![]() Atomic and molecular compositions of the different debased regions revealed two possible degradation mechanisms. ![]() Different samples exhibiting different levels of degradation were selected upon visual observations and analyzed by synchrotron-based microanalytical techniques. This work is focused on the blackening of red cinnabar paintings coated on a sparry calcite mortar. In the specific case of cinnabar (HgS)-based red pigment, a photoinduced conversion into black metacinnabar is usually suspected. The origins of this darkening degradation are not clearly identified yet and remain a major issue for curators. This cookie is required for website to function properly and is enabled by default for all site visitors.Red Pompeian paintings, very famous for their deep intensity, are currently suffering from darkening. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookies is used to store the user consent for the cookies in the category "Necessary". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Advertisement". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. Need the latest impact testing equipment? Want to determine the softening point and heat deflection properties of your products? Ray-Ran has the equipment you need at competitive prices. Now our expert engineers are ready to help – they’ll work with you to find the best machines to put your samples – and finished product – to the test! Our cutting presses strip samples from sheet material, while our milling machines make light work of thicker sheets and pipes up to 100mm. We supply devices that prepare samples from raw material or sheet form, molding small dumbbell samples from pellets and flakes. Our sample preparation equipment is some of the best in the business. Starting with instruments to test the raw materials – in pellet, flake, or fibre form for bulk density and pourability – our product range diversifies to offer density, MFI, or MVR testing. It’s fairly safe to assume that high quality components deliver finely tuned precision products. Our ISO 9001:2015 accredited process begins with a thorough review of the requirement and a comparison of the best materials and components needed for the project. Quality processes lead to quality products They then use their specialist knowledge to drive assignments forward from initial concept through to design and final manufacture. Our people take the time to understand the diverse needs of a project. We feel that the best mechanical, electrical, and software engineers are always listening and forever learning. We work with many different types of companies across multiple industries – that’s why our team is packed with exceptional technical experts. And if you need something bespoke, our engineers thrive on the opportunity to create a unique solution. This allows us to support them on the most challenging project deadlines. With so many tried-and-tested, reliable instruments primed and ready for manufacture from our global factories, we’re able to maintain complete control over lead times. In fact, we have more than 40 multi-purpose options in our ever-growing portfolio. We produce lots of great products in-house. Plastics industry-leading product portfolio ![]() That’s why we are now equally competent in delivering a range of solutions – from delivering testing equipment for hospital-bound prosthetic joints to creating new technology to empower the dynamic recycling industry, we’re here to support our customers. So, a commitment to innovation, and a desire to push the boundaries of what is possible, has been key to the Ray-Ran success story. The plastics and polymer space is always changing. ![]() Our company is now recognized as a world-leader in the production of raw materials evaluation, sample and component testing, and test sample preparation solutions. Ray-Ran’s quality control experts have been manufacturing innovative precision products for the plastics and polymer industries for over 40 years. Four decades of quality control expertise ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |