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Tensile and Bending Strength Analysis of Ramie Fiber and Woven Ramie Reinforced Epoxy Composite
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This study aims to analyze the effect of the number of woven ramie layers (plies) and ramie fiber weight as reinforcement of composite on the tensile strength and bending strength. The woven ramie reinforced composites are divided into five types including 1, 2, 3, 4, and 5 layers (plies). For ramie fiber, it is divided also into five types based on the weight of fibers as reinforcement: A, B, C, D, and E. The weight of ramie fiber types was adapted by the weight of woven ramie fiber types. All composite types were evaluated by tensile and bending test. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopes (SEM) were used to analyze the chemical change in the composite and fractural tensile morphology of composite, respectively. The results show that the number of woven ramie layers and the ramie fiber weight in the composite greatly affects the tensile strength and bending strength of the composite. The highest tensile and bending strengths were found in five layers (plies) of woven ramie composite, while for ramie fiber in the composite the highest tensile and bending strengths were found in E type.
摘要
研究了苎麻编织层数和苎麻纤维质量对复合材料拉伸强度和弯曲强度的影响. 苎麻机织增强复合材料可分为1、2、3、4、5层（层）. 苎麻纤维按纤维重量分为A、B、C、D、E五类. 苎麻纤维类型的重量由机织苎麻纤维类型的重量决定. 通过拉伸和弯曲试验对所有类型的复合材料进行评估. 采用傅立叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）分别分析了复合材料的化学变化和复合材料的断裂拉伸形貌. 结果表明，苎麻编织层数和苎麻纤维质量对复合材料的拉伸强度和弯曲强度有较大影响. 苎麻机织复合材料的5层（层）具有最高的拉伸和弯曲强度，苎麻纤维的5层（层）具有最高的拉伸和弯曲强度.
Source: https://www.tandfonline.com/doi/full/10.1080/15440478.2020.1726242?af=R
Hey, I’ve recently started using cbd gummy’s to help with my anxiety attacks, but I’ve noticed it doesn’t take effect fast enough to really help. I want to try out vaping it but I am not really interested in using disposables. Can you use any kind of pod systems to vape eliquid?
Source: https://www.reddit.com/r/CBD/comments/l49kgi/what_kind_of_pod_systems_can_you_use_with_cbd/
I’ve been looking around for tinctures, mainly full spectrum 1000mg/30 mL. The price for this has been hovering around $60-$70 from several vendors. However as I was browsing through powders, I found 1000mg full spectrum powder for just $30 at cbdistillery, at half the cost of pre-made full spectrum tincture. Is the price difference mainly just convenience? Pre-made tinctures seem to be far more expensive than a DIY. I understand you’d need to buy a carrier oil to make a tincture, so the total cost at first purchase would be more than $30, but one would be set for making additional cbd tinctures in the future.
Source: https://www.reddit.com/r/CBD/comments/l49ga2/premade_tincture_are_more_expensive/
Visit our community site for vetted suppliers at http://theCBD.place. It’s time that this subject was given more internet exposure. We are here to discuss topics related to medical marijuana and our experiences using CBD. Please do not assume that anyone here is a medical professional.
Source: https://www.reddit.com/r/CBD/comments/l4749q/have_you_guys_noticed_any_synergetic_effect_of/
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