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生物质化学工程

生物质化学工程 ›› 2014, Vol. 48 ›› Issue (4): 18-22.doi: 10.3969/j.issn.1673-5854.2014.04.004

• 研究报告 • 上一篇    下一篇

天然生漆的水基化改性及其性能研究

孙祥玲1, 吴国民1,2, 孔振武1,2   

  1. 1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业局 林产化学工程重点开放性实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042;
    2. 中国林业科学研究院 林业新技术研究所, 北京 100091
  • 收稿日期:2013-11-19 出版日期:2014-07-30 发布日期:2014-07-29
  • 通讯作者: 孔振武，男，研究员，博士，博士生导师，主要从事天然资源化学利用及聚合物高分子材料研究；E-mail：kongzw@hotmail.com。 E-mail:kongzw@hotmail.com
  • 作者简介:孙祥玲（1987-），女，山东潍坊人，硕士研究生，研究方向：天然资源化学利用
  • 基金资助:
    国家国际科技合作专项项目（2011DFA32440）

Preparation and Properties of Waterborne Raw Lacquer

SUN Xiang-ling1, WU Guo-min1,2, KONG Zhen-wu1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 10091, China
  • Received:2013-11-19 Online:2014-07-30 Published:2014-07-29

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摘要： 采用复合乳化剂将天然生漆（RL）乳化成水包油型的稳定水基化生漆乳液（WRL），研究了乳化剂的种类、乳化剂的用量及不同乳化剂的配比对相反转过程及乳液稳定性的影响，并通过透射电子显微镜（TEM）与热重分析（TG）表征了水基化生漆乳液的粒径、粒子形貌及漆膜的耐热性能。研究结果表明，复合乳化剂聚氧乙烯辛基苯基醚（OP-10）/十二烷基硫酸钠（SDS）/聚乙烯醇（PVA）的乳化效果最好，最佳质量配比为7：3：10，乳化剂用量为生漆质量的10% 时能够形成稳定的乳液，粒径较小（<800 nm）且分布均匀；水基化生漆漆膜保持了天然生漆漆膜优良的机械性能、耐污染、耐化学介质及耐热性能，其铅笔硬度为4H，附着力为2级，柔韧性为0.5 mm，正冲的抗冲击强度由35 cm提高到50 cm，反冲的冲击强度由25 cm提高到50 cm，且成膜时间由4~5 d缩短到3 d。

关键词: 生漆, 乳化, 水基分散体系, 性能

Abstract: Waterborne dispersion of raw lacquer(WRL) was prepared by composite emulsifier. The effects of types and the content of emulsifier, as well as the ratio of different emulsifiers on the stability of emulsion and phase inversion were investigated. The particle size, morphology and mechanical properties of the WRL film were examined by TEM and TG. It was shown that the emulsification could be improved by using composite emulsifier of OP-10/SDS/PVA and the optimum mass proportion was 7:3:10. The dispersion had a good stability, and its particle size was not more than 800 nm when the dosage of composite emulsifier reached 10% of raw lacquer by weight. The film of WRL had excellent mechanical properties, thermal-stability and resistance to chemicals and pollution. It was similar to raw lacquer. Pencil hardness, adhesion and flexibility were 4H, 2 grade and 0.5 mm, respectively. The square impact strength of the films was increased from 35 cm to 50 cm and the reverse impact strength was increased from 25 cm to 50 cm. The formation time was shortened form 4-5 to 3 days.

Key words: raw lacquer, emulsification, waterborne dispersion, property

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