Coating technology: common problems in coating - Crocodile crack

Core tip: in the coating process, regular cracks similar to crocodile pieces appear on the surface of the paint film, which is called crocodile cracks The causes of alligator split are as follows: 1 The film-forming agent in latex paint is not enough, the weather is too cold; 2 The coating with high hardness (such as alkyd enamel) is applied on the coating with strong flexibility (such as emulsion paint); 3 When the primer is not dry, apply the top coat; 4 The oil-based coating is naturally aged due to the fluctuation of temperature; the continuous expansion leads to the loss of elasticity of the coating resolvent: Remove the old paint film completely and polish the surface Large area construction 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 Paint Home News: in paint coating, regular cracks similar to crocodile pieces appear on the surface of paint film, which is called crocodile cracks The causes of crocodile crack: 1 The film forming AIDS in latex paint are not enough, and the weather is too cold; 2 The coating with high hardness (such as alkyd enamel) is applied on the coating with strong flexibility (such as latex paint); 3 The top coating is applied when the primer is not dry; 4 The oil coating is naturally aged due to the fluctuation of temperature; and the continuous expansion leads to the loss of elasticity of the coating Solution: thoroughly remove the old paint film and polish the surface In large-scale construction, the hot spray gun can be used to improve the construction efficiency The surface shall be primed with high-quality emulsion paint or oil primer, and then coated with high-quality external emulsion paint 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,