基于氧化粉-凝希夫基反应和多重交联的协同作用的泡抑制剂
Xinyue Zhang1, Ru Wang1, Haiming Yu1
1College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
Carbohydrate polymers
|September 5, 2025
概括
这项研究使用氧化粉和凝开发了一种用于露天采矿的新型除尘剂. 这种材料增强了耐水性和机械强度,大大提高了防尘效率.
科学领域:
- 材料科学
- 环境工程
- 聚合物化学
背景情况:
- 开采活动会产生大量的灰尘,对环境和健康构成风险.
- 现有的防尘材料在恶劣的采矿条件下经常表现出不良的耐水性和机械强度.
- 对于适用于露天环境的有效和持久的防尘解决方案有着极大的需求.
研究的目的:
- 开发一种用于露天采矿的先进防尘材料.
- 提高防尘剂的耐水性和机械性能.
- 在具有挑战性的采矿条件下提高整体除尘效率.
主要方法:
- 通过氧化粉 (OS) 和凝 (GEL) 之间的希夫基反应合成了一种交联聚合物网络.
- 含有聚乙醇 (PVA) 和化 (CaCl2),以增强聚合物网络特性.
- 评估了开发的防尘剂的耐水性,机械坚固性 (85HA),抗风侵蚀性 (>96%),抗降雨性 (>96%) 和泡稳定性 (提高了29分钟).
主要成果:
- 在OS和GEL之间形成的希夫基网络显著提高了聚合物耐水性.
- 添加PVA和CaCl2创造了多个和离子键交联网络,增强了水.
- 最终的防尘剂表现出良好的粘合层坚固性和优越的抗风侵蚀和降雨能力.
结论:
- 基于氧化粉,凝,PVA和CaCl2的新型防尘剂为露天矿山的防尘提供了有前途的解决方案.
- 这些交叉连接策略有效地提高了材料在环境压力下的耐用性和性能.
- 这项研究为采矿行业开发下一代防尘技术提供了创新方法.
相关概念视频
Factors Affecting Solubility
32.2K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
32.2K
Colloidal precipitates
5.7K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
5.7K
Coagulation
1.5K
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
1.5K
Bioreactor Controls-II
76
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the...
76


