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Preparation method for non-halogen fire retardant containing phosphorus and molybdenum

A flame retardant, non-halogen technology, applied in the field of preparation of phosphorus and molybdenum-containing non-halogen flame retardants, can solve problems such as inability to use directly

Active Publication Date: 2013-09-11
GUANGXI XINJING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyaluminum phosphate is highly acidic and cannot be directly used in most synthetic polymer materials

Method used

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  • Preparation method for non-halogen fire retardant containing phosphorus and molybdenum
  • Preparation method for non-halogen fire retardant containing phosphorus and molybdenum
  • Preparation method for non-halogen fire retardant containing phosphorus and molybdenum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add water to the stirring paddle in the reaction kettle, add 5 kg of zinc molybdate, 20 kg of magnesium hydroxide and 3 kg of silicon dioxide successively under stirring at room temperature. After 30 minutes, the temperature dropped to 15°C, added 122 kg of aluminum tripolyphosphate, and continued to stir for 30 minutes. After the material was centrifuged and dehydrated, it was directly added to the dispersing tank before drying, with 0.15 kg of dilute alcohol diluted with 1:1. Vinyl tris(b-methoxyethoxy)silane is modified, and then crushed, weighed and packaged to form a product.

Embodiment 2

[0023] Add water to the stirring paddle into the reaction kettle, heat to 80°C, then add 30 kg of zinc molybdate, 15 kg of magnesium hydroxide and 10 kg of silicon dioxide in sequence under stirring. When the temperature drops to 55°C, add 95 kg of aluminum tripolyphosphate and continue to stir for 30 minutes. After the material is centrifuged and dehydrated, directly add 0.75 kg of γ-ammonia diluted with 1:1 ethanol to the dispersion tank before drying. Propyltriethoxysilane is modified, and then crushed, weighed and packaged to form a product.

Embodiment 3

[0025] Add water to the stirring paddle in the reaction kettle, after heating to 55°C, add 15 kg of zinc molybdate, 45 kg of magnesium hydroxide and 15 kg of silicon dioxide successively under stirring. When the temperature drops to 30°C, add 75 kg of aluminum tripolyphosphate and continue to stir for 30 minutes. After the material is centrifuged and dehydrated, directly add 0.35 kg of vinyl trimethyl phosphate diluted with 1:1 ethanol to the dispersion tank before drying. Oxysilane is modified, and then crushed, weighed and packaged to form a product.

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Abstract

The invention provides a preparation of a non-halogen fire retardant containing phosphorus and molybdenum by polymeric aluminum phosphate, zinc molybdate and hydroxides which are used as main raw materials. The fire retardant comprises the following raw materials, in parts by weight: 50 to 90 of polymeric aluminum phosphate, 3 to 20 of zinc molybdate, 5 to 30 of hydroxides, 1 to 10 of silicon dioxide, and 0.1 to 0.5 of a coupling agent. The preparation method comprises: (1) after adding a certain amount of water into a reaction kettle, under a stirring condition, successively adding zinc molybdate, the hydroxides and silicon dioxide into the reaction kettle, and carrying out a reaction with stirring; (2) adding polymeric aluminum phosphate into the above materials, and fully stirring; and (3) after centrifugal dewatering, adding the coupling agent for processing during drying process, then crushing, weighing, packaging to obtain the product. The non-halogen fire retardant has the characteristics of environmental protection and high efficiency, and can be used in fire retardance of paints and engineering plastics.

Description

Technical field: [0001] The invention relates to a method for preparing a flame retardant, specifically a method for preparing a non-halogen flame retardant containing phosphorus and molybdenum. The flame retardant has the characteristics of environmental protection and high efficiency, and can be used in flame retardant of coatings and engineering plastics . Background technique: [0002] Synthetic polymer materials have unique physical and chemical properties and are easy to process and shape. They have now entered all aspects of daily life. Toxic gases etc. Adding flame retardants to synthetic polymer materials can effectively improve their fire resistance and reduce smoke generation. Flame retardants can be divided into halogen, phosphorus, silicon, phosphorus-halogen, phosphorus-nitrogen, aluminum, magnesium, boron and other types according to the flame retardant elements contained. Although halogen-based flame retardants have good flame-retardant effects, they relea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L101/00C08K13/06C08K9/02C08K3/32C08K3/24C08K3/22C08K3/36C09D175/08C09D7/12C09D5/18
Inventor 俞于怀胡容平吴良廖欢李开成
Owner GUANGXI XINJING TECH
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