Secondary modification of layered inorganic α-zirconium phosphate and its preparation method and application

A secondary modification, zirconium phosphate technology, applied in the field of preparation of layered α-zirconium phosphate additives, can solve the problems of narrow processing temperature range, low strength of bio-polyester, high synthesis cost, etc., to improve compatibility, reaction Fewer steps, easy to obtain effect

Active Publication Date: 2020-10-16
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in addition to high synthesis cost, biopolyester materials also have performance defects, such as most biopolyesters have low strength, poor thermal stability, easy decomposition in molten state, narrow processing temperature range, and poor solvent resistance. Defects make its application very limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Application of secondary modified layered α-zirconium phosphate and polylactic acid (PLA) composite

[0025] The PLA / secondarily modified layered α-zirconium phosphate composite material was prepared by solution casting method, and the secondary modified layered α-zirconium phosphate was weighed according to 1% to 3% of the mass of polylactic acid; a certain amount of secondary The modified layered α-zirconium phosphate and polylactic acid are dispersed in chloroform, ultrasonically mixed at 20KHz~120KHz for 30 minutes, stirred at room temperature for 12 hours, poured into a mold, and the solvent is fully evaporated at room temperature to obtain a composite film, and then the composite film Vacuum drying at 50°C for 48 hours to fully remove the residual solvent to obtain a polylactic acid / modified layered α-zirconium phosphate composite film with stable properties. Compared with pure polylactic acid, the tensile modulus of the composite increased from 40MPa t...

Embodiment 2

[0026] Example 2: Application of secondary modified layered α-zirconium phosphate and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3,4)HB) composite

[0027] Prepare P(3,4)HB / modified layered α-zirconium phosphate composite material by solution casting method, and weigh the secondary modified layered α-phosphoric acid according to 1% to 3% of the mass of P(3,4)HB Zirconium: Separately disperse a certain amount of secondary modified layered α-zirconium phosphate and P(3,4)HB in chloroform, ultrasonically mix for 30 minutes at 20KHz~120KHz, stir at room temperature for 12 hours, pour into the mold, room temperature The solvent was fully evaporated to obtain a composite film, and then the composite film was vacuum-dried at 50°C for 48 hours to fully remove the residual solvent, and a stable P(3,4)HB / modified layered α-zirconium phosphate composite film was obtained. Compared with pure P(3,4)HB, the tensile modulus of the composite material increased from 20MPa to 33MPa, and th...

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Abstract

The invention relates to a secondary modification of a layered inorganic substance alpha-zirconium phosphate and a preparation method and an application thereof. A bio-based polyester monomer is usedfor modifying the layered alpha-zirconium phosphate, and the alpha-zirconium phosphate is effectively delaminated by using the novel alkanol quaternary ammonium salt, and then the bio-based polyestermonomer is used for grafted coating, and a novel secondary modified layered alpha-zirconium phosphate additive is obtained. When the secondary modified alpha-zirconium phosphate is used as the additive for preparing a composite material such as bio-based polyester polylactic acid, the effective delamination of the alkanol quaternary ammonium salt and the secondary modification of the bio-based monomer are beneficial to improve the uniform dispersion of the layered alpha-zirconium phosphate in a matrix and its compatibility with biopolyester, which can effectively improve the strength of bio-polyester, and significantly reduces processing viscosity and improves the processing performance. The modified layered alpha-zirconium phosphate involved in the invention is easy to prepare, has good modification effect and wide application range; the modification method of the invention relates to a wide range of raw materials, has the advantages of low price, safety and non-toxicity, and simple process, is suitable for large-scale production, and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer additive preparation, in particular to a method for preparing a secondary modified layered α-zirconium phosphate additive, and the secondary modified layered α-zirconium phosphate as an additive in polylactic acid (PLA ) and other bio-polyester materials. Background technique [0002] The extensive use of synthetic plastics has resulted in the accumulation of plastic waste in nature. Since petroleum-based plastics cannot be degraded in nature, serious "white pollution" is caused. Biodegradable materials come from nature and return to nature, and because of their good biocompatibility and biodegradability, they have great potential in replacing chemically synthesized plastics, alleviating environmental crises, and providing new functional biomedical materials. important meaning. At present, in addition to high synthesis cost, biopolyester materials also have performance defects, such as most bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K3/32C08L67/04
CPCC08K3/32C08K9/04C08K2003/321C08L67/04
Inventor 张蕤杨政陈洪进王庭玮
Owner NANJING FORESTRY UNIV
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