What if the exterior wall leaks? External wall transparent waterproof glue common problem and selection principle analysis.

original title: What about the leakage of the outer wall? External wall transparent waterproof glue common problem and selection principle analysis external blocking water to the inner wall will cause a series of damages such as moldy walls, wall skin peeling, is a common and headache in daily life. Considering that the current external wall is mostly tile finished and external wall maintenance is mostly high-altitude operation category, in order to achieve good waterproof effect and do not affect the decorative surface effect, is now the use of the market called "external wall transparent waterproof glue" products for waterproof maintenance practices more and more. What exactly is the product of the external wall transparent waterproof glue? What is its scope of application? What are the principles of selection... This paper to the current market share of high acrylic emulsion-type external wall transparent waterproof glue to you in detail.multi-functional transparent waterproof glueon the external wall transparent waterproof gluethe outer wall transparent waterproof glue, colorless transparent, without affecting the external wall decorative surface can achieve the purpose of waterproofing. According to the film base material, the current market of such products can be broadly divided into: water-based acrylic, water-based epoxy, polyurethane or Tianmen dinine system polyurea. , acryl acid emulsion as the base material, add film additives, thickeners and other modified additives mixed dispersed acrylic external wall transparent waterproof glue, because of water-based environmental protection, technical maturity, low requirements for the substrate, moisture-temperature surface construction, moderate price and other advantages, more application. The vast majority of construction personnel will choose acrylic products for external wall leakage repair.the external wall transparent waterproof glue is suitable for which leakage situation of the treatment? . No matter what kind of external wall transparent waterproof glue, usually only applicable to the non-falling brick, skin and other leakage degree of light external wall treatment, directly waterproof external surface can be. For the leakage of serious, or due to structural defects caused by external wall leakage is not recommended to use the external wall transparent waterproof glue, which usually needs to remove the decorative layer, re-set the waterproof layer, and even need to use high-pressure slurry to strengthen the structural defects of the site of reinforcement and waterproof.common problems and selection principles acrylic emulsion-type external wall transparent waterproof adhesive due to the different formula of each manufacturer, material quality is also uneven. It is time to analyze the causes of common problems in the process of use, with a view to providing a reference basis for users to choose such products.multi-functional transparent waterproof coatingproblemafter the construction of waterproof coating film was completed at first all normal, waterproof and transparent color, but after a period of time the coating film appeared yellow, affecting the aesthetics.the cause analysis: the production of raw material acrylic emulsion resistance to ultraviolet light is poor, resulting in yellowing. At present, the production of transparent waterproof water-based acrylic emulsion can be divided into phenyl propylene emulsion, pure propylene emulsion and silicone emulsion, their UV resistance in turn is silicone propylene and pure propylene, corresponding, siliconpropee emulsion is also the highest price of the three, pure propylene second, phenyl propylce the cheapest. Users can ask manufacturers or consult the product description, to find out the type of film base material, according to their own needs and budget to make a reasonable choice.problem twowaterproof coating film summer sticky dust, blackened, seriously affect the appearance.reason analysis: the production of acrylic emulsion Tg value (glass transition temperature) is too low, resulting in the coating film in the actual ambient temperature will be from high-bounce to sticky current, resulting in sticky, sticky dust, and finally, the waterproof coating film to see blackened.problem threewater-resistant coating film after the rain whitening, but after the sun exposure and then returned to the transparent state.reason analysis: on the one hand may be caused by the refraction of light after water enters the waterproof coating film, on the other hand, it may be that water destroys the coating internal structure, the above two problems can be attributed to poor water resistance. Therefore, the whitening film of water through the sun, the evaporation of water will be restored to the original condition.to avoid the appearance of whitening phenomenon, to do everything possible to prevent moisture into the waterproof coating film, which requires the selection of raw materials in the production of sufficient efforts: the selection of two oleic acid emulsionmustbe good water resistance. try to choose the low water absorption of thickeners, plasticizers and other additives. the selection of latex particles up to nano-scale acrylic emulsion, to increase the film density. based on many ordinary users may not know much about the composition of the production formula and the production process, so it is recommended that you buy small packaging to use and test water before large areas of use. multi-functional transparent waterproof coating problem four after a period of time, waterproof coating film appeared drum, fall off phenomenon. the cause analysis: waterproof coating film is not breathable, indoor water vapor through the wall will be coated film up. Therefore, in the selection of external wall transparent waterproof glue, we need to pay attention to the material after the film must have waterproof but breathable function. problem five a year and a half, waterproof coating film appeared powdered off phenomenon, lost waterproof function. reason analysis: poor weather resistance of waterproof coating film, after a long period of ultraviolet radiation, sun and rain, accelerate aging, resulting in the phenomenon of powdering, loss of waterproof function. In general, silicone emulsion transparent waterproof glue than phenyl emulsion and pure propylene emulsion transparent waterproof glue weatherresistance is better. of course there are a large number of waterproof guerrillas on the market using polymer cement (commonly known as JS) with emulsion as transparent waterproof glue, after the use of generally two or three months will be exposed quality problems, this behavior is obviously a fake user, need to be vigilant. for the use of transparent waterproof glue general manufacturers packaging and instructions will have a detailed explanation, not detailed here. The content written in this article may not cover all the problems that users usually encounter, but for the user to choose the external wall transparent waterproof glue this kind of products or play a good reference role.
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