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A kind of antistatic flame retardant thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and elastomer technology, which is applied in the field of antistatic flame retardant thermoplastic polyurethane elastomer and its preparation, can solve the problems of poor compatibility, decline in the mechanical properties of polyurethane elastomer, and limit the use range of polyurethane elastomer, and achieve mechanical properties Small, improve the mechanical properties, improve the effect of flexibility

Active Publication Date: 2022-04-12
东莞毅工工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But no matter adding flame retardants or antistatic agents, it also brings some serious problems, mainly in: poor compatibility between flame retardants and elastomers; flame retardants emit a large amount of toxic gases (such as HCl , HCN, etc.), producing a large amount of smoke and emitting a large amount of corrosive substances; the addition of flame retardants and static agents causes the mechanical properties of polyurethane elastomers to decline; due to the existence of these problems, the use of polyurethane elastomers is largely limited scope

Method used

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  • A kind of antistatic flame retardant thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare antistatic flame retardant thermoplastic polyurethane elastomer, comprising the following steps:

[0027] Step 1, take by weighing 55 parts of thermoplastic polyurethane elastomers, 12 parts of flame retardants, 6 parts of antistatic agents, 3.5 parts of compatibilizers, 3.5 parts of plasticizers, 0.75 parts of antioxidants and 0.75 parts of lubricants; The combustion agent is melamine salt of pentaerythritol phosphate with a mass ratio of 3:2:2:3, graphite, nano-aluminum hydroxide and nano-magnesium hydroxide, and the antistatic agent is oily monostearyl ester with a mass ratio of 6:4 and ethoxylated amine, the compatibilizer is polyethylene grafted maleic anhydride, the plasticizer is dipropylene glycol dibenzoate, and the antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionate] pentaerythritol ester, lubricant is zinc stearate;

[0028] Step 2, adding the thermoplastic polyurethane elastomer into a mixer at 60-120°C, and stirring for 35-45 ...

Embodiment 2

[0032] The difference from Example 1 is the composition of antistatic and flame retardant thermoplastic polyurethane elastomer: 40 parts of thermoplastic polyurethane elastomer, 5 parts of flame retardant, 2 parts of antistatic agent, 2 parts of compatibilizer, 2 parts of plasticizer, antistatic 0.1 part of oxygen agent and 0.1 part of lubricant; wherein, the flame retardant is melamine salt, graphite, and nano aluminum hydroxide of pentaerythritol phosphate with a mass ratio of 3:2:5, and the antistatic agent is melamine salt with a mass ratio of 4:6 Oil monostearyl ester and ethoxylated amine, compatibilizer is EPDM rubber grafted maleic anhydride, plasticizer is dimethyl adipate, antioxidant is 4,4'-thiobis( 6-tert-butyl-3-methylphenol), and the lubricant is hydroxyl silicone oil.

[0033] The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0035] The difference from Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 50 parts of thermoplastic polyurethane elastomer, 10 parts of flame retardant, 4 parts of antistatic agent, 3 parts of compatibilizer, 3 parts of plasticizer, antistatic 0.5 part of oxygen agent and 0.5 part of lubricant; wherein, flame retardant is the melamine salt of pentaerythritol phosphate ester, graphite, nanometer magnesium hydroxide that the mass ratio is 3:2:5, and antistatic agent is that the mass ratio is 5:5 Oil monostearyl ester and ethoxylated amine, compatibilizer is polyolefin elastomer grafted maleic anhydride, plasticizer is diethylene glycol dibenzoate and diethyl adipate, antioxidant is sulfur Substituting dilauryl dipropionate, the lubricant is silicone powder.

[0036] The rest are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention belongs to the technical field of polymer materials, and in particular relates to an antistatic flame retardant thermoplastic polyurethane elastomer, which comprises the following composition in parts by mass: 40 to 70 parts of thermoplastic polyurethane elastomer, 5 to 20 parts of flame retardant, and 2 parts by mass of antistatic agent ~10 parts, 2~5 parts of compatibilizers, 2~5 parts of plasticizers, 0.1~2 parts of antioxidants and 0.1~2 parts of lubricants; wherein, the mass ratio of the flame retardant is 3:2: The melamine salt of pentaerythritol phosphate, graphite and nanometer metal hydroxide of 5, described antistatic agent is the composite antistatic agent that oily monostearyl ester and ethoxylated amine form, described glycerin monostearyl ester and all The ethoxylated amine mass ratio is 4-7:3-6. Compared with the prior art, the thermoplastic polyurethane elastomer of the present invention has effectively improved flame retardancy and antistatic properties while the mechanical properties are not reduced. In addition, the invention also provides a preparation method of the antistatic flame retardant thermoplastic polyurethane elastomer.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an antistatic flame retardant thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a special polymer material between plastic and rubber. It has good elasticity, wear resistance, low temperature resistance, oil resistance and tensile strength. It is often used to make casters, wires and cables Sheaths, seals, synthetic leather, shock absorbers, etc., can replace rubber, and injection molding machines or extruders can be used for molding processing. The production process is clean, hygienic, environmentally friendly and pollution-free. [0003] However, TPU, like most other polymer materials, is flammable and drips easily, producing a lot of smoke. Moreover, the volume resistivity of thermoplastic polyurethane elastomers reaches 10 13 ~10 15 Ω.cm 2 , so the stati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L51/06C08L51/04C08K3/04C08K3/22C08K5/17C08K5/103C08K5/521C08K5/3492C08K5/11
CPCC08L75/04C08L2201/02C08L2201/04C08K2201/011C08K2003/2227C08K2003/2224C08L51/06C08L51/04C08K3/04C08K3/22C08K5/17C08K5/103C08K5/521C08K5/34928C08K5/11
Inventor 覃家通
Owner 东莞毅工工程塑料有限公司