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Halogen-free and flame-retardant heat-shrinkable material and preparation method thereof

A high flame retardant and heat shrinkable technology, used in the field of heat shrinkable sleeve materials, can solve the problem of high shrinkage temperature and achieve the effect of low shrinkage temperature

Inactive Publication Date: 2017-09-08
华娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the existing halogen-free high flame-retardant heat-shrinkable material has a high shrinkage temperature and cannot meet the needs of some low-temperature occasions, the present invention provides a halogen-free high flame-retardant heat-shrinkable material and a preparation method thereof. Through the synergistic effect between alkali metal silicate and melamine complex, the two act on polyolefin resin, so that the prepared halogen-free high flame-retardant heat-shrinkable material has good mechanical properties and flame-retardant properties at the same time , with a lower shrinkage temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a halogen-free high flame-retardant heat-shrinkable material, which is composed of the following components in parts by weight: 100 parts of polyolefin resin; 25 parts of ethylene-vinyl acetate rubber 16 parts of alkali metal silicate; 8 parts of melamine complex; 37 parts of smoke suppressant MoO; 6 parts of phosphorus flame retardant; 0.5 part of antioxidant; 1 part of plastic processing lubricant.

[0025] Its preparation method is:

[0026] After mixing polyolefin resin and ethylene-vinyl acetate rubber, add alkali metal silicate and melamine complex and mix evenly. Smoke suppressant MoO 3 , phosphorus-based flame retardant, antioxidant and plastic processing lubricant are pre-mixed and then added to the above mixture to continue mixing. After mixing evenly, let stand at 140°C for 2-3 hours to obtain halogen-free high flame-retardant heat shrinkable Material.

[0027] The prepared halogen-free high flame-retardant heat-shrinkable material ...

Embodiment 2

[0029] This embodiment provides a halogen-free high flame-retardant heat-shrinkable material, which is composed of the following components in parts by weight: 100 parts of polyolefin resin; 20 parts of ethylene-vinyl acetate rubber 10 parts of alkali metal silicate; 5 parts of melamine complex; smoke suppressant MoO 3 5 parts; phosphorus flame retardant 2 parts; antioxidant 0.3 parts; plastic processing lubricant 0.5 parts.

[0030] Its preparation method is:

[0031] After mixing polyolefin resin and ethylene-vinyl acetate rubber, add alkali metal silicate and melamine complex and mix evenly. Smoke suppressant MoO 3 , phosphorus flame retardant, antioxidant and plastic processing lubricant are pre-mixed and then added to the above mixture to continue mixing. After mixing evenly, let stand at 120°C for 2-3 hours to obtain halogen-free high flame retardant heat shrinkable Material.

[0032] The prepared halogen-free high flame-retardant heat-shrinkable material has an elong...

Embodiment 3

[0034] This embodiment provides a halogen-free high flame-retardant heat-shrinkable material, which is composed of the following components in parts by weight: 100 parts of polyolefin resin; 30 parts of ethylene-vinyl acetate rubber parts; 20 parts of alkali metal silicate; 10 parts of melamine complex; smoke suppressant MoO 3 10 parts; 10 parts of phosphorus flame retardant; 1.0 parts of antioxidant; 1.5 parts of plastic processing lubricant.

[0035] Its preparation method is:

[0036] After mixing polyolefin resin and ethylene-vinyl acetate rubber, add alkali metal silicate and melamine complex and mix evenly. Smoke suppressant MoO 3 , phosphorus-based flame retardant, antioxidant and plastic processing lubricant are pre-mixed and then added to the above mixture to continue mixing. After mixing evenly, let stand at 150°C for 2-3 hours to obtain halogen-free high flame-retardant heat shrinkable Material.

[0037] The prepared halogen-free high flame-retardant heat-shrinka...

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Abstract

The invention discloses a halogen-free and flame-retardant heat-shrinkable material and a preparation method thereof. The halogen-free and flame-retardant heat-shrinkable material is prepared from the following components in parts by weight: 100 parts of polyolefin resin, 20 to 30 parts of ethylene-vinyl acetate rubber, 10 to 20 parts of alkali metal silicate, 5 to 10 parts of melamine complex, 5 to 10 parts of a smoke suppressor MoO3, 2 to 10 parts of a phosphorus-based flame retardant, 0.3 to 1 part of an antioxidant and 0.5 to 1.5 parts of a plastic processing lubricant. The invention provides the halogen-free and flame-retardant heat-shrinkable material; the alkali metal silicate and the melamine complex cooperatively act on the polyolefin resin, so that the halogen-free and flame-retardant heat-shrinkable material has good mechanical property and flame retardant property as well as lower shrinkage temperature.

Description

technical field [0001] The invention relates to a heat-shrinkable sleeve material, in particular to a halogen-free high flame-retardant heat-shrinkable material and a preparation method thereof. Background technique [0002] Conventional halogen-free plastic materials and heat-shrinkable materials for marking pipes affect the flame retardancy of pipes due to factors such as ensuring mechanical properties and thermodynamic properties. In the formula with more flame retardants, the mechanical properties often meet the standards but the flame retardancy It can't pass the VW-1 test, and it's hard to balance the two. [0003] CN 103524857A discloses a halogen-free high flame-retardant heat-shrinkable material for marking pipes, which consists of the following components in parts by weight: 100 parts of polyolefin resin; 40-70 parts of magnesium hydroxide; 5-70 parts of red phosphorus masterbatch 15 parts; phosphorus flame retardant 2-10 parts; antioxidant 0.3-1.0 parts; plastic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/34C08K5/3492C08K3/22
CPCC08L23/06C08K2003/2255C08L2201/02C08L2201/22C08L2205/025C08L2205/03C08L23/0853C08K13/02C08K3/34C08K5/0091C08K3/22
Inventor 华娜
Owner 华娜
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