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3D printing thermal insulation concrete containing SiO2 aerogel and preparation method of 3D printing thermal insulation concrete
The invention discloses 3D printing thermal insulation concrete containing SiO2 aerogel and a preparation method of the 3D printing thermal insulation concrete. The concrete comprises the following components: cement, silica fume, quartz sand, river sand, SiO2 aerogel, a water reducing agent, water and a hydrophilic surfactant. The hydrophobic aerogel is modified by using the hydrophilic surfactant to reduce the hydrophobicity of the aerogel, and the mixing amount of the hydrophobic aerogel in cement mortar is increased on the premise of not changing the properties of the aerogel; and meanwhile, the flowability of the concrete is ensured, so that the heat conductivity coefficient of the concrete is reduced, and the thermal insulation effect of the concrete is improved.
本发明公开了一种含SiO2气凝胶的3D打印保温混凝土及其制备方法。该混凝土包括如下组分：水泥、硅灰、石英砂、河沙、SiO2气凝胶、减水剂、水和亲水性表面活性剂。本发明利用亲水性表面活性剂对疏水性气凝胶进行改性来降低气凝胶的疏水性，在不改变气凝胶属性的前提下，提高疏水性气凝胶在水泥砂浆中掺量，同时保证混凝土的流动性，从而降低混凝土导热系数，提高混凝土保温效果。
3D printing thermal insulation concrete containing SiO2 aerogel and preparation method of 3D printing thermal insulation concrete
The invention discloses 3D printing thermal insulation concrete containing SiO2 aerogel and a preparation method of the 3D printing thermal insulation concrete. The concrete comprises the following components: cement, silica fume, quartz sand, river sand, SiO2 aerogel, a water reducing agent, water and a hydrophilic surfactant. The hydrophobic aerogel is modified by using the hydrophilic surfactant to reduce the hydrophobicity of the aerogel, and the mixing amount of the hydrophobic aerogel in cement mortar is increased on the premise of not changing the properties of the aerogel; and meanwhile, the flowability of the concrete is ensured, so that the heat conductivity coefficient of the concrete is reduced, and the thermal insulation effect of the concrete is improved.
本发明公开了一种含SiO2气凝胶的3D打印保温混凝土及其制备方法。该混凝土包括如下组分：水泥、硅灰、石英砂、河沙、SiO2气凝胶、减水剂、水和亲水性表面活性剂。本发明利用亲水性表面活性剂对疏水性气凝胶进行改性来降低气凝胶的疏水性，在不改变气凝胶属性的前提下，提高疏水性气凝胶在水泥砂浆中掺量，同时保证混凝土的流动性，从而降低混凝土导热系数，提高混凝土保温效果。
3D printing thermal insulation concrete containing SiO2 aerogel and preparation method of 3D printing thermal insulation concrete
一种含SiO2气凝胶的3D打印保温混凝土及其制备方法
MA GUOWEI (author) / XIE PANPAN (author) / WANG LI (author) / PAN ZHU (author)
2021-09-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
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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