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首页> 外文期刊>Journal of Applied Polymer Science >REACTIVE DILUENTS AND PROPERTIES OF ULTRAVIOLET-CURED POLYCARBONATE URETHANE ACRYLATES
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REACTIVE DILUENTS AND PROPERTIES OF ULTRAVIOLET-CURED POLYCARBONATE URETHANE ACRYLATES

机译：紫外光固化的聚碳酸氨基甲酸酯丙烯酸酯的反应性稀释剂和性能

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摘要

Polymer films obtained from photocurable formulations were investigated by tensile methods and dynamic mechanical analysis. The polymer formulations contained photoinitiator, urethane diacrylate oligomer, and acrylic reactive diluent. It was found that diluent concentration may strongly affect the glass transition temperature and elastic modulus of the cured coating. When the diluent homopolymer glass transition temperature is larger than that of oligomer homopolymer, the glass transition temperature and elastic modulus of the coating film increase with the increase of the diluent concentration. When the diluent homopolymer has lower glass transition temperature than the homopolymer of the oligomer, the increase in diluent concentration leads to a decrease in glass transition temperature and elastic modulus of the UV-cured coating film. The effect of the testing temperature on tensile storage modulus of the films containing different concentrations of reactive diluents was studied as well. The data indicated that a variety of coatings with wide ranging but predictable properties can be formulated from previously examined starting materials but used at different concentrations. (C) 1995 John Wiley & Sons, Inc. [References: 20]
机译：通过拉伸方法和动态力学分析研究了从可光固化配方中获得的聚合物薄膜。聚合物制剂包含光引发剂，氨基甲酸酯二丙烯酸酯低聚物和丙烯酸反应性稀释剂。发现稀释剂浓度可能强烈影响固化涂层的玻璃化转变温度和弹性模量。当稀释剂均聚物的玻璃化转变温度大于低聚物均聚物的转变温度时，涂膜的玻璃化转变温度和弹性模量随着稀释剂浓度的增加而增加。当稀释剂均聚物的玻璃化转变温度低于低聚物的均聚物时，稀释剂浓度的增加导致紫外线固化涂膜的玻璃化转变温度和弹性模量降低。还研究了测试温度对含有不同浓度的反应性稀释剂的薄膜的拉伸储能模量的影响。数据表明，可以从先前检查过的起始原料中配制出具有广泛范围但可预测性能的各种涂料，但使用的浓度不同。 （C）1995 John Wiley＆Sons，Inc. [参考：20]

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