Mortar technology: Epoxy floor coating precautions

Construction requirements
1, the cement base is solid, strong, shellless, preferably cement and concrete bottom together pouring, in order to put an end to the phenomenon of mortar layer shelling, concrete foundation drying for 28 days. The ground floor on the first floor needs to be waterproofed.
2, requiring the surface surface of cement substation can not be sand, good hardness, no cement powder phenomenon
china
.
3, the surface is flat, no bumps, honeycomb hemp surface, cement and other phenomena.
4, the pH value of the surface of the floor should be between 6.8 and 8.0.
Cause of blistering
Epoxy floor blisters occur on the first floor or basement, sometimes above the second floor also occur from time to time, epoxy floor blisters generally found shortly after construction, some of the morning paved epoxy floor in the afternoon there are blisters. Blisters grow from small to large and develop to a certain extent after stopping. The higher the temperature, the more likely the blisters are to occur and the faster they develop. Blisters come in different shapes and sizes. Some blisters have a diameter of more than 1m and a height of 20 to 50mm.
the cause of the blisters, is a matter of concern to everyone, cut the blisters found that the bubbles contain water or inflamed yellow liquid, epoxy ground layer and the grass root separation, glue glue glue glue glued to the base is pulled into a peak nest, according to "physics" explanation, in a closed container filled with liquid, liquid evaporation, the formation of a saturation state of the three curves of the temperature and pressure relationship.
in an airtight container, the pressure containing saturated water vapor rises as the temperature rises, when the temperature is 20. C, the pressure inside the drum pack is 0.01MPa, while when the temperature is between 70 and 80.C is a straight line up to 0.1MPa, and in many areas in the hot summer ground extreme radiation heat can reach about 70.C, in such a high temperature, epoxy cogze has softened the adhesive has been greatly reduced, so it is the same tire gradually drumming one Samples, so that the epoxy ground layer bulging a large package, the glue is pulled into a honeycomb-like, wherein there is no blistering part of the epoxy layer and the ground part bonding is not solid, careful observation of the contact part, will also find that there is an uncritical part

2. Dehydration in other ingredients in epoxy is endless.
3. The combination of epoxy and grass-roots construction does not leave a gap and the chemical activity of epoxy itself, without complete curing or encountering residues or gases that are not fully cured by moisture.
4. Moist gas seeping underground at the grass roots.
from the above four aspects to analyze, the grass-roots moisture is the main, absolutely dry grass-roots is not. The size of the moisture content can not determine whether the epoxy resin floor will produce blisters, the base part of the moisture and epoxy residue is wrapped in epoxy and the base, forming bubbles of different sizes, because the epoxy layer itself is not breathable, moisture can not be discharged, leaving a foaming root seedlings. Therefore, bubbles are produced in the plane, mostly between the base and epoxy layer, the moisture in the base is difficult to avoid the
characteristics
by special epoxy resin to add appropriate solvents, fillers, surfactants and advanced pigments and other materials as the main agent, and the use of modified lipamine as a curing agent, in normal temperature conditions formed by the dense three-dimensional cross-link coating. With:
1, good wear resistance performance;
2, good anti-crushing performance;
3, excellent anti-penetration performance;
4, medium conditions of corrosion resistance performance;
5, good adhesion, to ensure that the coating does not crack, do not fall off;
6, smooth appearance and clean, easy to clean maintenance;
7, low cost.
Scope of application
cement or errye floors in manufacturing plants such as electrical appliances, electronics, machinery, food, pharmaceuticals, chemicals, tobacco, beverages, textiles, clothing, furniture, plastics, sporting goods, etc.
technical indicators
drying time table dry ≤4
soic≤24
adhesion (grade) ≤1
pencil hardness ≥2H
Impact resistance 50 through
flexibility 1mm through
wear resistance (750g/500R, weight loss g) ≤0.03
water resistance 4 8 hours no change
30% sulphuric acid 7 days no change
40% sodium hydroxide 7 days no change
gasoline resistance 120 s 7 days no change
grease resistance 7 No change
Reservation
1. Pedestrians are advised to wear soft soles (if conditions permit on site) and to clean up hard objects such as sand particles on the soles of the shoes before entering the industrial floor area in order to reduce scratches on the surface of the floor by sharp objects.
. Carry items as lightly as possible to prevent heavy objects from hitting the ground, so as not to cause man-made damage.
3. Driving on the epoxy flooring floor in the workshop should pay attention to the speed should not be too fast, so as not to brake behavior caused by shearing heat too high, so that epoxy floor paint instantly softened (epoxy flooring paint softening temperature at about 80 degrees C, so its use of ambient temperature is generally controlled below 50 degrees C) and under the effect of shear force to produce difficult to clean stains.
4. Daily cleaning can be done with a floor cleaner or wet cloth wipe test, optional cleaning with a neutral cleaner, can also use general detergent to add a small concentration of water to make a cleaning solution, and then use a floor cleaner or cotton mop to wash the surface of the floor stains, and wash again with clean water, dry the ground;
5. Waxing is done from time to time (usually once a month), it is recommended to use special floor wax or emulsified water wax; Waxing can increase the wear resistance and scratch resistance of any floor material.
. Avoid hitting the ground with heavy objects or tools, or drag heavy objects directly over the epoxy ground.
. Avoid heavy corrosive media for long periods of time soaked in the floor paint film, if not carefully corrosive acid and alkali spill, be sure to clean up the acid and alkali media in a timely manner.
Performance characteristics
epoxy floor paint with strong acid and alkali, wear-resistant, pressure-resistant, impact-resistant, mold-proof, waterproof, dust-proof, anti-slip and anti-static, electromagnetic waves and other characteristics, bright and diverse colors, easy to clean. It uses a one-time coating process, no matter how large the area, there is no connection seam, but also a dust-free material, with strong adhesion, wear-resistant, hardness and so on.
1, dust, moisture, wear resistance;
2, easy to clean, fast construction, easy maintenance, low cost,
3, strong adhesion, flexibility, good impact resistance,
4, thickness 0.2-0.3mm
acceptance standard
1, ambient temperature of 25 degrees C, 2-3 days after construction should reach the dry, that is, hardness to complete the solidification of about 80%;
2, the surface can not appear sticky phenomenon;
3, bubbles: flat coating type, mortar-type bubble-free, self-leveling allows 1 small bubble / 10 square meters;
4, smoothness is good, noknife marks, large area interface is basically flat;
5, no floating hair flowers, uniform color, large area interface allows for a very un obvious color difference;
6, no coarse impurities, but allows airborne dust to fall caused by the very small defects;
7, the surface of the floor should be smooth, gloss should meet the design requirements (high gloss≥90, light≥70, half-light 50 to 70), flat type for light, water is half light to no light,
8, orange skin, mortar anti-slip surface effect should be obvious.
construction key
epoxy floor construction in several key points:
1. plain quality
2. plain treatment
3. floor construction
4. cleaning treatment


2, epoxy bottom coating
epoxy resin penetration closed bottom coating proportionally the main agent and curing agent mixed, fully stirred evenly, in the use time
roll coating, coating to be thin and uniform, after coating shiny, glossy place, in due course to make up.
3, epoxy mortar coating
(1) batch scraping coarse quartz mortar layer: first of all, the epoxy resin coating main agent fully stirred evenly, proportionally mix the main agent with
curing agent, fully stirred well, mixing the curing agent from the center of the main agent barrel poured in, to avoid the material mixed
uneven. After stirring, the ratio of the appropriate amount of 4-6, thick quartz sand, the use of scraper scraping process to fill the
the base surface.
(2) batch scraping fine quartz mortar layer: in the mixed epoxy resin to match the appropriate amount of fine quartz sand,
also use batch scraping, further increase the pressure resistance and impact resistance of the medium coating.
according to the floor design thickness of multiple batch scraping can be repeated (1) (2) process, to the mortar after the coating curing,
vacuum clean.
4, epoxy putty coating
first of all, the epoxy resin in the main agent fully stirred evenly, proportionally the main agent and curing agent mixed, fully stirred
evenly, when mixing the curing agent from the center of the main agent barrel poured in, to avoid uneven material mixing. After stirring, the matching ratio of
moderate quartz powder batch scraping to fill, closed mortar layer of sand eye, capillary hole smooth substation, so that epoxy surface coating construction up to
to beautiful, flat.
5, epoxy self-flow plane coating
the solvent-free epoxy resin self-flowing plane coating agent fully stirred evenly, proportionally the main agent and curing agent mixed,
fully stirred evenly, when mixing the curing agent from the center of the main agent barrel poured in, to avoid uneven material mixing. Fully
stirred well, poured on the ground, with a special tooth knache scraping coating, first deal with the foot of the wall and corners, and then the overall
coating together. When coating, it is found that the sand grain can be picked out in time, so as not to affect the effect of the surface.
kinds
epoxy flooring can be broadly divided into: thin-coated epoxy flooring, epoxy mortar flooring, epoxy self-flowing flooring, epoxy anti-static flooring, garage ramp dedicated flooring, and other personalized products: epoxy sand flooring, crystal stone flooring, bare stone flooring, epoxy marble flooring, high temperature fireproofing flooring, sports-specific flooring.
Selection Method
In order to help customers who use floor decoration protection coatings correctly choose the type of flooring and effectively control construction costs, it is recommended that customers should start with the following factors:
medyeal
the main three aspects:
1. Wear resistance: Which vehicles will walk when the floor is used;
2. Pressure resistance: how much load the floor will bear when used;
3. Impact resistance: whether the impact force will cause the surface peeling;
Chemicality
Mainly consider the following two aspects:
1. Acid and alkaline resistance: the type and concentration of corrosive chemicals used.
2. Solvent resistance: type of solvent and contact time when used.
floor location
the location of the ground floor or ground floor depending on the floor, determine whether moisture treatment is required or select a special moisture-proof floor?
of the base surface
1. Grassroots strength: generally requires pressure ≥ 20Mpa
2. Flatness: Do I need to be repaired with epoxy mortar?
3. Before the ground construction, it is generally necessary to use self-leveling treatment
Aesthetic requirements
1. Color requirements: Do you need color to divide the area?
2. Brightness requirements: Do you choose matte or bright?
3. Leveling requirements: Is there a requirement for the leveling of the floor?