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Ceramic-polymer composites obtained by cold sintering process using reactive monomer approach

A reactive oligomer, sintered ceramic technology, applied in ceramic products, applications, household appliances, etc., can solve problems such as increasing the cost of manufacturing materials

Inactive Publication Date: 2020-02-14
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of high sintering temperatures precludes the manufacture of certain types of materials and increases the expense of the manufactured materials

Method used

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  • Ceramic-polymer composites obtained by cold sintering process using reactive monomer approach
  • Ceramic-polymer composites obtained by cold sintering process using reactive monomer approach
  • Ceramic-polymer composites obtained by cold sintering process using reactive monomer approach

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] The powdered MoO 3 Mixed with monomers such as acrylates or cyclic ethers. To the resulting mixture was added deionized water or alcohol solvent (1-2 wt%).

[0100] Alternatively, the monomers are first dissolved in one or more organic solvents and then mixed with MoO 3 Powder blending. The solvent or solvent mixture is then removed, after which water (1-2 wt%) is introduced prior to sintering.

[0101] The mixture was stirred in a mortar and pestle and then hot pressed with a steel die at 120°C under uniaxial pressure of about 50-600 MPa into dense pellets (~10 mm in diameter and ~1-2 mm in height) ). The cold sintering process is carried out simultaneously with the polymerization, or the polymerization is initiated before the cold sintering process. The mold was kept at 120°C for more than 1 hour. Finally, the pellets of cold sintered ceramic polymer composite were removed and placed in an oven at 120°C for 6 hours to remove any residual water.

Embodiment 2

[0103] The powdered MoO 3 Mix with deionized water or alcohol (1-2 wt%) to obtain a mixture. The mixture was stirred in a mortar and pestle, and the moist mixture was hot pressed into dense pellets (~10 mm in diameter and ~1-2 mm in height) with a steel die at 120°C under uniaxial pressure of about 50-600 MPa. The mold was kept at 120°C for more than 1 hour. The resulting pre-sintered ceramic is mixed with monomers such as acrylates or cyclic ethers, and the monomers are polymerized, optionally in the presence of a polymerization catalyst. The resulting pellets were placed in an oven at 120°C for 6 hours to remove any traces of water residues, resulting in a cold sintered ceramic polymer composite.

Embodiment 3

[0105] The powdered MoO 3 Mixed with reactive monomers such as acrylates or cyclic ethers, then pressed into soft pellets at room temperature under low pressure (30-70 MPa). The pellets are then exposed to a humid atmosphere (eg, water vapor generated by heating deionized water or in a humidity chamber) for 10-360 minutes. Then, at a temperature of 120° C. and a uniaxial pressure of 80-570 MPa, the wet pellets are hot-pressed into dense pellets with a steel die. The mold was kept at 120°C for more than 1 hour. Finally, the pellets were placed in an oven at 120° C. for 6 hours to remove any water residues, resulting in a cold sintered ceramic polymer composite.

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Abstract

Described herein are cold-sintered ceramic polymer composites and processes for making them from ceramic precursor materials and monomers and / or oligomers. The cold sintering process and wide varietyof monomers permit the incorporation of diverse polymeric materials into the ceramic.

Description

[0001] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 379,855, filed August 26, 2016, which is incorporated in its entirety as if fully set forth herein. Background technique [0002] Many ceramics and composites are sintered to reduce porosity and enhance material properties such as strength, electrical conductivity, translucency, and thermal conductivity. The sintering process involves the application of high temperatures (typically above 1,000°C) to densify and improve the properties of the material. However, the use of high sintering temperatures precludes the manufacture of certain types of materials and increases the cost of the materials to be manufactured. [0003] Certain low-temperature methods for sintering ceramics can address some of the challenges associated with high-temperature sintering. For example, ultra-low temperature co-fired ceramics (ULTCC) can be fired between 450°C and 750°C. See, eg, He et al., "Low-Te...

Claims

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Application Information

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IPC IPC(8): C04B35/634C04B35/626C04B35/645C04B35/447C04B35/453C04B35/486C04B35/488C04B35/495C04B35/515C04B35/553C04B41/83
CPCC04B35/447C04B35/453C04B35/486C04B35/488C04B35/495C04B35/5152C04B35/553C04B35/6263C04B35/6264C04B35/62685C04B35/6269C04B35/634C04B35/63404C04B35/63408C04B35/63436C04B35/63444C04B35/6346C04B35/645C04B41/009C04B41/48C04B41/83C04B2235/3201C04B2235/3203C04B2235/3256C04B2235/442C04B2235/444C04B2235/448C04B2235/5436C04B2235/5445C04B2235/5481C04B2235/604C04B2235/616C04B2235/656C04B2235/6588C04B2235/662C04B2235/77C04B2235/9607C04B35/00C04B38/00C04B41/4578C04B35/6303C04B35/63456C04B35/63468C04B35/63488C04B2235/3206C04B2235/3215C04B2235/3229C04B2235/3232C04B2235/3239C04B2235/3272
Inventor 埃里克·施瓦茨托马斯·L·埃文斯特奥多鲁斯·霍克斯罗伯特·迪尔克·范·德·格兰佩尔基耶尔·阿尔贝图斯·伦德斯马克·约翰·阿姆斯特朗
Owner SHPP GLOBAL TECH BV
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