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Composite flame retardant and preparation method thereof

A composite flame retardant and compound technology, which is applied in the field of composite flame retardants and their preparation, can solve the problems of dialysis, frost spraying, non-aging resistance, etc., and achieve the effects of simple preparation process, bright application prospect and good flame retardant effect.

Active Publication Date: 2017-05-31
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these components are polar substances, easy to absorb moisture, and have poor miscibility with non-polar polymers; therefore, directly blending them as flame retardants for polyolefin and other plastics is likely to cause blooming, dialysis and deterioration of performance and other problems; if it is added to water-based coatings such as amino for flame-retardant improvement, it is easy to make the durability of the cured coating worse. The main performance is that it is not anti-aging, and the coating will crack or fall off in a short period of time.

Method used

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  • Composite flame retardant and preparation method thereof
  • Composite flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First put 1000 grams of chitosan, 1650 grams of phytic acid, 100 grams of water, 2350 grams of melamine, and 400 grams of white carbon black into a reaction kettle equipped with condensation, reflux, stirring and temperature control systems, and mechanically stir and mix evenly. And program temperature control to make the resulting mixture react at 105°C for 3 hours; then, add 5000 grams of acetic anhydride and 300 grams of 3-aminopropyltrimethoxysilane while stirring, continue to mechanically stir, mix well, and control the temperature to make the second The resulting mixture was reacted at 145°C for 0.5h; finally, 150g of urea was added, stirred and mixed continuously, and the mixture obtained three times was solidified and reacted at 250-260°C for 0.5h, discharged, cooled, pulverized, and passed through a 200-mesh sieve to obtain urea. Fuel 1.

Embodiment 2

[0022] First put 1000 grams of chitosan, 2000 grams of phytic acid, 200 grams of water, 1970 grams of melamine, and 300 grams of white carbon black into a reaction kettle equipped with condensation, reflux, stirring and temperature control systems, and mechanically stir and mix evenly. And program temperature control to make the resulting mixture react at 120°C for 2 hours; then, add 3300 grams of acetic anhydride and 500 grams of 3-aminopropyltrimethoxysilane while stirring, continue to mechanically stir, mix well, and control the temperature to make the second The resulting mixture was reacted at 135°C for 0.75h; finally, 200g of urea was added, stirred and mixed continuously and the mixture obtained three times was solidified and reacted at 250-260°C for 0.5h, discharged, cooled, and crushed through a 200-mesh sieve to obtain a flame retardant Agent 2.

Embodiment 3

[0024] First put 1000 grams of chitosan, 2400 grams of phytic acid, 300 grams of water, 1600 grams of melamine, and 200 grams of white carbon black into a reaction kettle equipped with condensation, reflux, stirring and temperature control systems, and mechanically stir and mix evenly. And program temperature control to make the resulting mixture react at 135 ° C for 1 hour; then, add 2600 grams of acetic anhydride and 100 grams of 3-aminopropyltrimethoxysilane while stirring, continue to mechanically stir, mix well, and control the temperature to make the second The resulting mixture was reacted at 125°C for 1 hour; finally, 250 grams of urea was added, continuously stirred and mixed, and the mixture obtained three times was solidified and reacted at 250-260°C for 0.5 hours, discharged, cooled, and crushed through a 200-mesh sieve to obtain a flame retardant 3.

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PUM

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Abstract

The invention discloses a composite flame retardant and a preparation method thereof. The composite flame retardant is characterized by being formed by mixing and reacting a chitin compound, a phytic acid compound, acetic anhydride, siloxane, polyamine, white carbon black, urea and water, wherein the chitin compound is at least one of chitin or chitosan; the phytic acid compound is at least one of phytic acid, sodium phytate, potassium phytate, magnesium phytate, calcium phytate, iron phytate, cobalt phytate or zinc phytate. Preparation method of the flame retardant mainly relates to a three-stage mixed reaction process: firstly, uniformly mixing the chitin compound, the phytic acid compound, water, polyamine and white carbon black; then adding acetic anhydride and siloxane to be uniformly mixed; and finally, putting urea to be uniformly mixed, and discharging, cooling and crushing the mixture to obtain a product. The composite flame retardant disclosed by the invention not only can effectively retard flames of polyolefin and woods, but also has good compatibility with polyolefin and an amino resin aqueous coating, and can effectively avoid phenomena of blooming, white spraying, dialyzing and fracturing.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a composite flame retardant and a preparation method thereof. Background technique [0002] Polymers have been widely used in all aspects of production and life due to their good performance and low price. However, most polymers are flammable, and many applications have specific flame retardancy requirements. Halogen-containing flame retardant, such as halogen-antimony synergistic effect, high efficiency and low cost, is the main means of traditional commercial flame retardant. However, halogen-containing flame retardants have persistent pollution and damage the ozone layer, and are now strictly prohibited by most countries. In the past two decades, halogen-free flame retardant has become the focus of polymer flame retardant research. The halogen-free intumescent flame retardant system with ammonium polyphosphate, pentaerythritol and melamine as the core com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08K13/02C08K3/36C08K5/521C08K5/21C08L23/12C08L23/06C09D161/24C09D5/18
CPCC08K3/36C08K5/21C08K5/521C08K13/02C08L5/08C08L23/06C08L23/12C08L2201/02C09D5/18C09D161/24
Inventor 陈潇川陈荣国陈树泉钱庆荣陈庆华肖荔人
Owner FUJIAN NORMAL UNIV
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