Coating knowledge: brief introduction of several waterproof coatings in China in recent years

Core tip: in recent years, China has made great progress in the development of waterproof materials It has developed ointment, coil material, solvent based viscous liquid, water-based emulsion and powdered waterproof material, and has been widely applied 　 1 Polyurethane waterproof coating "target = _blank > polyurethane waterproof coating is a kind of waterproof material with good comprehensive performance, which has been developed successfully in Japan Polyurethane waterproof coating can be divided into tar type and non tar type Tar polyurethane takes cheap and excellent coal tar as active filling material, which once occupied a leading position in the domestic market Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coatings home news: in recent years, China has made great progress in the development of waterproof materials, and has developed ointment, coil materials, solvent based viscous liquid, water-based emulsion and powder type waterproof materials, and has been widely applied 1 Polyurethane waterproof coating "target = _blank > polyurethane waterproof coating is a kind of waterproof material with good comprehensive performance, which has been developed successfully in Japan Polyurethane waterproof coating can be divided into tar type and non tar type Tar polyurethane takes cheap and excellent coal tar as active filling material, which once occupied a leading position in the domestic market However, coal tar is a kind of mixture with complex composition, and its active composition varies greatly with different coal types and coking processes When it is used, it is only mixed according to the set mix proportion and prepolymer, the product performance is not stable, and the aging resistance is poor, so it can only be used as non exposed waterproof coating In addition, coal tar contains a large number of anthracene, naphthalene, phenol volatile substances, which seriously pollute the environment and harm human health With the continuous improvement of people's requirements for environmental protection, the elimination of tar polyurethane is the general trend Non tar polyurethane mainly includes asphalt polyurethane Although other polyurethane has excellent performance, but its price is expensive, and it can not be widely used for a while, so asphalt polyurethane has been widely concerned As a filler, petroleum asphalt is added into polyurethane waterproof coating, which has no irritating smell of coal tar and less pollution; it has good water resistance and waterproof performance, which can prolong the aging time of products; the production equipment used is the same as coal tar, without additional equipment investment; the cost is low, so it has a good prospect of development and application 2 polymer flexible waterproof coating polymer flexible waterproof coating is a two component waterborne architectural waterproof coating made of polymer emulsion and cement as main raw material and added with other admixtures Move among force and soft properties, the coating has the characteristics of 'soft and soft' It has the advantages of polymer coating, such as elongation, waterproofing, and strength of hydraulic cement The ratio of polymer emulsion to cement can be adjusted to meet the requirements of flexibility and strength for different projects, and the construction method is convenient This kind of coating uses water as dispersant, which solves the environmental pollution and the harm to human health caused by the use of tar, asphalt and other solvent based waterproof coating So in recent years, it has developed rapidly at home and abroad, and become a new star in waterproof materials The superior performance of ML-006 series polymer flexible waterproof coating produced by Jinan Daxing waterproof material factory has been widely concerned and recognized by technical designers, businesses and construction units Its leading product ML-006 has many advantages and features that other waterproof materials cannot match The company's products have been included in the "recommended general Atlas of architectural design in Shandong Province" formulated by Shandong provincial standard design office 3 environmentally friendly silicone waterproof coating organic silicon chemical stability, hydrophobicity is good, anti-aging, durability is good, emulsion is water, generally does not affect the environment Silicone rubber waterproof coating, containing solvent, will cause certain impact on the environment In the less than a year, Shanghai Huasheng enterprise group has organized dozens of scientific and technological personnel to tackle key problems After hundreds of experiments, we have developed a new environment-friendly waterproof coating for the construction and decoration engineering The main feature of the product is that it has the advantages of general coating and overcomes the problems of cracking and cleaning of most coating products Its comprehensive performance is close to the international advanced level This kind of environmental protection elastic silicone waterproof coating is a kind of healthy coating with VDC content less than 5%, which is far superior to the national standard: excellent elasticity can effectively seal the gaps below 1.6mm; good weather resistance, UV resistance, ozone resistance, damp heat resistance, acid resistance, alkali resistance, salt resistance and chemical products, resistance to various oils, solvents resistance, extreme temperature resistance (50 ℃ ~ + 260 ℃) 。 The unique air permeability prevents the rain and snow from penetrating into the exterior wall, and the indoor moisture can be discharged to the outdoor The product construction is fast, without mixing, direct use, no need for primer, and the film forming time is short, only 4-8 hours 4 silicon acrylic outer wall coating silicone acrylic exterior wall coating is the abbreviation of silicone acrylic ester building exterior wall coating It is a new high-grade exterior wall coating, with excellent weatherability (life expectancy of more than 10 years), and pollution resistance Its latex coating has no toxic solvents, pollution-free and harmless to human body, and is in line with the current environmental friendly green building materials The requirement is the renewal of coating products Jilin University has successfully developed soap free silicon acrylic water-based exterior wall coating, which has high weatherability, high adhesion resistance, high color retention and low toxicity By soap free polymerization, the water resistance and scrub resistance of the film are effectively improved The emulsion is made of core shell polymethyl carbonate technology, so that latex particles have good wear resistance, weather resistance and minimum film forming temperature The thixotropy and aging resistance of the deep layer are effectively improved by adding nano fillers 5 Water based environmental protection bridge waterproof coating is a new type of bridge waterproof coating which is water-based, non-toxic and pollution-free, with high bonding strength, excellent elasticity, wide range of high and low temperature resistance and low price Developed by Qingdao Runbang chemical building materials Co., Ltd and put into mass production in October 2003 The product is produced by changing the traditional production process, using high-quality petroleum asphalt as the base material, rubber polymer material as the modifier, water as the medium, through catalysis, cross-linking, emulsification and other scientific processes The main advantages of the product are: the polymer formed by the rubber in the modified asphalt forms a continuous network, which is cross-linked to each other, so that the modified asphalt presents a polymer performance After the film is dry, it maintains the elasticity, low-temperature flexibility and aging resistance of the rubber, and has strong shear resistance, temperature resistance, frost resistance, chemical corrosion resistance, crack resistance, cold construction, fire protection, non-toxic and tasteless, no Environmental pollution and other advantages can meet the requirements of long-term dynamic load and pressure resistance of bridge deck The applicability of temperature difference is very wide The low temperature can reach - 30 ℃, and can withstand the temperature of asphalt concrete above 160 ℃ The product is not only an ideal waterproof material for bridge deck, but also the best material for pasting waterproof sheet asphalt tile Because of its good performance and low price, it will undoubtedly promote the development of building waterproof materials in China 6 Heat resistant waterproof coating this is the latest patented waterproof product from the United States The coating contains a patented micro bubble glass ball, which has numerous closed colloids It is a special resin with high performance that provides support for this kind of microbubble glass, which is the summation of polymer and copolymer It can not only be used in combination with flexible waterproof roll and rigid waterproof material, but also can be directly constructed in various base layers to independently play the good performance of waterproof and heat resistance When the material is used on metal objects, it is very flexible and closed, and can block leakage, heat insulation and rust prevention; when it is used on asphalt roof, it can reflect 90% of the sun energy, prevent asphalt degradation and extend its service life; when it is used on rigid waterproof roof, it can prevent concrete expansion, close fine cracks and gaps, prevent water penetration, and has excellent adhesion and elongation 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,