Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of micronano basic magnesium carbonate flame retardant and preparation method thereof

A magnesium carbonate, micro-nano technology, applied in the field of nano-materials, can solve the problems of non-flame retardant flame retardant effect measurement, no green environmental protection characteristics, no green environmental protection, etc., achieve good smoke suppression effect, reduce heat transfer effect, Excellent flame retardant effect

Active Publication Date: 2021-03-12
WUHAN TEXTILE UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN102583457A introduces a method for synthesizing a nano needle-shaped magnesium hydroxide flame retardant, using bischofite, slaked lime, and calcium chloride dihydrate as raw materials, polyethylene glycol and sodium lauryl sulfate as dispersants, through Ball mill ball milling is obtained by heat treatment. This method has cumbersome steps and introduces more organic solvents. It is not environmentally friendly, and the patent does not specifically measure the flame retardant effect of flame retardants.
[0005] Patent CN106673027A introduces a preparation method of hexagonal flaky magnesium hydroxide flame retardant, which is prepared by hydrothermal reaction with magnesium salt solution, structure-directing agent, inorganic alkali solution and absolute ethanol as raw materials. This method uses Most of the structure-directing agents are organic substances such as organic bases or surfactants. The preparation process is accompanied by the generation of organic waste liquid, which does not have environmental protection characteristics, and the patent does not specifically measure the flame-retardant effect of flame retardants.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of micronano basic magnesium carbonate flame retardant and preparation method thereof
  • A kind of micronano basic magnesium carbonate flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of this flame retardant is as follows:

[0027] Prepare 200mL of aqueous sodium carbonate solution (0.1mol / L) and 200mL of magnesium chloride hexahydrate solution (0.1mol / L) respectively, and add the aqueous sodium carbonate solution dropwise at a rate of 50mL / min to the magnesium chloride hexahydrate solution stirred at a constant speed of 1000rpm ; After the addition is completed, put the mixed solution in an oven at 90°C for aging for 5 hours; after the aging is completed, filter out the precipitate, wash and dry at 30°C for 60 minutes; Fuel.

[0028] The nano basic magnesium carbonate flame retardant was imaged by scanning electron microscopy, and the results were as follows: figure 1 As shown, the nanoparticles have a spherical structure, stacked by multi-layer nanosheets, similar to flower petals, and the particle size distribution is uniform, and the size of the nanoparticles is between 30 and 50 μm, and the shape stability is good. The ...

Embodiment 2

[0032] The preparation method of this flame retardant is as follows:

[0033] Prepare 200mL of aqueous sodium carbonate solution (0.1mol / L) and 200mL of magnesium chloride hexahydrate solution (0.1mol / L) respectively, and add the aqueous sodium carbonate solution dropwise at a rate of 1mL / min to the magnesium chloride hexahydrate solution stirred at a constant speed of 1000rpm After the addition is completed, the mixture is aged in an oven at 50°C for 5 hours; after the aging is completed, the precipitate is filtered out, washed and dried at 100°C for 60 minutes; after drying, the petal-shaped micro-nano basic magnesium carbonate barrier is obtained. Fuel.

[0034] The flame retardant effect test of this flame retardant is as follows:

[0035] Basic magnesium carbonate was spun into a film with a width of 15 mm and a thickness of 0.1 mm in the electrospinning solution doped with 5 wt % of cellulose acetate, and the combustion rate of the composite film was measured to be 498....

Embodiment 3

[0037] The preparation method of this flame retardant is as follows:

[0038]Prepare 200mL of aqueous sodium carbonate solution (1.5mol / L) and 200mL of magnesium chloride hexahydrate solution (1.5mol / L) respectively, and add the aqueous sodium carbonate solution dropwise at a rate of 1mL / min to the magnesium chloride hexahydrate solution stirred at a constant speed of 1000rpm ;After the addition is completed, put the mixed solution in a 50°C oven to mature for 0.5h; after the aging is completed, filter out the precipitate, wash and dry at 30°C for 60min; after drying, you can get petal-shaped micro-nano basic magnesium carbonate flame retardant.

[0039] The flame retardant effect test of this flame retardant is as follows:

[0040] Basic magnesium carbonate is spun into a film with a width of 15 mm and a thickness of 0.1 mm in the electrospinning solution doped with 5 wt % of cellulose acetate, and the horizontal and vertical combustion method measures the burning rate of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a micronano basic magnesium carbonate flame retardant and a preparation method thereof. The preparation method comprises the following steps: 1) Adding a soluble carbonate aqueous solution with a concentration of 0.1 to 1.5 mol / L dropwise at a rate of 1 to 50 mL / min to a uniformly stirred aqueous solution of magnesium chloride hexahydrate with a concentration of 0.1 to 1.5 mol / L 2) put the mixed solution obtained in step 1) into an oven for curing, the curing temperature is 50-90° C., and the time is 0.5-5 hours; and 3) further filter the mixed solution obtained in step 2), wash it, and heat it at 30-100° C. Dry for 30-60 minutes to prepare a micronano basic magnesium carbonate flame retardant, whose chemical formula is Mg 5 (CO 3 ) 4 (OH) 2 4H 2 O. According to the micronano basic magnesium carbonate flame retardant provided by the present invention, the preparation process does not need to use organic solvents, is environmentally friendly, has excellent flame retardant effect, and good smoke suppression effect.

Description

technical field [0001] The present invention relates to the field of nanomaterials, more specifically to a kind of micronano basic magnesium carbonate flame retardant and preparation method thereof. Background technique [0002] With the development of modern industry, the application scale of high molecular polymers is constantly expanding. Most of these substances are flammable, which leads to increasingly prominent fire hazards. In recent years, large-scale fire incidents have occurred frequently, and most of the fatal causes of fire It is the excessive smoke that causes suffocation. Part of the cause of the accident was that the molten metal from the welding spatter ignited a large number of flammable fragments of polyurethane insulation material accumulated below, which caused the fire. Therefore, the containment of the fire is imminent. Starting from raw materials, the method to contain combustion is mainly to add appropriate flame retardants, thereby improving the h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01F5/24C09K21/02C08K3/26C08K7/00B82Y40/00
CPCB82Y40/00C01F5/24C01P2004/32C01P2004/45C01P2004/61C08K3/26C08K7/00C09K21/02
Inventor 邓波姜浪李可刘欣夏治刚李文斌徐卫林
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com