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干法制备高醚化三聚氰胺树脂 被引量:7
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作者 刘泽 赵科 孙培勤 《精细化工》 EI CAS CSCD 北大核心 2015年第1期78-81,共4页
以三聚氰胺及甲醛等为原料,采用干法制备"低甲醛、高固含、高稳定性"的环保型高醚化三聚氰胺树脂,并对各反应阶段物料配比、温度、p H等多种影响因素进行了探讨,确定了最佳的制备条件。研究结果表明,当羟甲基化反应阶段n(三... 以三聚氰胺及甲醛等为原料,采用干法制备"低甲醛、高固含、高稳定性"的环保型高醚化三聚氰胺树脂,并对各反应阶段物料配比、温度、p H等多种影响因素进行了探讨,确定了最佳的制备条件。研究结果表明,当羟甲基化反应阶段n(三聚氰胺)∶n(甲醛)=1∶10,反应温度为75℃,p H=9.0,反应时间为50 min,醚化反应阶段n(六羟甲基三聚氰胺,即HMM)∶n(醇)=1∶10,反应温度为65℃,p H=5.5时,制成的高醚化三聚氰胺树脂固含量高达90%以上,羟甲基含量可达51.4%,且游离甲醛含量低于0.3%。 展开更多
关键词 高醚化 三聚氰胺树脂 干法 橡塑助剂
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高醚化三聚氰胺甲醛树脂交联水性聚氨酯的制备与表征 被引量:3
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作者 林强 郭姝宜 +3 位作者 黄毅萍 许戈文 鲍俊杰 程芹 《应用化学》 CAS CSCD 北大核心 2016年第10期1154-1160,共7页
合成了高醚化三聚氰胺甲醛树脂(HMMM)交联改性含聚乙二醇单甲醚(Ymer N120)亲水基团的阴离子型水性聚氨酯。通过全反射红外(ATR-FTIR)、差示扫描量热仪(DSC)、电子拉力机等技术手段表征了改性后的水性聚氨酯胶膜结构、热性能和力学性能... 合成了高醚化三聚氰胺甲醛树脂(HMMM)交联改性含聚乙二醇单甲醚(Ymer N120)亲水基团的阴离子型水性聚氨酯。通过全反射红外(ATR-FTIR)、差示扫描量热仪(DSC)、电子拉力机等技术手段表征了改性后的水性聚氨酯胶膜结构、热性能和力学性能。结果表明,随着HMMM质量分数的增加,聚氨酯胶膜中氢键相互作用减弱,胶膜耐热性、耐水性、拉伸强度、粘接性均有所提高;当HMMM为8%时,聚氨酯胶膜的拉伸强度增加了125%,T-型剥离强度增加了7.4 N/cm,硬段最大热分解速率对应温度增加了38℃。此外,交联水性聚氨酯胶膜的耐水性也得到了很大程度的提高。 展开更多
关键词 高醚化三聚氰胺甲醛树脂 聚乙二醇单甲醚 阴离水性子聚氨酯
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涂料用高醚化三聚氰胺甲醛树脂的合成 被引量:25
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作者 孙立水 李少香 +1 位作者 史新妍 刘光烨 《中国涂料》 CAS 2006年第2期19-21,共3页
对合成六羟甲基三聚氰胺(HMM)及其醚化的反应条件(物料配比、pH值、反应时间、反应温度)进行了探讨,解决了传统生产方法出现的问题,并对合成的样品进行了分析,其结果达到了国标相关规定的要求。
关键词 六羟甲基三聚氰胺(HMM) 高醚化三浆氰胺甲醛树脂(HMMM) 涂料
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水溶性高醚化度氨基涂料的研究 被引量:1
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作者 左常江 邢妍 《广州化工》 CAS 2014年第5期82-84,114,共4页
合成了一系列的水溶性高醚化度氨基树脂防火涂料。通过不同pH值、摩尔组分配比、反应时间和反应温度等条件的改变,研究了水溶性高醚化度氨基树脂防火涂料在不同条件下的耐水性、附着力和防火性能,并用红外光谱法测定甲氧基含量的测定,... 合成了一系列的水溶性高醚化度氨基树脂防火涂料。通过不同pH值、摩尔组分配比、反应时间和反应温度等条件的改变,研究了水溶性高醚化度氨基树脂防火涂料在不同条件下的耐水性、附着力和防火性能,并用红外光谱法测定甲氧基含量的测定,用加热烘焙法测定树脂的固含量。从而确定适宜的最佳的醚化pH值、原料组分摩尔比和最佳的反应温度、反应时间。实验结果表明,研制出了高醚化度的水溶性氨基树脂防火涂料。 展开更多
关键词 水溶性 高醚化 氨基涂料
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高醚化氨基树脂在硝基漆膜中的增塑作用及其高温性能
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作者 钟永科 《遵义师范高等专科学校学报》 1999年第2期86-87,共2页
考查了高醚化氨基树脂Resimene745、755、7512在硝基漆膜中的增塑作用及漆膜性能并与常用增塑剂DOP进行了对比试验,讨论了实验结果产生的可能原因,同时还考查了高醚化氨基树脂高温及混溶性能,试验结果表明:高醚化氨基树脂具有挥发性低... 考查了高醚化氨基树脂Resimene745、755、7512在硝基漆膜中的增塑作用及漆膜性能并与常用增塑剂DOP进行了对比试验,讨论了实验结果产生的可能原因,同时还考查了高醚化氨基树脂高温及混溶性能,试验结果表明:高醚化氨基树脂具有挥发性低、混溶范围宽等特点,经其增塑后的硝基漆膜光泽高、柔韧性好、硬度高、经高温烘烤后失光率小。 展开更多
关键词 高醚化氨基树脂 增塑作用
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In situ Synthesis of SAPO-34 Zeolites in Kaolin Microspheres for a Fluidized Methanol or Dimethyl Ether to Olefins Process 被引量:14
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作者 ZHU Jie CUI Yu NAWAZ Zeeshan WANG Yao WEI Fei 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2010年第6期979-987,共9页
SAPO-34 zeolite is considered to be an effective catalyst for methanol or dimethyl ether conversion to olefins. In this study,we developed the in situ synthesis technology to prepare SAPO-34 zeolite in kaolin micro-sp... SAPO-34 zeolite is considered to be an effective catalyst for methanol or dimethyl ether conversion to olefins. In this study,we developed the in situ synthesis technology to prepare SAPO-34 zeolite in kaolin micro-spheres as a catalyst for fluidized methanol or dimethyl ether to olefins process. The silicoaluminophosphate zeolite was first time reported to be synthesized in kaolin microspheres. The SAPO-34 content of synthesized catalyst was about 22% as measured by three different quantitative methods(micropore area,X-ray fluorescence and energy dispersive spectroscopy element analysis) . Most of the SAPO-34 zeolites were in nanoscale size and distributed uniformly inside the spheres. The catalytic performance was evaluated in fixed bed and fluidized bed reactors. Compared with the conventional spray-dry catalyst,SAPO/kaolin catalyst showed superior catalytic activities,bet-ter olefin selectivities(up to 94%,exclusive coke) ,and very good hydrothermal stability. The in situ synthesis of SAPO-34 in kaolin microspheres is a facile and economically feasible way to prepare more effective catalyst for fluidized MTO/DTO(methanol to olefins/dimethyl ether to olefins) process. 展开更多
关键词 SAPO-34 in situ synthesis KAOLIN fluidized bed methanol to olefins
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Effect of Sulfurization Temperature on Thioetherification Performance of Mo-Ni/Al_2O_3 Catalyst 被引量:1
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作者 Shen Zhibing Ke Ming +2 位作者 Ren Tao Zhang Juntao Liang Shengrong 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2015年第4期55-61,共7页
The Mo modified Ni/Al_2O_3 catalysts were prepared and sulfided at different temperatures, and their catalytic activity for thioetherification of mercaptans and olefins(or dienes), hydrogenation of dienes and olefins ... The Mo modified Ni/Al_2O_3 catalysts were prepared and sulfided at different temperatures, and their catalytic activity for thioetherification of mercaptans and olefins(or dienes), hydrogenation of dienes and olefins in the thioetherification process using fluidized catalytic cracking(FCC) naphtha as the feedstock was investigated. In order to disclose the correlation between the physicochemical characteristics of catalysts and their catalytic activity, the surface structures and properties of the catalysts sulfided at different temperatures were characterized by the high resolution transmission electronic microscopy(HRTEM), X-ray photoelectron spectroscopy(XPS) and H2-temperature programmed reduction(H_2-TPR) technique. The results showed that an increase of sulfurization temperature not only could promote the sulfurization degree of active metals on the catalysts, but also could adjust the micro-morphology of active species. These changes could improve the catalytic performance of thioetherification, and hydrogenation of dienes and olefins. However, an excess sulfurization temperature was more easily to upgrade the ability of the catalyst for hydrogenation of olefins, which could lead to a decrease of the octane number of the product. It was also showed that a moderate sulfurization temperature not only could improve the catalytic performance of thioetherification and hydrogenation of dienes but also could control hydrogenation of olefins. 展开更多
关键词 sulfurization temperature thioetherification Mo-Ni/Al_2O_3 catalysts active structure Ni-Mo-S phase
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