Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PTCR thermal sensitive ceramic material and preparation method thereof
The invention discloses a PTCR thermal sensitive ceramic material and a preparation method thereof, the method comprises the following steps: a, adding z mol% of CaSO4 into BaTiO3, PbTiO3 and MnO2 as powder, the value range of z being more than 0 and less than or equal to 2.0; b, weighing materials according to a material formula, ball-milling the powder and the ingredients for a preset time by taking zirconium oxide balls and deionized water as media, and then drying to obtain mixed powder; c, adding polyvinyl alcohol which is 3.0-12.0 wt% of the weight of the mixed powder and has the concentration of 10 wt% into the mixed powder for granulation, and pressing at the pressure of 10-15 MPa to obtain a biscuit; and d, placing the pressed biscuit in an air atmosphere at 1230-1300 DEG C, and fully sintering the biscuit to obtain the ceramic. According to the preparation method, the room-temperature resistance attenuation rate and the lift-drag ratio attenuation rate of the prepared PTCR ceramic chip are reduced, and the performance is obviously improved.
本申请公开了一种PTCR热敏陶瓷材料及其制备方法，该方法包括如下步骤：a.往BaTiO3、PbTiO3、MnO2中添加z mol％的CaSO4作为粉体，所述z的取值范围为0＜z≤2.0；b.根据材料配方称料，以氧化锆球和去离子水作为介质，球磨所述粉体和配料预设时间后烘干，得到混合粉末；c.在所述混合粉末中加入所述混合粉末重量的3.0～12.0wt％、浓度为10wt％的聚乙烯醇进行造粒，再以10～15MPa的压力压制成素坯；d.将压制好的所述素坯置于1230～1300℃的空气气氛中使其充分烧结为陶瓷。在本申请中，制得的PTCR陶瓷片室温电阻衰减率和升阻比衰减率降低，性能得到明显改善。
PTCR thermal sensitive ceramic material and preparation method thereof
The invention discloses a PTCR thermal sensitive ceramic material and a preparation method thereof, the method comprises the following steps: a, adding z mol% of CaSO4 into BaTiO3, PbTiO3 and MnO2 as powder, the value range of z being more than 0 and less than or equal to 2.0; b, weighing materials according to a material formula, ball-milling the powder and the ingredients for a preset time by taking zirconium oxide balls and deionized water as media, and then drying to obtain mixed powder; c, adding polyvinyl alcohol which is 3.0-12.0 wt% of the weight of the mixed powder and has the concentration of 10 wt% into the mixed powder for granulation, and pressing at the pressure of 10-15 MPa to obtain a biscuit; and d, placing the pressed biscuit in an air atmosphere at 1230-1300 DEG C, and fully sintering the biscuit to obtain the ceramic. According to the preparation method, the room-temperature resistance attenuation rate and the lift-drag ratio attenuation rate of the prepared PTCR ceramic chip are reduced, and the performance is obviously improved.
本申请公开了一种PTCR热敏陶瓷材料及其制备方法，该方法包括如下步骤：a.往BaTiO3、PbTiO3、MnO2中添加z mol％的CaSO4作为粉体，所述z的取值范围为0＜z≤2.0；b.根据材料配方称料，以氧化锆球和去离子水作为介质，球磨所述粉体和配料预设时间后烘干，得到混合粉末；c.在所述混合粉末中加入所述混合粉末重量的3.0～12.0wt％、浓度为10wt％的聚乙烯醇进行造粒，再以10～15MPa的压力压制成素坯；d.将压制好的所述素坯置于1230～1300℃的空气气氛中使其充分烧结为陶瓷。在本申请中，制得的PTCR陶瓷片室温电阻衰减率和升阻比衰减率降低，性能得到明显改善。
PTCR thermal sensitive ceramic material and preparation method thereof
一种PTCR热敏陶瓷材料及其制备方法
SHENG CHENHAO (Autor:in) / SONG ZEJUN (Autor:in) / WANG QIAN (Autor:in) / ZHU XINGWEN (Autor:in)
23.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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