Coating and preparation method thereof as well as modified asphalt waterproof roll

Abstract

The invention discloses a coating and a preparation method thereof as well as a modified asphalt waterproof roll. The coating is prepared from the following components in parts by weight: 10 to 50 parts of high-grade straight-run distillation petroleum asphalt, 10 to 50 parts of low-grade matrix asphalt, 5 to 40 parts of a macromolecular sizing material, 5 to 50 parts of a rubber powder sizing material, 1 to 20 parts of tackifying resin, 0.0001 to 0.02 part of graphene and 5 to 40 parts of filler. According to the coating, straight-run distillation asphalt with a relatively high grade is refined by adopting aryl hydrocarbon heavy oil and is used for pre-swelling difficult-to-swell macromolecular materials including SBS (styrene-butadiene-styrene block copolymer), rubber powder and the like. The graphene is added and high-thermal conductivity of the graphene is utilized so that the temperature is more uniform in a coating processing process and the processing efficiency is improved; theheating efficiency during hot-melt construction is improved; the emission of pollutants in the construction process is reduced and the ageing performance of a product is improved.

Description

technical field [0001] The invention belongs to the field of building waterproof material processing, and more specifically relates to a coating and covering material, a preparation method thereof, and a modified asphalt waterproof coiled material. Background technique [0002] Asphalt-based waterproof materials are cheap and easy to obtain, asphalt has good compactness and excellent waterproof performance, and asphalt has self-healing properties and excellent aging resistance, which are incomparable to other materials, so it occupies a leading position at home and abroad. The main market for waterproof materials. Since the application of asphalt linoleum in my country in the 1950s, asphalt waterproof materials have rapidly become the leading product of my country's building waterproof materials, both in terms of variety and quality. According to statistics from the Waterproof Association, asphalt waterproof materials occupy more than 65% of the domestic market in China. Asp...

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Problems solved by technology

During this preparation process, the light components in asphalt and softened oil will volatilize a large amount of organic volatiles, carbon monoxide, sulfur dioxide and other gases due to the high heating temperature. Since the production line cannot be completely sealed, the environmental protection treatment device cannot achieve 100 %The treatment of waste gas caused obvious odor in the workshop of modified asphalt waterproofing membrane, which seriously threatened the health of production workers and also seriously affected the residents living around.

[0004] There are two main schemes for reducing the production temperature in the prior art. One is to use solvents to predissolve polymer modifiers such as SBS and SBR, such as Chinese patent application CN00129156.4. This method can improve the dissolution rate of SBS and can Mixed with asphalt, but the solvent needs to be separated, the required process is more complicated, the recovery efficiency of the added solvent cannot be guaranteed, and some will remain in the modified asphalt, thus affecting the properties of the modified asphalt

The second is to use the method of activating rubber powder to achieve low-temperature modification, such as the Chinese patent application CN201610005365.2. In this patent, the inventor pretreated the rubber powder by means of ultrasonic energy gathering, which improved the swelling activity of the rubber powder. In order to achieve low-temperature modification, this method reduces the modification temperature of the whole process to a certain extent, but cannot reduce the modification temperature of polymers such as SBS and SBR. Therefore, it can be considered that there is no suitable method to reduce the modification temperature of modified asphalt at present. Process production temperature

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