共查询到20条相似文献,搜索用时 46 毫秒
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以亚胺树脂改性环氧/不饱和聚酯树脂体系,制备了综合性能良好、耐热指数为165.5℃的无溶剂绝缘浸渍漆. 相似文献
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本文介绍了一种快速固化B/F通用浸渍漆,该漆广泛应用于中小型电机、电器线圈的浸渍,对于节约能源、缩短生产和烘焙时间、提高经济效益具有十分重要意义。 相似文献
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介绍了一种新合成的聚酯酰亚胺 (PEsI-A) ,用于增韧环氧树脂。同时考察了PEsI -A改性环氧树脂的形态、动态力学行为、流变行为、反应诱导相分离机理和粘结性能 相似文献
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本文介绍了开林厂以不饱和聚酯路线合成题示产品的反应机理、配方筛选、工艺试验、性能试验等内容,并揭示了解决产品稳定性之方法。 相似文献
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研究了在改性聚酯树脂中引入二苯基丙烷结构来提高其耐热性能,制成的耐热聚酯电磁线漆作底漆与聚酰胺酰亚胺电磁线漆配合使用,涂制的QZY/XY-200级复合漆包线热软化温度可以达到380℃,热冲击性能在漆包线拉伸10%、240℃、30min条件下1d不开裂,提高了特种电机的耐高温工作能力。 相似文献
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Guillermo Osorio-Revilla Tzayhrí Gallardo-Velázquez Socorro López-Cortés Sofía Arellano-Cárdenas 《Drying Technology》2013,31(8):1033-1038
Wheat (Triticum durum) was dried by immersion in a particulate medium grain dryer using natural clay, pillared aluminum clay (Al-PILC), zeolite 13X, and sand as particulate medium at different initial bed temperatures and residence times in the dryer. Results showed that zeolite caused the highest grain moisture loss for a given drying time, followed by Al-PILC, natural clay, and, finally, the sand. The drying capacity of the Al-PILC was similar to that of the zeolite. The Al-PILC transferred an amount of heat equivalent to 85–94% of the heat transferred by zeolite and evaporated 83–93% of the moisture removed by zeolite. Results also showed that the zeolite and the Al-PILC had the best heat and mass transfer properties of the four particulate materials used and that the Al-PILC can be used as an alternative of the zeolite in particulate medium immersion grain drying. 相似文献
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Guillermo Osorio-Revilla Tzayhrí Gallardo-Vel zquez Socorro L pez-Cort s Sofí a Arellano-C rdenas 《Drying Technology》2006,24(8):1033-1038
Wheat (Triticum durum) was dried by immersion in a particulate medium grain dryer using natural clay, pillared aluminum clay (Al-PILC), zeolite 13X, and sand as particulate medium at different initial bed temperatures and residence times in the dryer. Results showed that zeolite caused the highest grain moisture loss for a given drying time, followed by Al-PILC, natural clay, and, finally, the sand. The drying capacity of the Al-PILC was similar to that of the zeolite. The Al-PILC transferred an amount of heat equivalent to 85-94% of the heat transferred by zeolite and evaporated 83-93% of the moisture removed by zeolite. Results also showed that the zeolite and the Al-PILC had the best heat and mass transfer properties of the four particulate materials used and that the Al-PILC can be used as an alternative of the zeolite in particulate medium immersion grain drying. 相似文献
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通过薄层色谱、气相色谱、色质联用等技术,首次得到了油脂环氧化反应期间的脂肪酸环氧化反应规律:开始反应阶段,高含量不饱和脂肪酸反应速率高于低含量不饱和脂肪酸;环氧化反应期间,多不饱和脂肪酸首先生成单环氧酸,之后再逐渐生成二环氧酸,最后生成三环氧酸;富含亚麻酸的油脂环氧化反应时有更易于开环反应的趋向,其次是富含亚油酸的油脂,再次是富含油酸的油脂.实验结果表明,不同环氧油原料在进行环氧化反应时需要控制不同的反应条件,以避免开环副产物量的增加,从而制备得优质环氧油产品. 相似文献
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浸渍法测量片状结晶性塑料密度的不确定度评估 总被引:1,自引:0,他引:1
按照GB1033—186中的浸渍法测量5种片状结晶性塑料的密度,分析了塑料密度测量的影响因素,如浸渍浓度、测量温度、样品称量等。利用测试数据及JJF1059—1999对浸渍法测量片状结晶性塑料密度的不确定度进行分析评估,得出测量结果的扩展不确定度为0.0073g/cm3。 相似文献
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叙述了辛硫磷、氧化乐果混合乳油的分析方法。氧化乐果的回收率97.8%-101.4%。辛硫磷的回收率98.2%-102.5%。 相似文献
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利用聚乙烯化验室现有检测设备,选定两台Pu400色谱仪,经过科学分析和工作参数的调整,建立检测D400反应器流化气相组成及含量的分析方法。 相似文献
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作者结合亲身参与的木器漆质量纠纷案例对装修中常用的溶剂型聚酯聚氨酯木器漆漆膜发自病态进行剖析并提出建议处理措施,从科学的视角探讨木器漆的施工因素和配方对漆膜外观的影响。 相似文献