Preparation method of boron-containing flame retardant

A technology of flame retardant and boric acid, which is applied in the direction of fireproof coatings, etc., and can solve problems such as long reaction time

Active Publication Date: 2012-08-15
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, zinc borate often needs to be prepared by reacting boric acid or borax with zinc-containing compounds at high temperature, and the reaction time is also long (He Qiong: Preparation of submicron-sized low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Dissolve 0.4 mol of boric acid and 0.04 mol of glucose in 500mL of water at a temperature of 80°C, then mix in 480g of alkaline silica sol with a silica content of 10wt%, and then spray dry in a spray drying device with a hot air inlet temperature of 200°C. The outlet temperature is 150°C, and the white boron-containing flame retardant is obtained, the thermal weight loss temperature is higher than 200°C, and the maximum thermal weight loss temperature is between 300-400°C.

Embodiment 2

[0013] Dissolve 0.1 mol of boric acid and 0.4 mol of glucose in 150mL of water at a temperature of 60°C, then mix in 120g of acidic silica sol with a silica content of 40wt%, and then spray dry in a spray drying equipment. The hot air inlet temperature is 200°C, and the outlet At a temperature of 150°C, a white boron-containing flame retardant is obtained, and its thermal weight loss temperature is higher than 200°C, and the maximum thermal weight loss temperature is between 300 and 400°C.

Embodiment 3

[0015] Dissolve 0.4 mol of boric acid and 1.2 mol of glucose in 500 mL of water at a temperature of 80°C, then mix in 480g of alkaline silica sol with a silica content of 20wt%, and then spray dry in a spray drying device with a hot air inlet temperature of 200°C. The outlet temperature is 150°C, and the white boron-containing flame retardant is obtained, the thermal weight loss temperature is higher than 200°C, and the maximum thermal weight loss temperature is between 300-400°C.

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Abstract

A preparation method of boron-containing flame retardant belongs to the technical field of preparation of materials and includes: drying main components including boric acid, saccharides and silica sol by atomizing and obtaining novel flame retardant which is excellent in flame retardancy, smoke suppression, carbonization and molten dropping suppression capability. The flame retardant is adjustable in thermal weightlessness rate, the maximum thermal weightlessness rate can reach 40%, and the molten dropping suppression capability is high. Besides, the flame retardant can be favorably used for high-molecule materials which are low in molecular weight and are easy to be melted to flow during burning.

Description

technical field [0001] The invention relates to a preparation method of a boron-containing flame retardant, belonging to the field of material preparation. Background technique [0002] Flame retardants are important additives used to improve the flame retardancy of materials, prevent them from being ignited and inhibit the spread of flames. At present, most of the commonly used synthetic polymers and natural polymer materials need to add flame retardants to obtain flame retardant properties that meet national standards. The common elements used for flame retardancy are mainly magnesium in the main group II of the periodic table, boron and aluminum in the main group III, N, P and Sb in the main group V, halogens in the main group VII and some Zinc and molybdenum compounds. [0003] The combustion aid containing magnesium is mainly Mg(OH) 2 And magnesium borate and other compounds, magnesium hydroxide has the characteristics of high heat resistance temperature, but its str...

Claims

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Application Information

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IPC IPC(8): C09K21/02
Inventor 刘海弟李伟曼代永强岳仁亮陈运法
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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