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LDPE flame retardant composite material and preparation method thereof

A technology of low-density polyethylene and flame-retardant composite materials, which is applied in the field of flame-retardant materials and their preparation, and can solve problems such as poor thermal stability and mechanical properties of materials, low flame-retardant efficiency of intumescent flame retardants, and large combustion smoke , to achieve excellent thermal stability, high flame retardant efficiency, and small combustion smoke

Inactive Publication Date: 2012-11-21
KANGTAI PLASTIC SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used halogen-containing flame retardants have large combustion smoke and many molten droplets; while intumescent flame retardants have low flame retardant efficiency, large addition amount, poor thermal stability and material mechanical properties, and cannot meet actual needs.

Method used

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  • LDPE flame retardant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A low-density polyethylene flame-retardant composite material consisting of the following components by weight:

[0025] Linear low density polyethylene: 80 parts;

[0026] 20 parts of low-density polyethylene branched maleic anhydride;

[0027] 20 parts of melamine coated ammonium polyphosphate (MAPP);

[0028] 10 parts of pentaerythritol (PER);

[0029] 3 parts of organically modified montmorillonite (OMMT);

[0030] Nylon 6 (PA6) is 100 parts;

[0031] Antioxidant 168 2 parts.

[0032] And adopt following preparation method:

[0033] (1) Add nylon 6, linear low-density polyethylene, low-density polyethylene grafted maleic anhydride, and organically modified montmorillonite to a high-speed mixer, stir and mix for 5 minutes, and discharge the stirred mixture into twin-screw extrusion machine extrusion;

[0034] (2) melamine-coated ammonium polyphosphate and pentaerythritol are mixed in parts by weight;

[0035] (3) Mix the materials in steps (1) and (2), add an...

Embodiment 2

[0037] A low-density polyethylene flame-retardant composite material consisting of the following components by weight:

[0038] Linear low density polyethylene: 80 parts;

[0039] 20 parts of low-density polyethylene branched maleic anhydride;

[0040] 20 parts of melamine coated ammonium polyphosphate (MAPP);

[0041] 10 parts of pentaerythritol (PER);

[0042] 4 parts of sodium montmorillonite (Na-MMT);

[0043] Nylon 6 (PA6) is 95 parts;

[0044] Antioxidant 168 2 parts.

[0045] And adopt following preparation method:

[0046] (1) Add nylon 6, linear low-density polyethylene, low-density polyethylene grafted maleic anhydride, and sodium montmorillonite to a high-speed mixer, stir and mix for 10 minutes, and discharge the stirred mixture into a twin-screw extruder squeeze out

[0047] (2) melamine-coated ammonium polyphosphate and pentaerythritol are mixed in parts by weight;

[0048] (3) Mix the materials in steps (1) and (2), add antioxidant 168, extrude and granu...

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Abstract

The invention discloses LDPE (low density polyethylene) flame retardant composite material which is composed of following components by weight: 70 to 90 of linear LDPE, 10 to 20 of LDPE-g-MAH (maleic anhydride grafted low density polyethylene), 10 to 30 of melamine resin coated ammonium polyphosphate, 5 to 15 of pentaerythrite, 1 to 5 of montmorillonite, 660 to 110 of nylon and 1 to 4 of antioxidising agent. The invention further provides a preparation method of the LDPE flame retardant composite material. The flame retardant composite material prepared by the preparation method overcomes thedefects of large combustion smog and more molten drops of halogenated flame retardant, low flame retardant efficiency, large additive amount and poor thermal stability and mechanical properties of materials of expanding type flame retardant. When the flame retardant property of the composite material is improved, the additive amount of the flame retardant is reduced, the mechanical properties of composite material are improved, and the requirement of practical application is satisfied.

Description

technical field [0001] The invention relates to a flame-retardant material and a preparation method thereof, in particular to a low-density polyethylene flame-retardant composite material and a preparation method thereof. Background technique [0002] Flame retardant material is a kind of protective material. It is a material that can prevent burning but is not easy to burn. There are solid materials such as cement, steel, glass and other materials; there are liquid materials, also referred to as flame retardants. If the flame retardant is coated on the surface of various materials such as body, it can ensure that it will not be burned in the event of a fire, and it will not aggravate and expand the burning range. At present, the commonly used halogen-containing flame retardants have large combustion smoke and many molten droplets; while intumescent flame retardants have low flame retardant efficiency, large addition amount, poor thermal stability and material mechanical pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L51/06C08L77/02C08K13/06C08K9/10C08K3/32C08K5/053C08K3/34B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 林云青张文霖郝洪波
Owner KANGTAI PLASTIC SCI & TECH GRP
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