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Thermal sensitive ceramic material with low resistance value and negative temperature coefficient and preparation method thereof
The invention relates to a low-resistance negative-temperature-coefficient thermal sensitive ceramic material and a preparation method thereof.The preparation method comprises the steps that cupric acetate, cobaltous acetate, nickel acetate, manganese acetate and oxalic acid are evenly mixed and then subjected to ball milling together with a grinding medium material and a dispersing agent, obtained powder is dried and calcined, then secondary ball milling and drying are conducted, then sieving is conducted, an adhesive is added for granulation, and the low-resistance negative-temperature-coefficient thermal sensitive ceramic material is obtained; and then carrying out compression molding, calcining the molded green body, and finally cooling to obtain the product. The thermal sensitive ceramic material with low resistance and negative temperature coefficient prepared by the invention has the characteristics of good compactness, high stability, high precision, excellent conductivity, suitability for industrial production and the like, the room temperature resistivity is 28.0-993.8 omega.cm, the B value is 3056-3548K, the aging value is 2.38-4.08%, and the thermal sensitive ceramic material is particularly suitable for the technical fields of low-temperature measurement, surge current suppression and the like.
本发明涉及一种低阻值负温度系数热敏陶瓷材料及其制备方法，将乙酸铜、乙酸钴、乙酸镍、乙酸锰及草酸混合均匀后，与磨介材料和分散剂一起球磨，将得到的粉末干燥后煅烧，然后二次球磨，烘干后过筛，随后加入粘合剂进行造粒，然后模压成型，将成型后的坯体煅烧，最后冷却，即得。本发明制得的低阻值负温度系数热敏陶瓷材料具有致密性好、稳定性高、精度高、导电性能优良、适合工业化生产等特点，室温电阻率为28.0～993.8Ω·cm，B值为3056～3548K，老化值为2.38％～4.08％，特别适合用于低温测量及抑制浪涌电流等技术领域。
Thermal sensitive ceramic material with low resistance value and negative temperature coefficient and preparation method thereof
The invention relates to a low-resistance negative-temperature-coefficient thermal sensitive ceramic material and a preparation method thereof.The preparation method comprises the steps that cupric acetate, cobaltous acetate, nickel acetate, manganese acetate and oxalic acid are evenly mixed and then subjected to ball milling together with a grinding medium material and a dispersing agent, obtained powder is dried and calcined, then secondary ball milling and drying are conducted, then sieving is conducted, an adhesive is added for granulation, and the low-resistance negative-temperature-coefficient thermal sensitive ceramic material is obtained; and then carrying out compression molding, calcining the molded green body, and finally cooling to obtain the product. The thermal sensitive ceramic material with low resistance and negative temperature coefficient prepared by the invention has the characteristics of good compactness, high stability, high precision, excellent conductivity, suitability for industrial production and the like, the room temperature resistivity is 28.0-993.8 omega.cm, the B value is 3056-3548K, the aging value is 2.38-4.08%, and the thermal sensitive ceramic material is particularly suitable for the technical fields of low-temperature measurement, surge current suppression and the like.
本发明涉及一种低阻值负温度系数热敏陶瓷材料及其制备方法，将乙酸铜、乙酸钴、乙酸镍、乙酸锰及草酸混合均匀后，与磨介材料和分散剂一起球磨，将得到的粉末干燥后煅烧，然后二次球磨，烘干后过筛，随后加入粘合剂进行造粒，然后模压成型，将成型后的坯体煅烧，最后冷却，即得。本发明制得的低阻值负温度系数热敏陶瓷材料具有致密性好、稳定性高、精度高、导电性能优良、适合工业化生产等特点，室温电阻率为28.0～993.8Ω·cm，B值为3056～3548K，老化值为2.38％～4.08％，特别适合用于低温测量及抑制浪涌电流等技术领域。
Thermal sensitive ceramic material with low resistance value and negative temperature coefficient and preparation method thereof
一种低阻值负温度系数热敏陶瓷材料及其制备方法
MA CHENGJIAN (author) / MA ZHANGCHAO (author) / RUAN HAIYUN (author) / GAO HONG (author)
2024-12-31
Patent
Electronic Resource
Chinese
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