含有天然植物添加剂的环氧树脂基材料,用于铁路运输
Anna Masek1, Olga Olejnik1, Leszek Czechowski2
1Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego Str. 16, 90-537 Lodz, Poland.
Materials (Basel, Switzerland)
|November 25, 2023
概括
这项研究将环氧树脂增强为天然阻燃剂,如奎尔酸盐和土豆粉,用于环保的铁路运输材料. 修改后的树脂显示出更好的耐老化性和生物降解性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续工程 可持续工程
背景情况:
- 环氧树脂被广泛使用,但面临着关于降解和处置的环境问题.
- 开发具有增强性能的可持续替代品对于铁路运输等行业至关重要.
- 天然添加剂为制造环保和生物降解复合材料提供了潜力.
研究的目的:
- 使用天然阻燃剂来修改商业环氧树脂:奎尔酸盐和土豆粉.
- 为铁路运输创造一种环保的材料,具有耐老化性和增强的生物降解性.
- 评估天然添加剂对材料性能和降解特性的影响.
主要方法:
- 在环氧树脂中加入奎尔酸盐和土豆粉.
- 太阳光衰老试验,以评估材料的耐用性.
- 机械测试 (拉力测试),硬度,颜色和表面自由能量测量.
- 福利埃变换红外 (FT-IR) 光谱和热重力测量分析 (TGA) 用于结构和热评价.
主要成果:
- 经过修改的环氧复合材料表现出耐老化,经过测试的硬度和机械强度等特性显示出稳定性.
- 奎尔赛丁水合物有效地防止了开采期间的过早降解.
- 马粉有助于生物降解的潜力,与环境目标保持一致.
- FT-IR和TGA证实了添加剂的加入及其对热稳定性的影响.
结论:
- 开发的环氧复合材料,利用酸水合物和土豆粉,为铁路运输应用提供了一个有希望的环保解决方案.
- 这些材料在运行耐用性和寿命末期生物降解性之间具有平衡性.
- 天然阻燃剂可以显著提高环氧基材料的可持续性,而不会损害其基本性能特征.
相关概念视频
Additives and Fillers in Concrete
99
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
99
Air-entraining Agents
80
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
80
Wood Products
83
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
83
Superplasticizers
85
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
85
Retarders
69
Retarders are chemical admixtures designed to extend the setting time, which is especially useful when there is a delay in sequential concrete pours to prevent cold joints and to achieve a cohesive structure. Retarders, when used in appropriate amounts, can also enhance the architectural appearance of exposed aggregate finishes.
The function of retarders is to delay the setting of concrete, and this effect can be measured using a penetration test. The retardation process involves adding...
The function of retarders is to delay the setting of concrete, and this effect can be measured using a penetration test. The retardation process involves adding...
69
Fiber Reinforced Concrete
84
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
84


