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Abstract The microbes that are able to deteriorate raw rubber and vulcanizates, have been isolated, screened and identified. Among them there are 5 bacterial species(Bacillus lichenformis, Achromobacter liquefaciens, Alcaligenes afaecalis etc), 7 fungi (Aspergillus flavus, Penicillium chrosogenum etc), and9 species of actinomyces. Mixed strains are more resistant toward microbicides than single strain and rubbers are more sensitive to microbial attack of mixed strains than to that of a single strain. The bateria are most resistant to microbicides, with fungi being less and actinomyces the least resistant. The tendency of anti-microbial attack of rubber increases in order of natural rubber, Buna S, butylrubber, neoprene, Buna N, thiokol in raw rubber; and Buna S, neoprene, Buna N in vulcanized rubber. According to microbicidal toxicity, the durability, the reaction with compounding ingredient, the effect of biocides on physical mechanical properties, ageing of rubber, cheap and low toxic, the microbicide Zn-pentachlorophenate(PR2)is selected from more than 40 microbicides. We suggest that PR2 is applied as microbicide for protection from microbial attack of rubber used in waterproof materials underground. The Buna N incorporated with a concentration 2-5％ of PR2 possesses not only excellent anti-microbial potency, but also desirable physical mechanical properties.
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Received: 25 February 1982
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Cite this article:
Luo Renhao Lin Yingrui Wu Zhixiang Zhao Yufeng Miao Guishi and Chen Yuancai (Institute of Microbiology; Chinese Academy of Sciences). STUDIES ON ANTI-MICROBIAL DETERIORATION OF RUBBER FOR WATERPROOF MATERIALS. J Chin Soc Corr Pro, 1982, 2(1): 41-51.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1982/V2/I1/41
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橡胶工业,橡胶物理试验方法标准汇编,技术标准出版社,1970．
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