Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of heteroatom modified titanate thermistor material
The invention discloses a preparation method of a heteroatom modified titanate thermistor material. The heating and cooling rate, the highest temperature and the heat preservation time of a furnace are adjusted; the heating rate before 800 DEG C is reduced, an added adhesive can be completely discharged during granulation, and the situation that the pressure resistance is reduced due to the fact that an undischarged adhesive is subjected to anoxic carbonization in a porcelain body is prevented; the heating rate after 800 DEG C is increased, the highest sintering temperature is reduced, and abnormal growth of crystal grains caused by too slow heating is prevented; the heat preservation time is shortened to prevent the porcelain body from deforming at high temperature and prevent crystal grains from abnormally growing; and the cooling rate is reduced, the grain structure of the product can be improved and is enabled to be uniform during cooling, the temperature resistance characteristicof the material is improved, the B value constant of the material is increased, and the withstand voltage Vb is enhanced.
本发明公开了一种杂原子改性钛酸盐热敏电阻材料的制备方法。本发明调整结炉升降温速率、最高温度、保温时间；降低了800℃以前用的升温速率，有助于在造粒时加入的粘合剂完全排出，防止未排出的粘合剂由于缺氧碳化在瓷体内，造成耐压降低；提升了800℃之后的升温速率，降低了烧结的最高温度，防止升温过慢造成晶粒异常生长；缩短保温时间可防止瓷体在高温下变形，晶粒异常生长；降低降温速率，有助于产品在降温时改善晶粒结构、使其均匀，提高材料阻温特性，提高材料B值常数，增强耐电压Vb。
Preparation method of heteroatom modified titanate thermistor material
The invention discloses a preparation method of a heteroatom modified titanate thermistor material. The heating and cooling rate, the highest temperature and the heat preservation time of a furnace are adjusted; the heating rate before 800 DEG C is reduced, an added adhesive can be completely discharged during granulation, and the situation that the pressure resistance is reduced due to the fact that an undischarged adhesive is subjected to anoxic carbonization in a porcelain body is prevented; the heating rate after 800 DEG C is increased, the highest sintering temperature is reduced, and abnormal growth of crystal grains caused by too slow heating is prevented; the heat preservation time is shortened to prevent the porcelain body from deforming at high temperature and prevent crystal grains from abnormally growing; and the cooling rate is reduced, the grain structure of the product can be improved and is enabled to be uniform during cooling, the temperature resistance characteristicof the material is improved, the B value constant of the material is increased, and the withstand voltage Vb is enhanced.
本发明公开了一种杂原子改性钛酸盐热敏电阻材料的制备方法。本发明调整结炉升降温速率、最高温度、保温时间；降低了800℃以前用的升温速率，有助于在造粒时加入的粘合剂完全排出，防止未排出的粘合剂由于缺氧碳化在瓷体内，造成耐压降低；提升了800℃之后的升温速率，降低了烧结的最高温度，防止升温过慢造成晶粒异常生长；缩短保温时间可防止瓷体在高温下变形，晶粒异常生长；降低降温速率，有助于产品在降温时改善晶粒结构、使其均匀，提高材料阻温特性，提高材料B值常数，增强耐电压Vb。
Preparation method of heteroatom modified titanate thermistor material
杂原子改性钛酸盐热敏电阻材料的制备方法
JI JIA (Autor:in) / HOU YINLING (Autor:in) / ZHOU FAN (Autor:in) / LI YUANXUN (Autor:in) / HU ANPING (Autor:in) / YU XIBEI (Autor:in)
04.12.2020
Patent
Elektronische Ressource
Chinesisch
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