the prior art, modified asphalt is used as the main waterproof layer, and non-woven fabric is added in the middle as the waterproof coiled material of the base layer. Although the modi...

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Problems solved by technology

Another example is the strong cross-membrane commonly used on the surface layer of waterproof membranes, which has poor thermal dimensional stability and high expansion rate, causing the waterproof membranes to easily fail to overlap; the fracture elongation is small, the membranes are easy to break, and it is easy to cause water leakage.

Because the strong cross film is combined with two layers of film, one is the cost of consumable glue, which is about 0.14 yuan per square meter; the other is delamination, that is, the two layers are not firmly bonded.

Ordinary polyethylene film (PE) has high elongation, but poor thermal dimensional stability, large stretching rate, and poor heat resistance, so it cannot be used on waterproof membranes

High-density polyethylene (HighDensity Polyethylene, referred to as "HDPE") is a highly crystalline, non-polar thermoplastic resin. The commonly used HDPE self-adhesive waterproof membrane for ordinary masks has many advantages of underground waterproofing, but its resistance Low tensile strength, dimensional stability, poor weather resistance

[0004] For example, the polyolefin waterproof base layer mentioned in the patent with application number CN201910118738.0 has good low-temperature bendability and good waterproof performance, but has poor thermal stability and the edges are easy to roll up.

[0005] Some existing composite masterbatches that can be used for the preparation of the intermediate film layer of waterproof coils have problems such as edge rolling, delamination between films, poor thermal dimensional stability, low elongation, and aging resistance, such as application number For CN201710918378.3, then, how to obtain a waterproof roll that can not only guarantee a large elongation, but also be tear-resistant, aging-resistant, have good dimensional stability, be difficult to shrink and deform, and have excellent waterproof performance without rolling or delamination material has been puzzling people in the field

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