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A kind of preparation method of sodalite-red phosphorus synergistic flame retardant

A technology of synergistic flame retardant and sodalite, applied in the field of flame retardants, can solve the problems of complex preparation process, limited use, easy explosion, etc., and achieve simple preparation process, improved compatibility, improved mechanical properties and thermal stability Effect

Active Publication Date: 2018-07-06
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 15g of sodalite with a median particle size of 300nm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60 °C for 150 min, filtered, washed, and dried, and placed in a quartz tube reactor. After passing hydrogen for 90 min at 450 °C, phosphine was passed at 440 °C for 10 h. After cooling, the The sample was heated to 290°C in a reaction vessel isolated from air, and kept for 60 minutes to obtain a flame retardant loaded with red phosphorus in the sodalite pores with a red phosphorus content of 30%. The flame retardant was mixed with polyethylene. The oxygen index was 32.9.

Embodiment 2

[0024] Mix 15g of sodalite with a median particle size of 800nm ​​and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60 °C for 30 min, filtered, washed and dried, and then placed in a quartz tube reactor. After passing hydrogen for 20 min at 400 °C, phosphine was passed at 410 °C for 2 h. After cooling, the The sample was heated to 260 ℃ in a reaction vessel isolated from air, and kept for 10 minutes to obtain a flame retardant loaded with red phosphorus in the sodalite pores with a red phosphorus content of 4%. The flame retardant was mixed with polyethylene. The oxygen index is 27.2.

Embodiment 3

[0026] Mix 15g of sodalite with a median particle size of 550nm and 500mL of 0.1mol / L NiCl 2 The solutions were mixed, stirred at 60 °C for 90 min, filtered, washed, and dried, and placed in a quartz tube reactor. After passing hydrogen for 55 min at 425 °C, phosphine was passed at 425 °C for 6 h. After cooling, the The sample was heated to 275°C in a reaction vessel isolated from air, and kept for 35 minutes to obtain a flame retardant loaded with red phosphorus in the sodalite pores with a red phosphorus content of 19%. The flame retardant was mixed with polyethylene. The oxygen index is 30.5.

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Abstract

The invention relates to a preparation method of a sodalite-red phosphorus synergistic flame retardant. In the method, sodalite is mixed with a certain amount of 0.1mol / L NiCl2 solution, ion-exchanged at 60°C for 30-150min, and then filtered , washed, dried, and then placed in a quartz tube reactor, hydrogen was introduced at 400-450°C for 20-90min, and then phosphine was introduced at 410-440°C for 2-10h, and finally the sample was placed in an air-isolated The reaction vessel is heated and kept at 260-290° C. for 10-60 minutes to obtain a sodalite-red phosphorus synergistic flame retardant loaded with 4-30% (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 particularly relates to a preparation method of a sodalite-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 retardants 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 go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/12C08K3/02C08L23/06
CPCC08K3/02C08K9/12C08K2003/026C08L2201/02C08L2201/08C08L23/06
Inventor 徐会君李伟志于华芹杜庆洋
Owner SHANDONG UNIV OF TECH
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