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Paligorskite composite combustion inhibitor

A compound flame retardant and palygorskite technology, applied in the field of flame retardants and additives, 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: 2006-02-22
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

[0016] 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:

[0017] The oxygen index can reach 28; the combustion performance is UL94-0.

Embodiment 2

[0018] 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:

[0019] The oxygen index can reach 28; the combustion performance is UL94-1.

Embodiment 3

[0020] Embodiment 3: After the natural palygorskite is selected and crushed to 100-5000 mesh (particle size is 0.26-2.0um), 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:

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

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Abstract

The invention provides a paligorskite composite fire-retarding agent, which is made by mechanically blending with paligorskite powder of 100-5000 mesh, polyphosphoric acids, and pentaerythrite according to definite proportion, paligorskite is aqueous magnesite-alumina silicate mineral, extensive used in industry field because of good physicochemistry property. Because of microporous structure, the paligorskite has strong adsorption to gas, heat insulation and thermal insulation, blocking-up heat transfer, meantime, it can be used in heat insulation material of electric appliance, especially commercial electric appliance because of the good property of water uptake and water-retaining.

Description

technical field [0001] The invention relates to an additive, in particular to a flame retardant, in particular to a palygorskite composite 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 properties and industrial uses, and has extremely high economic value. my country's palygorskite reserves account for more than 95% of the world's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/04
Inventor 雷自强管洁
Owner NORTHWEST NORMAL UNIVERSITY
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