Preparation method of chabazite-red phosphorus synergistic flame retardant

A technology of synergistic flame retardant and chabazite, applied in the field of flame retardants, can solve problems such as easy explosion, restricted use, complicated preparation process, etc., and achieve the effects of improving mechanical properties and thermal stability, improving compatibility, and simple preparation process

Active Publication Date: 2018-07-17
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when red phosphorus is used, there are the following problems: flammable, explosive, and long-term contact with air will release highly toxic pH 3 Gas; itself is red, easy to color the product; easy to absorb water, poor compatibility with polymers
Although the flame retardant effect of red phosphorus microcapsules is good, its preparation process is relatively complicated, and the particle size of the flame retardant is not easy to control, which limits its wide use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 20g of chabazite with a median particle size of 0.4μm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60°C for 120min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 450°C for 90min, phosphine was introduced at 440°C, and reacted for 10h. After cooling, the The sample was heated to 290°C in an air-isolated reaction vessel and kept for 60 minutes to obtain a flame retardant loaded with red phosphorus in the channels of chabazite with a red phosphorus content of 32%. The flame retardant material prepared by mixing the flame retardant with polyethylene The oxygen index is 33.3.

Embodiment 2

[0024] Mix 20g of chabazite with a median particle size of 0.8μm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60°C for 30min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 400°C for 30min, phosphine was passed at 410°C, reacted for 2h, and after cooling, the The sample was heated to 260°C in an air-isolated reaction vessel and kept for 10 minutes to obtain a flame retardant loaded with red phosphorus in the channels of chabazite with a red phosphorus content of 4%. The flame retardant material prepared by mixing the flame retardant with polyethylene The oxygen index is 28.6.

Embodiment 3

[0026] Mix 20g of chabazite with a median particle size of 0.6μm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60°C for 75min, filtered, washed and dried, placed in a quartz tube reactor, hydrogen gas was introduced at 425°C for 60min, phosphine was passed at 425°C, reacted for 6h, and after cooling, the The sample was heated to 275°C in an air-isolated reaction vessel and kept for 35 minutes to obtain a flame retardant loaded with red phosphorus in the channels of chabazite with a red phosphorus content of 16%. The flame retardant material was prepared by mixing the flame retardant with polyethylene. The oxygen index was 31.0.

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PUM

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Abstract

The invention relates to a method for preparing a chabazite-red phosphorus synergistic flame retardant. In the method, the chabazite is mixed with a certain amount of 0.1mol / L NiCl2 solution, ion-exchanged at 60°C for 30-120min, and then filtered and washed , dried, and then placed in a quartz tube reactor, hydrogen was introduced at 400-450°C for 30-90min, and then phosphine was passed at 410-440°C for 2-10h, and finally the sample was placed in an air-insulated reaction vessel Heating at 260-290°C for 10-60min to obtain a chabazite-red phosphorus synergistic flame retardant loaded with 4-32% (mass ratio) red phosphorus in the channels. The preparation process of the invention is relatively simple, which solves the shortcomings of using the red phosphorus flame retardant alone, and the prepared flame retardant has good flame retardant performance.

Description

technical field [0001] The invention belongs to the technical field of flame retardants, and in particular relates to a preparation method of a chabazite-red phosphorus synergistic flame retardant. Background technique [0002] With the enhancement of people's awareness of health and environmental protection, it has become an inevitable trend in the flame retardant industry to seek environmentally friendly, low-toxicity, high-efficiency, and multi-functional flame retardants. New flame retardant technologies such as ultra-fine technology, microencapsulation technology, compounding technology, and cross-linking technology are constantly developing. [0003] In modern flame retardant technology, the compounding of flame retardant is an extremely important aspect. Compounding is to use the interaction between flame retardants to improve the flame retardant performance, that is, the synergistic effect of flame retardants. The flame retardant system with synergistic effect has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K9/12C08K3/02C08K3/34
CPCC08K3/02C08K3/34C08K9/12C08K2003/026C08K2201/003C08L23/06
Inventor 徐会君李森王清涛杜庆洋
Owner SHANDONG UNIV OF TECH
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