The Research On Insoluble Inorganic Salt Basic Zinc Carbonate Product As Wood Antiseptic

The wood is an important material for human production and life. With the improvement of living standards, people are increasing for the demand of wood. The harvesting of forest resources is very limited in China. Becasuse the wood resources.is relative short, the supply and demand Contradictions of timber is very prominent. The preservative treatment of wood can extend the service life of wood products. The preservative treatment of wood is one important way to save wood and protect forest resources。At present our country uses the antiseptic is mainly CCA,the antisepsis oil,boron matches a thing etc, but the most of antiseptics have endanger very greatly to the mankind and the environment.The common inorganic salt antiseptics eight boric acid sodium antisepsis performances is good, but it isn't anti-runs off. The inorganic salts antiseptics are easy to the lumber.The craft is simple. And inorganic salt antiseptics tapped and developed are still few, therefore it is very necessary to search new model inorganic salt timber antiseptics. This text through investigateing a kind of new model not-water-soluble inorganic salt, aimemake it fill inner in the timber in order to expect to improve a timber defend mildewed performance by the antisepsis..This topic takes not- water-soluble inorganic zine salt product as antiseptic to prevent penicillium citrinum and aspergillus Niger to carry on indoor experimental investigations.With the populus Canadensis and Pinus massoniana as try materials, this experiment adoptions double to permeate and two immersion method to fill sodium carbonate and zinc chlorides two kinds of different inorganic salt solution. The zine ion and carbonic acid radix ion of dipping into the timber combine, in the afterbirth chamber of the timber micro Xian silk gap and tube afterbirth born hard solid compoundp alkali type carbonic acid zine. Make to fill a great deal of inorganic matter in the timber thus. Through a quadrature test we confirm the best back-fill condition and carry on examination vs the hardness timber that are handled and that don't be handled. In recent years, the searches that the concerning timber immersion craft have been more, but the search of an immersion permeates actual process has been very few. Therefore the test investigates further to increase specific gravity in relate to with time and talk about inorganic salt to adsorb process in the timber.. We create a theory pattern that matches the timber non- steady state to permeate actual process. Finally under the best craft conditions, tried material will be filled and then carry on defending mildewed test in terms of national standard. Test result enunciation:(1) the best immersion craft condition of inorganic salt is temperature 30℃, the ZnCl2 solution concentration 25%, and the Na2CO3 solution concentration 25%. Under this craft condition Yang Mu and pine's Increasing the specific gravity had better and can reach to 28.3% and18.6% respectively.(2) The trying material hardness handled than never handled have enhancement.(3) During the period of investigating and increasing specific gravity test with the change curve of time, we use data analysis software of origin to fit equation and know the timber is in the solution of adsorb curve to present a S type. The solution at the double to osmosis in the timber mainly is because of timber inside outside solution concentration bad result in. Therefore the adsorbing process can be used an S curve present and it is belong to many molecule layers to adsorb a form, and increasing the relation of specific gravity and time can be voiced with the s curve equation.(4) Defend mildewed test be under the best craft condition tried the pine that the agent once handled by the chemistry, The Yang Mu test block mildewed changes the degree is very small, have almost to have no fungi to invade to dye, the anti- mildewed effect reaches to above 80%, The test block mildewed that didn't handle changes rate to all reach to 4 stages. The black song mildewed and green mildewed big area overalies test block, Should have no machine zine salt low poison,Vs environment amity and have an anti- to run off sex.Meet the request that the new model defends a mildewed agent.