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Nylon 6/inorganic particle nano composite material direct preparation method

A technology of nanocomposite materials and inorganic particles, which is applied in the field of direct preparation of nylon 6/inorganic particle nanocomposites, which can solve the problems of complex production process, uneven dispersion, and easy agglomeration of inorganic nanoparticles, and achieve white appearance and excellent mechanical properties. Effect

Inactive Publication Date: 2003-06-11
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the research on the nanocomposite material of nylon 6 / inorganic particles has achieved a lot of results, and some composite materials have been industrialized. Various methods of preparing nanocomposites have deficiencies to varying degrees. For example, the nylon 6 / montmorillonite nanocomposites produced by intercalation polymerization that have been industrially produced also have some problems such as product discoloration and complicated production processes. Insufficient, the blending method also has disadvantages such as easy aggregation of inorganic nanoparticles, uneven dispersion, wide particle size distribution, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Nylon 6 / SiO 2 A Direct Preparation Method of Nanocomposites

[0013] Add 11.3ml tetraethyl orthosilicate to a 500ml three-neck flask, then add 3.6ml water and 5ml acetone, add 1 drop of 1M hydrochloric acid to adjust its acidity under stirring, hydrolyze at room temperature to obtain a transparent solution, then add 400g Caprolactam melts at a temperature of 70-80°C. After the caprolactam is completely melted, stir vigorously to mix the two evenly. At the same time, the pressure is reduced to extract the ethanol generated by hydrolysis and the added acetone. The resulting solution was then gelled at about 100° C. under the protection of high-purity nitrogen for 6 hours until the original uniform and transparent solution became a solidified transparent gel. Add 6 grams of 6-aminon-hexanoic acid to the gel prepared by the direct preparation method, under the protection of high-purity nitrogen, the gel was polymerized at 250-260°C for 15 hours at normal pr...

Embodiment 2

[0015] Nylon 6 / SiO 2 A Direct Preparation Method of Nanocomposites

[0016] Add 22.6ml tetraethyl orthosilicate to a 500ml three-neck flask, then add 7.2ml water and 10ml acetone, add 2 drops of 1M hydrochloric acid to adjust its acidity under stirring, hydrolyze at room temperature to obtain a transparent solution, then add 400g Caprolactam melts at a temperature of 70-80°C. After the caprolactam is completely melted, stir vigorously to mix the two evenly, and at the same time reduce pressure to extract the ethanol generated by hydrolysis and the added acetone. The resulting solution was then gelled at about 100° C. under the protection of high-purity nitrogen for 6 hours until the original uniform and transparent solution became a solidified transparent gel. Add 6 grams of 6-aminon-hexanoic acid to the gel prepared by the direct preparation method, under the protection of high-purity nitrogen, the gel was polymerized at 250-260°C for 15 hours at normal press...

Embodiment 3

[0018] Nylon 6 / SiO 2 A Direct Preparation Method of Nanocomposites

[0019] Add 56.5ml of methyl orthosilicate to a 500ml three-necked flask, then add 18ml of water and 20ml of acetone, add 5 drops of 1M hydrochloric acid to adjust its acidity under stirring, hydrolyze at room temperature to obtain a transparent solution, and then add 400 grams of caprolactam Melt at a temperature of 70-80°C. After the caprolactam is completely melted, stir vigorously to mix the two evenly. At the same time, reduce pressure to extract the methanol generated by hydrolysis and the added acetone. The resulting solution was then gelled at about 100° C. under the protection of high-purity nitrogen for 6 hours until the original uniform and transparent solution became a solidified transparent gel. Add 6 grams of 6-aminon-hexanoic acid to the gel prepared by the direct preparation method, under the protection of high-purity nitrogen, the gel was polymerized at 250-260°C for 15 hours a...

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Abstract

The invention discloses a nylon 6 / inorganic particle nano composite material and the direct preparing method. It makes the hydrolyzation on inorganic acid ester or inorganic acid salt to obtain the even solution, adds the solution in melting hexyl end-amide to mix to make the even solution, makes gelation under the high-purity nitrogen protection at 20-200 C degree for 0.5-720 hour, makes polymerization on the gelatin under the high-purity introgen protection to obtain the composite material, and then makes purification to obtain the invention. It is produced at the original position; the nano particles and the nylon 6 are produced synchronously.

Description

technical field [0001] The content of the present invention relates to a direct preparation method of nylon 6 / inorganic particle nanocomposite material, in particular to a direct preparation method of a nanocomposite material made of caprolactam and inorganic acid ester or hydrolyzate of inorganic acid salt as raw materials. Background technique [0002] At present, the research on nanocomposites of nylon 6 / inorganic particles has achieved many results, and some composite materials have been industrialized, but at present, more classic methods such as solution gel method, intercalation polymerization method, blending method, etc. Various methods of preparing nanocomposites have deficiencies to varying degrees. For example, the nylon 6 / montmorillonite nanocomposites produced by intercalation polymerization that have been industrially produced also have some problems such as product discoloration and complicated production processes. Insufficient, the blending method also has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/16C08K3/34C08L77/02
CPCC08J5/005C08J2377/02
Inventor 张平王霞瑜魏珊珊姜勇
Owner XIANGTAN UNIV
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