{"title":"一种快速评估聚氨酯耐生物变质性的方法","authors":"R. Dale, D.J. Squirrell","doi":"10.1016/0265-3036(90)90001-N","DOIUrl":null,"url":null,"abstract":"<div><p>A rapid soil burial method for assessing the susceptibility of polyurethanes to biodeterioration was developed. The time of the test was reduced by prestressing the polyurethanes. The degree of deterioration was measured by following changes in the appearance of the polyurethanes and in selected physical properties. It was found that pre-stressing produced significant reductions in the tensile strength of a known susceptible polyurethane after burial in soil for 2 weeks. The reduction was greater than that found with unstressed polyurethanes buried for 26 weeks in active soil. Changes in tensile strength were less after burial for 4 weeks in sterile soil than after burial in active soil for the same period. The results suggest that deterioration of polyurethane during soil burial is a result of both chemical and microbial action.</p></div>","PeriodicalId":13629,"journal":{"name":"International Biodeterioration","volume":"26 6","pages":"Pages 355-367"},"PeriodicalIF":0.0000,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0265-3036(90)90001-N","citationCount":"16","resultStr":"{\"title\":\"A rapid method for assessing the resistance of polyurethanes to biodeterioration\",\"authors\":\"R. Dale, D.J. Squirrell\",\"doi\":\"10.1016/0265-3036(90)90001-N\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A rapid soil burial method for assessing the susceptibility of polyurethanes to biodeterioration was developed. The time of the test was reduced by prestressing the polyurethanes. The degree of deterioration was measured by following changes in the appearance of the polyurethanes and in selected physical properties. It was found that pre-stressing produced significant reductions in the tensile strength of a known susceptible polyurethane after burial in soil for 2 weeks. The reduction was greater than that found with unstressed polyurethanes buried for 26 weeks in active soil. Changes in tensile strength were less after burial for 4 weeks in sterile soil than after burial in active soil for the same period. The results suggest that deterioration of polyurethane during soil burial is a result of both chemical and microbial action.</p></div>\",\"PeriodicalId\":13629,\"journal\":{\"name\":\"International Biodeterioration\",\"volume\":\"26 6\",\"pages\":\"Pages 355-367\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0265-3036(90)90001-N\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Biodeterioration\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/026530369090001N\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Biodeterioration","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/026530369090001N","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A rapid method for assessing the resistance of polyurethanes to biodeterioration
A rapid soil burial method for assessing the susceptibility of polyurethanes to biodeterioration was developed. The time of the test was reduced by prestressing the polyurethanes. The degree of deterioration was measured by following changes in the appearance of the polyurethanes and in selected physical properties. It was found that pre-stressing produced significant reductions in the tensile strength of a known susceptible polyurethane after burial in soil for 2 weeks. The reduction was greater than that found with unstressed polyurethanes buried for 26 weeks in active soil. Changes in tensile strength were less after burial for 4 weeks in sterile soil than after burial in active soil for the same period. The results suggest that deterioration of polyurethane during soil burial is a result of both chemical and microbial action.
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