Halogen-free flame retardant polyether thermoplastic polyurethane elastomer and preparation method thereof

A technology of thermoplastic polyurethane and flame-retardant polyether, which is applied in the field of halogen-free flame-retardant polyether thermoplastic polyurethane elastomer and its preparation, can solve the problems of large flame retardant addition, melting drop, release, etc., and achieve excellent flame retardant Flammability, good mechanical properties, excellent flame retardant properties

Inactive Publication Date: 2015-06-10
苏州安鸿泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of polyether-type TPU is that it is a flammable material with an oxygen index of only about 18%, and when it burns, there will be thick smoke accompanied by a large amount of harmful gas release and severe molten droplets, so it needs to be flame-retardant modified to meet application requirements
[0003]The current commercialized flame-retardant polyether TPU mainly uses brominated flame retardants and metal hydroxide flame retardants for flame retardancy, but brominated flame retardants The flame retardant has environmental protection problems due to the halogen content; the metal hydroxide flame retardant is added in a large amount, which has a great impact on the surface and mechanical properties of TPU products

Method used

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  • Halogen-free flame retardant polyether thermoplastic polyurethane elastomer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] The raw material formula for preparing the halogen-free flame-retardant polyether type TPU elastomer in this embodiment is as follows:

[0037] TPU particles 100 parts

[0038] Melamine polyphosphate (MPP) 20 parts

[0039] 10 parts of methyl cyclohexyl phosphinate

[0040] 10 parts of piperazine pyrophosphate

[0041] Magnesium oxide 2 parts

[0042] Dow Corning 11-100 0.5 parts

[0043] Antioxidant 168 0.5 parts

[0044] Antioxidant 1010 1 part

[0045] Silane coupling agent 1 part

[0046] Silicone powder 0.5 parts

Embodiment 2

[0048] The raw material formula for preparing the halogen-free flame-retardant polyether type TPU elastomer in this embodiment is as follows:

[0049] TPU particles 100 parts

[0050] Aluminum diethylphosphinate (ADP) 20 parts

[0051] Melamine cyanurate (MCA) 10 parts

[0052] Pentaerythritol 10 parts

[0053] Triazine char-forming agent 5 parts

[0054] Hydrotalcite 1 part

[0055] Resorcinol (diphenyl phosphate) (RDP) 1 part

[0056] Dow Corning 11-100 0.5 parts

[0057] Antioxidant B215 1.5 parts

[0058] Silane coupling agent 0.5 parts

[0059] Silicone powder 0.5 parts

Embodiment 3

[0061] The raw material formula for preparing the halogen-free flame-retardant polyether type TPU elastomer in this embodiment is as follows:

[0062] TPU particles 100 parts

[0063] Aluminum phenyl hypophosphite (AIPP) 20 parts

[0064] Melamine cyanurate (MCA) 10 parts

[0065] Pentaerythritol caged phosphate (PEPA) 8 parts

[0066] Dipentaerythritol 7 parts

[0067] Hydrotalcite 1 part

[0068] Resorcinol (diphenyl phosphate) (RDP) 1 part

[0069] Dow Corning 11-100 0.5 parts

[0070] Antioxidant B215 1 part

[0071] Aluminate coupling agent 0.5 parts

[0072] Zinc stearate 0.5 parts

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Abstract

The invention relates to a halogen-free flame retardant polyether thermoplastic polyurethane elastomer which is prepared by the following components in parts by weight: 100 parts of polyether thermoplastic polyurethane elastomer resin, 30-50 parts of phosphor-nitrogen flame retardant system and 1-5 parts of flame retardant synergist, wherein the phosphor-nitrogen flame retardant system is prepared by mixing a flame retardant and a char-forming agent with weight ratio of 1-4: 1; and the flame retardant is one or a mixture of phenoxy cycloposphazene, melamine phosphate compound, melamine cyanurate and hypophosphite. The flame retardant performance of the polyether TPU (thermoplastic polyurethane) is modified by selecting the special phosphor-nitrogen flame retardant system; and the obtained flame retardant polyether TPU material is halogen-free, environment-friendly and safe, has a limit oxygen index (LOI) of up to 37% and has excellent flame retardant performance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant polyether thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU, Thermoplastic polyurethane) is mainly divided into polyester type and polyether type. Polyether TPU has the advantages of high strength, hydrolysis resistance, high resilience and good low temperature performance, and is widely used in the production of wire and cable sheaths, sports mountaineering shoe materials, fireproof, heat and sound insulation materials, and multifunctional films. The disadvantage of polyether-type TPU is that it is a flammable material with an oxygen index of only about 18%, and when it burns, there will be thick smoke accompanied by a large amount of harmful gas release and severe molten droplets, so it needs to be flame-retardant modified to meet ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K13/02C08K5/3492C08K3/22C08K5/5313C08K5/053C08K3/26C08K5/523C08K5/5399
Inventor 李国俊肖锡福李高涛
Owner 苏州安鸿泰新材料有限公司
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