Coating classification: solid content of coating

Core tip: Introduction: The solid content of the coating refers to the ratio of the mass of the residue and the mass of the sample after heating and baking at a certain temperature, which is expressed by the mass fraction The standard is GB / T 1725-79 method for determination of solid content of coatings In the factory, there are two practical analytical methods: culture dish method and surface dish method Calculation formula: ω (solid content) = [(m1-m0) / M] × 100% Where: ω (solid content) - mass fraction of solid content in the sample, Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Introduction: the solid content of the coating refers to the ratio of the mass of the residue and the mass of the sample after heating and baking at a certain temperature, expressed in terms of the mass fraction The standard is GB / T 1725-79 method for determination of solid content of coatings In the factory, there are two practical analytical methods: culture dish method and surface dish method Calculation formula: ω (solid content) = [(m1-m0) / M] × 100% formula: ω (solid content) - mass fraction of solid content in sample,%; M0 - mass of container, G; M1 - mass of sample and container after baking, G; m - mass of sample, G Take the average value of two parallel tests as the measurement result Note: ① the sampling amount of different coating samples may be different The solid content is low, and the sampling amount should be small and more For electrophoretic coating, resin: 1.0-1.5g; bath solution: 2.0-2.5g; ultrafiltration: 10-15g ② See the table below for the relevant regulations of temperature measurement Paint baking temperature, coating name, baking temperature / temperature, nitrocellulose lacquer, perchloroethylene paint, acrylic paint, shellac paint 78-82 acetal glue 78-102 polyester paint, lacquer 148-152 water paint 158-162 polyimide paint 178-182 oil base paint, ester paint, asphalt paint, phenolic paint, amino paint, alkyd paint, epoxy paint, latex paint (emulsion), polyurethane paint 118-122 silicone paint In 1-2 hours, the temperature is increased from 120 to 180, and then it can be replaced by porcelain crucible or culture dish in the determination of 178-182 thermal insulation polyester paint and wire coating 198-202 Some methods adopt different heating methods such as preheating Measurement error: the difference between the two measured values shall not be greater than 3% of the average value, otherwise, it shall be re measured 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,