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首页> 外文期刊>Journal of Polymers and the Environment >Photocrosslinking of an Acrylated Epoxidized Linseed Oil: Kinetics and its Application for Optimized Wood Coatings
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Photocrosslinking of an Acrylated Epoxidized Linseed Oil: Kinetics and its Application for Optimized Wood Coatings

机译：丙烯酸环氧化亚麻籽油的光交联：动力学及其在优化木器涂料中的应用

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摘要

Over the past few decades, the industry developed an increasing interest in using renewable, bio-based thermosetting polymers as matrix systems for composites and coating systems. In the present paper an acrylated epoxidized linseed oil (AELO) was synthesized from epoxidized linseed oil (ELO) through ring opening of the oxirane group using acrylic acid as the ring opening agent. The synthesized AELO was mixed with three different photoinitiators and cured under monochromatic conditions (λ = 365 nm) at different light intensities and at different temperatures. The concentration of the initiators was aligned that all initiators absorb at 365 nm the same amount of light. The evolution of cure was monitored by using real-time infrared spectroscopy with a heated attenuated total reflection unit. The decrease of absorption in the measured spectra at 1,406 cm~(-1) was used to calculate the conversion of acrylic double bonds with increasing time of UV light exposure to get information about the cure kinetics for each AELO mixture at different light intensities and different temperatures. Wood substrates were coated in a preliminary work with the AELO mixtures and after UV-curing some technological coating properties like gloss, scratch resistance, adhesion, and solvent resistance were tested. In combination with the information about the cure kinetics in the present work the coating properties were correlated with the cure evolution and the final degree of double bond conversion. The found correlation can be used in the future to find optimized coating conditions for the AELO mixtures on wood substrates.
机译：在过去的几十年中，该行业对使用可再生的生物基热固性聚合物作为复合材料和涂料体系的基质体系的兴趣日益浓厚。在本文中，使用丙烯酸作为开环剂，通过环氧乙烷基团的开环，由环氧化亚麻籽油（ELO）合成丙烯酸酯化的环氧化亚麻籽油（AELO）。将合成的AELO与三种不同的光引发剂混合，并在单色条件下（λ= 365 nm）在不同的光强度和温度下进行固化。调整引发剂的浓度，使所有引发剂在365 nm处吸收相同量的光。通过使用带有加热的衰减全反射单元的实时红外光谱来监控固化过程。利用在1,406 cm〜（-1）处测得的光谱的吸收减少来计算丙烯酸双键随紫外线曝光时间的增加而转换，以获得有关每种AELO混合物在不同光强和不同光强下固化动力学的信息。温度。在初步工作中，用AELO混合物对木材基材进行了涂层，并在UV固化后测试了一些技术涂层性能，例如光泽，耐刮擦性，附着力和耐溶剂性。结合当前工作中有关固化动力学的信息，涂料性能与固化进展和最终双键转化程度相关。所发现的相关性可以在将来用于为木质基材上的AELO混合物找到最佳的涂层条件。

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  • 来源
    《Journal of Polymers and the Environment》 |2012年第4期|1063-1074|共12页
  • 作者

    Guenter Wuzella; Arunjunai Raj Mahendran; Uwe Mueller; Andreas Kandelbauer; Alfred Teischinger;

  • 作者单位

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurter Strasse 87-89, 9300 Sankt Veit an der Glan, Austria;

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurter Strasse 87-89, 9300 Sankt Veit an der Glan, Austria;

    Wood Carinthian Competence Center (W3C), Kompetenzzentrum Holz GmbH, Klagenfurter Strasse 87-89, 9300 Sankt Veit an der Glan, Austria;

    School of Applied Chemistry, Reutlingen University, Alteburgstrasse 150, 72762 Reutlingen, Germany;

    Department of Wood Science and Technology, University of Natural Resources and Life Sciences, Peter Jordan Strasse 82, 1190 Vienna, Austria;

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  • 正文语种 eng
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  • 关键词

    acrylated epoxidized linseed oil; UV curing; real-time FTIR; cure kinetics; wood coating;

    机译：丙烯酸酯化环氧化亚麻籽油;UV固化;实时FTIR;固化动力学;木器涂料;

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