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Superfine magnesium hydrate polyethylene fire retardant composite material and preparation process thereof

A technology of ultra-fine magnesium hydroxide and flame-retardant composite materials, which is applied in the direction of fire-resistant coatings, etc., can solve the problems of the decline of mechanical properties of flame-retardant composite materials, the deterioration of mechanical properties and physical and mechanical properties, such as impact strength and elongation, and achieve high Economic and social benefits, environmental friendliness, and low formula cost

Active Publication Date: 2008-10-15
广州市啊啦棒高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, when the content of inorganic flame retardants increases, the mechanical properties of flame-retardant composites will decrease, such as Mg(OH) in PE 2 When the content reaches 65%, its mechanical properties and physical and mechanical properties, especially impact strength and elongation are significantly deteriorated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Prepare raw materials according to the components in parts by weight of the flame retardant composite material embodiment;

[0032] (2) Add all PE and additives zinc borate, triester phosphate and the required amount of 60% Mg(OH) 2 Add it to the mixer and knead for 4 minutes, wherein the screw temperature is 110 degrees Celsius, and the charging rate is 87%;

[0033] (3) Add the remaining Mg(OH) according to the charging rate of 87% 2 Mixing and kneading with acetone for 100s can produce the flame-retardant composite material of the present invention.

Embodiment 2

[0035] (1) Prepare raw materials according to the components in parts by weight of the flame retardant composite material embodiment;

[0036] (2) Add all PE and additives zinc borate, triester phosphate and the required amount of 60% Mg(OH) 2 Add it to the mixer and knead for 4 minutes, wherein the screw temperature is 150 degrees Celsius, and the charging rate is 93%;

[0037] (3) Add the remaining Mg(OH) according to the charging rate of 93% 2 Mix and knead with acetone for 130s.

Embodiment 3

[0039] (1) Prepare raw materials according to the components in parts by weight of the flame retardant composite material embodiment;

[0040] (2) Add all PE and additives zinc borate, triester phosphate and the required amount of 60% Mg(OH) 2 Add it to the mixer and knead for 4 minutes, wherein the screw temperature is 130 degrees Celsius, and the charging rate is 90%;

[0041] (3) Add the remaining Mg(OH) according to the charging rate of 90% 2 Mix and knead with acetone for 120s.

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Abstract

The invention relates to a superfine magnesium hydroxide polyethylene fire resistant composite material, which consists of following compositions by weight portion: 20 to 50 portions of polyethylene matrixes, 60 to 80 portions of surface modification superfine magnesium hydroxides, 1 to 3 portions of zinc borate, 5 to 10 portions of tertiary phosphate and 0.1 to 0.5 portions of acetone, wherein, the grain diameter of the magnesium hydroxides is 15 micrometers; the surface modifier is silane coupling agent; and the mass ratio of the silane coupling agent and the superfine magnesium hydroxides is 0.5 to 1.5 percent. The superfine magnesium hydroxide polyethylene fire resistant composite material has the advantages of smoke suppression, low toxicity, halogen free without Sb2O3, friendly environment, low formulation cost and high economic benefit and social benefit.

Description

technical field [0001] The invention relates to a flame retardant composite material containing an inorganic flame retardant, especially an ultrafine magnesium hydroxide (Mg(OH) 2 ) and polyethylene (PE) as the main flame retardant composite material. The invention also relates to the preparation process of the material. Background technique [0002] Inorganic flame retardants are commonly used in flame-retardant composite materials. Commonly used inorganic flame retardants include magnesium hydroxide and aluminum hydroxide. Large (≥70%), such as Mg(OH) 2 Flame-retardant PE, in order to make the material reach the UL 94V-0 flame-retardant grade (3.3mm sample), Mg(OH) in the flame-retardant composite material 2 The content should be ≥ 60%, such as using Mg(OH) 2 To suppress smoke, the content can be lower, containing 40% Mg(OH) 2 The smoke density of PE is only about 1 / 3 of that of non-flame retardant PE, and other flame retardants need to be added. But on the other han...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/07C09K21/14C08K3/22C08K3/32C08K3/38
Inventor 朱金元李勇
Owner 广州市啊啦棒高分子材料有限公司
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