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Preparation method and application of hydraulic organic-inorganic composite material

An inorganic composite material, hydraulic technology, applied in the field of functional composite material preparation, can solve the problems of damage, large application limitations, low toughness and plasticity, etc.

Active Publication Date: 2021-12-24
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cellulose-reinforced cement products are more susceptible to water damage than asbestos cement products
Moreover, the preparation methods of cellulose and cement composite materials used in the prior art are mostly the conventional water blend solidification method, which has low toughness and plasticity and large application limitations.

Method used

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  • Preparation method and application of hydraulic organic-inorganic composite material

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preparation example Construction

[0029] A kind of preparation method of hydraulic organic-inorganic composite material provided by the present invention, comprises the following steps at least:

[0030] (i), dissolving the organic polymer in the non-aqueous good solvent of the organic polymer to obtain an organic polymer solution; the organic polymer is preferably a hydrophilic natural organic polymer, such as a polysaccharide organic polymer Molecular or polypeptide organic polymers;

[0031] (ii), dispersing the inorganic particles in the organic polymer solution obtained in (i) to obtain a blend solution; the inorganic particles are preferably water-hardening inorganic particles;

[0032] (iii), coagulating and regenerating the blended solution obtained in (ii) in a non-aqueous coagulation bath to obtain a gel; the non-aqueous coagulation bath is a volatile coagulation bath other than water;

[0033] (iv), drying the gel obtained in (iii) to obtain a hydraulic organic-inorganic composite material.

[003...

Embodiment 1

[0044] Dissolving cellulose in LiCl / DMAc solvent to prepare a cellulose solution, dispersing cement particles in the above cellulose solution to obtain a blended solution, after defoaming, the blended solution is cast into a film and regenerated in ethanol A film-like cellulose-cement blended gel is obtained, and the blended gel is dried in an oven to obtain a cellulose-cement blended membrane material. The membrane material has a certain degree of toughness, and after being soaked in water for one day or placed in humid air for three days, its strength increases, but its toughness deteriorates, showing hydraulic hardness.

[0045] see figure 1 As shown, it can be seen that the dried cellulose-cement blend membrane material (b) can be self-supporting and has a certain strength and toughness; after soaking in water for 1 min (c), one end of the cellulose-cement blend membrane If the other end cannot support itself horizontally, it means that the material has softened. At this ...

Embodiment 2

[0047] Dissolving cellulose in LiCl / DMAc solvent to prepare cellulose solution, dispersing cement particles in the above cellulose solution to obtain a blend solution, after defoaming, extruding the blend solution into ethanol through a syringe to regenerate filamentous cellulose - cement blended gel, drying the filamentous gel in an oven to obtain a cellulose-cement blended silk material. The silk material has a certain toughness, can be bent, knotted, braided, soaked in water for 1 day or placed in humid air for 3 days, its strength increases, toughness deteriorates, and it shows water hardness.

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Abstract

The invention discloses a preparation method and application of a hydraulic organic-inorganic composite material. The preparation method of the composite material comprises the following steps: dissolving an organic polymer in a non-aqueous good solvent to prepare an organic polymer solution, dispersing inorganic particles in the organic polymer solution to obtain a blended solution, carrying out solidification regeneration on the blended solution in a non-aqueous coagulation bath to obtain gel, and drying the gel to obtain the hydraulic organic-inorganic composite material. The whole reaction is carried out in a non-aqueous system, and the obtained organic-inorganic composite material has the characteristics of softening when meeting water for a short time and hardening when meeting water for a long time, so that after being soaked in water for a short time for softening, the organic-inorganic composite material can be molded and finally cured and molded, the plasticity of the composite material is remarkably improved, and the application range of the composite material is widened.

Description

technical field [0001] The invention relates to a preparation method and application of a hydraulic organic-inorganic composite material, and belongs to the technical field of preparation of functional composite materials. Background technique [0002] With the requirements of sustainable development of industry and economy in modern society and the increasing shortage of fossil resources such as petroleum and coal, the demand for using naturally occurring polymers to produce new materials is becoming increasingly urgent. Natural polymers such as cellulose and chitin have the advantages of renewability, environmental friendliness, biocompatibility, and biodegradability. Scientists are paying more and more attention to expanding the application range of these natural polymers. [0003] Portland cement is the basic raw material for many buildings and structures, primary concrete and reinforced concrete, and is a typical high-strength inorganic material. Compared to plaster, w...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B24/383Y02W30/91
Inventor 朱坤坤徐卫林李亚男彭俊武刘星麟
Owner WUHAN TEXTILE UNIV