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Preparation method of bionic cement-epoxy resin composite material
The invention discloses a preparation method of a bionic cement-epoxy resin composite material, which comprises the following steps: preparing initial cement paste, directionally freezing the initial cement paste by using an ice template method, then carrying out low-temperature unfreezing, and carrying out in-situ hydration in the ice layer melting process to obtain a bionic cement green body with directional pores and a layered structure; curing after demoulding, then dipping in an alcohol solution to stop hydration, and then drying; and immersing the dried cement blank into a high-permeability epoxy resin solution, and fully filling interlayer pores of the cement blank with the epoxy resin solution by adopting a vacuum negative pressure filling method to obtain the cured bionic cement-epoxy resin composite material. The bending strength of the composite material prepared by the method is increased by about 19.9 MPa by about 197%, the bending toughness is increased by about 464%, and the compressive strength is increased by about 82%.
本发明公开了一种仿生水泥‑环氧树脂复合材料的制备方法，包括以下步骤：制备初始水泥浆体，利用冰模板法定向冷冻初始水泥浆体，随后进行低温解冻，冰层融化过程中进行原位水化，获得定向孔隙及层状结构的仿生水泥坯体，脱模后进行养护，然后浸渍在醇溶液中终止水化，接着烘干；将烘干后的水泥坯体浸入高渗性环氧树脂溶液中，采用真空负压填充法使环氧树脂溶液充分填充进水泥坯体的层间孔隙中，得到固化的仿生水泥‑环氧树脂复合材料。本方法制备的复合材料抗弯强度将近19.9MPa提升近197％，弯曲韧性提升近464％，抗压强度提升近82％。
Preparation method of bionic cement-epoxy resin composite material
The invention discloses a preparation method of a bionic cement-epoxy resin composite material, which comprises the following steps: preparing initial cement paste, directionally freezing the initial cement paste by using an ice template method, then carrying out low-temperature unfreezing, and carrying out in-situ hydration in the ice layer melting process to obtain a bionic cement green body with directional pores and a layered structure; curing after demoulding, then dipping in an alcohol solution to stop hydration, and then drying; and immersing the dried cement blank into a high-permeability epoxy resin solution, and fully filling interlayer pores of the cement blank with the epoxy resin solution by adopting a vacuum negative pressure filling method to obtain the cured bionic cement-epoxy resin composite material. The bending strength of the composite material prepared by the method is increased by about 19.9 MPa by about 197%, the bending toughness is increased by about 464%, and the compressive strength is increased by about 82%.
本发明公开了一种仿生水泥‑环氧树脂复合材料的制备方法，包括以下步骤：制备初始水泥浆体，利用冰模板法定向冷冻初始水泥浆体，随后进行低温解冻，冰层融化过程中进行原位水化，获得定向孔隙及层状结构的仿生水泥坯体，脱模后进行养护，然后浸渍在醇溶液中终止水化，接着烘干；将烘干后的水泥坯体浸入高渗性环氧树脂溶液中，采用真空负压填充法使环氧树脂溶液充分填充进水泥坯体的层间孔隙中，得到固化的仿生水泥‑环氧树脂复合材料。本方法制备的复合材料抗弯强度将近19.9MPa提升近197％，弯曲韧性提升近464％，抗压强度提升近82％。
Preparation method of bionic cement-epoxy resin composite material
一种仿生水泥-环氧树脂复合材料的制备方法
ZHOU YANG (author) / CHEN SHENGJUN (author) / ZHENG-YANG ZEZHI (author) / CHEN WENTAO (author) / WU XIANGYAN (author) / LI WEIHUAN (author) / XIAO SHUAI (author) / XIONG CHENCHEN (author) / LIN WEI (author) / XING JIARUI (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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