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Nucleating agent for polylactic acid, composition and preparation method of nucleating agent

A technology of nucleating agent and polylactic acid, which is applied in the field of preparation of nucleating agent, composition and nucleating agent for polylactic acid, can solve the problems that have not been reported, and achieve the improvement of crystallinity and Vicat softening temperature Effect

Active Publication Date: 2020-06-26
BAOTOU RES INST OF RARE EARTHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] So far, there is still no relevant report about the rare earth aryl phosphate containing amino group as a nucleating agent for polylactic acid

Method used

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  • Nucleating agent for polylactic acid, composition and preparation method of nucleating agent
  • Nucleating agent for polylactic acid, composition and preparation method of nucleating agent
  • Nucleating agent for polylactic acid, composition and preparation method of nucleating agent

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preparation example Construction

[0051]

[0052] The preparation method of nucleating agent of the present invention comprises the steps:

[0053] The alcohol solution containing the water-soluble rare earth salt is reacted with the aqueous solution of the alkali metal aryl phosphate containing the amino group, filtered to obtain a filter cake, and the filter cake is dried to obtain the rare earth aryl phosphate containing the amino group.

[0054] In some embodiments, it also includes mixing amino group-containing rare earth aryl phosphate with inorganic powder, antioxidant and plasticizer to obtain a nucleating agent.

[0055] Amino group-containing alkali metal aryl phosphate of the present invention has the structure shown in formula (2)

[0056]

[0057] In formula (2), R 1 , R 5 are independently selected from hydrogen atom, C1~C3 alkyl; R 2 , R 3 and R 4 are independently selected from a hydrogen atom, an amino group, a C1-C8 alkyl group, and R 2 , R 3 and R 4 At least one of them is amino...

Embodiment 1

[0084] The nucleating agent comprises: 30 parts by weight of cerium p-aminophenyl phosphate, 15 parts by weight of silanized montmorillonite (inorganic powder, particle diameter of 5 μm), 25 parts by weight of antioxidant 1076, and acetyl tributyl citrate (plasticizer) 30 parts by weight.

[0085] The preparation method of nucleating agent comprises the steps:

[0086] Add the ethanol solution (concentration: 0.55mol / L) containing cerium chloride dropwise to the aqueous solution of sodium p-aminophenylphosphate (concentration: 2.4mol / L) at a rate of 10ml / min, and at 50°C React until no precipitate is formed, filter to obtain a filter cake, wash the filter cake with absolute ethanol and dry the filter cake at 80°C for 12 hours to obtain cerium p-aminophenylphosphate;

[0087] The cerium p-aminophenylphosphate, silylated montmorillonite, antioxidant 1076 and acetyl tributyl citrate (plasticizer) are uniformly mixed according to the above ratio to obtain a nucleating agent.

Embodiment 2

[0089] The nucleating agent comprises: 50 parts by weight of cerium p-aminophenylphosphate, 10 parts by weight of silylated nano silicon dioxide (inorganic powder, particle diameter is 800nm), 15 parts by weight of antioxidant 1010, and tributyl acetyl citrate 25 parts by weight of ester (plasticizer).

[0090] The preparation method of nucleating agent comprises the steps:

[0091] Add the ethanol solution (concentration: 0.55mol / L) containing cerium chloride dropwise to the aqueous solution (concentration: 1.2mol / L) of sodium p-aminophenylphosphate at a rate of 30ml / min, and react at 60°C Until no precipitate is formed, filter to obtain a filter cake, wash the filter cake with absolute ethanol and dry the filter cake at 80°C for 12 hours to obtain cerium p-aminophenylphosphate;

[0092] Mix cerium p-aminophenylphosphate, silanized nano silicon dioxide, antioxidant 1010 and acetyl tributyl citrate uniformly according to the above ratio to obtain a nucleating agent.

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Abstract

The invention discloses a nucleating agent for polylactic acid, a composition and a preparation method of the nucleating agent. The nucleating agent for polylactic acid includes amino group-containingrare earth aryl phosphate. The nucleating agent provided by the invention can improve the Vicat softening temperature of polylactic acid.

Description

technical field [0001] The invention relates to a nucleating agent for polylactic acid, a composition and a preparation method of the nucleating agent. Background technique [0002] Polylactic acid (PLA) is generally made from renewable resources such as sugarcane and corn, and the final product of degradation is CO 2 and H 2 O, no pollution to the environment. Due to the advantages of PLA's good mechanical properties, biodegradability, transparency, safety and good biocompatibility, its application range has gradually expanded, from the initial packaging products to agricultural films, civil engineering, automobiles, etc. , electronics, electrical appliances and daily necessities and other fields. [0003] The strength, hardness, heat distortion temperature, Vicat softening temperature and dimensional stability of PLA products are closely related to the crystallinity of PLA products. Among the many ways to increase the crystallization rate of PLA, the easiest way is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/5317C08K9/06C08K9/04C08K3/34C08K3/36C08K7/14C08K5/134C08K5/11C08K5/526C08K13/06C08L67/04C08L91/00
CPCC08K3/346C08K3/36C08K5/11C08K5/1345C08K5/526C08K5/5317C08K9/06C08K13/06C08K2201/011C08L67/04C08L2201/02C08L2205/24C08L91/00C08K9/04C08K7/14C08K3/34
Inventor 葛瑞祥曹鸿璋王慧于晓丽芦婷婷白雪陈明光吴豪曹露雅周晓东
Owner BAOTOU RES INST OF RARE EARTHS
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