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Multi-photon polymerizable pre-ceramic polymeric compositions

A composition and multi-photon technology, applied in the fields of optics, opto-mechanical equipment, instruments, etc., can solve the problems of low photopolymerization speed, etc., and achieve the effect of increasing use, high cross-linking density, and enhancing multi-photon photosensitivity

Inactive Publication Date: 2007-12-26
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Efforts have been made to produce ceramic microstructures using free radical-initiated photopolymerization of liquid silazanes, however, only low photopolymerization rates have been observed

Method used

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  • Multi-photon polymerizable pre-ceramic polymeric compositions
  • Multi-photon polymerizable pre-ceramic polymeric compositions
  • Multi-photon polymerizable pre-ceramic polymeric compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] Cured thiol-ene precursor ceramic composition

[0155]By dissolving dichloromethyltriazine (BTCMT) (0.040g) and Dye 1 (0.019g) in dichloromethane (0.54g) in a brown bottle (10ml), VL20 (42.00g) was added thereto , tetravinylsilane (0.075 g) and pentaerythritol tris(3-mercaptopropionate) (PETMP) (1.0 g). The mixture was then placed in an orbital shaker (VWR, Model DS-500) for 10 minutes to provide a solution. A few drops of the mixture were placed on a clean glass slide adhered between two pieces of tape (SCOTCH 810 MAGIC TAPE, available from 3M Company, St. Paul, MN) adhered approximately 1 cm from each side. A glass coverslip was then placed on the mixture. Two-photon polymerization was performed using a diode injection pumped Ti:sapphire laser (Spectra-Physics, Mountain View, CA) operating at a wavelength of 800 nm, a nominal pulse width of 45 fs, a pulse repetition rate of 80 MHz, and a beam diameter of approximately 1.5 mm. The optical system consists of a low-di...

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Abstract

A multi-photon reactive composition comprises an ethylenically unsaturated liquid polysilazane precursor, a multi-functional thiol additive, a multi-ethylenically-unsaturated additive different from the polysilazane, and a multi-photon photocuring composition. The invention can be used to provide ceramic-based microstructures as, for example, high temperature resistant materials, including devices such as microcombustors, micro-heat-exchangers, sensor and actuator systems, microfluidic devices, and micro-optics systems that can be used independently or integrated into other systems.

Description

[0001] priority statement [0002] This application claims priority to U.S. Provisional Application No. 60 / 639,904, filed December 29,2004. technical field [0003] The present invention relates to compositions comprising polysilazanes or polysiloxazanes which are useful for providing ceramic-based microstructures for eg high temperature electronics, telecommunications and biological applications. Background technique [0004] Ceramic materials are well known and widely used in different fields of application due to some of their outstanding properties such as high modulus, stiffness, high temperature stability and chemical resistance. However, they are also heavy, brittle and difficult to process. On the other hand, organic polymers are tough, soft, light and easy to process, while their low modulus and relatively low decomposition temperature are their major drawbacks. Pre-ceramic polymer technology is emerging as a promising method for producing materials that share the...

Claims

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Application Information

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IPC IPC(8): C09D183/16C08K5/3492G03F7/00
CPCB82Y10/00C04B2235/483C04B2235/665G03F7/0275C09D183/16C04B35/589G03F7/0757B82Y30/00G03F7/2053B33Y70/00C08L2666/44C08L2666/24C09D183/14C09D183/00
Inventor 戴维·S·阿尼白峰
Owner 3M INNOVATIVE PROPERTIES CO