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Dołączył: 13 Gru 2010
Posty: 522
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Skąd: England
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 Wysłany: Czw 11:43, 30 Gru 2010 Temat postu: Transparent wood matt Varnish _985 |
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Transparent wood matt Varnish
Its smaller size, the coating surface smooth feel, which is the best choice. 2.2 Transparency of wax on wax of the extinction efficiency was lower than that of silica matting, but it can significantly improve the surface properties of the coating,[link widoczny dla zalogowanych], such as increased wear resistance, increase scratch resistance and improve the surface smoothness and so,[link widoczny dla zalogowanych], Guchang and silica powder with the use of extinction. Paint often used are micronized wax. Experiment, transparent wood varnish matt formula unchanged, only changing the type of wax, and the results shown in Table 6. Table 6 wax effects on the gloss and transparency can be seen from Table 6: Different types of wax the coating transparency is different, and the other different types of wax the extinction efficiency and the degree of coating surface properties are different, should be integrated be considered. The 4th is a polyethylene wax / PTFE wax mixture, can significantly improve the coating surface slip and scratch resistance, and high transparency, so as the better choice. 2_3 transparency of resin, some resin relatively easy to extinction, such as nitro cellulose, and some relatively Nan Xiao optical resin, such as the polyurethane coating. Therefore, we maintain a transparent matt wood varnish recipe the same, only change the alkyd paint tree 6 Shanghai Volume 43 types of fat (the amount of pure solid alkyd constant), and the results shown in Table 7. Table 7 resin for gloss and transparency effects can be seen from Table 7: the transparency of alkyd type had no significant effect on the coating, but different extinction of alkyd resins there is a big difference. Therefore, in the same gloss, the choice of extinction and good alkyd resin powder can reduce the amount of extinction to increase transparency. The 5th is short oil alkyd resin tall oil alkyd resins, are easy to extinction, while its good resistance to yellowing is also very suitable as Matt Wood with resin. 2.4 Transparency of curing agent on the high transparency of the wood with matt varnish curing agent used TDI / TMP adduct, TDI trimer and so on. TDI trimer curing of the coating more brittle, Guchang and the TDI / TMP adduct to fight with. We mainly from the amount and type of curing agent both to examine the impact of the transparency of the coating. 2.4.1 the amount of curing agent on the transparency of the TDI / TMP adduct curing agent, for example, transparent matt wood varnish recipe the same, just change the amount of curing agent, and the results shown in Table 8. Table 8, the amount of curing agent on the impact of transparency can be seen from Table 8: the amount of curing agent will result in different gloss coating different, in the same luster, the appropriate reduction in the amount of curing agent can reduce the amount of matting, which increase transparency. 2.4.2 types of curing agents on the transparency effects (Table 9) Table 9 types of curing agents on the transparency of the number of light curing rake Ze ~ 60 degrees through the sun and the moon can be seen from Table 9: TDI trimer,[link widoczny dla zalogowanych], although they may be greatly reduced the amount of matting, but the film will cause a decline in the transparency and should therefore be carefully considered. 2.5 Transparency of additives on the film to get a good look and better performance such as the construction and transparent matte varnish wood is inevitable to join wetting dispersant, defoamer, leveling agent. However, some additives are mainly acrylic defoamer and leveling agent impact on the transparency, for example, a 052 Defoamer BYK, BYK 354 leveling agent is sometimes a result of poor compatibility with the resin mixture resulting transparency decreased. Therefore, transparent wood varnish matt, in general, better choose some compatible defoamer and leveling agent, such as a 071 Defoamer BYK, BYK 358, a leveling agent, De Qian 5400 defoamer, Germany Qian 6500 defoamers. 2.6 Solvent effects on the transparency of the transparent matt lacquer wood commonly used solvent is xylene, ketones and esters, the TDI / ISIP and other curing agent is not soluble in xylene, but soluble in oxygenated solvents ketones and esters Therefore, visual xylene as diluent. Wood matt varnish to maintain high transparency, other components of the same, just change the formula mixed solvents and thinners, and the results shown in Table l0. It can be seen from Table l0: When mixed solvents and thinners formula was reasonable, had no effect on the transparency, but will result in different gloss coating. In the same luster, the more some of oxalic acid with ethyl ether acetate, ethyl acetate solvent and so easy to extinction powder can reduce the amount of extinction, to improve transparency. After repeated experiments we used mixtures ��, the effect is good. Table l0 gloss and transparency of the solvent effect on the conclusion by 3 resin,[link widoczny dla zalogowanych], matting, wax, additives, curing agents, solvents and other aspects of well-chosen and experiments, we developed a high degree of transparency to overcome the normal wood and transparent matte varnish matt varnish coating wood when the white, wood pattern is not clear so the phenomenon of transparency is not good, completely black walnut,[link widoczny dla zalogowanych], etc. can be applied to the coating on the dark wood. After many practical applications furniture factory, was unanimously praised.
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