echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Coatings News > Paints and Coatings Market > Coating common sense: what is the contrast ratio of coating?

    Coating common sense: what is the contrast ratio of coating?

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Core tip: contrast ratio is the index used to evaluate the covering ability of products in the national standard The specific operation is to prepare 100% on the standard polyester film or black and white checkerboard Micron thick paint film is dried for 24 hours under laboratory conditions Polyester film is placed on black and white ceramic plates, and reflectance is measured by reflectance tester The reflectance ratio of blackboard and white plate is the contrast ratio The stronger the covering power of the product is, the smaller the data difference between the blackboard and the whiteboard is, and the closer the ratio is to 1 There is a certain difference between the dry and wet hiding power of coating products For high-grade products, the wet hiding power is generally better than the dry one 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: [news] the contrast rate is an index used to evaluate the covering ability of products in the national standard The specific operation is: prepare 100 μ m thick paint film on the standard polyester film or black-and-white checkerboard, dry it for 24 hours under laboratory conditions, and put the polyester film on black and white ceramics On the board, use the reflectance tester to measure the reflectance respectively The ratio of the reflectance data of the blackboard and the white board is the contrast ratio The stronger the covering power of the product is, the smaller the data difference between the blackboard and the whiteboard is, and the closer the ratio is to 1.0 There is a certain difference between the dry and wet covering power of coating products For high-grade products, the wet covering power is generally better than the dry covering power For low-grade products, it is just the opposite Therefore, the evaluation of the coating covering power can not only depend on the feeling during construction (the good and bad of the wet covering power), but also on the covering power after the film is dry The contrast rate reflects the dry covering power of the product, which can reflect the final use effect of the coating 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,
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.