Coating knowledge: environmental friendly one component polyurethane waterproof coating developed by Qingdao Energy Institute, Chinese Academy of Sciences

Core tip: at present, single component polyurethane waterproof coating has become the development direction of polyurethane waterproof coating due to its advantages of simple construction, but there are still problems such as large amount of unit area (> 2kg / m2), large amount of organic solvent to be used, and multiple application At present, mu Youbing, assistant researcher of bio based and biomimetic polymer team, has successfully developed two kinds of polyurethane waterproof coatings with high tensile strength and high elongation at break by elaborately designing the molecular structure of polyurethane resin, adjusting the arrangement of chain segments and the density of functional groups in the polymer, and has successfully realized the pilot test and engineering demonstration (see Figure 1) One of the coatings is environmentally friendly and insoluble 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 Home of coatings: at present, one component polyurethane waterproof coating has become the development direction of polyurethane waterproof coating due to its advantages such as simple construction, but there are still problems such as large consumption per unit area (> 2kg / m2), need to use a large number of organic solvents, need to brush many times, etc At present, mu Youbing, assistant researcher of bio based and biomimetic polymer team, has successfully developed two kinds of polyurethane waterproof coatings with high tensile strength and high elongation at break by elaborately designing the molecular structure of polyurethane resin, adjusting the arrangement of chain segments and the density of functional groups in the polymer, and has successfully realized the pilot test and engineering demonstration (see Figure 1) One of the coatings is environment-friendly solventless one component polyurethane coating (type I), which has good water dispersion performance When mixed with water (volume ratio polyurethane: water = 1:6), the coating is sprayed on the surface of the substrate After drying, the film with elongation at break greater than 1200% and tensile strength greater than 2.5MPa can be formed The other kind of coating is all hydrophobic solventless one component polyurethane coating (type II), which can be directly sprayed on the surface of the substrate in a proper wet state and cured (the curing time can be adjusted) The film has excellent adhesion with the surface of the substrate, the elongation at break is more than 2500%, and the tensile strength is more than 9Mpa [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Paint group: 92525666] coatings house is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coatings, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.