Caitu shrinkage is the source of what caused: caitu _ caitu manufacturer - hair Steel Co., Ltd. Shandong Public | Published: 2014-8-23 | Views: 9 caitu shrinkage is caused by how a light whole crack, hemp fringes 1. Causes: uneven substrate, the board has a groove after painting bubbles stay in the groove, but after entering the curing oven, warming expansion bubble burst. 2. Shape: ◎ 3. Solution: reduce the film thickness; reduce viscosity; increase paint leveling; increasing the coating roller and support roller pressure. Second, paint thinner 1. divided into two two, thinner and slow drying agent (more common), slow drying agent is not suitable for rapid heating Boxing caitu, otherwise there will be needle-like craters. 2. Shape: ○ (under the microscope) needle-like 3. Solution: understanding is thinner characteristics, plus a reasonable use. Third, the board set the plate unreasonable temperature curing of the first paragraph 1. Tu Jing Wen played a decisive role in the first paragraph of about 170 ℃. 2. Shape: ditto 3. Solution: Set a reasonable temperature of the plate. Fourth, when the viscosity of the higher viscosity 1. caitu market, paint leveling poor. 2. :( dot shape) but not rupture or rupture to form a pinhole shape. 3. Solution: lower viscosity, reduced film thickness. Five, the paint containing water, oil immiscible liquids. 1. These debris by roller coating to the surface of color-coated plate, after curing baking evaporate. 2. Shape: Irregular 3. Solution: put an end to water, oil, paint easy to enter in the matter. (Ie, loss of light) phenomenon, using scanning electron microscopy and electrochemical methods for color-coated high gloss coated surface for certain appliances appliances caitu place after a certain time or partial surface gloss occurs in the processing and use of the process significantly reduced Analysis of surface morphology and chemical composition of the substrate surface after stripping, color-coated surface to determine the loss of light appliance defects are formed from the front surface of the substrate coated with oxide coating caused by salt spray test comparing the defects identified color-coated corrosion can have a serious impact, and made improvements to reduce loss of light surface defects occur appliances painted color plates in addition to strengthening the former process control, but also to avoid caitu stored in hot and humid environments in. Effect of curing condition on the performance of most of the coating is a color coating liquid coatings, a suitable application viscosity caitu specifications, typically under high shear viscosity at 0.5 ~ 1.0 Pa? S ranges. After construction, the liquid into a "dry" in the film, that is a solid film. The method of forming a coating film, there are many, the simplest is to use the viscosity of the polymer mixture of specified construction diluted to an appropriate solvent, coating on the substrate, heating the coating resin cross-linking reaction, with the evaporation of the solvent , a macromolecular coating solid film. Here, for example epoxy resin, curing simple principle expounded. Refers to both ends of the molecule of epoxy resin containing an organic polymer compound epoxy group, and contains a plurality of secondary hydroxyl groups, which can generate a crosslinking reaction and insoluble various types of curing agents, infusible three-dimensional net polymer structure. Color-coated steel color _ Jinhong Run (certified) _ Changsha caitu provided by Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry. Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry (www.bxjhr.com) (www.bxjhr.com) is a leader in Binzhou, board (with) wood, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Jinhong Run Steel leadership with the staff warmly welcome all inquiries negotiations to create a better future for the steel Jinhong Run. You can also access (www.bxjhr.com/supply_details_48173520.html), for more information about the company.