Self-adhesive TPO waterproof roll hot melt adhesive and preparation method thereof

The invention discloses a self-adhesive TPO waterproof roll hot melt adhesive and a preparation method thereof. The self-adhesive TPO waterproof roll hot melt adhesive comprises the following components in parts by weight: 15-40 parts of a thermoplastic elastomer, 5-15 parts of rubber oil, 10-30 parts of polyisobutene, 5-25 parts of solution polymerized styrene-butadiene rubber, 30-50 parts of tackifying resin and 1-5 parts of an antioxidant. Wherein the thermoplastic elastomer is composed of star-shaped structure SIS and star-shaped structure SBS according to the mass ratio of (0.5-4): 1; the solubility parameter of the rubber oil is 15.45 +/-3.07 (J/cm < 3 >) 1/2. The hot melt adhesive disclosed by the invention still has relatively high peel strength after thermal aging, and has good adhesive property with the TPO waterproof coiled material, namely, the hot melt adhesive has the effect of not losing viscosity after thermal aging. 本发明公开了一种自粘TPO防水卷材热熔胶及其制备方法，该自粘TPO防水卷材热熔胶包括如下重量份计的组分：热塑性弹性体15-40份、橡胶油5-15份、聚异丁