A kind of composite isolation sand and its preparation method

Abstract

The invention provides a composite isolation sand and a preparation method thereof. The composite isolation sand is a multi-layer coating structure, including a mineral particle carrier, a transition layer, a functional shell layer and a surface protection layer sequentially arranged from the inside to the outside. The functional shell layer includes acrylic emulsion, Portland cement and titanium dioxide. The composite isolation sand can effectively solve the problems of poor bonding between natural mineral particles and the bonding layer and post-cast concrete, poor isolation and protection effect on the bonding layer, and easy crushing of the main reinforcement layer. Compared with artificial synthetic sand, The composite isolation sand has high production efficiency and relatively low production energy consumption. The composite insulating sand of the present invention also has excellent water resistance, weather resistance, aging resistance and ultraviolet resistance, has a simple preparation method, and avoids the generation of secondary dust during transportation and use.

Description

technical field [0001] The invention relates to the technical field of waterproof coiled materials, in particular to a composite isolation sand and a preparation method thereof. Background technique [0002] Waterproof membrane is mainly used in building walls, roofs, underground, bridges, tunnels, highways, etc., to resist external rainwater and groundwater seepage. It is a flexible building material product that can be rolled into rolls. There is no leakage connection between objects, and it is the first barrier for the waterproofing of the whole project, which plays a vital role in the whole project. The main products are asphalt waterproof membrane and polymer waterproof membrane. Waterproof membranes require good water resistance, stability to temperature changes (no flow, no foaming, no sliding at high temperature; no brittle cracking at low temperature), certain mechanical strength, elongation and aging resistance, etc. [0003] Among them, the pre-laid waterproof m...

AI Technical Summary

Problems solved by technology

[0004] However, natural mineral particles such as quartz sand have technical defects such as large dust, poor adhesion to the bonding layer and post-cast concrete, poor isolation and protection effect on the bonding layer, high hardness, sharp edges and corners, and easy to crush the main reinforcement layer.

However, artificial synthetic sand such as mullite has technical defects such as high production cost, low production efficiency, high production energy consumption, many by-product solid wastes, and difficult disposal.