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Novel nonammonia preservative for concentrated natural rubber latex

机译:用于浓缩天然橡胶胶乳的新型非氨防腐剂

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A derivative of sym-triazine (HTT) was chosen as a new nonammonia preservative for concentrated natural rubber latex (CNRL) in place of NH3-TT/zinc oxide (ZnO). The preservation effects of the HTT for CNRL, drying characteristics, mechanical properties, and cytotoxicity of the vulcanized natural rubber (NR) film were investigated. The results show that the CNRL was preserved steadily for more than 6 months with 0.3% HTT, and the volatile fatty acid number, viscosity, and mechanical stability of CNRL all met the requirements of ISO 2004:2010(E). The drying characteristics of the vulcanized NR film preserved by HTT retained no change compared with those of the film preserved by NH3-TT/ZnO. The tensile strength and elongation at break of the vulcanized NR film preserved by HTT were 32.17 MPa and 853.80%, respectively; these were very similar to those of the film preserved by NH3-TT/ZnO, whereas the tear strength reached 68.43 kN/m, and this was much higher than that by NH3-TT/ZnO. The results of the cytotoxicity and dermal irritation tests prove that HTT is not especially harmful to humans. (C) 2014 Wiley Periodicals, Inc.
机译:选择了间三嗪衍生物(HTT)作为新型的用于浓缩天然橡胶胶乳(CNRL)的非氨防腐剂,代替了NH3-TT /氧化锌(ZnO)。研究了HTT对CNRL的保存效果,干燥特性,机械性能和硫化天然橡胶(NR)膜的细胞毒性。结果表明,使用0.3%HTT可以将CNRL稳定保存6个月以上,并且CNRL的挥发性脂肪酸数量,粘度和机械稳定性均符合ISO 2004:2010(E)的要求。与NH3-TT / ZnO相比,HTT固化的NR硫化膜的干燥特性没有变化。 HTT固化的NR硫化膜的拉伸强度和断裂伸长率分别为32.17 MPa和853.80%。它们与由NH3-TT / ZnO保存的薄膜非常相似,而撕裂强度达到68.43 kN / m,远高于NH3-TT / ZnO的撕裂强度。细胞毒性和皮肤刺激性测试的结果证明,HTT对人体并不是特别有害。 (C)2014威利期刊公司

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