A kind of anti-aging polyester composite material and preparation method thereof

A polyester composite material and anti-aging technology, applied in the field of materials science, can solve the problems of low molecular weight and poor toughness of PLA, and achieve good interaction, excellent anti-ultraviolet aging performance, and high rigidity

Active Publication Date: 2020-11-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of its composite nanoparticles involves the ring-opening polymerization of D-polylactic acid, and the obtained molecular weight is low, and the toughness of PLA has not been improved.

Method used

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  • A kind of anti-aging polyester composite material and preparation method thereof
  • A kind of anti-aging polyester composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Preparation of nanoparticles modified by reactive elastomer macromolecules:

[0034] (1) first nano-TiO 2 Disperse the dispersant polyvinylpyrrolidone in the ethanol / deionized water mixture, control the pH of the system to about 9, slowly drop into the ethanol solution of tetraethyl orthosilicate, fully react at room temperature, and finally separate and obtain coated SiO 2 layer of nanoparticles (TiO 2 @SiO 2 );

[0035] (2) Secondly, the silane coupling agent KH550 is hydrolyzed in deionized water to obtain a homogeneous solution, and then a certain amount of TiO 2 @SiO 2 Nanoparticles were added into the solution, fully reacted at 70 ° C, and finally separated to obtain nanoparticles modified by silane coupling agent (TiO 2 @SiO 2 -KH550), wherein the silane coupling agent KH550 quality is TiO 2 @SiO 2 1.5 times the mass;

[0036] (3) the TiO obtained above 2 @SiO 2 -KH550 nanoparticles are added to N,N-dimethylformamide, then epoxidized vinyl acetate-b...

Embodiment 2

[0041] 1. Preparation of nanoparticles modified by reactive elastomer macromolecules:

[0042] TiO in embodiment 1 2 Replaced by ZnO, the same method was used to prepare nanoparticles modified by reactive elastomeric macromolecules to obtain ZnO@SiO 2 - g-epoxidized vinyl acetate based copolymer.

[0043] 2. Preparation of composite materials:

[0044] 80 parts of PBT, 20 parts of ethylene-vinyl acetate-glycidyl methacrylate copolymer (the mass content of vinyl acetate is 60%, the mass content of glycidyl methacrylate is 3%), ZnO@SiO 2 -1 part of g-epoxidized vinyl acetate-based copolymer and functional additives were added to the internal mixer for melt blending for 5 minutes (blending temperature was 235°C, rotation speed was 80rpm) to obtain a high-toughness anti-ultraviolet aging PBT composite material.

[0045] The above-mentioned high-toughness and anti-ultraviolet aging PBT composite material was hot-pressed by a flat vulcanizer for tensile, impact performance and u...

Embodiment 3

[0047] 1. Preparation of nanoparticles modified by reactive elastomer macromolecules:

[0048] Adopt the same method of embodiment 1 to prepare the nanoparticle TiO of reactive elastomer macromolecule modification 2 @SiO 2 - g-epoxidized vinyl acetate based copolymer.

[0049] 2. Preparation of composite materials:

[0050] Will reclaim PET75 parts, ethylene-vinyl acetate-glycidyl methacrylate copolymer (vinyl acetate mass content is 60%, glycidyl methacrylate mass content is 3%) 25 parts, TiO 2 @SiO 2 - 1 part of epoxidized vinyl acetate-based copolymer is premixed uniformly at room temperature, and then the premix is ​​added to the conveying section of the twin-screw extruder, and is continuously melted and extruded (extrusion temperature is 260 ° C, screw speed Be 180rpm) obtain a kind of high tenacity anti-ultraviolet aging PET composite material.

[0051] The extruded high-toughness anti-ultraviolet aging PET composite material was fully dried and then injected into ...

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Abstract

The invention discloses an anti-aging polyester composite material and a preparation method thereof, and belongs to the field of material science. The composite material disclosed by the invention isprepared from the following raw materials in parts by weight: 75 to 85 parts of polyester, 15 to 25 parts of epoxide elastomer copolymer, 0.5 to 5 parts of reactive elastomer macromolecule modified nanoparticles, and 0.01 to 5 parts of a functional aid. The polyester is at least one of polyethylene glycol terephthalate and polybutylene terephthalate; the epoxide elastomer copolymer comprises at least one of vinyl acetate copolymer and ethylene-acrylate copolymer, and at least contains a glycidyl methacrylate structural unit, wherein the mass percentage content of the glycidyl methacrylate is 0.5 to 10 percent; the reactive elastomer macromolecules are the epoxide elastomer copolymer. The material disclosed by the invention is high in toughness, high in strength, excellent in anti-ultraviolet anti-aging performance, and can be applied to the fields of polyester fibres, plastic package, electric appliance outer shell, automobile industry and instruments and apparatuses.

Description

technical field [0001] The invention relates to an anti-aging polyester composite material and a preparation method thereof, belonging to the field of materials science. Background technique [0002] Polyester materials, including polyethylene terephthalate (PET), polybutylene terephthalate (PBT), etc. as thermoplastic resins, are a class of engineering plastics with excellent performance and a wide range of uses. Because of its excellent mechanical properties, electrical insulation properties and heat resistance, it is widely used in the fields of electronic appliances, automobile industry and machinery, polyester fiber and plastic packaging. However, it has obvious shortcomings, that is, it is sensitive to the notch and exhibits low notched impact strength, so it generally needs to be modified. Using functionalized elastomers and in-situ compatibilization of polymer materials to achieve toughening of polyester is currently a relatively simple and effective method (Journal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L31/04C08K9/10C08K9/06C08K9/04C08L23/08
CPCC08K2201/011C08L67/02C08L2201/08C08L2205/05C08L31/04C08K9/10C08K9/06C08K9/08C08L23/0884
Inventor 马丕明操莹钮德宇东为富杨伟军刘波
Owner JIANGNAN UNIV
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