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A kind of aluminosilicate nanotube, flame-retardant composite material and preparation method thereof

A composite material, aluminosilicate technology, applied in the field of flame retardant materials, can solve the problems of immature synthesis technology, reduced mechanical properties of PVC, long intercalation period, etc., achieve good synergistic flame retardant effect, and eliminate the decline of mechanical properties. , the effect of reducing the risk of fire

Active Publication Date: 2021-12-07
超精(苏州)航空精密机械制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminosilicate nanotubes mainly include halloysite nanotubes (HNTs) and imogolite nanotubes (INTs), which are an important class of oxide nanomaterials. The existing preparation methods include hydrothermal synthesis, intercalation At present, the synthesis technology of HNTs at home and abroad is not mature enough, and is in the primary stage of continuous exploration, and it will take a long time to realize the road of industrial production
Nowadays, the intercalation method is the main method for preparing HNTs. The main problems in the process are: the process of preparing HNTs is relatively complicated and too lengthy; the intercalation cycle is too long and needs to be repeated for about 7-10 days; the synthesized HNTs low yield
[0004] Antimony trioxide (Sb 2 o 3 ) can effectively improve the oxygen index of PVC and has good flame retardant properties. It is a traditional inorganic flame retardant used in PVC, but Sb 2 o 3 Adding will increase the amount of smoke, and it is necessary to add other additives for smoke suppression modification, such as ammonium octamolybdate, zinc oxide, zinc stannate and other additives, and Sb 2 o 3 Due to the increase in market demand, the price continues to rise, and Sb 2 o 3 The addition of PVC will reduce the mechanical properties of PVC to a certain extent

Method used

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  • A kind of aluminosilicate nanotube, flame-retardant composite material and preparation method thereof
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  • A kind of aluminosilicate nanotube, flame-retardant composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of aluminosilicate nanotube, adopts following steps to prepare:

[0026] 1) Add 1000ml of Al(NO 3 ) 3· 9H 2 The aqueous solution of O is added in the tetraethyl orthosilicate solution of 280ul, Al(NO 3 ) 3· 9H 2 The concentration of the aqueous solution of O is 0.005mol / L, stirring for 60min to obtain solution A;

[0027] 2) Slowly add sodium hydroxide solution to solution A to adjust the pH to 4.5, then stir for 30 minutes, then heat in an oil bath at 95°C for 5 days, and cool to room temperature to obtain solution B;

[0028] 3) Adjust the pH value of solution B to 8 with ammonia water, centrifuge, and dry in vacuum to obtain HNTs.

Embodiment 2

[0030] A kind of aluminosilicate nanotube, adopts following steps to prepare:

[0031] 1) Add 900ml of Al(NO 3 ) 3· 9H 2 O aqueous solution was added to 200ul tetraethyl orthosilicate solution, Al(NO 3 ) 3· 9H 2 The concentration of the aqueous solution of O is 0.004mol / L, stirring for 40min to obtain solution A;

[0032] 2) Slowly add sodium hydroxide solution to solution A to adjust the pH to 4, then stir for 20 minutes, then heat in an oil bath at 80°C for 5 days, and cool to room temperature to obtain solution B; HNTs have good morphology when heated for 5 days , has better uniformity, and with the increase of heating time, the agglomeration of HNTs will increase, and more single nanotubes will gather and interweave together, transforming to an amorphous structure.

[0033] 3) Adjust the pH value of solution B to 7.5 with ammonia water, centrifuge, and dry in vacuum to obtain HNTs.

Embodiment 3

[0035] A kind of aluminosilicate nanotube, adopts following steps to prepare:

[0036] 1) Add 1500ml of Al(NO 3 ) 3· 9H 2The aqueous solution of O is added in the tetraethyl orthosilicate solution of 350ul, Al(NO 3 ) 3· 9H 2 The concentration of the aqueous solution of O is 0.006mol / L, stirring for 80min to obtain solution A;

[0037] 2) Slowly add sodium hydroxide solution to solution A to adjust the pH to 5, then stir for 40 minutes, then heat at 100°C in an oil bath for 7 days, and cool to room temperature to obtain solution B;

[0038] 3) The pH value of solution B was adjusted to 8.5 with ammonia water, centrifuged, and vacuum-dried to obtain HNTs.

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Abstract

The present invention proposes a kind of aluminosilicate nanotube, flame-retardant composite material and preparation method thereof, aluminosilicate nanotube adopts Al(NO 3 ) 3· 9H 2 O and tetraethyl orthosilicate preparation, flame-retardant composite material, is made up of the raw material of following weight part: PVC resin 100 parts, dioctyl phthalate 35-45 parts, stabilizer 3-6 parts, lubricant 0.4 ‑0.6 part and 5 parts of flame retardant, the flame retardant includes 0.1‑0.4 part of the described aluminosilicate nanotube and 4.6‑4.9 part of Sb 2 o 3 . The invention simplifies the preparation process of the aluminosilicate nanotube, shortens the production cycle, optimizes the preparation process, and the flame-retardant composite material has good flame-retardant and smoke-suppressing effects and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of flame-retardant materials, in particular to an aluminosilicate nanotube, a flame-retardant composite material and a preparation method thereof. Background technique [0002] Aluminosilicate nanotubes mainly include halloysite nanotubes (HNTs) and imogolite nanotubes (INTs), which are an important class of oxide nanomaterials. The existing preparation methods include hydrothermal synthesis, intercalation At present, the synthesis technology of HNTs at home and abroad is not mature enough, and is in the primary stage of continuous exploration, and it will take a long time to realize the road of industrial production. Nowadays, the intercalation method is the main method for preparing HNTs. The main problems in the process are: the process of preparing HNTs is relatively complicated and too lengthy; the intercalation cycle is too long and needs to be repeated for about 7-10 days; the synthesized HNTs Low yi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/26C08L27/06C08K13/04C08K7/26C08K3/22B82Y40/00
CPCB82Y40/00C01B33/26C01P2004/13C08K3/2279C08K7/26C08K13/04C08K2201/011C08L2201/02C08L27/06
Inventor 高明李永鹏仪德启
Owner 超精(苏州)航空精密机械制造有限公司
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