Tear-free self-adhesive rubber waterstop belt and preparation method thereof

Abstract

The invention belongs to the technical field water-proof materials of buildings and particularly discloses a tear-free self-adhesive rubber waterstop belt and a preparation method of the tear-free self-adhesive rubber waterstop belt. The invention adopts the major technical scheme that the rubber waterstop belt comprises a rubber base material, as well as a high polymer self-adhesive layer and an isolation layer that are pasted on one side face of the base material. The rubber base material is prepared from natural rubber, ZnO, stearic acid, an antiager, a reinforcing agent, operating oil, functional filling and a valcanizer via an extrusion technology, the high polymer self-adhesive layer is formed by melting SBS (styrene-butadiene-styrene) or / and SIS (styrene isoprene styrene) resin softening oil, an antiager, an reinforcing agent, operating oil, functional filling and an antioxidant via a stirrer, and the isolation layer is formed by stirring and mixing natural zeolite, metakaolin, wollastonite and stearic acid, and then the prepared high polymer self-adhesive layer and the isolation layer are applied on the rubber base material for calendering to form the belt. The waterstop belt has the self-adhesive layer which is securely connected with a concrete boundary layer, greatly improves adhesion between the rubber waterstop belt and concrete, and effectively solves the problems of water leakage and dampening of an expansion joint, a deformation joint and a construction joint.

Description

technical field

[0001] The invention belongs to the technical field of waterproof engineering accessories for buildings, and in particular relates to a peel-free self-adhesive rubber waterstop and a preparation method thereof. Background technique

[0002] The rubber waterstop uses the characteristics of high elasticity and compression deformation of rubber to produce elastic deformation under various loads, so as to effectively seal and prevent water leakage and seepage of building structures. It is mainly used for the foundation project integrated with the concrete structure in the construction joints, joints and deformation joints when the concrete is poured in place. The waterproof effect of the rubber waterstop depends on the bonding effect between the waterstop and the concrete. When the waterstop is stressed, it is easy to seep around and eventually lose the waterproof effect. The waterproof mechanism of the self-adhesive waterstop is to use the self-adhesive layer ...

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