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Paligorskite ethene-vinyl acetate composite flame-proof material

A vinyl acetate, composite flame retardant technology, applied in fire-resistant coatings and other directions, can solve the problems of high addition price, unfavorable promotion and application, etc., and achieve the effects of low cost, smoke suppression and toxic gas, and lasting effect.

Inactive Publication Date: 2007-09-05
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Europe, America and Japan, inorganic flame retardant materials have accounted for 50% to 64% of all flame retardant products, mainly Al(OH) 3 and Mg(OH) 2 It is a material for additives, but these additions are expensive, which is not conducive to popularization and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: The natural palygorskite is finely ground and crushed to 100-5000 mesh (particle size is 0.26-2.0um), and then the palygorskite powder and ammonium polyphosphate are mechanically blended at a ratio of 1:1 The method is fully mixed to obtain palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 45%, 55%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate Copolymer composites. Determination of its performance indicators are as follows:

[0021] The oxygen index can reach 28; the combustion performance is UL94-0.

Embodiment 2

[0022] Example 2: The natural palygorskite is finely ground and crushed to 100-5000 mesh (particle size is 0.26-2.0um), and then the palygorskite powder and pentaerythritol are mechanically mixed in a ratio of 1:1 to fully Mixed to obtain palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 45%, 55%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate Copolymer composites. Determination of its performance indicators are as follows:

[0023] The oxygen index can reach 28; the combustion performance is UL94-1

Embodiment 3

[0024] Embodiment 3: the natural palygorskite is crushed to 100~5000 orders (particle size is 0.26-2.0um) after fine selection, then the mixture of palygorskite powder and ammonium polyphosphate and pentaerythritol (ammonium polyphosphate and The ratio of pentaerythritol is 1:0.1) and the ratio of 1:2 is fully mixed by means of mechanical blending to obtain the palygorskite composite flame retardant. The palygorskite composite flame retardant obtained above is fully mixed with ethylene-vinyl acetate copolymer at a weight ratio of 40% and 60%, and injection-molded on an injection molding machine by a conventional injection molding process to obtain a flame-retardant ethylene-vinyl acetate copolymer. Copolymer composites. Determination of its performance indicators are as follows:

[0025] The oxygen index can reach 28, and the combustion performance is UL94-0

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PUM

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Abstract

The invention provides a composite flame-proof material of paligorskite ethane-vinyl acetate. Wherein, mechanical mixing the natural paligorskite powder of smashed 100-5000 items and polyphosphoric acid amine and / or pentaerythrite with given proportion to form composite flame-proof agent then, mixing and the refining said agent and ethane-vinyl acetate copolymer; the latter is one of most important ethene copolymer with well performance and wide application. The product has stable performance and well flame-proof effect and low cost, and accompanies with functions of flame-proof, smoke suppression and decreasing toxic gas.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a flame-retardant ethylene-vinyl acetate composite material, in particular to a flame-retardant ethylene-vinyl acetate composite material prepared by using palygorskite as a flame retardant. Background technique [0002] Palygorskite clay is a silicate clay mineral with palygorskite as the main component. Palygorskite minerals are generally in high alkalinity (PH=8±), appropriate salinity, certain temperature and medium SiO 2 、Al 2 o 3 MgO and MgO can only be produced in an environment with an appropriate ratio of the three components. At present, only a few countries or regions in the world produce such deposits. Due to the harsh formation conditions, they are scarce environmental mineral materials worldwide. It not only finds industrially significant deposits in only a few countries (regions) in the world. Moreover, it has many excellent physical and chemical propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K3/34C09K21/14
Inventor 雷自强管洁
Owner NORTHWEST NORMAL UNIVERSITY
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