High-temperature-resistant hot-melt pressure-sensitive adhesive as well as preparation method and application thereof

Abstract

The invention relates to a high-temperature-resistant hot-melt pressure-sensitive adhesive and a preparation method and application thereof. The hot-melt pressure-sensitive adhesive is prepared from athermoplastic elastomer, polyisobutene, a plasticizer, matrix resin, tackifying resin, butadiene styrene rubber, an inorganic filler, an antioxidant, an ultraviolet light absorber and a coupling agent, wherein the tackifying resin is one or a combination of rosin resin, terpene resin and hydrogenated rosin resin, and the tackifying resin contains hydrogenated rosin resin accounting for 25% or above of the total mass of the tackifying resin. According to the hot-melt pressure-sensitive adhesive disclosed by the invention, the specific tackifying resin and a certain amount of inorganic filler are added into the thermoplastic elastomer, and the components such as the matrix resin, the plasticizer and the coupling agent are matched, so that the prepared hot-melt pressure-sensitive adhesive has excellent high-temperature holding power, excellent high-temperature and low-temperature resistance, excellent thermal aging resistance, high peel strength, and good initial adhesion. The hot-melt pressure-sensitive adhesive can be applied in a wide temperature range, and can be well bonded with a base material after being soaked in water for a long time.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a high-temperature-resistant hot-melt pressure-sensitive adhesive and a preparation method and application thereof. Background technique [0002] At present, the membranes used in building waterproof construction are basically asphalt modified waterproof membranes. It is well known that modified asphalt adhesives are cold and brittle in heat flow, which is prone to problems during construction in winter and summer. If the temperature is too high in summer, slippage will easily occur, and in winter, the modified asphalt will easily break and lose viscosity due to the low temperature. There is no protective layer on the surface of the modified asphalt waterproof membrane. If the membrane is placed outdoors for a long time due to delays in the construction period, weather and other reasons, it is easy to lose the adhesion of the membrane due to long-term ultraviolet radiation. ...

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Problems solved by technology

There is no protective layer on the surface of the modified asphalt waterproof membrane. If the membrane is placed outdoors for a long time due to delays in the construction period, weather and other reasons, it is easy to lose the adhesion of the membrane due to long-term ultraviolet radiation.

Existing polymer pre-laid waterproof membrane is mainly composed of polymer sheet, self-adhesive adhesive layer and anti-adhesive layer. The self-adhesive adhesive layer can use high-performance hot melt adhesive, as disclosed in Chinese patent CN106221629A A flame-retardant hot-melt pressure-sensitive adhesive, its preparation method and application, the hot-melt pressure-sensitive adhesive adopts thermoplastic elastomer, amorphous polyolefin, polyisobutylene, first tackifying resin, second tackifying resin, plasticizer , coupling agent, ultraviolet absorber, antioxidant and flame retardant are used as raw materials to prepare flame-retardant hot-melt pressure-sensitive adhesives, which have flame retardancy, but still have the problem of insufficient high-temperature holding power

Moreover, the existing hot-melt pressure-sensitive adhesives on the market generally have poor low-temperature resistance, low-temperature loss of adhesion, poor adhesive performance, easy adhesion and slippage when used at high temperatures, poor peeling performance after long-term soaking in water, and easy glue opening, etc. question

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