Long-acting uvioresistant hot-melt pressure-sensitive adhesive for non-asphalt-based polymer waterproof coiled material and preparation method thereof

Abstract

The invention relates to the technical field of waterproof coiled materials, specifically to a long-acting uvioresistant hot-melt pressure-sensitive adhesive for a non-asphalt-based macromolecular waterproof coiled material and a preparation method thereof. The pressure-sensitive adhesive comprises the following raw materials: SEPS, naphthenic oil, first polyisobutene, second polyisobutene, terpene resin, hydrogenated C5 petroleum resin, nanometer zinc oxide, an antioxidant, an ultraviolet light absorber and a light stabilizer. The preparation method comprises the following steps that: the naphthenic oil, the first polyisobutene, the second polyisobutene, the antioxidant, the ultraviolet light absorber and the light stabilizer are added into production equipment; then nitrogen is introduced; heating is started, and stirring and temperature rising are conducted; SEPS is added, and stirring under a heat-preserved condition is conducted; the terpene resin and the hydrogenated C5 petroleum resin are added, and stirring under a heat-preserved condition is conducted; and the nanometer zinc oxide is added, a vacuum degree is controlled, and stirring under a heat-preserved condition is conducted. The pressure-sensitive adhesive disclosed by the invention meets national standard requirements, is low in cost, has longer-acting weather resistance and low-temperature bending performance,is simple and feasible in preparation process, does not need special equipment and process, and is non-toxic and harmless.

Description

technical field [0001] The invention relates to the technical field of waterproof membranes, in particular to a long-acting anti-ultraviolet hot-melt pressure-sensitive adhesive for non-asphalt-based polymer waterproof membranes and a preparation method thereof. Background technique [0002] The non-bitumen-based polymer waterproof membrane was first invented by the American GRACE waterproof company and brought into the Chinese market. Subsequently, the country issued relevant standards in 2008 to vigorously promote the pre-paved waterproof membrane system and construction technology. a wide range of applications. [0003] After the non-asphalt-based polymer waterproof membrane is laid and fixed, it is necessary to bind steel bars, or the construction period is delayed and the concrete cannot be poured immediately, and it is likely to be exposed to sunlight for up to a month or even longer. Therefore, GB / T 23457-2017 "Pre-laid Waterproof Membrane" clearly stipulates that t...

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Problems solved by technology

[0004] In view of the existing non-bitumen-based polymer waterproofing membranes on the market, after one or two months of sunlight exposure, cracks appear on the bonding surface, the low-temperature flexibility of the membranes and the peeling strength decrease, and the skin-type waterproofing effect is affected. The invention provides a long-acting anti-ultraviolet hot-melt pressure-sensitive adhesive for non-asphalt-based polymer waterproof coils and a preparation method thereof. The invention uses hydrogenated polystyrene-polyisoprene-polystyrene thermoplastic rubber (Styrene Ethylene Propylene Styreneblock copolymer, referred to as SEPS) as the basic skeleton material, supplemented with naphthenic oil, two kinds of polyisobutylene, terpene resin, hydrogenated C5 petroleum resin and other additives, the obtained hot-melt pressure-sensitive adhesive can meet the national standard requirements, At the same time, it is low-cost, and compared with other hot-melt pressure-sensitive adhesives on the market, the hot-melt pressure-sensitive adhesive has longer-lasting weather resistance and low-temperature bending performance, and the production process of pressure-sensitive adhesive is simple and easy, without special equipment and special processes , the preparation process is non-toxic and harmless

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