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Hydrotalcite-like compound as flame-retardant smoke-suppressant agent for engineering plastics and preparation thereof

A technology for engineering plastics and smoke suppressants, applied in the field of engineering plastics, can solve the problems of large addition amount, influence, unfavorable mechanical and mechanical properties of polymer materials, etc., and achieve the effects of good effect and simple preparation method.

Inactive Publication Date: 2008-10-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the above literature, hydrotalcite-like materials show good flame-retardant effects as flame retardants. However, the large amount of this type of material added during use has brought adverse effects on the mechanical and mechanical properties of polymer materials. influences

Method used

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  • Hydrotalcite-like compound as flame-retardant smoke-suppressant agent for engineering plastics and preparation thereof
  • Hydrotalcite-like compound as flame-retardant smoke-suppressant agent for engineering plastics and preparation thereof
  • Hydrotalcite-like compound as flame-retardant smoke-suppressant agent for engineering plastics and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0041] A: Weigh 71.79g Mg(NO 3 ) 2 ·6H 2 O and 52.52g Al(NO 3 ) 3 9H 2 O was dissolved in carbon dioxide-free water to make 350mL mixed salt solution; then 26.88g NaOH was weighed and dissolved in carbon dioxide-free water to make 350mL mixed alkali solution; The slit width between the rotor and the stator is 2mm, the operating voltage is 140V, and the rotor speed is 5000rpm. Put the obtained mixed slurry into a three-necked flask for heating and stirring, under nitrogen protection, keep the temperature of the mixed slurry in the bottle at 80°C for reflux crystallization 6 hour, obtain the magnesium aluminum hydrotalcite precursor;

[0042] B: The product prepared in step A is fully washed with carbon dioxide-free water, so that the pH value of the supernatant is 7, and then fully stirred with carbon dioxide-free water to form a slurry with a solid content of 5%, adjust the pH value to 7, add Heat and stir in the three-necked flask, nitrogen protection, let the temperatu...

example 2

[0047] A: Same as example 1;

[0048] B: Same as example 1;

[0049] C: Same as example 1;

[0050] D: Same as Example 1;

[0051] E: Weigh 100g of the sample obtained in step D, then weigh 100g of ABS, mix evenly on a double-wheel kneader at 170°C, use a flat vulcanizer to press the sample to prepare samples, and finally test the oxygen index and smoke density.

example 3

[0053] A: Weigh 23.80g Zn(NO 3 ) 2 ·6H 2 O, 20.51g Mg(NO 3 ) 2 ·6H 2 O and 30.01g Al(NO 3 ) 3 9H 2 O was dissolved in decarbonated water to make 200mL mixed salt solution; then weighed 15.36g NaOH and dissolved in decarbonated water to make 200mL mixed alkali solution; The slit width between the rotor and the stator is 2mm, the operating voltage is 140V, and the rotor speed is 5000rpm. Put the obtained mixed slurry into a three-necked flask for heating and stirring, under nitrogen protection, keep the temperature of the mixed slurry in the bottle at 80°C for reflux crystallization 6 hour, obtain the zinc-magnesium-aluminum hydrotalcite precursor;

[0054] B: The product prepared in step A is fully washed with carbon dioxide-free water, so that the pH value of the supernatant is 7, and then fully stirred with carbon dioxide-free water to form a slurry with a solid content of 5%, adjust the pH value to 7, add Heat and stir in the three-necked flask, nitrogen protection,...

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Abstract

A hydrotalcite-like compound used as flame retardant and smoke suppressant of engineering plastics and the preparation method of the hydrotalcite-like compound belong to the technical field of catalytic materials. The chemical formula of the flame retardant and smoke suppressant is as follows: Mg2Al(OH)6*C4F9SO3*mH2O or ZnMgAl(OH)6*C4F9SO3*mH2O. First of all, layered double hydroxide precursors with particle size of nano or sub-micron level are prepared through common preparation methods of hydrotalcite-like materials, such as co-precipitation, crystal nucleation / isolation, non-equilibrium crystallization or hydrothermal synthesis; then different intercalation products are prepared through adjusting the number of anions; finally, the flame retarding and smoke suppressing performances of the hydrotalcite-like compound to ABS and PP are tested by changing the adding amount of the intercalation products. The hydrotalcite-like compound of the invention has the advantages of simple and easy preparation method and good effects, which is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and in particular relates to a hydrotalcite-like flame retardant and smoke suppressant for engineering plastics and a preparation method thereof, that is, organic anion intercalated hydrotalcite is used as a flame retardant and smoke suppressant for engineering plastics and a preparation method thereof. Specifically, it relates to an intercalation method of nano-scale and micron-scale layered double hydroxyl compound metal oxides. The intercalation product is suitable for engineering plastics and general plastics as a flame retardant and smoke suppressant, especially for acrylonitrile-butadiene-styrene copolymer (abbreviated as ABS) resin and polypropylene (abbreviated as PP) plastics. Background technique [0002] ABS resin is a terpolymer composed of acrylonitrile, butadiene and styrene. It has good rigidity, high impact strength, heat resistance, low temperature resistance, chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C08L55/02C08L23/12
Inventor 张法智张利霞徐赛龙段雪张博文
Owner BEIJING UNIV OF CHEM TECH