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丙烯酸水性漆的涂饰工艺及其对漆膜性能的影响 总被引：2，自引：0，他引：2
以樟子松为基材,采用丙烯酸水性底漆和面漆对其进行涂饰,研究了木材粗糙度及底、面漆的涂布量对漆膜的附着力、硬度、耐热以及耐水性能的影响。研究认为,木材的表面粗糙度对漆膜附着力有较大的影响,而底面漆的涂布量对漆膜的附着力、漆膜硬度、耐热性及耐水性影响较小。综合各方面因素,得出了最佳涂饰工艺:底漆与底漆、面漆与底漆、面漆与面漆之间均用600目的砂纸进行打磨,采用两底两面的涂饰方法。此时,木材的表面粗糙度Ra为2.19μm,最终漆膜硬度为HB,附着力、耐热、耐水性均高达1级。 相似文献
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为阐明高密度重组竹的表面涂饰性能,分析了不同密度重组竹的表面形貌、粗糙度、润湿性和漆膜附着力,考察了密度对漆膜附着力的影响。结果表明：重组竹的密度越高,其表面越光滑,粗糙度越小,Ra最低仅为1.71μm。同时,随着重组竹密度的增大,蒸馏水、甲酰胺和二碘甲烷三种极性不同的液体的接触角变大,表面自由能也随之降低。受表面粗糙度和润湿性的影响,低密度的重组竹与高密度的相比,具有更高的漆膜附着性能。然而,根据GB/T4893.4—2013对漆膜附着力的分级,所有重组竹对水性和油性木器底漆的表面漆膜附着力均为2级,表明密度对重组竹表面的漆膜附着力无显著影响。研究结果可为高密度重组竹的表面涂饰处理提供理论支持。 相似文献
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以4种水性聚氨酯漆料为研究对象,系统研究了漆料和基材类型、涂饰工艺对水性漆表干、实干时间和漆膜硬度、附着力及耐磨性的影响规律。结果表明:漆料的表实干时间及漆膜性能很大程度受成膜树脂本身性能影响;基材影响漆料表实干时间、漆膜硬度和附着力,对漆膜耐磨性影响不大,漆料涂饰在樱桃木和水曲柳上的干燥速率最快,在樱桃木、沙比利和水曲柳上的硬度最佳,达2 H,在樱桃木、沙比利和红橡上的附着力最佳,达0级;涂饰工艺对漆料的表干、实干时间以及漆膜硬度、附着力、耐磨性的影响都不明显,3种工艺涂饰后漆膜硬度和附着力分别为2 H和0级,漆膜耐磨性差别不大。 相似文献
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围绕甲醛捕捉剂对漆膜的附着力、光泽度、耐磨性、硬度的影响展开研究,采用经过甲醛捕捉剂处理后的胶合板和没有经过处理的胶合板,涂饰相同量的油漆,进行对比实验。结果表明:甲醛捕捉剂对硝基漆、醇酸清漆漆膜附着力没有影响;对水性聚氨酯漆的漆膜附着力有一定的影响,使漆膜附着力等级降低到1～2级之间。甲醛捕捉剂对漆膜光泽度、硬度、耐磨性没有影响。该方法成本低廉,甲醛降解效率在95%以上,过程可控,操作简单方便,能有效地提高人造板的质量。 相似文献
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在相同环境条件下,对相同规格的稻草板表面砂光后,分别进行直接涂饰和贴面后涂饰聚氨酯(PU漆)两种工艺试验,测定漆膜附着力、表面光泽度、漆膜硬度等.结果表明:稻草刨花板表面直接涂饰PU漆,或者贴薄木、浸渍纸后再涂饰PU漆的工艺均可行,三底两面工艺为宜,涂饰PU白色漆的漆膜性能最佳. 相似文献
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以樟子松和欧洲赤松为基材,探究不同涂饰工艺和底漆漆水配比对水性漆漆膜性能的影响。结果表明：基材与水性漆结合良好,漆膜厚度范围为65.91～75.98μm,硬度等级最高为H,最低为B,附着力为0级,光泽度有明显提升。影响漆膜性能因素的顺序为：涂饰工艺>基材>底漆漆水配比,在厚度、硬度、光泽度、耐冲击度及抗回粘性上表现得更为明显。涂饰水性漆后明度显著下降,红绿和黄蓝色指数无明显变化,基材对漆膜色度值的影响更大,400 r之前各因素对漆膜的耐磨性影响较小,400r时工艺Ⅱ漆膜质量损失更严重,经水性漆涂饰后木制品表面平衡接触角增加,润湿性降低。研究结论为水性漆在松木制品、家具以及装饰等领域的更好应用提供了依据。 相似文献
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刨花板是家具制造业的首选板材,在潮湿的环境中使用易出现翘曲变形、膨胀及分层等现象。为改善刨花板防潮性能,提高其尺寸稳定性,将甲基三甲氧基硅烷(MTMS)与0.1mol/L的盐酸以4∶1的体积比混合,将混合溶液置于冰浴中超声水解360 min,然后利用MTMS水解溶液对刨花板进行5 min的浸渍处理。分析了改性前后刨花板的润湿性、抗紫外老化性、粗糙度、表面化学结构及物理力学性能。研究结果表明:经MTMS水解溶液浸渍改性的刨花板具有稳定的拒水、拒油及抗老化性能,尺寸稳定性得到改善,板坯的表面密度增加,力学性能提高。 相似文献
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《Wood material science & engineering》2013,8(2):95-110
Abstract Wood moisture content of coated panels of Scots pine sapwood was recorded during 24 months natural weathering in Vienna by logging electric resistance and temperature near the surface. Eight coating systems with various film thicknesses were used, including three solvent borne alkyd stains, three water borne acrylic stains and two water borne acrylic paints. At five sites in Europe wood moisture content of panels coated with three solvent borne alkyd stains, a brown acrylic stain and a white opaque acrylic paint was recorded weekly by changes in panel mass. Fluctuations in wood moisture content were influenced by the film thickness, water permeability and colour of the coating systems used. Degradation phenomena led to decreasing moisture protection of less durable coating systems over time of exposure. The exposure site clearly affected wood moisture content in the panels. 相似文献
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Iis Yuningsih Istie Sekartining Rahayu Dumasari Lumongga 《Wood material science & engineering》2020,15(4):229-236
ABSTRACT The quality of finished wood products depends on the quality of its coating layer. An important indicator for evaluating the quality is Adherence of the paint on the wood surface. The purpose of this research was to analyze the effect of wood surface roughness and the viscosity of acrylic paints (pure acrylic and acrylic copolymer) to the wettability and Adherence for long and short rotation teaks. Wood surface with various degrees of roughness was prepared by sanding with abrasive papers of P120, P240, and P360 grits. Different viscosity of the acrylic paints was prepared composition between paint and water (w/w) of 100:0, 90:10, 80:20, and 70:30. The wettability of the acrylic paints on teak wood surfaces was measured using a sessile drop contact angle method with the S/G model. Adherence of the coating layer was measured using a crosscut test. The results showed that the increase in the roughness (Ra) and the decrease in the viscosity of the paints resulted in the increase in the wettability which leads to better Adherence of acrylic paints on the surface of teak woods. The pure acrylic paint generated better wettability and Adherence compared to the acrylic copolymer. 相似文献
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通过原位聚合法的二步法制备脲醛@环氧树脂微胶囊,囊壁以尿素和甲醛为原料,囊芯用环氧树脂制备,将其添加进木器水性涂料中形成木器涂膜,探究微胶囊对水性涂膜的性能影响及其自修复效果。通过扫描电子显微镜和红外光谱测试仪对制备的不同芯壁比的微胶囊形貌特征和组成成分进行了观测,并将微胶囊分别以不同浓度添加量加入水性涂层,对涂层的光泽度、硬度、附着力、抗冲击力性能进行了评价。结果表明:在水性涂层中,微胶囊质量分数为10%,芯壁材质量比为0.83∶1时,水性涂层综合性能较好,对涂层各性能的负面影响较少。划痕实验表明,微胶囊质量分数为10%时涂层具有良好的修复能力。通过水性自修复涂层的制备和性能表征,探讨了微胶囊自修复技术应用于水性涂料的可能性,为后续涂料的工程应用研究奠定了基础。 相似文献
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Mustafa Kemal Yalinkiliç Rifat Ilhan Yuji Imamura Munezoh Takahashi Zafer Demirci Ahmet Cihangir Yalmkiliç Huseyin Peker 《Journal of Wood Science》1999,45(6):502-514
Outdoor performances of a polyurethane varnish and an alkyd-based synthetic varnish coated over chromium-copper-boron (CCB)-impregnated Scots pine (Pinus sylvestris L.) and chestnut (Castanea sativa Mill.) [10 (R) × 100 (T) × 150 (L) mm] were investigated. These varnishes were also applied to the wood surface as sole coatings or impregnated into wood as water-repellent (WR) solutions. Outdoor exposure was performed in the Black Sea region of northern Turkey (41°N, 39.43°E) where humid weather predominates throughout the year and accelerates decomposition of coated wood surfaces. The wood panels were exposed at 45° south on their tangential surfaces. After 9 months of exposure to summer, autumn, and the following winter season, the color and glossiness changes of the exposed surface, adhesion of the coating layer to the wood surface, water absorption through the coating layers, mass loss, and the hardness of the board surface were studied. CCB impregnation greatly stabilized the surface color of varnish-coated panels of both wood species. Gradual decreases of adhesion between varnished layers and preimpregnated surfaces were attributed to probable weakening of interactions at the interface of the treated wood and the film layer. A superficial cleaning process of treated wood is suggested to improve glossiness and adhesion. The coated wood surface became harder with time on outdoor exposure until a maximum hardness occurred followed by softening, whereas the uncoated surface softened steadily. Polyurethane varnish yielded a harder surface than synthetic varnish. Mass losses of wood panels after 9 months of exposure were negligible for all treatments compared with the untreated controls, which were totally discolored and eroded on the surface. It is concluded that long-term exterior wood protection has been achieved by a successful combination of an appropriate preservative treatment followed by a compatible surface-coating process. 相似文献
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Bruna Ugulino 《Wood material science & engineering》2018,13(2):64-72
Sanding is the most common machining process used to prepare wood surfaces prior to coating. Hence, to improve surface quality and coating performance during this process, an optimal set of machining parameters should be established according to wood species and its final use. The effects of grit size and feed speed on surface properties and coating performance of red oak wood were studied. Surface quality was assessed by surface roughness, scanning electron micrographs, and wetting analyses. Coating performance was evaluated using pull-off adhesion tests on coated surfaces before and after an accelerated weathering. The results showed that smoother surfaces are obtained as the grit size number of the abrasive increased. On the other hand, minor differences were observed on cell damages and surface roughness as feed speed changed. Also, there was little difference among treatments concerning wetting behavior and surface energy. Pull-off strength was more affected by changes in grit size than feed speed. A P100-grit size program with a feed speed of 7 m/min resulted in a suitable roughness which provided good adhesion and high pull-off strength after aging test. 相似文献
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观光木是广西大力发展的珍稀树种之一,具有优良的材性和机械加工性能.本文以观光木木材用的涂饰聚氨酯清漆和水性木器漆为研究对象,研究漆膜理化性能、光泽度和色度学特征的变化规律,为观光木木材高附加值实木制品的开发利用提供理论依据和信息.研究表明：①聚氨酯清漆的最佳涂饰工艺为：砂纸选用400#（表面粗糙度Ra为2.3）,底漆涂布量为50 g/m2,面漆涂布量为70 g/m2,涂饰次数为3底3面;②水性木器漆涂料的最佳涂饰工艺为：砂纸选用320#（表面粗糙度Ra为2.9）,底漆涂布量为100g/m2,面漆涂布量为120g/m2,涂饰次数为3底3面;③从漆膜理化性能、改善观光木表面光泽度和色度学特征以及节约原料看,聚氨酯清漆比水性木器漆有较明显的优势. 相似文献
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《中国林业科技(英文版)》2012,(Z1):29-38
Bamboo deterioration caused by light becomes a significant problem as application of bamboo extends from indoor to outdoor.The color and roughness of bamboo are two important exterior performances.This study focused on UV resistant nano composites coatings for exterior use and what aimed to find a formulation which could enhance the durability of bamboo.Four kinds of film-forming materials and four kinds of nano particles were used to improve bamboo exterior performance.The color and roughness of nano composites coatings were measured during accelerated weathering.Artificial aging time was 174 h at the temperature of 50 ℃.The experiment showed nanocomposites coatings had significant improvement in UV-shielding and nearly all the samples presented a darkening tendency in ΔL* and increasing tendency in Δa*,ΔE* and ΔRa.The orthogonal experiment obtained the least change in color and Ra which could be achieved with nano composites coating made by melamine resin and TiO2 when a* was considered as an important index.Film-forming material was the only factor which had significant influence on color and roughness when a* was not considered as important index,then melamine resin was the best choice. 相似文献
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为改善空气质量,降解大气中的NOX,采用纳米TiO2光催化材料对涂料进行改性,然后喷洒在沥青道路表面。制备分散性及稳定性良好的纳米TiO2浆料,采用高速剪切与超声波震荡相接合的方法,通过正交试验得到最佳配比。考虑到涂料喷涂在沥青表面上的特殊环境,改性涂料应具备抗滑、耐水、冻融循环及良好的附着力等性能。经过一系列测试,结果表明:3%含量的纳米TiO2具有良好的分散性,用其制备的改性涂料能和沥青很好的结合,结合后其抗滑性、耐水性、冻融循环和附着力等均优于其他含量的涂料,适用于作为沥青路面表面喷涂的负载涂料。 相似文献