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A kind of polyamide nano barrier material and preparation method thereof

A barrier material, polyamide technology, which is applied in the field of polyamide nano-barrier material and its preparation, can solve the problems of low barrier performance improvement and poor strength, and achieve the effect of wide application prospect and high barrier property

Active Publication Date: 2016-08-03
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of the above two composite materials are: the strength is poor, and the range of barrier performance improvement is still not very large

Method used

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  • A kind of polyamide nano barrier material and preparation method thereof
  • A kind of polyamide nano barrier material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (a) Caprolactam dissolves polyamide 66:

[0040] Under nitrogen protection, 845 parts by weight of caprolactam was heated to 160° C., and 100 parts by weight of polyamide 66 was added to the molten caprolactam and stirred for 120 minutes.

[0041] (b) Disperse 50 parts by weight of alumina in 50 times water, and stir at 80°C for 120 minutes.

[0042] (c) Add the mixture of alumina and water in step (b) to the mixture of caprolactam and polyamide 66, stir at 90°C for 40 minutes under the protection of inert gas; turn on the vacuum pump, and evacuate at 150°C for 20 minutes.

[0043] (d) 2 parts by weight of sodium hydroxide and 3 parts by weight of toluene diisocyanate were added to the mixture obtained in the above step (c), mixed quickly and uniformly, poured into a mold for casting; the casting temperature was 160 ° C, and the reaction was performed for 15 minutes. The obtained polyamide nano-barrier material was tested for performance, and the specific performance t...

Embodiment 2

[0045] (a) Caprolactam dissolves polyamide 66:

[0046] Under the protection of carbon dioxide gas, 947 parts by weight of caprolactam was heated to 140° C., and 50 parts by weight of polyamide 66 was added to the molten caprolactam, and stirred for 60 minutes.

[0047] (b) Disperse 1 part by weight of silica in 50 times water, and stir at 80°C for 60 minutes.

[0048] (c) Add the mixture of silica and water in step (b) to the mixture of caprolactam and polyamide 66, under the protection of inert gas, stir at 80 °C for 30 minutes; turn on the vacuum pump, and vacuumize for 10 minutes at 140 °C .

[0049] (d) Add 1 part by weight of sodium cyanide and 1 part by weight of toluene diisocyanate to the mixture obtained in the above step (c), mix quickly and uniformly, pour it into a mold for casting; the casting temperature is 180 ° C, and the reaction is performed for 5 minutes. The obtained polyamide nano-barrier material was tested for performance, and the specific performance...

Embodiment 3

[0051] (a) Caprolactam dissolves polyamide 66:

[0052] Under the protection of carbon dioxide gas, 770 parts by weight of caprolactam was heated to 180° C., and then 150 parts by weight of polyamide 66 was added to the molten caprolactam, and stirred for 180 minutes.

[0053] (b) 100 parts by weight of titanium oxide was dispersed in 50 times water, and stirred at 80°C for 120 minutes.

[0054](c) The mixture of titanium oxide and water in step (b) was added to the mixture of caprolactam and polyamide 66, and under the protection of carbon dioxide gas, stirred at 100 ° C for 60 minutes; turned on the vacuum pump, and evacuated at 160 ° C for 30 minutes.

[0055] (d) 10 parts by weight of sodium caprolactam, 10 parts by weight of triphenylmethane triisocyanate, 2 parts by weight of antioxidant 1010, 3 parts by weight of antioxidant 168, and 5 parts by weight of light stabilizer 442 are added to above-mentioned step (c) The obtained mixture was quickly mixed uniformly, poured ...

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Abstract

The invention discloses polyamide nanometer barrier material. The polyamide nanometer barrier material is made from, by weight part ratio, 770-947 parts of caprolactam, 1-10 parts of catalyst, 1-10 parts of activator, 6650-150 parts of polyamide, 1-100 parts of inorganic nanometer oxide and 0-10 parts of other additives. The invention further discloses a preparation method of the polyamide nanometer barrier material. The polyamide nanometer barrier material has the advantages of being high in barrier property, strength, toughness and the like, and has wide application prospect in the fields of automobile fuel tanks, high barrier plastic bottles, battery separators, oil pipelines, packaging materials and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyamide nanometer barrier material and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon, is an engineering plastic with excellent performance. It has good wear resistance, plasticity and mechanical properties. It is widely used in construction, machinery, automobiles, electronics, home appliances and other fields. Polyamides contain strong polar amide groups, which have good gas barrier properties and are widely used in barrier materials. However, polyamide materials have poor barrier properties to polar small molecules such as water molecules, so researchers at home and abroad have carried out various chemical and physical modifications to polyamides to improve their barrier properties. [0003] Among them, due to the excellent comprehensive properties of nylon nanocomposites, high barrier properties, and easy implemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L77/02C08G69/16
Inventor 李万里
Owner HEFEI GENIUS NEW MATERIALS