公开(公告)号：US20220003626A1

公开(公告)日：2022-01-06

申请号：US16995955

申请日：2020-08-18

申请人： William Smith ,  Ying Li ,  Duncan Hywel-Evans

发明人： William Smith ,  Ying Li ,  Duncan Hywel-Evans

IPC分类号： G01M3/00

摘要： A leak detection system and method of use thereof is disclosed based on shock wave propagation in a fluid. In one form, the system includes at least one shock wave generator for introducing at least one shock wave signal into a fluid medium; at least one detector for detecting signals in the fluid medium; and at least one processor configured to identify excitation signals in the fluid medium caused by the at least one shock wave signal, wherein the identification of excitation signals is indicative of a fluid leak.

公开(公告)号：US20120004338A1

公开(公告)日：2012-01-05

申请号：US13141656

申请日：2009-12-18

申请人： Duncan Hywel-Evans

发明人： Duncan Hywel-Evans

IPC分类号： C09D179/04 ,  B32B37/12 ,  C08G73/06

CPC分类号： C08G18/6423 ,  C08G18/10 ,  C08G18/4854 ,  C08G18/792 ,  C08G2101/00 ,  C09D175/12 ,  C08G18/64

摘要： The present invention provides a method of forming a polymer, the method comprising reacting a first species comprising at least one isocyanate group with a second species comprising at least one aziridine group to form the polymer.

摘要翻译： 本发明提供了形成聚合物的方法，该方法包括使包含至少一个异氰酸酯基的第一种与包含至少一个氮丙啶基的第二种形成反应，形成聚合物。

公开(公告)号：US06664316B1

公开(公告)日：2003-12-16

申请号：US09000028

申请日：1998-01-16

申请人： Duncan Hywel-Evans

发明人： Duncan Hywel-Evans

IPC分类号： C08L6700

CPC分类号： E21D20/025 ,  C08L67/06

摘要： A cross-linkable polyester resin composition for use with a reinforcing element for reinforcing rock and other structures, comprises: (a) from 10 to 45% of a cross-linkable unsaturated polyester resin, (b) from 40 to 90% of a filter and (c) from 1 to 15% of an ethylenically unsaturated monomer copolymerizable with the polyester, the percentages being by weight based on the total weight of (a), (b) and (c), the composition being solid but permitting insertion and rotation of a reinforcing element to cause mixing of the composition with a cross-linking catalyst to form a hard mass. Composition will cold cure when mixed with catalyst preferably the monomer has higher flash point than styrene. Advantage of the solid composition is that it does not need to be enclosed within frangible sheath as in the prior art.

摘要翻译： 一种与用于增强岩石和其他结构的增强元件一起使用的可交联聚酯树脂组合物包括：（a）10至45％的可交联不饱和聚酯树脂，（b）40至90％的过滤器 和（c）1至15％的可与聚酯共聚的烯键式不饱和单体，其百分数以（a），（b）和（c）的总重量为基准计，组合物为固体但允许插入和 加强元件的旋转以使组合物与交联催化剂混合以形成硬质块。 当与催化剂混合时，组合物将冷固化，优选单体具有高于苯乙烯的闪点。 固体组合物的优点在于它不需要像现有技术那样被包封在易碎的鞘内。