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    Home > Coatings News > Paints and Coatings Market > Coating technology: silicon aluminum exterior wall coating and its construction technology

    Coating technology: silicon aluminum exterior wall coating and its construction technology

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    It is suggested that a kind of very stable clay like inorganic cementitious material can be produced by adding the natural resin of hym-25 to the active mineral material containing aluminosilicate, which is the aluminosilicate exterior wall coating The coating has the advantages of natural and beautiful coating, fire prevention, waterproof, air permeability, aging resistance, non-toxic and harmless, low cost, quick construction, etc 1 The material properties of silica alumina dry powder art coatings The silica alumina dry powder art coating is inorganic gel reaction produced by natural plant polymer and silicalic mineral material, and new gel is produced It is made of aggregates and inorganic pigments and does not use chemistry Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint House News: add the natural resin hym-25 to the active mineral material containing aluminosilicate to produce a very stable clay like inorganic cementitious material, which is the aluminosilicate exterior wall paint The coating has the advantages of natural and beautiful coating, fire prevention, waterproof, air permeability, aging resistance, non-toxic and harmless, low cost, quick construction, etc 1 The material properties of silicon aluminous dry powder art coatings The silica alumina dry powder artistic coating is a kind of inorganic gelling reaction produced by natural plant polymer and aluminosilicate mineral material, forming new gel, adding aggregate and inorganic pigment It is made of chemical latex, polyvinyl alcohol and chemical additives It has many advantages such as high strength, good stability, acid and alkali resistance, fire prevention, leakage prevention, aging resistance, environmental protection, no poison, low cost, simple process and so on This product can be life with buildings Its decoration performance and effect are better than latex paint, real stone paint, relief paint, marble like paint, etc., its durability can even be better than cement performance, its ecological and environmental protection performance is equivalent to the level of ancient buildings, and it is one of the most ecological, low-carbon, green, environmental protection, energy conservation, health, safety building decoration materials, which will lead the development direction of building decoration industry 2、 Comparison and difference between silica alumina dry powder art coatings and other coatings Solvent coatings are mainly oil based paints, which are mainly alcohols and benzene compounds Because they contain a lot of highly toxic and volatile harmful substances, they are very harmful to health and environment They are gradually replaced by water-soluble coatings The water-soluble coatings are made of chemical emulsion, and the chemical emulsion itself is based on water, such as styrene or butyl acrylate or single or multiple monomers at a certain temperature A synthetic resin emulsion formed by emulsification of initiator and emulsifier, no matter what chemical emulsion, except water, other raw materials, such as monomers and chemical AIDS, are all chemical raw materials Therefore, the emulsion contains not only volatile substances, such as benzene, ethylbenzene, toluene, xylene, formaldehyde, ammonia, nitrogen, etc., but also harmful to human body and environment (VOC At the same time, it also contains harmful heavy metals such as mercury, lead, chromium, cadmium and so on No matter mining, production, processing, construction, use and life end, the harmful substances are regarded as healthy "invisible killer" It has a long-term impact on human body, air, water, soil, and even food Some chemical emulsion and latex paint manufacturers are raw materials for their own interests And the so-called "chemical flavor Concealer" or aromatic agent is added to the coating to cover up the pungent smell of volatile toxic substances such as formaldehyde, ammonia, VOC, etc under the banner of environmental protection, the "zero VOC", "clean flavor paint" and "tasteless paint" are advocated to deceive consumers This kind of fake environmental protection coating, due to the role of chemical additives (chemical flavor Concealer or aromatic agent, etc.), can make the toxic substances not It is easy to volatilize as soon as possible, and its harm is greater and longer-term Beijing huanyimei Polymer Research Institute has developed a kind of hyd-27 reagent, which can hide formaldehyde, ammonia and VOC in latex paint for only about 30 yuan Chemical building materials have poor performance, high toxicity and complex technology Even if the exterior wall which costs hundreds of yuan / m2 for decoration is not used for several years, it will often appear cracking, hollowing, falling off, aging, pulverization and fading In addition to the poor stability and fast aging of the chemical materials themselves, these reasons are also related to the basic materials of the building wall, which are basically alkaline or strong alkaline, acidic atmospheric environment and other factors At present, the latex paint, real stone paint, relief paint and marble like paint mainly used for the exterior wall of the building are produced with a large number of chemical latex Because the chemical latex is afraid of acid and alkali, its construction process requirements are as follows It is necessary to seal the chemical latex solution at the base level After the coating is finished, to prevent the influence of acid rain on the performance of the coating, it is necessary to coat the top coat on the surface of the coating, and the sealing primer and the sealing finish are also produced by the chemical emulsion, which is also afraid of acid and alkali, and is easy to be aged It is difficult to resist the erosion of acid and alkali After painting, it will be eroded by acid rain Area, the pH value of rainwater once reached 4.1), which is one of the fundamental reasons for the cracks, hollowing, falling off, aging, chalking, color difference and fading of many building exterior walls 2 Inorganic cementitious materials and inorganic coatings In order to solve the problems of aging, powdering, peeling, cracking, fading and other common problems of architectural decoration engineering, the influence of toxic chemicals and heavy metals in the paint on human health and urban ecological environment, as well as important technical problems such as water and gas balance of buildings, leakage prevention of buildings, air permeability of building walls, etc., the research of Beijing huanyimei high polymer Institute The researchers used silica alumina and other mineral active materials to produce gelatin from polar groups of plant natural resins as a technological innovation The properties of the gel have the advantages of resistance to aging (over and over cement), leakage prevention, fire prevention, cracking prevention, environmental protection, no toxicity, applicability and simple construction 3 Difference between organic chemical coating and inorganic chemical cementitious coating Silicoaluminium dry powder art coating belongs to inorganic cementitious coating The biggest difference between silicoaluminium dry powder art coating and a large number of organic materials such as latex coating, real stone paint, marble like paint, etc with a large number of chemical emulsions and chemical AIDS is that chemical emulsions have fast film-forming but short acting time and poor stability Products with chemical resin as cementitious material basically change from stable state at the beginning to unstable state Some may change in quality in a few years or half a year This is mainly because the chemical material is an artificial synthesis technology, which is caused by its own instability The inorganic gelatinization material is stable, and its gel principle is to use the active substances and polar groups in the material to produce gel products through the action of water and air, which produces physical and chemical (acid and alkali) excitation reactions The difference between the inorganic gel and chemical gel is that after the chemical gel is film-forming, it is afraid of acid, alkali, water, cold, and sun In addition, the inorganic gel materials are not afraid of these On the contrary, water, gas, sunlight, heat and cold, acid and alkali, dry and wet are good for them, and will make them better and more stable In the case of base cement with more serious alkali and frost, the stability of the coating will not be affected, and the white alkali frost that can rise within 3-12 months will disappear by itself Therefore, the performance of inorganic coating will be better and more stable, and it can remain stable after decades, some even hundreds of years 3、 The application technology of silica alumina dry powder art coating in the exterior wall decoration engineering at present, the exterior wall decoration engineering in our country is basically based on plastering the anti crack mortar on the insulation material of the exterior wall insulation engineering, and using the exterior wall putty After leveling the wall surface, polishing and painting the sealing primer, the painting process needs more than five times The construction process is complex and time-consuming (the labor cost accounts for more than 70% of the project cost) Due to the large difference in the performance of the external wall coating, the external wall putty and the sealing primer, stable factors such as poor adhesion, unstable interface and other factors are easy to occur between the materials Due to hollowing, peeling, pulverization and falling off Silica alumina dry powder art coating is a kind of plant resin and mineral gel material It has strong adhesion, initial adhesion and thixotropy, and is easy to construct The silicon aluminum component in the coating and the cement mortar of the base course are the same-sex materials, the interface is easy to combine, and the bonding is firm and stable The service life of silica alumina dry powder art coating is five to ten times longer than that of the coating, and the working time can be saved by 50% The decorative effect and stability are better than that of emulsion paint, real stone paint, relief paint and imitation marble paint Silicon aluminum dry powder art coating is dry powder, which can be used by adding appropriate amount of water to mix evenly It can be directly sprayed, rolled, brushed or other coating methods on the cement-based wall surface It can make hundreds of, or even tens of thousands of different styles of decorative effects, as well as real stone paint, marble, ceramic tile , relief paint, even calligraphy works, mural works, landscape painting works, landscape painting works 4、 Construction technology of sialuminium dry powder art coating 1 Construction technology process on thermal insulation material → interface mortar → laying grid cloth, rivet reinforcement → anti crack mortar leveling → interface treatment, bottom coating → surface coating → surface treatment → surface treatment → wall base layer must be solid and flat without oil, powder, loose, floating dust, etc The base course is cement mortar plastering wall or anti crack mortar of thermal insulation layer As long as the base course has high strength and is basically flat, it can enter the construction procedure directly without external wall putty leveling 2 Construction process and procedure 1) after confirming that the base meets the construction conditions and requirements, first use the special sealing primer or primer (split lines, use the primer with color) to conduct the base sealing treatment (to prevent the base from returning to alkali) In case of white color, sealing primer is not required) 2) On the preset dividing line, stick the paper tape according to the process requirements 3) Open the sand wall coating package, mix it evenly with the electric hand drill agitator according to the proportion of powder: water = 1:0.3 ~ 0.4, and form the cement shape Adopt special spraying equipment similar to real stone paint and relief base material, evenly spray them on the wall base surface in 1-2 times, and other construction methods such as elastic coating and rolling coating can also be used 4) Remove the paper tape 5) When the coating surface is slightly dry to be free of touch, use steel trowel to gently compress it into relief shape 6) After the coating is completely dry, use the special finishing agent to brush the finishing 3 Precautions 1) the construction environment temperature should be about 25 ℃ 2) The construction must be carried out in sunny and windless weather with good lighting conditions 3) Unused materials must be kept in a moisture-proof and sealed manner 4) After construction, the coating shall not be exposed to water, rain, etc during the curing process of the coating and before the finishing agent is completely dry, so as to avoid the color of the coating from blooming Paint house is focused on coatings, diatom mud, paint coatings, coating technology, fire retardant coatings news and coatings,
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