Preparation method and application of inorganic hybrid smoke-suppression flame retardant

A flame retardant and hybridization technology, which is applied in the preparation and application of inorganic hybrid smoke suppressing flame retardants, can solve the problems of large amount of inorganic flame retardants, poor comprehensive flame retardant effect, and difficult dispersion, and achieve the goal of retardant The effects of improved combustion efficiency, uniform dispersion, and excellent comprehensive flame retardancy

Inactive Publication Date: 2015-09-09
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of an inorganic hybrid smoke suppressing flame retardant, to develop a new inorganic flame retardant, to solve the common problem of existing inorganic flame retardants that the addition amount is relatively large and the comprehensive flame retardant effect is relatively low. Poor, difficult to disperse when added in the polymer matrix, etc.

Method used

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  • Preparation method and application of inorganic hybrid smoke-suppression flame retardant
  • Preparation method and application of inorganic hybrid smoke-suppression flame retardant
  • Preparation method and application of inorganic hybrid smoke-suppression flame retardant

Examples

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Effect test

Embodiment 1

[0038] Add distilled water to graphite oxide, ultrasonically disperse evenly, and obtain a graphene oxide suspension with a concentration of 0.5 mg / mL; measure 400 mL of graphene oxide suspension into an 800 mL beaker, add 0.3201 g of Na 2 SnO 3 ·3H 2 O, making Na in the solution 2 SnO 3 The concentration of ZnSO is 3 mmol / L, and stirred at room temperature for 20 minutes to form a uniform solution; then weigh 0.3451g of ZnSO 4 ·7H 2 O was added to the above solution, stirred at room temperature for 30 minutes, and the solution was placed in a 500mL polytetrafluoroethylene hydrothermal reaction kettle, reacted at 160°C for 8 hours, filtered under reduced pressure, washed twice with deionized water, and the precipitate was freeze-dried for 12 Hours, grind black powder inorganic hybrid smoke suppression flame retardant.

Embodiment 2

[0040] Add distilled water to graphite oxide, ultrasonically disperse evenly, and obtain a graphene oxide suspension with a concentration of 0.5 mg / mL; measure 400 mL of graphene oxide suspension into an 800 mL beaker, add 0.6402 g of Na 2 SnO 3 ·3H 2 O, making Na in the solution 2 SnO 3 The concentration is 6 mmol / L, stir at room temperature for 15 minutes to form a uniform solution; then weigh 0.6902g of ZnSO 4 ·7H 2 O was added to the above solution, stirred at room temperature for 30 minutes, and the solution was placed in a 500mL polytetrafluoroethylene hydrothermal reaction kettle, reacted at 160°C for 8 hours, filtered under reduced pressure, washed twice with deionized water, and the precipitate was freeze-dried for 12 Hours, grind black powder inorganic hybrid smoke suppression flame retardant.

[0041] Taking Example 2 as an example, the prepared powdery inorganic hybrid smoke-suppressing flame retardant is scanned and transmitted with an electron microscope, an...

Embodiment 3

[0043] Add distilled water to graphite oxide, ultrasonically disperse evenly, and obtain a graphene oxide suspension with a concentration of 0.5mg / mL; measure 400mL of graphene oxide suspension into an 800mL beaker, add 0.9603g of Na 2 SnO 3 ·3H 2 O, making Na in the solution 2 SnO3 The concentration of ZnSO is 9 mmol / L, and stirred at room temperature for 20 minutes to form a uniform solution; then weigh 1.0353g of ZnSO 4 Add 7H2O to the above solution, stir at room temperature for 30 minutes, put the solution in a 500mL polytetrafluoroethylene hydrothermal reaction kettle, react at 160°C for 8 hours, filter under reduced pressure, wash twice with deionized water, and freeze-dry the precipitate After 12 hours, grind to obtain a black powdery inorganic hybrid smoke suppressing and flame retardant.

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Abstract

The invention discloses a preparation method of an inorganic hybrid smoke-suppression flame retardant, which comprises the following steps: a) preparing a 0.4-0.6 mg / ml graphene oxide suspension; b) adding a soluble zinc salt into the graphene oxide suspension until the concentration of the soluble zinc salt is 2.5-9 mmol / L, stirring for 15-20 minutes, and adding a soluble stannate with the same mole number as the soluble zinc salt; stirring for 30-40 minutes to obtain a precursor solution; c) carrying out hydrothermal reaction on the precursor solution at 120-160 DEG C for 6-12 hours; and after the reaction finishes, cooling, filtering, washing with water and drying to obtain the inorganic hybrid smoke-suppression flame retardant. The invention also discloses application of the flame retardant in epoxy resins. The method is simple to operate, has the advantage of mild and controllable reaction conditions, and can easily implement large-scale production. The prepared flame retardant has favorable flame retardancy, overcomes the defects of low flame-retardant efficiency, high aggregation tendency, high addition amount and the like in the single graphene flame retardant. The flame-retardant material prepared by adding into the epoxy resin has flame-retardant and smoke-suppression functions.

Description

technical field [0001] The invention relates to the preparation and application of flame retardant materials, in particular to a preparation method and application of an organic-inorganic hybrid smoke suppressing flame retardant. Background technique [0002] Inorganic flame retardants are currently the most widely used flame retardants. They have the advantages of being green, non-toxic, long-lasting, non-volatile, wide in sources, and low in price. However, they also have low flame retardant efficiency, large additions, and compatibility with polymers Poor sex and other shortcomings. Therefore, research and development of inorganic flame retardants with high flame retardant efficiency, small addition amount, and easy compatibility with polymer matrix are current research hotspots and difficulties in the industry. [0003] Graphene is a new member of inorganic carbon materials discovered in recent years. Due to the existence of nano-effects, compared with traditional carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K3/04C08K3/24
Inventor 屈红强刘晓威齐艳侠唐华钰刘华一徐建中
Owner HEBEI UNIVERSITY
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