A kind of joint waterproof sealing paste for polymer coil and preparation method thereof

Abstract

The invention discloses a joint waterproof sealing paste for polymer coils and a preparation method thereof. The joint waterproof sealant for polymer coils comprises the following components calculated in parts by weight: 18-38 parts of low Tg acrylate copolymer Emulsion, 5-18 parts of self-crosslinking acrylate emulsion, 5-15 parts of styrene-butadiene emulsion, 5-17 parts of viscosifying emulsion, 30-45 parts of filler, 0.1-0.5 parts of dispersant, 0.1-0.4 parts of AMP-95, 3-10 parts of water, 0.1-0.5 parts of cellulose ether, 0.1-0.3 parts of anti-corrosion and anti-fungal agent, 0.1-0.5 parts of defoamer. The node waterproof sealing paste for polymer coils of the present invention has strong adhesion to various materials, especially for the node parts of polymer coils such as HDPE, TPO, PVC, etc., the sealing effect is excellent, and it does not contain organic solvents. Totally green and eco-friendly.

Description

technical field [0001] The invention relates to the technical field of waterproof building materials, in particular to a node waterproof sealing paste for polymer coils and a preparation method thereof. Background technique [0002] Generally speaking, ninety percent of the leakage points of building waterproofing projects are located at the nodes. Nodes often have complex structures and various interface materials, so the problem of sealing and waterproofing has always been a factor that cannot be ignored. With the development of the construction industry and materials, a variety of practical materials have been developed for the waterproof and sealing of joints, such as polyurethane sealant, silicone sealant, polysulfide rubber, modified asphalt sealant and other sealing materials. However, these materials have strict construction requirements, and it is difficult to bond to the base surface on a wet base surface. The bonding to plastic pipes, metal, glass, etc. is not go...

AI Technical Summary

Problems solved by technology

Since the raw materials of polymer coils (HDPE, TPO, PVC, etc.) have weak polarity, the surface lacks active groups and is relatively smooth, while the general sealants are mostly polar materials, and the two are difficult to react or have incompatibility. Okay, so the joint waterproof and sealing treatment of polymer coils is even more difficult

For example, polymer coils are often fixed with metal beading at the end of the wall, but lack of effective sealing can still allow rainwater to infiltrate and cause water leakage; when adjacent polymer coils are laid flat, heat welding, hot melt adhesive, Butyl rubber, neoprene and other methods are used for lap joints, but no additional sealing treatment is performed on the lap joints, which can easily lead to poor sealing and affect the waterproof effect

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