What is waterproof coating?
Waterproof coating is a waterproof coating with a certain thickness on the surface of the structural layer that has its own set waterproof capacity. After being crosslinked and cured regularly, it forms a waterproof layer with certain toughness.
Coating film waterproof method
According to the conditions of the waterproof base and applicable parts. The reinforcement material and the cushioning material can be laid in the waterproof layer to achieve the purpose of improving the waterproof effect of the coating film and enhancing the strength and durability of the waterproof layer. Film waterproof due to waterproof effect is good, the construction is simple. Convenient, it is especially suitable for the waterproof construction of complex structure of the surface, so it has been widely used. It is not only used for building houses to prevent water, wall waterproofing, but also used in underground waterproofing and other engineering projects.
What materials are used to coat waterproofing projects and what are their respective roles?
Coating Waterproof Project Main Inner Primer Waterproof Coating, Wall Body Reinforcing Material, Insulation Material, Protective Material Composition
The primers mainly include synthetic resin, synthetic rubber, and rubber asphalt (solvent or emulsion type). The total effect is brushing, spraying, or applying to the top of the base layer. Used as the primary treatment material for the first stage of waterproof construction.
Waterproof coatings mainly include polyurethane waterproof coatings, acrylic waterproof coatings, rubber bituminous waterproof coatings, neoprene waterproof coatings, silicone waterproof coatings, and other waterproof coatings. Its role is to form the main waterproof material for coating films. The building's surface is insulated from the water, which acts as a waterproof and sealing effect on the building, and also serves to beautify the building's decorative effect.
Carcass reinforcements. There are mainly glass fiber textiles, synthetic fiber textiles, synthetic fiber nonwovens, etc. Its role is to increase the strength of the coating waterproof layer, when the base layer crack occurs, prevent the coating film from cracking or creep rupture; Can prevent the film from falling.
Insulation material, such as polystyrene board, such as polystyrene rice, plays a role in heat insulation
Protective material. Such as decorative coatings, decorative materials, protective buffer materials, etc., its role is to protect the waterproof coating from damage and decoration of landscaping materials, such as polystyrene rice, play a role in thermal insulation.
What is a waterproof coating and what are its basic performance characteristics?
The waterproof coating is a general term for a material that is a viscous liquid high molecular synthetic material having no fixed shape at room temperature, and a tough waterproof film formed on the base layer after being coated and then cured by volatilization of the solvent or moisture evaporation or reaction.
The basic features of waterproof coating are as follows
1. The waterproof coating is a viscous liquid at room temperature. After coating and curing, it can form a seamless waterproof coating film.
2, waterproof coating is particularly suitable in the vertical, yin and yang angle, wear structural layers of pipes, bulges, narrow places and other details of the structure at the waterproof construction, curing shop, can form a complete waterproof film on the surface of these complex components.
3, waterproof coating construction is cold operation, easy operation, low labor intensity.
4, after the formation of the coating film waterproof layer light weight, for light shell and other special-shaped roof mostly waterproof construction.
5, coating waterproof is a good resistance to water, weather, acid and alkali properties and excellent extension performance, can adapt to the needs of local deformation of the base layer.
6, the tensile strength of the coating waterproof layer can be reinforced by attaching the carcass reinforcement material, for the base layer cracks, structural joints, pipe roots and other parts that easily lead to leakage, easy to enhance, reinforce, repair, etc. deal with.
7, waterproof coating generally rely on artificial coating, the thickness is difficult to achieve uniform - so when construction, must be repeated in strict accordance with the operating method to brush repeatedly to ensure that the minimum amount of use per unit area, to ensure that the coating waterproof Layer construction quality.
8, mining J11 coating waterproof, maintenance more convenient.
How are waterproof coatings classified? Different types of waterproof coatings have different characteristics?
At present, waterproof coatings are generally categorized according to the type of coating and the main components of the film forming material according to the coating.
First, according to the liquid type of paint classification
According to the liquid type of the paint, the waterproof paint can be divided into solvent type, water emulsion type, and reaction type.
1, solvent-based waterproof coating in this type of coating. The polymer material, which is the main film-forming substance, is dissolved in an organic solvent and becomes a solution. Polymer materials are stored in solution (paint) in molecular state;
This type of paint has the following special features: through the solvent volatilization, through the polymer molecular chain contact, lap and other processes and conjunctiva; coating drying fast, thin and dense conjunctiva; production process is relatively simple, coating storage stability is better; easy It is flammable, explosive, and toxic. It must be safe when it is produced, stored, and used. Because of the rapid volatilization of solvents, there is pollution to the environment during construction.
2. Water-emulsion waterproof coating This type of waterproof coating, as the main film-forming material, is suspended in suspension (not dissolved) in tiny particles (rather than in a molecular state) in water and becomes a latex-like coating.
This type of paint has the following characteristics: through the evaporation of moisture, through the process of solid particles close to, contact, deformation and conjunctiva; coating drying is slow, the density of a film forming is lower than that of solvent-based paint, generally not suitable for construction under 5 °C; The period is generally not more than half a year; it can be constructed on a slightly moist grass-roots level; non-toxic, non-combustible, safer in production, storage, transportation, and use; easy to operate, does not pollute the environment; production costs are low.
3, reactive waterproof coating In this type of coating, the polymer material that is the main film forming material exists in the liquid state of the prepolymer. Mostly composed of two-component or single-component coatings, almost free of solvents.
These coatings have the following characteristics: through the liquid polymer prepolymer and the corresponding material chemical reaction, into a solid (conjunctiva); can form a thick coating of a single piece, no shrinkage, dense film; double group Sub-coating requires 1:2 on-site accuracy, even mixing to ensure quality; price is more responsible.