丙烯酸酯/石蜡共混乳液处理材疏水性研究
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摘要
针对石蜡和丙烯酸(酯)在木材防水改良应用方面的优势和不足,提出了利用丙烯酸酯乳液共混改性石蜡乳液。探究丙烯酸酯乳液对复合乳液成膜性及其对复合乳液处理材疏水性能的影响。考察了复合乳液粒径、离心稳定性、成膜性以及处理材吸水率、表面润湿性和尺寸稳定性等。研究结果表明:1)复合乳液可被用于木材浸渍改性处理,复合乳液平均粒径约180.0 nm。2)相比于石蜡乳液处理,复合乳液中丙烯酸酯乳液可协助石蜡在处理材内部形成有效疏水膜层,提高木材疏水性和尺寸稳定性。
Based on the advantages and disadvantages of paraffin and acrylate emulsion used in wood modification of water resistant, acrylate emulsion was used to modify paraffin emulsion via the blending method. The effect of acrylate emulsion on film-forming of the blending emulsion and hydrophobicity of its treated wood were discussed. The properties, namely, particle size, centrifugal stability and film formation of blending emulsion as well as water absorption, surface wettability, and dimensional stability of treated wood were investigated. The results showed that(1) The blending emulsion could be used in wood treatment with the particle size of 180.0 nm.(2)Compared with the wood treated by paraffin emulsion, wood treated by the blending emulsion showed significant improvement on hydrophobicity and dimensional stability due to the formation of hydrophobic film in wood with the presence of acrylate.
Based on the advantages and disadvantages of paraffin and acrylate emulsion used in wood modification of water resistant, acrylate emulsion was used to modify paraffin emulsion via the blending method. The effect of acrylate emulsion on film-forming of the blending emulsion and hydrophobicity of its treated wood were discussed. The properties, namely, particle size, centrifugal stability and film formation of blending emulsion as well as water absorption, surface wettability, and dimensional stability of treated wood were investigated. The results showed that(1) The blending emulsion could be used in wood treatment with the particle size of 180.0 nm.(2)Compared with the wood treated by paraffin emulsion, wood treated by the blending emulsion showed significant improvement on hydrophobicity and dimensional stability due to the formation of hydrophobic film in wood with the presence of acrylate.
引文
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[2]Hill C A S.Wood modification:An update[J].Bio Resources,2011,6(2):918-919.
[3]Jiang J,Cao J,Wang W.Characteristics of wood-silica composites influenced by the p H value of silica sols[J].Holzforschung,2018,72(4):311-319.
[4]Humar M,Kr?i?nik D,Lesar B,et al.Thermal modification of waximpregnated wood to enhance its physical,mechanical,and biological properties[J].Holzforschung,2017,71(1):57-64.
[5]Esteves B,Nunes L,Domingos I,et al.Improvement of termite resistance,dimensional stability and mechanical properties of pine wood by paraffin impregnation[J].European Journal of Wood and Wood Products,2014,72(5):609-615.
[6]Scholz G,Van den Bulcke J,Boone M,et al.Investigation on waximpregnated wood.Part 1:Microscopic observations and 2D X-ray imaging of distinct wax types[J].Holzforschung,2010,64(5):581-585.
[7]吴跃焕,赵建青,暴志菊.丙烯酸酯酯乳液的成膜性能[J].绿色建筑,2008,24(3):17-21.
[8]肖龙,鄢冬茂,胥维昌.丙烯酸酯酯乳液聚合稳定性的研究[J].中国涂料,2017,32(7):19-23.
[9]黄艳辉,赵畅,冯启明,等.丙烯酸水性漆的涂饰工艺及其对漆膜性能的影响[J].林产工业,2018,45(1):24-26,34.
[10]涂渝娇.固体石蜡/丙烯酸酯改性乳液制备研究[D].昆明:昆明理工大学,2007.
[11]辜婷,王君,金旭,等.丙烯酸酯酯/石蜡复合乳液的制备及其稳定性研究[J].涂料工业,2016,46(7):55-60.
[12]辛华,周睿.石蜡/丙烯酸酯酯复配乳液纸张防水剂的研究[J].陕西科技大学学报,2008,26(3):60-63.
[13]Jiang J,Cao J,Wang W,et al.Preparation of a synergistically stabilized oil-in-water paraffin Pickering emulsion for potential application in wood treatment[J].Holzforschung,2018,72(6):489-497.