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D523-08 Standard text method for specular gloss
This standard is issued under the fixed designation D523; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval . A superscripl epsilon indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense . 1.Scope This test method covers the measurement of theRead More …
Out-gas and adhesion problems in powder coat zinc casting
zinc casting can be powder coated. A cast part will have porosity that may cause blemishes in the coating at high temperature. Air that is trapped near the surface may expand and rupture the film during the cure process. There are several ways to mitigate the issue. You can preheat the part to drive off some of the trapped air that causes the problem. Heat the part to a temperature about 50°F greater than the cure temperature, cool it down, andRead More …
Introduction of Plasticizers in Coating Formulations
Plasticizers are used to control the film formation process of coatings based on physically drying film forming materials. Proper film formation is essential in order to meet demands on specific coating properties such as dry film appearance, substrate adhesion, elasticity, in combination with high level of hardness at the same time. Plasticizers function by reducing film formation temperature and elasticize the coating; plasticizers work by embedding themselves between the chains of polymers, spacing them apart (increasing the “free volume”), andRead More …
Elements of a burning explosion of powder coating
The following aspects are the factors that cause the burning explosion of powder coating: (A) The dust concentration exceeds the lower limit For these reasons, resulting in the powder room or workshop dust concentrations exceed the lower explosive limit, so that the formation of the main conditions of the powder combustion and explosion, if moderate sources of ignition, it is very likely to produce combustion and explosion. (B) Powder and paint shop to mix In some factories, due to lessRead More …
Micro-particles of powder coatings to optimize the coating process
Japanese paint company developed an average particle size range between 20 ~ 40μm particles of powder coatings has been patented, ready to officially expand its market. The powder coating is the durability of good varieties, and the appearance of the coating is less than the solvent-based paint. In general, the smaller the powder particle size, and its aesthetic appearance of the coating, the better, but more than one of content than the average particle size of micro-powder coating application efficiency willRead More …
Epoxy-based coatings can be named two part epoxy coatings or used as a powder coating
Epoxy is a copolymer which is obtained by the reticulation of an epoxide (resin) with a polyamine (hardener). They are well-known for their high level of adhesion, especially on metal, high chemical and thermal resistance, and excellent electrical insulation ability. Epoxy formulations are therefore a preferred solution for many electrical parts and electronics (e.g: coil coating, solder mask on circuit boards). Overall epoxy coatings are more expensive than other systems like Alkyd or Acrylic, but they also show higher performances. On the other hand epoxy coatings alwaysRead More …
Quality Certification for MDF powder coating
MDF powder coating needs what level of quality is ultimately the customer decides. Customers a variety of requirements for MDF powder coating is very important. For the production of TV cabinets, monitors, bathroom furniture or cabinet doors, MDF coating is very different. Decided to use what powder, what quality MDF and paint line design, you must first find out the customer’s quality requirements. When required to achieve high-quality MDF powder coating, we have to use the most active high-performance powder,Read More …
Powder coating line has been proven to be the most important factor to obtain high-quality MDF powder coating.
Powder coating line has been proven to be the most important factor to obtain high-quality MDF powder coating. Unfortunately, the small metal surface powder coating company, if you want the old metal powder coating production lines to obtain high-quality MDF powder coating is impossible. The most important part of the spraying production line oven technology oven paint melting. If the thermal curing powder chemical curing. To remember is that the low thermal conductivity of the MDF. Therefore, the design ofRead More …
Fully understanding performance of MDF is required before coating
Powder paint spraying spraying the metal surface has been very mature, very stable and have a good level of control. MDF powder coating and metal surface powder coating in order to understand why a big difference, we must know the inherent characteristics of the MDF. People often think that the main difference between the metal and the MDF is the electrical conductivity. In terms of the absolute conductivity value, this may be correct; However, it is not MDF powder coatingRead More …
Challenges for MDF powder coating
China’s fiberboard annual output of more than one hundred million cubic meters. MDF (medium density fiberboard), the annual output of about 30 million cubic meters of 16mm specifications operator, light MDF there are about 1.8 billion square meters. With the technological development outside of MDF fiberboard such as popcorn board, etc. can also be powder coating. Expected to have a potential market of hundreds of thousands of tons of powder volume. In other words, the wood panels powder coating hasRead More …
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