求英语高手帮忙:化工方面The results of the test programmer showed that: The TV-sets backplanes are made of polystyrene and high impact polystyrene, whereas ABS, PC/ABS and PVC are used for the PC-monitors tested. For meeting
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 08:42:04
求英语高手帮忙:化工方面The results of the test programmer showed that: The TV-sets backplanes are made of polystyrene and high impact polystyrene, whereas ABS, PC/ABS and PVC are used for the PC-monitors tested. For meeting
求英语高手帮忙:化工方面
The results of the test programmer showed that:
The TV-sets backplanes are made of polystyrene and high impact polystyrene, whereas ABS, PC/ABS and PVC are used for the PC-monitors tested.
For meeting highest fire safety performance, the flame-retardant systems used in TV-sets backplanes are all based on brominates flame retardants combined with an antimony oxide synergist. For PC-monitors, brominates and phosphorous-containing flame retardants are used, depending on the polymer.
The materials flammability tests carried out showed that sufficiently flame retarded plastics meet the high requirements of vertical tests (UL 94V). The low flame retardancy and non flame retarded plastics only meet the lower horizontal tests (UL 94 HB) requirements.
The tests with external ignition sources of growing intensity showed that flame retarded UL 94 V plastics generally do not burn, whereas HB-rated plastics readily ignite when exposed to the lowest energy ignition source typical of a short-circuit or to accidental contact with an open flame.
Older model European TV-sets and backplanes generally have higher fire safety levels than new TV-sets currently available in Germany.
New TV-sets and backplanes purchased in Germany can in most cases be ignited by the lowest energy ignition source.
TV-sets bought in Japan and the USA have high to very high fire safety levels.
New PC-monitor enclosures have high fire safety levels. They did not burn when exposed to the different ignition sources.
In two simulated real life fire tests in a fully furnished room, a new TV-set purchased in Germany, when ignited by the smallest ignition source, the methylamine tablet, led to flashover in the room after about 7 min. An USA TV-set did not ignite and did not burn when exposed to even the highest intensity ignition sources.
软件翻译的不管用,我试过,句子很不通,所以借用大家宝贵的时间帮帮忙吧,非常感谢!
求英语高手帮忙:化工方面The results of the test programmer showed that: The TV-sets backplanes are made of polystyrene and high impact polystyrene, whereas ABS, PC/ABS and PVC are used for the PC-monitors tested. For meeting
程序师测试的结果显示:
在彩电定制了聚苯乙烯和高抗冲聚苯乙烯,而ABS中,PC机 /ABS和聚氯乙烯用于电脑显示器测试.达到最高防火性能 阻燃系统应用于彩电定制都是基于brominates阻燃剂结合的三氧化二锑增效剂.对于电脑显示器,brominates和含磷阻燃剂使用,取决于聚合物.材料的可燃性进行的测试表明,充分阻燃塑料满足要求高的垂直测试 (ul作业).低阻燃性和非阻燃塑料只能满足较低水平考试(ul94hb)的要求.测试与外部点火源愈演愈烈显示阻燃ul94v塑料做的一般 而乙肝额定塑料随时鼓起暴露在低能量点火源典型的短路或偶发 接触明火.旧型的欧洲彩电和定制通常都具有较高的消防安全水平较新的彩电目前在德国.新彩电及购置定制德国在多数情况下可以点火器的最低点火能量来源.彩电买日本和美国已高到非常高的消防安全水平.新PC监视器外壳具有较高的消防安全水平.他们没有烧伤暴露在不同的点火源.在两个模拟真实火灾试验,在配备齐全的空间,一个新的电视集购买德国 当点燃的小火源,甲胺片 导致闪早餐后约7分钟.一个美国电视集不发火并未焚烧当暴露,甚至最高强度的点火源.