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Preparation method and application of magnesium aluminum hydrotalcite flame retardant modified jute fabric with different anion intercalation

A technology of magnesium-aluminum hydrotalcite and anion intercalation, which is used in flame-retardant fibers, plant fibers, textiles and paper making, etc., can solve the problems of large smoke generation, easy dripping, toxicity, etc., and achieves excellent flame retardant performance. , Improve the flame retardant effect, the effect of excellent flame retardant performance

Active Publication Date: 2022-06-24
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, organophosphorus flame retardants are commonly used in the market to modify them, but most of these flame retardants are liquid at room temperature, easy to drip at high temperature, and have a large amount of smoke and toxicity, so their application is limited

Method used

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  • Preparation method and application of magnesium aluminum hydrotalcite flame retardant modified jute fabric with different anion intercalation
  • Preparation method and application of magnesium aluminum hydrotalcite flame retardant modified jute fabric with different anion intercalation
  • Preparation method and application of magnesium aluminum hydrotalcite flame retardant modified jute fabric with different anion intercalation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method of reconstituting CO by roasting in this embodiment 3 2- The method for intercalating magnesium-aluminum LDH flame retardant modified jute fabric is specifically carried out according to the following steps:

[0036] (1) Preparation of Cl by co-precipitation method - Intercalated MgAl LDH: According to Mg 2+ : Al 3+ The molar ratio is 3:1, the total ion concentration is 0.5mol / L, and 700mL MgCl is prepared 2 , AlCl 3 mixed solution, and then prepare 200 mL of 6 mol / L NaOH solution. The NaOH solution was slowly added dropwise to the mixed solution until the pH was changed to 9.5, and the LDH colloid was finally obtained. After standing and aging for 2 hours, the solution was filtered, and the filtrate was placed in an oven at 110° C., and the LDH block solid was obtained after complete drying. Grind it into powder and use it.

[0037] (2) Preparation of layered double metal oxide (LDO) by calcination method: LDH ground into powder is put into a muffle fu...

Embodiment 2

[0045] A method of reconstituting CO by roasting in this embodiment 3 2- The method for intercalating magnesium-aluminum LDH flame retardant modified jute fabric is specifically carried out according to the following steps:

[0046] (1) Preparation of Cl by co-precipitation method - Intercalated MgAl LDH: According to Mg 2+ : Al 3+ The molar ratio is 3:1, the total ion concentration is 0.5mol / L, and 700mL MgCl is prepared 2 , AlCl 3 mixed solution, and then prepare 200 mL of 6 mol / L NaOH solution. The NaOH solution was slowly added dropwise to the mixed solution until the pH was changed to 9.5, and the LDH colloid was finally obtained. After standing and aging for 2 hours, the solution was filtered, and the filtrate was placed in an oven at 110° C., and the LDH block solid was obtained after complete drying. Grind it into powder and use it.

[0047] (2) Preparation of layered double metal oxide (LDO) by calcination method: LDH ground into powder is put into a muffle fu...

Embodiment 3

[0052] A method of reconstituting CO by roasting in this embodiment 3 2- The method for intercalating magnesium-aluminum LDH flame retardant modified jute fabric is specifically carried out according to the following steps:

[0053] (1) Preparation of Cl by co-precipitation method - Intercalated MgAl LDH: According to Mg 2+ : Al 3+ The molar ratio is 3:1, the total ion concentration is 0.5mol / L, and 700mL MgCl is prepared 2 , AlCl 3 mixed solution, and then prepare 200 mL of 6 mol / L NaOH solution. The NaOH solution was slowly added dropwise to the mixed solution until the pH was changed to 9.5, and the LDH colloid was finally obtained. After standing and aging for 2 hours, the solution was filtered, and the filtrate was placed in an oven at 110° C., and the LDH block solid was obtained after complete drying. Grind it into powder and use it.

[0054] (2) Preparation of layered double metal oxide (LDO) by calcination method: LDH ground into powder is put into a muffle fu...

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Abstract

The invention belongs to the technical field of textile post-finishing, in particular to a preparation method and application of magnesium-aluminum hydrotalcite flame-retardant modified jute fabrics intercalated with different anions. Comprised of the steps of: preparing Cl by co-precipitation ‑ The intercalated layered magnesium aluminum hydroxide (LDH) was fired into layered double metal oxide (LDO). At the same time, the jute fabric was washed and soaked in solutions containing different anions, and then the LDO was cast into Adding the above-mentioned anion solution, utilizing the structural memory effect, separating and drying after stirring and reacting to obtain the magnesium aluminum hydrotalcite-loaded modified jute fabric intercalated with different anions. The preparation method of the invention is relatively simple, the obtained composite sample has good interfacial bonding and excellent flame retardancy.

Description

technical field [0001] The invention belongs to the technical field of textile finishing, in particular to a preparation method and application of magnesium-aluminum hydrotalcite flame-retardant modified jute fabrics with different anion intercalation layers. Background technique [0002] Layered double metal hydroxides (LDHs for short) are a class of anionic layered materials that can be synthesized according to specific functional requirements. Its structure is similar to brucite, generally composed of MO 6 The octahedrons share edges with each other to form the main layer, and anions are mainly distributed between the layers to balance the overall charge. Metal ions are uniformly distributed on the laminate in a certain way, and the main laminate is associated with the layers through hydrogen bonds, electrostatic interactions or coordination bonds. LDHs have the following properties: (1) the anions between the layers can be exchanged; (2) the composition and structure c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/76D06M11/55D06M11/71D06M13/262D06M11/45D06M11/44D06M101/06
CPCD06M11/76D06M11/55D06M11/71D06M13/262D06M11/45D06M11/44D06M2101/06D06M2200/30
Inventor 岳献阳聂华琼王艳芝喻红芹黄鑫王少博于保康
Owner ZHONGYUAN ENGINEERING COLLEGE
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