Coating general knowledge: polyurethane waterproof coating sealing material

Core tips: basic properties and main characteristics of sealing materials: 1 Basic properties of sealing materials (1) The sealing material is paste like before curing, and becomes impermeable after curing with fluidity, which has water tightness and air tightness (2) It has good adhesion and cyclic property of tension and compression which is suitable for the base course to adapt to the fatigue damage of long-term expansion deformation (3) It has excellent weather resistance, high and low temperature resistance, high temperature non flowing, low temperature non cold brittleness and long service life (4) With good construction performance, it is easy to squeeze or embed Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Home of coatings: basic properties and main characteristics of sealing materials: 1 Basic properties of sealing materials (1) the sealing materials are paste like before curing and become non-permeable after curing with fluidity, with water tightness and air tightness (2) It has good adhesion and cyclic property of tension and compression which is suitable for the base course to adapt to the fatigue damage of long-term expansion deformation (3) It has excellent weather resistance, high and low temperature resistance, high temperature non flowing, low temperature non cold brittleness and long service life (4) With good construction performance, it is easy to squeeze or embed Good stability, non-toxic or low toxic products, easy to store 2 The main characteristics of sealing materials are as follows: (1) cyclic property of tension and compression: it reflects the sealing ability of sealing materials after cyclic tension and compression cycles due to joint displacement caused by temperature change in the use process; (2) Adhesive property: the adhesive property of synthetic polymer sealing materials is expressed by adhesive strength and elongation; the adhesive property of polymer modified asphalt sealing materials is expressed by tensile length and elongation at 25 ℃; heat resistance: the ability of materials to soften, deform and flow within a specified time under a certain temperature; (4) Construction degree: under a certain temperature, measure the subsidence of the instrument with a certain weight; or the extrusion speed under a specified pressure and temperature It is used to indicate the difficulty of construction; (5) flexibility: the material will be hard, brittle and greatly reduced in the negative temperature, which is represented by the negative temperature value The smaller the value is, the better the working performance of the material at low temperature 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,