Modified aluminum hypophosphate flame retardant and preparation method thereof

A technology of aluminum hypophosphite and flame retardant, applied in the field of flame retardants, can solve the problems of poor compatibility, poor dispersion, poor heat resistance of aluminum hypophosphite, etc., to reduce surface polarity, improve heat resistance, and improve reaction cycle short effect

Inactive Publication Date: 2018-04-20
广东顺德同程新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a modified aluminum hypophosphite flame retardant and a preparation method, which can effectively improve the problems of poor heat resistance, poor compatibility and poor dispersibility of aluminum hypophosphite

Method used

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  • Modified aluminum hypophosphate flame retardant and preparation method thereof
  • Modified aluminum hypophosphate flame retardant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] In a 200L high-pressure reactor with a stirring paddle and a reflux device, add 150L of pure water and 30kg of aluminum hypophosphite, start stirring, then add 0.5kg of sodium lauryl sulfate, stir for 1 hour, and then add 5kg of melamine cyanurate Salt, 0.3kg melamine and 0.178kg cyanuric acid, stir and heat up to 80°C, and finally add 6kg of polyacrylate dropwise, after the dropwise addition, raise the temperature to 180°C and stir for 8 hours, after the reaction, cool the solution to 40°C Perform centrifugation, wash twice with pure water, and finally place the solid obtained by centrifugation in an oven at 130°C to dry to obtain the target product modified aluminum hypophosphite 1, and the product yield is 97.88%. The modified aluminum hypophosphite infrared spectrum prepared by the present embodiment is as follows: figure 1 As shown, the thermogravimetric spectrum is shown as figure 2 shown.

Embodiment 2

[0052] In a 1000L enamel reaction kettle with stirring paddle and reflux device, add 850L pure water and 125kg aluminum hypophosphite, start stirring, then add 6.25kg citric acid, stir for 2 hours, then add 62.5kg polyphosphate melamine salt, stir Raise the temperature to 90°C, and finally add 12.5kg of modified wax. After the dropwise addition, stir and react at a constant temperature for 12 hours. After the reaction, cool the solution to 35°C for centrifugation, wash twice with pure water, and finally place the solid obtained by centrifugation. Dry in an oven at 80°C to obtain the target product, modified aluminum hypophosphite 2, with a yield of 98.5%.

Embodiment 3

[0054]In a 5L four-necked flask with a stirring paddle and a reflux device, add 3.5L of pure water and 350g of aluminum hypophosphite, start stirring, then add 9g of sodium dodecylbenzenesulfonate, stir for 0.5 hours, then add 90g of six Aminocyclotriphosphazene, stir and heat up to 60°C, and finally add 18g of epoxy resin dropwise, heat up to 85°C and stir for 10 hours after the dropwise addition, after the reaction, cool the solution to below 60°C for centrifugation, and use pure Wash twice with water, and finally place the centrifuged solid in an oven at 120°C for drying to obtain the target product, modified aluminum hypophosphite 3, with a product yield of 96.91%.

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Abstract

The invention relates to the field of flame retardants, in particular to a modified aluminum hypophosphate flame retardant. A preparation method of the modified aluminum hypophosphate flame retardantcomprises the following steps: 1) adding aluminum hypophosphate and a dispersing agent in a reaction kettle and fully stirring, so that a solution is uniformly dispersed; 2) adding an adhesive and a modifying agent, raising the temperature, stirring and fully reacting to obtain a crude product; and 3) washing, filtering and drying the crude product to obtain the modified aluminum hypophosphate flame retardant. The modified aluminum hypophosphate flame retardant prepared by the preparation method provided by the invention can effectively solve the problems of low aluminum hypophosphate heat resistance, low compatibility, low dispersing performance and the like.

Description

technical field [0001] The invention relates to the field of flame retardants, in particular to a modified aluminum hypophosphite flame retardant and a preparation method. Background technique [0002] In recent years, the application of polymer materials has become more and more extensive, and they are widely used in electronic appliances, automobiles, construction, textiles, aerospace and other fields. However, due to the low ignition point of polymer materials, there are serious fire hazards. To solve this problem, adding flame retardants to polymer materials is the most common method. Traditional halogenated flame retardants flame-retardant polymer materials have disadvantages such as large amount of smoke and toxic gas when burning, and have been banned by many countries. Therefore, the research and development of environmentally friendly and efficient halogen-free flame retardants has very important application value for the development of high-performance polymer fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K9/04C08K3/32
CPCC08K9/10C08K3/32C08K9/04
Inventor 罗海荣黄仁义程飞
Owner 广东顺德同程新材料科技有限公司
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