1. Proportion of AB two-component polyurethane potting glue:

The ab group polyurethane potting adhesive is a two-component reaction curing type, and the ab group polyurethane potting adhesive is composed of A and B components. A component is a white or light-colored viscous polyurethane prepolymer, B component is a black paste or liquid formed by mixing and dehydrating curing agent, and the ab group polyurethane potting adhesive has certain elasticity and adhesion after curing Sex, (A component: B component = 10: 0.8 ~ 1.2).

2. Preparation of ab two-component polyurethane adhesive:

The ab group polyurethane potting glue can be used after mixing the two components evenly according to the mixing ratio given in the instruction manual. Whether it is mixed by machine or by hand, it should achieve uniform color and no color difference. When mixing, prevent air bubbles from entering, and when applying glue, prevent air bubbles from entering, compact, and fill the sealing place.

Adding additives with adsorption activity can play the role of defoaming and dehydration. Activated molecular sieve powder is an ideal material. Molecular sieve activated powder has strong adsorption, water absorption, and CO2. It is an effective additive for polyurethane potting adhesive additives in AB group and plays a role in eliminating air bubbles. Its characteristics are: colorless, odorless, The size is 2-4 microns, fine powder.

The addition ratio in the two-component AB polyurethane potting compound is 2-5%.

The proportion of polyurethane potting glue used in group ab is A:B=100:8-12, and the sizing time is 2-6 hours. Group ab polyurethane potting glue is neutral, water resistant, oil resistant, weak acid and alkali resistant, and has superior aging resistance. Long service life, with good anti-leakage adhesive sealing performance.

The specific applications of ab group polyurethane potting glue in construction include: the connection of building materials such as concrete prefabricated parts and the filling and sealing of construction joints, the sealing of joints around the wooden frames of doors and windows and between the concrete of walls, and the lightweight construction of buildings. (such as curtain wall) paste caulking, waterproof caulking of balconies, swimming pools, bathrooms and other facilities, sealing of joints of air conditioners and other systems, sealing of heat-insulating double-glazing and heat-insulating window frames, etc.

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