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Method for preparing porous block aerogel for adsorbing and degrading VOCs gas through 3D printing technology
The invention relates to a method for preparing porous block aerogel for adsorbing and degrading VOCs (Volatile Organic Compounds) gas through a 3D (Three-Dimensional) printing technology. Isopropanol, polydimethylsiloxane and hydroxypropyl methyl cellulose are evenly mixed, the silicon dioxide aerogel powder and the titanium dioxide photocatalytic powder are added, and 3D printing slurry is prepared through ball milling and mixing; then preparing the aerogel into a macroscopic porous 3D printing aerogel sample with a specific structure through a direct writing type 3D printer; then carrying out aging treatment at normal temperature, and carrying out drying treatment at a proper temperature to remove the organic solvent and further crosslink and cure the binder to provide certain mechanical strength; and finally, carrying out heat treatment in an electric furnace to obtain the 3D printing silicon dioxide aerogel for VOCs adsorption and degradation. The adsorption performance of the 3D printing silicon dioxide aerogel on VOCs (volatile organic compounds) represented by formaldehyde and methylbenzene is higher than that of commercially available activated carbon by 20% or above, the absorption rate can reach 100%, and the degradation rate can reach 25% or above.
本发明涉及一种3D打印技术制备多孔块体气凝胶用于吸附与降解VOCs气体的方法。将异丙醇、聚二甲基硅氧烷、羟丙基甲基纤维素均匀混合，加入二氧化硅气凝胶粉体、二氧化钛光催化粉体，通过球磨混合制备3D打印浆料；然后通过直写型3D打印机将其制备成特定结构宏观多孔的3D打印气凝胶样品；随后在常温下进行陈化处理，并在适当温度下进行干燥处理来去除其中的有机溶剂并使粘结剂进一步交联固化来提供一定力学强度；最后将其于电炉中进行热处理得到用于VOCs吸附与降解的3D打印二氧化硅气凝胶。3D打印二氧化硅气凝胶对以甲醛、甲苯为代表的VOCs吸附性能高于市售活性炭20％以上，吸收率可达100％，降解率可达25％以上。
Method for preparing porous block aerogel for adsorbing and degrading VOCs gas through 3D printing technology
The invention relates to a method for preparing porous block aerogel for adsorbing and degrading VOCs (Volatile Organic Compounds) gas through a 3D (Three-Dimensional) printing technology. Isopropanol, polydimethylsiloxane and hydroxypropyl methyl cellulose are evenly mixed, the silicon dioxide aerogel powder and the titanium dioxide photocatalytic powder are added, and 3D printing slurry is prepared through ball milling and mixing; then preparing the aerogel into a macroscopic porous 3D printing aerogel sample with a specific structure through a direct writing type 3D printer; then carrying out aging treatment at normal temperature, and carrying out drying treatment at a proper temperature to remove the organic solvent and further crosslink and cure the binder to provide certain mechanical strength; and finally, carrying out heat treatment in an electric furnace to obtain the 3D printing silicon dioxide aerogel for VOCs adsorption and degradation. The adsorption performance of the 3D printing silicon dioxide aerogel on VOCs (volatile organic compounds) represented by formaldehyde and methylbenzene is higher than that of commercially available activated carbon by 20% or above, the absorption rate can reach 100%, and the degradation rate can reach 25% or above.
本发明涉及一种3D打印技术制备多孔块体气凝胶用于吸附与降解VOCs气体的方法。将异丙醇、聚二甲基硅氧烷、羟丙基甲基纤维素均匀混合，加入二氧化硅气凝胶粉体、二氧化钛光催化粉体，通过球磨混合制备3D打印浆料；然后通过直写型3D打印机将其制备成特定结构宏观多孔的3D打印气凝胶样品；随后在常温下进行陈化处理，并在适当温度下进行干燥处理来去除其中的有机溶剂并使粘结剂进一步交联固化来提供一定力学强度；最后将其于电炉中进行热处理得到用于VOCs吸附与降解的3D打印二氧化硅气凝胶。3D打印二氧化硅气凝胶对以甲醛、甲苯为代表的VOCs吸附性能高于市售活性炭20％以上，吸收率可达100％，降解率可达25％以上。
Method for preparing porous block aerogel for adsorbing and degrading VOCs gas through 3D printing technology
一种3D打印技术制备多孔块体气凝胶用于吸附与降解VOCs气体的方法
JI HUIMING (author) / ZHAO WENPU (author) / LIU QIAN (author) / SHEN ZHURUI (author)
2022-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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