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Halogen-free flame-retardant smoke-suppressing thermoplastic polyurethane elastomer cable material and preparation method thereof

A technology of thermoplastic polyurethane and plastic polyurethane, which is applied in the field of halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable materials and its preparation, to achieve the effects of low smoke generation, excellent mechanical properties, and excellent flame-retardant properties

Active Publication Date: 2015-04-01
ANGREEN DONGGUAN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the use of graphene-loaded smoke suppressant and nitrogen-phosphorus flame retardants to compound flame-retardant and smoke-suppressing thermoplastic polyurethane elastomers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1, In terms of percentage by weight, 70.8% of thermoplastic polyester polyurethane elastomer is added with 1% of graphene-loaded zinc hydroxystannate, and then mixed in an internal mixer until uniform, the mixing temperature is 160 ° C, and then Add 28% of silicone gel microencapsulated ammonium polyphosphate, 0.1% of antioxidant S4P and 0.1% of zinc stearate for mixing, after mixing evenly, granulate at 160°C to form halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastic body cable material.

[0031] The test results show that the tensile strength of the halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material prepared in this example is 35.5 MPa, the elongation at break is 680%, the oxygen index is 29.5%, and the vertical burning test passes UL-94 V0 level, smoke density is 210.

Embodiment 2

[0032] Example 2, In terms of weight percentage, add 3% graphene-loaded zinc stannate to 85% thermoplastic polyether polyurethane elastomer, and then knead in the extruder until uniform. The mixing temperature is 190 ° C, and then add 10% silicone gel microencapsulated ammonium polyphosphate, 1% antioxidant 1010 and 1% PE wax are mixed, mixed evenly, and then granulated at 190°C to form a halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material .

[0033] The test results show that the tensile strength of the halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material prepared in this example is 25.8 MPa, the elongation at break is 610%, the oxygen index is 32.5%, and the vertical burning test passes UL-94 V0 level, smoke density is 150.

Embodiment 3

[0034] Example 3,Add 2% graphene-loaded zinc stannate and 2% graphene-loaded zinc stannate to a mixture of 25% thermoplastic polyester polyurethane elastomer and 50% thermoplastic polyether polyurethane elastomer by weight percentage The mixture is then kneaded in the extruder until uniform, the kneading temperature is 170°C, followed by adding 10% cellulose microencapsulated ammonium polyphosphate, 0.4% antioxidant 300 and 0.6% paraffin wax Mix and granulate at 170°C after mixing evenly to form a halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material.

[0035] The test results show that the tensile strength of the halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material prepared in this example is 29.8 MPa, the elongation at break is 630%, the oxygen index is 35.5%, and the vertical burning test passes UL-94 V0 level, smoke density is 200.

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Abstract

The invention belongs to the technical filed of thermoplastic polyurethane elastomer materials, and particularly relates to a halogen-free flame-retardant smoke-suppressing thermoplastic polyurethane elastomer cable material which comprises the following components in percentage by weight: 70-85% of thermoplastic polyurethane elastomer, 10-28% of halogen-free nitrogen and phosphorus flame retardant, 1-5% of smoke suppressor, 0.1-1% of antioxidant and 0.1-1% of lubricant. The halogen-free flame-retardant smoke-suppressing thermoplastic polyurethane elastomer cable material prepared by the invention produces a small amount of smoke in the combustion process, has excellent flame retardancy and excellent mechanical property, and can be used as a low-smoke halogen-free flame-retardant cable coating material. Besides, the invention also discloses a preparation method of the halogen-free flame-retardant smoke-suppressing thermoplastic polyurethane elastomer cable material.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polyurethane elastomer materials, and in particular relates to a halogen-free flame-retardant and smoke-suppressing thermoplastic polyurethane elastomer cable material and a preparation method thereof. Background technique [0002] Cable is an indispensable basic equipment for transmitting electric energy, transmitting information, manufacturing various motors, instruments, and meters, and realizing electromagnetic energy conversion. However, traditional PVC cables are prone to fire and combustion due to aging during use, causing fires and producing a large amount of toxic and corrosive fumes. Therefore, low-smoke, halogen-free and flame-retardant wire and cable materials must be selected to reduce the risk of fire, reduce the occurrence of fire, and protect the safety of people's lives and property. [0003] Thermoplastic polyurethane elastomer has good comprehensive physical properties, f...

Claims

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Application Information

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IPC IPC(8): C08L75/06C08L75/08C08K13/06C08K9/10C08K3/32C08K9/12C08K3/24
Inventor 吴瑞影
Owner ANGREEN DONGGUAN NEW MATERIALS TECH
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