A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Negative thermal expansion material ABC (MoO4) 3 and preparation method thereof
The invention belongs to the field of thermal expansion materials, and discloses a negative thermal expansion material ABC (MoO4) 3 and a preparation method thereof. A is Na, K or Rb, B is Mg or Mn, and C is Fe, Sc, In or Lu. The preparation method comprises the following steps: (1) selecting A2CO3, BO, C2O3 and MoO3 as raw materials, grinding and uniformly mixing the A2CO3, BO, C2O3 and MoO3 according to a stoichiometric molar ratio of A: B: C: Mo of 1: 1: 1: 3 in a target product ABC (MoO4) 3, and sintering the obtained mixed powder at 500-600 DEG C for 6-10 hours; and (2) grinding the sintered product obtained in the step (1) into powder, tabletting, sintering at 650-900 DEG C for 10-24 hours, and cooling to room temperature to obtain the target product ABC (MoO4) 3. The ABC (MoO4) 3 series materials are synthesized and all have negative thermal expansion performance, the synthesis process is simple and reliable, and the repeatability is high; the ABC (MoO4) 3 series material can be compounded with a positive thermal expansion material, so that a zero thermal expansion material is produced and is expected to be applied to the high and new technology fields of biomedical materials, aerospace equipment, precise instruments and the like.
本发明属于热膨胀材料领域，公开一种负热膨胀材料ABC(MoO4)3及其制备方法。A=Na、K或Rb，B=Mg或Mn，C=Fe、Sc、In或Lu。制备步骤如下：（1）、选取A2CO3、BO、C2O3和MoO3为原料，将A2CO3、BO、C2O3和MoO3按照目标产物ABC(MoO4)3中化学计量摩尔比A∶B∶C∶Mo=1∶1∶1∶3研磨混合均匀，将得到的混合粉末在500‑600℃下烧结6‑10h；（2）、将步骤（1）所得烧结产物研磨成粉压片后在650‑900℃烧结10‑24h，冷却至室温后，得到目标产物ABC(MoO4)3。本发明对ABC(MoO4)3系列材料进行合成，并且全部具有负热膨胀性能，其合成过程简单可靠，重复性高；ABC(MoO4)3系列材料可以和正热膨胀材料复合，从而生产出零热膨胀材料，有望在生物医用材料、航空航天装备、精密仪器等高新技术领域获得应用。
Negative thermal expansion material ABC (MoO4) 3 and preparation method thereof
The invention belongs to the field of thermal expansion materials, and discloses a negative thermal expansion material ABC (MoO4) 3 and a preparation method thereof. A is Na, K or Rb, B is Mg or Mn, and C is Fe, Sc, In or Lu. The preparation method comprises the following steps: (1) selecting A2CO3, BO, C2O3 and MoO3 as raw materials, grinding and uniformly mixing the A2CO3, BO, C2O3 and MoO3 according to a stoichiometric molar ratio of A: B: C: Mo of 1: 1: 1: 3 in a target product ABC (MoO4) 3, and sintering the obtained mixed powder at 500-600 DEG C for 6-10 hours; and (2) grinding the sintered product obtained in the step (1) into powder, tabletting, sintering at 650-900 DEG C for 10-24 hours, and cooling to room temperature to obtain the target product ABC (MoO4) 3. The ABC (MoO4) 3 series materials are synthesized and all have negative thermal expansion performance, the synthesis process is simple and reliable, and the repeatability is high; the ABC (MoO4) 3 series material can be compounded with a positive thermal expansion material, so that a zero thermal expansion material is produced and is expected to be applied to the high and new technology fields of biomedical materials, aerospace equipment, precise instruments and the like.
本发明属于热膨胀材料领域，公开一种负热膨胀材料ABC(MoO4)3及其制备方法。A=Na、K或Rb，B=Mg或Mn，C=Fe、Sc、In或Lu。制备步骤如下：（1）、选取A2CO3、BO、C2O3和MoO3为原料，将A2CO3、BO、C2O3和MoO3按照目标产物ABC(MoO4)3中化学计量摩尔比A∶B∶C∶Mo=1∶1∶1∶3研磨混合均匀，将得到的混合粉末在500‑600℃下烧结6‑10h；（2）、将步骤（1）所得烧结产物研磨成粉压片后在650‑900℃烧结10‑24h，冷却至室温后，得到目标产物ABC(MoO4)3。本发明对ABC(MoO4)3系列材料进行合成，并且全部具有负热膨胀性能，其合成过程简单可靠，重复性高；ABC(MoO4)3系列材料可以和正热膨胀材料复合，从而生产出零热膨胀材料，有望在生物医用材料、航空航天装备、精密仪器等高新技术领域获得应用。
Negative thermal expansion material ABC (MoO4) 3 and preparation method thereof
一种负热膨胀材料ABC(MoO4)3及其制备方法
GAO QILONG (author) / ZHAO HUAN (author) / WANG QINGJIE (author) / HOU HAOWEN (author) / YANG LUN (author) / QIAO YONGQIANG (author)
2024-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Negative thermal expansion ceramic material ScxIn2-xW3O12 and preparation method thereof
| European Patent Office | 2016
Negative thermal expansion coefficient material TaMIV (PO4) 3 and preparation method thereof
| European Patent Office | 2024
NEGATIVE THERMAL EXPANSION MATERIAL, MANUFACTURING METHOD AND COMPOSITE MATERIAL THEREOF
| European Patent Office | 2021
NEGATIVE THERMAL EXPANSION MATERIAL, PRODUCTION METHOD THEREOF, AND COMPOSITE MATERIAL
| European Patent Office | 2023
Negative thermal expansion material, manufacturing method and composite material thereof
| European Patent Office | 2022