Common knowledge of coating: adjustment of properties in formulation of water-based coating -- scald resistance

It is suggested that the scald resistance reflects the degree of thermoplastic deformation resistance of film-forming materials, and sometimes involves the combustion resistance There are several ways to improve the scald resistance of the coating: 1) Select resin with appropriate glass transition temperature The lower the glass transition temperature is, the less heat resistant it will be However, there are serious problems in the low-temperature film-forming of films with high glass transition temperature, which should be paid special attention to 2) Crosslinking can significantly improve scald resistance The scald resistance of lightly crosslinked film will be greatly improved Wood paint is better to have heat resistance of 100 ℃ or higher Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coating home news: scald resistance reflects the degree of thermoplastic deformation resistance of film-forming materials, and sometimes involves combustion resistance There are several ways to improve the scald resistance of the coating: 1) the lower the glass temperature of the resin with appropriate glass temperature is, the less scald resistance it is Increasing the glass temperature is conducive to improving the scald resistance However, there are serious problems in the low-temperature film-forming of films with high glass transition temperature, which should be paid special attention to 2) Crosslinking can significantly improve the scalding resistance of slightly crosslinked paint film, and the scalding resistance will be significantly improved Wood paint is better to have a hot resistance of 100 ℃ or higher At this time, the system must be thermosetting, that is, fully crosslinked system The water-based polyurethane coating with oxygen cross-linking can obtain the coating film without deformation when heated by using polyisocyanate, aziridine compound or organosiloxane with active gene to connect the water-based coating with oryx or Oryx Due to the low glass transition temperature of the resin before crosslinking, good film-forming performance at low temperature is ensured 3) The ability to adjust the film thickness, such as the burn of cigarette butts, is not only related to the molecular structure of the film-forming material, but also related to the thermal conductivity of the film-forming material and the thickness of the film Good thermal conductivity and thin paint film are conducive to heat transfer, and can reduce the damage caused by burning Flame retardant can also change the scald resistance of water-based paint, but generally, the method of adding flame retardant is not used to improve the burning resistance of water-based wood paint For the water-based wood paint finish with the requirements of hot water resistance, boiling water resistance, heat-resistant cup, anti adhesion and so on, the formulation personnel can consider the use of water-based acrylic resin Due to the self crosslinking mechanism, the content of low molecular weight resin in the film-forming system is reduced, and the water-based acrylic resin overcomes the disadvantages of the common acrylic resin, which is hard, brittle and soft, sticky This makes the water-based acrylic resin have excellent heat resistance and anti adhesion ability, which can fully meet the performance requirements of water-based wood 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,