乙烯焦油树脂的制备
发布时间：2018-08-24 13:47
【摘要】：近几年,随着乙烯工业的快速发展,对于其生产过程中副产物的合理应用成为待要解决的重要问题之一。如果能对作为其工业生产中产生的副产物乙烯焦油进行合理的应用,可以提高乙烯生产的经济效益,当前其主要被当作工业燃料使用,不仅利用率低,而且污染环境。乙烯焦油主要成分是短侧链、碳氢比高的多环芳烃,是制备COPNA(多环多核芳香烃)树脂的优质原料。而且用乙烯焦油为基体合成的COPNA树脂,具有很好热稳定性、较好粘结性能,可以用来制作粘结性能相关的材料。当前,COPNA树脂大多是用乙烯焦油作为原料,对苯二甲醇、苯甲醛或三聚甲醛等为交联剂,对甲苯磺酸为催化剂,在N2氛围下合成COPNA树脂。COPNA树脂的软化点在110-120℃之间,残炭值在20-35%之间,β树脂含量在10-20%之间,这说明利用乙烯焦油合成的COPNA树脂拥有良好的耐热性和粘结性,为乙烯焦油树脂的进一步应用奠定基础。但是交联剂和催化剂的成本较高,不利于乙烯焦油树脂的工业化应用,也影响了乙烯焦油树脂的进一步的研究,因此寻找新型的交联剂和催化剂,是将COPNA树脂工业化生产必须解决的问题。本文以乙烯焦油为原料,先采用减压蒸馏方式,除去乙烯焦油组分中轻组分(≤300℃馏分),从而得到含有较多重组分的乙烯重质焦油,再使其与双醛淀粉,在木质素磺酸催化下交联合成COPNA树脂。运用IR、TG测试分析,探讨原料反应前后的结构变化及COPNA树脂的反应机理,通过对乙烯焦油树脂残炭值、软化点和β树脂含量等参数的测试,考查了其耐热性和粘结性等性能,并与目前树脂的合成工艺进行比较。实验研究发现,用经过减压蒸馏处理后得到的乙烯重质焦油为原料,加入占原料质量分数10%的双醛淀粉,以及占原料质量分数12%的木质素磺酸,在交联时间为5h,交联温度为160℃的条件下,合成COPNA树脂性能较好。乙烯焦油树脂的软化点为122.87℃,β树脂含量为23.7%,残炭值为31.79%,与当前类似的COPNA树脂相比,本文合成的COPNA树脂,在软化点温度和β树脂含量方面均有提高,残炭值接近,因此该树脂具有更好的耐热性和粘结性,本研究为COPNA树脂的工业化生产提供了新途径。
[Abstract]:In recent years, with the rapid development of ethylene industry, the rational application of by-products in the production process has become one of the important problems to be solved. If ethylene tar, a by-product produced in its industrial production, can be reasonably applied, the economic benefit of ethylene production can be improved. At present, it is mainly used as an industrial fuel, which not only has low utilization ratio, but also pollutes the environment. Polycyclic aromatic hydrocarbons (PAHs) with short side chains and high hydrocarbon ratio are the main components of ethylene tar, which is a good raw material for the preparation of polycyclic polynuclear aromatic hydrocarbons (COPNA) resins. Moreover, the COPNA resin based on ethylene tar has good thermal stability and good bonding property, so it can be used to make materials related to adhesive properties. At present, COPNA resin is synthesized from ethylene tar, p-benzaldehyde, p-toluenesulfonic acid, p-toluene sulfonic acid, p-benzaldehyde, p-toluenesulfonic acid as crosslinking agent and ethylene tar as raw material. The softening point of COPNA resin is between 110 鈩，
本文编号：2201005
[Abstract]:In recent years, with the rapid development of ethylene industry, the rational application of by-products in the production process has become one of the important problems to be solved. If ethylene tar, a by-product produced in its industrial production, can be reasonably applied, the economic benefit of ethylene production can be improved. At present, it is mainly used as an industrial fuel, which not only has low utilization ratio, but also pollutes the environment. Polycyclic aromatic hydrocarbons (PAHs) with short side chains and high hydrocarbon ratio are the main components of ethylene tar, which is a good raw material for the preparation of polycyclic polynuclear aromatic hydrocarbons (COPNA) resins. Moreover, the COPNA resin based on ethylene tar has good thermal stability and good bonding property, so it can be used to make materials related to adhesive properties. At present, COPNA resin is synthesized from ethylene tar, p-benzaldehyde, p-toluenesulfonic acid, p-toluene sulfonic acid, p-benzaldehyde, p-toluenesulfonic acid as crosslinking agent and ethylene tar as raw material. The softening point of COPNA resin is between 110 鈩，
本文编号：2201005
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