Montmorillonite composite flame retardant and preparation method thereof

A technology of composite flame retardant and montmorillonite, which is applied in the field of flame retardants, can solve the problems of affecting the synergistic flame retardant effect and difficulty in uniform dispersion, and achieve the effects of reducing secondary hazards, wide application range, and improving dispersibility

Active Publication Date: 2015-12-23
郑叶芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system is only obtained through simple physical blending of the three. It is difficult to achieve uniform dispersion of montmorillonite and intumescent flame retardant in the polymer matrix, which seriously affects the synergistic flame retardant effect of the two during the combustion process of the material.

Method used

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  • Montmorillonite composite flame retardant and preparation method thereof
  • Montmorillonite composite flame retardant and preparation method thereof
  • Montmorillonite composite flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 6.4g of melamine in 508mL of hydrochloric acid with a concentration of 0.1mol / L, and stir for 1 hour to obtain melamine hydrochloride. Add 800mL of distilled water and 80g of montmorillonite in a 2L stainless steel reaction kettle, heat to 80°C and stir vigorously for 2 hours, add the above-mentioned melamine hydrochloride, stir vigorously at 80°C for 12 hours, filter the obtained product with 80°C distilled water Washing several times until the filtered water does not contain halide ions or nitrate ions, and vacuum-drying the obtained solid at 70° C. to constant weight to obtain melamine-modified montmorillonite.

[0028] Add 8.64g of melamine-modified montmorillonite to 300mL of toluene, ultrasonically disperse it for 30 minutes, then transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, and add 13.6g of it dropwise at room temperature The mixed solution of diphenoxyphosphoryl chlor...

Embodiment 2

[0030] Dissolve 0.96 g of melamine in 90 mL of hydrochloric acid with a concentration of 0.1 mol / L, and stir for 1 hour to obtain melamine hydrochloride. Add 800mL of distilled water and 97g of montmorillonite into a 2L stainless steel reaction kettle, heat to 80°C and stir vigorously for 2 hours, add the above-mentioned melamine hydrochloride, stir vigorously at 80°C for 12 hours, and filter the obtained product with 80°C distilled water Washing several times until the filtered water does not contain halide ions or nitrate ions, and vacuum-drying the obtained solid at 70° C. to constant weight to obtain melamine-modified montmorillonite.

[0031] Add 9.796g of melamine-modified montmorillonite to 300mL of toluene, ultrasonically disperse it for 30 minutes, then transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, and add 2.04g of it dropwise at room temperature The mixed solution of diphenoxyphosph...

Embodiment 3

[0033] Dissolve 9.6 g of melamine in 180 mL of hydrochloric acid with a concentration of 0.5 mol / L, and stir for 1 hour to obtain melamine hydrochloride. Add 800mL of distilled water and 70g of montmorillonite in a 2L stainless steel reaction kettle, heat to 80°C and stir vigorously for 2 hours, add the above-mentioned melamine hydrochloride, stir vigorously at 80°C for 12 hours, and filter the product obtained with 80°C distilled water Washing several times until the filtered water does not contain halide ions or nitrate ions, and vacuum-drying the obtained solid at 70° C. to constant weight to obtain melamine-modified montmorillonite.

[0034] Add 7.96g of melamine-modified montmorillonite to 200mL of toluene, ultrasonically disperse it for 30 minutes, then transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, and add 20.4g of it dropwise at room temperature The mixed solution of diphenoxyphosphory...

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PUM

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Abstract

The invention relates to a flame retardant and particularly relates to a montmorillonite composite flame retardant and a preparation method thereof. The montmorillonite composite flame retardant has a structure as shown in the specification (I), wherein a stripped substance represents for montmorillonite, and a compound inserted to a montmorillonite layer is an intumescent flame retardant with the mass content of 3-30%. The intumescent flame retardant of the montmorillonite composite flame retardant is bonded with montmorillonite through ionic bonds. The montmorillonite composite flame retardant is suitable for modifying high-polymer materials of which the processing temperatures are within 300 DEG C. The flame retardant disclosed by the invention is free of halogens, good in flame-retardant effect, wide in application range and capable of meeting the requirement of environment protection.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a montmorillonite composite flame retardant and a preparation method thereof. Background technique [0002] It is easily replaced by low-priced cations, and the surface layer is negatively charged, so the interlayer has good ion exchange performance and adsorption performance, and it is easy to adsorb some positively charged cations and polar molecules between the layers. The organic montmorillonite prepared by introducing organic matter into the interlayer has a large interlayer spacing and good expansion performance. At the same time, the interface polarity and chemical microenvironment of the inorganic matter are improved, so that the monomer can be inserted into the interlayer more effectively. It is an organic / An excellent filler for inorganic nanocomposites, widely used in the preparation industry of coatings, anti-sedimentation paints, solid catalysts, etc. [0003] In 1976, Japanese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/34C08L75/04
Inventor 郑叶芳
Owner 郑叶芳
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