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Layered aluminum phosphate flame retardant synergist for intumescent flame retardant, preparation method and composition

A technology of flame retardant synergist and intumescent flame retardant, which is applied in the field of layered aluminum phosphate flame retardant synergist, can solve the problems of poor compatibility between clay and polymer, complicated preparation process, etc., and achieve low cost and simple preparation process Effect

Active Publication Date: 2018-01-16
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the structure of layered aluminum phosphate is similar to that of clay, untreated clay has poor compatibility with polymers, so it is necessary to organically modify the clay before use to increase the interlayer distance and improve its compatibility in polymers properties, so that the layered clay can be dispersed in the polymer at the nanoscale, and the preparation process is relatively complicated

Method used

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  • Layered aluminum phosphate flame retardant synergist for intumescent flame retardant, preparation method and composition
  • Layered aluminum phosphate flame retardant synergist for intumescent flame retardant, preparation method and composition
  • Layered aluminum phosphate flame retardant synergist for intumescent flame retardant, preparation method and composition

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Experimental program
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Effect test

Embodiment 1

[0032] Table 1 - Synergist LAP-C 12 The effect on the flame retardancy of traditional intumescent flame retardants, taking polypropylene (PP) as an example. where LAP-C 12 Prepared by aluminum phosphate, aliphatic amine template is dodecyl primary amine, aluminum source is aluminum acetate, x=1.0.

[0033] Traditional intumescent flame retardant (IFR) formula: polyphosphate amine (APP) 70.0wt.%, pentaerythritol 30.0wt.%; maleic anhydride grafted polypropylene (PP-g-MAH) is a compatibilizer. Its sample formula is shown in Table 1:

[0034] Table 1

[0035]

Embodiment 2

[0037] Table 2 - The effect of the interlayer spacing of organic-inorganic layered aluminum phosphate on its dispersion state, synergistic flame retardancy, and mechanical properties. In the preparation of organic-inorganic layered aluminum phosphate, the aluminum source is pseudo-boehmite, and the template is n-C m h 2m+1 NH 2 (m=8, 12, 18), x=1.0, LAP-C for layered aluminum phosphate with different layer spacing m (m=8, 12, 18) means. Flame retardant composition (IFR-1-LAP-C m ) is: ammonium polyphosphate 60.0wt.%, manganese glycerophosphate 10.0wt.%, LAP-C m 10.0wt.%, chitosan 5.0wt.%, phenolic resin 15.0wt.%. IFR-1 and IFR-1-LAP-C m The difference is without adding LAP-C m . The sample formula is shown in Table 2:

[0038] Table 2

[0039]

Embodiment 3

[0041] Table 3 - Effect of organic-inorganic heteroatom-doped layered aluminum phosphate on synergistic flame retardant properties of synergistic flame retardants. In the preparation of heteroatom-doped layered aluminum phosphate, the aliphatic amine template is dodecyl primary amine, the aluminum source is aluminum nitrate, x=0.9, and Me is Ni, Co, Cu, Mn, Mg and Zn, Me :Al=1:9, LMeAP-C for layered aluminum phosphate doped with heteroatoms 12 express. Flame retardant composition IFR-2-LAMeP-C 12 For: LAMeP-C 12 10.0wt.%, melamine polyphosphate 50.0wt.%, guanidine 9.0wt.%, cyclohexanol 30.0wt.%, red phosphorus 1.0wt.%. IFR-2 and IFR-2-LAMP-C 12 The difference is without adding LAMP-C 12 . The sample formula is shown in Table 3 below:

[0042] table 3

[0043]

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Abstract

The present invention relates to a layered aluminum phosphate flame-retardant synergist for an intumescent flame retardant, a preparation method and a composition. The synergist is an organic-inorganic layered aluminum phosphate produced by reaction of phosphoric acid, an aluminum source, a heteroatom source and aliphatic amine, a inorganic skeleton is inorganic layered structure formed by an alternate link of Al(Me)-O-P-O chemical bonds, the aliphatic amine being between the inorganic layers; in the inorganic skeleton, Me is a doped atom and makes up 5-20.0% in molar percentage of total elements of Me, Al and P. The synergist can form a flame-retardant composition with a phosphorus source, a nitrogen source and a carbon source. Experiments and applications prove that by using the composition as a flame retardant, the composition has a good flame-retardant effect in polypropylene, polyethylene and polyamide. Compared with similar products in the market, addition of an less amount can achieve the same flame-retardant effect.

Description

technical field [0001] The invention relates to a layered aluminum phosphate flame retardant synergist for expansion flame retardants, a preparation method and a composition thereof. Background technique [0002] As we all know, polymer materials have been widely used in transportation, construction, transportation, communication and other fields due to their excellent performance. However, most polymer materials are flammable. With the continuous expansion of the application range of polymer materials, the requirements for flame retardancy of polymer materials have become higher and higher in recent years. Chlorine-containing flame retardants have high flame retardant efficiency and high cost performance. They have been used as the main organic flame retardants for the flame retardant of polymer materials for a long time, but when burned, the halogen flame retardants decompose to produce smoke, corrosive, toxic Gas has a serious impact on the environment and people's life ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K7/00C08K13/06C08K9/10C08K3/32C08K3/02C08K5/3492C08L23/12C08L23/06C08L77/00
CPCC08K3/02C08K3/32C08K5/34922C08K7/00C08K9/04C08K9/10C08K13/06C08K2003/026C08K2003/327C08K2003/329C08L23/12C08L2201/02C08L2205/03C08L2207/066C08L51/06C08K5/053C08K2003/323C08L5/08C08L61/06C08L77/06C08L23/06
Inventor 李小双刘源姚有为郭超锋
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV