Tear-free self-adhesive rubber waterstop belt and preparation method thereof
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A rubber waterstop, self-adhesive technology, used in chemical instruments and methods, adhesives, adhesive types, etc.
Active Publication Date: 2015-07-22
HENGSHUI ZHONGTIEJIAN ENG RUBBER
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The active inorganic particles are active silica, which is pressed into the self-adhesive layer by the process roller, and there is no chemical bonding with the self-adhesive layer, so there is a defect of weak adhesion
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preparation example Construction
[0041] The preparation steps of the above-mentioned peel-off rubber waterstop:
[0042] In the first step, the preparation of the rubber base material includes: according to the rated component ratio, the traditional extrusion process is used to produce a rubber base material with a thickness of 8-10 mm;
[0043] The second step, the preparation of the polymer self-adhesive adhesive layer includes: first adding softening oil, tackifying resin, filler and antioxidant into the reaction kettle and heating, the temperature is controlled at 170-180 °C, and at the same time, the agitator is started to stir ;After the above materials are all melted, add thermoplastic elastomer, the main material of the self-adhesive layer, and keep the temperature between 170°C and 190°C. self-adhesive;
[0044] In the third step, the pretreatment process of the isolation layer includes:
[0045] Put the natural zeolite, metakaolin and wollastonite inorganic particles and stearic acid into the ...
Embodiment 1
[0051] Embodiment 1: by the SBS of 50 parts by weight, the softening oil of 20 parts by weight, the C5 petroleum resin of 34 parts by weight, the coumarone resin of 15 parts by weight, the rutile titanium dioxide of 3 parts by weight and the antioxidant of 0.2 parts by weight Agent 1010 composition;
Embodiment 2
[0052] Embodiment 2: by the SBS of 48 parts by weight, the SIS of 20 parts by weight, the softening oil of 15 parts by weight, the carbon nine petroleum resin of 32 parts by weight, the coumarone resin of 12 parts by weight, the rutile titanium dioxide of 2.5 parts by weight and The antioxidant 1010 of 0.3 parts by weight constitutes;
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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 ...
Claims
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