A recyclable self-cleaning reflective polymer roofing waterproof membrane and its preparation method

Abstract

The invention relates to a recyclable self-cleaning reflective high polymer roof waterproof roll and a preparation method thereof.The waterproof roll is prepared from, by weight, 30-50 parts of SEBS thermoplastic elastomer, 10-30 parts of thermoplastic polyurethane, 3-8 parts of titanium dioxide, 2-5 parts of filling oil, 15-35 parts of hydrophobic silica, 0.1-0.5 part of ultraviolet-resistant agent, 0.1-0.5 part of light stabilizer and 0.1-0.3 part of antioxidant.No plasticizer is added into a formulation, and a co-extrusion process is not used for multilayer compositing, so that recycling, regeneration, environment protection and energy conservation are realized on the basis that good antifouling, self-cleaning, reflective, heat-insulating, weather-proof and waterproof functions are guaranteed.The preparation method is simple in process and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a waterproof coiled material, in particular to a recyclable self-cleaning reflective polymer roof waterproof coiled material and a preparation method thereof. Background technique [0002] Recently, due to changes in building design and the use of new building components, higher and higher requirements have been placed on roof waterproofing membranes. The "Twelfth Five-Year" Comprehensive Work Plan for Energy Conservation and Emission Reduction issued by the State Council in August 2011 requires reducing energy waste and reducing exhaust emissions, and regards building energy conservation as an important part of my country's energy strategy. The report of the 18th National Congress of the Communist Party of China puts forward for the first time "promoting green development, circular development, and low-carbon development" and "building a beautiful China". However, durin...

AI Technical Summary

Problems solved by technology

[0003] Existing functional polymer waterproof membranes, such as a building heat insulation waterproof membrane disclosed in a Chinese invention patent with the publication number CN 104553093A, adopts a PVC waterproof layer, and a large amount of plasticizer needs to be added in the preparation of the PVC membrane. Improve the flexibility of the coil, but because the plasticizer does not chemically react with the PVC polymer, it is easy to migrate and seep out and gasify during use. The volatilized plasticizer not only endangers human health and increases the risk of cancer, but also Directly shorten the useful life of the coil

The Chinese utility model patent with the authorized announcement number CN 202727448 U discloses a CPE self-adhesive composite waterproof membrane with a reflective heat insulation layer and a building thermal insulation waterproof membrane disclosed by the Chinese invention patent with the publication number CN 104553093A. The metal aluminum foil layer is used as the reflective insulation layer of the coil. The aluminum foil has high hardness and high tensile strength, but its tear strength is small, so it is easy to tear, especially in bad weather. It is most likely to be damaged; moreover, the aluminum foil itself is easily oxidized and the color becomes darker, and the color will fade due to wind friction, acid rain erosion, etc., and long-term use will gradually lose the reflective effect

The authorized announcement number is CN 202106601 U Chinese utility model patent discloses a high-strength antifouling self-cleaning waterproof coiled material, in which the PVDF protective coating layer is used as the self-cleaning layer to achieve the antifouling effect, but the PVDF coating layer on the surface of the coiled material and the lower surface There are big differences in the tensile strength, elongation at break and high and low temperature resistance of the PVC embryo film layer, which may cause the hollowing and cracking of the coating and the base surface after the alternation of seasons; at the same time, the smooth surface During the overlapping process of PVDF coating, whether it is bonding or welding, it will affect the lapping effect, and the weak lapping between the coils will directly cause water channeling and leakage

[0004] To sum up, although there are various self-cleaning and heat-insulating polymer coils in the prior art, these coils have unsatisfactory long-term anti-fouling effects, or the reflective heat-insulating layer is prone to failure, or multi-layer composites and complicated processes , or the construction is difficult, or the durability is poor, and these waterproof membranes cannot be recycled