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用赛璐珞的丙酮溶液涂布竹材,其防水效力增加不多。如将松香加入上述溶液,能使竹材的吸水性显著地减小。用沥青液及熔化的石油沥青分别涂刷竹材,浸水七天后竹材的吸水量各为6.1％及3.8％,若用松香的酒精溶液涂布竹材,其防水效力不大,并且和松香的浓度不成正比的关系。先涂布松香或松香与赛璐珞的酒精与丙酮溶液,再涂布熔化的石油沥青,七天后的竹材吸水百分率减至1.9％或1.1％。要获得满意的效果,还要请求适当的涂刷方法。
The use of celluloid acetone solution to coat bamboo, its water-proof effect is not much increase. If rosin is added to the above solution, the water absorption of the bamboo material can be significantly reduced. The bamboo materials were brushed with bitumen solution and molten petroleum pitch respectively, and the water absorption of the bamboo after immersion for seven days was 6.1% and 3.8%, respectively. If rosin was used to coat bamboo, the waterproof effect was not significant, and the concentration of rosin did not become The relationship is proportional. The rosin or rosin and celluloid alcohol and acetone solutions were first applied, and the molten petroleum pitch was coated. After seven days, the percentage of water absorbed by the bamboo material was reduced to 1.9% or 1.1%. To obtain satisfactory results, also request an appropriate painting method.