Preparation method and application of magnesium oxide flame retardant

A flame retardant, magnesium oxide technology, applied in the direction of magnesium oxide, etc., can solve problems such as complicated operation, poor UV resistance, and corrosion of metal parts

Pending Publication Date: 2021-07-06
珠海格力新材料有限公司 +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the flame retardants added to polymers are halogen-based flame retardants. Although these flame retardants have high flame retardant efficiency, there are still some problems, such as corrosion of metal parts, poor UV resistance, etc.
In addition, this type of flame retardant uses a large amount of toxic substances, and its harm to the human body can be imagined
[0003] The traditional preparation of magnesium oxide is mainly prepared by direct precipitation method. Although this method does not require the use of high-energy-consuming equipment, the operation is relatively complicated.

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
  • Preparation method and application of magnesium oxide flame retardant
  • Preparation method and application of magnesium oxide flame retardant

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] Therefore, the preparation method of the magnesium oxide flame retardant involved in the first aspect of the present invention comprises the following steps:

[0023] S1, placing an aqueous solution containing soluble magnesium salt and urea in a reactor for hydrothermal reaction to obtain a reaction product;

[0024] S2, washing, drying and calcining the reaction product to obtain a magnesium oxide flame retardant.

[0025] In the present invention, the aqueous solution comprising soluble magnesium salt and urea can be prepared by the following operations: soluble magnesium salt and urea are placed in deionized water, and ultrasonic treatment (or mechanical stirring method) is used to make it completely dissolved in Deionized water to obtain an aqueous solution containing soluble magnesium salts and urea.

[0026] The advantage of using urea as the raw material of the present invention is that other common alkali solutions (such as ammonia or sodium hydroxide, etc.) a...

Embodiment 1

[0045] Using magnesium nitrate and urea as raw materials, weigh 2.23g of magnesium nitrate and 0.90g of urea, place the weighed raw materials in 50mL of deionized water and use ultrasonic treatment to completely dissolve them in deionized water, and then dissolve the dissolved The aqueous solution of magnesium nitrate and urea (the molar ratio of magnesium nitrate and urea in the aqueous solution is 1:1, and the molar concentration of magnesium nitrate in the aqueous solution is 0.3mol / L) is transferred to an autoclave and reacted at 120°C 12 hours. After the reactor was cooled to room temperature, the product solution was transferred to a clean beaker, and the obtained reaction product was washed with deionized water and absolute ethanol respectively. After washing to neutrality, the reaction product was dried in an oven at 60°C. After drying, the reaction product was placed in a porcelain boat and transferred to a muffle furnace, calcined at 500°C for 5 hours, and after coo...

Embodiment 2

[0047] The magnesia flame retardant 1 prepared in the above-mentioned Example 1 and tris(tribromophenoxy)triazine are filled synergistically with PC / ABS alloy materials in different mass ratios, and the vertical ignition method is investigated in different mass ratios. Under the conditions of magnesia flame retardant 1 flame retardant and smoke suppression, and the mechanical properties of PC / ABS alloy materials (notched Izod impact strength as an example), the results are shown in Table 1.

[0048] Table 1

[0049]

[0050] It can be seen from Table 1 that when the magnesium oxide flame retardant 1 and tris(tribromophenoxy)triazine are used to synergistically fill the PC / ABS alloy material with a mass ratio of 3:8 and 4:7, the material performs better Excellent flame retardancy and smoke suppression ability. Especially when the magnesium oxide flame retardant 1 and tris(tribromophenoxy)triazine are synergistically filled in the PC / ABS alloy material with a mass ratio of 4...

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
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method and application of a magnesium oxide flame retardant. The method comprises the following steps of: S1, putting an aqueous solution containing soluble magnesium salt and urea into a reaction kettle for hydrothermal reaction to obtain a reaction product; and S2, washing, drying and calcining the reaction product to obtain the magnesium oxide flame retardant. According to the method, the magnesium oxide flame retardant is prepared by adopting a simple one-step low-temperature hydrothermal method, so that the operation steps are simplified, and meanwhile, the yield of magnesium oxide is increased. In addition, compared with the traditional halogen flame retardant, the magnesium oxide flame retardant prepared by the method has flame retardant and smoke abatement properties, and has the characteristics of no volatilization, no toxicity, small corrosion and no secondary pollution. The prepared magnesium oxide flame retardant and a halogen flame retardant are synergistically used, so that the material is endowed with flame retardant property, and meanwhile, the mechanical property of the material is not obviously influenced.

Description

technical field [0001] The invention belongs to the field of flame retardant preparation, and in particular relates to a preparation method and application of a magnesium oxide flame retardant. Background technique [0002] At present, most of the flame retardants added to polymers are halogen-based flame retardants. Although these flame retardants have high flame retardant efficiency, there are still some problems, such as corrosion of metal parts and poor UV resistance. In addition, this type of flame retardant uses a large amount of toxic substances, and its harm to the human body can be imagined. [0003] The traditional preparation of magnesium oxide mainly adopts the direct precipitation method. Although this method does not require the use of high-energy-consuming equipment, the operation is relatively complicated. Therefore, it is necessary to develop a method with high yield and easy operation to realize the efficient production of MgO flame retardants. Contents ...

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
IPC IPC(8): C01F5/02C08K3/22C08L69/00C08L55/02
CPCC01F5/02C08K3/22C08L69/00C08L55/02C08K2003/222C08L2201/02
Inventor 李民轩王琳丁龙龙张从武刘冬丽刘磊
Owner 珠海格力新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap