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N-(phosphonic acid methyl) glycine rare earth charring agent as well as preparation method and application thereof

A technology of phosphonic acid methyl and glycine, which is applied in the field of flame retardant materials, can solve problems such as residues, non-target biological toxicity, human health and fertility threats, and achieve the effects of easy control, good flame retardant effect, and low price

Pending Publication Date: 2021-12-17
XIAMEN INST OF RARE EARTH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, due to the widespread use of glyphosate, a large number of residues in the natural environment have caused potential threats to human health and fertility in addition to being toxic to non-target organisms in the ecosystem.

Method used

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  • N-(phosphonic acid methyl) glycine rare earth charring agent as well as preparation method and application thereof
  • N-(phosphonic acid methyl) glycine rare earth charring agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 74 parts of polylactic acid, 15 parts of piperazine pyrophosphate, 10 parts of N-(phosphonic acid methyl) glycine rare earth char-forming agent, 0.5 part of antioxidant, and 0.5 part of lubricant into a mixer and mix evenly. Then put it into a twin-screw extruder for melt blending, extrusion and granulation. The extrusion temperature is 165°C, 175°C, 180°C, 180°C, 180°C, 180°C, 175°C, which is designated as sample 1. Wherein, the antioxidant is zinc dialkyldithiophosphate, the lubricant is EBS, and the flame retardant test is carried out according to the test standards of ASTMD 3801 and ASTMD 2863-97.

Embodiment 2

[0040] Take 79 parts of polylactic acid, 10 parts of piperazine pyrophosphate, 10 parts of N-(phosphonic acid methyl)glycine rare earth char-forming agent, 0.5 part of antioxidant, and 0.5 part of lubricant into a mixer and mix evenly. Then put it into a twin-screw extruder for melt blending, extrusion and granulation. The extrusion temperature is 165°C, 175°C, 180°C, 180°C, 180°C, 180°C, 175°C, which is designated as sample 2. Wherein, the antioxidant is zinc dialkyldithiophosphate, the lubricant is EBS, and the flame retardant test is carried out according to the test standards of ASTMD 3801 and ASTMD 2863-97.

Embodiment 3

[0042] Take 84 parts of polylactic acid, 10 parts of piperazine pyrophosphate, 5 parts of N-(phosphonic acid methyl) glycine rare earth char-forming agent, 0.5 part of antioxidant, and 0.5 part of lubricant into a mixer and mix evenly. Then it was added into a twin-screw extruder for melt blending, extrusion and granulation. The extrusion temperature was 165°C, 175°C, 180°C, 180°C, 180°C, 180°C, 175°C, which was designated as sample 3. Wherein, the antioxidant is zinc dialkyldithiophosphate, the lubricant is EBS, and the flame retardant test is carried out according to the test standards of ASTMD 3801 and ASTMD 2863-97.

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Abstract

The invention discloses an N-(phosphonic acid methyl) glycine rare earth charring agent as well as a preparation method and application thereof. The structural formula of the N-(phosphonic acid methyl) glycine rare earth charring agent is shown in the description, wherein R is cerium, lanthanum, praseodymium, neodymium, samarium or europium. The N-(phosphonic acid methyl) glycine rare earth charring agent is decomposed in the middle stage of combustion to generate a metal oxide and a phosphorus-containing compound participating in carbon formation promotion, thereby enabling a carbonaceous layer to be more complete, and preventing heat transfer and flammable small molecules on the combustion surface from contacting the flame.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to an N-(phosphonic acid methyl)glycine rare earth carbon forming agent and a preparation method and application thereof. Background technique [0002] Polymer materials have been widely used in daily life, but a large number of polymer materials based on hydrocarbon components are inherently flammable, which severely limits their application range. In recent years, halogen-free flame retardant has become a social consensus. The traditional halogen-free flame retardant method is generally to add a large amount of phosphorus and nitrogen salt flame retardants to the material system, such as ammonium polyphosphate, piperazine pyrophosphate and other flame retardants, or phosphate flame retardants, such as trimethyl phosphate esters or compounds such as triphenyl phosphate. In the way of compounding metal hydroxides such as aluminum hydroxide or magnesiu...

Claims

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Application Information

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IPC IPC(8): C07F9/38C08K5/5317C08K5/3462C08L23/12C08L67/04
CPCC07F9/3813C08K5/0091C08K5/3462C08L2201/02C08L67/04C08L23/12
Inventor 宋立军林凤龙陈建任吴银财王胜龙
Owner XIAMEN INST OF RARE EARTH MATERIALS