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841.
本文针对氯碱工业特殊的防腐蚀要求,简要介绍了以双酚A型不饱和树脂为基体制作玻璃钢衬层和玻璃磷片涂层的配方、施工工艺及应注意的问题。 相似文献
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为了解亚麻籽胶对糯米淀粉凝胶冻融稳定性的影响,利用差示扫描量热仪、X-射线衍射、傅里叶变换红外光谱仪和扫描电镜测定添加不同比例亚麻籽胶的糯米淀粉凝胶经过7次冻融循环后的热力学特性、结晶性、分子结构和微观结构。结果显示,亚麻籽胶能显著降低糯米淀粉凝胶的析水率;淀粉凝胶熔融焓/糊化焓降低显示糯米淀粉凝胶老化受抑制;随着亚麻籽胶添加量增大糯米淀粉凝胶相对结晶度降低,显示亚麻籽胶抑制了淀粉凝胶的重结晶;亚麻籽胶使淀粉凝胶羟基伸缩振动峰发生较大的位移,增强分子间氢键作用力,而没有生成新的基团;添加亚麻籽胶的淀粉凝胶微观结构表面光滑平整,凹洞较小,基质较紧密。说明亚麻籽胶能提高糯米淀粉凝胶的冻融稳定性。 相似文献
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防腐蚀新技术在氯碱工业中的应用 总被引:3,自引:0,他引:3
介绍了应用于氯碱工业中的防腐蚀新技术:玻璃鳞片涂层和衬里、耐腐蚀玻璃钢、耐酸耐温砖(空心)/法奥里特复合衬里、不停车带压堵漏等。 相似文献
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Kaiyang Yin Bradley A. Reese Charles R. Sullivan Ulrike G. K. Wegst 《Advanced functional materials》2021,31(8):2007743
Despite extensive research, the manufacture in the bulk of high-performance flake-based magnetic composites with a highly aligned, nacre-like structure remains challenging. Many challenges can be overcome by freeze casting in an externally applied, uniform magnetic field, which causes both the flakes and the composite walls of the cellular solid to align parallel to the B-field lines. When appropriately sized, the flakes experience a second alignment parallel to the freezing direction because of a shear flow that occurs due to both the volumetric expansion of the ice phase and mold contraction during the directional solidification. The resulting orthotropic structure of the freeze-cast magnetic composite is reflected in orthotropic mechanical and magnetic properties of the material. The magnetic composites manufactured by magnetic-field assisted freeze casting outperform by a factor of 2–4 in terms of stiffness, strength, and toughness materials that are processed in the absence of a magnetic field and do not exhibit a monodomain architecture. Because of the highly aligned microstructure, it is possible to compact the initially lamellar composite with 90% porosity to at least 80% strain. The results presented in this study illustrate the tremendous potential for magnetic freeze casting of magnetic composites for use in power conversion. 相似文献
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Xiang Li Jingyan Li Shan Dong Yufei Li Liping Wei Caicai Zhao Junyi Li Xuebo Liu Yutang Wang 《International Journal of Food Science & Technology》2019,54(7):2346-2354
The changes in chemical composition and antioxidant activities of brown and golden flaxseeds (Linum usitatissimum L.) during 5-day germination were investigated. Flaxseeds germinated in a dark and closed incubator at the temperature of 25 °C. With noticeable reduction in fat content, germinated flaxseeds were determined higher percentage of linolenic acid. The total phenolic content and antioxidant activities increased with germination time. The highest amount of secoisolarlciresinol diglucoside (SDG) was found in 2-day germinated brown and golden flaxseeds, which increased 1.04-fold and 1.09-fold, respectively, and germinated flaxseed oil was found rich in SDG. Intriguingly, germination increased the α-tocopherol content from 0 to 4.58 mg per 100 g and 0 to 7.83 mg per 100 g in brown and golden flaxseeds while γ-tocopherol decreased. Germination process also reduced the total content of cyanogenic glucosides, the content of linustatin, neolinustatin and lotaustralin decreased significantly, but caused an increase in the content of linamarin. Therefore, germination can be utilised as an effective method to improve the nutritional value of flaxseed. 相似文献