Paint knowledge: the history of the most complete latex paint problem answer! Must see!

Core tip: many friends are particularly concerned about the problem of the wall, because it's equivalent to the coat of the house! Once there's a problem, the beauty of what must be a big discount! Now let's briefly talk about the "Fourteen" problems of latex paint, and of course, there are also free solutions for you to understand your wall 1、 Cracking causes and solutions? Related reasons: the cracking caused by seasonal reasons is called normal cracking, which is often seen in the joints of ceiling lines and door frames So the warranty period of half a year or one year after decoration is to repair the quality loss caused by seasonal change These are caused by natural cracking Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: many friends are particularly concerned about the problem of the wall, because here is the equivalent of the house's coat! Once there is a problem, the beauty of what is definitely a big discount! Now let's simply say that the latex paint "Fourteen" problems often occur, of course, there are also free solutions, so that you can read your wall 1、 Cracking causes and solutions? Related reasons: the cracking caused by seasonal reasons is called normal cracking, which is often seen in the joints of ceiling lines and door frames So the warranty period of half a year or one year after decoration is to repair the quality loss caused by seasonal change These cracks due to natural cracks, after the repair of the decoration company again, flat as new, and not easy to crack again in the future The cracks caused by improper construction methods belong to abnormal cracks For example, the quality of the glue used in the base is not good, which is easy to separate the putty from the wall On the other hand, the putty is applied too thick, more than 5cm In the future, with the continuous evaporation of water in the wall, the wall painted with emulsion paint will also crack in a large area Solution: in this case, only shovel off the paint and base material, brush again, and stick kraft paper or mending tape, can we avoid unnecessary trouble and waste 2、 Solution to discoloration and fading? Related reasons: there are many reasons for discoloration and fading of paint surface, such as long sunshine time, crystallization of water-soluble salt on the wall surface, high alkali value in some walls, improper construction, etc Solution: different solutions should be considered for different reasons The most common way to avoid it is not to use latex paint and polyurethane paint at the same time The emulsion paint can be applied two days after the paint is applied (at 25 ℃), or the paint can be applied again after the emulsion paint is completely dry (7 days at 25 ℃) 3、 Peeling and peeling solution? Relevant reasons: the moisture in the wall makes the paint film separate from the wall, and the peeling phenomenon shall be solved before construction Solution: first observe before construction, if there is leakage, please ask relevant departments to solve it in time If it is a new house, the phenomenon of water evaporation from the wall is inevitable, and special treatment should be carried out It is suggested that the wall should be pretreated with durable and waterproof elastic putty, and then painted as usual, so as to avoid peeling and falling off 4、 Pulverization solution? Related reasons: the main reason for the paint surface pulverization is that the wall surface is not treated or constructed at low temperature Sometimes, too much water will also cause the emulsion paint to be powdered Specific method: if the wall surface is thoroughly treated before painting, the wall surface shall be painted with special wall putty and polished; then, the water-based or oil-based primer shall be painted once, and then the top coat shall be painted twice, so as to avoid this phenomenon 5、 Causes of wall surface blooming after applying emulsion paint? 1 Leakage and blooming: blooming due to uneven application during emulsion paint construction; 2 Alkali blooming: the putty used in base treatment is too alkaline, which damages the composition of emulsion paint and causes blooming; 3 Water blooming: the water content of base is too high and the drying degree is different, which results in blooming on the surface being applied; 4 Roller blooming: use inferior roller construction 6、 What is the reason for the yellowing of the wall after the application of emulsion paint? Under the condition of poor ventilation, the chemical reaction between the xylene component in the diluent and the component in the emulsion paint results in the yellowing of the wall 7、 Poor flow / leveling, i.e the paint film is not smooth after drying, which causes unsightly brush marks and roll marks after drying Possible cause: inferior paint is used Apply paint to "touch up" some dry painted areas Repainting or roller coating the dry coating area Improper rollers or inferior brushes were used Solution: use high-quality latex paints, which usually contain ingredients that improve leveling As a result, brush marks and roller marks can easily "flow" and form a smooth paint film When using the roller, make sure that the roller's gross length meets the requirements of the type of paint used It is important to use high quality brushes, which can cause poor flow / leveling of any paint 8、 What is the reason why the dry paint film can't cover or "cover" the painted surface? Possible reasons: 1 Inferior paint is used 2 Poor tools or incorrect rollers are used 3 Improper color mixing of base paint and color paste was used 4 Poor liquidity and leveling 5 The paint used is much lighter than the base material, or mainly contains organic pigments with low hiding power 6 The application rate of paint is higher than the specified value Solution: if the color of the base material is very deep or the pattern wallpaper, the primer should be applied before the finishing coat Better hiding power and leveling can be achieved by using high quality paint Use quality tools; if roller coating, use recommended roller fluff Follow the manufacturer's recommended coating rate; if using toner paint, choose the right base paint Where low hiding power organic color must be used, the primer shall be applied first 9、 What is the cause of mildew on the wall after applying emulsion paint? How to distinguish it? 1 Mildew on the surface: the main reason is poor ventilation and high humidity The organic matter on the surface of emulsion paint is easy to grow mildew; 2 The base course is moldy: due to the improper treatment of the putty on the base course and the residual organic matter, and the construction is not completed dry, which causes the base course to appear mildew and grow to the surface of emulsion paint; 10 What is the reason for the massive peeling off of the wall after the application of emulsion paint? 1 The putty on the base course is too loose; 2 If the emulsion paint is too thick, it is easy to cause the paint film to block and peel off (mostly at the corners) 11、 What is the reason why the wall surface can be peeled after applying emulsion paint? 1 The putty of the base layer is too loose and the strength and hardness are not enough, which leads to the insufficient adhesion, which is easy to cause the paint film to peel; 2 Excessive water is added to the putty to cause the surface of the putty to be powdered, and the surface emulsion paint is easy to peel off; 3 801 building glue added with 50% water can be used to brush the wall to strengthen the wall 12、 What are the causes of the visual color difference on the wall after the application of emulsion paint? 1 The different gloss of emulsion paint may cause the visual color difference; 2 The different dryness of the wall, the different dryness and wetness may cause the visual color difference; 3 The different light intensity and surrounding color may cause the visual color difference; 4 The grass-roots level is not smooth enough, which may cause the visual color difference 13、 How to brush emulsion paint on the old wall? What kind of performance will it have if it is not handled properly? How to deal with it? 1 The old wall must be cleaned before painting emulsion paint Clean up the old paint film on the wall, polish the wall with sandpaper, and clean up the grease, floating dust and dirt on the wall; 2 Do not apply putty on the emulsion paint surface of the old wall; 3 How to deal with the old wall: brush directly after polishing and cleaning, but do not need the primer; after the old wall is completely treated, re construct 14、 Which is the best way to brush, roll and spray emulsion paint? Brush: rough feel, obvious texture effect, material saving, traditional construction technology, very simple, easy to repair, slow construction progress; roll coating: smooth feel, certain texture, material saving, traditional construction technology, relatively simple, easy to repair, fast construction progress; Spraying: the hand feel is very smooth, the material is wasted, the modern construction process requires professional personnel to construct, and it is difficult to repair It is also difficult to construct in many colors, to protect the non brushing parts, and the construction progress is very fast Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,