A kind of non-curing rubber asphalt waterproof coating and preparation method thereof

Abstract

The invention discloses a non-cured rubber asphalt waterproof coating which is prepared from the following components in percentage by weight: 45 to 70 percent of petroleum asphalt, 10 to 30 percent of a plasticizer, 4 to 8 percent of a compatilizer, 3 to 6 percent of a crosslinking agent, 0.8 to 1.6 percent of a catalyst, 1 to 2 percent of first hot melt type rubber and 6 to 10 percent of second hot melt type rubber. The invention further discloses a preparation method of the non-cured rubber asphalt waterproof coating. By crosslinking modification of the petroleum asphalt by the crosslinking agent and the catalyst, the melting point of the petroleum asphalt is increased, so that adding of SBS (Styrene / Butadiene / Styrene) is reduced, and the effect of improving the high temperature performance of the coating without adding the SBS is achieved; therefore, after being cooled, the coating is sticky and non-cured paste, and is high in creep property and high in self-repairability.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a non-curing rubber asphalt waterproof coating and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Building waterproof materials refer to a class of functional building materials that are coated on the surface of building structures to prevent buildings from being damaged by water through their own waterproof and anti-seepage functions. At present, waterproof materials can be generally divided into four categories: waterproof coiled materials, waterproof coatings, rigid and plugging waterproof materials, and sealing materials. These materials can form a waterproof membrane to play a waterproof role, and they have a certain tensile strength or elongation at break. However, in actual waterproof construction, sometimes the waterproof material is required to have long-term creep and follow the cracks in the base layer. It doe...

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Problems solved by technology

[0004] After 2010, many large-scale waterproof enterprises in China began to develop and produce non-curing asphalt waterproof coatings, including Oriental Yuhong, Shandong Hongyuan, Shenzhen Zhuobao, Guangxi Golden Umbrella, etc. Especially in recent years, there are more and more manufacturers, but There are few products that really meet the JC / T 2216-2014 "Non-curing Rubber Asphalt Waterproof Coating" standard (not yet officially released), mainly reflected in the high-temperature performance (> 65 ℃) and non-curing characteristics of the product, or high-temperature performance Standard non-cured features are not obvious, or non-cured features are obvious but high temperature performance is not up to standard

In order to meet the high temperature performance standards, generally add an appropriate amount of styrene-butadiene rubber (SBS) and less mechanical oil, which will cause the material to solidify after cooling, without non-solidification and creep characteristics. Others such as self-repair, construction with water, and base Functions such as tight bonding also no longer exist; in order to have obvious non-curing characteristics and good creep properties, generally less styrene-butadiene rubber (SBS) and more mechanical oil are added, which will lead to poor high-temperature performance of the material. Tests have found that some Commercially available products flow and drip at 40°C. This kind of material must flow seriously when used on facades or slopes, especially when the ambient temperature is high. The waterproof membrane laid on it is also easy to slip and fall. Security risks

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