A preparation method of high-performance nylon porous material that can be prepared on a large scale

A technology for large-scale preparation of porous materials, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc. Simple and easy, large specific surface area, the effect of large specific surface area

Active Publication Date: 2020-11-27
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned porous materials still have more or less defects in actual production and application. For example, polystyrene foamed materials have poor heat resistance, and porous ceramics are brittle and not shock-resistant; cutting-edge porous materials such as airgel have complicated production processes. High production cost, difficult to form industrialization

Method used

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  • A preparation method of high-performance nylon porous material that can be prepared on a large scale
  • A preparation method of high-performance nylon porous material that can be prepared on a large scale
  • A preparation method of high-performance nylon porous material that can be prepared on a large scale

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of nylon porous material is characterized in that it is made of the raw material of following parts by weight (g): nylon 6 (PA6) 16, anhydrous formic acid 84, sodium bicarbonate 3, distilled water 97

[0031] A kind of preparation method of nylon porous material as claimed in claim 2, is characterized in that comprising the following steps:

[0032] (1) Nylon 6 and anhydrous formic acid were weighed and mixed according to a certain mass ratio, and stirred with a magnetic stirrer at room temperature for 3 hours until completely dissolved.

[0033] (3) A certain quality of sodium bicarbonate is mixed with water to form a solution with a mass concentration of 3%.

[0034] (4) Take 6ml of nylon / formic acid solution and put it into a mold with a capacity of 14ml, inject NaHCO 3 aqueous solution, producing a large amount of CO 2 A porous material is formed, and the porous material is taken out after the reaction is complete.

[0035] (5) After washing with water, pu...

Embodiment 2

[0038] A kind of nylon porous material is characterized in that it is made of the raw material of following parts by weight (g): nylon 6 (PA6) 16, anhydrous formic acid 84, sodium bicarbonate 4, distilled water 96

[0039] A kind of preparation method of nylon porous material as claimed in claim 2, is characterized in that comprising the following steps:

[0040] (1) Nylon 6 and anhydrous formic acid were weighed and mixed according to a certain mass ratio, and stirred with a magnetic stirrer at room temperature for 3.5 hours until completely dissolved.

[0041] (2) A certain quality of sodium bicarbonate is mixed with water to form a solution with a mass concentration of 4%.

[0042] (3) Take 7ml of nylon / formic acid solution and put it into a mold with a capacity of 14ml, inject NaHCO 3 aqueous solution, producing a large amount of CO 2 A porous material is formed, and the porous material is taken out after the reaction is complete.

[0043] (5) After washing with water, ...

Embodiment 3

[0046] A kind of nylon porous material is characterized in that it is made of the raw material of following parts by weight (g): nylon 66 (PA66) 16, anhydrous formic acid 84, sodium bicarbonate 4, distilled water 96

[0047] A kind of preparation method of nylon porous material as claimed in claim 1, is characterized in that comprising the following steps:

[0048] (1) Nylon 66 and anhydrous formic acid were weighed and mixed according to a certain mass ratio, and stirred with a magnetic stirrer at room temperature for 3 hours until completely dissolved.

[0049] (3) A certain quality of sodium bicarbonate is mixed with water to form a solution with a mass of sodium bicarbonate of 4%.

[0050] (4) Take 6ml of nylon / formic acid solution and put it into a mold with a capacity of 14ml, inject NaHCO 3 aqueous solution, producing a large amount of CO 2 A porous material is formed, and the porous material is taken out after the reaction is complete.

[0051] (5) After washing wit...

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Abstract

The invention provides a preparation method for preparing a nylon porous material on a large scale. The preparation method is characterized in that the selected raw material is nylon, the preparation process is simple and efficient, water in the production process can be repeatedly utilized, and the preparation method conforms to the environment-friendly concept. The nylon is dissolved by using anhydrous formic acid, and a sodium bicarbonate solution is added for foaming to obtain the porous material which is of a three-dimensional porous structure and has excellent performance. The prepared nylon porous material has the advantages of being low in density, high in porosity, low in heat conductivity, high in specific surface area and the like. Compared with aerogel and other porous materials, the preparation method for preparing the porous material is simple, and low-cost large-scale production can be achieved. The method can be used in heat preservation, heat insulation, marine petroleum pollution treatment, catalyst carriers, sound absorption and shock absorption buffer materials and other fields, and has wide application prospects.

Description

technical field [0001] The invention mainly relates to the field of porous material preparation, and is an environmentally friendly, high-efficiency, low-cost and low-cost nylon porous material preparation method that can be prepared on a large scale and can be used in the fields of sound absorption and shock absorption, heat insulation, chemical catalysis, physical adsorption and the like. Background technique [0002] Due to its low apparent density, high porosity, low thermal conductivity, and large specific surface area, porous materials are widely used in fields such as shock resistance, sound absorption, physical adsorption separation, heat insulation, slow drug release, chemical catalysis, and environmental protection. , and has received continuous attention from industry and scientific researchers. [0003] There are many types of porous materials commonly used in commercial applications. Among them, high polymer foaming materials based on polyurethane, polypropylen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08J9/08B01J20/26B01J20/30C02F1/28
CPCB01J20/262C02F1/285C08J9/08C08J2203/02C08J2377/02C08J2377/06C08L77/02C08L77/06C08L2201/08C08L2203/14Y02C20/40
Inventor 王亮艾芳芳刘雍
Owner TIANJIN POLYTECHNIC UNIV
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