Hot-melt pressure-sensitive adhesive as well as preparation method thereof and waterproof coiled material

Abstract

The invention provides a hot-melt pressure-sensitive adhesive as well as a preparation method thereof and a waterproof coiled material and belongs to the technical field of waterproof coiled materials. The hot-melt pressure-sensitive adhesive can be used for solving the problem that the existing hot-melt pressure-sensitive adhesive cannot simultaneously have low-temperature bending property, good holding power and excellent temperature resistance. The hot-melt pressure-sensitive adhesive is prepared from raw materials comprising a first elastomer, first polyisobutylene, and a first C5 petroleum resin, wherein the first elastomer is polystyrene-polyisoprene-polystyrene ethylene elastomer; and the first polyisobutylene is polyisobutylene having molecular weight less than 1000 and a pour point of -30 DEG C to -4 DEG C; and first C5 petroleum resin is solid alicyclic hydrocarbon hydrogenated petroleum resin having a softening point of 100 DEG C-127 DEG C. The hot-melt pressure-sensitive adhesive provided by the invention can be applied by coating at 120 DEG C-140 DEG C and has the advantages of excellent low-temperature bending property and good adhesive force to various materials under normal-temperature conditions, holding power and excellent anti-aging property.

Description

technical field [0001] The invention belongs to the technical field of waterproof coiled material, and in particular relates to a hot-melt pressure-sensitive adhesive, a preparation method thereof, and a waterproof coiled material. Background technique [0002] GB / T 23457 "Pre-laid / wet-laid waterproof membrane" clearly stipulates that the low-temperature bendability requirement for P-type products is -25°C without cracks. Generally speaking, high-density polyethylene pre-laid anti-adhesive waterproofing membrane products include three-layer functional structure, namely carrier polymer sheet, main polymer hot-melt pressure-sensitive adhesive film layer, and functional elastic coating. Among them, the thickness of the elastic coating is only a few microns, and it is a discontinuous film layer from a microscopic point of view. It is mainly used to prevent the product from sticking to itself and resist ultraviolet rays. Therefore, it is generally not necessary to examine the el...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the existing hot-melt pressure-sensitive adhesives cannot have low-temperature bendability, good adhesion holding force and excellent temperature resistance at the same time, and provides a low-temperature bendability without cracks at -25°C, which has good Hot-melt pressure-sensitive adhesive with stickiness and excellent temperature resistance, and it is used in high-density polyethylene pre-laid anti-adhesive waterproofing membrane

Images