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Preparation method of high-nonlinearity pressure-sensitive ceramic
The invention relates to a preparation method of a high-nonlinearity pressure-sensitive ceramic, and belongs to the technical field of pressure-sensitive ceramic. Silicon dioxide-magnesium oxide-stannic oxide composite aerogel prepared by a sol-gel method is used as a filler; zinc oxide and bismuth oxide are used as raw materials, and the raw materials are compounded with polyurethane rubber to prepare the high-nonlinearity pressure-sensitive ceramic. Aerogel is a novel light nano-porous amorphous solid material with a controllable structure, due to the specific nano-porous and three-dimensional network structure of aerogel, aerogel has a plurality of unique properties, such as high porosity, low density, low thermal conductivity and the like; due to the fact that a quantum dot structure is formed in a nano network of silicon dioxide aerogel, magnesium oxide and stannic oxide are doped through a synchronous sol-gel method, the nonlinear coefficient of the pressure-sensitive ceramic canbe effectively increased; and due to doping of magnesium oxide, the prepared pressure-sensitive ceramic has good electrical properties such as residual voltage ratio, nonlinear coefficient and voltage gradient.
本发明涉及一种高非线性压敏陶瓷的制备方法，属于压敏陶瓷技术领域。本发明采用溶胶‑凝胶法制备出二氧化硅‑氧化镁‑二氧化锡复合气凝胶作为填料，以氧化锌、氧化铋为原料，和聚氨酯橡胶复合制备出一种高非线性压敏陶瓷；气凝胶是一种结构可控的新型轻质纳米多孔性非晶固态材料，由于它特有的纳米多孔、三维网络结构，气凝胶具有许多独特的性能，尤其表现在高孔隙率、低密度、低热导率等方面；由于二氧化硅气凝胶的纳米网络内形成量子点结构，通过同步溶胶‑凝胶法掺杂氧化镁和二氧化锡，能有效提高压敏陶瓷的非线性系数；本发明中氧化镁的掺杂，使得制备的压敏陶瓷具有较好的残压比、非线性系数、电压梯度等电学特性。
Preparation method of high-nonlinearity pressure-sensitive ceramic
The invention relates to a preparation method of a high-nonlinearity pressure-sensitive ceramic, and belongs to the technical field of pressure-sensitive ceramic. Silicon dioxide-magnesium oxide-stannic oxide composite aerogel prepared by a sol-gel method is used as a filler; zinc oxide and bismuth oxide are used as raw materials, and the raw materials are compounded with polyurethane rubber to prepare the high-nonlinearity pressure-sensitive ceramic. Aerogel is a novel light nano-porous amorphous solid material with a controllable structure, due to the specific nano-porous and three-dimensional network structure of aerogel, aerogel has a plurality of unique properties, such as high porosity, low density, low thermal conductivity and the like; due to the fact that a quantum dot structure is formed in a nano network of silicon dioxide aerogel, magnesium oxide and stannic oxide are doped through a synchronous sol-gel method, the nonlinear coefficient of the pressure-sensitive ceramic canbe effectively increased; and due to doping of magnesium oxide, the prepared pressure-sensitive ceramic has good electrical properties such as residual voltage ratio, nonlinear coefficient and voltage gradient.
本发明涉及一种高非线性压敏陶瓷的制备方法，属于压敏陶瓷技术领域。本发明采用溶胶‑凝胶法制备出二氧化硅‑氧化镁‑二氧化锡复合气凝胶作为填料，以氧化锌、氧化铋为原料，和聚氨酯橡胶复合制备出一种高非线性压敏陶瓷；气凝胶是一种结构可控的新型轻质纳米多孔性非晶固态材料，由于它特有的纳米多孔、三维网络结构，气凝胶具有许多独特的性能，尤其表现在高孔隙率、低密度、低热导率等方面；由于二氧化硅气凝胶的纳米网络内形成量子点结构，通过同步溶胶‑凝胶法掺杂氧化镁和二氧化锡，能有效提高压敏陶瓷的非线性系数；本发明中氧化镁的掺杂，使得制备的压敏陶瓷具有较好的残压比、非线性系数、电压梯度等电学特性。
Preparation method of high-nonlinearity pressure-sensitive ceramic
一种高非线性压敏陶瓷的制备方法
LEI HONGYUN (author)
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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