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    Methods and appartaus for non-destructing evaluation of the mechanical properties of composite materials
    1.
    发明授权
    Methods and appartaus for non-destructing evaluation of the mechanical properties of composite materials 失效
    复合材料力学性能的非破坏性评估方法与方法

    公开(公告)号：US4838085A

    公开(公告)日：1989-06-13

    申请号：US843717

    申请日：1986-03-25

    申请人： Roy F. Pellerin ,  Robert J. Ross

    发明人： Roy F. Pellerin ,  Robert J. Ross

    IPC分类号： G01N29/04

    CPC分类号： G01N29/045 ,  G01N2291/0238 ,  G01N2291/0421

    摘要： Methods and apparatuses for non-destructively testing and evaluating mechanical properties of composite materials such as particleboard, plywood, graphic fiber-epoxy composites and other bonded composite materials. The composite material structural elements are subjected to an impact, force or other stress wave producing stimulus. The resulting stress wave is sensed at two different points in time. The speed and attenuaton rate of the stress wave are determined. Measurements of the composite material density are combined with the stress wave speed and attenuation rate into an equation also defined by predetermined experimentally derived parameters. The experimentally derived parameters are specific to the test system, materials, and structural elements being tested. Apparatuses disclosed have sensors which are positioned to determine the stress wave intensity at spaced positions from the stress wave inducing device. The sensors can be retractably mounted and arranged in concentric circles. A singular magnetic sensor for repeatedly detecting a stress wave reflected within a bar or panel is also disclosed.

    摘要翻译： 用于非破坏性地测试和评估复合材料如刨花板，胶合板，图形纤维 - 环氧复合材料和其它粘合复合材料的机械性能的方法和装置。 复合材料结构元件受到冲击，力或其他应力波产生刺激。 产生的应力波在两个不同的时间点被感测。 确定应力波的速度和衰减速率。 将复合材料密度的测量结合应力波速度和衰减率转化为也由预定的实验导出参数定义的方程式。 实验得出的参数是测试系统，材料和被测试的结构元件所特有的。 所公开的装置具有传感器，其被定位成确定与应力波感应装置隔开的位置处的应力波强度。 传感器可以可收回地安装和排列成同心圆。 还公开了用于重复检测在杆或面板内反射的应力波的单一磁传感器。

    Non-destructive evaluation of structural members
    2.
    发明授权
    Non-destructive evaluation of structural members 失效
    结构构件的非破坏性评估

    公开(公告)号：US5024091A

    公开(公告)日：1991-06-18

    申请号：US365218

    申请日：1989-06-12

    申请人： Roy F. Pellerin ,  Robert J. Ross

    发明人： Roy F. Pellerin ,  Robert J. Ross

    IPC分类号： G01N3/30 ,  G01N29/04 ,  G01N33/46

    CPC分类号： G01N29/045 ,  G01N3/30 ,  G01N2203/0623 ,  G01N33/46

    摘要： Disclosed are testing apparatus and methods for estimating mechanical properties of nonhomogeneous materials, such as lumber and other wood materials and composite materials, particularly elongated slender members. The testing is appropriate for estimation of tensile and bending strength, tensile and bending moduli of elasticity and possibly other mechanical properties. The testing apparatus include a test specimen support which holds the specimen during testing in a manner which minimizes attenuation of the stress wave which is intentionally generated in the specimen to help predict the mechanical properties. The specimen supports also preferably include means for weighing the specimen which is combined with size information gathered through an optical scanning system thereby allowing the density to be obtained automatically. The specimens are impacted to produce a moving stress wave which is advantageously a longitudinal stress wave which moves longitudinally through the elongated slender members being reflected within the member preferably a number of times. The amplitude of the moving reflected stress wave is sensing with respect to time to allow the velocity and attenuation rate of the stress wave to be determined. The information is preferably communicated to a computer which automatically processes the sensed information and compares it to preprogrammed parameters which allow the accurate estimation of one or more of the predictable mechanical properties. The tested specimens are advantageously sorted according to the mechanical properties or appropriately marked to indicate the grade, strength or other appropriate measure of value of the specimen.

    摘要翻译： 公开了用于估计非均质材料如木材和其他木材和复合材料，特别是细长纤维构件的机械性能的测试装置和方法。 该测试适合于估计拉伸和弯曲强度，拉伸和弯曲弹性模量以及可能的其它机械性能。 测试装置包括测试样本支撑件，其以测试中有意产生的应力波的衰减最小化的方式在测试期间保持样本，以帮助预测机械性能。 样本支撑体还优选包括用于称量样本的装置，其与通过光学扫描系统收集的尺寸信息组合，从而允许自动获得密度。 冲击试样以产生移动的应力波，该应力波有利地是纵向应力波，该纵向应力波纵向移动穿过细长的细长构件，优选地反复在该构件中多次。 移动反射应力波的振幅相对于时间进行感测，以允许确定应力波的速度和衰减率。 该信息优选地被传送到计算机，该计算机自动地处理所感测的信息并将其与预编程的参数进行比较，这些预编程参数允许精确估计一个或多个可预测的机械特性。 经测试的样品有利地根据机械性能进行分选或适当标记以指示样品的等级，强度或其他适当的测量值。

    Production of polysuccinimide and polyaspartate in thioether solvents
    5.
    发明授权
    Production of polysuccinimide and polyaspartate in thioether solvents 失效
    在硫醚溶剂中生产聚琥珀酰亚胺和聚天冬氨酸酯

    公开(公告)号：US5939522A

    公开(公告)日：1999-08-17

    申请号：US924276

    申请日：1997-09-05

    申请人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino ,  Robert J. Ross

    发明人： Grigory Ya. Mazo ,  Jacob Mazo ,  Barney Vallino ,  Robert J. Ross

    IPC分类号： C08G73/10

    CPC分类号： C08G73/1092 ,  Y02P20/582

    摘要： A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a thioether solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading and relatively low temperatures.

    摘要翻译： 一种在硫醚溶剂存在下通过天冬氨酸的催化聚合制备所需分子量聚琥珀酰亚胺的方法。 相对高的重均分子量和高纯度的聚琥珀酰亚胺可以以相当高的产率生产，同时采用相对低的催化剂负载量和较低的温度。

    Production of polysuccinimide
    7.
    发明授权
    Production of polysuccinimide 失效
    生产聚琥珀酰亚胺

    公开(公告)号：US5466779A

    公开(公告)日：1995-11-14

    申请号：US243955

    申请日：1994-05-17

    申请人： Robert J. Ross

    发明人： Robert J. Ross

    IPC分类号： C08G69/48 ,  C08G73/10 ,  C08G69/00

    CPC分类号： C08G73/1092

    摘要： Polysuccinimide is prepared by reacting ammonia gas with liquid maleic anhydride. The reaction is initially carried out at a temperature which is above the melting point of the maleic anhydride but below the boiling point of liquid maleic anhydride for a time period sufficient for the liquid maleic anhydride to react with the ammonia gas to form a reaction product thereof. The reaction product is subsequently polymerized to polysuccinimide. The present method avoids the prior art problems of water removal and minimizes the need for ammonia handling equipment. The polysuccinimide product can be readily hydrolyzed to polyaspartic acid or a salt thereof, if desired.

    摘要翻译： 聚氨基琥珀酰亚胺通过氨气与液体马来酸酐反应制备。 反应最初在高于马来酸酐的熔点但低于液体马来酐的沸点的温度下进行足够长的时间，以使液体马来酸酐与氨气反应形成其反应产物 。 反应产物随后聚合成聚琥珀酰亚胺。 本方法避免了现有技术的除水问题，并最大限度地减少了对氨处理设备的需求。 如果需要，聚琥珀酰亚胺产物可以容易地水解成聚天冬氨酸或其盐。

    Production of succinimide copolymers in cyclic carbonate solvent
    9.
    发明授权
    Production of succinimide copolymers in cyclic carbonate solvent 失效
    在环状碳酸酯溶剂中生产琥珀酰亚胺共聚物

    公开(公告)号：US06197897B1

    公开(公告)日：2001-03-06

    申请号：US09357682

    申请日：1999-07-20

    申请人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

    发明人： Grigory Ya. Mazo ,  Robert J. Ross ,  James F. Kneller ,  Jacob Mazo

    IPC分类号： C08G7310

    CPC分类号： C08G73/1092

    摘要： A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.

    摘要翻译： 一种通过在环状碳酸酯溶剂存在下天冬氨酸与所选择的多官能单体的催化共聚合制备琥珀酰亚胺共聚物的方法。 相对高的重均分子量和高纯度的琥珀酰亚胺共聚物可以以相当高的产率生产，同时采用相对较低的催化剂负载量。

    Super-absorbing polymeric networks
    10.
    发明授权
    Super-absorbing polymeric networks 有权
    超吸收聚合物网络

    公开(公告)号：US5998492A

    公开(公告)日：1999-12-07

    申请号：US178963

    申请日：1998-10-26

    申请人： Joseph P. Haar, Jr. ,  Robert J. Ross

    发明人： Joseph P. Haar, Jr. ,  Robert J. Ross

    IPC分类号： A61L15/60 ,  C08G73/10 ,  C08J9/28

    CPC分类号： C08J9/28 ,  A61L15/60 ,  C08G73/1092 ,  C08J2377/04

    摘要： Disclosed are methods of producing super-absorbing polymeric networks of polyaspartates from crosslinked polysuccinimide. In one preferred aspect, polysuccinimide is first reacted with an organic crosslinking agent, preferably an organic base containing at least two primary amine groups, to form a gelled crosslinked polysuccinimide. The gelled crosslinked polysuccinimide is then base hydrolyzed to a gelled polymeric network of polyaspartate and deswollen with at least one liquid alcohol to a polymeric network of polyaspartate which demonstrates super-absorbing capability in water and in electrolyte solution. Super-absorbing polymeric networks of polyaspartates can also be produced in a single reaction vessel by sequentially crosslinking a polysuccinimide with an organic crosslinking agent in an aqueous reaction medium, optionally containing a mineral acid, and then hydrolyzing the crosslinked polysuccinimide to produce a polymeric network of polyaspartate.

    摘要翻译： 公开了从交联聚琥珀酰亚胺生产聚天冬氨酸的超吸收聚合物网络的方法。 在一个优选的方面，首先将聚琥珀酰亚胺与有机交联剂，优选含有至少两个伯胺基团的有机碱反应，以形成凝胶状交联的聚琥珀酰亚胺。 然后将凝胶状交联的聚琥珀酰亚胺碱基水解成聚天冬氨酸的凝胶聚合物网络，并用至少一种液态醇解聚到聚天冬氨酸的聚合物网络，其在水和电解质溶液中表现出超吸收能力。 聚天冬氨酸的超吸收聚合物网络也可以通过在含水无机酸的水性反应介质中依次使聚琥珀酰亚胺与有机交联剂交联，然后水解交联聚琥珀酰亚胺以产生聚 聚天冬氨酸