chemical color on wood surface

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).【Get Price】

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.【Get Price】

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 μm) 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【Get Price】

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【Get Price】

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 any extra resin or oil in the wood resists this action; and of course when you add oil to the surface as regular maintenance you are preventing the【Get Price】

the effects of wood bleaching chemicals on the - citeseerx

while there are many materials available the two most common chemicals used as wood bleaching agents are sodium hydroxide and hydrogen peroxide. the aims of bleaching on the wood surface before finishing are as follows (6):. – to obtain a more uniform color or remove dark streaks within a panel or other assembled【Get Price】

surface chemical and color characterization of

surface chemical and color characterization of juvenile tectona grandis wood subjected to steam-drying treatments. alexander berrocal1 róger moya1 ? maría rodriguez-solis1 ricardo starbird2 freddy mu?oz1. + more information. 1escuela de【Get Price】

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【Get Price】

home clinic; bleaching wood: two ways to get down to the nitty-gritty

mar 30 1986 before using a wood bleach it is essential that all of the old varnish paint sealer or other surface coating be completely removed and the wood stripped clean. for this you can use a chemical paint and varnish remover or you can do it by scraping and sanding - but it must be done thoroughly. if even the【Get Price】

instrumental measurement helps wood manufacturers produce

apr 14 2017 different minerals and chemicals in water soil and air in the tree's environment can affect the final color of its wood. also various stresses in the life of the tree—such a strong wind events droughts or fires—can affect the wood's color as well. not only does the natural color of wood differ but differences in【Get Price】

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【Get Price】

3 ways to bleach wood - wikihow

since the chemicals in bleach are highly corrosive you do not want any to make contact with your or your household items. to bleach wood. 4. apply varnish or stain remover with a rag or brush. varnish or stain remover are used to remove any paint or finish from wood. it's important to start【Get Price】

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.【Get Price】

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)【Get Price】

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【Get Price】

klean strip project: remove wood stain

after 15-30 minutes you should start to see the chemical reaction happening. the paint will start to bubble up and swell and this will show that the finish is separating itself from the surface. scrape a small test area to see if the finish is softened and ready for removal. in stubborn spots you could also use the plastic scraper【Get Price】

the idiot's guide to refinishing wood furniture zing blog by

apr 21 2012 most of the time secondhand wooden furniture might need a little refinishing but there's nothing like watching the old turn new like the way antique wooden chemical strippers also known as paint and finish strippers are the most efficient products for removing paint and varnish from wooden furniture.【Get Price】

refinish wood furniture - lowe's

chemical strippers - commonly called paint strippers - are an effective means of removing paint and varnish from wood furniture or projects. using these chemicals is probably the fastest and easiest method for most people. despite what you may read on the back of a can if you want to do a really good job some sanding【Get Price】

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 Price】

wood sorting by chemical colour imaging perception park

as it can be seen the bluish color corresponds to the spectral information of wooden parts while the other objects are colored differently. the part in the lower right doesn't hold much spectroscopic information caused by the chemistry of the part – what can be seen is a reflection of the mirroring surface. also of interest is the【Get Price】