Preparation method of flame-retardant borate-intercalated hydrotalcite-polypropylene compound

A borate intercalation and hydrotalcite technology, which is applied in the field of flame retardant polypropylene composites, can solve the problems of poor compatibility with polymer materials, poor compatibility, easy precipitation, etc., and achieves good compatibility, uniform dispersion, and improved dispersive effect

Inactive Publication Date: 2014-12-24
JINAN TAIXING FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor compatibility between inorganic hydrotalcite flame retardants and polymer materials, and propose a method for preparing hydrotalcite polypropylene composites with good dispersibility by solvent mixing method
Solve the technical problems of poor compatibility, easy precipitation and instability of hydrotalcite flame retardants due to their high polarity

Method used

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  • Preparation method of flame-retardant borate-intercalated hydrotalcite-polypropylene compound
  • Preparation method of flame-retardant borate-intercalated hydrotalcite-polypropylene compound
  • Preparation method of flame-retardant borate-intercalated hydrotalcite-polypropylene compound

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Preparation of borate intercalated hydrotalcite: weigh 11.14g (0.0375mol) of Zn(NO 3 ) 2 ·6H 2 O and 7.025g (0.0187mol) of Al(NO 3 ) 3 9H 2O was dissolved in 50ml of water to prepare zinc-aluminum metal salt solution A; weigh 5.225g (0.085mol) of H 3 BO 3 , prepare boric acid solution B; under the condition of constant stirring, drop solution B into solution A, and control the pH value at about 8.3 by adding 1mol / L NaOH solution dropwise, the whole reaction process is carried out under nitrogen protection, and the reaction After the end, wash and filter to neutrality to obtain borate intercalated hydrotalcite.

[0046] (1) Disperse the above-prepared borate intercalated hydrotalcite in 100ml of acetone, stir at room temperature for 1h, and then dry at 65°C for 12h.

[0047] (2) 0.3 g of hydrotalcite treated in step (1) and 4.7 g of polypropylene were added into 100 ml of xylene, and the mixture was stirred and refluxed at 140° C. for 2 h until the polypropylene w...

Embodiment 2

[0050] Preparation of borate intercalated hydrotalcite: weigh 11.14g (0.0375mol) of Zn(NO 3 ) 2 ·6H 2 O and 7.025g (0.0187mol) of Al(NO 3 ) 3 9H 2 O was dissolved in 50ml of water to prepare zinc-aluminum metal salt solution A; weigh 5.225g (0.085mol) of H 3 BO 3 , prepare boric acid solution B; under the condition of constant stirring, solution B is added dropwise in solution A, and by dropping 1M NaOH, the pH value is controlled at about 8.3, and the whole reaction process is under N 2 Carried out under protection, after the reaction, washing and suction filtering to neutrality to obtain borate intercalated hydrotalcite.

[0051] (1) Disperse the prepared hydrotalcite in 100ml of acetone, stir at room temperature for 1h, and then dry at 65°C for 12h.

[0052] (2) 0.75 g of hydrotalcite treated in step (1) and 4.25 g of polypropylene were added into 100 ml of xylene, and the mixture was stirred and refluxed at 140° C. for 2 h until the polypropylene was completely diss...

Embodiment 3

[0055] Preparation of borate intercalated hydrotalcite: weigh 11.14g (0.0375mol) of Zn(NO 3 ) 2 ·6H 2 O and 7.025g (0.0187mol) of Al(NO 3 ) 3 9H 2 O was dissolved in 50ml of water to prepare zinc-aluminum metal salt solution A; weigh 5.225g (0.085mol) of H 3 BO 3 , prepare boric acid solution B; under the condition of constant stirring, solution B is added dropwise in solution A, and by dropping 1M NaOH, the pH value is controlled at about 8.3, and the whole reaction process is under N 2 Carried out under protection, after the reaction, washing and suction filtering to neutrality to obtain borate intercalated hydrotalcite.

[0056] (1) Disperse the hydrotalcite prepared above in 100 ml of acetone, stir at room temperature for 1 h, and then dry at 65° C. for 12 h.

[0057] (2) 1.5 g of hydrotalcite treated in step (1) and 3.5 g of polypropylene were added into 100 ml of xylene, and the mixture was stirred at 140° C. for 2 hours until the polypropylene was completely diss...

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Abstract

The invention discloses a preparation method of a flame-retardant borate-intercalated hydrotalcite-polypropylene compound, and belongs to the technical field of flame retardants. The preparation method comprises the following steps: (1) pretreating borate-intercalated hydrotalcite in an organic solvent I containing electrophilic groups; (2) mixing the processed hydrotalcite in the step (1) with polypropylene according to an addition amount which is 1-30 wt% of the total weight, and putting the mixture in an organic solvent II for backflow reaction; (3) after the backflow reaction, adding the solution to an organic extraction agent to be extracted, and finally preparing the flame-retardant borate-intercalated hydrotalcite-polypropylene compound. The preparation method disclosed by the invention solves the technical problems that the hydrotalcite flame retardant is poor in compatibility, easy to separate out and unstable due to the high polarity.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polypropylene composites, and relates to a preparation method of a flame-retardant borate-intercalated hydrotalcite polypropylene composite. Background technique [0002] Hydrotalcite: Layered Double Hydroxides (LDHs). LDHs are compounds formed by the accumulation of interlayer anions and positively charged laminates. Due to the unique structural composition of LDHs, LDHs have unique acid-base bifunctionality, interlayer ion exchangeability, thermal stability, and memory effect. The metal cation composition and interlayer anion height of LDHs laminates can be adjusted, so it has a wide range of applications in the fields of catalysts, flame retardants, thermal stabilizers, adsorbents, antibacterial materials, and ultraviolet barrier materials. In terms of flame retardancy, when LDHs is heated, its structure hydrates the hydroxyl groups of the laminates and the interlayer ions with water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/04C08K3/26
CPCC08K9/02C08K3/26C08L2201/02
Inventor 乔志孙晓丽王林段金凤张旭
Owner JINAN TAIXING FINE CHEM
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