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    • 7. 发明授权
    • Fluorescent compounds for detecting use of proper plastic molding temperatures
    • 用于检测使用适当塑性成型温度的荧光化合物
    • US08821772B2
    • 2014-09-02
    • US13526950
    • 2012-06-19
    • Joseph Kuczynski, Jr.Melissa K. MillerHeidi D. WilliamsJing Zhang
    • Joseph Kuczynski, Jr.Melissa K. MillerHeidi D. WilliamsJing Zhang
    • B29C45/76C09K11/00
    • B29C45/78B29C45/0001B29K2995/0018B29K2995/0035
    • A method comprising injection molding a plastic part from a polymer formulation comprising an injection moldable thermoplastic and a fluorescent compound, wherein the fluorescent compound has a decomposition temperature that establishes a maximum processing temperature for the polymer formulation. The fluorescent compound will thermally decompose to generate gaseous products causing visible bubble formation in the surface of the plastic part in response to exposure to a processing temperature that exceeds the decomposition temperature of the fluorescent compound. If the plastic part was processed without exposure to a processing temperature that exceeds the decomposition temperature of the fluorescent compound, then any fluorescent compound within the plastic part will cause the plastic part to fluoresce in response to exposure to black light. A suitable fluorescent compound may be, for example, selected from oxalates, carbamic acids, carbonic acids, diazocarbonyl compounds, and combinations thereof. A preferred fluorescent compound is bis(2,4,6-trichlorophenyl)oxalate.
    • 一种包括从包含注射成型热塑性塑料和荧光化合物的聚合物制剂注塑塑料部件的方法,其中所述荧光化合物具有建立聚合物制剂的最大加工温度的分解温度。 响应于暴露于超过荧光化合物的分解温度的处理温度,荧光化合物将热分解以产生气态产物,导致塑料部件表面中的可见气泡形成。 如果在不暴露于超过荧光化合物的分解温度的处理温度的情况下处理塑料部件,则塑料部件内的任何荧光化合物将导致塑料部件响应于暴露于黑光而发荧光。 合适的荧光化合物可以是例如草酸盐,氨基甲酸,碳酸,重氮羰基化合物及其组合。 优选的荧光化合物是草酸二(2,4,6-三氯苯基)酯。
    • 9. 发明申请
    • CONDUCTIVE DUST DECTECTION
    • 导电除尘
    • US20130180271A1
    • 2013-07-18
    • US13351693
    • 2012-01-17
    • Joseph KUCZYNSKIMelissa K. MILLERPrabjit SINGHHeidi D. WILLIAMSJing ZHANG
    • Joseph KUCZYNSKIMelissa K. MILLERPrabjit SINGHHeidi D. WILLIAMSJing ZHANG
    • G05D22/02F24F3/14G01R31/02
    • H05K7/20736G01N15/0656G01N2015/0046H05K7/20181
    • An apparatus is provided, which includes a dust detector, a voltage source, and a controller. The dust detector includes two opposing surfaces and a conductive dust sensor. The two opposing surfaces are disposed in spaced, opposing relation to allow for the passage of airflow between the surfaces, and the conductive dust sensor is disposed at a surface of the two opposing surfaces. The voltage source is configured and controlled to establish an electrostatic field at least partially between the two opposing surfaces to facilitate directing conductive particles in the airflow passing between the two opposing surfaces towards the dust sensor. The controller monitors for a leakage current within the conductive dust sensor and determines whether the leakage current exceeds a predetermined trigger level indicative of the presence of conductive dust, and if so, automatically indicates a conductive dust warning.
    • 提供了一种装置,其包括灰尘检测器,电压源和控制器。 尘埃检测器包括两个相对的表面和一个导电粉尘传感器。 两个相对的表面以间隔开的相对关系设置成允许气流在表面之间通过,并且导电粉尘传感器设置在两个相对表面的表面。 电压源被配置和控制以在至少部分地在两个相对的表面之间建立静电场,以有助于将通过两个相对表面之间的空气中的导电颗粒导向尘埃传感器。 控制器监控导电粉尘传感器内的漏电流,并确定泄漏电流是否超过表示存在导电粉尘的预定触发电平,如果是,则自动指示导电粉尘警告。