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Method for preparing porous gel hose

The technology of gel and hose is applied in the field of preparation of porous gel hose, which can solve the problems of complicated process and poor size adjustability, and achieve the effect of simple preparation process and low cost.

Inactive Publication Date: 2007-01-31
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods all have the disadvantages of complicated process and poor size adjustability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve 5 g of acrylamide in 100 mL of distilled water, and pass through N for 10 min 2 Remove oxygen in water, add 0.15g N,N-methylenebisacrylamide, stir until completely dissolved, then add 0.12g tetramethylethylenediamine and 0.04g ammonium persulfate, stir well and add 20g powder Light calcium carbonate, stirred for 2 minutes to make it into a suspension, and reacted for 90 minutes under sealed conditions to form a milky white opaque gel.

[0024] Take out the gel and soak it in 0.1M HCl solution for 10 hours, the calcium carbonate dissolves and separates out to form a porous structure; since the dissolution of calcium carbonate is a process from the surface to the inside, control the time to obtain a complex with a porous surface and a dense core It was put into distilled water and soaked for 2 hours. After its surface swelled, it was put into 6M HCl solution and soaked. The pore-forming agent produced a large amount of gas during the dissolution process. The cha...

Embodiment 2

[0026] Dissolve 5 g of acrylamide in 100 mL of distilled water, and pass through N for 10 min 2 Remove oxygen in water, add 0.20g N, N-methylenebisacrylamide, stir until completely dissolved, then add 0.16g tetramethylethylenediamine and 0.05g ammonium persulfate, stir well, then add 10g powder Light calcium carbonate, stirred for 2 minutes to make it into a suspension, and reacted for 90 minutes under sealed conditions to form a milky white opaque gel.

[0027] Take out the gel and soak it in 0.05M HCl solution for 12 hours, the calcium carbonate will be dissolved and separated to form a porous structure, and a complex with a porous surface and a dense core layer will be obtained; soak it in distilled water for 2 hours, and wait for its surface to swell Finally, soak it in 2M HCl solution. The pore-forming agent will generate a large amount of gas during the dissolution process, which can cause the interface between the inner and outer layers of the gel to be damaged and auto...

Embodiment 3

[0029] Dissolve 5 g of acrylamide in 100 mL of distilled water, and pass through N for 10 min 2 Remove oxygen in water, add 0.15g N,N-methylenebisacrylamide, stir until completely dissolved, then add 0.12g tetramethylethylenediamine and 0.04g ammonium persulfate, stir well and add 20g powder Light calcium carbonate, stirred for 2 minutes to make it into a suspension, and reacted for 90 minutes under sealed conditions to form a milky white opaque gel.

[0030] Remove the gel into 0.05M H 2 SO 4Soak in the solution for 8 hours, the calcium carbonate dissolves and separates out to form a porous structure, and a complex with a porous surface and a dense core layer can be obtained; it is put into distilled water and soaked for 2 hours, and after its surface is swollen, it is put into 4M H 2 SO 4 Soaking in the solution, the pore forming agent produces a large amount of gas during the dissolution process. At this time, due to the soft and high elasticity of the porous gel on the ...

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Abstract

This is a method of producing lacunaris gelatin tube. Its characteristic is to mix and churn up the gel, the solvent of voidance, the solicitation system, the contacting contact and water, and a chemic reaction take place under room temperature, forming a complex material of gelatin which was based with a close-grained of the solvent of voidance. Then put the case-hardened gel in the low concentration acidic solution, make it lacunaris exterior and compact inside. take the pattern out and dip in the water, make the exterior gel expand and extend more, and then come into being a soft and stretch substance. In the end, take the gel out and put it in high concentration acidic solution, using the gas of the chemic reaction between the solvent of voidance and the acidic solution to break the interface of the surface layer and the inner layer, so make then detached and form a lacunaris gelatin tube. This first bring forward and adopt two-step method to produce gelatin tube. Its technology is simple, the diameter and the thickness of the tube can be controlled by the time and the degree of the reaction. So its cost is low, the surface and inner can be separated automatically.

Description

technical field [0001] The invention relates to a method for preparing a porous gel hose, which belongs to the technical field of functional polymer materials and device preparation. Background technique [0002] Smart gels have the intelligent characteristics of responding to environmental changes and producing reversible expansion / contraction, and have extremely broad application prospects in the fields of fluid control, intelligent machinery, drug release, and artificial muscles. According to different applications, gels are usually powdery, fibrous or bulk materials, and there are no related research reports on special-shaped gel devices. [0003] There are many existing porous gel preparation technologies, such as the "Preparation Method of a Polymer Ordered Porous Gel" provided by Chinese Invention Patent Application No. 01100390.1, including: preparing a silica monodisperse particle dispersion system; adding 0.01% -5% (weight) initiator, 1-30% (weight) crosslinking a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D23/00C08J9/00B29K77/00B29K33/00B29K29/00
Inventor 曾尤刘鹏飞
Owner SHENYANG JIANZHU UNIVERSITY