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Composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and preparation method thereof

A modification technology of vinyl acetate and zinc oxide, which is applied in chemical instruments and methods, treatment of dyed organosilicon compounds, fibrous fillers, etc., can solve problems such as failure to meet practical application requirements, and decrease in mechanical properties of polymer systems, and achieve Good application prospects, remarkable flame retardant effect, and convenient source

Inactive Publication Date: 2010-12-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this time, the mechanical properties of the polymer system are severely reduced, which cannot meet the needs of practical applications.

Method used

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  • Composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and preparation method thereof
  • Composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and preparation method thereof
  • Composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Mix 100 grams of magnesium hydroxide powder, 10 grams of γ-aminopropyltriethoxysilane coupling agent and 200 grams of water, and cut at 8000 r / min for 20 minutes at room temperature to obtain an emulsion; The neck flask was heated and stirred slowly, 16 grams of boric acid and 7.5 grams of zinc oxide were added, and the reaction was continued with heating and stirring at a temperature of 90° C., the stirring reaction time was 5 hours, and the stirring speed was 5000 rpm. Cool to room temperature, filter, wash with water, dry, crush, and sieve to obtain boric acid-zinc oxide modified magnesium hydroxide powder with a yield of 94%;

[0033] Take 44.1 grams of boric acid-zinc oxide modified magnesium hydroxide powder, 7 grams of EVA-D4085 compatibilizer and 18.9 grams of ethylene-vinyl acetate copolymer pellets, and mix them evenly in an internal mixer at a temperature of 150 ° C. Obtain 70 grams of boric acid-zinc oxide modified magnesium hydroxide flame-retardant ethylene...

Embodiment 2

[0038] Mix 100 grams of magnesium hydroxide powder, 10 grams of γ-aminopropyltrimethoxysilane coupling agent and 200 grams of water, and cut at 8000r / min for 20 minutes at room temperature to obtain an emulsion; then transfer the above emulsion to a three-neck The flask was heated and stirred slowly, 29 grams of boric acid and 7.5 grams of zinc oxide were added, and the reaction was continued with heating and stirring at a temperature of 80° C., the stirring reaction time was 6 hours, and the stirring speed was 4000 rpm. Cool to room temperature, filter, wash with water, dry, crush, and sieve to obtain boric acid-zinc oxide modified magnesium hydroxide powder with a yield of 91%;

[0039] Take 44.1 grams of boric acid-zinc oxide modified magnesium hydroxide powder, 7 grams of EVA-D4085 compatibilizer and 18.9 grams of ethylene-vinyl acetate copolymer pellets, and mix them evenly in an internal mixer at a temperature of 150 ° C. Obtain 70 grams of boric acid-zinc oxide modified...

Embodiment 3

[0042] Mix 100 grams of magnesium hydroxide powder, 10 grams of γ-aminopropyltriethoxysilane coupling agent and 200 grams of water, and cut at 8000 r / min for 20 minutes at room temperature to obtain an emulsion; The neck flask was heated and stirred slowly, 23.4 grams of boric acid and 7.5 grams of zinc oxide were added, and the reaction was continued with heating and stirring at a temperature of 70° C., the stirring reaction time was 7 hours, and the stirring speed was 4000 rpm. Cool to room temperature, filter, wash with water, dry, crush, and sieve to obtain boric acid-zinc oxide modified magnesium hydroxide powder with a yield of 94%;

[0043] Take 44.1 grams of boric acid-zinc oxide modified magnesium hydroxide powder, 7 grams of EVA-D4085 compatibilizer and 18.9 grams of ethylene-vinyl acetate copolymer pellets, and mix them evenly in an internal mixer at a temperature of 150 ° C. Obtain 70 grams of boric acid-zinc oxide modified magnesium hydroxide flame-retardant ethyl...

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Abstract

The invention relates to a composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and a preparation method thereof. The composite material comprises the following components: 25wt%-33wt% of ethylene-vinyl acetate copolymer granules, 55wt%-65wt% of boric acid-zinc oxide modified magnesium hydroxide powder and 2wt%-12wt% of EVA-D4085 compatilizer. The preparation method comprises the following steps: shearing the magnesium hydroxide powder, an amino-containing silane coupling agent and water at room temperature in high speed, adding boric acid and zinc oxide to the obtained mixture, heating to 60-100 DEG C and reacting with stirring to obtain the boric acid-zinc oxide modified magnesium hydroxide powder; and evenly mixing the modified magnesium hydroxide, the ethylene-vinyl acetate copolymer granules and the EVA-D4085 compatilizer to obtain the needed composite material. The obtained composite material has obvious flame-retardant effect, good mechanical property, simple preparation process and low cost, thus being beneficial to realizing industrial production.

Description

technical field [0001] The invention belongs to the field of magnesium hydroxide flame-retardant ethylene-vinyl acetate copolymer and a preparation method thereof, in particular to a boric acid-zinc oxide modified magnesium hydroxide flame-retardant ethylene-vinyl acetate copolymer and a preparation method thereof. Background technique [0002] With the continuous progress and development of science and technology, the three major synthetic materials (synthetic plastics, synthetic rubber and synthetic fibers) have been developed rapidly, and the application of the three major synthetic materials is often in the form of composite materials, which is mainly due to the combination of composite materials. Excellent performance, designability and easy processing. It has been widely used in various fields of national economy. [0003] As we all know, the three major synthetic materials are organic polymer compounds with high carbon, hydrogen and oxygen content. They are relativel...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K9/06C08K9/02C08K3/22C09C1/02C09C3/12C09C3/06
Inventor 虞鑫海霍蛟龙赵炯心
Owner DONGHUA UNIV
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