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Preparation method of nano barium borate sol and application thereof in polyester flame retardance

A barium borate and sol technology, applied in the directions of borates and boron oxide compounds, can solve the problems of difficult processing, deterioration of material mechanical properties, large particles, etc., to reduce secondary agglomeration, improve thermal and mechanical properties, and ensure The effect of granularity

Inactive Publication Date: 2014-09-03
曲铭海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of high-concentration and good stability nano-barium borate colloid and its application in polyester flame retardant, to solve the problem of large particles of inorganic flame retardant powder added in polyester flame retardant. Subsequent processing difficulties and serious degradation of mechanical properties of materials

Method used

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  • Preparation method of nano barium borate sol and application thereof in polyester flame retardance
  • Preparation method of nano barium borate sol and application thereof in polyester flame retardance
  • Preparation method of nano barium borate sol and application thereof in polyester flame retardance

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Weigh 136g of barium hydroxide octahydrate, add 250g of ethylene glycol, heat and stir to dissolve, then filter while it is hot, keep the filtrate at 60-70°C for later use; weigh 80.3g of boric acid, add 125g of ethylene glycol and 150g of water, heat and stir to dissolve; Under vigorous stirring, add to the barium hydroxide solution in batches within 3-5min, and stir at 90-95°C for 2.5h under temperature control; fractionate the water by heating, and stop the fractionation when the temperature rises to 197°C to obtain 25wt% boric acid Barium Glycol Sol.

Embodiment 2

[0032]Weigh 11g of barium hydroxide octahydrate, add 375g of ethylene glycol, heat and stir to dissolve, then filter while hot, and use the filtrate for later use; weigh 6.5g of boric acid, add 200g of ethylene glycol and 100g of water, slightly heat and stir to dissolve; under vigorous stirring , added to the barium hydroxide solution in batches within 3-5min, and stirred at room temperature -50°C for 0.5h under temperature control; heated to fractionate the water, and the temperature rose to 197°C to stop the fractionation to obtain 2wt% barium ethylene diborate Alcohol sol.

Embodiment 3

[0034] Weigh 80g of barium hydroxide octahydrate, add 310g of ethylene glycol, heat and stir to dissolve, then filter while hot, keep the filtrate at 40-50°C for later use; weigh 47.2g of boric acid, add 160g of ethylene glycol and 120g of water, heat and stir to dissolve; Under vigorous stirring, add to the barium hydroxide solution in batches within 3-5min, and stir at 50-60°C for 1.5h under temperature control; fractionate the water by heating, and stop the fractionation when the temperature rises to 197°C to obtain 15wt% boric acid Barium Glycol Sol.

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Abstract

The invention discloses a preparation method of nano barium borate sol and application thereof in polyester flame retardance. The nano barium borate sol is prepared from barium hydroxide and boric acid through neutralizing reaction in a mixed solution of water and C2-C4 diol, wherein the highest concentration can reach 25% by weight, and the particle size is 5-80nm. The colloidal particles are dispersed uniformly, have good stability and do not form second agglomeration after long-time standing. The nano barium borate sol can be directly added into a polyester reaction system independently or after being compounded with other flame retardants, and a flame-retardant copolyester nano composite material is prepared through an in-situ polymerization way. Through the invention, the problems that the subsequence processing is difficult and the mechanical properties of materials are deteriorated seriously since an inorganic flame retardant with large powder particles is added for polyester flame retardance are solved. The preparation method disclosed by the invention has the advantages of low cost, simple process, easiness in realizing industrial production, high processability of the prepared material and the like, and brings obvious social and economic benefits.

Description

technical field [0001] The invention relates to a new application of barium borate, especially the preparation of nanometer barium borate sol and its application in polyester flame retardancy. A flame-retardant polyester nano-composite material with strong processability and excellent mechanical properties can be obtained by adding it to the polyester synthesis reaction system alone or compounded with other flame retardants, and by in-situ polymerization. Background technique [0002] my country is the largest polyester producer in the world. As a fiber material, polyester has accounted for about 70% of all synthetic fibers. The flame retardancy of this type of material has attracted widespread attention worldwide. Since the 1970s, flame retardant polyester The research of polyester has always been a hot spot in polyester research. [0003] At present, flame retardant polyesters and fibers mainly use additive or reactive flame retardants, but this often leads to deterioratio...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K3/38C08G63/183C01B35/12
Inventor 曲铭海张伟盛勇徐静张梅赵庆福
Owner 曲铭海
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