Chemical Bleaching of Wood and Its Aging - DiVA Jun 1, 2012 . This paper investigates chemical bleaching of wood and its ageing to make specie specific recommendations on which bleaching solutions to use when color adjusting veneer for furniture restoration. In more detail, chemical bleaching of European walnut (Juglans regia), Rio rosewood (Dalbergia nigra)..
Color and surface chemistry changes of extracted wood flour after . Oct 23, 2013 . Abstract To investigate the effect of heat on color and surface chemistry of wood flour (WF), unextracted, extracted and delignified samples of commercial WF were heated at 120 C for 24 h and analyzed by colorimetry, diffuse reflectance visible. (DRV), attenuated total reflectance Fourier transform infrared..
chemical treatment to improve wood finishing - Wood and Fiber . mosphere, especially oxygen. This leads to photochemical degradation of wood surface, resulting in color changes as a result of chem- ical changes in the wood components. The change in the wood color with sunlight is due to chemical breakdown (photo-oxidation) of lignin and wood extractives (Hon and Feist. 1980a)
Color Matching Wood is a Waiting Game - J Gibson McIlvain Dec 5, 2017 . Whether you understand the chemistry behind wood color changes or not, we have to accept that it will happen and finding a color match may just be waiting for the change. . Another point to consider is that since the sun is actually drying the wood, you can expect to see tiny surface cracks (called checks)
Enhance the Appearance of Wood With Stains TheFinishingStore Jul 7, 2016 . Pigment particles lodge in the pores and scratches on a wood surface, exaggerating grain differences. . Sometimes you'll read about people using various chemicals to color wood - potassium dichromate, ammonium hydroxide, sodium hydroxide, along with a range of other suspicious sounding names
Causes of color changes in wood during drying | SpringerLink Even when wood is chosen for its structural qualities, attractive and decorative colors are usually an important factor. In many applications, particularly in furniture, decorative products, decorative veneers and flooring, accurate matching of the color of different samples is required. . wood discoloration wood chemistry drying
Get the Color Out With Wood Bleach - WOOD Magazine When it comes to altering the color of wood, woodworkers routinely turn to stains to give wood more-or a slightly different-color. . Once mixed, a chemical reaction begins, wherein the hydrogen peroxide, an oxidizer, acts to neutralize the caustic sodium hydroxide. . Keep the surface uniformly wet to minimize streaking
home clinic; bleaching wood: two ways to get down to the nitty-gritty Mar 30, 1986 . The only effective way to lighten the color of wood after it has been stripped of all surface coatings is to use a wood bleach. Sanding does help . However, for very dark stains, or for lightening the color of a naturally dark wood, one of the two-solution chemical bleaches will work much better. When working..
How to Repair Acetone Damaged Wood | Home Guides | SF Gate It's also an industrial chemical used in lacquers, stains and as a thinning agent. It's colorless, has a light odor and is highly flammable. It can damage finished surfaces on contact by dissolving a small area. If acetone is spilled on wood, the damage is almost always isolated to the finish. Repair techniques for acetone..
How to repair wood furniture surface from chemical blemish? - Home . May 9, 2016 . This looks like solvent peeled up the urethane. I don't think you will have great success coloring it. The best way to do this is to re-finish the entire top of the table. It's not as bad as it sounds, but if you haven't done anything like that before, then get a professional to do it. Experience is necessary. The first..
Colour and chemical changes of the lime wood surface due to CO2 . Dec 1, 2014 . The dry surface of lime wood (Tilia vulgaris L.) was irradiated with the CO2 laser beam (wavelength of 10.6 渭m) at different exposures (expressed as the irradiation dose). Colour changes were monitored by the spectrophotometer, chemical changes were observed by the ATR-FTIR spectroscopy and..
Wood finishing - Wikipedia Wood finishing refers to the process of refining or protecting a wooden surface, especially in the production of furniture where typically it represents between 5 and 30% of manufacturing costs. Finishing is the final step of the manufacturing process that gives wood surfaces desirable characteristics, including enhanced..
understanding wood discoloration helps maximize wood profits color patterns. Wood discolorations mainly cause a cosmetic, surface damage but because the surface is the visible part of wood such discolorations can have an . Chemical. * Brownstain. MICROBIAL DISCOLORATIONS. Sapstain: The most obvious form of discolorations, called sapstain or bluestain, is caused by the..
Removing Stains and Discoloration From Wooden Furniture: Tips . In this article, we'll discuss this and other simple techniques to help you remove stains, blushing, and other discoloration from the surfaces of wooden furniture. Any repair that involves . Repeat this procedure until you're satisfied with the color; then let the stain dry according to the manufacturer's instructions. Lightly buff the..
Wood stain - Wikipedia Much like the dyeing or staining of fabric, wood stain is designed to add color to the substrate (wood and other materials) while leaving some of the substrate still visible. Transparent varnishes or surface films are applied afterwards. In principle, stains do not provide a durable surface coating or film. However, because the..
Chemical Stains Rather than dying the fibers (as with aniline dyes) or putting fine pigment particles on the surface (as with conventional "stains") a chemical stain reacts with the natural tannin in the wood to produce a brown to reddish brown. The depth of the color that can be achieved is stunning. The final color of aniline-dyed woods can..
Light-induced color changes and chemical modification of treated . The aim of this work is to study the surface modifications of chestnut (Castanea sativa Mill.) wood by reflectance spectrophotometry and Fourier transform infrared spectroscopy (FTIR) in order to understand the mechanisms that cause changes and to suggest possible solutions to avoid degradation phenomena
wood research colour changes in wood surfaces modified . - teilar.gr protective agents is trying to keep the colour of wood as natural as possible. Technological progress has been made with the development of new, anti-UV surface compounds, which offer significant benefits compared to currently used UV absorbers (Hayoz et al. 2003). Although significant chemical differences exist..
Refinish Your Wood Furniture - True Value Projects Oil-based stains penetrate the wood without raising the grain. However, they give off fumes causing a strong odor. Water-based stains are more eco-friendly and offer easy cleanup with soap and water. No matter what, don't use deck stain on furniture. Consider the color or shade of stain to use according the room size
Hardwood Flooring: Finish, Stain, Decorative Treatments - The Spruce Oct 23, 2017 . Hardwood Floor Surface Treatments. Stains: These consist of a variety of color changing chemicals which can soak down into the surface of hardwood planks, and tint them from within. These are often coated with a protective above surface finish treatment.The advantage of stains is that they color the wood..