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A kind of halogen-free flame-retardant thermoplastic polyurethane elastomer sheath material and its preparation and application

A thermoplastic polyurethane and elastomer technology, used in conductors, insulated conductors, electrical components, etc., can solve the problems of narrow processing temperature and high price, and achieve the effect of wide extrusion processing temperature and strong physical and mechanical properties

Inactive Publication Date: 2011-12-28
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermoplastic polyurethane elastomers also have some shortcomings, such as too narrow processing temperature, high price, and the oxygen index of polyurethane elastomer itself is only 18, which is a flammable material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Polyurethane, halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent, have the formula shown in Table 1, and the properties are shown in Table 2.

[0027] Table 1

[0028] raw material name

parts by weight

Polyurethane WHT-7185

60

trihydroxyhexyl cyanurate

15

Zinc borate

15

Acrylonitrile-styrene-butadiene copolymer

10

Magnesium stearate

0.2

Antioxidant KY-1076

0.2

UV-531

0.2

[0029] Preparation method: use polyurethane base material, add halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent according to weight ratio, mix evenly, and extrude through twin-screw out of granulation. The temperature setting of the twin-screw extruder is: 140±5°C in barrel I zone, 150±5°C in barrel II zone, 160±5°C ...

Embodiment 2

[0033] Polyurethane, halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent, have the formula shown in Table 3, and the properties are shown in Table 4.

[0034] table 3

[0035] raw material name

parts by weight

Polyurethane WHT-7185

55

FR-600

15

Zinc borate

15

Acrylonitrile-styrene-butadiene copolymer

15

Magnesium stearate

0.2

KY-1076

0.2

UV-531

0.2

[0036] Preparation method: use polyurethane base material, add halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent according to weight ratio, mix evenly, and extrude through twin-screw out of granulation. The temperature setting of the twin-screw extruder is: 140±5°C in barrel I zone, 150±5°C in barrel II zone, 160±5°C in barrel III zone, 155±5°C i...

Embodiment 3

[0040] Polyurethane, halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent, have the formula shown in Table 5, and the properties are shown in Table 6.

[0041] table 5

[0042] raw material name

parts by weight

Polyurethane WHT-7185

60

FR-600

20

magnesium hydroxide

10

Ethylene acrylic acid copolymer

10

Zinc stearate

0.2

KY-1076

0.2

UV-531

0.2

[0043] Preparation method: use polyurethane base material, add halogen-free flame retardant, halogen-free smoke suppressant, processing modifier, processing aid, antioxidant and anti-ultraviolet agent according to weight ratio, mix evenly, and extrude through twin-screw out of granulation. The temperature setting of the twin-screw extruder is: 140±5°C in barrel I zone, 150±5°C in barrel II zone, 160±5°C in barrel III zone, 155±5°C in barre...

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PUM

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Abstract

The invention discloses a zero-halogen flame-retardant thermoplastic polyurethane elastomer sheath material and a preparation method thereof. The zero-halogen flame-retardant thermoplastic polyurethane elastomer sheath material is prepared from the following raw material components in parts by weight: 50-80 parts of polyurethane, 10-30 parts of zero-halogen flame retardant, 10-20 parts of zero-halogen smoke suppressant, 5-20 parts of processing modifier, 0.2+ / -0.05 part of processing auxiliary agent, 0.2+ / -0.05 part of antioxidant and 0.2+ / -0.05 part of ultraviolet resistant. Compared with the prior art, the zero-halogen flame-retardant thermoplastic polyurethane elastomer sheath material prepared by the invention has the advantages of wider processing temperature range, ultrahigh physical and mechanical properties and flame retardant property of UL-94 and V-0 level.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant thermoplastic polyurethane elastomer sheath material and its preparation and application. Background technique [0002] Thermoplastic polyurethane elastomers have been in existence for decades, and have developed rapidly in recent years. The performance of thermoplastic polyurethane elastomers is very superior, and they have sufficient resistance to oxygen, ozone and radiation, etc., and have high tensile strength. And elongation at break, as well as good abrasion resistance, oil resistance and cold resistance, these properties make thermoplastic polyurethane elastomers a place for cable materials in some demanding environments. However, thermoplastic polyurethane elastomers also have some shortcomings, such as too narrow processing temperature, high price, and the oxygen index of polyurethane elastomer itself is only 18, which is a flammable material. Due to the particularity of this industry, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/02B29B9/06H01B7/295
Inventor 陈进明汪晓明
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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