共查询到19条相似文献,搜索用时 62 毫秒
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综述了植物油的特性、植物油多元醇的合成工艺以及最新的研究进展。介绍了国内外聚氨酯硬泡的发展趋势以及改性植物油多元醇在聚氨酯硬泡方面的应用研究进展。概述了国内外近年来在植物油多元醇工业化方面的情况。 相似文献
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麦利来,聚氨酯顾问公司总监,在聚氨酯化学工业上具有35年的经验。他为世界各地的用户在聚氨酯化学及其成品制备方面作出了重要的贡献。在他的35年事业里,麦利来曾经在几家跨国化学公司担任过亚太地区技术经理、国际技术销售和市场总监、产品开发部总监。麦利来先生毕业于澳洲New South Wales工业技术大学有机工业化学专业。曾多次参加聚氨酯国际技术会议,并多次被邀做技术演讲。除此以外,他还多次为化学界权威杂志发表过文章。 相似文献
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聚脲多元醇的现状及进展情况 总被引:4,自引:0,他引:4
1 前言为了提高聚氨酯泡沫的承载能力,过去往往采用添加无机填料的方法。由于添加的无机填料与聚醚分散介质有明显的界面,泡沫的承载力虽有所提高,但其它机械性能下降,分散液中填料易于沉淀,使发泡时,泵输送困难,计量不准而无法在一般发泡设备上使用。 相似文献
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国内聚醚多元醇的生产现状及技术进展 总被引:2,自引:0,他引:2
于剑昆 《化学推进剂与高分子材料》2000,(1):1-9
<正> 聚醚多元醇又称聚氧化烯烃多元醇,它是用含活泼氢基团的化合物作起始剂,在催化剂存在下使单环氧化合物开环聚合制得。聚醚多元醇产量最大的是以甘油作起始剂和环氧化物反应,通过改变环氧丙烷(PO)和环氧乙烷(EO)的加料方式、加料比和加料次序等条件制得的各种通用型聚醚多元醇。聚醚多元醇的工业应用如图1所示。在聚氨酯(PU)工业所用的多元醇中,聚醚多元醇 相似文献
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This work reports a straightforward and selective method for the preparation of a polyol that can be used in the manufacture of polyurethane (PU) films. The polyol, from the N-hydroxyalkylamides family, is obtained from the selective amidation and oxirane ring opening of epoxidized soybean oil (ESO) with the amino alcohol N-methylethanolamine (N-MEA). The reaction is carried out under mild conditions and in the absence of solvents and catalysts. Other similar amino alcohols (namely monoethanolamine (ETA), 5-amino-1-pentanol (PEA), and 2-(2-aminoethoxy)ethanol (AEE)) are also used to carried out the amidation of ESO. However, for these amines, the amidation and/or oxirane ring opening of ESO is not complete. Therefore, the N-hydroxyalkylamide obtained from the amidation of ESO with N-MEA is chosen as the polyol for the preparation of PU films. The PU films are obtained from the reaction with a trimer of hexamethylene diisocyanate (Tolonate) and hexamethylene diisocyanate (HDI). Curing proceeds at room temperature, without catalyst. It is shown that the properties of the resulting PU films are dependent on the amount of Tolonate in the formulation. 相似文献
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以葵花籽油为原料,在冰醋酸和过氧化氢的共同作用下进行环氧化,制备葵花籽油基环氧化产物(SOEP);再以氢氧化锂为催化剂与二乙醇胺发生环氧开环反应,制备得到葵花籽油基多元醇(SOPOL)。探讨了反应温度和时间、冰醋酸/过氧化氢摩尔比对SOEP和SOPOL性能的影响,并采用核磁共振表征了SOEP和产物SOPOL的结构。结果表明,制备SOEP较为理想的反应温度为65℃,反应时间为10 h,葵花籽油(以双键计)、冰醋酸与过氧化氢的摩尔比为1∶2∶4;在135℃进行环氧基开环反应制备的SOPOL羟值可达到176 mgKOH/g,平均官能度为4.2。该SOPOL可替代传统石油基多元醇合成生物基聚氨酯树脂。 相似文献
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对聚合物多元醇在聚氨酯微孔弹性体中的应用进行了研究。考察了聚合物聚醚多元醇及聚合物聚酯多元醇对聚氨酯微孔弹性体力学性能的影响。实验结果表明,该类聚合物多元醇的引入可使聚氨酯微孔弹性体制品的力学性能得到较大改善,因此该类聚合物多元醇在聚氨酯领域必将具有广阔的应用前景。 相似文献
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Natural Palm Olein Polyol as a Replacement for Polyether Polyols in Viscoelastic Polyurethane Foam 下载免费PDF全文
H. Nurul ‘Ain T. I. Tuan Noor Maznee M. N. Norhayati M. A. Mohd Noor S. Adnan P. P. Kosheela Devi S. Mohd Norhisham S. K. Yeong A. H. Hazimah Irma Campara Vahid Sendijarevic Ibrahim Sendijarevic 《Journal of the American Oil Chemists' Society》2016,93(7):983-993
The impact of replacing three polyether polyols with different levels of a single palm olein‐based natural oil polyol (NOP) was systematically correlated with the changes in foaming reactivity, cell structure, physico‐mechanical properties, and morphology of viscoelastic (VE) foams. The data show that replacing the polyether polyols with the NOP slightly increased the rate of the foaming reactivity. Increasing the NOP content resulted in increased cell size and cells remained fully open. Increased NOP content contributed to higher load bearing properties of VE foam, which can be attributed to higher functionality of NOP compared to polyether polyols. Addition of the NOP slightly increased the resilience of the foams, however, the hysteresis which is the measure of energy absorption remained mostly unaffected. Age properties, characterized by dry and humid compression sets, were mostly unaffected by the replacement of the polyether polyol with the NOP. The addition of NOP did not impact the morphology of the VE foam polymer matrix, which appears to retain a low degree of hard and soft segment domain separation. Overall, the results demonstrate a feasibility that the NOP can be used to partially replace the polyether polyols in VE polyurethane foams without significant impact on the functional performance. 相似文献
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植物油基聚酯酰胺多元醇的合成及其在水性聚氨酯中的应用 总被引:2,自引:0,他引:2
以菜籽油和二乙醇胺为原料制备了脂肪醇酰胺混合多元醇RDEA,进一步和己二酸等原料反应合成了系列的聚酯酰胺多元醇,并对两类多元醇进行了表征。以聚酯酰胺多元醇、二羟甲基丙酸、异佛尔酮二异氰酸酯、苯乙烯和丙烯酸丁酯等原料合成了水性聚氨酯脲(PUU)分散液及聚氨酯脲-乙烯基聚合物(PUA)复合水分散液,并对其流变性能及稳定性进行了研究。 相似文献