Coating classification: waterborne two-component polyurethane varnish for exterior wall covering

Core tip: Product Introduction: The water-based two-component polyurethane varnish for exterior wall cover uses water as the dispersion system, and the content of volatile organic solvent in the system is very low, which not only saves a lot of petroleum resources, eliminates the potential fire hazard in production, storage, transportation and construction, but also helps to protect the environment and the health of construction personnel, and has wide applicability and convenient construction It can be directly applied on the surface of incomplete dry substrate At the same time, it has the high performance characteristics of the solvent based two-component polyurethane coating Therefore, the water-based two-component polyurethane coating in the field of building coatings has 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 Home of coatings: Product Introduction: waterborne two-component polyurethane exterior wall Water is used as the dispersing system of varnish, and the content of volatile organic solvent in the system is very low, which not only saves a lot of petroleum resources, eliminates the hidden danger of fire in production, storage, transportation and construction, but also helps to protect the environment and the health of construction personnel, and has wide applicability and convenient construction It can be directly constructed on the surface of incomplete dry substrate, and overcomes the solvent type solvent At the same time, it has the high performance characteristics of solvent based two-component polyurethane coating Therefore, water-based two-component polyurethane coating has a broad development prospect in the field of building coatings Features: excellent physical and mechanical properties, chemical resistance and weather resistance; extensive adjustability of various properties; extremely low content of volatile organic solvents in the  system, saving oil resources,  eliminate fire hazards in production, storage, transportation and construction;  little environmental pollution, no damage to the health of construction personnel;  It can be directly applied on the surface of the substrate which is not completely dry, which overcomes the weakness of the solvent coating sensitive to water Ingredients: the water-based two-component polyurethane exterior wall coating varnish is composed of a and B components, B component is hydroxyl component, and a component is water-based isocyanate curing agent Product performance: test item: pure acrylic exterior wall coating elastic exterior wall coating (pigment volume concentration: 35%) water-based two-component polyurethane coating before and after finishing water-based two-component polyurethane coating after finishing one component silicon acrylic coating after finishing water-resistant (168h) no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change No change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change, no change NaOH (72h) lost light, lost light, lost light, lost light, lost light, resistant to 120 × gasoline (72h), no change, no change, resistant to UV accelerated aging for 1000h, grade 2 pulverization, grade 1 discoloration for 2000h, no pulverization, grade 1 discoloration for 1000h, grade 1 pulverization, grade 1 discoloration for 2000h, no pulverization, grade 1 discoloration for 2000h, no pulverization, grade 1 discoloration Construction method: brush coating, roller coating, ordinary spraying or airless spraying Paint mixing: the suitable ratio of component A and component B is 1-1.2:1 The construction environment: the construction temperature has a significant impact on the service life of the paint, the suitable construction temperature is 10-25 ℃, the relative humidity is less than 70% Construction is not allowed in windy weather, rainy days or rainy days Pay more attention to weather forecast during construction. Theoretical dosage: 0.2-0.35 kg / ㎡, coating for 2-3 times Tools and materials: ① spray gun ② air compressor ③ aqueous two-component polyurethane exterior wall varnish precautions: pay attention to spray varnish after the finish is completely dry (generally 2 days in sunny days) Pay attention to keep viscosity, air pressure and nozzle size consistent during construction, and pay attention to prevent sagging Clean the floating dust before covering The spraying shall be uniform and comprehensive without leakage Generally, the spraying shall be at least twice to achieve good effect Prepare in strict proportion, mix evenly and leave for 15 minutes before use It shall be used within 4 hours, and those over 4 hours shall not be used 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,