Anti-cracking environment-friendly waterproof bonding material for roof and preparation method thereof

Abstract

The invention discloses an anti-cracking environment-friendly waterproof bonding material for a roof and a preparation method thereof. The bonding material is prepared from the following raw materialsin parts by weight: 20 to 30 parts of ethylene-vinyl acetate copolymers, 5 to 7 parts of anti-cracking fiber, 10 to 15 parts of inorganic gel, 7 to 9 parts of nanometer polymers, 3 to 5 parts of polymer emulsion, 4 to 6 parts of polyvinyl alcohol resin, 1 to 2 parts of dispersing agents, 8 to 12 parts of waterproof filling agents, 0.2 to 0.6 part of anti-foaming agents, 1 to 2 parts of antioxidants and 10 to 12 parts of organic solvents. The bonding material is used for a roof waterproof purpose, and has the excellent performance of cracking resistance, water flushing resistance, weather resistance and aging resistance; the attachment force and the anti-stretching performance are good; no toxicity and no harm exist; safety and environment-friendly effects are achieved; the one-step construction shaping is realized; meanwhile, the raw material ingredients are safe and reliable; no pollution is caused on the environment; raw materials can be easily obtained; the cost is low; the processis simple and clear; high practical values and good application prospects are realized.

Description

technical field [0001] The invention relates to the technical field of building waterproof materials, in particular to a crack-resistant, environmentally friendly and waterproof bonding material for roofs and a preparation method thereof. Background technique [0002] The existing roof is mainly made of cement concrete. Due to long-term thermal expansion and contraction, it is easy to crack and leak. It may crack and fail after a few years, and waterproof construction needs to be carried out again, which has caused a huge burden on the structural maintenance and repair of the building. At present, mainstream waterproof materials mainly include waterproof coiled materials, polyurethane waterproof coatings, polymer cement-based waterproof materials, and cement-based osmotic crystalline waterproof materials. Among them, cement-based osmotic crystalline waterproof materials form water-insoluble crystals in concrete. , Block the capillary channels, so that the concrete is dense ...

AI Technical Summary

Problems solved by technology

[0004] The principle of repeated impact is neither the same as static pressure nor similar to the fatigue of continuous circulation, but a kind of impact fatigue. Therefore, even waterproof coatings with good compressive strength and osmotic pressure , It does not mean that it can have good impact fatigue resistance, especially weather such as heavy rain and hail will reduce the temperature of concrete, making the waterproof material more brittle and more likely to be damaged under impact fatigue

In the testing process of national standards, waterproof materials are often only tested for their impermeability under static water pressure, and only a small number of materials are tested for fatigue properties (such as waterproof membranes), while impact fatigue tests are ignored.