The residual levels and migration behavior of volatile substances were detected using HS-GC/MS for acrylonitrile-butadiene-styrene copolymer (ABS) toys, thermoplastic elastomer toys, and rubber toys made from 1,3-buta...The residual levels and migration behavior of volatile substances were detected using HS-GC/MS for acrylonitrile-butadiene-styrene copolymer (ABS) toys, thermoplastic elastomer toys, and rubber toys made from 1,3-butadiene and styrene found on the Japanese market. The maximum residual level of these volatile substances was 2600 μg/g of styrene in ABS toys. In particular, the levels of known carcinogens 1,3-butadiene, benzene, and acrylonitrile are 5.3, 2.5 and 55 μg/g, which are much lower than the EU limit of 0.1%. Furthermore, some volatile substances migrated from ABS toys into water in amounts of 3 -40 ng/mL. Thermoplastic elastomer toys and rubber toys contained these volatile substances at significantly lower levels than ABS toys.展开更多
综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的...综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的热氧化等。今后的研究重点之一是应取得更多证据支持已提出的机理,使其日趋完善。展开更多
文摘The residual levels and migration behavior of volatile substances were detected using HS-GC/MS for acrylonitrile-butadiene-styrene copolymer (ABS) toys, thermoplastic elastomer toys, and rubber toys made from 1,3-butadiene and styrene found on the Japanese market. The maximum residual level of these volatile substances was 2600 μg/g of styrene in ABS toys. In particular, the levels of known carcinogens 1,3-butadiene, benzene, and acrylonitrile are 5.3, 2.5 and 55 μg/g, which are much lower than the EU limit of 0.1%. Furthermore, some volatile substances migrated from ABS toys into water in amounts of 3 -40 ng/mL. Thermoplastic elastomer toys and rubber toys contained these volatile substances at significantly lower levels than ABS toys.
文摘综述和讨论了芳香族磷酸酯阻燃聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物、硅化合物和硫化合物阻燃 PC 的阻燃机理以及 PC 的热分解机理。涉及的反应有碳酸酯基的重排、羟基化合物与 PC 的作用、Fries 重排、异亚丙基键的断裂及 PC 的热氧化等。今后的研究重点之一是应取得更多证据支持已提出的机理,使其日趋完善。