亚洲知识产权资讯网为知识产权业界提供一个一站式网上交易平台，协助业界发掘知识产权贸易商机，并与环球知识产权业界建立联系。无论你是知识产权拥有者正在出售您的知识产权，或是制造商需要购买技术以提高操作效能，又或是知识产权配套服务供应商，你将会从本网站发掘到有用的知识产权贸易资讯。

返回搜索结果

Overvoltage Protection Materials and Process for Preparing Same

总结: Transient high voltages can induce harmful currents and voltages in electronic circuits and electric equipment. Overvoltage protection materials and devices have been developed which aim to protect such electronic and electrical equipment from these transient high voltages. Conventional protection materials were produced by solvent processing method and polycondensation process method. However, the performance of the overvoltage protection devices are reduced due to the presence of solvent either as an added component of the reaction mixture, or as a by-product formed during the curing process. Therefore, an improved and convenient method for preparing overvoltage protection materials is needed.

The invention provides a novel process for preparing a new overvoltage protection material including preparing a mixture comprising a polymer binder precursor and a conductive material heating the mixture to cause reaction of the polymer binder precursor, and thus generating a polymer matrix having conductive material dispersed therein. The new process is a complete solvent-free methodology. The material produced using this method behaves like electrical insulators under normal operation, but switch to become conductors under high transient voltage. It also has a high degree of heat resistance.

技术优势: 1. Preparation procedure is very simple
2. Problems of currently available solvent methodology including high temperature, solvent evaporation are overcome
3. The process is cleaner

技术应用: - Overvoltage protection material used on a wide range of circuit protection devices in the electronic industries

附加资料: Patent Number: US7763185B2
Application Number: US2007624640A
Inventor: Chan, Chi-Ming | Ng, Kai-Mo | Wong, Catherine Yuen-Chien | Cheung, Ying Kit
Priority Date: 21 Oct 2002
Priority Number: US7763185B2
Application Date: 18 Jan 2007
Publication Date: 27 Jul 2010
IPC Current: H01C000700 | H01B000122 | H01C000710 | H01C000713 | H05K000102 | H05K000116
US Class: 252500 | 252502 | 252512 | 2525181 | 264104 | 338022R | 338022SD | 428447
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Overvoltage protection materials and process for preparing same
Usefulness: Overvoltage protection materials and process for preparing same
Summary: For circuit (claimed).
Novelty: Overvoltage protection device for circuit, has overvoltage protection material prepared by heating mixture containing polymer binder precursor(s) of preset property and conductive material

欲了解更多信息，请点击这里