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轻质热塑性丙烯酸酯聚甲基丙烯酸甲酯复合材料的开发及其力学性能表征。

Development of Lightweight Thermoplastic Acrylic PMMA Composites and Characterization of Their Mechanical Properties.

作者信息

Sun Jiming, Han Hyeonseok, Ahn Sooyeon, Jung Seongsu, Ha Sung Kyu

机构信息

Department of Mechanical Engineering, Hanyang University, 222 Wangsimri-ro, Seongdong-gu, Seoul 04763, Republic of Korea.

出版信息

Polymers (Basel). 2025 Jun 4;17(11):1563. doi: 10.3390/polym17111563.

DOI:10.3390/polym17111563
PMID:40508807
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12157979/
Abstract

The effects of benzoyl peroxide (BPO) and dimethylaniline (DMA) composition on the induction time and the tensile strength of thermoplastic acrylic (PMMA) resins have been investigated in this study. Eighteen resin formulations were prepared with different BPO/DMA ratios (2.0-9.5) and DMA contents (0.28-0.65 mol%), and it was observed that tensile strengths reached up to 66 MPa, and induction times (ITs) ranged from 100 to 207 min. Higher BPO/DMA ratios improved tensile strength but shortened IT, while greater DMA content accelerated curing. Polynomial regression models were successfully established, i.e., a third-order equation for the strength and a second-order equation for the IT, based on the BPO/DMA ratio and DMA content to identify the optimal formulation to balance the strength and the IT time. Two selected formulations, P-4-0.5 and P-3-0.3, were applied in vacuum-assisted resin infusion of glass fiber composites. The best-performing unidirectional (UD) laminate achieved a tensile strength of 1244 MPa. As regards ±45° biaxial (BX45) laminates, they exhibited a tensile strength of 124 MPa and a failure strain of 9.02%, which, while lower than that of epoxy, indicates competitive performance. These results demonstrate that the resin was well infused, resulting in 64% higher fiber volume fraction than typical infused glass/epoxy composites, and compositionally optimized PMMA resins can deliver epoxy-comparable strength and enhance damage tolerance in structural composite applications.

摘要

本研究考察了过氧化苯甲酰（BPO）与二甲基苯胺（DMA）组合物对热塑性丙烯酸酯（PMMA）树脂诱导期和拉伸强度的影响。制备了18种不同BPO/DMA比例（2.0 - 9.5）和DMA含量（0.28 - 0.65 mol%）的树脂配方，观察到拉伸强度可达66 MPa，诱导期（ITs）为100至207分钟。较高的BPO/DMA比例提高了拉伸强度，但缩短了诱导期，而较高的DMA含量加速了固化。基于BPO/DMA比例和DMA含量成功建立了多项式回归模型，即强度的三阶方程和诱导期的二阶方程，以确定平衡强度和诱导期时间的最佳配方。两种选定的配方P - 4 - 0.5和P - 3 - 0.3应用于玻璃纤维复合材料的真空辅助树脂灌注。性能最佳的单向（UD）层压板的拉伸强度达到1244 MPa。对于±45°双轴（BX45）层压板，其拉伸强度为124 MPa，破坏应变为9.02%，虽然低于环氧树脂，但显示出具有竞争力的性能。这些结果表明树脂灌注良好，纤维体积分数比典型的灌注玻璃/环氧树脂复合材料高64%，并且成分优化的PMMA树脂可以提供与环氧树脂相当的强度，并提高结构复合材料应用中的损伤容限。

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Development of Synthesis and Application of High Molecular Weight Poly(Methyl Methacrylate).高分子量聚甲基丙烯酸甲酯的合成与应用进展
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Crosslinked poly(methyl methacrylate) with perfluorocyclobutyl aryl ether moiety as crosslinking unit: thermally stable polymer with high glass transition temperature.
以全氟环丁基芳基醚部分作为交联单元的交联聚甲基丙烯酸甲酯：具有高玻璃化转变温度的热稳定聚合物。
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Optimizing Polymer Infusion Process for Thin Ply Textile Composites with Novel Matrix System.利用新型基体系统优化薄铺层纺织复合材料的聚合物灌注工艺
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