Adhesive testing at the Canadian Conservation Institute-an evaluation of selected poly(vinyl acetate) and acrylic adhesives
Adhesive testing at the Canadian Conservation Institute-an evaluation of selected poly(vinyl acetate) and acrylic adhesives
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加拿大保护研究所的粘合剂测试 - 对选定的聚（醋酸乙烯酯）和丙烯酸粘合剂的评估
DOI：
10.1179/sic.1996.41.1.19
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
R. S. Williams
中科院分区：
文献类型：
--
作者：
J. Down;Maureen A. MacDonald;Jean Tétreault;R. S. Williams
摘要 1983年，加拿大保护研究所（CCI）发起了一个项目，对27种聚醋酸乙烯酯（PVAC）和25种丙烯酸酯粘合剂进行了评估，包括pH值、有害挥发物的排放量、柔韧性/强度以及室温暗老化和荧光灯老化后的黄变情况。提取物 pH 值的测量表明，PVAC 粘合剂比丙烯酸粘合剂的酸性更强，并且光老化往往会降低这两类粘合剂的 pH 值。 PVAC均聚物通常比PVAC共聚物酸性更强，并且发现许多含有丙烯酸丁酯的丙烯酸粘合剂是中性的。对 PVAC 和丙烯酸粘合剂中挥发性化合物的分析表明，它们释放出各种酯和残留溶剂化合物，但只有 PVAC 粘合剂释放出大量的乙酸。结果表明，经过几周的初始固化期后，PVAC 粘合剂中乙酸的释放不会造成严重危害。一般来说，无论是P...
AbstractIn 1983 the Canadian Conservation Institute (CCI) initiated a project to evaluate 27 poly(vinyl acetate) (PVAC) and 25 acrylic adhesives on the basis of pH, emission of harmful volatiles, flexibility/strength and yellowing upon dark aging at room temperature and fluorescent light aging. Measurement of the pH of extracts showed that the PVAC adhesives were more acidic than the acrylic adhesives and that light aging tended to decrease the pH of both classes. The PVAC homopolymers generally were more acidic than the PVAC copolymers and many acrylic adhesives containing butyl acrylate were found to be neutral. The analysis of volatile compounds from the PVAC and acrylic adhesives showed that they emitted various ester and residual solvent compounds but only the PVAC adhesives released appreciable quantities of acetic acid. The results indicated that, after an initial curing period of several weeks, the evolution of acetic acid from the PVAC adhesives should not pose an acute hazard. In general, both P...