Coating technology: Construction of two component polyurethane waterproof coating

Core tip: two component roll ester waterproof coating can be divided into tar type and non tar type The former is harmful to human body due to environmental pollution, and the Ministry of construction has listed No 27 as eliminated products Two component non tar polyurethane waterproof coating is composed of main agent and curing agent It can be used for construction and curing at normal temperature It is easy to operate It has good physical and mechanical properties, excellent waterproof, acid and alkali resistance, aging resistance and other properties It is suitable for waterproofing of basement, toilet room and other projects, as well as non exposed roof projects Construction process: 1 Clean the base course and thoroughly clean the mortar, pimple, dust, sundries, etc on the surface of the base course Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Coating home news: two component roll ester waterproof coating can be divided into tar type and non tar type The former is harmful to human body due to environmental pollution, and the Ministry of construction has listed No 27 as eliminated products Two component non tar polyurethane waterproof coating is composed of main agent and curing agent It can be used for construction and curing at normal temperature It is easy to operate It has good physical and mechanical properties, excellent waterproof, acid and alkali resistance, aging resistance and other properties It is suitable for waterproofing of basement, toilet room and other projects, as well as non exposed roof projects Construction process: 1 Clean the base course and thoroughly clean the mortar, pimple, dust and sundries on the surface of the base course 2 For the application of primer, the ingredients of primer shall be carried out according to the following proportion: component A: component B: diluent = 1:1.5:2 (mass ratio): 120: component A: component B: diluent = 1:2:2.5 (mass ratio) The stirred primer is applied on the surface of the base layer with a roller brush The coating amount is generally 0.1-0.2kg/m2, and the next process is construction after the primer is coated and dried for 8-24h 3 For the construction of waterproof coating, the proportioning proportion of waterproof layer: type 115 is component A: component B = 1:1.5; Type 120 is component A: component B = 1:2 Mix evenly with electric mixer, if the viscosity is too large, add appropriate diluent The special parts such as gutter, flashing, through pipe, internal and external corners shall be evenly applied with rubber scraper for polyurethane waterproof coating with uniform mixing, and then large-area construction shall be carried out from top to bottom, and the direction of adjacent two coats shall be perpendicular to each other The interval time is more than 36h in winter Before the next coating, the pores, hollows and scars of the previous coating shall be repaired, and the coating thickness shall be uniform When cement mortar is used as the protective layer for the construction of the protective layer of the waterproof layer, a large number of clean φ 2-3mm ballast shall be spread on the surface of the last coating to increase the adhesion between the waterproof layer and the cement mortar The ratio of cement and sand is 1:3 (mass ratio), and its thickness is plane 10 mm / facade 5 mm When concrete is used as protective layer, polyurethane film or asphalt felt shall be laid first, and then 150 fine aggregate concrete shall be poured and tamped When the reflective coating is used, the reflective coating shall be applied 15 days after the coating is cured Construction precautions: 1 Mixing bucket and construction tools shall be kept clean and tidy, and shall be cleaned with diluent before work 2 Polyurethane waterproof coating is a two-component one, which must be evenly mixed and completed within the specified time 3 During the construction of protective layer, it is not allowed to wear nail shoes Construction workers and materials shall be strictly prevented from puncturing the waterproof coating 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,