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流变学如何参与通过自由基聚合获得的相分离聚氯乙烯-丙烯酸酯共聚物的3D打印。

How Is Rheology Involved in 3D Printing of Phase-Separated PVC-Acrylate Copolymers Obtained by Free Radical Polymerization.

作者信息

Peñas Mario Iván, Calafel Miren Itxaso, Aguirresarobe Roberto Hernández, Tierno Manuel, Conde José Ignacio, Pascual Belén, Santamaría Antxon

机构信息

POLYMAT and Polymers and Advanced Materials: Physics, Chemistry and Technology Department, Faculty of Chemistry, UPV/EHU, Avda. Tolosa 72, 20018 San Sebastian, Spain.

ERCROS S.A., Innovation and Technology Department, Chlorine Derivatives Division, Diagonal 595, 08014 Barcelona, Spain.

出版信息

Polymers (Basel). 2020 Sep 12;12(9):2070. doi: 10.3390/polym12092070.

DOI:10.3390/polym12092070
PMID:32932625
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7569851/
Abstract

New auto-plasticised copolymers of poly(vinyl chloride)-r-(acrylate) and polyvinylchloride, obtained by radical polymerization, are investigated to analyse their capacity to be processed by 3D printing. The specific microstructure of the copolymers gives rise to a phase-separated morphology constituted by poly(vinyl chloride) (PVC) domains dispersed in a continuous phase of acrylate-vinyl chloride copolymer. The analysis of the rheological results allows the suitability of these copolymers to be assessed for use in a screw-driven 3D printer, but not by the fused filament fabrication method. This is due to the high melt elasticity of the copolymers, caused by interfacial tension between phases. A relationship between the relaxation modulus of the copolymers and the interlayer adhesion is established. Under adequate 3D-printing conditions, flexible and ductile samples with good dimensional stability and cohesion are obtained, as is proven by scanning electron microscopy (SEM) and tensile stress-strain tests.

摘要

通过自由基聚合获得的新型聚（氯乙烯）-r-（丙烯酸酯）与聚氯乙烯的自增塑共聚物，被用于研究其3D打印加工能力。共聚物的特定微观结构导致形成一种相分离形态，由分散在丙烯酸酯-氯乙烯共聚物连续相中的聚（氯乙烯）（PVC）域构成。流变学结果分析使得能够评估这些共聚物是否适合用于螺杆驱动的3D打印机，但不适合用于熔丝制造方法。这是由于相之间的界面张力导致共聚物具有高熔体弹性。建立了共聚物的松弛模量与层间附着力之间的关系。在适当的3D打印条件下，通过扫描电子显微镜（SEM）和拉伸应力-应变测试证明，可获得具有良好尺寸稳定性和内聚力的柔性且韧性的样品。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/69f14cf5d346/polymers-12-02070-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/9624ebbfe87d/polymers-12-02070-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/5b2605502bee/polymers-12-02070-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/078223031dab/polymers-12-02070-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/81332485e2b8/polymers-12-02070-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/7b4bdd661eec/polymers-12-02070-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/298f15eba7b0/polymers-12-02070-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/208289e54b57/polymers-12-02070-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/9da2c4c6edba/polymers-12-02070-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/dde9159880f3/polymers-12-02070-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/69f14cf5d346/polymers-12-02070-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/9624ebbfe87d/polymers-12-02070-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/5b2605502bee/polymers-12-02070-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/078223031dab/polymers-12-02070-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/81332485e2b8/polymers-12-02070-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/7b4bdd661eec/polymers-12-02070-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/298f15eba7b0/polymers-12-02070-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/208289e54b57/polymers-12-02070-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/9da2c4c6edba/polymers-12-02070-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/dde9159880f3/polymers-12-02070-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9283/7569851/69f14cf5d346/polymers-12-02070-g010.jpg

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