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A zinc phenylphosphonate nucleating agent, preparation method, shape control method and application

A technology of zinc phenylphosphonate and a control method, applied in the field of material engineering, can solve the problems of less research on the influence of synthesis methods and conditional morphology, improve polylactic acid, etc., and achieve the effects of easy control, improved crystallization performance, and easy raw materials

Active Publication Date: 2018-04-13
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although phenyl phosphate as a nucleating agent can significantly improve the crystallization properties of polylactic acid, the synthesis of phenyl phosphonate-based nucleating agents mainly uses the coprecipitation method, and there are few studies on the synthesis method and conditions. influence on its shape

Method used

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  • A zinc phenylphosphonate nucleating agent, preparation method, shape control method and application
  • A zinc phenylphosphonate nucleating agent, preparation method, shape control method and application
  • A zinc phenylphosphonate nucleating agent, preparation method, shape control method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0027] Preparation of Zinc Phenylphosphonate by Hydrothermal Synthesis:

[0028] Weigh 0.095g of phenylphosphonic acid and dissolve it in 15ml deionized water; weigh 0.179g of Zn(NO 3 ) 2 ·6H 2 O is dissolved in 15ml of dilute nitric acid with a concentration of 35mmol / L, in which the concentration of phenylphosphonic acid is 40mmol / L, Zn 2+ The concentration is 40mmol / L, Zn 2+ The molar ratio to phenylphosphonic acid is 1:1; mix the two solutions and stir evenly, adjust the pH to 1.5 with a sodium hydroxide solution with a concentration of 1.5mol / L, and stir magnetically for 30min (30°C); mix the The solution was transferred to a 50ml hydrothermal reaction kettle, and reacted at 120°C for 24h; after the reaction was completed, cooled to room temperature, opened the kettle, transferred the reaction solution to a watch glass, and dried it in a constant temperature drying oven at 60°C for 30h. That is, the product zinc phenylphosphonate is obtained.

Embodiment 3

[0030] Preparation of Zinc Phenylphosphonate by Hydrothermal Synthesis:

[0031] Weigh 0.095g of phenylphosphonic acid and dissolve it in 15ml deionized water; weigh 0.179g of Zn(NO 3 ) 2 ·6H 2 O is dissolved in 15ml of dilute nitric acid with a concentration of 35mmol / L, in which Zn 2+ The concentration of phenylphosphonic acid is 40mmol / L, the concentration of phenylphosphonic acid is 40mmol / L, Zn 2+ The molar ratio with phenylphosphonic acid is 1:1; after mixing the two solutions and stirring evenly, adjust the pH of the mixed solution to 4.1 with a sodium hydroxide solution with a concentration of 1.5mol / L, and stir magnetically for 20min (40°C) ;Transfer the mixed solution to a 50ml hydrothermal reaction kettle, and react at 120°C for 24h; after the reaction is completed, cool to room temperature, open the kettle, transfer the reaction solution to a watch glass, and put it in a constant temperature drying oven at 60°C After drying for 30 hours, the product zinc phenyl...

Embodiment 4

[0033] Preparation of Zinc Phenylphosphonate by Hydrothermal Synthesis:

[0034] Weigh 0.095g of phenylphosphonic acid and dissolve it in 15ml deionized water; weigh 0.179g of Zn(NO 3 ) 2 ·6H 2 O is dissolved in 15ml of dilute nitric acid with a concentration of 0.035mol / L, in which Zn 2+ The concentration of phenylphosphonic acid is 40mmol / L, the concentration of phenylphosphonic acid is 40mmol / L, Zn 2+ The molar ratio to phenylphosphonic acid is 1:1; after mixing the two solutions and stirring evenly, adjust the pH of the mixed solution to 5.3 with a sodium hydroxide solution with a concentration of 1.5mol / L, and stir magnetically for 40min (20°C) ;Transfer the mixed solution to a 50ml hydrothermal reaction kettle, and react at 120°C for 24h; after the reaction is completed, cool to room temperature, open the kettle, transfer the reaction solution to a watch glass, and put it in a constant temperature drying oven at 60°C After drying for 30 hours, the product zinc phenyl...

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Abstract

A zinc phenylphosphonate nucleating agent, a preparation method, a shape control method and an application thereof belong to the technical field of material engineering. First, according to the molar ratio of Zn2+ and phenylphosphonic acid as 1:1, mix the aqueous solution of phenylphosphonic acid and the acidic aqueous solution of zinc salt, adjust the pH value of the mixed solution to 1-6 and perform pre-reaction, and then synthesize by hydrothermal method Zinc phenylphosphonate. The zinc phenylphosphonate of the present invention has good dispersibility, its sheet morphology changes with the adjustment of pH value, and the aspect ratio of the sheet layer gradually decreases with the increase of pH value. The crystallization properties of polylactic acid can be improved by melt blending nucleating agent and polylactic acid on a torque rheometer. The shape control method of the invention is simple and effective, and provides a reference method for the shape control of the nucleating agent.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to a zinc phenylphosphonate nucleating agent, a preparation method, a shape control method and an application. Background technique [0002] Polylactic acid is a polymer material formed by the polymerization of small molecular lactic acid produced by microbial fermentation of crop raw materials. It has good biocompatibility and biodegradability, and its performance is similar to that of general-purpose plastics such as polypropylene. It can be used for injection molding and extrusion. It is widely used in industry, agriculture, electronics and other fields. However, polylactic acid has disadvantages such as slow crystallization rate, poor toughness and low heat distortion temperature, which restrict its industrial application. [0003] Adding nucleating agent is one of the effective ways to improve the crystallization rate of PLA. The addition of a nucleat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5317C07F9/38C08L67/04
CPCC07F9/3834C08K5/5317C08L2205/24C08L67/04
Inventor 鲁红典梁扬谢红燕杨伟司靖宇
Owner HEFEI UNIV